WO2019141285A1 - Antenna selection indication method, device and system - Google Patents

Abstract

Provided are a communication method, device and system. The communication method comprises: receiving reference signal indication information, wherein the reference signal indication information indicates a first reference signal resource and/or a first reference signal resource group, the first reference signal resource has a correlation with a first antenna of a terminal device, and the first reference signal resource group has a correlation with the first antenna. In the communication method of the embodiments of the present application, a correlation between a reference signal resource and an antenna is indicated through reference signal indication information, facilitating ensuring that an antenna of a terminal device sending uplink data remains consistent with a network device scheduling the uplink data.

Description

Antenna selection indication method, device and system

The present application claims priority to Chinese Patent Application No. 201810060723.9, filed on Jan. 22, 2018, the entire disclosure of which is incorporated herein by reference. In this application.

Technical field

The present application relates to the field of wireless communications and, more particularly, to a communication method, apparatus and system.

Background technique

In the case where the capability of the terminal device is limited, the terminal device is configured with fewer antenna RF chains, and usually the channel of the transmitting antenna is smaller than the channel of the receiving antenna. Physical uplink shared channel (PUSCH) uplink antenna selection technology refers to selecting an antenna to transmit data, and the terminal device switches the antenna connected to the radio frequency circuit through a switching device, thereby transmitting data, and selecting an uplink antenna (referred to as a day) The technique utilizes the channel difference between the antennas to obtain a diversity gain.

A new generation of wireless access technologies such as 5G (New Radio Access Technology, NR) technology does not support network devices to configure PUSCH day selection functions for terminal devices (including closed-loop antenna selection and open-loop antenna selection). The channels experienced by the multiple antennas of the terminal device may be different, and the difference in channel state cannot be utilized. Therefore, how to use the difference in channel state has become an urgent problem to be solved.

Summary of the invention

The present application provides a communication method, apparatus, and system. The reference signal indication information indicates a correspondence between a reference signal resource and an antenna, so as to support the implementation of the antenna selection function, thereby utilizing the difference in channel states to improve system performance.

In a first aspect, a communication method is provided, the method includes: receiving reference signal indication information, the reference signal indication information indicating a first reference signal resource, and/or a first reference signal resource group; wherein the first The reference signal resource has a corresponding relationship with the first antenna, and the first reference signal resource group has a corresponding relationship with the first antenna.

In some possible implementation manners, the receiving reference signal indication information includes: receiving reference signal indication information from the first network device.

In some possible implementations, the reference signal includes a reference signal for uplink sounding.

Further, the reference signal is a reference signal for uplink detection.

In some possible implementation manners, the reference signal indication information is carried in the downlink control information DCI (for example, DCI carried by the downlink control channel), or the reference signal indication information is carried in the high layer signaling.

In the communication method of the embodiment of the present application, the reference signal indication information indicates the correspondence between the reference signal resource and the antenna, so as to help ensure that the antenna that the terminal device sends the uplink data and the network device consistently schedule the uplink data.

In some possible implementations, the first antenna includes one or more antennas.

With reference to the first aspect, in some possible implementation manners of the first aspect, the method further includes: transmitting uplink data to at least part of the antennas in the first antenna; or transmitting uplink by using at least part of antennas in the first antenna Data; or, controlling at least part of the antennas in the first antenna to transmit non-zero power when transmitting uplink data, or greater than or equal to a first threshold; or, by at least part of antennas in the first antenna, to non-zero The power, or one or more powers greater than or equal to the first threshold, transmits uplink data.

In some possible implementations, the transmitting the uplink data by using at least part of the antennas in the first antenna includes: sending, by using at least part of the antennas in the first antenna, uplink data to the second network device.

In some possible implementation manners, the terminal device receives the reference signal indication information from the first network device, and the terminal device sends the uplink data to the second network device, where the first network device and the second network device are the same network device. Or, the first network device and the second network device are different network devices.

In some possible implementations, the first network device and the second network device are different network devices, the first network device and the second network device are in different geographical locations, or the first network device and The second network devices are respectively independent physical devices (ie, the first network device and the second network device are not integrated in the same device).

With reference to the first aspect, in some possible implementation manners of the first aspect, the reference signal indication information includes indication information of the at least one reference signal resource group, indication information of the at least one reference signal resource, or the at least one reference signal At least one of the antenna port indication information corresponding to the resource, wherein the at least one reference signal resource group includes the first reference signal resource group, and the at least one reference signal resource includes the first reference signal resource.

In some possible implementation manners, the reference signal indication information includes indication information of the at least one reference signal resource group, the indication information of the at least one reference signal resource, or at least the antenna port indication information corresponding to the at least one reference signal resource. In the case of two kinds of indication information, the at least two indication information are indicated by joint coding, or the at least two indication information are respectively encoded by the indication.

With reference to the first aspect, in some possible implementation manners of the first aspect, the reference signal indication information is further used to indicate that the weight information of the uplink data channel is sent, where the weight information includes precoding matrix information, a precoder, At least one of spatial beamforming, or spatial transmission filter.

In some possible implementation manners, the precoding matrix refers to a weight in the form of a mathematical matrix used by the transmitting end to perform precoding processing. The set of at least one precoding rectangle may be a codebook, and the precoding matrix in the codebook may be determined by an index of the precoding matrix. The index may consist of one or more indexes. The precoding matrix information can be embodied as an index of the precoding matrix.

In some possible implementation manners, when the weight information is precoding indication information, the weight information is identified by an index of the precoding matrix.

With reference to the first aspect, in some possible implementation manners of the first aspect, the method further includes: receiving resource configuration information, where the resource configuration information includes at least one reference signal resource group, where the at least one reference signal resource group includes at least one And referring to the signal resource, the at least one reference signal resource includes a first reference signal resource.

In some possible implementations, the receiving resource configuration information includes: receiving resource configuration information from a third network device.

In some possible implementation manners, the terminal device receives reference signal indication information from the first network device, where the terminal device receives resource configuration information from the third network device, the first network device and the third The network device is the same network device, or the first network device and the third network device are different network devices.

In some possible implementation manners, the first network device and the third network device are different network devices, where the first network device and the third network device are in different geographical locations, or the first network device and The third network devices are respectively independent physical devices (ie, the first network device and the third network device are not integrated in the same device).

With reference to the first aspect, in some possible implementation manners of the first aspect, the resource configuration information is carried in the high layer signaling.

In some possible implementations, the high layer signaling may include, for example, a radio resource control message and a medium access control control element.

In conjunction with the first aspect, in some possible implementations of the first aspect, the at least one reference signal resource has a corresponding relationship with the at least one antenna.

In some possible implementations, an identifier of each reference signal resource of the at least one reference signal resource has a corresponding relationship with an identifier of each antenna of the at least one antenna.

In conjunction with the first aspect, in some possible implementation manners of the first aspect, the at least part of the at least one reference signal resource group has at least one of a reference signal switching function or an uplink transmission function.

With reference to the first aspect, in some possible implementation manners of the first aspect, the uplink transmission function is a codebook-based uplink transmission function or a non-codebook-based uplink transmission function.

In some possible implementation manners, when the uplink transmission mode is codebook-based transmission, the antenna port of the reference signal resource has a quasi-co-location relationship with the antenna port that sends the uplink data.

In some possible implementation manners, when the uplink transmission mode is non-codebook-based transmission, the (the antenna port of the reference signal resource) and the (the antenna port of the transmission uplink data) apply the same or similar spatial transmission filter.

With reference to the first aspect, in some possible implementation manners of the first aspect, the at least one reference signal resource group includes a first reference signal resource group set and a second reference signal resource group set, the first reference signal resource group set The method has a reference signal switching function, and the second reference signal resource group set has an uplink transmission function, and the first reference signal resource group set is associated with the second reference signal resource group set.

The communication method of the embodiment of the present application, by establishing an association relationship between reference signal resource groups, enables the network device to receive the reference signal transmitted on the specific antenna, and indicates the antenna for uplink data transmission by referring to the signal indication information, with a view to It helps to use the reference signal to achieve the effect of controlling the antenna for uplink data transmission, reducing the complexity and overhead of the configuration.

With reference to the first aspect, in some possible implementation manners of the first aspect, the at least part of the at least one reference signal resource group has an antenna selection function of uplink data; or, the at least one reference signal resource At least part of the reference signal resource has an antenna selection function for uplink data.

The communication method of the embodiment of the present application helps the network device determine the scheduling information by using the reference signal resource for the antenna selection of the uplink data, so that the transmission of the reference signal and the channel experienced by the transmission of the uplink data are consistent. The scheduling information may include at least one of modulation coding information, code block size information, weight information, and the like.

In a second aspect, a communication method is provided, the method includes: transmitting reference signal indication information, the reference signal indication information indicating a first reference signal resource, and/or a first reference resource group; wherein the first reference resource The group has a corresponding relationship with the first antenna, and the first reference signal resource group has a corresponding relationship with the first antenna.

In some possible implementations, the first antenna includes one or more antennas.

In some possible implementation manners, the sending reference signal indication information includes: the first network device sends the reference signal indication information.

In some possible implementations, the reference signal includes a reference signal for uplink sounding.

Further, the reference signal is a reference signal for uplink detection.

In some possible implementation manners, the reference signal indication information is carried in the downlink control information DCI, or the reference signal indication information is carried in the high layer signaling.

With reference to the second aspect, in some possible implementation manners of the second aspect, the method further includes: receiving uplink data, where the uplink data is from at least part of the antennas in the first antenna.

In some possible implementations, the receiving the uplink data includes: receiving, by the second network device, uplink data from the terminal device.

In some possible implementation manners, the first network device sends the reference signal indication information, the second network device receives the uplink data, the first network device and the second network device are the same network device, or the first network device And the second network device is a different network device.

In some possible implementations, the first network device and the second network device are different network devices, the first network device and the second network device are in different geographical locations, or the first network device and The second network devices are respectively independent physical devices (ie, the first network device and the second network device are not integrated in the same device).

With reference to the second aspect, in some possible implementation manners of the second aspect, the reference signal indication information includes indication information of the at least one reference signal resource group, indication information of the at least one reference signal resource, or the at least one reference signal At least one of the antenna port indication information corresponding to the resource, wherein the at least one reference signal resource group includes the first reference signal resource group, and the at least one reference signal resource includes the first reference signal resource.

With reference to the second aspect, in some possible implementation manners of the second aspect, the reference signal indication information is further used to indicate that the weight information of the uplink data channel is sent, where the weight information includes precoding matrix information, a precoder, At least one of spatial beamforming, or spatial transmission filter.

With reference to the second aspect, in some possible implementation manners of the second aspect, the method further includes: sending resource configuration information, where the resource configuration information includes at least one reference signal resource group, where the at least one reference signal resource group includes at least one And referring to the signal resource, the at least one reference signal resource group includes the first reference signal resource group, and the at least one reference signal resource includes the first reference signal resource.

