WO2021043006A1

WO2021043006A1 - Power control method, apparatus and system

Info

Publication number: WO2021043006A1
Application number: PCT/CN2020/110395
Authority: WO
Inventors: 姚珂; 蒋创新; 李儒岳; 高波; 潘煜; 鲁照华
Original assignee: 中兴通讯股份有限公司
Priority date: 2019-09-03
Filing date: 2020-08-21
Publication date: 2021-03-11
Also published as: CN110536399A

Abstract

Disclosed are a power control method, apparatus and system. The power control method is applied to a first communication node, and comprises: determining Y pieces of spatial parameter information associated with uplink transmission; and determining, according to power control parameters associated with the Y pieces of spatial parameter information, transmission powers of X repeated transmissions of the uplink transmission, both X and Y being integers greater than or equal to 1.

Description

Power control method, device and system

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office with an application number of 201910828954.4 on September 3, 2019. The entire content of this application is incorporated into this application by reference.

Technical field

This application relates to the field of wireless communication networks, for example, to a power control method, device, and system.

Background technique

One of the key features of the fifth generation mobile communication system (5th Generation, 5G) is to support high frequency bands. The high frequency band has abundant frequency domain resources, but there is a problem that the wireless signal attenuates quickly and the coverage is limited.

Sending signals through beamforming can concentrate energy in a relatively small space, thereby improving the coverage of high-frequency signals. In addition, 5G New Radio (NR) technology also needs to support different types of application scenarios. In some scenarios, such as power-constrained scenarios or scenarios with extremely high signal quality requirements, repeated transmission is also an enhancement technology of NR that needs to be supported. Characteristics.

Repeated transmission mainly refers to sending the same signal multiple times. The transmission parameters of multiple transmissions may be the same or different. When the transmission parameters of multiple repeated transmissions are different, how to determine the beam used for different repeated transmissions and how to determine the transmission power is urgent solved problem.

Summary of the invention

The present application provides a power control method, device, and system, which are used to implement independent beam indications for each transmission in repeated transmissions sent in a beam diversity manner and to implement flexible power control.

An embodiment of the present application provides a power control method applied to a first communication node, including:

Determine Y spatial parameter information associated with uplink transmission;

According to the power control parameters associated with the Y spatial parameter information, the transmit power of the X repeated transmissions of the uplink transmission is determined, where X and Y are both integers greater than or equal to 1.

An embodiment of the present application also provides a power control method applied to a second communication node, including:

Send Y spatial parameter information associated with the uplink transmission to the first communication node, and the power control parameters associated with the Y spatial parameter information are used to enable the first communication node to determine the transmission power of X repeated transmissions of the uplink transmission, where X and Y is an integer greater than or equal to 1.

An embodiment of the present application also provides a power control device, which is provided in a first communication node, and includes:

The parameter determination module is configured to determine Y spatial parameter information associated with uplink transmission;

The power control module is configured to determine the transmission power of X repeated transmissions of the uplink transmission according to the power control parameters associated with the Y spatial parameter information, where X and Y are both integers greater than or equal to 1.

An embodiment of the present application also provides a power control device, which is provided in a second communication node, and includes:

The parameter sending module is configured to send Y spatial parameter information associated with uplink transmission to the first communication node, and the power control parameters associated with the Y spatial parameter information are used to enable the first communication node to determine the sending of X repeated transmissions of the uplink transmission Power, where X and Y are both integers greater than or equal to 1.

An embodiment of the present application also provides a power control system, where the power control system includes a first communication node and a second communication node;

The first communication node includes a power control device provided in the first communication node;

The second communication node includes a power control device provided in the second communication node.

Description of the drawings

Figure 1 is a schematic diagram of the beam relationship between a base station and a UE;

Figure 2 is a schematic diagram of the beam relationship between the base station and the UE after training;

Fig. 3 is a schematic diagram of a base station and a UE selecting beams for transmission in beams after training;

FIG. 4 is a flowchart of a power control method provided by an embodiment;

Figure 5 shows the MAC CE of the PUCCH spatial relationship activation/deactivation;

FIG. 6 is a flowchart of another power control method provided by an embodiment;

FIG. 7 is a flowchart of another power control method provided by an embodiment;

FIG. 8 is a schematic structural diagram of a power control device provided by an embodiment;

FIG. 9 is a schematic structural diagram of another power control device provided by an embodiment;

FIG. 10 is a schematic structural diagram of a power control system provided by an embodiment;

FIG. 11 is a schematic structural diagram of a terminal provided by an embodiment;

Fig. 12 is a schematic structural diagram of a base station provided by an embodiment.

detailed description

Hereinafter, embodiments of the present application will be described with reference to the drawings.

In some scenarios, such as power-constrained scenarios, or scenarios that require extremely high signal quality, such as Ultra Reliable and Low Latency Communication (URLLC), Massive Machine Type of Communication, mMTC), repeated transmission is very necessary.

Repeated transmission mainly refers to sending the same source signal multiple times. The transmission parameters for sending the same source signal multiple times may be the same or different. The transmission parameters include at least one of the following: time domain resource parameters, frequency domain resource parameters, and space domain resource parameters. The spatial resources include at least one of multiple-input multiple-output (MIMO) transmission related parameters and beam related parameters. When the frequency domain resource parameters that are repeatedly sent for multiple times are different, the frequency domain diversity gain can be obtained by repeatedly sending multiple times. When the beam parameters of multiple transmissions are different, the beam diversity gain can be obtained by multiple transmissions.

