TWI890399B - PTRS transmission power determination method, device and storage medium - Google Patents

Abstract

The present invention provides a PTRS transmission power determination method, apparatus, and storage medium. The PTRS transmission power determination method includes determining a power ratio between the PTRS and a physical uplink shared channel (PUSCH) based on first information; the first information includes one or more of the following: the number of PUSCH layers associated with the PTRS sharing an antenna port or antenna port group; the number of PUSCH layers sharing an antenna port; the codebook subset corresponding to PUSCH transmission; or a parameter indicating the codebook subset corresponding to PUSCH transmission; and determining the PTRS transmission power based on the PTRS-PUSCH power ratio.

Description

PTRS transmission power determination method, device and storage medium

The present invention relates to the field of communication technology, and more particularly to a PTRS transmission power determination method, device, and storage medium.

The 5G New Radio (NR) system supports tracking the phase noise introduced by the local oscillators (LOs) in gNBs and terminals/user equipment (UEs) using a Phase Tracking Reference Signal (PTRS). Signals using the same LO can be used to estimate phase noise using the same PTRS. To ensure PTRS transmission performance, a PTRS is typically mapped to a data flow with better channel quality for transmission. The corresponding demodulation reference signal (DMRS) port for this data flow is indicated to the UE by the base station through the PTRS-DMRS association field in Radio Resource Control (RRC) signaling or Downlink Control Information (DCI) signaling. For codebook-based PUSCH transmission schemes, the DMRS port associated with a PTRS port is indicated by the PTRS and DMRS port association field in RRC signaling or DCI signaling. In wireless communication systems, a signal can borrow power from signals multiplexed with it in the code/frequency domain to boost its power, thereby improving transmission performance.

The existing PTRS power boost scheme in the existing protocol is designed for the Physical Uplink Shared Channel (PUSCH) with a maximum of four antenna ports. As the number of PUSCH antenna ports increases, the existing power boost scheme cannot fully utilize the available power, which means it cannot achieve optimal PTRS transmission performance. Furthermore, for some precoding matrices, the existing power boost scheme may exceed the power amplifier (PA) capabilities of the UE. Therefore, the existing PTRS power boost scheme is not suitable for PUSCH transmission with a larger number of antenna ports, resulting in poor PTRS transmission performance.

The present invention provides a method, device, and storage medium for determining PTRS transmission power to solve the technical problem of low PTRS transmission performance in the prior art.

In a first aspect, embodiments of the present invention provide a method for determining PTRS transmission power, applied to a terminal, comprising: Determining a PTRS to physical uplink shared channel (PUSCH) power ratio based on first information; the first information comprising one or more of the following: The number of PUSCH layers associated with the PTRS sharing a common antenna port or antenna port group; The number of PUSCH layers in a shared antenna port; The codebook subset corresponding to PUSCH transmission; or A parameter indicating the codebook subset corresponding to PUSCH transmission; Determining the PTRS transmission power based on the PTRS to PUSCH power ratio.

In some embodiments, when the first information includes a codebook subset corresponding to PUSCH transmission, determining the PTRS to PUSCH power ratio based on the first information includes: Determining a precoding matrix and/or the number of PUSCH layers; Determining the PTRS to PUSCH power ratio based on the first information and the precoding matrix and/or the number of PUSCH layers.

In some embodiments, determining the power ratio of PTRS to PUSCH based on the first information includes: Determine the power ratio of PTRS to PUSCH; or, based on Determine the first value and based on Determine a second value; Determine a PTRS to PUSCH power ratio based on the sum of the first value and the second value; or, Calculate and The product of and The power ratio of PTRS to PUSCH is determined by multiplying Determine the first value and based on Determine the second value based on Determine a fourth value; calculate the sum of the first value and the second value; determine a PTRS to PUSCH power ratio based on a minimum value of the sum of the first value and the second value and the fourth value; or, based on and The product of determines the third value, and based on Determine a fourth value; Determine a PTRS to PUSCH power ratio based on a minimum value between the third value and the fourth value; or, and The product of The minimum value of determines the power ratio of PTRS to PUSCH; Calculate and The product of and The product of The minimum value of determines the power ratio of PTRS to PUSCH; Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers.

In some embodiments, the power ratio of the PTRS to the PUSCH determined based on the first information may be in one or more of the following forms: ; ; ; ; ; ; ;or ; in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers.

In some embodiments, the PUSCH layer that shares an antenna port or antenna port group with the PUSCH layer associated with the PTRS includes one or more of the following: A PUSCH layer that uses some of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer that uses all of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer in which all of the antenna ports that transmit at non-zero power are antenna ports in the PUSCH layer associated with the PTRS that transmit at non-zero power; A PUSCH layer that uses the same antenna port as the antenna port in the PUSCH layer associated with the PTRS that transmits at non-zero power for non-zero power transmission; At least one antenna port among the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power; or An antenna port that is in the same antenna port group as the antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power.

In some embodiments, the antenna port set is a coherent antenna port set, and/or the antenna port set includes one or more of the following: a default antenna port set; an antenna port set determined by the UE; or an antenna port set indicated by a network device.

In some embodiments, the PUSCH layers of the shared antenna port include one or more of the following: PUSCH layers sharing the same antenna port; or PUSCH layers sharing the same group of antenna ports.

In some embodiments, the PUSCH layers sharing the same antenna port include one or more of the following: PUSCH layers using the same antenna port for non-zero power transmission; PUSCH layers containing antenna ports for non-zero power transmission; or PUSCH layers overlapping antenna ports for non-zero power transmission.

In some embodiments, the PUSCH layers sharing the same antenna port group include: PUSCH layers using antenna ports in the same antenna port group for non-zero power transmission.

In some embodiments, the antenna ports in the same antenna port group transmit coherently, and/or the antenna ports in the same antenna port group include one or more of the following: a default antenna port; an antenna port determined by the UE; or an antenna port indicated by a network device.

In some embodiments, the PUSCH layers sharing the same antenna port share a power amplifier PA.

In some embodiments, the number of PUSCH layers for the shared antenna port includes one or more of the following information: The minimum number of PUSCH layers for the same antenna port; or The minimum number of PUSCH layers for the same group of antenna ports.

In some embodiments, the parameter indicating the codebook subset corresponding to the PUSCH transmission includes a parameter indicating a PUSCH coherent transmission antenna group.

In a second aspect, embodiments of the present invention provide a method for determining PTRS transmission power, applied to a terminal, comprising: determining a PTRS to PUSCH power ratio based on second information; the second information comprising one or more of the following: the number of PTRS ports associated with PUSCH transmission; the number of PTRS ports configured by a network device for the terminal; or the number of PUSCH layers; the PTRS to PUSCH power ratio comprising one or more of the following: ; ; ; ; ; ; 7; 7.78; 8.45; or 9; of which, Indicates the number of PTRS ports associated with PUSCH transmission, or the number of PTRS ports configured by the network device for the terminal; L indicates the number of PUSCH layers associated with the PTRS; The transmission power of the PTRS is determined based on the power ratio of the PTRS to the PUSCH.

In a third aspect, embodiments of the present invention provide a PTRS transmission power indication method, applicable to a network device, comprising: Determining a method for determining a PTRS-to-PUSCH power ratio; Sending information indicating the method for determining the PTRS-to-PUSCH power ratio to a terminal; The method for determining the PTRS-to-PUSCH power ratio comprises: Determining the PTRS-to-PUSCH power ratio based on first information; The first information comprises one or more of the following: The number of PUSCH layers associated with the PTRS sharing a common antenna port or antenna port group; The number of PUSCH layers sharing a common antenna port; The codebook subset corresponding to the PUSCH transmission; or A parameter indicating the codebook subset corresponding to the PUSCH transmission.

In some embodiments, when the first information includes a codebook subset corresponding to PUSCH transmission, determining the PTRS to PUSCH power ratio based on the first information includes: Determining a precoding matrix and/or the number of PUSCH layers; Determining the PTRS to PUSCH power ratio based on the first information and the precoding matrix and/or the number of PUSCH layers.

In some embodiments, the power ratio of the PTRS to the PUSCH determined based on the first information may be in one or more of the following forms: ; ; ; ; ; ; ;or ; in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers.

In some embodiments, the PUSCH layer that shares an antenna port or antenna port group with the PUSCH layer associated with the PTRS includes one or more of the following: A PUSCH layer that uses some of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer that uses all of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer in which all of the antenna ports that transmit at non-zero power are antenna ports in the PUSCH layer associated with the PTRS that transmit at non-zero power; A PUSCH layer that uses the same antenna port as the antenna port in the PUSCH layer associated with the PTRS that transmits at non-zero power for non-zero power transmission; At least one antenna port among the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power; or An antenna port that is in the same antenna port group as the antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power.

In some embodiments, the antenna port set is a coherent antenna port set, and/or the antenna port set includes one or more of the following: a default antenna port set; an antenna port set determined by the UE; or an antenna port set indicated by a network device.

In some embodiments, the PUSCH layers of the shared antenna port include one or more of the following: PUSCH layers sharing the same antenna port; or PUSCH layers sharing the same group of antenna ports.

In some embodiments, the PUSCH layers sharing the same antenna port include one or more of the following: PUSCH layers using the same antenna port for non-zero power transmission; PUSCH layers containing antenna ports for non-zero power transmission; or PUSCH layers overlapping antenna ports for non-zero power transmission.

In some embodiments, the PUSCH layers sharing the same antenna port group include: PUSCH layers using antenna ports in the same antenna port group for non-zero power transmission.

In some embodiments, the antenna terminals in the same antenna port group, and/or the antenna ports in the same antenna port group, include one or more of the following: a default antenna port; an antenna port determined by the UE; or an antenna port indicated by a network device.

In some embodiments, the PUSCH layers sharing the same antenna port share a power amplifier PA.

In some embodiments, the PUSCH transmission associated with the PTRS includes multiple PUSCH layers sharing a common antenna port; the number of PUSCH layers sharing the common antenna port includes one or more of the following information: The minimum number of PUSCH layers sharing the same antenna port; or The minimum number of PUSCH layers sharing the same group of antenna ports.

In some embodiments, the parameter indicating the codebook subset corresponding to the PUSCH transmission includes a parameter indicating the PUSCH coherent transmission antenna group.

In a fourth aspect, embodiments of the present invention provide a terminal comprising a memory, a transceiver, and a processor; the memory is configured to store a computer program; the transceiver is configured to transmit and receive data under the control of the processor; and the processor is configured to read the computer program from the memory and perform the following operations: determining a power ratio between a PTRS and a physical uplink shared channel (PUSCH) based on first information; the first information comprising one or more of the following: the number of PUSCH layers associated with the PTRS sharing a common antenna port or antenna port group; the number of PUSCH layers sharing a common antenna port; the codebook subset corresponding to the PUSCH transmission; or a parameter indicating the codebook subset corresponding to the PUSCH transmission; The transmit power of the PTRS is determined based on the power ratio of the PTRS to the PUSCH.

In some embodiments, when the first information includes a codebook subset corresponding to PUSCH transmission, determining the PTRS to PUSCH power ratio based on the first information includes: Determining a precoding matrix and/or the number of PUSCH layers; Determining the PTRS to PUSCH power ratio based on the first information and the precoding matrix and/or the number of PUSCH layers.

In some embodiments, determining the power ratio of PTRS to PUSCH based on the first information includes: Determine the power ratio of PTRS to PUSCH; or, based on Determine the first value and based on Determine a second value; Determine a PTRS to PUSCH power ratio based on the sum of the first value and the second value; or, Calculate and The product of and The power ratio of PTRS to PUSCH is determined by multiplying Determine the first value and based on Determine the second value based on Determine a fourth value; calculate the sum of the first value and the second value; determine a PTRS to PUSCH power ratio based on a minimum value of the sum of the first value and the second value and the fourth value; or, based on and The product of determines the third value, and based on Determine a fourth value; Determine a PTRS to PUSCH power ratio based on a minimum value between the third value and the fourth value; or, and The product of The minimum value of determines the power ratio of PTRS to PUSCH; Calculate and The product of and The product of The minimum value of determines the power ratio of PTRS to PUSCH; Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers.

In some embodiments, the power ratio of the PTRS to the PUSCH determined based on the first information may be in one or more of the following forms: ; ; ; ; ; ; ;or ; in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers.

In some embodiments, the PUSCH layer that shares an antenna port or antenna port group with the PUSCH layer associated with the PTRS includes one or more of the following: A PUSCH layer that uses some of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer that uses all of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer in which all of the antenna ports that transmit at non-zero power are antenna ports in the PUSCH layer associated with the PTRS that transmit at non-zero power; A PUSCH layer that uses the same antenna port as the antenna port in the PUSCH layer associated with the PTRS that transmits at non-zero power for non-zero power transmission; At least one antenna port among the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power; or An antenna port that is in the same antenna port group as the antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power.

In some embodiments, the antenna port set is a coherent antenna port set, and/or the antenna port set includes one or more of the following: a default antenna port set; an antenna port set determined by the UE; or an antenna port set indicated by a network device.

In some embodiments, the PUSCH layers of the shared antenna port include one or more of the following: PUSCH layers sharing the same antenna port; or PUSCH layers sharing the same group of antenna ports.

In some embodiments, the PUSCH layers sharing the same antenna port include one or more of the following: PUSCH layers using the same antenna port for non-zero power transmission; PUSCH layers containing antenna ports for non-zero power transmission; or PUSCH layers overlapping antenna ports for non-zero power transmission.

In some embodiments, the PUSCH layers sharing the same antenna port group include: PUSCH layers using antenna ports in the same antenna port group for non-zero power transmission.

In some embodiments, the antenna ports in the same antenna port group transmit coherently, and/or the antenna ports in the same antenna port group include one or more of the following: a default antenna port; an antenna port determined by the UE; or an antenna port indicated by a network device.

In some embodiments, the PUSCH layers sharing the same antenna port share a power amplifier PA.

In some embodiments, the number of PUSCH layers for the shared antenna port includes one or more of the following information: The minimum number of PUSCH layers for the same antenna port; or The minimum number of PUSCH layers for the same group of antenna ports.

In some embodiments, the parameter indicating the codebook subset corresponding to the PUSCH transmission includes a parameter indicating the PUSCH coherent transmission antenna group.

In a fifth aspect, embodiments of the present invention provide a terminal comprising a memory, a transceiver, and a processor; the memory being configured to store a computer program; the transceiver being configured to transmit and receive data under the control of the processor; and the processor being configured to read the computer program from the memory and perform the following operations: determining a PTRS to PUSCH power ratio based on second information; the second information comprising one or more of the following: the number of PTRS ports associated with PUSCH transmission; the number of PTRS ports configured by a network device for the terminal; or the number of PUSCH layers; the PTRS to PUSCH power ratio comprising one or more of the following: ; ; ; ; ; ; 7; 7.78; 8.45; or 9; of which, Indicates the number of PTRS ports associated with PUSCH transmission, or the number of PTRS ports configured by the network device for the terminal; L indicates the number of PUSCH layers associated with the PTRS; The transmission power of the PTRS is determined based on the power ratio of the PTRS to the PUSCH.

In a sixth aspect, embodiments of the present invention provide a network device comprising a memory, a transceiver, and a processor; the memory is configured to store a computer program; the transceiver is configured to transmit and receive data under the control of the processor; and the processor is configured to read the computer program from the memory and perform the following operations: Determining a method for determining the power ratio of PTRS to PUSCH; Sending information indicating the method for determining the power ratio of PTRS to PUSCH to a terminal; wherein the method for determining the power ratio of PTRS to PUSCH comprises: Determining the power ratio of PTRS to PUSCH based on first information; the first information comprises one or more of the following: The number of PUSCH layers that share an antenna port or antenna port group with the PUSCH layer associated with the PTRS; The number of PUSCH layers for a shared antenna port; The codebook subset corresponding to PUSCH transmission; or A parameter indicating the codebook subset corresponding to PUSCH transmission.

In some embodiments, when the first information includes a codebook subset corresponding to PUSCH transmission, determining the PTRS to PUSCH power ratio based on the first information includes: Determining a precoding matrix and/or the number of PUSCH layers; Determining the PTRS to PUSCH power ratio based on the first information and the precoding matrix and/or the number of PUSCH layers.

In some embodiments, the power ratio of the PTRS to the PUSCH determined based on the first information may be in one or more of the following forms: ; ; ; ; ; ; ;or ; in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers.

In some embodiments, the PUSCH layer that shares an antenna port or antenna port group with the PUSCH layer associated with the PTRS includes one or more of the following: A PUSCH layer that uses some of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer that uses all of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer in which all of the antenna ports that transmit at non-zero power are antenna ports in the PUSCH layer associated with the PTRS that transmit at non-zero power; A PUSCH layer that uses the same antenna port as the antenna port in the PUSCH layer associated with the PTRS that transmits at non-zero power for non-zero power transmission; At least one antenna port among the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power; or An antenna port that is in the same antenna port group as the antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power.

In some embodiments, the antenna port set is a coherent antenna port set, and/or the antenna port set includes one or more of the following: a default antenna port set; an antenna port set determined by the UE; or an antenna port set indicated by a network device.

In some embodiments, the PUSCH layers of the shared antenna port include one or more of the following: PUSCH layers sharing the same antenna port; or PUSCH layers sharing the same group of antenna ports.

In some embodiments, the PUSCH layers sharing the same antenna port include one or more of the following: PUSCH layers using the same antenna port for non-zero power transmission; PUSCH layers containing antenna ports for non-zero power transmission; or PUSCH layers overlapping antenna ports for non-zero power transmission.

In some embodiments, the PUSCH layers sharing the same antenna port group include: PUSCH layers using antenna ports in the same antenna port group for non-zero power transmission.

In some embodiments, the antenna terminals in the same antenna port group, and/or the antenna ports in the same antenna port group, include one or more of the following: a default antenna port; an antenna port determined by the UE; or an antenna port indicated by a network device.

In some embodiments, the PUSCH layers sharing the same antenna port share a power amplifier PA.

