WO2018059419A1 - Uplink power control method and apparatus - Google Patents

Abstract

Provided are an uplink power control method and apparatus. The method comprises: a network side device sending a plurality of pieces of RACH configuration information to a UE, and indicating, via a RACH scheduling message, identification information about RACH configuration information used by the UE; and according to the RACH configuration information corresponding to the identification information, the UE calculating a RACH transmitting power, and according to the RACH transmitting power, sending a random access preamble to the network side device. Each piece of RACH configuration information corresponds to a receiving beam of a network side device or a transmitting beam of a UE, so as to enable the network side device to perform dynamic adjustment on a RACH transmitting power according to forming gain changes in different receiving beams or transmitting beams, thereby being able to precisely control the RACH transmitting power and improve the access success rate of an uplink RACH.

Description

Uplink power control method and device

This application claims the priority of the Chinese Patent Application submitted to the China Patent Office on September 30, 2016, the application number is 201610878908.1, and the application name is "Uplink Power Control Method and Device", and the request is submitted to China on March 10, 2017. The priority of the Chinese Patent Application, which is hereby incorporated by reference in its entirety in its entirety in the the the the the the the the the the the

Technical field

The Random Access Channel (RACH) uses open loop power control to set the power. The base station may adopt a beamforming technique when receiving a random access preamble transmitted by the UE through the RACH, and it may receive one or more preambles sent by the user by using different receiving beams.

Since the beamforming gains of different receiving beams are different, the target receiving power of the base station corresponding to different receiving beams and the format of the preamble used by the user may be different. When the UE transmits the preamble, the base station can perform adaptive switching of the receive beam according to the reception quality of the preamble, such as switching from the receive beam to the receive beam 2. For example, when the transmit beam and the receive beam reciprocity of the base station are not established, the base station needs to poll multiple candidate receive beams when receiving the preamble sent by the UE, to select an optimal receive beam to receive the preamble. At this time, the power control parameters of the preamble corresponding to different receiving beams may be different.

However, the power control mechanism of the existing RACH is usually based on fixed omnidirectional antenna transmission or based on fixed receive beam transmission. For the scenario where the receive beam changes rapidly, if the existing power control mechanism is still used, the power control of the RACH is not accurate enough. , thereby affecting the access success rate of the uplink RACH.

Background technique

The Random Access Channel (RACH) uses open loop power control to set the power. The base station may adopt a beamforming technique when receiving a random access preamble transmitted by the UE through the RACH, and it may receive one or more preambles sent by the user by using different receiving beams.

Since the beamforming gains of different receiving beams are different, the target receiving power of the base station corresponding to different receiving beams and the format of the preamble used by the user may be different. When the UE transmits the preamble, the base station can perform adaptive switching of the receive beam according to the reception quality of the preamble, such as switching from the receive beam to the receive beam 2. For example, when the transmit beam and the receive beam reciprocity of the base station are not established, the base station needs to poll multiple candidate receive beams when receiving the preamble sent by the UE, to select an optimal receive beam to receive the preamble. At this time, the power control parameters of the preamble corresponding to different receiving beams may be different.

However, the power control mechanism of the existing RACH is usually based on fixed omnidirectional antenna transmission or based on fixed receive beam transmission. For the scenario where the receive beam changes rapidly, if the existing power control mechanism is still used, the power control of the RACH is not accurate enough. , thereby affecting the access success rate of the uplink RACH.

Summary of the invention

The present invention provides an uplink power control method and apparatus, so that a network side device can dynamically adjust a transmit power of a RACH according to different receive beams or a transmit gain change of a transmit beam, thereby accurately controlling a RACH transmit power and improving uplink. RACH access success rate.

The first aspect of the present application provides an uplink power control method, including: receiving, by a UE, configuration information of multiple RACHs sent by a network side device, and receiving a scheduling message of the RACH sent by the network side device, where the RACH scheduling message is received. And the identifier information of the RACH configuration information of the configuration information of the multiple RACHs, where the UE determines the identifier from multiple pieces of RACH configuration information according to the identifier information included in the RACH scheduling message. The configuration information of the RACH corresponding to the information is used to calculate the transmit power of the RACH according to the determined RACH configuration information, and send a random access preamble to the network side device according to the transmit power of the RACH. The configuration information of each RACH corresponds to one receiving beam of the network side device or one transmitting beam of the UE, so that the network side device can dynamically transmit the RACH transmit power according to different receiving beams or the shaped gain variation of the transmitting beam. The adjustment can accurately control the transmit power of the RACH, improve the access success rate of the uplink RACH, and achieve the efficiency of data transmission power and the maximum data transmission performance.

The second aspect of the present application provides an uplink power control method, including: the network side device sends configuration information of multiple random access channel RACHs to the UE, and sends a scheduling message of the RACH to the UE, where the RACH scheduling message is used. And identifying information of configuration information of one RACH in the configuration information of the multiple RACHs. And determining, by the UE, the configuration information of the RACH corresponding to the identifier information from the configuration information of the multiple RACHs according to the identifier information included in the scheduling message of the RACH, and calculating the transmit power of the RACH according to the determined RACH configuration information.

The third aspect of the present application provides a UE, including:

a receiving module, configured to receive configuration information of multiple random access channel RACHs sent by the network side device;

The receiving module is further configured to receive a scheduling message of the RACH sent by the network side device, where the scheduling message of the RACH includes identifier information of one RACH configuration information of the multiple pieces of RACH configuration information;

a determining module, configured to determine configuration information of the RACH corresponding to the identifier information from the configuration information of the multiple pieces of RACH according to the identifier information included in the scheduling message of the RACH;

a calculation module, configured to calculate a transmit power of the RACH according to the determined RACH configuration information;

And a sending module, configured to send a random access preamble to the network side device according to the transmit power of the RACH.

The fourth aspect of the present application provides a network side device, including:

a sending module, configured to send, to the UE, configuration information of multiple random access channel RACHs;

The sending module is further configured to send, to the UE, a scheduling message of a RACH, where the scheduling message of the RACH includes identifier information of one piece of RACH configuration information in the configuration information of the multiple pieces of RACH.

In the first to fourth aspects of the present application, the configuration information of each RACH includes one or more of the following information: a power offset value of a receive beam used by the network side device, and format information of a random access preamble. The received power of the network side device, the format correction value of the preamble, the number of times the preamble is transmitted, and the power ramp step information when the preamble is retransmitted.

In the first to fourth aspects of the present application, the configuration information of each RACH corresponds to one receiving beam of the network side device. Or, the configuration information of each RACH corresponds to one transmit beam of the UE. Thereby enabling the network side device to vary according to the shaping gain of different transmit beams of the UE or different receive beams The shape gain change dynamically adjusts the transmit power of the RACH to maximize the efficiency of data transmission power and data transmission performance.

In the first to fourth aspects of the present application, the multiple pieces of RACH configuration information are sent by the network side device to the UE by using a broadcast channel or system information.

In the first to fourth aspects of the present application, the scheduling message of the RACH is notified to the UE by the network side device by using a physical layer control command.

In the first to fourth aspects of the present application, the preamble includes S cyclic prefixes and T sequences, and format information of the preamble includes the number S of the cyclic prefix and/or the sequence of the sequence. The number T, where S and T are integers greater than or equal to 1.

In the first to fourth aspects of the present application, the number S of the cyclic prefix and the number T of the sequences satisfy: T is an integer multiple of S.

In the first to fourth aspects of the present application, when the transmit beam of the UE is switched, the number of power ramps included in the configuration information of the RACH remains unchanged.

A fifth aspect of the present application provides a UE, where the UE includes a processor, a memory, and a communication interface, where the memory is used to store instructions, the communication interface is used to communicate with other devices, and the processor is configured to execute the memory. The instructions stored in the UE to cause the UE to perform the method provided by the first aspect of the present application.

A sixth aspect of the present application provides a network side device, where the network side device includes a processor, a memory, and a communication interface, where the memory is used to store an instruction, the communication interface is used to communicate with other devices, and the processor is used to Executing instructions stored in the memory to cause the network side device to perform the method provided by the second aspect of the present application.