The beam can be a resource (for example, a spatial filter at the transmitting end, a spatial filter at the receiving end, precoding at the transmitting end, precoding at the receiving end, antenna port, antenna weight vector, antenna weight matrix, etc.), and the beam or beam sequence number can be replaced It is the resource index (for example, reference signal resource index, spatial relation index). Because the beam can be bound to some time-frequency code resources for transmission, the beam can also be a transmission (sending/receiving) mode; the transmission mode can include space division multiplexing, frequency domain/time domain diversity, and so on. In addition, the base station, that is, the base station, can configure quasi co-location for the two reference signals, and notify the user, that is, the terminal (or called User Equipment (UE)) to describe the channel Feature hypothesis. The parameters involved in quasi co-location include at least: Doppler spread, Doppler shift, delay spread, average delay, average gain and spatial parameters. The spatial parameters may include spatial reception parameters, such as the angle of arrival, the spatial correlation of the received beam, the average delay, and the correlation of the time-frequency channel response (including phase information).

Reference signals include at least one of the following: Channel State Information Reference Signal (CSI-RS), Channel State Information Interference Measurement Signal (CSI-IM), Demodulation Reference Signal (Demodulation) Reference Signal, DMRS), Downlink Demodulation Reference Signal (DL DMRS), Uplink Demodulation Reference Signal (UL DMRS), Channel Sounding Reference Signal (Sounding Reference Signal, SRS), phase tracking Reference signal (Phase-tracking reference signals, PTRS), random access channel signal (Random Access Channel, RACH), synchronization signal (Synchronization Signal, SS), synchronization signal block (Synchronization Signal block, SS block, SSB), master synchronization Signal (Primary Synchronization Signal, PSS), Secondary Synchronization Signal (Secondary Synchronization Signal, SSS).

In some technologies, beam-related operations are described as follows: the base station configures an SRS resource set (SRS resource set) for the UE, and the SRS resource set includes at least one SRS resource (SRS resource). SRS resource sets have different uses: beam management, antenna selection, codebook, non-codebook. Among them, the SRS resource sets whose uses are codebook and non-codebook are respectively used for codebook-based physical uplink shared channel (PUSCH) transmission and non-codebook-based PUSCH transmission. Spatial relationships may be configured in SRS resources. When the SRS resource is configured with a spatial relationship, the UE needs to send the SRS resource according to the spatial relationship of the SRS resource, that is, to determine the transmission filter parameter; when the SRS resource is not configured with a spatial relationship, the UE determines the transmission filter parameter by itself. The transmission filter parameter can be understood as the transmission parameter required to form a specific beam direction.

Figure 1 is a schematic diagram of the beam relationship between the base station and the UE. As shown in Figure 1, both the base station (gNB) and the UE support multiple beams, so uplink and downlink beam training (also called beam scanning or beam management) is required. The base station first configures a set of SRS resources for beam management for the UE. The SRS resources are not configured with spatial relationships, and the UE itself determines the transmission filter parameters for the SRS Resource Indicator (SRI). Then, the base station selects some better beam pairs as available/alternative beam pairs according to the results of beam training, and configures the SRS resource set for the codebook or non-codebook to the UE. The SRS resource set includes at least For one SRS resource, the spatial relationship of the SRS resource is expressed by the SRI of the SRS resource that the UE has sent or the downlink reference signal indicator (including the reference signal resource index) or the SSB indicator (including the SSB index) that the base station has sent, at least one SRS resource Correspond to at least one available/alternative beam pair respectively. As shown in Figure 2, Figure 2 is a schematic diagram of the beam relationship between the base station and the UE after training. The SRS resource set includes two SRS resources, which are marked as SRI1 and SRI2, respectively.

In a multi-beam system, for downlink transmission, the base station instructs the sending beam, and the UE knows that the downlink sending beam of the base station corresponds to the best receiving beam of the UE according to its own measurement results. The choice of which beam to receive depends on the UE. For uplink transmission, the base station instructs the UE's sending beam, and the base station itself determines the receiving beam for uplink transmission. Therefore, the receiving beam is transparent to the transmitting end. For uplink transmission, in addition to sending beams, the base station also needs to configure power control parameters for the UE so that the UE can determine the power of the uplink transmission. The beam is expressed using reference signal indication information. For PUSCH transmission, the base station indicates one or more SRS resources through the SRI (SRS Resource Indicator) field in the Downlink Control Information (DCI), and the UE uses the same transmission filter parameters as the SRS resource corresponding to the SRI to transmit the PUSCH. , Can also be understood as using the same beam. The SRI indicated in the DCI is determined according to the SRS resource set configured by the base station. The SRS resources in the SRS resource set whose usage is codebook and non-codebook can be used as a reference for PUSCH transmission. As shown in Figure 3, Figure 3 is a schematic diagram of the base station and the UE selecting beams for transmission in the trained beams. The SRI field in the DCI for scheduling PUSCH indicates SRI1, and the UE uses the spatial relationship of the SRS resources corresponding to SRI1 to determine the PUSCH Send filter parameters. For physical uplink control channel (PUCCH) transmission, the beam is expressed by the spatial relationship corresponding to the PUCCH resource.