In some embodiments, the PUSCH transmission associated with the PTRS includes multiple PUSCH layers sharing a common antenna port; the number of PUSCH layers sharing the common antenna port includes one or more of the following information: The minimum number of PUSCH layers sharing the same antenna port; or The minimum number of PUSCH layers sharing the same group of antenna ports.

In some embodiments, the parameter indicating the codebook subset corresponding to the PUSCH transmission includes a parameter indicating the PUSCH coherent transmission antenna group.

In a seventh aspect, embodiments of the present invention provide a PTRS transmission power determination apparatus, comprising: a first determination module configured to determine a power ratio between the PTRS and a physical uplink shared channel (PUSCH) based on first information; the first information comprising one or more of the following: the number of PUSCH layers associated with the PTRS sharing a common antenna port or antenna port group; the number of PUSCH layers in a shared antenna port; the codebook subset corresponding to PUSCH transmission; or a parameter indicating the codebook subset corresponding to PUSCH transmission; a second determination module configured to determine the PTRS transmission power based on the PTRS-to-PUSCH power ratio.

In some embodiments, when the first information includes a codebook subset corresponding to PUSCH transmission, the first determination module includes: a sixth determination module for determining a precoding matrix and/or the number of PUSCH layers; a seventh determination module for determining a PTRS-to-PUSCH power ratio based on the first information, the precoding matrix, and/or the number of PUSCH layers.

In some embodiments, the power ratio of the PTRS to the PUSCH determined based on the first information may be in one or more of the following forms: ; ; ; ; ; ; ;or ; in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers.

In some embodiments, the PUSCH layer that shares an antenna port or antenna port group with the PUSCH layer associated with the PTRS includes one or more of the following: A PUSCH layer that uses some of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer that uses all of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer in which all of the antenna ports that transmit at non-zero power are antenna ports in the PUSCH layer associated with the PTRS that transmit at non-zero power; A PUSCH layer that uses the same antenna port as the antenna port in the PUSCH layer associated with the PTRS that transmits at non-zero power for non-zero power transmission; At least one antenna port among the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power; or An antenna port that is in the same antenna port group as the antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power.

In some embodiments, the antenna port set is a coherent antenna port set, and/or the antenna port set includes one or more of the following: a default antenna port set; an antenna port set determined by the UE; or an antenna port set indicated by a network device.

In some embodiments, the PUSCH layers of the shared antenna port include one or more of the following: PUSCH layers sharing the same antenna port; or PUSCH layers sharing the same group of antenna ports.

In some embodiments, the PUSCH layers sharing the same antenna port include one or more of the following: PUSCH layers using the same antenna port for non-zero power transmission; PUSCH layers containing antenna ports for non-zero power transmission; or PUSCH layers overlapping antenna ports for non-zero power transmission.

In some embodiments, the PUSCH layers sharing the same antenna port group include: PUSCH layers using antenna ports in the same antenna port group for non-zero power transmission.

In some embodiments, the antenna ports in the same antenna port group transmit coherently, and/or the antenna ports in the same antenna port group include one or more of the following: a default antenna port; an antenna port determined by the UE; or an antenna port indicated by a network device.

In some embodiments, the PUSCH layers sharing the same antenna port share a power amplifier PA.

In some embodiments, the number of PUSCH layers for the shared antenna port includes one or more of the following information: The minimum number of PUSCH layers for the same antenna port; or The minimum number of PUSCH layers for the same group of antenna ports.

In some embodiments, the parameter indicating the codebook subset corresponding to the PUSCH transmission includes a parameter indicating the PUSCH coherent transmission antenna group.

In an eighth aspect, embodiments of the present invention provide a PTRS transmission power determination apparatus, comprising: a third determination module configured to determine a PTRS to PUSCH power ratio based on second information; the second information comprising one or more of the following: the number of PTRS ports associated with PUSCH transmission; the number of PTRS ports configured by a network device for a terminal; or the number of PUSCH layers; the PTRS to PUSCH power ratio comprising one or more of the following: ; ; ; ; ; ; 7; 7.78; 8.45; or 9; of which, represents the number of PTRS ports associated with PUSCH transmission, or the number of PTRS ports configured by the network device for the terminal; L represents the number of PUSCH layers associated with the PTRS; and a fourth determination module is used to determine the transmission power of the PTRS based on the power ratio of the PTRS to the PUSCH.

In a ninth aspect, embodiments of the present invention provide a PTRS transmit power indication device, comprising: a fifth determination module, configured to determine a method for determining a PTRS-to-PUSCH power ratio; a transmission module, configured to transmit information indicating the method for determining the PTRS-to-PUSCH power ratio to a terminal; wherein the method for determining the PTRS-to-PUSCH power ratio comprises: determining the PTRS-to-PUSCH power ratio based on first information; the first information comprising one or more of the following: the number of PUSCH layers associated with the PTRS sharing a common antenna port or antenna port group; the number of PUSCH layers sharing a common antenna port; the codebook subset corresponding to PUSCH transmission; or a parameter indicating the codebook subset corresponding to PUSCH transmission.

In some embodiments, when the first information includes a codebook subset corresponding to PUSCH transmission, determining the PTRS to PUSCH power ratio based on the first information includes: Determining a precoding matrix and/or the number of PUSCH layers; Determining the PTRS to PUSCH power ratio based on the first information and the precoding matrix and/or the number of PUSCH layers.

In some embodiments, the power ratio of the PTRS to the PUSCH determined based on the first information may be in one or more of the following forms: ; ; ; ; ; ; ;or ; in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers.

In some embodiments, the PUSCH layer that shares an antenna port or antenna port group with the PUSCH layer associated with the PTRS includes one or more of the following: A PUSCH layer that uses some of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer that uses all of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer in which all of the antenna ports that transmit at non-zero power are antenna ports in the PUSCH layer associated with the PTRS that transmit at non-zero power; A PUSCH layer that uses the same antenna port as the antenna port in the PUSCH layer associated with the PTRS that transmits at non-zero power for non-zero power transmission; At least one antenna port among the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power; or An antenna port that is in the same antenna port group as the antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power.

In some embodiments, the antenna port set is a coherent antenna port set, and/or the antenna port set includes one or more of the following: a default antenna port set; an antenna port set determined by the UE; or an antenna port set indicated by a network device.

In some embodiments, the PUSCH layers of the shared antenna port include one or more of the following: PUSCH layers sharing the same antenna port; or PUSCH layers sharing the same group of antenna ports.

In some embodiments, the PUSCH layers sharing the same antenna port include one or more of the following: PUSCH layers using the same antenna port for non-zero power transmission; PUSCH layers containing antenna ports for non-zero power transmission; or PUSCH layers overlapping antenna ports for non-zero power transmission.

In some embodiments, the PUSCH layers sharing the same antenna port group include: PUSCH layers using antenna ports in the same antenna port group for non-zero power transmission.

In some embodiments, the antenna terminals in the same antenna port group, and/or the antenna ports in the same antenna port group, include one or more of the following: a default antenna port; an antenna port determined by the UE; or an antenna port indicated by a network device.

In some embodiments, the PUSCH layers sharing the same antenna port share a power amplifier PA.

In some embodiments, the PUSCH transmission associated with the PTRS includes multiple PUSCH layers sharing a common antenna port; the number of PUSCH layers sharing the common antenna port includes one or more of the following information: The minimum number of PUSCH layers sharing the same antenna port; or The minimum number of PUSCH layers sharing the same group of antenna ports.

In some embodiments, the parameter indicating the codebook subset corresponding to the PUSCH transmission includes a parameter indicating the PUSCH coherent transmission antenna group.

In a tenth aspect, an embodiment of the present invention further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the PTRS transmission power determination method described in the first or second aspect as described above, or to execute the PTRS transmission power indication method described in the third aspect as described above.

In the eleventh aspect, an embodiment of the present invention further provides a computer-readable storage medium storing a computer program, which is used to enable a computer to execute the PTRS transmission power determination method described in the first or second aspect, or to execute the PTRS transmission power indication method described in the third aspect.

In a twelfth aspect, an embodiment of the present invention further provides a communication device readable storage medium, wherein the communication device readable storage medium stores a computer program, and the computer program is used to enable the communication device to execute the PTRS transmission power determination method described in the first aspect or the second aspect, or to execute the PTRS transmission power indication method described in the third aspect.

In a thirteenth aspect, an embodiment of the present invention further provides a chip product readable storage medium, wherein the chip product readable storage medium stores a computer program, and the computer program is used to enable the chip product to execute the PTRS transmission power determination method described in the first or second aspect above, or execute the PTRS transmission power indication method described in the third aspect above.

The PTRS transmission power determination method, apparatus, and storage medium provided by the embodiments of the present invention determine the power ratio between the PTRS and the physical uplink shared channel (PUSCH) based on first information; the first information includes one or more of the following: the number of PUSCH layers of a shared antenna port or antenna port group associated with the PUSCH layer associated with the PTRS, the number of PUSCH layers of a shared antenna port, the codebook subset corresponding to PUSCH transmission, or a parameter used to indicate the codebook subset corresponding to PUSCH transmission. The PTRS transmission power is then determined based on the PTRS-to-PUSCH power ratio, thereby fully utilizing the available power while taking into account the UE's PA capabilities to achieve optimal PTRS transmission performance.

To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For those with ordinary knowledge in this technical field, other drawings can be obtained based on these drawings without making any progressive improvements.

The 3rd Generation Partnership Project (3GPP) specifies the maximum number of PTRS ports that a base station can configure for a UE using the upper layer parameter maxNrofPorts in the PTRS-UplinkConfig configuration. The maximum number of uplink PTRS ports configured by a base station for a UE will not exceed the maximum number of PTRS ports reported by the UE or the maximum number of PTRS ports supported by the UE.

If a terminal reports its ability to support fully coherent uplink transmission, then if the base station has configured uplink PTRS for the UE, the UE wishes to configure the number of uplink PTRS ports to 1. For codebook-based or non-codebook-based UL transmission, the association between UL PTRS ports and DMRS ports is indicated via the PTRS-DMRS association field in DCI format 0_1 and DCI format 0_2, or is a predefined association. The term "predefined" in the present invention includes one or more of protocol agreement, base station preconfiguration, or terminal preconfiguration.

For PUSCH scheduled or activated using DCI format 0 (DCI format 0_0), the UL PTRS port is associated with DMRS port 0.

For non-codebook-based UL transmissions, the actual number of UL PTRS ports transmitted is indicated by the parameter rrc-ConfiguredUplinkGrant or the SRS resource indication information in DCI format 0_1 or DCI format 0_2 (i.e., the UE determines the number based on the SRS resource indication information), which is indicated by the Sounding Reference Information (SRI) in DCI format 0_1 or DCI format 0_2 or the higher-layer parameter sri-ResourceIndicator in rrc-ConfiguredUplinkGrant. If the eNB configures PTRS for the UE (i.e., the parameter phaseTrackingRS is configured in DMRS-UplinkConfig), the higher-layer parameter ptrs-PortIndex is used to configure a PTRS port index for each configured SRS resource. If the PTRS port index associated with different SRIs is the same, the corresponding UL DMRS ports are associated with the same UL PTRS port.

For partially coherent and non-coherent codebook-based UL transmissions, the UE determines the actual number of UL PTRS ports based on the precoding matrix information sent by the base station. This means the number of layers specified in the "Precoding information and number of layers" field in the TPMI and/or DCI format 0_1 and DCI format 0_2, or the number of layers configured by the higher-layer parameter precodingAndNumberOfLayers.

If the base station configures the high-layer parameter maxNrofPorts to 'n2' for the UE in PTRS-UplinkConfig, the actual UL PTRS port and the associated transport layer are determined based on the Transmitted Precoding Matrix Indicator (TPMI): PUSCH antenna ports 1000 and 1002 corresponding to TPMI share PTRS port 0. PUSCH antenna ports 1001 and 1003 under TPMI share PTRS port 1.

UL PTRS port 0 is associated with UL layer 'x' in the PUSCH transmission layer. UL layer 'x' is the layer transmitted via PUSCH antenna port 1000 and PUSCH antenna port 1002 in the layers indicated by the TPMI. UL PTRS port 0 is associated with UL layer 'x' in the PUSCH transmission layer. UL layer 'x' is the layer transmitted via PUSCH antenna port 1000 and PUSCH antenna port 1002 in the layers indicated by the TPMI. UL PTRS port 1 is associated with UL layer 'y' in the PUSCH transmission layer. UL layer 'x' is the layer transmitted via PUSCH antenna port 1001 and PUSCH antenna port 1003 in the layers indicated by the TPMI. 'x' and/or 'y' are given by the DCI parameter PTRS-DMRS association.

In fully coherent transmission, all PUSCH antenna ports are coherent, requiring only one PTRS port. Therefore, when the maximum number of PUSCH transmission layers is 1, there is only one DMRS port, and the PTRS port is associated with that DMRS port, eliminating the need to indicate the association between the PTRS and DMRS ports. When the maximum number of PUSCH transmission layers is greater than 2, the PTRS and DMRS port association field in the DCI is used to indicate the DMRS port associated with the PTRS.

When performing partially coherent or non-coherent transmission, if the maximum number of PTRS ports is configured as 1, the determination and indication of the PTRS port-DMRS association is the same as when the UE capability is full-coherent. When the maximum number of PTRS ports is configured as 2, for 4Tx PUSCH, the PUSCH antenna ports corresponding to the PUSCH transmission have the following mapping relationship with the PTRS ports: the first and third antenna ports of the PUSCH (i.e., PUSCH antenna ports 1000 and 1002) share the first PTRS port, and the second and fourth antenna ports of the PUSCH (PUSCH antenna ports 1001 and 1003) share the second PTRS port. The actual number of PTRS ports transmitted is determined by the TPMI and Transmitted Rank Indicator (TRI) corresponding to the PUSCH transmission. If all data flows indicated by the TPMI and TRI are mapped to PUSCH antenna ports 1 and 3, or if all data flows indicated by the TPMI and TRI are mapped to PUSCH antenna ports 2 and 4, only one PTRS port is actually transmitted. Otherwise, two PTRS ports are transmitted, one associated with the DMRS ports mapped to PUSCH antenna ports 1 and 3, and the other associated with the DMRS ports mapped to PUSCH antenna ports 2 and 4. When transmitting two PTRS ports, the most significant bit (MSB) of the PTRS and DMRS port association field in the DCI is used to indicate the DMRS port associated with the first PTRS port transmission, and the least significant bit (LSB) is used to indicate the DMRS port associated with the second PTRS port transmission. When the maximum number of PTRS ports is configured as 2, for a 2-Tx PUSCH, each PTRS port is associated with one DMRS port. The actual number of PTRS ports transmitted depends on the number of PUSCH data flows.

When the number of PUSCH antenna ports exceeds four, existing technologies do not yet have a solution that can fully increase the PTRS transmission power within the terminal's PA capabilities, resulting in failure to achieve optimal PTRS transmission performance.

To address the above technical issues, an embodiment of the present invention proposes a method for determining PTRS transmission power, which determines the power ratio between PTRS and a physical uplink shared channel (PUSCH) based on first information. The first information includes one or more of the following information: the number of PUSCH layers of a shared antenna port or antenna port group associated with the PUSCH layer associated with the PTRS, the number of PUSCH layers of a shared antenna port, the codebook subset corresponding to PUSCH transmission, or a parameter used to indicate the codebook subset corresponding to PUSCH transmission. The PTRS transmission power is then determined based on the PTRS-to-PUSCH power ratio, thereby fully utilizing the available power while taking into account the UE's PA capabilities to achieve optimal PTRS transmission performance.

To further clarify the objectives, technical solutions, and advantages of the embodiments of the present invention, the following will provide a clear and complete description of the technical solutions of the embodiments of the present invention, in conjunction with the accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, and not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without making further improvements are also within the scope of protection of the present invention.

Figure 1 is a flowchart of a method for determining PTRS transmit power according to an embodiment of the present invention. As shown in Figure 1 , the present invention provides a method for determining PTRS transmit power, which can be performed by a terminal, such as a mobile phone. The method includes: Step 101: Determining a PTRS-to-PUSCH power ratio based on first information; the first information includes one or more of the following: The number of PUSCH layers associated with the PTRS sharing a common antenna port or antenna port group; The number of PUSCH layers sharing a common antenna port; The codebook subset corresponding to the PUSCH transmission; A parameter indicating the codebook subset corresponding to the PUSCH transmission.

Specifically, the terminal determines the power ratio of PTRS to PUSCH based on first information, where the first information includes that the PUSCH layer associated with the PTRS is the PUSCH layer associated with transmission of the PTRS and/or the PUSCH layer associated with the DMRS associated with the PTRS.

For example, the PUSCH layer associated with the PTRS is the PUSCH layer corresponding to the DMRS (or DMRS port) indicated by the base station for the PTRS through PTRS-DMRS association signaling.

For another example, the PUSCH layer associated with the PTRS is a PUSCH layer with the same precoding scheme as that of the PTRS.

For another example, the PUSCH layer associated with the PTRS is a PUSCH layer whose corresponding DMRS port is a DMRS port used to determine one or more of the PTRS transmission power, the PTRS time domain transmission position, the PTRS frequency domain transmission position, the PTRS precoding matrix, etc. It can be understood that if the DMRS port corresponding to the PUSCH layer is a DMRS port used to determine information such as the PTRS transmission power, the PTRS time domain transmission position, the PTRS frequency domain transmission position, and/or the PTRS precoding matrix, then the PUSCH layer is associated with the PTRS.

For another example, the PUSCH layer associated with the PTRS is a PUSCH layer used to determine one or more of the transmission power of the PTRS, the time domain transmission position of the PTRS, the frequency domain transmission position of the PTRS, the precoding matrix of the PTRS, etc.

The first information may include the number of PUSCH layers that share an antenna port or antenna port group with the PUSCH layer associated with the PTRS, i.e., the number of PUSCH layers that share an antenna port or antenna port group with a specified PUSCH layer, where the specified PUSCH layer is the PUSCH layer associated with the PTRS. The terminal determines the PTRS-to-PUSCH power ratio based on the number of PUSCH layers that share an antenna port or antenna port group with the PUSCH layer associated with the PTRS.