The seventh aspect of the present application provides an uplink power control method, including: receiving, by a UE, power deviation information configured by a network side device, where the power deviation information is used to adjust a transmit power of the UE, where the UE is configured according to the power The deviation information determines the transmission power of the uplink channel or the uplink signal. The network side device is configured to configure power deviation information for the UE, where the power deviation information is used to adjust the transmit power of the UE, where the power offset information is determined by the network side device according to a beamforming gain change of the UE or the network side device, and the UE receives The power deviation information sent by the network device determines the transmit power of the uplink channel or the uplink signal according to the power deviation information. Since the power deviation caused by the beamforming gain variation is determined when determining the transmission power of the uplink channel or the uplink channel, the calculated uplink transmission power is more accurate.

Optionally, the receiving, by the UE, the power deviation information of the network side device configuration, including:

Receiving, by the UE, N power deviation items sent by the network side device, where N is a positive integer greater than or equal to 1;

Receiving, by the UE, an index of any one of the N power deviation terms sent by the network side device;

Determining, by the UE, the transmit power of the uplink channel or the uplink signal according to the power deviation information, including:

Determining, by the UE, a power deviation term corresponding to the index from the N power deviation items according to the received index of the power deviation term;

The UE determines a transmit power of the uplink channel or the uplink signal according to the determined power deviation term.

Optionally, the N power deviation items are sent by the network side device to the UE by using the high layer signaling, and the index of the power deviation term received by the UE is sent by the network side device by using downlink control signaling. To the UE.

Correspondingly, the UE receives any one of the N power deviation items sent by the network side device. The index of the rate deviation term, including:

Receiving, by the UE, a power control command word field sent by the network side device, where the power control command word field corresponds to a power deviation item index, or the power control command word field corresponds to a power deviation item index and a power control Command word;

Determining, by the UE, a power deviation term corresponding to the power control command word field from the N power deviation terms according to the power control command word field.

Optionally, the format of the downlink control signaling is any one of downlink control information DCI formats used for uplink data transmission.

Optionally, the receiving, by the UE, the power deviation information of the network side device configuration, including:

Receiving, by the UE, a power deviation term sent by the network side device;

Determining, by the UE, the transmit power of the uplink channel or the uplink signal according to the power deviation information, including:

The UE determines a transmit power of the uplink channel or the uplink signal according to the received power deviation term.

Optionally, the power deviation term received by the UE is sent by the network side device to the UE by using high layer signaling.

Optionally, the uplink channel is an uplink traffic channel or an uplink control channel, and the uplink signal is an uplink reference signal.

An eighth aspect of the present application provides an uplink power control method, including:

The network side device configures power deviation information for the UE, where the power deviation information is used to adjust the transmit power of the UE.

Optionally, the network side device configures power deviation information for the UE, including:

The network side device sends N power deviation items to the UE, where N is a positive integer greater than or equal to 1;

The network side device sends an index of any one of the N power deviation terms to the UE.

Optionally, the network side device sends the N power deviation items to the UE by using high layer signaling, where the network side device sends an index of the power deviation item to the UE by using downlink control signaling.

Correspondingly, the network side device sends an index of any one of the N power deviation items to the UE, including:

The network side device sends a power control command word field to the UE, where the power control command word field corresponds to a power deviation item index, or the power command word field corresponds to one power deviation term and one power control command word.

Optionally, the format of the downlink control signaling is any one of downlink control information DCI formats used for uplink data transmission.

Optionally, the network side device configures power deviation information for the user equipment UE, including:

The network side device sends a power deviation term to the UE.

Optionally, the network side device sends the power deviation item to the UE by using high layer signaling.

The ninth aspect of the present application provides a UE, including a receiving module and a determining module, where the receiving module is configured to receive power deviation information configured by the network side device, where the power deviation information is used to adjust a transmit power of the UE; And configured to determine, according to the power deviation information, a transmit power of an uplink channel or an uplink signal.

Optionally, the receiving module is specifically configured to: receive N power deviation items sent by the network side device, where N is a positive integer greater than or equal to 1, and receive the N power deviations sent by the network side device. The index of any power deviation term in the item. Correspondingly, the determining module is specifically configured to: according to the received power offset An index of the difference, determining a power deviation term corresponding to the index from the N power deviation terms, and determining a transmit power of the uplink channel or the uplink signal according to the determined power deviation term.

Optionally, the N power deviation items are sent by the network side device to the user equipment UE by using the high layer signaling, and the index of the power deviation term received by the UE is sent by the network side device by using downlink control signaling. To the UE.

Optionally, the receiving module is specifically configured to: receive a power control command word field sent by the network side device, where the power control command word field corresponds to a power deviation item index, or the power control command word field corresponds to a power deviation term index and a power control command word, and determining, according to the power control command word field, a power deviation term corresponding to the power control command word field from the N power deviation terms.

Optionally, the format of the downlink control signaling is any one of downlink control information DCI formats used for uplink data transmission.

Optionally, the receiving module is specifically configured to: receive a power deviation item sent by the network side device, and correspondingly, the determining module is specifically configured to: determine the uplink channel or the according to the received power deviation term The transmit power of the uplink signal.

Optionally, the power deviation term received by the receiving module is sent by the network side device to the user equipment UE by using high layer signaling.

Optionally, the uplink channel is an uplink traffic channel or an uplink control channel, and the uplink signal is an uplink reference signal.

A tenth aspect of the present application provides a network side device, including a configuration module, where the configuration module is configured to configure power deviation information for the UE, where the power deviation information is used to adjust a transmit power of the UE.

Optionally, the configuration module is specifically configured to: send N power deviation items to the UE, where N is a positive integer greater than or equal to 1, and send any one of the N power deviation items to the UE. The index of the deviation item.

Optionally, the network side device sends the N power deviation items to the UE by using high layer signaling, where the network side device sends an index of the power deviation item to the UE by using downlink control signaling.

Optionally, the configuration module is specifically configured to: send a power control command word field to the UE, where the power control command word field corresponds to a power deviation item index, or the power command word field corresponds to one power deviation item. And a power control command word.

Optionally, the format of the downlink control signaling is any one of downlink control information DCI formats used for uplink data transmission.

Optionally, the configuration module is specifically configured to: send a power deviation item to the UE.

Optionally, the network side device sends the power deviation item to the UE by using high layer signaling.

An eleventh aspect of the present application provides a UE, where the UE includes a processor, a memory, and a communication interface, where the memory is used to store an instruction, the communication interface is used to communicate with another device, and the processor is configured to execute the An instruction stored in the memory to cause the UE to perform the method provided by the first aspect of the present application.

A twelfth aspect of the present application provides a network side device, where the network side device includes a processor, a memory, and a communication interface, where the memory is used to store instructions, and the communication interface is used to communicate with other devices, and the processor uses Executing instructions stored in the memory to cause the network side device to perform the method provided by the second aspect of the present application.

The uplink power control method and apparatus provided by the application, the network side device sends multiple RACHs to the UE by using The configuration information is used to indicate the identifier information corresponding to the configuration information of the RACH used by the UE by using the scheduling message of the RACH, and the UE calculates the transmit power of the RACH according to the RACH configuration information corresponding to the identifier information, and sends the randomized power to the network side device according to the transmit power of the RACH. Access the preamble. The configuration information of each RACH corresponds to one receiving beam of the network side device or one transmitting beam of the UE, so that the network side device can dynamically adjust the transmit power of the RACH according to different receiving beams or the shaped gain variation of the transmitting beam. Therefore, the RACH transmission power can be accurately controlled, the uplink RACH access success rate can be improved, and the data transmission power efficiency and the data transmission performance can be maximized.