In some technologies, power control parameters for uplink transmission are related to beams. For PUSCH transmission, the beam is expressed by SRI. The base station configures the power control parameter pool of the PUSCH through high-level signaling (such as Radio Resources Control (RRC) signaling) and the association between the value of the SRI field in the DCI and various power control parameters in the power control parameter pool. The base station schedules uplink transmission through DCI. The DCI includes the SRI field. The uplink transmission can be obtained by the correlation between the value of the SRI field in the DCI configured by the higher layer signaling and the various power control parameters in the power control parameter pool through the value of the SRI field. Power control parameters. For PUCCH transmission, the beam includes a spatial relation index. The base station configures the power control parameter pool of the PUCCH through high-level signaling (for example, RRC signaling). The base station also configures the PUCCH spatial relationship pool through high-level signaling, where each spatial relationship corresponds to a group of power control parameters in the PUCCH power control parameter pool. The base station activates the spatial relationship in the spatial relationship pool of the PUCCH on the PUCCH resource through Media Access Control (MAC) layer signaling. The base station schedules PUCCH transmission through DCI, and carries information in the DCI to determine PUCCH resources. The UE can obtain the PUCCH resource and its associated spatial relationship, and then obtain the power control parameters of the PUCCH transmission.

The power control parameters include at least one of the following: 1. Open-loop power control parameters. The open-loop power control parameter can be composed of the path loss adjustment coefficient alpha and/or the target power P0. 2. The reference signal parameter for path loss (Path Loss, PL, referred to as path loss) measurement, also referred to as path loss measurement parameter for short, includes a reference signal resource index, and the path loss is obtained from the reference signal measurement result identified by the reference signal index. 3. The closed-loop power control parameters include at least one of the following: closed-loop power control index (also called closed-loop power control status, or closed-loop identification), and closed-loop power control quantity.

The power control parameter pool is a collective term for different types of power control parameter pools configured in advance. For example, the power control parameter pool includes one or more of an open-loop power control parameter pool, a path loss measurement parameter pool, and a closed-loop power control parameter pool. The open-loop power control parameter pool includes at least one open-loop power control parameter. The path loss measurement parameter pool includes at least one path loss measurement parameter. The closed-loop power control parameter pool includes at least one closed-loop power control parameter (such as a closed-loop power control index).

The power control parameter index may correspondingly include one or more of an open loop power control parameter index, a path loss measurement parameter index, and a closed loop power control index. Wherein, the open-loop power control parameter index may be used to determine at least one open-loop power control parameter in a pre-configured open-loop power parameter pool; the path loss measurement parameter index may be used to determine at least one open-loop power control parameter in a pre-configured path loss measurement parameter pool. A path loss measurement parameter; the closed-loop power control index can be used to determine at least one closed-loop power control parameter in a pre-configured closed-loop power control parameter pool.

The following takes the power control parameter of PUSCH as an example for description.

PUSCH parameter configuration PUSCH-Config parameters include PUSCH-PowerControl parameters.

The PUSCH-PowerControl parameter includes at least one P0-PUSCH-AlphaSet parameter, that is, an open-loop power control parameter pool.

The PUSCH-PowerControl parameter includes at least one PUSCH-PathlossReferenceRS parameter, that is, a path loss measurement parameter pool.

The PUSCH-PowerControl parameter includes at least one twoPUSCH-PC-AdjustmentStates parameter, indicating the number of closed-loop power control indexes, that is, the closed-loop power control parameter pool.

The PUSCH-PowerControl parameter includes at least one SRI-PUSCH-PowerControl parameter, that is, a pool of association relationships between SRI and power control parameters.

The "power control" in this application is an abbreviation of "power control" and has the same meaning. The number, index, and logo in this application belong to similar concepts and can be interchanged.

PUSCH transmission is divided into codebook-based transmission and non-codebook-based transmission according to MIMO transmission modes. PUSCH transmission is divided into three types according to scheduling methods: type 1 configured grant PUSCH transmission, type 2 configuration grant PUSCH transmission, and dynamic grant (dynamic grant) PUSCH transmission. Type 1 configuration authorization means configuration authorization based on higher layer signaling, and type 2 configuration authorization means authorization based on instructions from MAC layer signaling or physical layer signaling. If there is no ambiguity, the dynamically authorized PUSCH transmission can also be directly referred to as PUSCH transmission. For codebook-based transmission, one SRI information corresponds to a single SRS resource; for non-codebook-based transmission, one SRI information can correspond to a combination of multiple SRS resources, and these resource combinations are configured with power control parameters in high-level parameters. Corresponding to repeated transmission in beam diversity mode, the beams used for multiple transmissions may be different.

FIG. 4 is a flowchart of a power control method provided by an embodiment. As shown in FIG. 4, the method provided in this embodiment includes the following steps.

Step S4010: Determine Y spatial parameter information associated with uplink transmission.

The power control method provided in this embodiment is applied to a first communication node in a wireless communication system, and the first communication node is, for example, a UE. The UE uses the uplink channel for uplink transmission in the wireless communication system. As shown in Figures 1 to 3, the resources used by the UE for uplink transmission are allocated by the base station. As shown in Figures 1 to 3, the base station allocates beam resources to the UE, and the UE selects the beams that can be used for communication with the base station according to the measurement results. Finally, the UE selects the beam to be used among multiple beams.

When the uplink signal that the UE needs to send needs to be repeatedly transmitted due to various reasons, the transmission resources used for multiple repeated transmissions may be the same or different. The UE first determines Y spatial parameter information associated with uplink transmission. The space parameter information is used to indicate the reference signal resource information referenced by uplink transmission, and the space parameter information is configured and sent by the base station. The number of spatial parameter information is Y, and Y is an integer greater than or equal to 1. Wherein, the uplink transmission includes at least one of the following: PUSCH transmission, PUCCH transmission, SRS transmission, and Physical Random Access Channel (PRACH) transmission.