For example, the terminal determines which PUSCH layers are to be transmitted at non-zero power using some of the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power: The terminal first determines which antenna ports are to be used for transmitting the PUSCH layer associated with the PTRS at non-zero power, and then determines which PUSCH layers are to be transmitted at non-zero power using some of these antenna ports. The PUSCH layers ultimately determined share antenna ports with the PUSCH layer associated with the PTRS, and the number of these PUSCH layers serves as the first information. The power ratio between the PTRS and PUSCH is then determined based on this number of PUSCH layers.

For another example, the terminal determines that all antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power utilize antenna ports for non-zero power transmission. That is, all antenna ports that transmit at non-zero power are antenna ports that transmit at non-zero power in the PUSCH layer associated with the PTRS. The terminal first determines which antenna ports transmit the PUSCH layer associated with the PTRS at non-zero power, and then determines which PUSCH layers utilize antenna ports within these antenna ports for non-zero power transmission. The ultimately determined PUSCH layers share antenna ports with the PUSCH layer associated with the PTRS. This PUSCH layer number serves as the first information. The PTRS-to-PUSCH power ratio is then determined based on this PUSCH layer number.

For another example, the terminal determines a PUSCH layer to be transmitted at non-zero power using the same antenna port as one of the antenna ports that transmits the PUSCH layer associated with the PTRS at non-zero power: The terminal first determines the antenna ports on which the PUSCH layer associated with the PTRS is transmitted at non-zero power, and then determines a PUSCH layer to be transmitted at non-zero power using all of these antenna ports. The PUSCH layer ultimately determined shares the same antenna port as the PUSCH layer associated with the PTRS, and the number of this PUSCH layer serves as the first information. The PTRS-to-PUSCH power ratio is then determined based on this number of PUSCH layers.

For another example, the terminal first determines which PUSCH layers are transmitted at non-zero power using antenna ports in the same antenna port group as the antenna ports transmitting the PUSCH layer associated with the PTRS at non-zero power: The terminal first determines which antenna ports transmit the PUSCH layer associated with the PTRS at non-zero power, then determines which antenna port group these antenna ports belong to, and then determines which PUSCH layers are transmitted at non-zero power using antenna ports in the same antenna port group. The PUSCH layer ultimately determined shares the same antenna port group as the PUSCH layer associated with the PTRS. This PUSCH layer number serves as the first information. The PTRS-to-PUSCH power ratio is then determined based on this PUSCH layer number.

In this embodiment of the present invention, the first information may further include the number of PUSCH layers of the shared antenna port. The terminal determines the PTRS to PUSCH power ratio based on the number of PUSCH layers of the shared antenna port.

For example, the terminal determines the PUSCH layers that use the same antenna port for non-zero power transmission. The PUSCH layers that use the same antenna port for non-zero power transmission share the same antenna port. The number of PUSCH layers that use the same antenna port for non-zero power transmission is the first information. The terminal determines the power ratio of PTRS to PUSCH based on the number of PUSCH layers that use the same antenna port for non-zero power transmission.

For another example, the terminal determines that antenna ports transmitting at non-zero power are included in a PUSCH layer. This means that antenna ports transmitting at non-zero power in a certain PUSCH layer are included in antenna ports transmitting at non-zero power in another PUSCH layer. The inclusion of antenna ports in this PUSCH layer may include one or more of the following: a PUSCH layer that uses some of the antenna ports transmitting at non-zero power mapped to the other PUSCH layer; a PUSCH layer that uses antenna ports within the antenna ports transmitting at non-zero power mapped to the other PUSCH layer; or a PUSCH layer that uses the same antenna port as the antenna port transmitting at non-zero power mapped to the other PUSCH layer. The PUSCH layers involved in the non-zero power transmission antenna port share the same antenna port. The number of the PUSCH layers involved in the non-zero power transmission antenna port is the first information. The terminal determines the PTRS to PUSCH power ratio based on the number of the PUSCH layers involved in the non-zero power transmission antenna port.

For another example, the terminal determines that overlapping PUSCH layers exist in antenna ports transmitting at non-zero power. The presence of overlapping PUSCH layers in antenna ports transmitting at non-zero power means that the same PUSCH layer exists in antenna ports transmitting at non-zero power. That is, if two PUSCH layers are transmitted at non-zero power on at least one antenna port, then the two PUSCH layers are considered overlapping PUSCH layers in the antenna port transmitting at non-zero power. The number of overlapping PUSCH layers in the antenna ports transmitting at non-zero power is the first information. The terminal determines the PTRS to PUSCH power ratio based on the number of overlapping PUSCH layers in the antenna ports transmitting at non-zero power.

For another example, the terminal determines PUSCH layers that share the same antenna port group. These PUSCH layers refer to PUSCH layers in which the antenna port transmitting at non-zero power and the antenna port transmitting at non-zero power mapped to another PUSCH layer are in the same antenna port group. The number of these PUSCH layers sharing the same antenna port group is the first information. The terminal determines the PTRS to PUSCH power ratio based on this number of PUSCH layers sharing the same antenna port group.

In this embodiment of the present invention, the first information may further include a codebook subset corresponding to PUSCH transmission. The terminal determines the power ratio of PTRS to PUSCH based on the codebook subset corresponding to PUSCH transmission.

For example, the terminal determines that the codebook subset corresponding to PUSCH transmission is codebook subset 2, then determines that the indicator table of the power ratio of PTRS to PUSCH corresponding to codebook subset 2 is indicator table 3, and the terminal determines the power ratio of PTRS to PUSCH based on indicator table 3.

In this embodiment of the present invention, the first information may further include a parameter for indicating a codebook subset corresponding to PUSCH transmission. The terminal determines the power ratio of PTRS to PUSCH based on the parameter for indicating the codebook subset corresponding to PUSCH transmission.

For example, the terminal determines that the codebook subset corresponding to PUSCH transmission is codebook subset 1 based on the parameter used to indicate the codebook subset corresponding to PUSCH transmission, then determines that the indication table of the power ratio of PTRS to PUSCH corresponding to codebook subset 1 is indication table 1, and the terminal determines the power ratio of PTRS to PUSCH based on this indication table 1.

For another example, the terminal determines that the parameter for indicating the codebook subset corresponding to PUSCH transmission includes a parameter for indicating the PUSCH coherent transmission antenna group, and based on the parameter for indicating the PUSCH coherent transmission antenna group, determines that the corresponding indication table for the power ratio of PTRS to PUSCH is indication table 1. The terminal determines the power ratio of PTRS to PUSCH based on indication table 1.

For another example, the terminal determines the parameter for indicating the PUSCH coherent transmission antenna group included in the parameter for indicating the codebook subset corresponding to PUSCH transmission, thereby determining the parameter for indicating the number of PUSCH coherent transmission antenna groups included in the parameter for indicating the PUSCH coherent transmission antenna group. The parameter for indicating the number of PUSCH coherent transmission antenna groups indicates that the number of PUSCH coherent transmission antenna groups is 4. The indication table for the power ratio of PTRS to PUSCH corresponding to the number of PUSCH coherent transmission antenna groups is determined to be indication table 1. The terminal determines the power ratio of PTRS to PUSCH based on indication table 1.

It should be noted that in the embodiment of the present invention, the PTRS to PUSCH power ratio may refer to the PTRS to PUSCH power ratio per layer per RE.

Step 102: Determine the transmission power of the PTRS based on the power ratio of the PTRS to the PUSCH.

Specifically, after determining the power ratio of PTRS to PUSCH, the terminal determines the transmission power of PTRS based on the power ratio of PTRS to PUSCH and the transmission power of PUSCH.

For example, the terminal determines the power ratio of PTRS to PUSCH for ,in, The number of PUSCH layers that share the same antenna port or antenna port group with the PUSCH layer associated with PTRS, or the number of PUSCH layers that share the same antenna port. Calculate the PTRS scaling factor for , then calculate the product of the PTRS scaling factor and the PUSCH transmission power P ₀ , and get the PTRS transmission power as .

The PTRS transmission power determination method provided by the embodiments of the present invention determines the PTRS to PUSCH power ratio based on first information. The first information may include the number of PUSCH layers sharing an antenna port or antenna port group associated with the PTRS-associated PUSCH layer, the number of PUSCH layers sharing an antenna port, the codebook subset corresponding to PUSCH transmission, or a parameter used to indicate the codebook subset corresponding to PUSCH transmission. This method fully utilizes the available power when the number of PUSCH antenna ports reaches 8 or more, thereby achieving optimal PTRS transmission performance.

Specifically, the terminal may also determine a PTRS to PUSCH power ratio based on second information, and then determine the PTRS transmission power based on the PTRS to PUSCH power ratio; the second information includes one or more of the following information: the number of PTRS ports associated with PUSCH transmission; the number of PTRS ports configured by the network device for the terminal; or, the number of PUSCH layers; the PTRS to PUSCH power ratio includes one or more of the following information: ; ; ; ; ; ; 7; 7.78; 8.45; or 9; of which, This represents the number of PTRS ports associated with PUSCH transmissions, or the number of PTRS ports configured by the network device for the terminal. Alternatively, the number of PTRS ports associated with PUSCH transmissions can refer to the number of PTRS ports associated with PUSCH transmissions. Alternatively, the number of PTRS ports configured by the network device for the terminal can refer to the number of PTRS ports on which the UE is scheduled in the uplink. This refers to the number of PTRS ports associated with PUSCH, or the number of PTRS ports on which the UE is scheduled in the uplink. The unit for each PTRS to PUSCH power ratio is dB.

For example, the terminal determines the number of PTRS ports associated with the PUSCH transmission in the second information. Determine the power ratio of PTRS to PUSCH for , according to the formula Calculate the PTRS scaling factor for , then calculate the product of the PTRS scaling factor and the PUSCH transmission power P ₀ , and get the PTRS transmission power as .

For another example, the number of PUSCH layers is 6, and the terminal determines the power ratio of PTRS to PUSCH based on the number of PUSCH layers. is 7.78, according to the formula Calculate the PTRS scaling factor for , then calculate the product of the PTRS scaling factor and the PUSCH transmission power P ₀ , and get the PTRS transmission power as .

For example, if the number of PUSCH layers is 7, the terminal will determine the number of PTRS ports associated with the PUSCH transmission based on the number of PUSCH layers and the number of PTRS ports associated with the PUSCH transmission. Determine the power ratio of PTRS to PUSCH for , according to the formula Calculate the PTRS scaling factor for , then calculate the product of the PTRS scaling factor and the PUSCH transmission power P ₀ , and get the PTRS transmission power as .

In the PTRS transmission power determination method provided by the embodiment of the present invention, a terminal determines the PTRS to PUSCH power ratio based on the second information, and then determines the PTRS transmission power based on the PTRS to PUSCH power ratio. This improves the efficiency of PTRS transmission power determination while ensuring optimal PTRS transmission performance.

The following is a further explanation of the PTRS transmission power determination method provided by the above embodiment through a specific example: Example 1: For the improvement of PTRS transmission power, two UE capabilities are considered. First, when the parameter used to indicate the power ratio of PTRS to PUSCH (for example, the high-layer parameter ptrs -Power ) is "01", the transmission power of the PTRS port can be borrowed from all other layers, that is, when the number of PUSCH layers is L , the power ratio α of PTRS to PUSCH is dB.

Secondly, when the parameter used to indicate the power ratio of PTRS to PUSCH is "00", assuming that the maximum transmit power of each PA at the terminal is Pmax/N, where N is the maximum number of antenna ports supported by the UE, the following situations can be considered: 1. For non-codebook PUSCH transmission: The value of α is dB (3 if more than two PTRS ports are considered) 3dB). This is because for non-codebook-based PUSCH transmission, whether two PUSCH layers sharing the same PTRS port use the same PA(s) for transmission depends on the UE implementation, and the base station (gNB) is unaware of this. Therefore, the gNB should not assume that the PTRS port can borrow power from other PUSCH layers sharing the same PTRS port, but can only borrow power from the muted resource elements (REs) generated by the transmission of other PTRS ports. 2. For PUSCH transmission based on a fully coherent codebook: When the number of PUSCH layers is L , the α value of the PTRS port is dB. This is because for PUSCH transmission based on a fully coherent codebook, all PUSCH layers share the same PA and the same PTRS port. The UE can borrow transmission power from all other PUSCH layers; 3. For PUSCH transmission based on a non-coherent codebook: The value of α is dB (3 if more than two PTRS ports are considered) 3dB). This is because for PUSCH transmission based on non-coherent codebooks, different PUSCH layers will use different PAs for transmission. The UE cannot borrow power from the PUSCH layer that shares the same PTRS port, but can only borrow power from the weakened REs due to the transmission of other PTRS ports. 4. For PUSCH transmission based on partially coherent codebooks: When the number of PUSCH layers is L , the α value of the PTRS port is dB, where The number of PUSCH layers where the antenna port transmitting with non-zero power shares the same non-zero power antenna port as the PUSCH layer associated with PTRS (i.e., the PUSCH layer indicated by the "PTRS-DMRS association " field, or based on a predefined PUSCH layer). For the UL 8Tx partially coherent codebook, any two PUSCH layers can share the same non-zero power antenna port, or they can share no non-zero power antenna port. The four coherently transmitting antenna ports can be divided into two groups, each associated with one PUSCH layer. This means that PTRS can borrow power from PUSCH layers that share the same non-zero power antenna port as the PTRS-associated PUSCH layer, as well as power from weakened REs due to transmissions from other PTRS ports. However, PTRS cannot borrow power from a different PUSCH layer corresponding to an antenna port that transmits the PUSCH layer associated with the PTRS port with non-zero power, regardless of whether the two antenna ports with non-zero power transmissions of the PUSCH layer are in the same or different coherence groups. This is because different antenna ports are assumed to use different PAs.

In some embodiments, a network device may indicate to a terminal a method for determining the power ratio of the PTRS to the PUSCH, and the terminal may then determine the power ratio of the PTRS to the PUSCH based on the method. The network device may first determine the method for determining the power ratio of the PTRS to the PUSCH, and then send information indicating the method for determining the power ratio of the PTRS to the PUSCH to the terminal. After receiving the information indicating the method for determining the power ratio of the PTRS to the PUSCH, the terminal may determine the method for determining the power ratio of the PTRS to the PUSCH by determining the power ratio of the PTRS to the PUSCH based on the first information.

The information indicating how to determine the power ratio between PTRS and PUSCH is indicated by the high-layer parameter ptrs-Power.

In some embodiments, when the first information includes a codebook subset corresponding to PUSCH transmission, determining the PTRS to PUSCH power ratio based on the first information includes: Determining a precoding matrix and/or the number of PUSCH layers; Determining the PTRS to PUSCH power ratio based on the first information and the precoding matrix and/or the number of PUSCH layers.

Specifically, the terminal determines a precoding matrix and/or the number of PUSCH layers for the PUSCH, and determines a power ratio of the PTRS to the PUSCH based on the first information and the precoding matrix and/or the number of PUSCH layers.

Optionally, the terminal determines the coherence type of the PUSCH precoding matrix, and based on the coherence type of the precoding matrix, determines the power ratio α of PTRS to PUSCH. For example, at least one of the following is included: If the terminal determines that the type of the PUSCH precoding matrix is fully coherent precoding, then when the number of PUSCH layers is L , the power ratio α of PTRS to PUSCH is dB. The terminal determines that the type of PUSCH precoding matrix is non-coherent precoding, then the power ratio α of PTRS to PUSCH is dB or, when the number of PUSCH transmission layers is 1, the value of α is 0dB, when the number of PUSCH transmission layers is greater than 1, the value of α is dB.

The terminal determines that the type of the PUSCH precoding matrix is partially coherent precoding, and the value of the power ratio α between PTRS and PUSCH is determined based on the number of PUSCH layers that share the antenna port or antenna port group associated with the PUSCH layer associated with the PTRS. dB. Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports configured by the network device for the PUSCH associated with this PTRS; Indicates the number of PUSCH layers (or the total number of layers).

One understanding of a fully coherent precoding matrix is that, in the layers corresponding to the fully coherent precoding matrix, at least one layer is transmitted at non-zero power on all antenna ports. Such antenna ports are PUSCH ports and/or SRS ports. One understanding of an incoherent precoding matrix is that, in the layers corresponding to the incoherent precoding matrix, any layer is transmitted at non-zero power on only one antenna port. Such antenna ports are PUSCH ports and/or SRS ports. One understanding of a partially coherent precoding matrix is that, in the layers corresponding to the partially coherent precoding matrix, any layer is transmitted at non-zero power on only some antenna ports, and at least one layer is transmitted at non-zero power on multiple antenna ports. The antenna port is a PUSCH port and/or an SRS port.

In some embodiments, determining the PTRS to PUSCH power ratio based on the first information further includes: Determining the PTRS to PUSCH power ratio based on a PUSCH transmission mode.

Optionally, the terminal determines a PUSCH transmission mode. When the PUSCH transmission mode is determined to be codebook-based PUSCH transmission, the terminal further determines a PUSCH transmission coherence type, and based on the PUSCH transmission coherence type, determines a PTRS to PUSCH power ratio α . For example, at least one of the following is included: If the terminal determines that the PUSCH coherence transmission type is fully coherent transmission, then when the number of PUSCH layers is L , the PTRS to PUSCH power ratio α is dB.

The terminal determines that the coherent transmission type of PUSCH is incoherent transmission, and the power ratio α of PTRS to PUSCH is dB or, when the number of PUSCH transmission layers is 1, the value of α is 0dB, when the number of PUSCH transmission layers is greater than 1, the value of α is dB.

The terminal determines that the coherent transmission type of PUSCH is partially coherent transmission, and the value of the power ratio α between PTRS and PUSCH is determined based on the number of PUSCH layers that share the antenna port or antenna port group associated with the PUSCH layer associated with the PTRS. dB. Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports configured by the network device for the PUSCH associated with this PTRS; Indicates the number of PUSCH layers (or the total number of layers).