DRAWINGS

1 is a schematic structural diagram of a communication system to which the present application is applied;

2 is a flowchart of an uplink power control method according to Embodiment 1;

3 is a schematic diagram of a format of a preamble;

4 is a schematic structural diagram of a UE according to Embodiment 2;

FIG. 5 is a schematic structural diagram of a UE according to Embodiment 4;

6 is a schematic structural diagram of a network side device according to Embodiment 5;

7 is a flowchart of an uplink power control method provided in Embodiment 6;

8 is a schematic structural diagram of a UE provided in Embodiment 7;

9 is a schematic structural diagram of a UE provided in Embodiment 9;

FIG. 10 is a schematic structural diagram of a network side device according to Embodiment 10.

detailed description

The present application provides a power control method for a random access channel, which can be applied to an existing communication system. FIG. 1 is a schematic structural diagram of a communication system to which the present application is applicable. As shown in FIG. 1, the communication system includes a base station. And the terminal device, the number of the terminal devices may be one or more. The communication system can be a Global System of Mobile Communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a Wideband Code Division Multiple Access (WCDMA). System, Long Term Evolution (LTE) system or 5th-generation mobile communication (5th-Generation, 5G) system. Correspondingly, the base station may be a base station (Base Transceiver Station, BTS for short) in a GSM system or a CDMA system, or a base station (NodeB, NB for short) in a WCDMA system, or an evolved base station in an LTE system. The evolved NodeB (abbreviated as eNB), the access point (AP), or the relay station may be a base station or the like in the 5G system, and is not limited herein.

The terminal device may be a wireless terminal, which may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device that is connected to the wireless modem. The wireless terminal can communicate with at least one core network via a Radio Access Network (RAN). The wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a portable, pocket, handheld, computer built-in or vehicle-mounted mobile device, The wireless access network exchanges voice and/or data. A wireless terminal may also be called a Subscriber Unit, a Subscriber Station, a Mobile Station, and a Mobile Station. Station), Remote Station, Access Point, Remote Terminal, Access Terminal, User Terminal, User Equipment (UE), User Equipment (UE) Or User Agent, which is not limited here.

The method of the present application is specifically applied to a random access process. The random access process mainly includes the following steps: the UE receives a system message broadcast by the base station, and obtains a configuration of a random access channel (RACH) from the system message. information. The UE sends a random access preamble (preamble) to the base station according to the configuration information of the RACH, and the base station returns a random access response message to the UE. The UE determines the transmit power of the random preamble before sending the preamble, and the transmit power of the preamble is also called the transmit power of the RACH. The transmit power of the existing RACH can be calculated by the following formula (1):

P=min{Pmax, PL+Po, pre+deltapre+(Npre-1)dPrampup} (1)

Where P is the transmit power of the RACH, Pmax is the maximum transmit power of the UE, Po, pre is the target received power of the base station, PL is the path loss value estimated by the UE through the downlink broadcast information, and deltapre is the format correction value of the preamble. To characterize the amount of adjustment of the RACH transmit power due to the different preamble formats. Npre indicates the number of times the preamble is sent, and dPrampup indicates the power step size when the preamble is retransmitted. The target receiving power of the base station is the receiving power used by the base station to receive the preamble. The Po, pre dynamic range is [-120, -90] dBm, the resolution is 2 dB, and the possible value of dPrampup is [0, 2, 4, 6]. dB. Npre is the maximum number of transmissions of the preamble. The UE attempts to send the preamble multiple times during the access phase. The number of preambles sent by the UE cannot be greater than Npre. The UE continuously increases the transmit power of the RACH every time the preamble is retransmitted, and the UE increases the transmit power of the RACH by using dPrampup as a step size each time the preamble is retransmitted.

The base station adopts the beamforming technology when receiving the preamble sent by the UE, and may receive the preamble by using different receiving beams. The beamforming gains corresponding to different receiving beams are different, and the power control parameter sets used by different receiving beams are also different. Alternatively, the UE may also use different transmit beams to transmit the preamble when transmitting the preamble, and different beamforming gains corresponding to different transmit beams are different. However, the existing power control mechanism is based on omnidirectional transmission or based on fixed receive beam transmission. For the scenario of receiving beam variation, if the existing power control mechanism is used, the transmission power of the RACH is not accurate enough.

In order to solve the problem of the prior art, the present application provides a power control method for a random access channel, and FIG. 2 is a flowchart of an uplink power control method according to the first embodiment. As shown in FIG. 2, the method in this embodiment may be used. Includes the following steps:

Step 101: The network side device sends multiple pieces of configuration information of a random access channel (RACH) to the UE.

Correspondingly, the UE receives configuration information of multiple RACHs sent by the network side device, and the configuration information of each RACH includes one or more of the following information: a power offset value of the receive beam used by the network side device, and a random access preamble The preamble format information, the target received power of the network side device, the format correction value of the preamble, the number of times the preamble is transmitted, and the power ramping step information at the time of the preamble retransmission. The network side device may send the configuration information of the multiple RACHs through a broadcast channel, or may send the configuration information of the multiple RACHs by using a system message, where the broadcast channel may be a broadcast channel of a 5G system or a broadcast channel in an LTE system. The system message may be System Information Blocks (SIB2) in the LTE system, or may be newly defined system information in the 5G system. The network device can be a base station.

In the configuration information of the RACH, the power offset value of the receive beam used by the network side device is a new parameter added in the present application, and the power offset value of the receive beam is a real number, and the power offset values of different receive beams may be different. The power deviation value of the receiving beam is determined by the network side device according to the shaping gain variation of the receiving beam, or the power deviation value of the receiving beam is determined by the network side device according to the shaping gain variation of the UE transmitting beam. The power offset value of the receive beam is used to compensate for the deviation of the transmit power of the RACH caused by the change of the shaped gain, so that the transmit power of the RACH calculated by the UE is more accurate.

The definitions of the four parameters of the target receiving power of the network side device, the format correction value of the preamble, the number of transmissions of the preamble, and the power ramp step size of the preamble retransmission are the same as those of the prior art, and the four parameters are related to the format of the preamble. The four parameters corresponding to different formats of preamble are different.

In this embodiment, the preamble includes S cyclic prefixes (Cyclic Prefix, CP for short) and T sequences (Sequence), each cyclic prefix has a length of Tcp, and each sequence has a length of Tseq. The format information of the preamble includes the number S of cyclic prefixes and/or the number T of sequences, where S and T are integers greater than or equal to 1. S and T can be flexibly configured, and the values of S and T corresponding to preambles of different formats are different.

Optionally, the number S of the cyclic prefix and the number T of the sequence are: T is an integer multiple of S, so the format information of the preamble may include only the number S of the cyclic prefix or only the number T of the sequence. The UE obtains T from S or S from T according to the correspondence between S and T.

3 is a schematic diagram of a format of a preamble. As shown in FIG. 3, FIG. 3 includes two types of preamble formats. In the first type of preamble format, T sequences of preambles correspond to one transmit beam. The T sequences of the preamble in the two types of preamble formats correspond to multiple transmit beams. When the T sequences correspond to multiple transmit beams, the starting frequency domain resource location of each of the multiple transmit beams is related to the index of a certain sequence in the T sequences. For example, it is assumed that the time-frequency resource occupied by each transmit beam is 6 resource blocks (RBs), and the transmit beam 1 corresponds to the first sequence in the T sequences, and the initial frequency domain resource location is f1. Then, the starting frequency domain resource position of the transmitting beam i (i is greater than or equal to 2) is f1+(i-1)*6, where i is the index of the time-frequency resources occupied by the transmitting beam i in the T sequences at the same time. The network side device can configure the UE to adopt different types of preamble formats according to different scenarios.

The first type of preamble format is applicable to a scenario in which the network side device performs multiple receive beam round-robin. In this scenario, the UE repeatedly transmits the preamble multiple times based on the same transmit beam, and the network side device uses different receive beam receive each time. The preamble, the network side device determines the optimal receive beam according to the preamble received multiple times. In this type of preamble format, the number S of cyclic prefixes is equal to 1, the number of sequences T is greater than 1, and the last part is a guard interval (GP). This type of preamble format can minimize the overhead of the cyclic prefix. Since the cyclic prefix cannot be used to transmit valid data signals, minimizing the format of the cyclic prefix can improve the transmission efficiency of the preamble. In the example shown in FIG. 2, in the first type of preamble format, three sequences correspond to one transmit beam, that is, the UE repeatedly transmits the preamble three times based on the same transmit beam, and correspondingly, the network side device uses one receive beam at a time. The preamble finally determines the optimal receive beam from the three receive beams based on the received preamble 3 times.