In some possible implementation manners, the sending resource configuration information includes: the third network device sends the resource configuration information.

In some possible implementation manners, the first network device sends the reference signal indication information, and the third network device sends the resource configuration information, where the first network device and the third network device are the same network device, or the first network The device and the third network device are different network devices.

In some possible implementation manners, the first network device and the third network device are different network devices, where the first network device and the third network device are in different geographical locations, or the first network device and The third network devices are respectively independent physical devices (ie, the first network device and the third network device are not integrated in the same device).

With reference to the second aspect, in some possible implementation manners of the second aspect, the resource configuration information is carried in the high layer signaling.

In some possible implementations, the higher layer signaling may include a radio resource control message and a medium access control control element.

With reference to the second aspect, in some possible implementation manners of the second aspect, the at least one reference signal resource has a corresponding relationship with the at least one antenna.

With reference to the second aspect, in some possible implementation manners of the second aspect, the at least part of the at least one reference signal resource group has at least one of a reference signal switching function or an uplink transmission function.

With reference to the second aspect, in some possible implementation manners of the second aspect, the uplink transmission function is a codebook-based uplink transmission function or a non-codebook-based uplink transmission function.

In some possible implementation manners, when the uplink transmission mode is codebook-based transmission, the antenna port of the reference signal resource has a quasi-co-location relationship with the antenna port that sends the uplink data.

In some possible implementation manners, when the uplink transmission mode is non-codebook-based transmission, the (the antenna port of the reference signal resource) and the (the antenna port of the transmission uplink data) apply the same or similar spatial transmission filter.

With reference to the second aspect, in some possible implementation manners of the second aspect, the at least one reference signal resource group includes a first reference signal resource group set and a second reference signal resource group set, the first reference signal resource group set The method has a reference signal switching function, and the second reference signal resource group set has an uplink transmission function, and the first reference signal resource group set is associated with the second reference signal resource group set.

With reference to the second aspect, in some possible implementation manners of the second aspect, the at least part of the reference signal resource group of the at least one reference signal resource group has an antenna selection function of uplink data; or, the at least one reference signal resource At least part of the reference signal resource has an antenna selection function for uplink data.

In a third aspect, an apparatus is provided. The apparatus provided by the present application has a function of realizing the behavior of a terminal device or a network device in the above method aspect, and includes means for performing the steps or functions described in the above method aspects. The steps or functions may be implemented by software, or by hardware (such as a circuit), or by a combination of hardware and software.

In one possible design, the above apparatus includes one or more processors and communication units. The one or more processors are configured to support the apparatus to perform the corresponding functions of the terminal device in the above method. For example, uplink data is transmitted to the network device according to the reference signal indication information. The communication unit is configured to support the device to communicate with other devices to implement receiving and/or transmitting functions. For example, the reference signal indication information is received.

Optionally, the apparatus may further comprise one or more memories for coupling with the processor, which store program instructions and/or data necessary for the device. The one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.

The device may be a smart terminal or a wearable device or the like, and the communication unit may be a transceiver or a transceiver circuit. Optionally, the transceiver may also be an input/output circuit or an interface.

The device can also be a communication chip. The communication unit may be an input/output circuit or interface of a communication chip.

In another possible design, the above apparatus includes a transceiver, a processor, and a memory. The processor is for controlling a transceiver or an input/output circuit for transmitting and receiving signals, the memory for storing a computer program for executing a computer program in the memory, such that the device performs either of the first aspect or the first aspect A possible implementation of the method in which the terminal device is completed.

In one possible design, the above apparatus includes one or more processors and communication units. The one or more processors are configured to support the apparatus to perform the respective functions of the network device in the above method. For example, a reference signal indication information is generated. The communication unit is configured to support the device to communicate with other devices to implement receiving and/or transmitting functions. For example, the reference signal indication information is transmitted.

Optionally, the apparatus may further comprise one or more memories for coupling with the processor, which store program instructions and/or data necessary for the network device. The one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.

The device may be a base station, a gNB or a TRP, etc., and the communication unit may be a transceiver, or a transceiver circuit. Optionally, the transceiver may also be an input/output circuit or an interface.

The device can also be a communication chip. The communication unit may be an input/output circuit or interface of a communication chip.

In another possible design, the above apparatus includes a transceiver, a processor, and a memory. The processor is for controlling a transceiver or input/output circuit for transmitting and receiving signals, the memory for storing a computer program for executing a computer program in the memory, such that the device performs any of the second aspect or the second aspect The method of implementing the network device in the implementation mode.

In a fourth aspect, a system is provided, the system comprising the above terminal device and a network device.

A fifth aspect, a computer readable storage medium for storing a computer program, the computer program comprising instructions for performing the method of the first aspect or any of the possible implementations of the first aspect.

In a sixth aspect, a computer readable storage medium is provided for storing a computer program, the computer program comprising instructions for performing the method of any of the possible implementations of the second aspect or the second aspect.

In a seventh aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code is run on a computer, causing the computer to perform any of the first aspect or the first aspect described above Possible methods in the implementation.

In an eighth aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code is run on a computer, causing the computer to perform any of the second aspect and the second aspect Possible methods in the implementation.

DRAWINGS

1 is a schematic diagram of a communication system suitable for the communication method of the embodiment of the present application.

FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application.

3 is a schematic diagram of a transmitting antenna and a receiving antenna inside a terminal device.

FIG. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

FIG. 5 is a schematic structural diagram of a network device according to an embodiment of the present application.

FIG. 6 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application.

Detailed ways

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical solution of the embodiment of the present application can be applied to various communication systems, such as a long term evolution (LTE) system, a worldwide interoperability for microwave access (WiMAX) communication system, and a fifth generation in the future. (5th Generation, 5G) systems, such as new radio access technology (NR), and future communication systems, such as 6G systems.

The application will present various aspects, embodiments, or features in a system that can include multiple devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. In addition, a combination of these schemes can also be used.

In addition, in the embodiments of the present application, the word "exemplary" is used to mean an example, an illustration, or a description. Any embodiment or design described as "example" in this application should not be construed as preferred or advantageous over other embodiments or designs. Rather, the term use examples is intended to present concepts in a concrete manner.

In the embodiment of the present application, information, signal, message, and channel may sometimes be mixed. It should be noted that the meaning to be expressed is consistent when the difference is not emphasized. "of", "corresponding (relevant)" and "corresponding" can sometimes be mixed. It should be noted that the meaning to be expressed is consistent when the distinction is not emphasized.

In the embodiment of the present application, sometimes the subscript such as W1 may be a non-subscript form such as W1, and the meaning to be expressed is consistent when the difference is not emphasized.

The network architecture and the service scenario described in the embodiments of the present application are for the purpose of more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation of the technical solutions provided by the embodiments of the present application. The technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

The embodiment of the present application can be applied to a time division duplex (TDD) scenario or a frequency division duplex (FDD) scenario.

The embodiments of the present application can be applied to a traditional typical network or to a UE-centric network in the future. The UE-centric network introduces a non-cell network architecture, that is, deploys a large number of small stations in a specific area to form a hyper cell, and each station is a transmission point of the Hyper cell ( Transmission Point, TP) or TRP, and connected to a centralized controller. When the UE moves within the Hyper cell, the network side device selects a new sub-cluster (sub-cluster) for the UE to serve, thereby avoiding true cell handover and achieving continuity of the UE service. The network side device includes a wireless network device. Or, in a UE-centric network, multiple network-side devices, such as small stations, may have independent controllers, such as distributed controllers, and each small station can independently schedule users, and the small stations are in the long-term. There is interaction information so that there is some flexibility in providing collaborative services for the UE.

In the embodiment of the present application, different base stations may be base stations with different identifiers, or may be base stations deployed in different geographical locations with the same identifier. The base station, or the baseband chip, should support the method provided by the embodiment of the present application before deployment, because the base station does not know whether it will involve the scenario applied by the embodiment of the present application before the base station is deployed. It can be understood that the foregoing base station with different identifiers may be a base station identifier, or may be a cell identifier or other identifier.

The scenario in the embodiment of the present application is described by taking the scenario of the NR network in the wireless communication network as an example. It should be noted that the solution in the embodiment of the present application may also be applied to other wireless communication networks, and the corresponding names may also be used in other scenarios. The name of the corresponding function in the wireless communication network is replaced.

For ease of understanding the embodiments of the present application, the communication system applicable to the embodiment of the present application is first described in detail by taking the communication system shown in FIG. 1 as an example. FIG. 1 shows a schematic diagram of a communication system suitable for the communication method of the embodiment of the present application. As shown in FIG. 1, the communication system 100 includes a network device 102 and a terminal device 106. The network device 102 can be configured with multiple antennas, and the terminal device can also be configured with multiple antennas. Optionally, the communication system may also include a network device 104, which may also be configured with multiple antennas.

It should be understood that network device 102 or network device 104 may also include multiple components (eg, processors, modulators, multiplexers, demodulators or demultiplexers, etc.) associated with signal transmission and reception.

The network device is a device with a wireless transceiver function or a chip that can be disposed on the device, and the device includes, but is not limited to, an evolved Node B (eNB) and a radio network controller (RNC). Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband Baseband unit (BBU), access point (AP) in wireless fidelity (WIFI) system, wireless relay node, wireless backhaul node, transmission point (TRP) Transmission point, TP), etc., can also be 5G, such as NR, gNB in the system, or transmission point (TRP or TP), one or a group of base stations (including multiple antenna panels) in the 5G system Or, it may be a network node constituting a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (DU), or the like.

In some deployments, the gNB may include a centralized unit (CU) and a DU. The gNB may also include a radio unit (RU). The CU implements some functions of the gNB, and the DU implements some functions of the gNB. For example, the CU implements radio resource control (RRC), the function of the packet data convergence protocol (PDCP) layer, and the DU implements the wireless chain. The functions of the radio link control (RLC), the media access control (MAC), and the physical (PHY) layer. Since the information of the RRC layer eventually becomes information of the PHY layer or is transformed by the information of the PHY layer, high-level signaling, such as RRC layer signaling or PHCP layer signaling, can also be used in this architecture. It is considered to be sent by the DU or sent by the DU+RU. It can be understood that the network device can be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into network devices in the access network RAN, and the CU may be divided into network devices in the core network CN, which is not limited herein.

A terminal device may also be called a user equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, and a user. Agent or user device. The terminal device in the embodiment of the present application may be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) terminal device, and an augmented reality (AR) terminal. Equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation security ( A wireless terminal in a transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like. The embodiment of the present application does not limit the application scenario. In the present application, a terminal device having a wireless transceiving function and a chip that can be disposed in the terminal device are collectively referred to as a terminal device.