The spatial parameter information associated with the uplink transmission, also called the reference spatial parameter information of the uplink transmission, refers to the spatial parameter information referenced when the base station configures or schedules the uplink transmission and is used to determine the uplink transmission transmission parameters. For example, the DCI scheduled for PUSCH transmission includes SRI information, which is used to determine the precoding information for PUSCH transmission. In addition, the SRI information in the DCI is also used to determine the power control parameters of the PUSCH.

Step S4020: Determine the transmit power of X repeated transmissions of the uplink transmission according to the power control parameters associated with the Y spatial parameter information, where X and Y are both integers greater than or equal to 1.

The Y spatial parameter information determined by the UE are respectively associated with the corresponding power control parameters. Then, after the UE determines the number of repeated transmissions of the uplink transmission, it determines the X repeated transmissions of the uplink transmission according to the power control parameters associated with the Y spatial parameter information. The transmit power. The number of repeated transmissions X of the uplink transmission is also indicated by the base station, and the transmission power of the X repeated transmissions can be determined by using one or more of the Y spatial parameter information. The power control parameters include at least one of the following: open-loop power control parameters, closed-loop power control parameters, and path loss measurement parameters. Since Y power control parameters associated with the spatial parameter information are used to determine the transmit power of the X repeated transmissions of the uplink transmission, flexible power control can be performed for each uplink transmission.

In the power control method provided in this embodiment, after determining the Y spatial parameter information associated with the uplink transmission, the transmit power of the X repeated transmissions of the uplink transmission is determined according to the power control parameters associated with the Y spatial parameter information, where X and Y is an integer greater than or equal to 1, which realizes independent beam indications for each transmission in repeated transmissions sent in beam diversity mode and realizes flexible power control.

Each spatial parameter information is used to indicate reference signal resource information referenced by one uplink transmission; the reference signal resource information includes at least one of the following: SRI information, spatial relationship information, and transmission configuration information (Transmission Configuration Information, TCI). The SRI information is used to indicate at least one SRS resource; the spatial relationship information includes at least one of the following: the spatial relationship of the PUCCH and the spatial relationship of the SRS resource; the transmission control information includes at least one of the following: a reference signal resource indicator and an SSB indicator. The reference signal resource information referenced in each uplink transmission may be the same or different. Among them, an uplink transmission refers to a repetitive transmission of repeated uplink transmission, or a non-repetitive uplink transmission.

The following scheme can be adopted for repeated transmission of PUSCH: the size of the SRI information set and the content of the SRI information set are determined according to the number of PUSCH repeated transmissions configured by high-layer signaling and/or the number of repeated transmissions configured by DCI; One SRI information determines multiple sets of power control parameters, and determines the transmission power control parameters for each repeated transmission of the PUSCH. The following schemes can be adopted for repeated transmission of PUCCH: different spatial relationship indications corresponding to repeated PUCCH transmission, and MAC layer signaling or physical layer signaling indicates the use of multiple activated spatial relationships, such as sequence, reverse sequence, etc.; The transmission power control parameter of each repeated transmission of the PUCCH is determined according to the power control parameter of the PUCCH corresponding to each spatial relationship. Transmission Power Control (TPC) command field in DCI: The number of bits in the TPC command field in DCI is determined by the number of PUSCH/PUCCH repetitions; or the TPC command field in DCI only indicates one TPC command, limiting the same DCI The scheduled PUSCH repeated transmissions use the same closed-loop power control; or the TPC command in the DCI is only used for the first transmission, and the rest of the PUSCH transmissions can be used if the closed-loops are the same. The default for different closed-loops is 0.

The spatial parameter information set is introduced for the convenience of description, and represents the indication information of Y spatial parameter information. In practical applications, the spatial parameter information set can only be used as a virtual concept, so the high-level signaling or DCI may not need to configure (or indicate) the spatial parameter information set, and the high-level signaling or DCI may directly configure or indicate Y spatial parameter information. The spatial parameter information set includes at least one piece of spatial parameter information. When the spatial parameter information is used to indicate at least one SRI information referenced by one uplink transmission, the spatial parameter information set refers to the SRI information set. The SRI information set can only be used as a virtual concept. For example, the SRI field of DCI directly indicates Y SRI information, or high-level signaling directly configures Y SRI information.

The power control method provided in the embodiment of the present application will be described below with a specific embodiment.

In one embodiment, the uplink transmission is PUSCH transmission, and the spatial parameter information is SRI information as an example. The number of repeated transmissions X of the uplink transmission is determined by at least one of the following values: the number of repetitions X0 configured by the higher layer signaling, and the MAC layer information Let or the number of repetitions indicated by the physical layer signaling X1.

For type 1 configured grant PUSCH transmission, high-level signaling (such as RRC signaling) configures the repetition number X0, and configures Y SRI information. Wherein, X0 and Y are integers greater than or equal to 1, and Y is less than or equal to X0.

For type 2 configuration authorized PUSCH transmission and dynamically authorized PUSCH transmission, the base station can indicate the number of repetitions of scheduled transmission X1 through physical layer signaling DCI or MAC layer signaling (such as MAC control element (CE)) . The base station indicates Y SRI information through the SRI field of the DCI. Wherein, X1 and Y are integers greater than or equal to 1, and Y is less than or equal to X1.

X1 is less than or equal to X0. The number of bits in the SRI field in DCI is determined by X0. The parsing method of the SRI domain in DCI is determined by X1. For example, the number of bits in the SRI field determined by X0 may be 6, but the number of bits indicated by the SRI information determined by X1 is 3, so there are only 3 bits of valid information in the 6 bits of the SRI field. The 3 bits occupied by valid information may occupy the first 3 bits (or higher bits, MSB), or the last 3 bits (or lower bits, LSB) of the SRI field.