The second type of preamble format is applicable to a scenario in which the UE performs multiple rounds of the transmit beam. In this scenario, the UE sends the preamble multiple times based on different transmit beams, and the network side device determines according to the multiple preambles received multiple times. Optimal transmit beam. Since the beamforming gains of different transmit beams are different, the length of the cyclic prefix and/or the length of the sequence of the preamble transmitted by the UE using different transmit beams may be the same, May be different. In this type of preamble format, the number of cyclic prefixes S and the number of sequences T are both greater than 1, and the last part is GP. This type of preamble format optimizes the preamble performance under different transmit beams, thereby improving the transmission efficiency of the preamble.

In the example shown in FIG. 3, the second type of preamble format includes two subtypes. In subtype 1, T (T>=1) sequences correspond to T transmit beams, for example, when T=3, 3 sequences ( Sequence 1, sequence 2, and sequence 3) correspond to three transmit beams. The UE sequentially uses three transmit beams to transmit T preambles. The lengths of the cyclic prefixes of the T preambles and/or the lengths of the sequences may be the same or different. The network side device receives the three preambles, and determines an optimal transmit beam according to the received three preambles. Subtype 2 is a combination of the first type and subtype one, three sequences correspond to three transmit beams, and each transmit beam transmits two preambles.

In this embodiment, the configuration information of each RACH corresponds to one receiving beam of the network side device. The configuration information of the RACH corresponding to different receiving beams is different. When the network side device uses different receiving beams, the UE should calculate the transmitting power of the RACH by using the RACH configuration parameter corresponding to the receiving beam.

Optionally, the configuration information of each RACH corresponds to one transmit beam of the UE. The configuration information of the RACH corresponding to different transmit beams of the UE is different. When the UE uses different transmit beams, the UE should calculate the transmit power of the RACH by using the RACH configuration information corresponding to different transmit beams configured by the network device.

Step 102: The network side device sends a scheduling message of the RACH to the UE, where the scheduling message of the RACH includes identifier information of one piece of RACH configuration information in the multiple pieces of RACH configuration information.

The UE receives the scheduling message of the RACH sent by the network side device, and the scheduling message of the RACH may be notified to the UE by the network side device through a physical layer control command, and the network side device dynamically indicates, by using the control channel command, the configuration information of the current multiple RACH used by the UE. One of the RACH configuration information.

Step 103: The UE determines configuration information of the RACH corresponding to the identifier information from the configuration information of the multiple RACHs according to the identifier information included in the scheduling message of the RACH.

Each RACH configuration information in the configuration information of the multiple RACHs has an identification information, and the UE searches for the RACH corresponding to the identification information from the configuration information of the multiple RACHs according to the identification information of the RACH configuration information notified by the physical layer control command. Configuration information.

Step 104: The UE calculates a transmit power of the RACH according to the determined configuration information of the RACH.

Hereinafter, the four parameters of the network side device's target received power, the preamble format correction value, the preamble transmission number, and the preamble retransmission power ramp step are collectively referred to as power control parameters. The configuration information of the RACH corresponding to the identification information includes the power offset value of the receiving beam used by the network side device, the format information of the random access preamble, the target receiving power of the network side device, the format correction value of the preamble, and the number of preamble transmissions. One or more of the power ramp steps when replaying with the preamble.

When the configuration information of the RACH corresponding to the identifier information does not include the power offset value of the receive beam used by the network side device, the transmit power of the RACH is calculated using the above formula (1). When the configuration information of the RACH corresponding to the identifier information includes the power offset value of the receive beam of the RACH, the transmit power of the RACH is calculated using the following formula (2):

P=min{Pmax, PL+Po, pre+deltapre+(Npre-1)dPrampup+deltaBF} (2)

Equation (2) has a power deviation value deltaBF of the receiving beam used by the network side device compared with the formula (1).

The configuration information of the RACH corresponding to the identifier information includes only the power offset of the receive beam used by the network side device. For the difference, the network side device needs to send the power control parameters corresponding to each receiving beam to the UE in other manners. The UE calculates the transmit power of the RACH according to the power deviation parameter of the receive beam used by the network side device and the power control parameter corresponding to the receive beam using the above formula (2).

When the configuration information of the RACH corresponding to the identifier information includes only the format information of the random access preamble, the UE first determines which format of the preamble to use according to the format information of the preamble, and the power control parameters corresponding to the preambles of different formats are different. Correspondingly, the network side device needs to send the power control parameters corresponding to the preambles of the respective formats to the UE by using other methods, and the UE determines, according to the format information of the preamble, the power control parameters corresponding to the preambles of the pre-acquired formats. The power control parameter corresponding to the format information of the preamble, and further calculating the transmit power of the RACH according to the power control parameter corresponding to the format information of the preamble using the above formula (1).

When the configuration information of the RACH corresponding to the identifier information includes the power offset value of the receive beam used by the network side device and the format information of the random access preamble, the UE first determines, according to the format information of the preamble, the format information of the preamble. The power control parameter is then used to calculate the transmit power of the RACH according to the power control parameter corresponding to the power offset value of the receive beam used by the network side device and the format information of the preamble.

When the RACH configuration information corresponding to the identifier information includes only one, any two, or any three parameters of the power control parameters, the remaining power control parameters except the power control parameters included in the configuration information of the RACH corresponding to the identifier information are multiple. The shared power control parameter of the receive beam, the shared power control parameter is sent to the UE by the network side device in advance, and after determining the RACH configuration information corresponding to the identifier information, the UE selects the power control parameter included in the RACH configuration information corresponding to the identifier information. The pre-acquired shared power control parameter calculates the transmit power of the RACH using the above formula (1). For example, the RACH configuration information corresponding to the identifier information includes only the target received power of the network side device, and the format correction value of the preamble, the number of transmissions of the preamble, and the power ramp step size of the preamble retransmission are shared power control parameters, and the UE according to the identifier The target received power and the shared power control parameter of the network side device included in the configuration information of the RACH corresponding to the information are used to calculate the transmit power of the RACH using the above formula (1).

When the configuration information of the RACH corresponding to the identifier information includes only the preamble transmission number and/or the power ramp step size of the preamble retransmission, the number of preamble transmissions of the RACH included in the RACH configuration information corresponding to the identifier information by the UE and/or The power ramp step size of the preamble retransmission and the pre-acquired shared power control parameter use the above formula (1) to calculate the transmit power of the RACH. When the transmit beam of the UE is switched, the network side device may reset, maintain, or increase the power ramp number parameter in the RACH configuration information.

When the configuration information of the RACH corresponding to the identifier information includes all the power control parameters, the UE calculates the transmit power of the RACH according to the formula (1) according to all the power control parameters included in the configuration information of the RACH corresponding to the identifier information.

When the configuration information of the RACH corresponding to the identifier information includes both the power offset value of the receive beam used by the network side device and the power control parameter, the network included in the RACH configuration information corresponding to the identifier information by the UE The power offset value and the power control parameter of the receive beam used by the side device, and the shared power control parameter acquired in advance, calculate the transmit power of the RACH using the above formula (2).

Step 105: The UE sends a random access preamble to the network side device according to the transmit power of the RACH.

In the method of the embodiment, the network side device sends the configuration information of the RACH to the UE, and the RACH scheduling message indicates the identifier information corresponding to the RACH configuration information used by the UE, and the UE calculates the RACH configuration information corresponding to the identifier information. The transmit power of the RACH is sent to the network side device according to the transmit power of the RACH. The machine accesses the preamble. The configuration information of each RACH corresponds to one receiving beam of the network side device or one transmitting beam of the UE, so that the network side device can perform the dynamics of the RACH transmitting power according to the different receiving beams or the shaping gain of the transmitting beam. The adjustment can accurately control the transmit power of the RACH and improve the access success rate of the uplink RACH.

4 is a schematic structural diagram of a UE according to Embodiment 2. As shown in FIG. 4, the UE in this embodiment includes a receiving module 11, a determining module 12, a calculating module 13, and a sending module 14.