In the communication system 100, both the network device 102 and the network device 104 can communicate with a plurality of terminal devices, such as the terminal device 106 shown in the figures. Network device 102 and network device 104 can communicate with one or more terminal devices similar to terminal device 106. It should be understood, however, that the terminal device in communication with the network device 102 and the terminal device in communication with the network device 104 may be the same or different. The terminal device 106 shown in FIG. 1 can simultaneously communicate with the network device 102 and the network device 104, but this only shows one possible scenario, in some scenarios, the terminal device may only be associated with the network device 102 or the network device 104 communication, this application does not limit this.

It should be understood that FIG. 1 is merely a simplified schematic diagram for ease of understanding. The communication system may also include other network devices or may also include other terminal devices, which are not shown in FIG.

With the development of multi-antenna technology, network devices and terminal devices may be configured with multiple transmit antennas and receive antennas, respectively. Some terminal devices may support fewer transmit antennas than receive antennas, for example, 1T2R (ie, one transmit antenna, two receive antennas), or 2T4R (ie, two transmit antennas, four receive antennas), or aTbR (a<b), etc. Taking 1T2R as an example, this can be understood as follows: the terminal device can only use one antenna to transmit uplink signals/channels at the same time, and can simultaneously use two antennas for downlink signal/channel reception. Therefore, when it is required to obtain channel state information (CSI) CSI of the downlink channel through channel reciprocity, the terminal device may need to transmit a reference signal for channel sounding through different antennas at different times, such as detection. Sounding reference signal (SRS). This approach can be referred to as antenna switching, or antenna selection. The units of time in different times may be referred to as slots, mini slots, symbols (for example, orthogonal frequency division multiplexing (OFDM)), subframes, frames. The system frame, the radio frame, and the like may also be a time window composed of multiple frames or subframes, such as a system information (SI) window.

Before introducing the embodiment of the present application, the related concepts in several NRs are briefly introduced first.

Antenna port: includes a channel for uplink data transmission (referred to as an uplink data channel), such as an antenna port of a physical uplink shared channel PUSCH, a reference signal for demodulation (referred to as a demodulation reference signal), such as a demodulation reference signal ( Demodulation reference signal (DMRS), an antenna port, a reference signal for channel sounding (referred to as a channel sounding reference signal), such as at least one of a sounding reference signal (SRS), an antenna port, etc. An antenna port used to carry a specific physical channel, and/or physical signal. Signals transmitted through the same antenna port, whether or not these signals are transmitted through the same or different physical antennas, the channels corresponding to the paths they experience in spatial transmission can be considered the same or related (such as large-scale channel characteristics, such as channels). Matrix H, the same), that is, the signals transmitted at the same antenna port, the receiving end can consider its channel to be the same or related when demodulating. The antenna port is a logical meaning. Typically, the signal receiving end identifies signals having different transmission channels through the antenna port.

Antenna: Also known as a user antenna, or a user antenna port, or a user port, etc., may also be referred to as a transmitting antenna or a receiving antenna. The antenna can have a corresponding relationship with the feed port of the antenna. A transmit antenna refers to an antenna port associated with a physical transmit antenna. Generally, a physical antenna refers to an array of physical antennas. The antenna is also identified by a port, but is different from the antenna port that carries the physical channel. The transmit antenna is a physical meaning. It can be associated with a logical port or not. The different antennas can be distinguished by different identifiers or indexes.

In general, the mapping relationship between logical antennas and physical antennas is an implementation problem. One or more physical antennas can be weighted to form a logical antenna. The mapping between the logical port and the transmitting antenna element unit of the user may also be a problem for the user. The user may number the transmitting antenna element unit and map the logical port field to the antenna element unit.

The reference signal includes an uplink reference signal and a downlink reference signal. The uplink reference signal is at least one of a reference signal for uplink channel measurement and a reference signal for demodulation. The reference signal used for uplink channel measurement may be a channel sounding signal SRS, or other reference signals having an uplink channel measurement function. The downlink reference signal includes a reference signal for demodulation, a channel state measurement signal, and the like.

Channel Sounding Reference Signal (SRS) resource group: may contain at least one SRS resource. The SRS resource group can be distinguished by the identifier of the SRS resource group. One or more SRS resources may be configured in one SRS resource group, and the configuration of one SRS resource may include an identifier of the SRS resource. One or more SRS resources configured in one SRS resource group may be distinguished by an SRS resource identifier. The identifier of the SRS resource in the SRS resource group may be numbered in one SRS resource group (that is, the SRS resource identifier may be the same in different SRS resource groups, and the SRS resource identifier is specific to each SRS resource group. The SRS resources indicated by the SRS resources having the same identifier in the multiple SRS resource groups are different, or are numbered for one terminal device (that is, the SRS resource identifiers may be different in different SRS resource groups, or The SRS resources indicated by the SRS resources having the same identifier in the multiple SRS resource groups are the same, or are numbered within the cell (that is, the resource numbers of the SRSs may be shared for different terminal devices in one cell, and different The SRS resources of the same SRS identifier of the terminal device are the same). For an SRS resource group, you can configure its purpose. This use can be considered to be related to transmission characteristics. Optional uses include: beam management, antenna switching, codebook-based uplink transmission, non-codebook-based uplink transmission, codebook-based uplink selection (antenna selection). Transmission, non-codebook based uplink selection transmission, etc.

The beam management means that when the SRS resource group is configured for the function, at least one of the transmit beams of the at least two SRS resources in the SRS resource group or the receive beam is different.

The antenna switching means that when the SRS resource group is configured for the function, the SRS transmitting antennas of at least two SRS resources in the SRS resource group are not completely the same. The time units (eg, symbols) occupied by at least two SRS resources corresponding to different transmit antennas within the SRS resource group shall allow different transmit antennas to be used. When the terminal device supports simultaneous SRS transmission in the LTE system and the NR system, the relationship between the transmission time unit and the transmitting antenna is defined in the LTE system. Therefore, allowing symbols using different transmitting antennas means that the preset transmitting antennas corresponding to the plurality of symbols are different. The preset transmit antennas corresponding to the plurality of symbols are different. Exemplarily, the time slot identifiers of the multiple symbols are different, or the identifiers of the time slots in which the multiple symbols are located are different, or the identifiers of the time slots in which the multiple symbols are located are different from each other, or The identification of the time slot in which the plurality of symbols are located is different from the result of the function value of the other parameters. The identifier of the time slot may also be replaced by the identifier of the subframe and the value of the function of the time slot. Wherein, the value of the function of the time slot may be an output when the time slot and the frame structure parameter are input as a function. For example, the ratio of the time slot to 2 ^u is a function of a time slot, where u is a frame. Structural parameters.

The codebook-based uplink transmission means that when the SRS resource group is configured for the function, the SRS resource group can be used to indicate precoding matrix information in the codebook.

The non-codebook-based uplink transmission means that when the SRS resource group is configured for the function, the SRS resource group may be used to indicate weight information of at least one of a precoder, a spatial transmission filter, and the like. .

The codebook-based uplink selection (antenna selection) transmission means that when the SRS resource group is configured for the function, the SRS resource group can be used to indicate an antenna, and precoding matrix information in the codebook. .

The non-codebook-based uplink-scheduled transmission means that when the SRS resource group is configured for the function, the SRS resource group may be used to indicate at least one of an antenna, and a precoder or a spatial transmission filter. The weight information of the item.

Further, in general, the terminal device does not expect to receive the number of different antenna ports configured for each SRS resource in one SRS resource group, or the terminal device does not expect to receive each SRS in one SRS resource group. The resource is configured with different bandwidth sizes.

The SRS resource occupies a portion of the time-frequency resource. In the time domain, SRS resources occupy at least one symbol. In the frequency domain, the SRS resource occupies at least one subcarrier. Illustratively, the SRS resource occupies at least four resource blocks (RBs), and one resource block is composed of multiple subcarriers. At least one symbol occupied by the SRS resource may be continuous or discontinuous. At least one symbol occupied by the SRS resource may be within one time slot or within multiple time slots. In a case where at least one symbol occupied by the SRS resource is in multiple time slots, the multiple time slots may be consecutive time slots, and when the adjacent time slots of the multiple time slots are marked with a small time The last symbol available for SRS transmission of the slot is associated with the first SRS resource that identifies the first slot available for SRS transmission. Exemplarily, the SRS resource may occupy at least one symbol of the reciprocal of the slot numbered m and at least one symbol numbered from 0 of the slot numbered m+1.

The symbols that can be used for SRS transmission can be at least the last six symbols of one time slot, or can be any one of the SRS symbols.

The SRS resource group can occupy one or more time slots. For example, the SRS resource group can occupy a plurality of consecutive time slots. The SRS resource group occupies a plurality of consecutive time slots, and the SRS resource group occupies a continuous plurality of time slots. Illustratively, the last one of the plurality of time slots identifies the last one of the smaller time slots available for SRS transmission and the first one of the larger time slots that is available for SRS transmission The SRS resource group. Illustratively, the resource group may occupy at least one symbol of the inverse of the time slot numbered m and at least one symbol numbered from 0 of the time slot numbered m+1. The symbol occupied by the SRS resource group includes a symbol for SRS resource transmission included in the SRS resource group, and a symbol for antenna switching between SRS resources included in the SRS resource group. For the symbol used for antenna switching between the SRS resources included in the SRS resource group, the terminal device does not perform uplink transmission. Exemplarily, the SRS resource group association uses the antenna switching for 1T4R when the antenna is switched, and the SRS resource group includes four SRS resources, and each SRS resource is single-port transmission, and three SRS resources occupy The sixth, fourth, and second symbols of the smaller time slot are identified in the adjacent time slots, and the other one of the SRS resources occupying the larger time slot in the adjacent time slot is available for SRS resource transmission. symbol. The first symbol available for SRS resource transmission may be a symbol with a symbol identification of 0 or 8.

Number of antenna ports of the physical uplink shared channel: in the codebook-based transmission (including when there is no day-selection and when there is a day-selection), it may be determined according to the number of SRS antenna ports configured by the indicated SRS resources; The transmission of the codebook (including when there is no day selection and when there is a day) may be determined according to the number of SRS resources in the indicated SRS resource group, or according to the total number of SRS resources in the configured SRS resource group. The number is determined.

Weight information: In the multi-antenna technology, multiple antennas (both logical and physical) can be weighted. By this weight, the transmitted or received signal has a certain energy distribution characteristic in space, such as reflecting energy. Aggregation in partial direction. The directivity effect of the signal obtained by such weight adjustment can also be referred to as precoding and beam-formability.

In general, the digital weight information operating at the baseband can be identified by means of a precoding matrix, a precoder, or the like. The weight formed by the phase adjustment of the phase shifter connected to the physical antenna can be considered as an analog weight, which can also be called a spatial transmission filter. In general, digital weights and analog weights can be used in combination, such as applying a digital weight matrix to a baseband and applying an analog weight matrix to a radio frequency. Therefore, there is no strict technical distinction for precoding matrices, precoders, spatial transmission filters, and the like.