Optionally, the coherent transmission type of the PUSCH is determined based on the precoding matrix used for the PUSCH transmission, or the precoding matrix indication information (TPMI) regarding the PUSCH sent by the network device to the terminal. If the precoding matrix indicated by the TPMI is a fully coherent precoding matrix, the coherent transmission type of the PUSCH is fully coherent transmission; if the precoding matrix indicated by the TPMI is an incoherent precoding matrix, the coherent transmission type of the PUSCH is incoherent transmission; if the precoding matrix indicated by the TPMI is a partially coherent precoding matrix, the coherent transmission type of the PUSCH is partially coherent transmission.

One understanding of a fully coherent precoding matrix is that, in the layers corresponding to the fully coherent precoding matrix, at least one layer is transmitted at non-zero power on all antenna ports. Such antenna ports are PUSCH ports and/or SRS ports. One understanding of an incoherent precoding matrix is that, in the layers corresponding to the incoherent precoding matrix, any layer is transmitted at non-zero power on only one antenna port. Such antenna ports are PUSCH ports and/or SRS ports. One understanding of a partially coherent precoding matrix is that, in the layers corresponding to the partially coherent precoding matrix, any layer is transmitted at non-zero power on only some antenna ports, and at least one layer is transmitted at non-zero power on multiple antenna ports. The antenna port is a PUSCH port and/or an SRS port.

In some embodiments, determining the power ratio of PTRS to PUSCH based on the first information includes: Determine the power ratio of PTRS to PUSCH; or, based on Determine the first value and based on Determine a second value; Determine a PTRS to PUSCH power ratio based on the sum of the first value and the second value; or, Calculate and The product of and The power ratio of PTRS to PUSCH is determined by multiplying Determine the first value and based on Determine the second value based on Determine a fourth value; calculate the sum of the first value and the second value; determine a PTRS to PUSCH power ratio based on a minimum value of the sum of the first value and the second value and the fourth value; or, based on and The product of determines the third value, and based on Determine a fourth value; Determine a PTRS to PUSCH power ratio based on a minimum value between the third value and the fourth value; or, and The product of The minimum value of determines the power ratio of PTRS to PUSCH; Calculate and The product of and The product of The minimum value of determines the power ratio of PTRS to PUSCH; or, based on and The product of determines a third value, and the third value is used as the power ratio of PTRS to PUSCH; or, calculate and The product of and The product of is the power ratio of PTRS to PUSCH; or, based on Determine the first value and based on Determine the second value based on Determine a fourth value; Calculate the sum of the first value and the second value, and use the minimum value of the sum of the first value and the second value and the fourth value as the power ratio of PTRS to PUSCH; or, Based on and The product of determines the third value, and based on Determine a fourth value, and use the minimum value between the third value and the fourth value as the power ratio of PTRS to PUSCH; or, based on the and The product of The fifth value is determined as the minimum value of , and the fifth value is used as the power ratio of PTRS to PUSCH; Calculate and The product of and The product of The minimum value among them is taken as the power ratio of PTRS to PUSCH; Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal. L indicates the number of PUSCH layers.

Specifically, the terminal determines the power ratio of PTRS to PUSCH based on the first information and/or the number of PTRS ports associated with the PUSCH associated with the PTRS. The first information can be the number of PUSCH layers of the shared antenna port or antenna port group of the PUSCH layer associated with the PTRS, or the number of PUSCH layers of the shared antenna port.

For example, the first information is recorded as ,determine The logarithm of , and use this value as the power ratio of PTRS to PUSCH.

For another example, the first information is recorded as ,determine The logarithm of That is, the first value, and the number of PTRS ports associated with the PUSCH associated with the PTRS The logarithm of That is the second value, and then calculate the sum of the first value and the second value, the sum of the first value and the second value is As the power ratio of PTRS to PUSCH.

For another example, let the first information be The number of PTRS ports associated with the PUSCH associated with this PTRS is ,calculate and and take the logarithm of the product That is, the third value is used as the power ratio of PTRS to PUSCH. For another example, the first information is recorded as The number of PTRS ports associated with the PUSCH associated with this PTRS is ,calculate and The product of and The product of As the power ratio of PTRS to PUSCH.

For another example, let the first information be The number of PTRS ports associated with the PUSCH associated with this PTRS is , the number of PUSCH layers associated with this PTRS is ,calculate The logarithm of That is, the first value, The logarithm of That is, the second value, The logarithm of That is, the fourth value, calculate the sum of the first value and the second value, calculate the minimum value between the sum and the fourth value, that is, take 、 The minimum value between the two is used as the power ratio of PTRS to PUSCH.

For another example, let the first information be The number of PTRS ports associated with the PUSCH associated with this PTRS is , the number of PUSCH layers associated with this PTRS is ,calculate and The product of and taking the logarithm gives That is the third value, and calculate The logarithm of That is, the fourth value, the minimum value of the third value and the fourth value is taken as the power ratio of PTRS to PUSCH. For another example, the first information is recorded as The number of PTRS ports associated with the PUSCH associated with this PTRS is , the number of PUSCH layers associated with this PTRS is ,calculate and The product of , and calculate and The minimum value in That is, the fifth value is the power ratio of PTRS to PUSCH.

For another example, let the first information be The number of PTRS ports associated with the PUSCH associated with this PTRS is , the number of PUSCH layers associated with this PTRS is ,calculate and The product of ,will and The minimum value is taken as the power ratio of PTRS to PUSCH.

In some embodiments, the power ratio of the PTRS to the PUSCH determined based on the first information may be in one or more of the following forms: ; ; ; ; ; ; ;or ; in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers.

The number of PUSCH layers refers to the number of PUSCH layers that share the PTRS, or the number of PUSCH layers associated with the PTRS.

The following is a specific example to further illustrate the PTRS transmission power determination method provided by the above embodiment: Example 2: According to the precoding matrix and/or the number of PUSCH layers, the power ratio of the PTRS to the PUSCH corresponding to the precoding matrix and the number of PUSCH layers is determined as follows: , based on the first information , that is, the number of PUSCH layers or the number of PUSCH layers that share the same antenna port or antenna port group with the PUSCH layer associated with the PTRS, the power ratio of the PTRS to the PUSCH can be calculated. If each column of the precoding matrix corresponds to a PUSCH layer and the eight values in each column correspond to eight ports, the power ratio of the PTRS to the PUSCH can be determined by one or more of the following: 1. When the number of PUSCH layers is =1, the power ratio of PTRS to PUSCH is 0; 2. When the number of PUSCH layers is =2: Optionally, the PUSCH precoding matrix is in the form of In this case, the power ratio of PTRS to PUSCH is 3 -3dB; Optionally, the PUSCH precoding matrix is in the form of , , , In this case, the power ratio of PTRS to PUSCH is 3 -3dB; the precoding matrix of PUSCH is in the form of , In the case of , the power ratio of PTRS to PUSCH is 3dB; Optionally, the precoding matrix of PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 3 -3dB; Optionally, the PUSCH precoding matrix is in the form of In the case of PTRS, the power ratio of PUSCH is 3dB; 3. When the number of PUSCH layers is =3: Optionally, the PUSCH precoding matrix is in the form of The power ratio of PTRS to PUSCH is 3 -3dB; or, for a PTRS port associated with only one PUSCH layer, the PTRS to PUSCH power ratio is 3 -3dB, for a PTRS port associated with two PUSCH layers, the power ratio of PTRS to PUSCH is 4.77dB or 3dB; or, the power ratio of PTRS to PUSCH is dB, or dB, or dB, or .

Optionally, the precoding matrix for PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 3 -3dB; or, for a PTRS port associated with only one PUSCH layer, the PTRS to PUSCH power ratio is 3 -3dB, for a PTRS port associated with two PUSCH layers, the PTRS to PUSCH power ratio is 4.77dB or 3 dB; or, the power ratio of PTRS to PUSCH is dB, or dB, or dB, or .

Optionally, the precoding matrix for PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 3 -3dB; or, for a PTRS port associated with only one PUSCH layer, the PTRS to PUSCH power ratio is 3 -3dB, for a PTRS port associated with two PUSCH layers, the power ratio of PTRS to PUSCH is 4.77dB or 3dB; or, the power ratio of PTRS to PUSCH is dB, or dB, or dB , or .

Optionally, the precoding matrix for PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 4.77dB.

Optionally, the precoding matrix for PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 3 -3dB; or, for a PTRS port associated with only one PUSCH layer, the PTRS to PUSCH power ratio is 3 -3dB, for a PTRS port associated with two PUSCH layers, the power ratio of PTRS to PUSCH is 4.77dB or 3dB; or, the power ratio of PTRS to PUSCH is dB, or dB, or dB , or .

4. When the number of PUSCH layers =4: Optionally, the PUSCH precoding matrix is in the form of In this case, the power ratio of PTRS to PUSCH is 3 dB.

Optionally, the precoding matrix for PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 3 -3dB; or, for a PTRS port associated with only one PUSCH layer, the PTRS to PUSCH power ratio is 3 -3dB, for a PTRS port associated with two PUSCH layers, the power ratio of PTRS to PUSCH is 3 dB or 3dB; or, the power ratio of PTRS to PUSCH is dB, or dB, or dB, or .

Optionally, the precoding matrix for PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 6dB.

Optionally, the precoding matrix for PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 3 dB.

Optionally, the precoding matrix for PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 3 -3dB; or, the power ratio of PTRS to PUSCH is dB, or dB, or dB, or .

5. When the number of PUSCH layers =5: Optionally, the PUSCH precoding matrix is in the form of In this case, the power ratio of PTRS to PUSCH is 3 dB; or, the power ratio of PTRS to PUSCH is dB, or dB, or dB, or Or, for a PTRS port associated with two PUSCH layers, the PTRS to PUSCH power ratio is 3 dB, for a PTRS port associated with three PUSCH layers, the power ratio of PTRS to PUSCH is dB, or dB, or ,or dB.

Optionally, the precoding matrix for PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 3 - 3dB; or, the power ratio of PTRS to PUSCH is dB, or dB, or dB, or Or, for a PTRS port associated with two PUSCH layers, the PTRS to PUSCH power ratio is 3 dB, for a PTRS port associated with three PUSCH layers, the power ratio of PTRS to PUSCH is dB, or dB, or ,or dB.

Optionally, the precoding matrix for PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 3 - 3dB; or, the power ratio of PTRS to PUSCH is dB, or dB, or dB, or Or, for a PTRS port associated with two PUSCH layers, the PTRS to PUSCH power ratio is 3 dB, for a PTRS port associated with three PUSCH layers, the power ratio of PTRS to PUSCH is 3 -3dB.

Optionally, the precoding matrix for PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 3 -3dB; or, the power ratio of PTRS to PUSCH is dB, or dB, or dB, or Or, for a PTRS port associated with two PUSCH layers, the PTRS to PUSCH power ratio is 3 -3dB, for a PTRS port associated with three PUSCH layers, the power ratio of PTRS to PUSCH is dB, or dB, or ,or dB.

6. When the number of PUSCH layers =6: Optionally, the PUSCH precoding matrix is in the form of In this case, the power ratio of PTRS to PUSCH is 1.77+3 dB.

Optionally, the precoding matrix for PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 3 -3dB; or, the power ratio of PTRS to PUSCH is dB, or dB, or dB, or .

7. When the number of PUSCH layers =7: Optionally, the PUSCH precoding matrix is in the form of In this case, the power ratio of PTRS to PUSCH is 1.77+3 dB; or, the power ratio of PTRS to PUSCH is dB, or dB, or dB, or Or, for a PTRS port associated with three PUSCH layers, the PTRS to PUSCH power ratio is 1.77+3 dB. For a PTRS port associated with four PUSCH layers, the power ratio of PTRS to PUSCH is: dB, or dB, or or dB, or 8.45dB, or 6dB.

Optionally, the precoding matrix for PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 3 -3dB; or, the power ratio of PTRS to PUSCH is dB, or dB, or dB, or Or, for a PTRS port associated with two coherent PUSCH layers, the PTRS to PUSCH power ratio is 3 dB, for a PTRS port associated with one PUSCH layer, the power ratio of PTRS to PUSCH is 3 -3dB.

Optionally, the precoding matrix for PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 3 -3dB; or, the power ratio of PTRS to PUSCH is dB, or dB, or dB, or .

8. When the number of PUSCH layers =8: Optionally, the PUSCH precoding matrix is in the form of In this case, the power ratio of PTRS to PUSCH is 3 +6dB; or, the power ratio of PTRS to PUSCH is dB, or dB, or dB, or .

Optionally, the precoding matrix for PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 3 ; Or, the power ratio of PTRS to PUSCH is dB, or dB, or dB, or ; or, the power ratio of PTRS to PUSCH is 3 +3dB.

Optionally, the precoding matrix for PUSCH is in the form of In this case, the power ratio of PTRS to PUSCH is 3 -3dB; or, the power ratio of PTRS to PUSCH is dB, or dB, or dB, or ; or, the power ratio of PTRS to PUSCH is 3 +3dB.

In the above precoding matrix form, x is used to indicate the location of a non-zero value. That is, a non-zero value exists at the location corresponding to x , and not all x represent the same value. Thus, x can be used to indicate an antenna port that transmits non-zero power. Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; represents the number of PUSCH layers that share the PTRS. That is, L represents the number of PUSCH layers that can use the PTRS for phase noise estimation.

In the PTRS transmission power determination method provided by the embodiment of the present invention, a terminal determines the PTRS to PUSCH power ratio based on first information, a precoding matrix, and/or the number of PUSCH layers. This provides a variety of power ratios, allowing for flexible PTRS transmission power determination and ensuring optimal PTRS transmission performance.

In some embodiments, the PUSCH layer that shares an antenna port or antenna port group with the PUSCH layer associated with the PTRS includes one or more of the following: A PUSCH layer that uses some of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer that uses all of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer in which all of the antenna ports that transmit at non-zero power are antenna ports in the PUSCH layer associated with the PTRS that transmit at non-zero power; A PUSCH layer that uses the same antenna port as the antenna port in the PUSCH layer associated with the PTRS that transmits at non-zero power for non-zero power transmission; At least one antenna port among the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power; or An antenna port that is in the same antenna port group as the antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power.

Specifically, the PUSCH layer of the PUSCH layer associated with the PTRS and sharing the antenna port includes a PUSCH layer that uses a portion of the antenna ports of the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission, a PUSCH layer that uses all of the antenna ports of the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission, and a PUSCH layer that uses all of the antenna ports of the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission. The PUSCH layers are all PUSCH layers that transmit non-zero power through antenna ports among the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power, PUSCH layers that transmit non-zero power through the same antenna port as the antenna port among the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power, and PUSCH layers that transmit non-zero power through at least one antenna port among the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power.

For example, if the PUSCH layer associated with the PTRS performs non-zero power transmission on port 1, port 2, and port 3, the PUSCH layers that use some of the antenna ports of the PUSCH layer associated with the PTRS to perform non-zero power transmission at non-zero power include: a PUSCH layer that performs non-zero power transmission on port 1, a PUSCH layer that performs non-zero power transmission on port 2, a PUSCH layer that performs non-zero power transmission on port 3, a PUSCH layer that performs non-zero power transmission on port 1 and port 2, a PUSCH layer that performs non-zero power transmission on port 1 and port 3, and a PUSCH layer that performs non-zero power transmission on port 2 and port 3. These PUSCH layers are all PUSCH layers of the antenna port shared by the PUSCH layer associated with the PTRS.

For another example, if the PUSCH layer associated with the PTRS performs non-zero power transmission on port 1 and port 2, then the PUSCH layers that perform non-zero power transmission on all antenna ports of the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power include: the PUSCH layer that performs non-zero power transmission on port 1 and port 2, and the PUSCH layer that performs non-zero power transmission on port 1, port 2, and port 3, etc.

For another example, if the PUSCH layer associated with the PTRS transmits non-zero power on ports 1 and 2, then all antenna ports that transmit at non-zero power are antenna ports that transmit at non-zero power on the PUSCH layer associated with the PTRS. The PUSCH layers of the antenna ports include: PUSCH layers that transmit at non-zero power on ports 1 and 2, a PUSCH layer that transmits at non-zero power on port 1, and a PUSCH layer that transmits at non-zero power on port 2. These PUSCH layers share the PUSCH layers of the antenna ports with the PUSCH layer associated with the PTRS.

For another example, if the PUSCH layer associated with the PTRS performs non-zero power transmission on port 1, port 2, and port 3, the PUSCH layer that performs non-zero power transmission is performed using the same antenna port as the antenna port among the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power, that is, the PUSCH layer that also performs non-zero power transmission on port 1, port 2, and port 3, and the PUSCH layer that shares the antenna port with the PUSCH layer associated with the PTRS.

For another example, if the antenna ports for non-zero power transmission of the PUSCH layer associated with the PTRS include ports 1 and 2, then the PUSCH layers that utilize at least one antenna port among the antenna ports for non-zero power transmission of the PUSCH layer associated with the PTRS include: a PUSCH layer for non-zero power transmission on port 1, a PUSCH layer for non-zero power transmission on port 2, and a PUSCH layer for non-zero power transmission on both ports 1 and 2. These PUSCH layers share the same antenna port with the PUSCH layer associated with the PTRS.

In this embodiment of the present invention, a PUSCH layer that transmits non-zero power using a portion of the antenna ports in the PUSCH layer associated with the PTRS can be understood as a PUSCH layer where the antenna ports transmitting non-zero power are the portion of the antenna ports in the PUSCH layer associated with the PTRS. For a PUSCH layer, if an antenna port transmits at non-zero power, then that antenna port is considered an antenna port transmitting non-zero power for that PUSCH layer. In relation to a precoding matrix, an antenna port transmitting non-zero power for a PUSCH layer can be understood as the antenna port corresponding to the non-zero element in the precoding matrix corresponding to that PUSCH layer. That is, if the element corresponding to a certain antenna port in the precoding matrix for a PUSCH layer is not 0, then this antenna port is an antenna port for non-zero power transmission for this PUSCH layer. Alternatively, if the transmission power on an antenna port for a PUSCH layer is 0, then this antenna port is not an antenna port for non-zero power transmission for this PUSCH layer. That is, if the element corresponding to a certain antenna port in the precoding matrix for a PUSCH layer is 0, then this antenna port is not an antenna port for non-zero power transmission for this PUSCH layer.