The receiving module 11 is configured to receive configuration information of multiple random access channels (RACHs) sent by the network side device;

The receiving module 11 is further configured to receive a scheduling message of the RACH sent by the network side device, where the scheduling message of the RACH includes identifier information of one RACH configuration information of the multiple pieces of RACH configuration information;

The determining module 12 is configured to determine configuration information of the RACH corresponding to the identifier information from the configuration information of the multiple pieces of RACH according to the identifier information included in the scheduling message of the RACH;

The calculating module 13 is configured to calculate a transmit power of the RACH according to the RACH configuration information determined by the determining module 13;

The sending module 14 is configured to send a random access preamble to the network side device according to the transmit power of the RACH.

Optionally, the configuration information of each RACH includes one or more of the following information: a power offset value of a receive beam used by the network side device, format information of a random access preamble, and a target receive power of the network side device, where The format correction value of the preamble, the number of transmissions of the preamble, and the power ramp step information when the preamble is retransmitted.

Optionally, the configuration information of each RACH corresponds to one receiving beam of the network side device.

Optionally, the configuration information of each RACH corresponds to one transmit beam of the UE.

Optionally, the configuration information of the multiple RACHs is sent by the network side device to the UE by using a broadcast channel or system information.

Optionally, the scheduling message of the RACH is notified by the network side device to the UE by using a physical layer control command.

Optionally, the preamble includes S cyclic prefixes and T sequences, and the format information of the preamble includes the number S of the cyclic prefix and/or the number T of the sequence, where S and T Is an integer greater than or equal to 1.

Optionally, the number S of the cyclic prefix and the number T of the sequence satisfy: T is an integer multiple of S.

Optionally, when the transmit beam of the UE is switched, the number of power ramps included in the configuration information of the RACH remains unchanged.

The third embodiment provides a network side device. The network side device in this embodiment includes a sending module, where the sending module is configured to send configuration information of multiple random access channel RACHs to the UE, and send a scheduling message of the RACH to the UE. The scheduling message of the RACH includes identifier information of one piece of RACH configuration information in the configuration information of the multiple pieces of RACH.

Optionally, the configuration information of each RACH includes one or more of the following information: a power deviation value of a receiving beam used by the network side device, format information of a random access preamble, and receiving by the network side device. Power, a format correction value of the preamble, a number of transmissions of the preamble, and power ramp step information when the preamble is retransmitted.

Optionally, the configuration information of each RACH corresponds to one receiving beam of the network side device.

Optionally, the configuration information of each RACH corresponds to one transmit beam of the UE.

Optionally, the configuration information of the multiple RACHs is sent by the network side device to the UE by using a broadcast channel or system information.

Optionally, the scheduling message of the RACH is notified by the network side device to the UE by using a physical layer control command.

Optionally, the preamble includes S cyclic prefixes and T sequences, and the format information of the preamble includes the number S of the cyclic prefix and/or the number T of the sequence, where S and T Is an integer greater than or equal to 1.

Optionally, the number S of the cyclic prefix and the number T of the sequence satisfy: T is an integer multiple of S.

Optionally, when the transmit beam of the UE is switched, the number of power ramps included in the configuration information of the RACH remains unchanged.

5 is a schematic structural diagram of a UE according to Embodiment 4. As shown in FIG. 5, the UE provided in this embodiment includes a processor 21, a memory 22, and a communication interface 23. The memory 22 and the communication interface 23 are connected to the processor 21 through a bus. And communicating, the memory 22 is for storing instructions, the communication interface 23 is for communicating with other devices, and the processor 21 is configured to execute instructions stored in the memory 22 to enable the UE to execute the above embodiment. A method performed by a UE. The communication interface 23 can be used for both transmitting data to the network side device and receiving data transmitted by the network side device. The communication interface 23 can include a receiver and a transmitter.

6 is a schematic structural diagram of a network side device according to Embodiment 5. As shown in FIG. 6, the network side device provided in this embodiment includes a processor 31, a memory 32, and a communication interface 33. The memory 32 and the communication interface 33 are connected through a bus. The processor 31 is connected and in communication, the memory 32 is for storing instructions, the communication interface 33 is for communicating with other devices, and the processor 31 is configured to execute instructions stored in the memory 32 to cause the network The side device performs the method performed by the network side device in the first embodiment. The communication interface 33 can be used for both transmitting data to the UE and for receiving data transmitted by the UE. The communication interface 33 can include a receiver and a transmitter.

FIG. 7 is a flowchart of an uplink power control method according to Embodiment 6. As shown in FIG. 7, the method provided in this embodiment includes the following steps:

Step 201: The network side device configures power deviation information for the UE, where the power deviation information is used to adjust the transmit power of the UE.

Step 202: The UE receives power deviation information configured by the network side device.

The power deviation information is determined by the network side device according to the beamforming gain change of the UE or the network side device. Optionally, before the step 201, the network side device generates the beam shaping gain according to the UE side or the network device side. The power deviation information. Each power deviation term corresponds to a compensation term for a beamforming gain. The beamforming gain variation may be caused by a change in the number of antenna ports of the shaped beam, or may be caused by a change in the direction of a certain shaped beam. There are other reasons for the current beamforming gain variation. When the number of antenna ports that generate the shaped beam changes from T (T>=2) to T/2, the power deviation term caused by the gain variation of the beamforming is 3 dB (in this case, the shaped beam is used to generate the shaped beam). The number of antenna ports is changed from T to T/2, resulting in a beamforming gain variation of 3 dB). When the shaped beam at the transmitting end or the receiving end is changed from beam one (such as a beam with a 45-degree phase) to beam two (such as a beam with a phase of 60 degrees), the power deviation caused by beamforming changes The term can be 0.8 dB (the change of the shaping gain caused by the change of the direction of the shaped beam), wherein the beamforming can refer to the beamforming at the transmitting end or the beamforming at the receiving end, which is not limited herein.

In the first implementation manner, the network side device first sends N power deviation items to the UE, and the N power deviation items may be represented as {AG1, AG2, . . . , AGN}, where AGi is any real number. Network side equipment can pass high layer signaling N power deviation terms are sent to the UE. The network side device also establishes an index for each power deviation term, and the N power deviation terms correspond to N indexes, and the index of the power deviation term can be represented by several bits, for example, when the value of N is 4, the power The index of the deviation term can be represented by 2 bits, and the indexes of the 4 power deviation terms can be represented by 00, 01, 10, and 11. Subsequently, the network side device sends an index of any one of the N power deviation terms to the UE. Specifically, before the index of the power deviation term is transmitted, the network side device determines, according to the change of the beamforming gain, the power deviation term corresponding to the current beamforming gain change from the N power deviation terms, and the current beam shaping gain. The index of the power deviation term corresponding to the change is sent to the UE. The network side device sends an index of the power deviation term to the UE by using downlink control signaling. The UE receives the N power deviation terms and an index of any power deviation term sent by the network side device.

It should be understood that the set size N of the value of the power deviation term is usually a fixed value to ensure that the number of control signaling bits corresponding to the index of the power deviation term is a fixed value.

The network side device may specifically send an index of the power deviation term by using the power control command word field in the downlink control signaling. The network side device sends a power control command word field to the UE, where the power control command word field corresponds to a power deviation term index, or the power command word field corresponds to one power deviation term and one power control command word. The downlink control signaling is any one of Downlink Control Information (DCI) format for uplink data transmission, for example, DCI format in a Long Term Evolution (LTE) system. 0/3/3A/4.

The value set corresponding to the power deviation term should include at least one value of 0 dB, and the value of 0 dB is used to indicate that the UE does not perform power adjustment of the uplink channel or the uplink signal caused by the beamforming gain change.

Assume that the value of the power control command word in the power control command field is as shown in Table 1. The cumulative form and the absolute form are two indication modes of the power control command word.