In addition, this weight is combined with the antenna and/or antenna port application in a functional manner, for example, the function can be multiply, meaning that the weight as a matrix can be multiplied by the signal on the antenna and/or antenna port. For example, when the weight is a precoding matrix, the precoding matrix may be multiplied by a vector formed by the data stream carried by the DMRS antenna port to achieve precoding of the data stream to reduce inter-stream interference and improve system gain. . Or, for example, by adjusting the phase of the phase shifter to which the antenna is connected, an analog weight is formed on the transmitted signal, which is mathematically also an effect of multiplying weighting on the physical antenna.

When the weight information refers to the precoding matrix information, the terminal device acquires the uplink pre-matrix matrix information, where the network device configures one or more SRS resources for the terminal device, and configures the corresponding number of antenna ports for the SRS resource. For example, 1, 2, 4, indicating how many antenna ports are used for the SRS resource to transmit. Optionally, the antenna port of the SRS resource is an antenna port corresponding to the number of the corresponding configured antenna ports from the lowest bit of the selectable SRS antenna port. For example, when the number of SRS resource antenna ports is 4, the SRS may be selected. The lowest bit of the antenna port is 3000, and the antenna port of the SRS resource is 3000, 3001, 3002, 3003. Optionally, specific SRS antenna port information, such as antenna ports 3000 and 3003, may be included in the SRS resource configuration information. For example, when the number of SRS resource antenna ports is 4, and the lowest antenna port of the SRS is 1000, the antenna ports of the SRS resources are 1000, 1001, 1002, and 1003. Optionally, specific SRS antenna port information, such as antenna ports 1000 and 1003, may be included in the SRS resource configuration information. The network device indicates the SRS resource in the downlink control information (DCI), and the terminal device obtains the number of the SRS antenna ports of the indicated SRS resource according to the SRS resource indication, and determines the number of the antenna ports of the PUSCH. Generally, in codebook based transmission, the number of antenna ports of the PUSCH is equal to the number of SRS antenna ports of the indicated SRS resources. The number of antenna ports has a corresponding relationship with the precoding indication information field. The terminal device determines the indicated precoding matrix according to the number of antenna ports and the precoding information and number of layers in the DCI. Specifically, the terminal device determines which table to look up according to the number of ports, and determines which precoding matrix (index) in the table is used according to the value of the precoding indication information field of the DCI, thereby determining the corresponding precoding matrix. And, the rank of the uplink is also indicated in the precoding moment indication information field. The uplink rank reflects the number of independent data streams of the uplink data, which is related to the antenna correlation of the channel. The higher the antenna correlation of the channel, the smaller the rank. On the contrary, the lower the antenna correlation of the channel, the higher the rank.

Further, the precoding information and number of layers in the DCI are used to indicate the precoding matrix information and the uplink transport layer (that is, the rank).

When the weight information refers to a precoder or a spatial transmission filter or the like, the terminal device acquisition is a process in which the terminal device can transmit at least one SRS resource according to the configuration of the network device, where one SRS resource corresponds to one weight. The information (ie, the SRS resource and the weight information have a correspondence relationship), each SRS resource may be including one SRS antenna port, and the SRS resource is sent by using the weight information. After the network device receives the at least one SRS resource, the network device may perform the measurement, and the network device schedules the SRS resource that the network device considers to be good for the terminal device, and the network device indicates the SRS resource indication information to the terminal device, where the indication information may pass through the upper layer. Signaling or physical layer signaling bearers, such as by DCI bearers. The terminal device performs weighting (or precoding, beamforming, etc.) operation on the PUSCH according to the SRS resource indication indicated by the network device, using the weight information corresponding to the SRS resource.

The relationship between the weight information and the logical antenna and the physical antenna: on different physical antennas, the same logical antenna may be corresponding, but the channels of the different physical antennas may be different, so the suitable weight information measured by the network device may be different. Therefore, it can be considered that the weight information indicated by the network device and the network device indicate that the transmitting antenna of the terminal device has a corresponding relationship. The network device may measure the weight information corresponding to the uplink transmission data based on the channel experienced by the uplink sounding signal, and the channel of the uplink sounding signal sent by different antennas may have different channels, so the network device may measure different physical antennas. Determine different weight information. Weight information, such as precoding matrices, is usually weighted by logical antennas. Precoders, spatial transmission filters, etc. are weighted to the antenna, and/or to the logical antenna.

Use of SRS resources (groups): The use of SRS resources (groups) has a correspondence with the transmission characteristics of SRS resources (groups). For example, when configured for beam management, at least two resources in the SRS resource group may use different transmit beams (ie, different spatial transmission filters) or different receive beams (ie, different receive spaces). Filtering, or receiving non-quasi-co-location; when the configuration is SRS antenna switching, at least two resources in the SRS resource group are switched and sent on different antennas.

A quasi co-location (QCL) relationship between two antenna ports means that the channel large-scale parameter of one antenna port can be inferred by the large-scale parameter of the channel obtained by another antenna port ( Infer). Large-scale parameters may include average gain, average delay, delay spread, Doppler shift, Doppler spread, spatial parameters ( One or more of the spatial parameter, or spatial Rx parameters.

Wherein, the spatial parameters may include an angle of arrival (AOA), a dominant AoA, an average AoA, an angle of departure (AOD), a channel correlation matrix, and an angle of arrival power. Angle spread spectrum, average departure angle (average AoD), power angle spread spectrum of departure angle, transmit channel correlation, receive channel correlation, transmit beamforming, receive beamforming, spatial channel correlation, spatial filter, or space One or more of filtering parameters, or spatial receiving parameters, or weight information.

The frame structure parameter (numerology) can be associated with a subcarrier spacing and/or a cyclic prefix (CP) type. The CP type can also be referred to as CP length, or simply CP. The CP type may be an extended CP or a normal (ordinary) CP. The next time slot of the extended CP may include 12 time domain symbols, and the next time slot of the normal CP may include 14 time domain symbols. The time domain symbol can be simply referred to as a symbol. The time domain symbol may be an orthogonal frequency division multiplexing (OFDM) symbol, or may be a discrete fourier transform spread orthogonal frequency division multiplexing (DFT-s- OFDM) symbol.

The embodiments of the present application are described in detail below with reference to the accompanying drawings.

It should be understood that the technical solution of the present application can be applied to a wireless communication system, for example, the communication system 100 shown in FIG. 1, the communication system may include at least one network device and at least one terminal device, and the network device and the terminal device may pass Wireless air interface communication. For example, the network device in the communication system may correspond to the network device 102 and the network device 106 shown in FIG. 1, and the terminal device may correspond to the terminal device 104 shown in FIG.

It should be understood that, in the embodiment of the present application, the technical solution is introduced by using the PUSCH as an example for the sake of understanding. However, the present invention is not limited to the present application. The method provided by the embodiment of the present application is not only applicable to the transmission of the PUSCH. It can also be applied to the transmission of other uplink data channels/signals. In addition, the present application also does not limit the reference signal used for channel measurement, and the reference signal may be a demodulation reference signal, a phase noise reference signal, or other reference signals for implementing the same or similar functions.

In the following, the embodiment of the present application is described in detail by taking an interaction process between a terminal device and a network device as an example. The terminal device may be a terminal device that has a wireless connection relationship with the network device in the wireless communication system. It can be understood that the network device can transmit the reference signal based on the same technical solution with a plurality of terminal devices having a wireless connection relationship in the wireless communication system. This application does not limit this.

FIG. 2 is a schematic flowchart of a communication method 200 provided by an embodiment of the present application, which is shown from the perspective of device interaction. As shown in FIG. 2, the method 200 can include:

S210, the network device sends reference signal indication information to the terminal device, where the terminal device receives the reference signal indication information sent by the network device, where the reference signal indication information is used to indicate the first reference signal resource, and/or, first And a reference signal resource group, wherein the first reference signal resource has a corresponding relationship with the first antenna of the terminal device, and the first reference signal resource group has a corresponding relationship with the first antenna.

In the present application, the correspondence relationship may be embodied by one or more of a table, a character string, a formula, or a function, and is not limited herein.

Specifically, the network device schedules uplink data, and may send reference signal indication information to the terminal device, where the reference signal indication information includes a first reference signal resource, and/or a first reference signal resource group, the first reference signal resource Corresponding to the first antenna, the first reference signal resource group has a corresponding relationship with the first antenna.

The communication method of the embodiment of the present application indicates the correspondence between the reference signal resource and the antenna through the reference signal indication information, so as to support the implementation of the antenna selection function, and further utilize the difference of the channel state to improve the performance of the system.

Optionally, the first reference signal resource is an SRS resource, and the first reference signal resource group is an SRS resource group.

The SRS resource can be understood as a resource for transmitting a sounding reference signal. By way of example and not limitation, the SRS resource may include at least one of the following: a resource identifier, a frequency domain resource, a time domain resource, a code domain resource, and an air domain resource, and the code domain resource may include at least one of the following: sequence, cyclic shift (cycling) Shift), Orthogonal Cover Code (OCC). The airspace resource may include at least one of an antenna port, weight information, and the like.

It should be understood that the first antenna may be one or more antennas.

It should also be understood that the first antenna of the embodiment of the present application may also be referred to as a first antenna group, and the first antenna group includes one or more antennas.

Optionally, the network device may perform channel measurement, and the network device may determine the reference signal indication information according to a result of the channel measurement, where the reference signal indication information includes a first reference signal resource, and/or a first reference signal resource group.

Optionally, the reference signal indication information may also be used to indicate antenna port information (such as the number of antenna ports) for transmitting uplink data.

Optionally, the reference signal indication information includes: indication information of the at least one reference signal resource group, indication information of the at least one reference signal resource, or one of indication information of an antenna port corresponding to the at least one reference signal resource or A variety.

Optionally, the reference signal indication information includes at least one of indication information of the at least one reference signal resource group, indication information of the at least one reference signal resource, or at least two of indication information of the antenna port corresponding to the at least one reference signal resource. When the information is indicated, the at least two pieces of indication information are indicated according to the joint coding, or the at least two pieces of indication information are instructed according to the respective coding.

For example, the at least two pieces of indication information are jointly coded indications. The reference signal indication information may be carried in an indication field, and the indication field may be interpreted as at least one index, and one of the at least one index may indicate (or correspond to) the at least two pieces of indication information.

For another example, the at least two pieces of indication information are any two of the indication information, and the two types of indication information are separately coded. The reference signal indication information may be carried in an indication field, and the indication field may be interpreted as at least two indexes, and any two of the at least two indexes respectively indicate (or correspond to) the two indication information.