In this embodiment of the present invention, all antenna ports that transmit with non-zero power are antenna ports that transmit with non-zero power in the PUSCH layer associated with the PTRS. This can also be understood as: antenna ports that transmit with non-zero power are antenna ports that transmit with non-zero power in the PUSCH layer associated with the PTRS.

In this embodiment of the present invention, all antenna ports that transmit with non-zero power are antenna ports that transmit with non-zero power on the PUSCH layer associated with the PTRS. This can be understood as follows: all antenna ports that transmit with non-zero power are antenna ports that transmit with non-zero power on the PUSCH layer associated with the PTRS.

In this embodiment of the present invention, the use of the same antenna port for non-zero power transmission of the PUSCH layer associated with the PTRS as the antenna port for non-zero power transmission of the PUSCH layer can be understood as: the antenna port for non-zero power transmission is the same as the antenna port for non-zero power transmission of the PUSCH layer associated with the PTRS.

In this embodiment of the present invention, at least one antenna port among the antenna ports of the PUSCH layer associated with the PTRS that transmits non-zero power for the PUSCH layer can be understood as: at least one antenna port that transmits non-zero power is an antenna port among the antenna ports that transmit non-zero power for the PUSCH layer associated with the PTRS.

In the embodiment of the present invention, the use of an antenna port in the same antenna port group as the antenna port that transmits the PUSCH layer associated with the PTRS with non-zero power for non-zero power transmission can be understood as: the antenna port that transmits the PUSCH layer associated with the PTRS with non-zero power is the PUSCH layer in the same antenna port group as the antenna port that transmits the PUSCH layer associated with the PTRS with non-zero power transmission.

In this embodiment of the present invention, the PUSCH layer associated with the PTRS and sharing the same antenna port group includes a PUSCH layer that transmits non-zero power using an antenna port in the same antenna port group as the antenna port transmitting the PUSCH layer associated with the PTRS at non-zero power. The antenna port group refers to a group (i.e., a collection) of one or more antenna ports.

For example, the PUSCH layer associated with the PTRS performs non-zero power transmission on an antenna port in antenna port group 2, which consists of port 1 and port 2. The PUSCH layers that also perform non-zero power transmission on the antenna ports in antenna port group 2 include: a PUSCH layer that performs non-zero power transmission on port 1, a PUSCH layer that performs non-zero power transmission on port 2, and a PUSCH layer that performs non-zero power transmission on both port 1 and port 2. These PUSCH layers are the PUSCH layers of the antenna port group shared by the PUSCH layer associated with the PTRS.

The PTRS transmission power determination method provided in the embodiments of the present invention determines the PTRS-to-PUSCH power ratio based on the number of PUSCH layers in the antenna port or antenna port group shared by the PUSCH layer associated with the PTRS. This allows for flexible determination of the PTRS-to-PUSCH power ratio in a variety of ways, fully utilizing available power while taking into account the UE's PA capabilities, thereby maximizing PTRS transmission performance.

In some embodiments, the antenna port set is a coherent antenna port set, and/or the antenna port set includes one or more of the following: a default antenna port set; an antenna port set determined by the UE; or an antenna port set indicated by a network device.

Specifically, the antenna port group refers to a group (or set) consisting of one or more antenna ports.

In an embodiment of the present invention, the antenna port group may be a coherent antenna port group. The coherent antenna port group may be an antenna port group capable of coherent transmission.

For example, the coherent antenna port group is an antenna port group capable of coherent transmission corresponding to the coherent transmission capability of the terminal, or is a coherent transmission antenna port group corresponding to the codebook subset parameters configured by the base station for the terminal.

The coherent antenna port group may also be a coherent antenna group determined based on a precoding matrix used for PUSCH transmission associated with the PTRS.

For example, if two antenna ports are antenna ports that transmit with non-zero power on one or more PUSCH layers, that is, the corresponding elements of the precoding matrix corresponding to the two antenna ports on one or more PUSCH layers are non-zero, then the two antenna ports are considered a coherent antenna port group.

In this embodiment of the present invention, the antenna port group may also be a default antenna port group, i.e., a protocol-agreed antenna port group. For example, the base station and the UE may pre-agreed on the antenna port group through a protocol. Alternatively, the base station and the UE may pre-agreed on the grouping of the antenna port groups.

The antenna port set may also be an antenna port set determined by the UE. After determining the antenna port set, the UE indicates the antenna port set to the network device via signaling.

The antenna port group may also be an antenna port group indicated by the network device.

The following examples further illustrate the aforementioned default antenna port groups, UE-predetermined antenna port groups, or base station-indicated antenna port groups: Example 3: For example, the PUSCH transmission associated with the PTRS includes eight antenna ports (1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007, and 1008 represent the PUSCH antenna port numbers). Some ways to group the antenna ports include: Grouping method 1: {1000, 1001, 1002, 1003}, {1004, 1005, 1006, 1007}; that is, 1000, 1001, 1002, and 1003 form one group; 1004, 1005, 1006, and 1007 form another group; Grouping method 2: {1000, 1001}, {1002, 1003}, {1004, 1005}, {1006, 1007}; that is, 1000 and 1001 are one group, 1002 and 1003 are one group, 1004 and 1005 are one group, and 1006 and 1007 are one group; Grouping method 3: {1000}, {1001}, {1002}, {1003}, {1004}, {1005}, {1006}, {1007}; that is, there are 8 groups in total, one for each antenna port; Grouping method 4: {1006, 1007}, {1001, 1003, 1004, 1005, 1000, 1002}; that is, 1006 and 1007 are one group, 1001, 1003, 1004, 1005, 1000, 1002 are another group; Grouping method 5, {1000, 1002, 1004, 1006}, {1001, 1003, 1005, 1007}; that is, 1000, 1002, 1004, 1006 are one group; 1001, 1003, 1005, 1007 are another group; Grouping method 6: {1000, 1002}, {1004, 1006}, {1001, 1003}, {1005, 1007}; that is, 1000 and 1002 are a group, 1004 and 1006 are a group, 1001 and 1003 are a group, and 1005 and 1007 are a group; Grouping method 7: {1000, 1004}, {1001, 1005}, {1002, 1006}, {1003, 1007}; that is, 1000 and 1004 are a group, 1001 and 1005 are a group, 1002 and 1006 are a group, and 1003 and 1007 are a group; Grouping method 8: {1000, 1002}, {1001, 1003, 1004, 1005, 1006, 1007}; that is, 1000 and 1002 are a group, 1001, 1003, 1004, 1005, 1006, 1007 are a group; Grouping method 9, {1000, 1004}, {1001, 1003, 1002, 1005, 1006, 1007}; that is, 1000 and 1004 are a group, 1001, 1003, 1002, 1005, 1006, 1007 are a group; Grouping method 10, {1000, 1007}, {1001, 1003, 1004, 1005, 1006, 1002}; that is, 1000 and 1007 are a group, 1001, 1003, 1004, 1005, 1006, and 1002 are one group. Grouping method 11: {1000, 1001, 1004, 1005}, {1002, 1003, 1006, 1007}; that is, 1000, 1001, 1004, and 1005 are one group; 1002, 1003, 1006, and 1007 are another group.

For example, if the PUSCH transmission associated with this PTRS includes four antenna ports (1000, 1001, 1002, 1003, and 1004 represent the PUSCH antenna port numbers), there are several ways to group the antenna ports: Grouping 1: {1000, 1001}, {1002, 1003}; 1000 and 1001 form one group, and 1002 and 1003 form another group; Grouping 2: {1000, 1002}, {1001, 1003}; 1000 and 1002 form one group, and 1001 and 1003 form another group; Grouping 3: {1000}, {1001}, {1002}, {1003}, {1004}; 4 groups in total, one for each antenna port; Grouping method 4: {1000}, {1001, 1002, 1003}; that is, 1000 is a group, and 1001, 1002, and 1003 are a group. Grouping method 5: {1003}, {1001, 1002, 1000}; that is, 1003 is a group, and 1001, 1002, and 1000 are a group.

The PTRS transmission power determination method provided by the embodiments of the present invention groups antenna ports in various ways, enabling the PUSCH layer associated with the PTRS to be determined as needed to share the PUSCH layer of the same antenna port group. This fully utilizes the available power while meeting the UE's PA capabilities, thereby improving PTRS transmission performance.

In some embodiments, the PUSCH layers of the shared antenna port include one or more of the following: PUSCH layers sharing the same antenna port; or PUSCH layers sharing the same group of antenna ports.

Specifically, the PUSCH layers of a shared antenna port include PUSCH layers that share the same antenna port.

For example, the antenna ports for non-zero power transmission mapped in the first PUSCH layer are port 1, port 2, and port 3, and the antenna ports for non-zero power transmission mapped in the second PUSCH layer are also port 1, port 2, and port 3. Then, the first PUSCH layer and the second PUSCH layer share the same antenna port.

For another example, the antenna ports for non-zero power transmission mapped in the first PUSCH layer are port 1, port 2, and port 3, and the antenna ports for non-zero power transmission mapped in the second PUSCH layer are port 1 and port 2. Then, the first PUSCH layer and the second PUSCH layer share the same antenna port.

For another example, the antenna ports for non-zero power transmission mapped in the first PUSCH layer are port 1, port 2, and port 3, and the antenna ports for non-zero power transmission mapped in the second PUSCH layer are port 1, port 2, and port 4. Then, the first PUSCH layer and the second PUSCH layer share the same antenna ports, namely, port 1 and port 2.

The PUSCH layer of a shared antenna port further includes a PUSCH layer that shares the same set of antenna ports.

For example, the first PUSCH layer includes eight antenna ports (ports 1 to 8), of which ports 1 to 4 transmit at non-zero power. The antenna ports are divided into two groups: the first group consists of ports 1 to 4, and the second group consists of ports 5 to 8. If the second PUSCH layer also uses ports 1 to 4 for non-zero power transmission, it means that the second PUSCH layer and the first PUSCH layer share the same group of antenna ports.

In some embodiments, the PUSCH layers sharing the same antenna port share a power amplifier PA.

Specifically, the PUSCH layers sharing the same antenna port may be PUSCH layers sharing a power amplifier PA.

In some embodiments, the PUSCH layers sharing the same antenna port include one or more of the following: PUSCH layers using the same antenna port for non-zero power transmission; PUSCH layers containing antenna ports for non-zero power transmission; or PUSCH layers overlapping antenna ports for non-zero power transmission.

Specifically, the PUSCH layers sharing the same antenna port include PUSCH layers that use the same antenna port for non-zero power transmission.

For example, when the number of layers of PUSCH transmission is 3, the precoding matrix is in the form of The three columns correspond to the three PUSCH layers (PUSCH layer 1, PUSCH layer 2, and PUSCH layer 3), and the eight rows correspond to the eight PUSCH antenna ports (ports 1 to 8). It can be seen that PUSCH layer 1 transmits at non-zero power on ports 1 to 4, PUSCH layer 2 transmits at non-zero power on ports 1 to 4, and PUSCH layer 3 transmits at non-zero power on ports 5 to 8. The PUSCH layers that use the same antenna port for non-zero power transmission are PUSCH layer 1 and PUSCH layer 2.

In the embodiment of the present invention, the PUSCH layers sharing the same antenna port also include PUSCH layers that include antenna ports that transmit at non-zero power, that is, the antenna ports that transmit at non-zero power include these PUSCH layers.

For example, when the number of layers of PUSCH transmission is 3, the precoding matrix is in the form of The three columns correspond to the three PUSCH layers (PUSCH Layer 1, PUSCH Layer 2, and PUSCH Layer 3), and the eight rows correspond to the eight PUSCH antenna ports (Ports 1 through 8). It can be seen that PUSCH Layer 1 transmits with non-zero power on Ports 1 and 4, PUSCH Layer 2 transmits with non-zero power on Ports 1 and 2, and PUSCH Layer 3 transmits with non-zero power on Ports 5 through 8. Since Ports 1 and 2 are included in Ports 1 through 4, the PUSCH layers with non-zero power transmission on the included antenna ports are PUSCH Layers 1 and 2.

In this embodiment of the present invention, PUSCH layers sharing the same antenna port also include overlapping PUSCH layers in antenna ports with non-zero power transmission.

For example, when the number of layers of PUSCH transmission is 3, the precoding matrix is in the form of The three columns correspond to the three PUSCH layers (PUSCH layer 1, PUSCH layer 2, and PUSCH layer 3). The eight values in each column correspond to the eight antenna ports (ports 1 to 8) of the PUSCH layer. It can be seen that PUSCH layer 1 transmits with non-zero power on ports 1, 2, and 3, PUSCH layer 2 transmits with non-zero power on ports 3 and 4, and PUSCH layer 3 transmits with non-zero power on port 5. Both PUSCH layers 1 and 2 transmit with non-zero power on port 3, so the antenna ports with non-zero power transmission have overlapping PUSCH layers, namely PUSCH layers 1 and 2.

The PTRS transmission power determination method provided by the embodiments of the present invention determines the PUSCH layer of a shared antenna port through multiple methods, thereby determining the PTRS to PUSCH power ratio based on the number of PUSCH layers of the shared antenna port. This fully utilizes the available power while meeting the UE's PA capabilities, thereby improving PTRS transmission performance.

In some embodiments, the PUSCH layers sharing the same antenna port group include: PUSCH layers using antenna ports in the same antenna port group for non-zero power transmission.

Specifically, the PUSCH layers sharing the same antenna port group include PUSCH layers that use antenna ports in the same antenna port group to perform non-zero power transmission.

For example, when the number of layers of PUSCH transmission is 3, the precoding matrix is in the form of The three columns correspond to the three PUSCH layers (PUSCH Layer 1, PUSCH Layer 2, and PUSCH Layer 3). The eight values in each column correspond to the eight antenna ports (Ports 1 to 8) of the PUSCH layer. This shows that PUSCH Layer 1 transmits with non-zero power on Ports 1 and 2, PUSCH Layer 2 transmits with non-zero power on Port 3, and PUSCH Layer 3 transmits with non-zero power on Port 4. If the antenna ports are divided into two groups, one including Ports 1 to 4 and the other including Ports 5 to 8, then both PUSCH Layer 1 and PUSCH Layer 2 use antenna ports in the same antenna port group for non-zero power transmission.

In some embodiments, the antenna ports in the same antenna port group transmit coherently, and/or the antenna ports in the same antenna port group include one or more of the following: a default antenna port; an antenna port determined by the UE; or an antenna port indicated by a network device.

Specifically, the antenna ports in the same antenna port group transmit coherently.

For example, when the number of layers of PUSCH transmission is 2, the precoding matrix is in the form of , corresponding to two PUSCH layers (PUSCH layer 1 and PUSCH layer 2) and eight antenna ports (ports 1 to 8). It can be seen that PUSCH layer 1 and PUSCH layer 2 perform non-zero power transmission at both ports 1 and 2. Therefore, the antenna port group formed by ports 1 and 2 is the same antenna port group.

The antenna ports in the same antenna port group may further include one or more default antenna ports, i.e., protocol-agreed antenna ports; the antenna ports in the same antenna port group may further include antenna ports pre-determined by the UE and/or antenna ports indicated by the base station.

The PTRS transmission power determination method provided in the embodiments of the present invention categorizes antenna ports based on whether they transmit coherently, or forms antenna port groups based on preset antenna ports, UE-determined antenna ports, and/or antenna ports indicated by network devices. This allows for flexible determination of antenna port groups based on actual needs in a variety of ways. The PTRS-to-PUSCH power ratio is determined based on the number of PUSCH layers sharing the same group of antenna ports, thereby fully utilizing available power and improving PTRS transmission performance.

In some embodiments, the PUSCH transmission associated with the PTRS includes multiple PUSCH layers for a shared antenna port, where the number of PUSCH layers for the shared antenna port includes one or more of the following information: The minimum number of PUSCH layers sharing the same antenna port; The minimum number of PUSCH layers sharing the same group of antenna ports.

Specifically, the number of PUSCH layers sharing a common antenna port may be the minimum number of PUSCH layers sharing the same antenna port. The number of PUSCH layers sharing the same antenna port refers to the number of PUSCH layers in a group consisting of multiple PUSCH layers sharing the same antenna port. The group consisting of the PUSCH layers sharing the same antenna port with the least number of PUSCH layers is determined, and the number of PUSCH layers in this group is the minimum value sought.

For example, there are multiple groups of PUSCH layers (including the first and second groups). Each group of PUSCH layers shares the same antenna port. The two PUSCH layers in the first group share the same antenna port, including port 1 and port 2; the three PUSCH layers in the second group share the same antenna port, including port 3 and port 4. Therefore, the minimum number of PUSCH layers sharing the same antenna port is 2.

The number of PUSCH layers sharing a common antenna port may also be the minimum number of PUSCH layers sharing the same group of antenna ports. The number of PUSCH layers sharing the same group of antenna ports refers to the number of PUSCH layers in a group consisting of multiple PUSCH layers sharing the same group of antenna ports. The group consisting of the PUSCH layers sharing the same group of antenna ports with the least number of PUSCH layers is determined, and the number of PUSCH layers in this group is the minimum value sought.

For example, there are multiple PUSCH layers in a group (including the first and second groups). Each group of PUSCH layers shares the same set of antenna ports. The two PUSCH layers in the first group share the same coherent antenna port group (coherent antenna port group 1), and the three PUSCH layers in the second group share the same coherent antenna port group (coherent antenna port group 2). The minimum number of PUSCH layers sharing the same set of antenna ports is the minimum of 2 and 3, that is, 2.

The PTRS transmission power determination method provided in the embodiments of the present invention determines the PTRS to PUSCH power ratio based on the minimum number of PUSCH layers sharing the same antenna port, or the minimum number of PUSCH layers sharing the same group of antenna ports. The PTRS power is then determined based on this power ratio, thereby fully utilizing the available power and improving PTRS transmission performance.