Table I

Assume that the set of power deviation terms configured by the network side device is {0.2, 0.6, 0.8, 1.2}. If the index of the power deviation term and the power command word are separately indicated, the value of the power control command word corresponding to the power deviation term is as follows. Second:

Table II

If the above-mentioned power control command word and the power deviation term are combined and represented by a power control command word field, the number of bits of the power control command word field is 4, and the value of the power control command word field is as shown in Table 3:

Table 3

In the second implementation manner, the network side device sends a power deviation term to the UE. Specifically, when the beamforming gain changes, the network side device determines the power deviation corresponding to the current beamforming gain change from the N power deviation terms. And transmitting an index of the power deviation term or the power deviation term to the UE, where the UE receives the power deviation term sent by the network side device. The network side device may send the power deviation term or the index of the power deviation term to the UE through high layer signaling.

Step 203: The UE determines, according to the power deviation information, a transmit power of the uplink channel or the uplink signal.

First, the UE determines a power deviation term according to the power deviation information, and then calculates a transmission power of the uplink channel or the uplink signal according to the power deviation term. When the power deviation information is an index of the power deviation term, the UE determines a power deviation term corresponding to the received power deviation term index from the N power deviation terms received in advance according to the power deviation term. When the power deviation information is a power deviation term, the UE directly uses the power deviation term to calculate the transmission power of the uplink channel or the uplink signal. The uplink channel is an uplink traffic channel or an uplink control channel, and the uplink traffic channel may be a physical uplink shared channel (PUSCH), and the uplink control signal is used. The track can be a Physical Uplink Control Channel (PUCCH). The uplink signal may be an uplink reference signal, and the uplink reference signal may be a Sounding Reference Signal (SRS). In addition, the uplink channel or the uplink signal may be any other than PUSCH, PUCCH or SRS. Upstream channel or signal.

In this embodiment, the transmit power of the PUSCH considering the power deviation term caused by the beamforming gain variation can be expressed as:

Where P _CMAX,c (i) is the total transmit power of the UE on the carrier c of the primary serving cell;

M _PUSCH,c (i) is the number of PUSCH scheduling resource blocks, and the unit is PRB;

P _{O_PUSCH,c} (j) includes P _{O_NOMINAL_PUSCH,c} (j) and P _{O_UE_PUSCH,c} (j), which are used to characterize the target received power of the UE, and are semi-statically configured by higher layer RRC signaling, where P _{O_NOMINAL_PUSCH,c} ( j) is a cell-specific parameter, occupies 8 bits, and is semi-statically configured by Radio Resource Control (RRC) signaling;

_{c c} (j) is a path loss compensation factor, a cell-specific parameter, occupying 3 bits, and is semi-statically configured by higher layer RRC signaling;

PL _c is a path loss measurement value of the UE based on Reference Signal Receiving Power (RSRP);

是对不同的调制编码方式的功率调整值，小区特定参数，由高层RRC信令半静态配置；

Is a power adjustment value for different modulation and coding modes, and cell-specific parameters are semi-statically configured by higher layer RRC signaling;

f _c (i) is the closed-loop power adjustment amount, which is the feedback value quantized by the receiving end according to the receiving/measuring error;

Δ _AG (i) is the power deviation term due to the change in beamforming gain.

Where Δ _AG (i)+f _c (i) corresponds to the above-mentioned power control command word field. Δ _AG (i) and f _c (i) in the field of the power control command can be combined into one item or two items, which are not limited here.

Further, the transmission power of the PUSCH may be expressed in any other form, which is not limited herein.

In this embodiment, the transmit power of the PUCCH considering the power deviation term caused by the beamforming gain variation can be expressed as:

Wherein, P _{0_PUCCH} indicates the target received power of the UE, and is semi-statically configured by the upper layer RRC signaling;

Δ _{F_PUCCH} (F) is a power control adjustment parameter related to the PUCCH format, which is determined by high-level configuration parameters;

h(n _CQI , n _HARQ , n _SR ) is a variable related to PUCCH transmission information;

Δ _TxD (F') is a parameter related to the number of antenna ports transmitting PUCCH and the PUCCH transmission mode;

g(i) is the closed-loop power control adjustment value, which is determined by the power control command word sent by the network device.

Δ _AG (i) is the power deviation term due to the change in beamforming gain.

Where Δ _AG (i)+g(i) corresponds to the above-mentioned power control command word field. Δ _AG (i) and g(i) in the field of the power control command can be combined into one item or two items, which are not limited here.

Further, the transmission power of the PUCCH may be expressed in any other form, which is not limited herein.

In this embodiment, the transmit power of the SRS that measures the power deviation term due to the beamforming gain variation can be expressed as:

P _SRS,c (i)=min{P _CMAX,c (i),P _{SRS_OFFSET,c} (m)+10log ₁₀ (M _SRS,c )+P _{O_PUSCH,c} (j)+α _c (j)·PL _c +f _c (i)+Δ _AG (i)}

Wherein, P _{SRS_OFFSET,c} (m) represents an offset value of the PUSCH transmit power and the SRS transmit power caused by different modulation and coding modes;

M _SRS,c represents the SRS transmission bandwidth of the UE, and other parameters are the same as the meanings and values of the corresponding parameters in the PUSCH formula.

Where Δ _AG (i)+f _c (i) corresponds to the above-mentioned power control command word field. Δ _AG (i) and f _c (i) in the field of the power control command can be combined into one item or two items, which are not limited here.

Further, the transmission power of the PUSCH may be expressed in any other form, which is not limited herein.

It should be noted that the power control formulas for the PUSCH, the PUCCH, and the SRS are only an example. Alternatively, the power control formula may be any other form of power control formula, which is not limited in this embodiment.

It should be noted that the uplink power control scheme in this embodiment is applicable to both a single-carrier scenario and a multi-carrier scenario, such as a dual connectivity (DC) or carrier aggregation (CA) scenario per cell or The transmit power setting of the uplink channel or uplink signal on each base station.

In this embodiment, the network side device configures power deviation information for the UE, where the power deviation information is used to adjust the transmit power of the UE, where the power offset information is determined by the network side device according to the beamforming gain change of the UE or the network side device. The UE receives the power deviation information sent by the network device, and determines the transmit power of the uplink channel or the uplink signal according to the power deviation information. Since the power deviation caused by the beamforming gain variation is determined when determining the transmission power of the uplink channel or the uplink channel, the calculated transmission power is more accurate.

FIG. 8 is a schematic structural diagram of a UE according to Embodiment 7. As shown in FIG. 8, the UE provided in this embodiment includes:

The receiving module 41 is configured to receive power deviation information configured by the network side device, where the power deviation information is used to adjust a transmit power of the UE;

The determining module 42 is configured to determine, according to the power deviation information, a transmit power of an uplink channel or an uplink signal.

The receiving module 41 is specifically configured to: receive N power deviation items sent by the network side device, where N is a positive integer greater than or equal to 1, and receive the N power deviation items sent by the network side device. An index of any power deviation term. Correspondingly, the determining module is specifically configured to: determine, according to the received index of the power deviation term, a power deviation term corresponding to the index from the N power deviation terms, and determine, according to the determined power deviation term The uplink channel or the transmit power of the uplink signal.

Optionally, the N power deviation items are sent by the network side device to the UE by using the high layer signaling; the index of the power deviation term received by the UE is sent by the network side device by using downlink control signaling. Said UE. Correspondingly, the receiving module is specifically configured to: receive a power control command word field sent by the network side device, where the power control command word field corresponds to a power deviation item index, or the power control command word field corresponds to one The power deviation term index and a power control command word determine a power deviation term corresponding to the power control command word field from the N power deviation terms according to the power control command word field.

Optionally, the format of the downlink control signaling is a downlink control information DCI format used for uplink data transmission. Any of them.

Optionally, the receiving module 41 is specifically configured to: receive a power deviation item sent by the network side device, where the determining module is specifically configured to: determine the uplink channel or the uplink signal according to the received power deviation term Transmit power.

Optionally, the power deviation term received by the receiving module 41 is sent by the network side device to the UE by using high layer signaling.

Optionally, the uplink channel is an uplink traffic channel or an uplink control channel, and the uplink signal is an uplink reference signal.