For another example, the at least two types of indication information are any two of the indication information, and the two indication information are separately encoded. The reference signal indication information includes a plurality of indication fields, and the plurality of indication fields are interpretable as a plurality of indexes, and any two of the plurality of indexes respectively indicate (or correspond to) the two indication information. It should be understood that the arbitrary two indexes may correspond to different indication domains, and may also correspond to the same indication domain.

Optionally, the reference signal indication information may indicate a first reference signal resource, where the first reference signal resource is one reference signal resource in the at least one reference signal resource group, where the first reference signal resource has a corresponding to the first antenna relationship.

FIG. 3 shows a schematic diagram of a transmitting antenna and a receiving antenna of a terminal device. As shown in FIG. 3, after the baseband processing module, the terminal device can be equipped with two radio frequency channels to support dual-issue functions. The terminal device has four antenna elements and can be simultaneously received. After the RF channel, there is a switch module. Through the switching of the switch, the upper RF channel can be selected to be switched between the antennas 0 and 1, and the lower RF channel can be switched between the antennas 2 and 3.

Optionally, the SRS resource information may be indicated by information bits.

Suppose there are N reference signal resource groups (N is a positive integer), and the N reference signal resource groups are resource group #1, resource group #2, ..., resource group #N, and resources in each reference signal resource group. The number may be the same or different (assuming there are n reference signal resources in each reference signal resource group, n is a positive integer), for example, resource group #1 includes resource #1, resource #2, ..., resource #n, The reference signal resource can be indicated by the information bit X, and Table 1 shows an information bit indication manner, as shown in Table 1.

Table 1 information bit indication mode

It should be understood that the resource group in the above table may be a reference signal resource group, and the resource may be a reference signal resource, which is not described below.

Or, assuming that there is a reference signal resource group, the reference signal resource group has n reference signal resources, and the reference signal resource can be indicated by the information bit X, as shown in Table 2, another information bit indication manner, such as 2 is shown. At this time, the resource group may not indicate or indicate by high layer signaling. The terminal device should understand the SRS resource group in which the indicated SRS resource is located.

Table 2 information bit indication mode

X Meaning of information bits Value 0 Resource #1 Value 1 Resource #2 ... ... Value n-1 Resource#n

Table 3 shows a correspondence between a reference signal resource and a transmitting antenna. It is assumed that there is a resource group including resource #1, resource #2, resource #3, and resource #4, where resource #1. Resource #2, Resource #3, and Resource #4 correspond to antenna (group) #1, antenna (group) #2, antenna (group) #3, and antenna (group) #4, respectively, as shown in Table 3.

Table 3 Correspondence between reference signal resources and transmitting antennas

The terminal device determines by itself that the terminal device can determine the number of SRS resources configured according to the SRS resource group. When the number of SRS resources in the SRS resource group is greater than one, the terminal device maps at least two SRS resources in one SRS resource group to the antennas that are not identical.

It should be understood that the first reference signal resource has a corresponding relationship with the first antenna. It can be understood that in Table 3, the resource #1 corresponds to the antenna (group) #1, and the resource #2 corresponds to the antenna (group). 2, can also be understood as the other correspondence in Table 3.

It should be understood that the table is an example, and the specific number of antenna ports of each resource is not limited, and may be 2 port or 1 port. The antenna corresponding to each resource is also not limited. For example, resource #1 corresponds to antennas 0 and 2 in the example, and may also correspond to other antennas.

For example, the reference signal indication information indicates a first reference signal resource (such as resource #1 in Table 3 above), and resource #1 in the resource group #1 corresponds to antennas 0, 2 in FIG. 3, and the terminal device receives After the reference signal indicates the information, the uplink data may be sent to the network device through the antennas 0 and 2, and the uplink data may be sent to the network device through the antenna 0. The uplink data may also be sent to the network device through the antenna 2.

Further, the correspondence between the first reference signal resource and the first antenna may be represented by a table, or by a function of a parameter, and the function of the parameter may refer to a function of an SRS antenna port and a PUSCH antenna port. , either a function between the SRS antenna port and the user port, or a function between the PUSCH antenna port and the user port. These methods all express the mapping relationship between the first reference signal resource and the antenna.

It should be understood that the embodiment of the present application may be designed for the foregoing terminal device having the antenna switching function. The embodiment of the present application is applicable to the case where the transmitting and receiving antennas are asymmetric. The structure of FIG. 3 may also be referred to as a 2T4R capability, and further, There are 1T2R, 1T4R, 2T8R, etc., and the application is not limited thereto.

It should also be understood that the correspondence between the information bit indication manner and the reference signal resource and the transmitting antenna may also be as shown in Table 4.

Table 4: Information bit indication mode and correspondence between reference signal resources and transmitting antennas

It should be understood that the correspondence between the information bit indication manner, the reference signal resource and the transmitting antenna enumerated above is only an exemplary description, and should not be construed as limiting the application.

Optionally, the reference signal indication information may indicate a first reference signal resource group, where the first reference signal resource group is one reference signal resource group in the at least one reference signal resource group, the first reference signal resource group and the first An antenna has a corresponding relationship.

Optionally, the reference signal resource group may be indicated by information bit X, and Table 5 shows an indication manner of information bits, as shown in Table 5.

Table 5 information bit indication mode

X Meaning of information bits Value 0 Resource Group #1 Value 1 Resource Group #2 ... ... Value N-1 Resource group #N

Table 6 shows the correspondence between a reference signal resource group and a transmitting antenna, as shown in Table 6.

Table 6 Correspondence between reference signal resource group and transmitting antenna

For example, the reference signal indication information indicates a first reference signal resource group (such as resource group #1), and the resource group #1 corresponds to the antennas 0 and 2 in FIG. 3, and after receiving the reference signal indication information, the terminal device receives the reference signal indication information. The uplink data may be sent to the network device through the antennas 0 and 2, and the uplink data may be sent to the network device through the antenna 0. The uplink data may also be sent to the network device through the antenna 2. It should be understood that the correspondence between the information bit indication manner and the reference signal resource group and the transmitting antenna may also be as shown in Table 7.

Table 7: Information bit indication mode and correspondence between reference signal resource group and transmitting antenna

It should be understood that, in the resource group #1, one or more resources may be included in the resource group #1. When the resource group #1 includes only one reference signal resource, the corresponding transmitting antenna of the resource is the antennas 0 and 2. Or, when the resource group #1 includes multiple resources, the multiple resources may correspond to the same transmitting antenna, such as antennas 0 and 2.

It should also be understood that when the resource group #1 includes multiple resources, the multiple resources may also correspond to different transmitting antennas. For example, the resource group #1 includes resource #1 and resource #2, and the resource #1 corresponds to the antenna 0. 2, the resource #2 corresponds to the antennas 1, 3, after the terminal device receives the reference signal indication information, the terminal device may determine to send uplinks on at least part of the antennas 0, 1, 2, 3 based on other information. The data is transmitted on the antennas 0 and 2 corresponding to the resource #1, or the uplink data is transmitted on the antennas 1 and 3 corresponding to the resource #2. For example, the terminal device may determine to send uplink data on the antennas 0 and 2 corresponding to the resource #1 or uplink data on the antennas 1 and 3 corresponding to the resource #2 according to other information in the DCI.

It should be noted that, the embodiment of the present application does not limit whether the number of antennas corresponding to each reference signal resource group is the same, that is, the number of antennas corresponding to each reference signal resource group may be the same, partially the same, or different.

Optionally, the reference signal indication information may indicate the first reference signal resource group and the first reference signal resource.

It should be understood that the manner in which the reference signal indication information indicates the first reference signal resource group and the first reference signal resource may be in the indication manner as shown in Table 1, and may also be indicated by other indication manners, for example, the terminal device may indicate the information by using the reference signal. Determining a first reference signal resource group of the at least one reference signal resource group, and then determining a first reference signal resource of the at least one reference signal resource included in the first reference signal resource group.

Optionally, the network device indicates, by using the first reference resource group and the first reference resource, a correspondence between the reference signal resource and the antenna, where the identifier of the SRS resource is independent of the resource group, and the correspondence between the reference signal resource and the antenna may be Table 8 shows.

Table 8 Correspondence between reference signal resources and antennas

The resources in the multiple resource groups have distinguishable identifiers, so that the corresponding antennas can be determined by using the information bits to indicate the SRS resources.

Optionally, the reference signal indication information may also be used to indicate weight information for transmitting uplink data.

Optionally, the weight information includes at least one of precoding matrix information, a precoder, a spatial beamforming, or a spatial transmission filter.

Optionally, the precoding matrix refers to a weight in the form of a mathematical matrix used by the transmitting end to perform precoding processing. The set of at least one precoding rectangle may be a codebook, and the precoding matrix in the codebook may be determined by an index of the precoding matrix. The index may consist of one or more indexes. The precoding matrix information can be embodied as an index of the precoding matrix.

Illustratively, the weight information includes precoding matrix information and a spatial transmission filter. That is, the reference signal indication information indicates a spatial transmission filter, which can be understood as analog weight beam information. The weight information further includes precoding matrix information, that is, the reference signal indication information further indicates information related to the precoding matrix, such as the number of antenna ports of the precoding matrix.

Exemplarily, the weight information may include precoding matrix information of the SRS. (The reference signal indication information may determine that the antenna port that sends the uplink data is P=1, 2, 4, so as to know which table in the corresponding protocol is to be interpreted. The indication field of the precoding matrix).

S220: The terminal device sends uplink data to the network device according to the reference signal indication information, where the network device receives uplink data that is sent by the terminal device according to the reference signal indication information.

Optionally, the terminal device sends the uplink data to be sent to at least part of the antennas in the first antenna.

Specifically, the baseband chip in the terminal device generates uplink data to be sent, and outputs uplink data to be sent to at least part of the antennas in the first antenna.

Optionally, the power of the antenna may be controlled by using a power control manner, and the uplink data is sent to the network device according to the first power by using at least part of the antennas in the first antenna.

It should be understood that the first power may be non-zero power, and the non-zero power may be an index value of non-zero power; or the first power may refer to power that meets a certain power indicator, the certain power is met. The indicator may be embodied as greater than, or equal to, the power of the indicator power, which is considered to be non-zero power; or the first power is the power of transmitting uplink data. The power for transmitting the uplink data may be the power calculated by the terminal device according to the requirements of the power control. The requirements of the power control can be embodied as a formula, a table, etc. of power control.

For example, the baseband chip or other chip or component of the terminal device controls the power of at least part of the antennas in the first antenna to be 0, and outputs the generated uplink data to be transmitted to the first antenna, due to at least part of the first antenna. If the power of the antenna is 0, the uplink data to be sent is sent to the network device through the remaining antennas. Alternatively, the baseband chip controls the transmit power of at least part of the antennas in the first antenna to be the functional power for transmitting the uplink data, and controls the antenna power that is not expected to map the uplink data to be zero power, so that the uplink data only has a non-in the first antenna. Transmit power on at least part of the antenna of zero power.