The relationship between the number Y of SRI information and the number of repetitions X: when Y is equal to X, the above Y SRI information are respectively applied to X repeated transmissions; when Y is less than X, the above X repeated transmissions are divided into Y according to a predetermined rule Grouping, the above-mentioned Y SRI information are respectively applied to Y groups of repeated transmissions; when Y is equal to 1, the spatial relationship is used for each repeated transmission of X repeated transmissions. For example, when the number of repeated transmissions of the PUSCH X is greater than 1, and Y is equal to 1, that is, the SRI information set includes only one SRI information, then the SRI information is used for each repeated transmission of X repeated transmissions of the PUSCH.

The predetermined rules include at least one of the following: Rule 1: Assign the required number of repeated transmission numbers to each packet in turn according to the repeated transmission number; Rule 2: Assign repeated transmission numbers to each packet in turn according to the repeated transmission number until the allocation is completed.

The method for determining the number of repeated transmissions required for each packet includes: when X is divisible by Y, the number of repeated transmissions required for each packet is X/Y. When X is not divisible by Y, the smaller group number

The number of repeated transmission numbers for each packet is

The number of repeated transmission numbers for the remaining packets is

Or, when X is not divisible by Y, the one with the larger group number

The number of repeated transmission numbers for each packet is

The number of repeated transmission numbers for the remaining packets is

among them

It is the operation of rounding down.

Assuming X=6, Y=2, and the predetermined rule is to assign the required number of repeated transmission numbers to each packet in sequence according to the repeated transmission number, there are two groups, and both groups contain 3 repeated transmission numbers. The 3 smaller numbers are allocated to the first repeated transmission number group, and the 3 larger numbers in X are allocated to the second repeated transmission number group. That is, the same spatial parameter information (such as SRI information) is used for the first 3 repeated transmissions, and the same spatial parameter information is used for the last 3 repeated transmissions.

Assuming X=6, Y=2, the predetermined rule is to assign repeated transmission numbers to each packet in turn according to the repeated transmission numbers until the allocation is completed, there are 2 packets, and both packets contain 3 repeated transmission numbers, the number in X The 3 even numbers are allocated to the first repeated transmission number group, and the 3 odd numbers in X are allocated to the second repeated transmission number group. That is, the same spatial parameter information is used for repeated transmission of an even number, and the same spatial parameter information is used for repeated transmission of an odd number.

Assuming X = 7 (including X_0, X_1,..., X_6), Y = 4 (including Y_0, Y_1,..., Y_3), the predetermined rule is to assign the required number of packets to each packet according to the repeated transmission number. When repeating the transmission number, there are 4 groups, and the 3 groups with the smaller group number (including Y_0, Y_1, Y_2) contain 2 repeated transmission numbers, that is, the Y_0 group contains X_0 and X_1, and the Y_1 group contains X_2 and X_3, Y_2. Contains X_4 and X_5, a packet with a larger group number contains one repeated transmission number, that is, group Y_3 contains X_6.

When X=2 and Y=1, X repeated transmissions belong to the same group. At this time, each repeated transmission of X repeated transmissions uses unique SRI information.

The MAC CE or DCI contains information used to indicate the application of rule 1 or rule 2. The MAC CE or DCI contains information used to indicate the sequence of the activated Y SRI information for multiple repeated transmissions. For example, when Y=2, one R bit is used to indicate the sequence of activated Y=2 SRI information for multiple repeated transmissions. For example, a value of 0 for 1 bit indicates order, and a value of 1 indicates reverse order.

For type 1 configuration authorized PUSCH transmission, the number of repetitions X=X0; for type 2 configuration authorized PUSCH transmission and dynamically authorized PUSCH transmission, when the DCI indicates the scheduled transmission repetition number X1, the number of repetitions X= X1, otherwise, the number of repetitions X=X0. The SRI information indicates at least one SRS resource, which is used to indicate the SRS resource referenced by a single transmission. That is, a single transmission uses the same transmission parameter as the referenced SRS resource, including at least one of the transmission beam, the reception beam, precoding information, or the transmission filter parameter. In the codebook-based SRS resource set, the SRI information indicates 1 SRS resource. In an SRS resource set whose usage is not based on a codebook, the SRI information indicates one or more SRS resources.

In an embodiment, the Y spatial parameter information is indicated by the SRI information set; the SRI information set includes at least one of the following: Y bit blocks for indicating Y spatial parameter information respectively, wherein the number of bits in each bit block is the same ; Used to respectively indicate Y bit blocks of Y spatial parameter information, where the number of bits in any one of the second to Y-th bit blocks is less than or equal to the number of bits in the first bit block; used to indicate Y respectively Y-bit blocks of spatial parameter information, where the meaning of the second to Y-th bit blocks is determined according to the meaning of the first bit block; it is used to indicate the B-bit information of Y spatial parameter information at the same time, and each of the B-bit information The values indicate Y spatial parameter information. The SRI information set is carried in physical layer signaling or higher layer signaling. For type 1 configuration authorized PUSCH transmission, high-level signaling configures 1 set, X set or Y set of power control parameters; for type 2 configuration authorized PUSCH transmission, high-level signaling configures 1 set, X set or Y set of open loop Power control parameters and/or closed-loop power control parameters.

The high-level signaling, or the physical layer signaling includes an SRI information set, which is used to indicate Y SRI information. The SRI information set includes Y SRI information, where each SRI information occupies the same bit overhead, or the SRI information set indicates one item in a predefined SRI information set to indicate Y SRI information. The SRI information set can indicate Y SRI information in one of the following ways:

Manner 1: The SRI information set includes Y pieces of A-bit information, which respectively indicate Y pieces of SRI information.