In some embodiments, the parameter indicating the codebook subset corresponding to the PUSCH transmission includes a parameter indicating a PUSCH coherent transmission antenna group.

Specifically, the parameter indicating the codebook subset corresponding to PUSCH transmission includes a parameter indicating the PUSCH coherent transmission antenna group. The terminal determines the PTRS to PUSCH power ratio based on the parameter indicating the PUSCH coherent transmission antenna group.

For example, the terminal determines that the parameters used to indicate the codebook subset corresponding to PUSCH transmission include a parameter used to indicate the PUSCH coherent transmission antenna group, and based on the parameter used to indicate the PUSCH coherent transmission antenna group, determines that the corresponding indication table of the PTRS to PUSCH power ratio is indication table 1. The terminal determines the PTRS to PUSCH power ratio based on indication table 1.

In some embodiments, the parameter indicating the PUSCH coherent transmission antenna group includes a parameter indicating the number of PUSCH coherent transmission antenna groups. The terminal determines the PTRS to PUSCH power ratio based on the parameter indicating the number of PUSCH coherent transmission antenna groups.

For example, the terminal determines that the parameter for indicating the PUSCH coherent transmission antenna group includes a parameter for indicating the number of PUSCH coherent transmission antenna groups. Based on the parameter, the number of PUSCH coherent transmission antenna groups is determined to be 4. Then, the indication table for the PTRS to PUSCH power ratio corresponding to the number of PUSCH coherent transmission antenna groups is determined to be indication table 1. The terminal determines the PTRS to PUSCH power ratio based on indication table 1.

The PTRS transmission power determination method provided in the embodiments of the present invention determines the PTRS to PUSCH power ratio based on a parameter indicating the codebook subset corresponding to PUSCH transmission, a parameter indicating the PUSCH coherent transmission antenna group, or a parameter indicating the number of PUSCH coherent transmission antenna groups. This achieves optimal PTRS transmission performance by fully utilizing the available power while meeting the UE's PA capabilities when the number of PUSCH antenna ports is greater than four.

The following is a further explanation of the PTRS transmission power determination method provided by each of the above embodiments through specific examples: Example 4: Tables 1 to 3 are three possible ways to indicate the power ratio of PTRS to PUSCH. Table 1 is the indication table 1 of the power ratio of PTRS to PUSCH, Table 2 is the indication table 2 of the power ratio of PTRS to PUSCH, and Table 3 is the indication table 3 of the power ratio of PTRS to PUSCH. The details are as follows: Table 1 Indication table 1 of the power ratio of PTRS to PUSCH: Power ratio of PTRS and PUSCH Number of PUSCH layers ( L ) 1 2 3 4 All situations Fully coherent Partially coherent and incoherent, and not codebook based Fully coherent Partial coherence Unrelated and non-codebook based Fully coherent Partial coherence Unrelated and non-codebook based 00 0 3 3 Q _p -3 4.77 Y 3 Q _p -3 6 Y 3 Q _p -3 01 0 3 3 4.77 4.77 4.77 6 6 6 10 11 Power ratio of PTRS and PUSCH Number of PUSCH layers ( L ) 5 6 7 Fully coherent Partial coherence Unrelated and non-codebook based Fully coherent Partial coherence Unrelated and non-codebook based Fully coherent Partial coherence Unrelated and non-codebook based 00 7 Y 3 Q _p -3 7.78 Y 3 Q _p -3 8.45 Y 3 Q _p -3 01 7 7 7 7.78 7.78 7.78 8.45 8.45 8.45 10 11 Power ratio of PTRS and PUSCH Number of PUSCH layers ( L ) 8 Fully coherent Partial coherence Unrelated and non-codebook based 00 9 Y 3 Q _p -3 01 9 9 9 10 11 Table 2 Indication of the power ratio of PTRS to PUSCH Table 2: Power ratio of PTRS and PUSCH Number of PUSCH layers ( L ) 1 2 3 4 All situations Fully coherent Partially coherent and incoherent, and not codebook based Fully coherent Partially coherent and incoherent, and not codebook based Fully coherent Partial coherence Unrelated and non-codebook based 00 0 3 3 Q _p -3 4.77 3 Q _p -3 6 3 Q _p 3 Q _p -3 01 0 3 3 4.77 4.77 6 6 6 10 11 Power ratio of PTRS and PUSCH Number of PUSCH layers ( L ) 5 6 7 Fully coherent Partial coherence Unrelated and non-codebook based Fully coherent Partial coherence Unrelated and non-codebook based Fully coherent Partial coherence Unrelated and non-codebook based 00 7 3 Q _p 3 Q _p -3 7.78 1.77+3 Q _p 3 Q _p -3 8.45 1.77+3 Q _p 3 Q _p -3 01 7 7 7 7.78 7.78 7.78 8.45 8.45 8.45 10 11 Power ratio of PTRS and PUSCH Number of PUSCH layers ( L ) 8 Fully coherent Partial coherence Unrelated and non-codebook based 00 9 3 Q _p +3 3 Q _p -3 01 9 9 9 10 11 Table 3 Indication of the power ratio of PTRS to PUSCH Table 3: Power ratio of PTRS and PUSCH Number of PUSCH layers ( L ) 1 2 3 4 All situations Fully coherent Partially coherent and incoherent, and not codebook based Fully coherent Partially coherent and incoherent, and not codebook based Fully coherent Partial coherence Unrelated and non-codebook based 00 0 3 3 Q _p -3 3 Q _p -3 3 Q _p -3 6 3 Q _p -3 3 Q _p -3 01 0 3 3 4.77 4.77 6 6 6 10 11 Power ratio of PTRS and PUSCH Number of PUSCH layers ( L ) 5 6 7 Fully coherent Partial coherence Unrelated and non-codebook based Fully coherent Partial coherence Unrelated and non-codebook based Fully coherent Partial coherence Unrelated and non-codebook based 00 7 3 Q _p -3 3 Q _p -3 7.78 3 Q _p -3 3 Q _p -3 8.45 3 Q _p -3 3 Q _p -3 01 7 7 7 7.78 7.78 7.78 8.45 8.45 8.45 10 11 Power ratio of PTRS and PUSCH Number of PUSCH layers ( L ) 8 Fully coherent Partial coherence Unrelated and non-codebook based 00 9 3 Q _p -3 3 Q _p -3 01 9 9 9 10 11 Among them, Y is a possible value of the power ratio of PTRS to PUSCH, and Y= .

Example 5: For the increase of PTRS transmission power, when the parameter used to indicate the power ratio of PTRS to PUSCH (e.g., the high-layer parameter ptrs -Power ) is "01", the transmission power of the PTRS port can be borrowed from all other layers, that is, when the number of PUSCH layers is L , the power ratio α of PTRS to PUSCH is dB.

When the parameter indicating the power ratio of PTRS to PUSCH is "00", the power ratio of PTRS to PUSCH may be determined according to at least one of the following: 1. For non-codebook based PUSCH transmission: The value of α is dB (3 if more than two PTRS ports are considered) 3dB). This is because for non-codebook-based PUSCH transmission, whether two PUSCH layers sharing the same PTRS port use the same PA(s) for transmission depends on the UE implementation, and the base station (gNB) is unaware of this. Therefore, the gNB should not assume that the PTRS port can borrow power from other PUSCH layers sharing the same PTRS port, but can only borrow power from the muted resource elements (REs) generated by the transmission of other PTRS ports. 2. For fully coherent PUSCH transmission: When the number of PUSCH layers is L , the α value of the PTRS port is dB. This is because for fully coherent PUSCH transmission, all PUSCH layers share the same PA and the same PTRS port. The UE can borrow transmission power from all other PUSCH layers. The fully coherent PUSCH transmission can be understood as PUSCH transmission precoded using a fully coherent precoding matrix (i.e., the fully coherent transmission precoding matrix indicates the PUSCH transmission corresponding to the TPMI). One understanding of the fully coherent precoding matrix is that among the layers corresponding to the fully coherent precoding matrix, at least one layer is transmitted with non-zero power on all antenna ports. The antenna port is a PUSCH port and/or an SRS port; 3. For incoherent PUSCH transmission: The value of α is dB (3 if more than two PTRS ports are considered) 3dB). This is because for non-coherent PUSCH transmission, different PUSCH layers will use different PAs for transmission. The UE cannot borrow power from PUSCH layers sharing the same PTRS port, but can only borrow power from weakened REs due to transmissions on other PTRS ports. This non-coherent PUSCH transmission can be understood as PUSCH transmission precoded using a non-coherent precoding matrix (i.e., the non-coherent transmission precoding matrix indicates the PUSCH transmission corresponding to the TPMI). One understanding of the non-coherent precoding matrix is that any layer in the layer corresponding to the non-coherent precoding matrix is a layer that transmits with non-zero power on only one antenna port. The antenna port is a PUSCH port and/or an SRS port; 4. For partially coherent PUSCH transmission: When the number of PUSCH layers is L , the α value of the PTRS port is dB, where The number of PUSCH layers where the antenna port transmitting with non-zero power shares the same non-zero power antenna port as the PUSCH layer associated with PTRS (i.e., the PUSCH layer indicated by the "PTRS-DMRS association " field, or based on a predefined PUSCH layer). For the UL 8Tx partially coherent precoding matrix, any two PUSCH layers can share the same non-zero power antenna port, or they can share no non-zero power antenna ports. The four coherently transmitting antenna ports can be divided into two groups, each associated with a PUSCH layer. This means that PTRS can borrow power from PUSCH layers that share the same non-zero power antenna port as the PTRS-associated PUSCH layer, as well as the power of resource elements (REs) weakened by transmissions from other PTRS ports. However, PTRS cannot borrow power from a different PUSCH layer corresponding to an antenna port that transmits a PUSCH layer associated with the PTRS port at non-zero power, regardless of whether the two antenna ports transmitting non-zero power for the PUSCH layers are in the same or different coherence groups. This is because different antenna ports are assumed to use different PAs. Partially coherent PUSCH transmission can be understood as PUSCH transmission precoded using a partially coherent precoding matrix (i.e., the partially coherent transmission precoding matrix indicates the PUSCH transmission corresponding to the TPMI). One understanding of the partially coherent precoding matrix is that any layer in the layer corresponding to the partially coherent precoding matrix is transmitted at non-zero power only on some antenna ports, and at least one layer is transmitted at non-zero power on multiple antenna ports. The antenna port is a PUSCH port and/or an SRS port. Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers and the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers.

Example 6: For the increase of PTRS transmission power, when the parameter used to indicate the power ratio of PTRS to PUSCH (e.g., the high-layer parameter ptrs -Power ) is "01", the transmission power of the PTRS port can be borrowed from all other layers, that is, when the number of PUSCH layers is L , the power ratio α of PTRS to PUSCH is dB.

When the parameter indicating the power ratio of PTRS to PUSCH is "00", the power ratio α of PTRS to PUSCH may be determined according to at least one of the following: 1. For non-codebook based PUSCH transmission: The value of α is dB; or, when the number of PUSCH transmission layers is 1, the value of α is 0dB; when the number of PUSCH transmission layers is greater than 1, the value of α is dB; 2. For fully coherent PUSCH transmission: When the number of PUSCH layers is L , the α value of the PTRS port is dB. The fully coherent PUSCH transmission can be understood as PUSCH transmission precoded using a fully coherent precoding matrix (i.e., the fully coherent transmission precoding matrix indicates the PUSCH transmission corresponding to the TPMI). One understanding of the fully coherent precoding matrix is that in the layers corresponding to the fully coherent precoding matrix, at least one layer is transmitted with non-zero power on all antenna ports. The antenna port is the PUSCH port and/or the SRS port; 3. For incoherent PUSCH transmission: The value of α is dB or, when the number of PUSCH transmission layers is 1, the value of α is 0dB, when the number of PUSCH transmission layers is greater than 1, the value of α is dB. The non-coherent PUSCH transmission can be understood as the PUSCH transmission precoded by the non-coherent precoding matrix (i.e., the non-coherent transmission precoding matrix indicates the PUSCH transmission corresponding to the TPMI). One understanding of the non-coherent precoding matrix is: in the layer corresponding to the non-coherent precoding matrix, any layer is a layer that transmits with non-zero power on only one antenna port. The antenna port is the PUSCH port and/or the SRS port; 4. For partially coherent PUSCH transmission: when the number of PUSCH layers is L , the α value of the PTRS port is dB, where The number of PUSCH layers in a non-zero-power antenna port that transmits with non-zero power and a PTRS-associated PUSCH layer (i.e., the PUSCH layer indicated by the "PTRS-DMRS association " field, or based on a predefined PUSCH layer) is the same. Partially coherent PUSCH transmission can be understood as PUSCH transmission precoded using a partially coherent precoding matrix (i.e., the partially coherent transmission precoding matrix indicates the PUSCH transmission corresponding to the TPMI). One understanding of the partially coherent precoding matrix is that, within the layers corresponding to the partially coherent precoding matrix, any layer is transmitted with non-zero power only on some antenna ports, and at least one layer is transmitted with non-zero power on multiple antenna ports. The antenna port is a PUSCH port and/or an SRS port.

in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers (or the total number of layers).

FIG2 is a second flow chart of a method for determining PTRS transmission power provided by an embodiment of the present invention. As shown in FIG2 , an embodiment of the present invention provides a method for determining PTRS transmission power, which can be performed by a terminal, such as a mobile phone. The method for determining PTRS transmission power includes: Step 201: Determining a PTRS-to-PUSCH power ratio based on second information; the second information includes one or more of the following: the number of PTRS ports associated with PUSCH transmission; the number of PTRS ports configured by the network device for the terminal; or the number of PUSCH layers; The PTRS-to-PUSCH power ratio includes one or more of the following: ; ; ; ; ; ; 7; 7.78; 8.45; or 9; of which, represents the number of PTRS ports associated with PUSCH transmission, or the number of PTRS ports configured by the network device for the terminal; L represents the number of PUSCH layers associated with the PTRS; Step 202: Determine the transmission power of the PTRS based on the power ratio of the PTRS to the PUSCH.

Specifically, the PTRS transmission power determination method provided in the embodiment of the present invention can refer to the above-mentioned PTRS transmission power determination method embodiment in which the execution subject is the terminal, and can achieve the same technical effect. The parts of this embodiment that are the same as the above-mentioned corresponding method embodiment and the beneficial effects are not described in detail here.

FIG3 is a second flow chart of the PTRS transmission power indication method provided by an embodiment of the present invention. As shown in FIG3 , the embodiment of the present invention provides a PTRS transmission power indication method, the execution subject of which can be a network device, such as a base station. The PTRS transmission power determination method includes: Step 301: Determining a method for determining the PTRS to PUSCH power ratio; Step 302: Sending information indicating the method for determining the PTRS to PUSCH power ratio to a terminal; The method for determining the PTRS to PUSCH power ratio includes: Determining the PTRS to PUSCH power ratio based on first information; The first information includes one or more of the following: The number of PUSCH layers associated with the PTRS sharing a common antenna port or antenna port group; The number of PUSCH layers sharing a common antenna port; The codebook subset corresponding to PUSCH transmission; or A parameter indicating the codebook subset corresponding to PUSCH transmission.

In some embodiments, when the first information includes a codebook subset corresponding to PUSCH transmission, determining the PTRS to PUSCH power ratio based on the first information includes: Determining a precoding matrix and/or the number of PUSCH layers; Determining the PTRS to PUSCH power ratio based on the first information and the precoding matrix and/or the number of PUSCH layers.

In some embodiments, the power ratio of the PTRS to the PUSCH determined based on the first information may be in one or more of the following forms: ; ; ; ; ; ; ;or ; in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the PUSCH of PTRS.

The information indicating how the power ratio between PTRS and PUSCH is determined is provided by the higher-layer parameter ptrs - PowerIndication.

In some embodiments, the PUSCH layer that shares an antenna port or antenna port group with the PUSCH layer associated with the PTRS includes one or more of the following: A PUSCH layer that uses some of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer that uses all of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer in which all of the antenna ports that transmit at non-zero power are antenna ports in the PUSCH layer associated with the PTRS that transmit at non-zero power; A PUSCH layer that uses the same antenna port as the antenna port in the PUSCH layer associated with the PTRS that transmits at non-zero power for non-zero power transmission; At least one antenna port among the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power; or An antenna port that is in the same antenna port group as the antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power.

In some embodiments, the antenna port set is a coherent antenna port set, and/or the antenna port set includes one or more of the following: a default antenna port set; an antenna port set determined by the UE; or an antenna port set indicated by a network device.

In some embodiments, the PUSCH layers of the shared antenna port include one or more of the following: PUSCH layers sharing the same antenna port; or PUSCH layers sharing the same group of antenna ports.

In some embodiments, the PUSCH layers sharing the same antenna port include one or more of the following: PUSCH layers using the same antenna port for non-zero power transmission; PUSCH layers containing antenna ports for non-zero power transmission; or PUSCH layers overlapping antenna ports for non-zero power transmission.

In some embodiments, the PUSCH layers sharing the same antenna port group include: PUSCH layers using antenna ports in the same antenna port group for non-zero power transmission.

In some embodiments, the antenna terminals in the same antenna port group, and/or the antenna ports in the same antenna port group, include one or more of the following: a default antenna port; an antenna port determined by the UE; or an antenna port indicated by a network device.

In some embodiments, the PUSCH layers sharing the same antenna port share a power amplifier PA.

In some embodiments, the PUSCH transmission associated with the PTRS includes multiple PUSCH layers sharing a common antenna port; the number of PUSCH layers sharing the common antenna port includes one or more of the following information: The minimum number of PUSCH layers sharing the same antenna port; or The minimum number of PUSCH layers sharing the same group of antenna ports.

In some embodiments, the parameter indicating the codebook subset corresponding to the PUSCH transmission includes a parameter indicating the PUSCH coherent transmission antenna group.

Specifically, the PTRS transmission power indication method provided in the embodiment of the present invention can refer to the above-mentioned PTRS transmission power determination method embodiment in which the execution subject is the terminal, and can achieve the same technical effect. The parts of this embodiment that are the same as the above-mentioned corresponding method embodiment and the beneficial effects are not described in detail here.