The UE provided in this embodiment may be used to perform the steps performed by the UE in the sixth embodiment, and the specific implementation manners and technical effects are similar, and details are not described herein again.

Embodiment 8 provides a schematic structural diagram of a network side device. The network side device provided in this embodiment includes a configuration module, where the configuration module is configured to configure power deviation information for the UE, where the power deviation information is used for transmitting power to the UE. Make adjustments.

Optionally, the configuration module is specifically configured to: send N power deviation items to the UE, where N is a positive integer greater than or equal to 1, and send any one of the N power deviation items to the UE. The index of the power deviation term.

Optionally, the network side device sends the N power deviation items to the UE by using high layer signaling, where the network side device sends an index of the power deviation item to the UE by using downlink control signaling. Correspondingly, the configuration module is specifically configured to: send a power control command word field to the UE, where the power control command word field corresponds to a power deviation item index, or the power command word field corresponds to a power deviation term and A power control command word.

Optionally, the format of the downlink control signaling is any one of downlink control information DCI formats used for uplink data transmission.

Optionally, the configuration module is specifically configured to: send a power deviation item to the UE.

Optionally, the network side device sends the power deviation item to the UE by using high layer signaling.

The network side device in this embodiment may be used to perform the method in the first embodiment. The specific implementation manners and technical effects are similar, and details are not described herein again.

FIG. 9 is a schematic structural diagram of a UE according to Embodiment 9. As shown in FIG. 9, the UE provided in this embodiment includes a processor 51, a memory 52, and a communication interface 53, and the memory 52 and the communication interface 53 are connected to the processor 51 through a bus. And communicating, the memory 52 is for storing instructions, the communication interface 53 is for communicating with other devices, and the processor 51 is configured to execute instructions stored in the memory 52 to enable the UE to execute the above embodiment. The method provided by the UE in the method provided by 6. The communication interface 53 can be used for both transmitting data to the network side device and receiving data transmitted by the network side device. The communication interface 53 can include a receiver and a transmitter.

10 is a schematic structural diagram of a network side device according to Embodiment 10. As shown in FIG. 10, the network side device provided in this embodiment includes a processor 61, a memory 62, and a communication interface 63. The memory 62 and the communication interface 63 are connected through a bus. The processor 61 is connected and in communication, the memory 62 is for storing instructions, the communication interface 63 is for communicating with other devices, and the processor 61 is configured to execute instructions stored in the memory 62 to cause the network The side device performs the steps performed by the network side device in the method provided in Embodiment 6 above. The communication interface 63 can be used for both transmitting data to the UE and for receiving data transmitted by the UE. The communication interface 63 can include a receiver and a transmitter.

It can be understood that the processor used by the network side device or the UE in the present application may be a central processing unit (CPU), a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), and a field programmable gate array (FPGA). Or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.

The bus described in this application may be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, the bus in the drawings of the present application is not limited to only one bus or one type of bus.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit 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 Can be integrated into 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, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, 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 purpose of the solution of the embodiment.

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 hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The above software functional unit is stored in a storage medium, and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to perform the embodiments of the present application. Part of the steps of the method. The foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (English: Read-Only Memory, abbreviated as: ROM), a random access memory (English: Random Access Memory, abbreviated as: RAM), a magnetic disk or an optical disk, and the like. A variety of media that can store program code.

Claims (66)