For example: 1 piece of A-bit information indicates 1 piece of SRI information.

As shown in Table 1 below, for non-codebook-based PUSCH transmission, when the maximum number of layers (L _max ) is 1, an example of the relationship between the bit value of the SRI information and the SRS resource indication.

Table 1 SRI information for PUSCH transmission not based on codebook, L _max =1

The two left columns in Table 1 indicate that the number of SRS resources (N _SRS ) in the SRS resource set is 2, and the SRI information has two values. Two values of A = 1 bit are used to represent two of the SRS resource sets. SRS resources, namely SRS resource 0 and SRS resource 1. The middle two columns indicate that the number of SRS resources in the SRS resource set is 3, and the SRI information has three values. The first three values of A=2 bits are used to indicate the three SRS resources in the SRS resource set, namely SRS resources. 0, SRS resource 1, SRS resource 2. The two columns on the right indicate that the number of SRS resources in the SRS resource set is 4, SRI information has 4 values, and A=2 bits are required, and the 4 values respectively represent 4 SRS resources in the SRS resource set, that is, SRS resource 0 , SRS resource 1, SRS resource 2, SRS resource 3.

In the scenario of PUSCH repeated transmission, when multiple repeated transmissions need to use beam diversity, and the number of different beams is Y, the SRI information set includes Y SRI information. For non-codebook-based PUSCH single transmission, up to 4 SRS resources can be referenced, or it can be considered to support up to 4 different beams, so different repeated transmissions may correspond to different beams (indicated by SRS resources), or beam sets ( Use SRS resource set indication).

For example, when Y=2, the SRI information set includes two parts, the first half and the second half (or the first half and the second half from high to low by bit, or from low to high by bit). The bit information is independent. It is parsed into 2 SRI messages.

For non-codebook-based PUSCH transmission, when the maximum number of layers is 1, and when the number of SRS resources in the SRS resource set is 3, SRI information requires 2 bits. When Y=2, the SRI information set includes 2 SRI information, that is, 4 bits. The 2 bits of the most significant bit (Most Significant Bit, MSB) and the 2 bits of the least significant bit (Least Significant Bit, LSB) respectively represent 2 pieces of SRI information. The analysis of each 2-bit is shown in the middle two columns of Table 1. For example, "0001", where "00" represents SRS resource 0 in the SRS resource set, and "01" represents SRS resource 1 in the SRS resource set.

For codebook-based PUSCH transmission, when the number of SRS resources in the SRS resource set is 2, the SRI information requires 1 bit. When Y=2, the SRI information set includes 2 SRI information, that is, 2 bits. When the number of SRS resources in the SRS resource set is one of 3 or 4, the SRI information requires 2 bits. Y pieces of SRI information require Y*2 bits. When the number of SRS resources in the SRS resource set is one of 5 to 8, the SRI information requires 3 bits. Y pieces of SRI information require Y*3 bits.

Manner 2: The SRI information set includes 1 B-bit information, indicating Y SRI information.

For example, Table 2 is an example of the relationship between the bit value of the SRI information set and the SRS resource indication for non-codebook PUSCH transmission when the maximum number of layers is 4. Similar to Table 1, the two columns on the left, the two columns in the middle, and the two columns on the right are the indications of the SRS resources when the _{number of SRS resources N SRS in the SRS resource set is 2, 3, and 4.}

Table 2 Non-codebook-based PUSCH transmission SRI information set, L _max =4

When the number of repeated transmissions of the PUSCH X is greater than 1, and Y is equal to 1, that is, the SRI information set includes only one SRI information, then the SRI information is used for each repeated transmission of X repeated transmissions of the PUSCH. For example, the bits in the right two columns are 0-14, the bits in the middle two columns are 0-6, and the bits in the left two columns are 0-2, which means Y=1.

When Y is greater than 1, the number of SRS resources included in the SRI information used for each repeated transmission is the same.

For the convenience of description, the following description method is agreed: the "a+a+..." set includes at least one "a+a+..." information, the number of a contained in "a+a+..." is equal to Y, and each The number of SRS resources included in the SRI information is a, where a is an integer greater than or equal to 1.

When Y is greater than 1, including at least one of the following conditions:

When each SRI information includes 1 SRS resource, the "1+1" set includes at least one "1+1" information, and each "1+1" information contains two parts, the first part and the second part are used to indicate Y=2 SRI information. Similarly, the "1+1+1" set includes at least one "1+1+1" information, and each "1+1+1" information includes 3 parts, which are respectively used to indicate Y=3 SRI information. The "1+1+1+1" set includes at least one "1+1+1+1" message, and each "1+1+1+1" message contains 4 parts, which are used to indicate Y=4 SRI messages. .

When each SRI message includes 2 SRS resources, the "2+2" set includes at least one "2+2" message, and each "2+2" message contains two parts. The first part and the second part are used to indicate Y=2 SRI information. Similarly, the "2+2+2" set includes at least one "2+2+2" information, and each "2+2+2" information includes 3 parts, which are respectively used to indicate Y=3 SRI information. The "2+2+2+2" set includes at least one "2+2+2+2" message, and each "2+2+2+2" message contains 4 parts, which are used to indicate Y=4 SRI messages. .