Figure 4 is a schematic diagram of the structure of a terminal provided by an embodiment of the present invention. As shown in Figure 4, the terminal includes a memory 403, a transceiver 401, and a processor 402, wherein: The memory 403 is used to store computer programs; the transceiver 401 is used to transmit and receive data under the control of the processor 402; the processor 402 is used to read the computer program in the memory 403 and perform the following operations: Determine the power ratio between the PTRS and the physical uplink shared channel (PUSCH) based on first information; the first information includes one or more of the following information: The number of PUSCH layers of the antenna port or antenna port group shared by the PUSCH layer associated with the PTRS; The number of PUSCH layers of the shared antenna port; The codebook subset corresponding to PUSCH transmission; or A parameter indicating the codebook subset corresponding to PUSCH transmission; Determining the PTRS transmission power based on the PTRS to PUSCH power ratio.

The processor 402 is further configured to read the computer program in the memory 403 and perform the following operations: determining a PTRS to PUSCH power ratio based on second information; the second information comprising one or more of the following information: the number of PTRS ports associated with PUSCH transmission; the number of PTRS ports configured by the network device for the terminal; or the number of PUSCH layers; the PTRS to PUSCH power ratio comprising one or more of the following information: ; ; ; ; ; ; 7; 7.78; 8.45; or 9; of which, Indicates the number of PTRS ports associated with PUSCH transmission, or the number of PTRS ports configured by the network device for the terminal; L indicates the number of PUSCH layers associated with the PTRS; The transmission power of the PTRS is determined based on the power ratio of the PTRS to the PUSCH.

Specifically, the transceiver 401 is used to receive and send data under the control of the processor 402.

In FIG4 , the bus architecture may include any number of interconnected buses and bridges, specifically connecting together various circuits of one or more processors represented by processor 402 and memory represented by memory 403. The bus architecture may also connect together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be further described in the present invention. The bus interface provides an interface. The transceiver 401 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, or the like. For different user devices, the user interface 404 can also be an interface that can connect to external or internal devices. The connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

The processor 402 is responsible for managing the bus architecture and general processing, and the memory 403 can store data used by the processor 402 when executing operations.

In some embodiments, the processor 402 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also employ a multi-core architecture.

The processor calls the computer program stored in the memory to execute any of the methods provided by the embodiments of the present invention according to the obtained executable instructions. The processor and the memory can also be physically separated.

In some embodiments, when the first information includes a codebook subset corresponding to PUSCH transmission, determining the PTRS to PUSCH power ratio based on the first information includes: Determining a precoding matrix and/or the number of PUSCH layers; Determining the PTRS to PUSCH power ratio based on the first information and the precoding matrix and/or the number of PUSCH layers.

In some embodiments, the power ratio of the PTRS to the PUSCH determined based on the first information may be in one or more of the following forms: ; ; ; ; ; ; ;or ; in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the PUSCH of PTRS.

In some embodiments, the PUSCH layer that shares an antenna port or antenna port group with the PUSCH layer associated with the PTRS includes one or more of the following: A PUSCH layer that uses some of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer that uses all of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer in which all of the antenna ports that transmit at non-zero power are antenna ports in the PUSCH layer associated with the PTRS that transmit at non-zero power; A PUSCH layer that uses the same antenna port as the antenna port in the PUSCH layer associated with the PTRS that transmits at non-zero power for non-zero power transmission; At least one antenna port among the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power; or An antenna port that is in the same antenna port group as the antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power.

In some embodiments, the antenna port set is a coherent antenna port set, and/or the antenna port set includes one or more of the following: a default antenna port set; an antenna port set determined by the UE; or an antenna port set indicated by a network device.

In some embodiments, the PUSCH layers of the shared antenna port include one or more of the following: PUSCH layers sharing the same antenna port; or PUSCH layers sharing the same group of antenna ports.

In some embodiments, the PUSCH layers sharing the same antenna port include one or more of the following: PUSCH layers using the same antenna port for non-zero power transmission; PUSCH layers containing antenna ports for non-zero power transmission; or PUSCH layers overlapping antenna ports for non-zero power transmission.

In some embodiments, the PUSCH layers sharing the same antenna port group include: PUSCH layers using antenna ports in the same antenna port group for non-zero power transmission.

In some embodiments, the antenna ports in the same antenna port group transmit coherently, and/or the antenna ports in the same antenna port group include one or more of the following: a default antenna port; an antenna port determined by the UE; or an antenna port indicated by a network device.

In some embodiments, the PUSCH layers sharing the same antenna port share a power amplifier PA.

In some embodiments, the number of PUSCH layers for the shared antenna port includes one or more of the following information: The minimum number of PUSCH layers for the same antenna port; or The minimum number of PUSCH layers for the same group of antenna ports.

In some embodiments, the parameter indicating the codebook subset corresponding to the PUSCH transmission includes a parameter indicating the PUSCH coherent transmission antenna group.

It should be noted that the above-mentioned terminal provided in the embodiment of the present invention can implement all the method steps implemented in the method embodiment with the above-mentioned execution subject as the terminal, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be described in detail here.

Figure 5 is a schematic diagram of the structure of a network device provided by an embodiment of the present invention. As shown in Figure 5, the network device includes a memory 503, a transceiver 501, and a processor 502, wherein: The memory 503 is used to store computer programs; the transceiver 501 is used to transmit and receive data under the control of the processor 502; the processor 502 is used to read the computer program in the memory 503 and perform the following operations: Determine a method for determining the power ratio of PTRS to PUSCH; Send information indicating the method for determining the power ratio of PTRS to PUSCH to a terminal; wherein the method for determining the power ratio of PTRS to PUSCH includes: Determine the power ratio of PTRS to PUSCH based on first information; the first information includes one or more of the following information: The number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group; The number of PUSCH layers that share the same antenna port; The codebook subset corresponding to the PUSCH transmission; or A parameter indicating the codebook subset corresponding to the PUSCH transmission.

Specifically, the transceiver 501 is used to receive and send data under the control of the processor 502.

In FIG5 , the bus architecture may include any number of interconnected buses and bridges, specifically connecting various circuits of one or more processors represented by processor 502 and memory represented by memory 503. The bus architecture may also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further in the present invention. The bus interface provides an interface. The transceiver 501 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, or the like. The processor 502 is responsible for managing the bus architecture and general processing, and the memory 503 can store data used by the processor 502 when executing operations.

Processor 502 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also employ a multi-core architecture.

In some embodiments, when the first information includes a codebook subset corresponding to PUSCH transmission, determining the PTRS to PUSCH power ratio based on the first information includes: Determining a precoding matrix and/or the number of PUSCH layers; Determining the PTRS to PUSCH power ratio based on the first information and the precoding matrix and/or the number of PUSCH layers.

In some embodiments, the power ratio of the PTRS to the PUSCH determined based on the first information may be in one or more of the following forms: ; ; ; ; ; ; ;or ; in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the PUSCH of PTRS.

In some embodiments, the PUSCH layer that shares an antenna port or antenna port group with the PUSCH layer associated with the PTRS includes one or more of the following: A PUSCH layer that uses some of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer that uses all of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer in which all of the antenna ports that transmit at non-zero power are antenna ports in the PUSCH layer associated with the PTRS that transmit at non-zero power; A PUSCH layer that uses the same antenna port as the antenna port in the PUSCH layer associated with the PTRS that transmits at non-zero power for non-zero power transmission; At least one antenna port among the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power; or An antenna port that is in the same antenna port group as the antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power.

In some embodiments, the antenna port set is a coherent antenna port set, and/or the antenna port set includes one or more of the following: a default antenna port set; an antenna port set determined by the UE; or an antenna port set indicated by a network device.

In some embodiments, the PUSCH layers of the shared antenna port include one or more of the following: PUSCH layers sharing the same antenna port; or PUSCH layers sharing the same group of antenna ports.

In some embodiments, the PUSCH layers sharing the same antenna port include one or more of the following: PUSCH layers using the same antenna port for non-zero power transmission; PUSCH layers containing antenna ports for non-zero power transmission; or PUSCH layers overlapping antenna ports for non-zero power transmission.

In some embodiments, the PUSCH layers sharing the same antenna port group include: PUSCH layers using antenna ports in the same antenna port group for non-zero power transmission.

In some embodiments, the antenna terminals in the same antenna port group, and/or the antenna ports in the same antenna port group, include one or more of the following: a default antenna port; an antenna port determined by the UE; or an antenna port indicated by a network device.

In some embodiments, the PUSCH layers sharing the same antenna port share a power amplifier PA.

In some embodiments, the PUSCH transmission associated with the PTRS includes multiple PUSCH layers sharing a common antenna port; the number of PUSCH layers sharing the common antenna port includes one or more of the following information: The minimum number of PUSCH layers sharing the same antenna port; or The minimum number of PUSCH layers sharing the same group of antenna ports.

In some embodiments, the parameter indicating the codebook subset corresponding to the PUSCH transmission includes a parameter indicating the PUSCH coherent transmission antenna group.

Specifically, the above-mentioned network device provided by the embodiment of the present invention can implement all the method steps implemented by the above-mentioned method embodiment in which the execution subject is the network device, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be described in detail here.

Figure 6 is a schematic diagram of a PTRS transmission power determination apparatus according to an embodiment of the present invention. As shown in Figure 6 , the apparatus includes a first determination module 601 and a second determination module 602. The first determination module 601 is configured to determine a power ratio between the PTRS and a physical uplink shared channel (PUSCH) based on first information. The first information includes one or more of the following: The number of PUSCH layers associated with the PTRS sharing a common antenna port or antenna port group; The number of PUSCH layers in a shared antenna port; The codebook subset corresponding to PUSCH transmission; or A parameter indicating the codebook subset corresponding to PUSCH transmission. The second determination module 602 is configured to determine the PTRS transmission power based on the PTRS-PUSCH power ratio.

In some embodiments, when the first information includes a codebook subset corresponding to PUSCH transmission, the first determination module includes: a sixth determination module for determining a precoding matrix and/or the number of PUSCH layers; a seventh determination module for determining a PTRS-to-PUSCH power ratio based on the first information, the precoding matrix, and/or the number of PUSCH layers.

In some embodiments, the power ratio of the PTRS to the PUSCH determined based on the first information may be in one or more of the following forms: ; ; ; ; ; ; ;or ; in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the PUSCH of PTRS.

In some embodiments, the PUSCH layer that shares an antenna port or antenna port group with the PUSCH layer associated with the PTRS includes one or more of the following: A PUSCH layer that uses some of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer that uses all of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer in which all of the antenna ports that transmit at non-zero power are antenna ports in the PUSCH layer associated with the PTRS that transmit at non-zero power; A PUSCH layer that uses the same antenna port as the antenna port in the PUSCH layer associated with the PTRS that transmits at non-zero power for non-zero power transmission; At least one antenna port among the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power; or An antenna port that is in the same antenna port group as the antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power.

In some embodiments, the antenna port set is a coherent antenna port set, and/or the antenna port set includes one or more of the following: a default antenna port set; an antenna port set determined by the UE; or an antenna port set indicated by a network device.

In some embodiments, the PUSCH layers of the shared antenna port include one or more of the following: PUSCH layers sharing the same antenna port; or PUSCH layers sharing the same group of antenna ports.

In some embodiments, the PUSCH layers sharing the same antenna port include one or more of the following: PUSCH layers using the same antenna port for non-zero power transmission; PUSCH layers containing antenna ports for non-zero power transmission; or PUSCH layers overlapping antenna ports for non-zero power transmission.

In some embodiments, the PUSCH layers sharing the same antenna port group include: PUSCH layers using antenna ports in the same antenna port group for non-zero power transmission.

In some embodiments, the antenna ports in the same antenna port group transmit coherently, and/or the antenna ports in the same antenna port group include one or more of the following: a default antenna port; an antenna port determined by the UE; or an antenna port indicated by a network device.

In some embodiments, the PUSCH layers sharing the same antenna port share a power amplifier PA.

In some embodiments, the number of PUSCH layers for the shared antenna port includes one or more of the following information: The minimum number of PUSCH layers for the same antenna port; or The minimum number of PUSCH layers for the same group of antenna ports.

In some embodiments, the parameter indicating the codebook subset corresponding to the PUSCH transmission includes a parameter indicating the PUSCH coherent transmission antenna group.

Specifically, the PTRS transmission power determination device provided in the embodiment of the present invention can implement all the method steps implemented in the method embodiment in which the execution subject is the terminal, and can achieve the same technical effects. The parts of this embodiment that are the same as the method embodiment and the beneficial effects are not described in detail here.

FIG7 is a schematic diagram of a structure of a PTRS transmission power determination apparatus provided by an embodiment of the present invention. As shown in FIG7 , an embodiment of the present invention provides a PTRS transmission power determination apparatus, comprising a third determination module 701 and a fourth determination module 702, wherein: the third determination module 701 is configured to determine a PTRS to PUSCH power ratio based on second information; the second information includes one or more of the following: the number of PTRS ports associated with PUSCH transmission; the number of PTRS ports configured by a network device for a terminal; or the number of PUSCH layers; the PTRS to PUSCH power ratio includes one or more of the following: ; ; ; ; ; ; 7; 7.78; 8.45; or 9; of which, represents the number of PTRS ports associated with PUSCH transmission, or the number of PTRS ports configured by the network device for the terminal; L represents the number of PUSCH layers associated with the PTRS; the fourth determination module 702 is used to determine the transmission power of the PTRS based on the power ratio of the PTRS to the PUSCH.

Specifically, the PTRS transmission power determination device provided in the embodiment of the present invention can implement all the method steps implemented in the method embodiment in which the execution subject is the terminal, and can achieve the same technical effects. The parts of this embodiment that are the same as the method embodiment and the beneficial effects are not described in detail here.

FIG8 is a second structural diagram of a PTRS transmission power indication device provided by an embodiment of the present invention. As shown in FIG8 , the embodiment of the present invention provides a PTRS transmission power indication device, including a fifth determination module 801 and a sending module 802.

The fifth determining module 801 is configured to determine a power ratio between PTRS and PUSCH.

The transmitting module 802 is configured to transmit information indicating a method for determining a PTRS-to-PUSCH power ratio to a terminal. The method for determining the PTRS-to-PUSCH power ratio includes: Determining the PTRS-to-PUSCH power ratio based on first information; the first information includes one or more of the following: The number of PUSCH layers in a shared antenna port or antenna port group associated with the PUSCH layer associated with the PTRS; The number of PUSCH layers in a shared antenna port; The codebook subset corresponding to PUSCH transmission; or A parameter indicating the codebook subset corresponding to PUSCH transmission.

In some embodiments, when the first information includes a codebook subset corresponding to PUSCH transmission, determining the PTRS to PUSCH power ratio based on the first information includes: Determining a precoding matrix and/or the number of PUSCH layers; Determining the PTRS to PUSCH power ratio based on the first information and the precoding matrix and/or the number of PUSCH layers.

In some embodiments, the power ratio of the PTRS to the PUSCH determined based on the first information may be in one or more of the following forms: ; ; ; ; ; ; ;or ; in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the PUSCH of PTRS.

In some embodiments, the PUSCH layer that shares an antenna port or antenna port group with the PUSCH layer associated with the PTRS includes one or more of the following: A PUSCH layer that uses some of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer that uses all of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer in which all of the antenna ports that transmit at non-zero power are antenna ports in the PUSCH layer associated with the PTRS that transmit at non-zero power; A PUSCH layer that uses the same antenna port as the antenna port in the PUSCH layer associated with the PTRS that transmits at non-zero power for non-zero power transmission; At least one antenna port among the antenna ports that transmit the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power; or An antenna port that is in the same antenna port group as the antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power is used to transmit the PUSCH layer at non-zero power.

In some embodiments, the antenna port set is a coherent antenna port set, and/or the antenna port set includes one or more of the following: a default antenna port set; an antenna port set determined by the UE; or an antenna port set indicated by a network device.

In some embodiments, the PUSCH layers of the shared antenna port include one or more of the following: PUSCH layers sharing the same antenna port; or PUSCH layers sharing the same group of antenna ports.

In some embodiments, the PUSCH layers sharing the same antenna port include one or more of the following: PUSCH layers using the same antenna port for non-zero power transmission; PUSCH layers containing antenna ports for non-zero power transmission; or PUSCH layers overlapping antenna ports for non-zero power transmission.

In some embodiments, the PUSCH layers sharing the same antenna port group include: PUSCH layers using antenna ports in the same antenna port group for non-zero power transmission.

In some embodiments, the antenna terminals in the same antenna port group, and/or the antenna ports in the same antenna port group, include one or more of the following: a default antenna port; an antenna port determined by the UE; or an antenna port indicated by a network device.

In some embodiments, the PUSCH layers sharing the same antenna port share a power amplifier PA.

In some embodiments, the PUSCH transmission associated with the PTRS includes multiple PUSCH layers sharing a common antenna port; the number of PUSCH layers sharing the common antenna port includes one or more of the following information: The minimum number of PUSCH layers sharing the same antenna port; or The minimum number of PUSCH layers sharing the same group of antenna ports.

In some embodiments, the parameter indicating the codebook subset corresponding to the PUSCH transmission includes a parameter indicating the PUSCH coherent transmission antenna group.

Specifically, the PTRS transmission power indication device provided in the embodiment of the present invention can implement all the method steps implemented in the method embodiment in which the execution subject is a network device, and can achieve the same technical effects. The parts of this embodiment that are the same as the method embodiment and the beneficial effects are not described in detail here.

It should be noted that the division of units/modules in the above-described embodiments of the present invention is illustrative and merely represents a logical functional division. In actual implementation, other divisions are possible. Furthermore, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist as a separate entity, or two or more units may be integrated into a single unit. These integrated units may be implemented as either hardware or software functional units.

If this integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the existing technology, or all or part of the technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage media include: USB flash drives, mobile hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks or optical disks, and other media that can store program code.