It should be understood that the uplink data may be jointly received by multiple network devices. For example, the first network device controls a transmitting antenna of the terminal device, and the one or more second network devices may also receive uplink data sent by the terminal device, where the first network The device and the second network device may be the same network device or different network devices, and the uplink data is sent by at least part of the antennas of the first antenna of the terminal device.

It should also be understood that the first network device and the second network device are different network devices, the first network device and the second network device are in different geographical locations, or the first network device and the second network The devices are respectively independent physical devices (ie, the first network device and the second network device are not integrated in the same device).

The communication method of the embodiment of the present application, by referring to the antenna information indicating that the PUSCH is transmitted in the reference signal indication information, helps to ensure that the channel corresponding to the antenna for transmitting the uplink data by the end device may be consistent with the channel measurement result used by the network device to schedule the PUSCH. , thereby avoiding performance loss and improving the performance gain brought by transmit diversity.

Optionally, the communication method 200 may further include:

S201. The network device sends resource configuration information to the terminal device, where the terminal device receives resource configuration information sent by the network device, where the resource configuration information includes at least one reference signal resource group, where the at least one reference signal resource group includes at least one reference. And a signal resource, the at least one reference signal resource group includes the first reference signal resource group, and the at least one reference signal resource includes the first reference signal resource.

It should be understood that the resource configuration information may be associated with the reference signal indication information, for example, the resource configuration information includes at least one reference signal resource group, the at least one reference signal resource group includes at least one reference signal resource, the at least one reference signal The resource group includes the first reference signal resource group, and the at least one reference signal resource includes the first reference signal resource, and the correspondence between the at least one reference signal resource and the at least one antenna in the resource configuration information may be as shown in Table 1 to Table 8. It can also be configured to the terminal device by other means, which is not limited in this application.

It should be further understood that the correspondence between the at least one reference signal resource/the at least one reference signal resource group and the at least one antenna in the resource configuration information may be one of a predefined rule, a display indication, or an implicit indication, or a self-determination manner. Kind or multiple determinations.

The terminal device determines that the terminal device can determine the antenna corresponding to the SRS resource according to the number of SRS resources configured in the SRS resource group. When the number of SRS resources in the SRS resource group is greater than one, the terminal device maps at least two SRS resources in one SRS resource group to the antennas that are not identical.

Optionally, the communication method 200 may further include:

S202. The terminal device sends a reference signal to the network device on the at least one reference signal resource, where the network device receives the reference signal sent by the terminal device on the at least one reference signal resource.

It should be understood that there is no actual sequence between S210-S220 and S201-S202 in the embodiment of the present application, and there may be no actual connection between S210-S220 and S201-S202.

Optionally, the resource configuration information is carried in the high layer signaling.

The high layer signaling may include, for example, one or more of a radio resource control (RRC) message and a media access control (MAC)-control element (CE).

It should be understood that the above-mentioned high layer signaling is merely illustrative and should not be construed as limiting the application. The high layer signaling may also include other signaling from the upper layer, which will not be enumerated here for brevity. For the sake of brevity, the related description of the high layer signaling is omitted when referring to higher layer signaling.

Optionally, the at least one reference signal resource has a corresponding relationship with the at least one antenna.

The following takes the reference signal as an example of SRS.

In S202, the terminal device may use the kth antenna (group) corresponding to the j th SRS resource in the i th SRS resource group, and send the SRS on the j th SRS resource, where i, j, and k are positive Integer.

Here, the "correspondence" relationship of the kth antenna (group) corresponding to the jth SRS resource can be understood as: the terminal device can transmit the SRS on the jth SRS resource by using the kth antenna (group).

It should be understood that the kth antenna (group) includes one or more antennas.

In this embodiment of the present application, the terminal device may determine the kth antenna (group) corresponding to the jth SRS resource by using any one of the following manners:

Manner 1: The terminal device may determine a kth antenna (group) corresponding to the jth SRS resource according to a predefined rule. For example, pre-defined rules can be embodied in the form of tables, functions, and the like. For example, the relationship between the jth SRS resource and the corresponding antenna (group) is related to the resource identifier of the SRS resource, or the sequential ordering of the resource identifier of the SRS resource.

Optionally, the SRS antenna port has a one-to-one correspondence with the antenna. For example, the SRS antenna port number of the SRS resource is consistent with the antenna number.

Manner 2: The terminal device can receive antenna configuration information sent by the network device, and determine a kth antenna (group) corresponding to the jth SRS resource according to the antenna configuration information. Optionally, the network device may configure the antenna information corresponding to the SRS resource by using the high layer signaling, where the antenna information corresponding to the SRS resource is embodied as a field of the configuration information of the SRS resource.

Manner 3: The terminal device determines the kth antenna (group) corresponding to the jth SRS resource by itself.

Further, the resource and the corresponding antenna may be considered to be quasi-co-located, and the network device may configure the SRS antenna port of the resource and the quasi-co-located antenna for the terminal device. The network device can configure the jth SRS resource to have a quasi co-location relationship with the kth antenna (group).

The following takes 2T4R as an example for explanation.

For the 2T4R terminal device, the network device configures an SRS resource group, which includes two SRS resources, and each SRS resource is a 2 port SRS resource, and the two SRS resources should be sent by using different antennas. Further, the two SRSs are sent. The antenna sets of resources are non-coincident antenna sets. Specifically, each SRS resource and which antenna (group) is sent may be implemented by a predefined, or network device, or by the terminal device.

Exemplarily, in the two SRS resources, the resource ID is smaller and transmitted on one group of antennas, such as 0, 2, and the resource ID is larger, and is transmitted on another group of antennas, such as 1, 3. In this way, the network device can instruct the terminal device to send SRS resources (groups) to measure the channels corresponding to the antennas.

Optionally, the network device and the terminal device may determine a one-to-one correspondence between the jth reference signal resource and the kth antenna (group) based on a predefined rule. Optionally, the network device and the terminal device may determine a one-to-one correspondence between the j reference signal resources and the kth antenna (group) according to the identifier of the antenna and the identifier of the reference signal resource.

In a possible design, the one-to-one correspondence between the jth SRS resource and the kth antenna (group) may be sequentially determined according to the order of the antennas from small to large and the identification of the SRS resources from small to large.

Table 9 below shows an antenna configuration of the 2T4R, which exemplarily shows the correspondence between the SRS Resource Indicator (SRI) and the identifier of the antenna group. In the correspondence shown in Table 9 below, {SRI0, SRI1, SRI2, SRI3} may be an identifier of four SRS resources, and satisfy SRI0 < SRI1 < SRI2 < SRI3.

As shown in Table 9, the one-to-one correspondence between the jth SRS resource and the kth antenna (group) can be established according to the identifier of the antenna (group) or the identifier of the SRS resource. For example, SRI0 is respectively established in a one-to-one correspondence with the first antenna (group). When a certain SRS resource is used, the corresponding antenna group or antenna can be determined.

Table 9

It should be understood that the correspondence between the identifiers of the SRS resources enumerated above and the antennas (groups) is merely exemplary, and should not be limited to the present application. For example, {SRI0, SRI1, SRI2, SRI3} can also satisfy SRI0>SRI1. >SRI2>SRI3. It should also be understood that indicating the correspondence between SRS resources and antennas or antenna groups through a table is only one possible implementation, and should not be construed as limiting the application. The implementation of the correspondence between the SRS resource and the antenna or the antenna group is not particularly limited.

It should be noted that, the present application is only for ease of understanding and description, and the specific process of transmitting and receiving the reference signal is illustrated by taking the transmission of one reference signal as an example. However, this application should not be construed as limiting. Optionally, the number of times the terminal device sends the reference signal may be determined according to any one of the following: a ratio of the number of downlink antennas to the number of uplink antennas and a ratio of the number of uplink antennas to the number of uplink antennas that can be simultaneously transmitted. For example, for a terminal device whose antenna is configured as aTbR, one antenna switching can be completed by transmission of a/b reference signals. A and b are positive integers. When a/b is not an integer, it can be rounded up, rounded down, or rounded off. This application does not limit this.

Optionally, the antenna that sends the uplink data by the terminal device includes at least part of the first antenna and the second antenna, and the communications method 200 further includes:

The network device sends the first indication information to the terminal device, where the terminal device receives the first indication information sent by the network device, where the first indication information is used to indicate the second antenna.

It should be understood that the second antenna includes one or more antennas.

It should also be understood that the second antenna may also be obtained by one or more of a predefined, other indication information explicitly indicated, or other indication information implicit indication.

Exemplarily, a part of the antennas transmitting the uplink data may be indicated by the reference signal indication information, and the second antenna (the other part of the antenna transmitting the uplink data) may be indicated by one or more of the following indications: a domain in the DCI The medium access control layer controls the domain in the element MAC CE, or the cyclic redundancy check (CRC) mask of the DCI.

Optionally, at least part of the antenna that transmits the uplink data is the same as at least part of the antenna that transmits the at least one reference signal.

Optionally, at least part of the antenna that sends the uplink data is the same as at least part of the antenna that sends the at least one reference signal, and the antenna port that sends the uplink data and the reference signal antenna port of the reference signal are The quasi-co-located, or the antenna port that sends the uplink data and the user port corresponding to the reference signal are quasi-co-located. Further, the reference signal antenna port of the reference signal and the user port corresponding to the reference signal are quasi-co-located.

Optionally, the network device configures at least one of a reference signal switching function or an uplink transmission function for at least part of the at least one reference signal resource group in the at least one reference signal resource group.

Specifically, the network device may configure at least one SRS resource for the terminal device, where the at least one SRS resource may form one or more resource groups. The network device may configure the use of the SRS resource group in RRC signaling, including one of beam management, codebook, non-codebook, and antenna switching. Kind or more. Alternatively, the codebook or the non-codebook are both defined for uplink transmission (ie, the usage indication is not distinguished), and the use of the SRS resource group includes beam management, uplink transmission (codebook/non-codebook), or antenna switching. One or more of them.

For example, the network device may configure an SRS resource group as an SRS handover and an uplink transmission, and the uplink transmission includes a codebook-based transmission and a non-codebook-based transmission; or the network device may configure an SRS resource group as SRS handover and codebook based transmission; alternatively, the network device may configure a certain SRS resource group as an SRS resource group configured for SRS handover and non-codebook based transmission. Alternatively, the network device may configure an SRS resource group as an uplink transmission, and the uplink transmission includes a codebook-based transmission, or a non-codebook-based transmission, and an antenna selection enabling information, where the SRS resource is used for uplink transmission. The group has the functional features of antenna switching. The functional feature of the antenna handover may include that the transmit antennas of the at least two SRS resources in the SRS resource group are at least partially different. The antenna selection enable information may be configured by the base station through higher layer signaling.