When each SRI message includes 3 SRS resources, the "3+3" set includes at least one "3+3" message. Each "3+3" message contains two parts. The first part and the second part are used to indicate Y=2 SRI information. Similarly, the "3+3+3" set includes at least one "3+3+3" information, and each "3+3+3" information includes 3 parts, which are respectively used to indicate Y=3 SRI information. The "3+3+3+3" set includes at least one "3+3+3+3" message, and each "3+3+3+3" message contains 4 parts, which are used to indicate Y=4 SRI messages. .

When each SRI information includes 4 SRS resources, 4 SRS resources are used for each transmission.

Each "1" information indicates 1 SRS resource in the SRS resource set, each "2" information indicates 2 SRS resources in the SRS resource set, and each "3" information indicates 3 in the SRS resource set. SRS resources.

When the number of SRS resources included in the SRS resource set is different, the amount of information included in each of the foregoing sets may be different. Described as follows:

When the SRS resource set includes 4 SRS resources, when Y=2: the "1+1" set includes at least one of the following information: {0; 1}, {0; 2}, {0; 3}, {1; 2}, {1; 3}, {2; 3}. Among them, {0; 1} represents two SRI information, respectively SRS resource 0 and 1 in the SRS resource set; {2; 3} represents two SRI information, respectively SRS resource 2 and 3 in the SRS resource set. The meaning of other information can be deduced by analogy, so I won't repeat it.

The "2+2" set includes at least one of the following information: {0,1; 2,3}, {0,2; 1,3}, {0,3;1,2}. Among them, {0,1;2,3} represents two SRI information, which are SRS resources 0 and 1 in the SRS resource set and SRS resources 2 and 3 in the SRS resource set, that is, the first SRI information includes SRS resources SRS resources 0 and 1 in the set, and the second SRI information includes SRS resources 2 and 3 in the SRS resource set. The meaning of other information can be deduced by analogy, so I won't repeat it.

The "3+3" set includes at least one of the following information: {0,1,2;1,2,3}, {2,3,0; 3,0,1}.

The above-mentioned "1+1" set, "2+2" set, and "3+3" set are placed in the two right columns of Table 2 in order. There are 11 cases in total, occupying 15 to 25 of the value of the SRI field. Compared with only supporting 4 bits in 15 cases when Y=1, 26 cases require 5 bits, and the overhead is only increased by 1 bit. If using mode 1 to support Y=2, two 4 bits are required, that is, 8 bits, which saves 5 bits in overhead.

When the SRS resource set includes 4 SRS resources, when Y=3:

The "1+1+1" set includes at least one of the following information: {0; 1; 2}, {1; 2; 3}, {2; 3; 0}, {3; 0; 1}. Among them, {1; 2; 3} represents three SRI information, which are SRS resources 1, 2 and 3 in the SRS resource set. The meaning of other information can be deduced by analogy, so I won't repeat it.

The "2+2+2" set includes at least one of the following information: {0,1; 0,2; 0,3}, {1,0;1,2;1,3}, {2,0;2, 1; 2,3}, {3,0; 3,1; 3,2}. Among them, {0,1;0,2;0,3} represents 3 SRI information, that is, the first SRI information includes SRS resources 0 and 1 in the SRS resource set, and the second SRI information includes the SRS resource set SRS resources 0 and 2, and the third SRI information includes SRS resources 0 and 3 in the SRS resource set. The meaning of other information can be deduced by analogy, so I won't repeat it.

The "3+3+3" set includes at least one of the following information: {0,1,2; 0,1,3; 0,2,3}, {1,0,2;1,2,3;1, 0,3}, {2,0,1; 2,0,3; 2,1,3}, {3,0,1; 3,0,2; 3,1,2}. Among them, {0,1,2;0,1,3;0,2,3} means 3 SRI information, that is, the first SRI information includes SRS resources 0, 1, and 2 in the SRS resource set, and the second The SRI information includes SRS resources 0, 1, and 3 in the SRS resource set, and the third SRI information includes SRS resources 0, 2, and 3 in the SRS resource set. The meaning of other information can be deduced by analogy, so I won't repeat it.

The above-mentioned "1+1+1" set, "2+2+2" set, and "3+3+3" set are placed in the right two columns of Table 2, a total of 12 situations. On the basis of the above-mentioned Y=2 sets, these 12 types of information occupy 26 to 37 of the value of the SRI field. Compared with only supporting 4 bits in 15 cases when Y=1, 38 cases require 6 bits, and the overhead is only increased by 2 bits. If using mode 1 to support Y=3, three 4 bits are required, that is, 12 bits, which saves 6 bits of overhead.

When the SRS resource set includes 4 SRS resources, when Y=4:

The "1+1+1+1" set includes at least the following information: {0; 1; 2; 3}. Represents 4 pieces of SRI information, which are SRS resources 0, 1, 2 and 3 in the SRS resource set.

The "2+2+2+2" set includes at least the following information: {0,1; 2,3; 0,2; 1,3}. Represents 4 SRI information, that is, the first SRI information includes SRS resources 0 and 1 in the SRS resource set, the second SRI information includes SRS resources 2 and 3 in the SRS resource set, and the third SRI information includes the SRS resource set SRS resources 1 and 3.

The "3+3+3+3" set includes at least the following information: {0,1,2; 0,1,3; 0,2,3;1,2,3}. Represents 4 SRI information, that is, the first SRI information includes SRS resources 0, 1, and 2 in the SRS resource set, the second SRI information includes SRS resources 0, 1, and 3 in the SRS resource set, and the third SRI information It includes SRS resources 0, 2, and 3 in the SRS resource set, and the fourth SRI information includes SRS resources 1, 2 and 3 in the SRS resource set.