In some embodiments, a computer-readable storage medium is also provided. The computer-readable storage medium stores a computer program. The computer program is used to enable a computer to execute the PTRS transmission power determination method provided by the above-mentioned method embodiments.

Specifically, the computer-readable storage medium provided in the embodiments of the present invention can implement all the method steps implemented in the aforementioned method embodiments and achieve the same technical effects. The parts of this embodiment that are identical to the method embodiments and the beneficial effects thereof will not be detailed here. It should be noted that the computer-readable storage medium can be any available medium or data storage device accessible by the processor, including but not limited to magnetic memory (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, NAND flash memories, solid-state drives (SSDs)).

It should also be noted that the terms "first," "second," etc., used in the embodiments of the present invention are used to distinguish similar objects, and are not intended to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present invention can be implemented in an order other than that illustrated or described herein. Furthermore, the terms "first" and "second" generally distinguish objects of the same type and do not limit the number of objects. For example, the first object can be one or more.

In the present invention, the term "and/or" describes the relationship between related objects, indicating that three possible relationships exist. For example, "A and/or B" can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the related objects are in an "or" relationship.

In the embodiments of the present invention, the term "plurality" refers to two or more, and other quantifiers are similar.

The technical solutions provided by the embodiments of the present invention can be applied to a variety of systems, particularly 5G systems. For example, applicable systems may include global system of mobile communication (GSM) systems, code division multiple access (CDMA) systems, wideband code division multiple access (WCDMA) general packet radio service (GPRS) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, long term evolution advanced (LTE-A) systems, universal mobile telecommunication systems (UMTS), worldwide interoperability for microwave access (WiMAX) systems, and 5G New Radio (NR) systems. These various systems include both terminal devices and network equipment. They may also include core network components, such as the Evolved Packet System (EPS), 5G System (5GS), and 6G System (6GS).

The terminal devices involved in the embodiments of the present invention may refer to devices that provide voice and/or data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to wireless modems. The names of terminal devices may vary in different systems. For example, in 5G systems, terminal devices may be called user equipment (UE). Wireless terminal devices can communicate with one or more core networks (CNs) via a radio access network (RAN). Wireless terminal devices may be mobile terminal devices, such as mobile phones (also known as "cellular" phones) and computers with mobile terminal devices. For example, these may be portable, pocket-sized, handheld, built-in computer devices, or in-vehicle mobile devices that exchange voice and/or data with the radio access network. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). Wireless terminal devices may also be referred to as systems, subscriber units, subscriber stations, mobile stations, mobile stations, remote stations, access points, remote terminals, access terminals, user terminals, user agents, and user devices, but are not limited to these terms in the present invention.

The network device involved in the embodiments of the present invention may be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, a base station may also be referred to as an access point, or may be a device in an access network that communicates with wireless terminal devices on the air interface via one or more magnetic sectors, or by other names. The network device may be configured to convert received air frames into and out of Internet Protocol (IP) packets, acting as a router between the wireless terminal devices and the rest of the access network, which may include an Internet Protocol (IP) communications network. The network device may also coordinate the management of air interface attributes. For example, the network equipment related to the embodiments of the present invention can be a network equipment (Base Transceiver Station, BTS) in the Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), or a network equipment (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolved network equipment (eNB or e-NodeB) in the long term evolution (LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (HeNB), a relay node, a femto, a pico, etc., but the embodiments of the present invention are not limited thereto. In some network architectures, network devices may include centralized unit (CU) nodes and distributed unit (DU) nodes. The centralized unit and distributed unit may also be geographically separated.

In the present invention, "determine B based on A" means that factor A is considered when determining B. This is not limited to "determine B based solely on A" and should also include: "determine B based on A and C," "determine B based on A, C, and E," "determine C based on A, and further determine B based on C," and so on. It can also include using A as a condition for determining B, for example, "When A meets the first condition, determine B using the first method," "When A meets the second condition, determine B," and "When A meets the third condition, determine B based on the first parameter." Of course, it can also include conditions that factor in determining B, for example, "When A meets the first condition, determine C using the first method, and further determine B based on C."

Network devices and end devices can each use one or more antennas for Multiple Input Multiple Output (MIMO) transmission. MIMO transmission can be either Single User MIMO (SU-MIMO) or Multiple User MIMO (MU-MIMO). Depending on the configuration and number of antennas, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or Massive-MIMO. It can also employ diversity transmission, precoding, or beamforming.

Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk memory and optical memory) containing computer-usable program code.

The present invention is described with reference to flowcharts and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and/or block in the flowcharts and/or block diagrams, as well as combinations of processes and/or blocks in the flowcharts and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, such that the instructions, when executed by the processor of the computer or other programmable data processing device, generate a device for implementing the functions specified in one or more processes in the flowcharts and/or one or more blocks in the block diagrams.

These processors may execute instructions that are also stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce an article of manufacture including an instruction device that implements the functions specified in one or more processes in the flowchart and/or one or more blocks in the block diagram.

These processors can also execute instructions that are loaded onto a computer or other programmable data processing device, causing a series of operation steps to be executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and/or one or more blocks in the block diagram.

Obviously, a person skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the patent application of the present invention and its equivalents, the present invention is intended to include such modifications and variations.

401: Transceiver 402: Processor 403: Memory 404: User Interface 501: Transceiver 502: Processor 503: Memory 601: First Determination Module 602: Second Determination Module 701: Third Determination Module 702: Fourth Determination Module 801: Fifth Determination Module 802: Transmitter 101-201: Steps 201-202: Steps 301-302: Steps

Figure 1 is a flowchart of a method for determining PTRS transmission power according to an embodiment of the present invention; Figure 2 is a flowchart of a method for determining PTRS transmission power according to an embodiment of the present invention; Figure 3 is a flowchart of a method for indicating PTRS transmission power according to an embodiment of the present invention; Figure 4 is a schematic diagram of the structure of a terminal according to an embodiment of the present invention; Figure 5 is a schematic diagram of the structure of a network device according to an embodiment of the present invention; Figure 6 is a schematic diagram of a structure of a PTRS transmission power determination apparatus according to an embodiment of the present invention; Figure 7 is a schematic diagram of a structure of a PTRS transmission power determination apparatus according to an embodiment of the present invention; Figure 8 is a schematic diagram of a structure of a PTRS transmission power determination apparatus according to an embodiment of the present invention.

101-102: Steps

Claims (31)

A method for determining the transmission power of a phase tracking reference signal (PTRS), applied to a terminal, comprises: determining a power ratio between the PTRS and a physical uplink shared channel (PUSCH) based on first information; the first information comprising one or more of the following: the number of PUSCH layers of a common antenna port or antenna port group associated with the PUSCH layer associated with the PTRS; the number of PUSCH layers of a common antenna port; a codebook subset corresponding to PUSCH transmission; or a parameter indicating the codebook subset corresponding to PUSCH transmission; and determining the transmission power of the PTRS based on the power ratio between the PTRS and the PUSCH. The power ratio between the PTRS and the PUSCH determined based on the first information may be in one or more of the following forms: ; ; ; ; ; ; ;or ; in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers. The method for determining PTRS transmission power as described in claim 1, wherein, when the first information includes a codebook subset corresponding to PUSCH transmission, determining the PTRS to PUSCH power ratio based on the first information comprises: Determining a precoding matrix and/or the number of PUSCH layers; Determining the PTRS to PUSCH power ratio based on the first information and the precoding matrix and/or the number of PUSCH layers. The method for determining PTRS transmission power as claimed in claim 1, wherein determining the power ratio of PTRS to PUSCH based on the first information comprises: Determine the power ratio of PTRS to PUSCH; or, based on Determine the first value and based on Determine a second value; determine a PTRS to PUSCH power ratio based on the sum of the first value and the second value; or, calculate and The product of and The power ratio of PTRS to PUSCH is determined by multiplying Determine the first value and based on Determine the second value based on Determine a fourth value; calculate the sum of the first value and the second value; determine a PTRS to PUSCH power ratio based on a minimum value of the sum of the first value and the second value and the fourth value; or, based on and The product of determines the third value, and based on Determine a fourth value; Determine a power ratio of PTRS to PUSCH based on a minimum value between the third value and the fourth value; or, and The product of The minimum value of determines the power ratio of PTRS to PUSCH; Calculate and The product of and The product of The minimum value of determines the power ratio of PTRS to PUSCH; Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers. The method for determining PTRS transmission power as described in any one of claims 1 to 3, wherein the PUSCH layer associated with the PTRS shares an antenna port or antenna port group and includes one or more of the following: A PUSCH layer that uses some of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer that uses all of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer in which all antenna ports that transmit at non-zero power are antenna ports in the PUSCH layer associated with the PTRS that transmit at non-zero power; A PUSCH layer that is transmitted at non-zero power using the same antenna port as the antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power; A PUSCH layer that is transmitted at non-zero power using at least one antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power; or A PUSCH layer that is transmitted at non-zero power using an antenna port that is in the same antenna port group as the antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power. The PTRS transmission power determination method of claim 4, wherein the antenna port group is a coherent antenna port group, and/or the antenna port group includes one or more of the following: a default antenna port group; an antenna port group determined by the UE; or an antenna port group indicated by a network device. The PTRS transmission power determination method as described in any one of claims 1 to 3, wherein the PUSCH layers of the shared antenna port include one or more of the following: PUSCH layers sharing the same antenna port; or PUSCH layers sharing the same group of antenna ports. The PTRS transmission power determination method of claim 6, wherein the PUSCH layers sharing the same antenna port include one or more of the following: PUSCH layers using the same antenna port for non-zero power transmission; Antenna ports for non-zero power transmission are PUSCH layers that contain a related PUSCH layer; or Antenna ports for non-zero power transmission have overlapping PUSCH layers. The PTRS transmission power determination method as described in claim 6, wherein the PUSCH layer sharing the same set of antenna ports includes: a PUSCH layer using antenna ports in the same antenna port group to perform non-zero power transmission. The PTRS transmission power determination method of claim 8, wherein the antenna ports in the same antenna port group transmit coherently, and/or the antenna ports in the same antenna port group include one or more of the following: a default antenna port; an antenna port determined by the UE; or an antenna port indicated by a network device. The PTRS transmission power determination method as described in claim 6, wherein the PUSCH layers sharing the same antenna port share a power amplifier (PA). The PTRS transmission power determination method as described in any one of claims 1 to 3, wherein the number of PUSCH layers for the shared antenna port comprises one or more of the following information: The minimum number of PUSCH layers for the same antenna port; or The minimum number of PUSCH layers for the same group of antenna ports. The PTRS transmission power determination method as described in claim 1 or 2, wherein the parameter used to indicate the codebook subset corresponding to the PUSCH transmission includes a parameter used to indicate the PUSCH coherent transmission antenna group. A method for determining PTRS transmission power, applied to a terminal, comprises: determining a PTRS to PUSCH power ratio based on second information; the second information comprising one or more of the following: the number of PTRS ports associated with PUSCH transmission; the number of PTRS ports configured by a network device for the terminal; or the number of PUSCH layers; the PTRS to PUSCH power ratio comprising one or more of the following: ; ; ; ; ;or ; in, The PTRS transmission power is determined based on the PTRS to PUSCH power ratio. A PTRS transmission power indication method, applied to a network device, includes: determining a method for determining a PTRS to PUSCH power ratio; and transmitting information indicating the method for determining the PTRS to PUSCH power ratio to a terminal. The method for determining the PTRS to PUSCH power ratio includes: determining the PTRS to PUSCH power ratio based on first information; the first information includes one or more of the following: the number of PUSCH layers of a shared antenna port or antenna port group associated with the PTRS layer; the number of PUSCH layers sharing the shared antenna port; the codebook subset corresponding to PUSCH transmission; or a parameter for indicating the codebook subset corresponding to PUSCH transmission. The form of the PTRS to PUSCH power ratio determined based on the first information includes one or more of the following: ; ; ; ; ; ; ;or ; in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers. The PTRS transmission power indication method of claim 14, wherein, when the first information includes a codebook subset corresponding to PUSCH transmission, determining the PTRS to PUSCH power ratio based on the first information comprises: Determining a precoding matrix and/or the number of PUSCH layers; Determining the PTRS to PUSCH power ratio based on the first information and the precoding matrix and/or the number of PUSCH layers. The PTRS transmission power indication method as described in claim 14 or 15, wherein the PUSCH layer associated with the PTRS shares an antenna port or antenna port group and includes one or more of the following: A PUSCH layer that uses some of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer that uses all of the antenna ports in the PUSCH layer associated with the PTRS to transmit at non-zero power for non-zero power transmission; A PUSCH layer in which all antenna ports that transmit at non-zero power are antenna ports in the PUSCH layer associated with the PTRS that transmit at non-zero power; A PUSCH layer that is transmitted at non-zero power using the same antenna port as the antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power; A PUSCH layer that is transmitted at non-zero power using at least one antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power; or A PUSCH layer that is transmitted at non-zero power using an antenna port that is in the same antenna port group as the antenna port that transmits the PUSCH layer associated with the PTRS at non-zero power. The PTRS transmission power indication method of claim 16, wherein the antenna port group is a coherent antenna port group, and/or the antenna port group includes one or more of the following: a default antenna port group; an antenna port group determined by the UE; or an antenna port group indicated by a network device. The PTRS transmit power indication method of claim 14 or 15, wherein the PUSCH layers of the shared antenna port include one or more of the following: PUSCH layers sharing the same antenna port; or PUSCH layers sharing the same group of antenna ports. The PTRS transmission power indication method of claim 16, wherein the PUSCH layers sharing the same antenna port include one or more of the following: PUSCH layers using the same antenna port for non-zero power transmission; Antenna ports for non-zero power transmission include PUSCH layers that are related; or Antenna ports for non-zero power transmission include overlapping PUSCH layers. The PTRS transmission power indication method as described in claim 16, wherein the PUSCH layer sharing the same set of antenna ports includes: a PUSCH layer using antenna ports in the same antenna port group to perform non-zero power transmission. The PTRS transmission power indication method of claim 20, wherein the antenna ports in the same antenna port group transmit coherently, and/or the antenna ports in the same antenna port group include one or more of the following: a default antenna port; an antenna port determined by the UE; or an antenna port indicated by a network device. The PTRS transmission power indication method as described in claim 19, wherein the PUSCH layers sharing the same antenna port share a power amplifier (PA). The PTRS transmission power indication method of claim 14 or 15, wherein the PUSCH transmission associated with the PTRS includes multiple PUSCH layers sharing a common antenna port; the number of PUSCH layers sharing the common antenna port includes one or more of the following information: The minimum number of PUSCH layers sharing the same antenna port; or The minimum number of PUSCH layers sharing the same group of antenna ports. The PTRS transmission power indication method as described in claim 14 or 15, wherein the parameter used to indicate the codebook subset corresponding to PUSCH transmission includes a parameter used to indicate the PUSCH coherent transmission antenna group. A terminal includes a memory, a transceiver, and a processor; the memory is used to store a computer program; the transceiver is used to transmit and receive data under the control of the processor; and the processor is used to read the computer program from the memory and execute the PTRS transmission power determination method described in any one of claims 1 to 12. A terminal includes a memory, a transceiver, and a processor; the memory is used to store a computer program; the transceiver is used to transmit and receive data under the control of the processor; and the processor is used to read the computer program from the memory and execute the PTRS transmission power determination method described in claim 13. A network device comprising a memory, a transceiver, and a processor; The memory is configured to store a computer program; the transceiver is configured to transmit and receive data under the control of the processor; and the processor is configured to read the computer program from the memory and execute the PTRS transmission power indication method described in any one of claims 14 to 24. A PTRS transmission power determination apparatus includes: a first determination module configured to determine a PTRS to physical uplink shared channel (PUSCH) power ratio based on first information; the first information including one or more of the following: the number of PUSCH layers of a shared antenna port or antenna port group associated with the PUSCH layer associated with the PTRS; the number of PUSCH layers of a shared antenna port; a codebook subset corresponding to PUSCH transmission; or a parameter indicating the codebook subset corresponding to PUSCH transmission; and a second determination module configured to determine the PTRS transmission power based on the PTRS to PUSCH power ratio. The PTRS to PUSCH power ratio determined based on the first information may be in one or more of the following forms: ; ; ; ; ; ; ;or ; in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers. A PTRS transmission power determination apparatus includes: a third determination module configured to determine a PTRS to PUSCH power ratio based on second information; the second information including one or more of the following: the number of PTRS ports associated with PUSCH transmission; the number of PTRS ports configured by a network device for a terminal; or the number of PUSCH layers; the PTRS to PUSCH power ratio including one or more of the following: ; ; ; ; ;or ; in, represents the number of PTRS ports associated with PUSCH transmission; L represents the number of PUSCH layers associated with the PTRS; and a fourth determination module is configured to determine the transmission power of the PTRS based on the power ratio of the PTRS to the PUSCH. A PTRS transmission power indication device includes: a fifth determination module for determining a method for determining a PTRS-to-PUSCH power ratio; and a transmission module for transmitting information indicating the method for determining the PTRS-to-PUSCH power ratio to a terminal. The method for determining the PTRS-to-PUSCH power ratio includes: determining the PTRS-to-PUSCH power ratio based on first information; the first information includes one or more of the following: the number of PUSCH layers in a shared antenna port or antenna port group associated with the PTRS-associated PUSCH layer; the number of PUSCH layers in a shared antenna port; a codebook subset corresponding to PUSCH transmission; or a parameter for indicating the codebook subset corresponding to PUSCH transmission. The form of the PTRS-to-PUSCH power ratio determined based on the first information includes one or more of the following: ; ; ; ; ; ; ;or ; in, Indicates the number of PUSCH layers associated with the PTRS that share the same antenna port or antenna port group, or the number of PUSCH layers that share the same antenna port; Indicates the number of PTRS ports associated with PUSCH, or the number of PTRS ports configured by the network device for the terminal; Indicates the number of PUSCH layers. A computer-readable storage medium stores a computer program for causing a computer to execute the PTRS transmission power determination method described in any one of claims 1 to 13 or the PTRS transmission power indication method described in any one of claims 14 to 24.