Optionally, the at least one reference signal resource group includes a first reference signal resource group set and a second reference signal resource group set, where the first reference signal resource group set has a reference signal switching function, and the second reference signal resource group has The uplink transmission function, the first reference signal resource group is associated with the two reference signal resource groups.

Specifically, the association may be implemented by at least one of the at least one reference signal resource group in the first reference signal resource group set and at least one of the at least one reference signal resource group in the second reference signal resource group set. A reference signal resource has a connection, such as having the same resource identifier, or the resource identifier has a corresponding relationship.

For example, the network device allows the SRS resource group configured as the SRS switching function to have a corresponding relationship with the SRS resource group indicated by the uplink transmission. Specifically, the SRS resources in the two resource groups have a relationship, for example, having the same resource ID. Or have a specific mapping relationship. The SRS resources in the SRS handover function correspond to the same transmission antenna allocation when they have a corresponding relationship with the SRS resources used for the uplink transmission indication. Further, when one of the SRS resource groups is configured or re-allocated, another SRS resource group correspondingly updates the resources, for example, may include updating an antenna corresponding to the corresponding resource.

The communication method of the embodiment of the present application, by establishing an association relationship between the reference signal resource groups, so that the network device can receive the reference signal sent on the specific antenna, and indicate the antenna for transmitting the uplink data by referring to the signal indication information, so that The use of the reference signal group to achieve the effect of controlling the antenna for uplink data transmission can reduce the complexity and overhead of the configuration.

Optionally, the at least one reference signal resource group can be embodied in an implicit manner for uplink antenna selection. For example, the network device configures the SRS antenna port of the SRS resource in the at least one reference signal resource group and the antenna port of the PUSCH carrying the uplink data to be quasi-co-located. And causing the terminal device to learn that the at least one reference signal resource group is used to indicate transmit antenna information of the PUSCH.

In the communication method of the embodiment of the present application, by using the reference signal resource for antenna selection of uplink data, the reference signal can be transmitted on different antennas, so that the network device obtains channel information of the corresponding antenna, and enables the network to The antenna for transmitting the uplink data is indicated by the reference signal indication information, so that the function of the reference signal resource is clear, which helps the system to flexibly apply the function of the reference signal.

Optionally, at least part of the at least one reference signal resource group has an antenna selection function of uplink data; or at least part of the at least one reference signal resource has an antenna selection function of uplink data.

It should be understood that the resource configuration information of the network device configuration includes the indication of the transmitting antenna information; or the reference signal resource configured by the network device has a corresponding relationship with the transmitting antenna, for example, the identifier of the reference signal resource has a corresponding relationship with the transmitting antenna, such as a reference signal resource. The identifiers are in an increasing or decreasing order corresponding to the increasing or decreasing order of the transmitting antenna numbers; or, the reference signal antenna port of the reference signal resource has a quasi-co-located relationship with the transmitting antenna (user port).

Further, when the uplink transmission mode is codebook-based transmission, the SRS antenna port of the SRS resource and the antenna port of the PUSCH may be considered to have a quasi-co-location relationship. When the uplink transmission mode is non-codebook-based transmission, it may be considered. The SRS resource (SRS antenna port) applies the same or similar spatial transmission filter as the PUSCH (antenna port).

Specifically, when the network device configures the antenna selection function of the uplink data, the SRS resource group is allowed to be configured for uplink transmission. The uplink transmission includes codebook based transmission of uplink data selection, codebook based transmission, non-codebook based transmission of uplink data selection, or one or more of non-codebook based transmission.

The codebook-based transmission and the non-codebook-based transmission may refer to a codebook-based transmission or a non-codebook-based transmission that does not allow the terminal device to perform open-loop selection, or allow the terminal device to perform an open-loop day. Selected codebook based transmission, or non-codebook based transmission.

It should be understood that the above several configurations may be limited to the premise that the network device allows the antenna selection function.

It should also be understood that a resource group for SRS handover includes at least one SRS resource, and each SRS resource in one SRS resource group is applied to different antenna transmissions, and the number of SRS ports included in each SRS resource is sent simultaneously with the support of the terminal device. The number of antennas is related. In the non-codebook-based transmission mode, the number of SRS ports included in each SRS resource may be independent of the number of antennas that are simultaneously transmitted, such as 1.

Optionally, the communication method further includes:

The terminal device sends the capability of the terminal device to the network device, and the network device receives the capability of the terminal device sent by the terminal device.

Optionally, the communication method further includes:

The network device sends the indication information to the terminal device, where the terminal device receives the indication information sent by the network device, where the indication information is used to instruct the terminal device to perform antenna selection.

Specifically, the terminal device can report the capability of the terminal device by using a high-level cell, where the capability of the terminal device includes the capability of supporting antenna selection. Further, the capability of the terminal device further includes information related to the antenna structure of the terminal device, such as antenna group information, etc., through the information about the antenna structure of the terminal device, the network device can obtain which antennas of the terminal device can be simultaneously Which antennas are sent cannot be sent at the same time.

The network device may further send the indication information to the terminal device, where the indication information is used to instruct the terminal device to perform antenna selection, by using the indication information, the terminal device may obtain: whether to perform antenna selection, whether to perform closed loop antenna selection, or whether to open At least one of the ring antenna selections.

It should be understood that the network device configuration day selection function may be a separate signaling or a type of uplink transmission mode, for example, the uplink transmission mode may include: a codebook based transmission mode, a non-codebook based transmission mode, and One or more of a codebook-based transmission method of the day-selection function, a codebook-based transmission method having a day-selection function, and the like.

The communication method of the embodiment of the present application is described in detail above with reference to FIG. 2 and FIG. 3. The communication device of the embodiment of the present application will be described in detail below with reference to FIGS. 4 to 6.

FIG. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present application. The terminal device can be applied to the system shown in FIG. 1 to perform the functions of the terminal device in the above method embodiment. For the convenience of explanation, FIG. 4 shows only the main components of the terminal device. As shown in FIG. 4, the terminal device 40 includes a processor, a memory, a control circuit, an antenna, and an input and output device. The processor is mainly used for processing the communication protocol and the communication data, and controlling the entire terminal device, executing the software program, and processing the data of the software program, for example, for supporting the terminal device to perform the actions described in the foregoing method embodiments, such as And transmitting uplink data or the like according to the reference signal indication information. The memory is mainly used for storing software programs and data, for example, storing the correspondence between the indication information and the combination information described in the above embodiments. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals. The control circuit together with the antenna can also be called a transceiver, and is mainly used for transmitting and receiving RF signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are primarily used to receive user input data and output data to the user.

After the terminal device is powered on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When the data needs to be transmitted by wireless, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal, and then sends the radio frequency signal to the outside through the antenna in the form of electromagnetic waves. When data is transmitted to the terminal device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.

Those skilled in the art will appreciate that FIG. 4 shows only one memory and one processor for ease of illustration. In an actual terminal device, there may be multiple processors and multiple memories. The memory may also be referred to as a storage medium or a storage device, and the like.

As an optional implementation manner, the processor may include a baseband processor and/or a central processing unit, and the baseband processor is mainly used to process a communication protocol and communication data, and the central processing unit is mainly used to control the entire terminal device. Execute software programs to process data from software programs. The processor in FIG. 4 can integrate the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit can also be independent processors and interconnected by technologies such as a bus. Those skilled in the art will appreciate that the terminal device may include a plurality of baseband processors to accommodate different network standards, and the terminal device may include a plurality of central processors to enhance its processing capabilities, and various components of the terminal devices may be connected through various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The functions of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.

In the embodiment of the present application, the antenna and the control circuit having the transceiving function can be regarded as the transceiving unit 401 of the terminal device 40, for example, for supporting the terminal device to perform the receiving function and the transmitting function as described in part in FIG. The processor having the processing function is regarded as the processing unit 402 of the terminal device 40. As shown in FIG. 4, the terminal device 40 includes a transceiver unit 401 and a processing unit 402. The transceiver unit can also be referred to as a transceiver, a transceiver, a transceiver, and the like. Optionally, the device for implementing the receiving function in the transceiver unit 401 can be regarded as a receiving unit, and the device for implementing the sending function in the transceiver unit 401 is regarded as a sending unit, that is, the transceiver unit 401 includes a receiving unit and a sending unit. The receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit or the like.

The processor 402 can be configured to execute instructions stored in the memory to control the transceiver unit 401 to receive signals and/or transmit signals to perform the functions of the terminal device in the foregoing method embodiment. As an implementation manner, the function of the transceiver unit 401 can be implemented by a dedicated chip through a transceiver circuit or a transceiver.

FIG. 5 is a schematic structural diagram of a network device according to an embodiment of the present disclosure, which may be a schematic structural diagram of a base station. As shown in FIG. 5, the base station can be applied to the system shown in FIG. 1 to perform the functions of the network device in the foregoing method embodiment. The base station 50 can include one or more radio frequency units, such as a remote radio unit (RRU) 501 and one or more baseband units (BBUs) (also referred to as digital units, DUs). 502. The RRU 501 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 5011 and a radio frequency unit 5012. The RRU 501 portion is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for transmitting reference signal indication information described in the foregoing embodiments to a terminal device. The BBU 502 part is mainly used for performing baseband processing, controlling a base station, and the like. The RRU 501 and the BBU 502 may be physically disposed together or physically separated, that is, distributed base stations.

The BBU 502 is a control center of a base station, and may also be referred to as a processing unit, and is mainly used to perform baseband processing functions such as channel coding, multiplexing, modulation, spread spectrum, and the like. For example, the BBU (processing unit) 502 can be used to control the base station to perform an operation procedure about the network device in the foregoing method embodiment.

In an example, the BBU 502 may be configured by one or more boards, and multiple boards may jointly support a single access indication radio access network (such as an LTE network), or may support different access systems respectively. Radio access network (such as LTE network, 5G network or other network). The BBU 502 also includes a memory 5021 and a processor 5022 for storing the necessary instructions and data. For example, the memory 5021 stores the correspondence relationship between the codebook index and the precoding matrix in the above embodiment. The processor 5022 is configured to control the base station to perform necessary actions, for example, to control the base station to perform an operation procedure of the network device in the foregoing method embodiment. The memory 5021 and the processor 5022 can serve one or more boards. That is, the memory and processor can be individually set on each board. It is also possible that multiple boards share the same memory and processor. In addition, the necessary circuits can be set on each board.

FIG. 6 shows a schematic structural diagram of a communication device 600. The device 600 can be used to implement the method described in the foregoing method embodiments, and can be referred to the description in the foregoing method embodiments. The communication device 600 can be a chip, a network device (such as a base station), a terminal device or other network device, and the like.