A power control method for a random access channel, comprising: The user equipment UE receives configuration information of multiple random access channel RACHs sent by the network side device; Receiving, by the UE, a scheduling message of the RACH sent by the network side device, where the scheduling message of the RACH includes identifier information of one piece of RACH configuration information in the configuration information of the multiple pieces of RACH; Determining, by the UE, the configuration information of the RACH corresponding to the identifier information from the configuration information of the multiple RACHs according to the identifier information included in the scheduling message of the RACH; The UE calculates a transmit power of the RACH according to the determined configuration information of the RACH, and sends a random access preamble to the network side device according to the transmit power of the RACH. The method according to claim 1, wherein the configuration information of each RACH comprises one or more of the following information: a power offset value of a receive beam used by the network side device, and a format of a random access preamble. Information, a target received power of the network side device, a format correction value of the preamble, a number of transmissions of the preamble, and power ramp step information when the preamble is retransmitted. The method according to claim 1, wherein the configuration information of each RACH corresponds to one receiving beam of the network side device. The method according to claim 1, wherein the configuration information of each RACH corresponds to one transmit beam of the UE. The method according to any one of claims 1-3, wherein the configuration information of the multiple RACHs is sent by the network side device to the UE by using a broadcast channel or system information. The method according to any one of claims 1-3, wherein the scheduling message of the RACH is notified to the UE by the network side device by using a physical layer control command. The method according to claim 2, wherein the preamble comprises S cyclic prefixes and T sequences, and format information of the preamble includes the number S of the cyclic prefix and or a sequence of the sequence The number T, wherein S and T are integers greater than or equal to 1. The method according to claim 7, wherein the number S of cyclic prefixes and the number T of the sequences satisfy: T is an integer multiple of S. The method according to claim 1, wherein when the transmit beam of the UE is switched, the number of power ramps included in the configuration information of the RACH remains unchanged. A power control method for a random access channel, comprising: The network side device sends configuration information of multiple random access channels RACH to the user equipment UE; The network side device sends a scheduling message of the RACH to the UE, where the scheduling message of the RACH includes identifier information of one piece of RACH configuration information in the configuration information of the multiple pieces of RACH. The method according to claim 10, wherein the configuration information of each RACH comprises one or more of the following: a power offset value of a receive beam used by the network side device, and a format of a random access preamble. Information, a target received power of the network side device, a format correction value of the preamble, a number of transmissions of the preamble, and power ramp step information when the preamble is retransmitted. The method according to claim 10, wherein the configuration information of each RACH corresponds to one receiving beam of the network side device. The method according to claim 10, wherein the configuration information of each RACH corresponds to said One transmit beam of the UE. The method according to any one of claims 10 to 13, wherein the configuration information of the multiple RACHs is sent by the network side device to the UE through a broadcast channel or system information. The method according to any one of claims 10 to 13, wherein the scheduling message of the RACH is notified to the UE by the network side device by using a physical layer control command. The method according to claim 11, wherein the preamble comprises S cyclic prefixes and T sequences, and format information of the preamble includes the number S of the cyclic prefix and/or the sequence The number T, where S and T are integers greater than or equal to 1. The method according to claim 16, wherein the number S of the cyclic prefix and the number T of the sequences satisfy: T is an integer multiple of S. The method according to claim 10, wherein when the transmit beam of the UE is switched, the number of power ramps included in the configuration information of the RACH remains unchanged. A user equipment (UE), comprising: a receiving module, configured to receive configuration information of multiple random access channel RACHs sent by the network side device; The receiving module is further configured to receive a scheduling message of the RACH sent by the network side device, where the scheduling message of the RACH includes identifier information of one RACH configuration information of the multiple pieces of RACH configuration information; a determining module, configured to determine configuration information of the RACH corresponding to the identifier information from the configuration information of the multiple pieces of RACH according to the identifier information included in the scheduling message of the RACH; a calculation module, configured to calculate a transmit power of the RACH according to the determined RACH configuration information; And a sending module, configured to send a random access preamble to the network side device according to the transmit power of the RACH. The UE according to claim 19, wherein the configuration information of each RACH includes one or more of the following information: a power offset value of a receive beam used by the network side device, and format information of a random access preamble code. And a target received power of the network side device, a format correction value of the preamble, a number of times of sending the preamble, and power stepping step information when the preamble is retransmitted. The UE according to claim 19, wherein the configuration information of each RACH corresponds to one receiving beam of the network side device. The UE according to claim 19, wherein the configuration information of each RACH corresponds to one transmit beam of the UE. The UE according to any one of claims 19 to 22, wherein the configuration information of the multiple RACHs is sent by the network side device to the UE by using a broadcast channel or system information. The UE according to any one of claims 19 to 22, wherein the scheduling message of the RACH is notified to the UE by the network side device by using a physical layer control command. The UE according to claim 19, wherein the preamble comprises S cyclic prefixes and T sequences, and format information of the preamble includes the number S of the cyclic prefix and/or the sequence The number T, where S and T are integers greater than or equal to 1. The UE according to claim 25, wherein the number S of cyclic prefixes and the number T of the sequences satisfy: T is an integer multiple of S. The UE according to claim 19, wherein when the transmit beam of the UE is switched, the number of power ramps included in the configuration information of the RACH remains unchanged. A network side device, comprising: a sending module, configured to send, to the user equipment UE, configuration information of multiple random access channel RACHs; The sending module is further configured to send, to the UE, a scheduling message of a RACH, where the scheduling message of the RACH includes identifier information of one piece of RACH configuration information in the configuration information of the multiple pieces of RACH. The network side device according to claim 28, wherein the configuration information of each RACH includes one or more of the following information: a power offset value of the receive beam used by the network side device, and a random access preamble The format information, the received power of the network side device, the format correction value of the preamble, the number of times the preamble is transmitted, and the power ramp step information when the preamble is retransmitted. The network side device according to claim 28, wherein the configuration information of each RACH corresponds to one receiving beam of the network side device. The network side device according to claim 28, wherein the configuration information of each RACH corresponds to one transmit beam of the UE. The network side device according to any one of claims 28 to 31, wherein the configuration information of the multiple RACHs is sent by the network side device to the UE by using a broadcast channel or system information. The network side device according to any one of claims 28 to 31, wherein the scheduling message of the RACH is notified to the UE by the network side device by using a physical layer control command. The network side device according to claim 29, wherein the preamble comprises S cyclic prefixes and T sequences, and format information of the preamble includes the number S of the cyclic prefix and/or the The number T of sequences, where S and T are integers greater than or equal to one. The network side device according to claim 34, wherein the number S of cyclic prefixes and the number T of the sequences satisfy: T is an integer multiple of S. The network side device according to claim 28, wherein when the transmission beam of the UE is switched, the number of power ramps included in the configuration information of the RACH remains unchanged. An uplink power control method, comprising: The user equipment UE receives the power deviation information configured by the network side device, where the power deviation information is used to adjust the transmit power of the UE; The UE determines a transmit power of an uplink channel or an uplink signal according to the power deviation information. The method according to claim 37, wherein the receiving, by the UE, the power deviation information of the network side device configuration comprises: Receiving, by the UE, N power deviation items sent by the network side device, where N is a positive integer greater than or equal to 1; Receiving, by the UE, an index of any one of the N power deviation terms sent by the network side device; Determining, by the UE, the transmit power of the uplink channel or the uplink signal according to the power deviation information, including: Determining, by the UE, a power deviation term corresponding to the index from the N power deviation items according to the received index of the power deviation term; The UE determines a transmit power of the uplink channel or the uplink signal according to the determined power deviation term. The method according to claim 38, wherein the N power deviation items are sent by the network side device to the UE through high layer signaling; The index of the power deviation term received by the UE is sent by the network side device by using downlink control signaling Send to the UE. The method according to claim 39, wherein the receiving, by the UE, an index of any one of the N power deviation terms sent by the network side device comprises: Receiving, by the UE, a power control command word field sent by the network side device, where the power control command word field corresponds to a power deviation item index, or the power control command word field corresponds to a power deviation item index and a power control Command word; Determining, by the UE, a power deviation term corresponding to the power control command word field from the N power deviation terms according to the power control command word field. The method according to claim 39 or 40, wherein the format of the downlink control signaling is any one of downlink control information DCI formats for uplink data transmission. The method according to claim 37, wherein the receiving, by the UE, the power deviation information of the network side device configuration comprises: Receiving, by the UE, a power deviation term sent by the network side device; Determining, by the UE, the transmit power of the uplink channel or the uplink signal according to the power deviation information, including: The UE determines a transmit power of the uplink channel or the uplink signal according to the received power deviation term. The method according to claim 42, wherein the power deviation term received by the UE is sent by the network side device to the UE by using high layer signaling. The method according to any one of claims 37-43, wherein the uplink channel is an uplink traffic channel or an uplink control channel, and the uplink signal is an uplink reference signal. An uplink power control method, comprising: The network side device configures power deviation information for the user equipment UE, where the power deviation information is used to adjust the transmit power of the UE. The method according to claim 45, wherein the network side device configures power deviation information for the user equipment UE, including: The network side device sends N power deviation items to the UE, where N is a positive integer greater than or equal to 1; The network side device sends an index of any one of the N power deviation terms to the UE. The method according to claim 46, wherein the network side device sends the N power deviation items to the UE by using high layer signaling; The network side device sends an index of the power deviation term to the UE by using downlink control signaling. The method according to claim 47, wherein the network side device sends an index of any one of the N power deviation terms to the UE, including: The network side device sends a power control command word field to the UE, where the power control command word field corresponds to a power deviation item index, or the power command word field corresponds to one power deviation term and one power control command word. The method according to claim 47 or 48, wherein the format of the downlink control signaling is any one of downlink control information DCI formats for uplink data transmission. The method according to claim 45, wherein the network side device configures power deviation information for the user equipment UE, including: The network side device sends a power deviation term to the UE. The method according to claim 50, wherein the network side device is addressed by higher layer signaling The UE transmits the power deviation term. A user equipment (UE), comprising: a receiving module, configured to receive power deviation information configured by the network side device, where the power deviation information is used to adjust a transmit power of the UE; And a determining module, configured to determine, according to the power deviation information, a transmit power of an uplink channel or an uplink signal. The UE according to claim 52, wherein the receiving module is specifically configured to: Receiving N power deviation items sent by the network side device, where N is a positive integer greater than or equal to 1; Receiving an index of any one of the N power deviation terms sent by the network side device; The determining module is specifically configured to: Determining, according to the received index of the power deviation term, a power deviation term corresponding to the index from the N power deviation terms; Determining a transmit power of the uplink channel or the uplink signal according to the determined power deviation term. The UE according to claim 53, wherein the N power deviation items are sent by the network side device to the user equipment UE through high layer signaling; The index of the power deviation term received by the UE is sent by the network side device to the UE by using downlink control signaling. The UE according to claim 54, wherein the receiving module is specifically configured to: Receiving a power control command word field sent by the network side device, where the power control command word field corresponds to a power deviation item index, or the power control command word field corresponds to a power deviation item index and a power control command word; Determining, according to the power control command word field, a power deviation term corresponding to the power control command word field from the N power deviation terms. The UE according to claim 54 or 55, wherein the format of the downlink control signaling is any one of downlink control information DCI formats for uplink data transmission. The UE according to claim 52, wherein the receiving module is specifically configured to: receive a power deviation term sent by the network side device; The determining module is specifically configured to: determine, according to the received power deviation term, a transmit power of the uplink channel or the uplink signal. The UE according to claim 57, wherein the power deviation term received by the receiving module is sent by the network side device to the user equipment UE by using high layer signaling. The UE according to any one of claims 52-58, wherein the uplink channel is an uplink traffic channel or an uplink control channel, and the uplink signal is an uplink reference signal. A network side device, comprising: The configuration module is configured to configure power deviation information for the user equipment UE, where the power deviation information is used to adjust the transmit power of the UE. The device according to claim 60, wherein the configuration module is specifically configured to: Transmitting N power deviation terms to the UE, where N is a positive integer greater than or equal to 1; An index of any one of the N power deviation terms is sent to the UE. The device according to claim 61, wherein the network side device sends the N power deviation items to the UE by using high layer signaling; The network side device sends an index of the power deviation term to the UE by using downlink control signaling. The device according to claim 62, wherein the configuration module is specifically configured to: Sending a power control command word field to the UE, where the power control command word field corresponds to a power deviation term index, or the power command word field corresponds to a power deviation term and a power control command word. The device according to claim 62 or 63, wherein the format of the downlink control signaling is any one of downlink control information DCI formats for uplink data transmission. The device according to claim 60, wherein the configuration module is specifically configured to: send a power deviation term to the UE. The device according to claim 62, wherein the network side device sends the power deviation term to the UE by using high layer signaling.

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