The communication device 600 includes one or more processors 601. The processor 601 can be a general purpose processor or a dedicated processor or the like. For example, it can be a baseband processor, or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processor can be used to control communication devices (eg, base stations, terminals, or chips, etc.), execute software programs, and process data of the software programs. The communication device may include a transceiver unit for implementing input (reception) and output (transmission) of signals. For example, the communication device can be a chip, and the transceiver unit can be an input and/or output circuit of the chip, or a communication interface. The chip can be used for a terminal or base station or other network device. For another example, the communication device may be a terminal or a base station or other network device, and the transceiver unit may be a transceiver, a radio frequency chip, or the like.

The communication device 600 includes one or more of the processors 601, and the one or more processors 601 can implement the method of the network device or the terminal device in the embodiment shown in FIG. 2.

In one possible design, the communication device 600 includes means for generating reference signal indication information, and means for transmitting reference signal indication information. The function of generating the reference signal indication information and the means of transmitting the reference signal indication information may be implemented by one or more processors. For example, the reference signal indication information may be generated by one or more processors, and the reference signal indication information may be transmitted through a transceiver, or an input/output circuit, or an interface of a chip. For the reference signal indication information, refer to the related description in the foregoing method embodiments.

In one possible design, the communication device 600 includes means for receiving reference signal indication information, and means for transmitting uplink data based on the reference signal indication information. The reference signal indication information and how to send the uplink data according to the reference signal indication information may refer to the related description in the foregoing method embodiment. For example, the reference signal indication information may be received through a transceiver, or an input/output circuit, or an interface of the chip, and the uplink data is sent by the one or more processors according to the reference signal indication information.

Optionally, the processor 601 can implement other functions in addition to the method of the embodiment shown in FIG. 2.

Alternatively, in one design, the processor 601 can execute instructions such that the communication device 600 performs the method described in the above method embodiments. The instructions may be stored, in whole or in part, in the processor, such as instructions 603, or may be stored in whole or in part in memory 602 coupled to the processor, such as instruction 604, or may be caused by instructions 603 and 604. The communication device 600 performs the method described in the above method embodiments.

In yet another possible design, the communication device 600 can also include circuitry that can implement the functionality of the network device or terminal device in the foregoing method embodiments.

In yet another possible design, the communication device 600 can include one or more memories 602 having instructions 604 stored thereon that can be executed on the processor such that the communication device 600 executes The method described in the above method embodiments. Optionally, data may also be stored in the memory. Instructions and/or data can also be stored in the optional processor. For example, the one or more memories 602 may store the corresponding relationships described in the above embodiments, or related parameters or tables or the like involved in the above embodiments. The processor and the memory may be provided separately or integrated.

In yet another possible design, the communication device 600 may further include a transceiver unit 605 and an antenna 606. The processor 601 may be referred to as a processing unit that controls a communication device (terminal or base station). The transceiver unit 605 can be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., for implementing the transceiving function of the communication device through the antenna 606.

The application also provides a communication system comprising one or more of the aforementioned network devices, and one or more terminal devices.

It should be noted that the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. The processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.

It is to be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory. The volatile memory can be a Random Access Memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Synchronous Connection Dynamic Random Access Memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the present application further provides a computer readable medium, where a computer program is stored, and when the computer program is executed by a computer, the communication method described in any one of the foregoing method embodiments is implemented.

The embodiment of the present application further provides a computer program product, which is implemented by a computer to implement the communication method described in any one of the foregoing method embodiments.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (DVD)), or a semiconductor medium (for example, a solid state hard disk (Solid State Disk, SSD)) and so on.

The embodiment of the present application further provides a processing apparatus, including a processor and an interface, and the processor is configured to execute the communication method described in any one of the foregoing method embodiments.

It should be understood that the foregoing processing device may be a chip, and the processor may be implemented by hardware or by software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; The processor may be a general purpose processor implemented by reading software code stored in the memory. The memory may be integrated in the processor and may exist independently of the processor.

It is to be understood that the phrase "one embodiment" or "an embodiment" or "an embodiment" or "an embodiment" means that the particular features, structures, or characteristics relating to the embodiments are included in at least one embodiment of the present application. Thus, "in one embodiment" or "in an embodiment" or "an" In addition, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in the various embodiments of the present application, the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application. The implementation process constitutes any limitation.

Additionally, the terms "system" and "network" are used interchangeably herein. The term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

It should be understood that in the embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, for clarity of hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of cells is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined or integrated. Go to another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.

The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present application.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present application can be implemented by hardware implementation, firmware implementation, or a combination thereof. When implemented in software, the functions described above may be stored in or transmitted as one or more instructions or code on a computer readable medium. Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A storage medium may be any available media that can be accessed by a computer. By way of example and not limitation, computer readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage device, or can be used for carrying or storing in the form of an instruction or data structure. The desired program code and any other medium that can be accessed by the computer. Also. Any connection may suitably be a computer readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable , fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwave are included in the fixing of the associated media. As used herein, a disk and a disc include a compact disc (CD), a laser disc, a compact disc, a digital versatile disc (DVD), a floppy disc, and a Blu-ray disc, wherein the disc is usually magnetically copied, and the disc is The laser is used to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media.

In summary, the above description is only a preferred embodiment of the technical solution of the present application, and is not intended to limit the scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application are intended to be included within the scope of the present application.

Claims (29)

A communication method, comprising: Receiving reference signal indication information, the reference signal indication information indicating a first reference signal resource, and/or a first reference signal resource group; The first reference signal resource has a corresponding relationship with the first antenna of the terminal device, and the first reference signal resource group has a corresponding relationship with the first antenna. The method of claim 1 further comprising: Transmitting uplink data to at least a portion of the first antennas; or Transmitting uplink data through at least part of the antennas of the first antenna; or Controlling that at least part of the antennas in the first antenna are non-zero when transmitting uplink data, or greater than or equal to a first threshold; or Uplink data is transmitted by one or more powers of non-zero power, or greater than or equal to a first threshold, by at least a portion of the antennas of the first antenna. The method according to claim 1 or 2, wherein the reference signal indication information comprises indication information of at least one reference signal resource group, indication information of at least one reference signal resource, or at least one reference signal resource corresponding to At least one of antenna port indication information, wherein the at least one reference signal resource group includes the first reference signal resource group, and the at least one reference signal resource includes the first reference signal resource. The method according to any one of claims 1 to 3, wherein the reference signal indication information is further used to indicate weight information for transmitting uplink data, the weight information including precoding matrix information, precoding At least one of a spatial beamforming, or a spatial transmission filter. The method according to any one of claims 1 to 4, further comprising: Receiving resource configuration information, the resource configuration information including at least one reference signal resource group, the at least one reference signal resource group including at least one reference signal resource, and the at least one reference signal resource group including the first reference signal resource group The at least one reference signal resource includes the first reference signal resource. The method according to claim 5, wherein the resource configuration information is carried in higher layer signaling. The method according to any one of claims 5 or 6, wherein the at least one reference signal resource has a corresponding relationship with at least one antenna. The method according to any one of claims 5 to 7, wherein at least part of the at least one reference signal resource group has at least one of a reference signal switching function or an uplink transmission function. The method according to claim 8, wherein the uplink transmission function is a codebook-based uplink transmission function or a non-codebook-based uplink transmission function. The method according to claim 8 or 9, wherein the at least one reference signal resource group comprises a first reference signal resource group set and a second reference signal resource group set, the first reference signal resource group set having The reference signal switching function, the second reference signal resource group set has an uplink transmission function, and the first reference signal resource group set is associated with the second reference signal resource group set. The method according to any one of claims 5 to 7, wherein at least part of the at least one reference signal resource group has an antenna selection function of uplink data; or, the at least one reference At least a portion of the reference signal resources in the signal resource have an antenna selection function for the uplink data. A communication method, comprising: Transmitting reference signal indication information, the reference signal indication information indicating a first reference signal resource, and/or a first reference resource group; The first reference resource group has a corresponding relationship with the first antenna of the terminal device, and the first reference signal resource group has a corresponding relationship with the first antenna. The method of claim 12, wherein the method further comprises: Uplink data from at least a portion of the antennas in the first antenna is received. The method according to claim 12 or 13, wherein the reference signal indication information comprises indication information of at least one reference signal resource group, indication information of at least one reference signal resource, or at least one reference signal resource corresponding to At least one of antenna port indication information, wherein the at least one reference signal resource group includes the first reference signal resource group, and the at least one reference signal resource includes the first reference signal resource. The method according to any one of claims 12 to 14, wherein the reference signal indication information is further used to indicate weight information for transmitting uplink data, the weight information including precoding matrix information, precoding At least one of a spatial beamforming, or a spatial transmission filter. The method according to any one of claims 12 to 15, wherein the method further comprises: Transmitting resource configuration information, where the resource configuration information includes at least one reference signal resource group, the at least one reference signal resource group includes at least one reference signal resource, and the at least one reference signal resource group includes the first reference signal resource group The at least one reference signal resource includes the first reference signal resource. The method according to claim 16, wherein the resource configuration information is carried in higher layer signaling. The method according to claim 16 or 17, wherein the at least one reference signal resource has a corresponding relationship with at least one antenna. The method according to any one of claims 16 to 18, wherein at least part of the at least one reference signal resource group has at least one of a reference signal switching function or an uplink transmission function. The method according to claim 19, wherein the uplink transmission function is a codebook-based uplink transmission function or a non-codebook-based uplink transmission function. The method according to claim 19 or 20, wherein the at least one reference signal resource group comprises a first reference signal resource group set and a second reference signal resource group set, the first reference signal resource group set having The reference signal switching function, the second reference signal resource group set has an uplink transmission function, and the first reference signal resource group set is associated with the second reference signal resource group set. The method according to any one of claims 16 to 18, wherein at least part of the at least one reference signal resource group has an antenna selection function of uplink data; or the at least one reference At least a portion of the reference signal resources in the signal resource have an antenna selection function for the uplink data. A communication device for performing the method of any of claims 1-11. A communication device for performing the method of any of claims 12-22. A communication device, comprising: a processor coupled to a memory; a memory for storing a computer program; A processor for executing a computer program stored in the memory to cause the apparatus to perform the method of any of claims 1-11. A communication device, comprising: a processor coupled to a memory; a memory for storing a computer program; A processor for executing a computer program stored in the memory to cause the apparatus to perform the method of any one of claims 12-22. A communication system, comprising: a terminal device and a network device, wherein the terminal device comprises the communication device according to claim 23 or 25, the network device comprising the communication according to claim 24 or Device. A readable storage medium comprising a program or an instruction, the method of any one of claims 1-11 or 12-22 being executed when the program or instruction is run on a computer. A computer program comprising a program or an instruction, the method of any one of claims 1-11 or 12-22 being executed when the program or instruction is run on a computer.

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