The above-mentioned "1+1+1+1" set, "2+2+2+2" set, and "3+3+3+3" set are placed in the right two columns of Table 2 in sequence, and there are three situations in total. On the basis of the above sets of Y=2 and 3, these three types of information occupy 38 to 40 of the value of the SRI field. Compared with only supporting 4 bits in 15 cases when Y=1, 41 cases require 6 bits, and the overhead is only increased by 2 bits. If using mode 1 to support Y=4, 4 4 bits are required, that is, 16 bits, which saves 10 bits of overhead.

When the SRS resource set includes 3 SRS resources, when Y=2:

The "1+1" set includes at least one of the following information: {0; 1}, {0; 2}, {1; 2}. Among them, {0; 1} represents two SRI information, which are SRS resources 0 and 1 in the SRS resource set. The meaning of other information can be deduced by analogy, so I won't repeat it.

The "2+2" set includes at least one of the following information: {0,1;0,2}, {1,0;1,2}, {2,0;2,1}. Among them, {0,1;0,2} represents two SRI information, that is, the first SRI information includes SRS resources 0 and 1 in the SRS resource set, and the second SRI information includes SRS resources 0 and 1 in the SRS resource set. 2. The meaning of other information can be deduced by analogy, so I won't repeat it.

The above-mentioned "1+1" set and "2+2" set are sequentially placed in the middle two columns of Table 2. There are 6 cases in total, occupying 7 to 12 of the value of the SRI field. Compared with only supporting 3 bits in 7 cases when Y=1, 13 cases require 4 bits, and the overhead is only increased by 1 bit. If using mode 1 to support Y=2, two 3 bits are required, that is, 6 bits, which saves 2 bits in overhead.

When the SRS resource set includes 3 SRS resources, when Y=3:

The "1+1+1" set includes at least one of the following information: {0; 1; 2}. Represents three SRI information, which are SRS resources 0, 1, and 2 in the SRS resource set.

The "2+2+2" set includes at least one of the following information: {0,1;1,2;0,2}. Represents three SRI information, that is, the first SRI information includes SRS resources 0 and 1 in the SRS resource set, the second SRI information includes SRS resources 1 and 2 in the SRS resource set, and the third SRI information includes the SRS resource set SRS resources 0 and 2 in.

The above-mentioned "1+1+1" set and "2+2+2" set are placed in the middle two columns of Table 2 in sequence, and there are two situations in total. On the basis of the above-mentioned Y=2 sets, these two types of information occupy 13 to 14 of the value of the SRI field. Compared with only supporting 3 bits in 7 cases when Y=1, 15 cases require 4 bits, and the overhead is only increased by 1 bit. If using mode 1 to support Y=2, two 3 bits are required, that is, 6 bits, which saves 2 bits in overhead.

When the SRS resource set includes 3 SRS resources, when Y=4:

The "1+1+1+1" set includes at least the following information: {0; 1; 2; 0}, {1; 2; 0; 1}, {2; 0; 1; 2}. Among them, {0; 1; 2; 0} represents 4 pieces of SRI information, which are SRS resources 0, 1, 2 and 0 in the SRS resource set. The meaning of other information can be deduced by analogy, so I won't repeat it.

The "2+2+2+2" set includes at least the following information: {0,1;1,2;0,2;0,1},{1,2;0,2;0,1;1,2} , {0,2; 0,1; 1,2; 0,2}. Among them, {0,1;1,2;0,2;0,1} represents 4 SRI information, that is, the first SRI information includes SRS resources 0 and 1 in the SRS resource set, and the second SRI information includes SRS SRS resources 1 and 2 in the resource set, the third SRI information includes SRS resources 0 and 2 in the SRS resource set, and the fourth SRI information includes SRS resources 0 and 1 in the SRS resource set. The meaning of other information can be deduced by analogy, so I won't repeat it.

The above-mentioned "1+1+1+1" set and "2+2+2+2" set are placed in the middle two columns of Table 2, in total, 6 cases. On the basis of the above-mentioned Y=3 sets, these 6 types of information occupy 15 to 20 of the value of the SRI field. Compared with only supporting 3 bits in 7 cases when Y=1, 21 cases require 5 bits, and the overhead is only increased by 2 bits. If using mode 1 to support Y=3, three 3 bits are required, that is, 9 bits, which saves 4 bits in overhead.

When the SRS resource set includes 2 SRS resources, when Y=2:

The "1+1" set includes at least one of the following information: {0; 1}. Represents two SRI information, which are SRS resources 0 and 1 in the SRS resource set.

The above-mentioned "1+1" set is placed in the two left columns of Table 2. There is a total of 1 case, occupying 3 of the value of the SRI field. Compared with only supporting 2 bits in 3 cases when Y=1, 4 cases require 2 bits, and the overhead is not increased. If using mode 1 to support Y=2, two 2 bits are required, that is, 4 bits, which saves 2 bits in overhead.

When the SRS resource set includes 2 SRS resources, when Y=3:

The "1+1+1" set includes at least one of the following information: {0; 1; 0}, {1; 0; 1}. Among them, {0; 1; 0} represents 3 pieces of SRI information, which are SRS resources 0, 1, and 0 in the SRS resource set. The meaning of other information can be deduced by analogy, so I won't repeat it.

The above-mentioned "1+1+1" sets are placed in the left two columns of Table 2 in sequence, and there are two situations in total. On the basis of the above-mentioned Y=2 sets, these two types of information occupy 4 to 5 of the value of the SRI field. Compared with only supporting 2 bits in 3 cases when Y=1, 6 cases require 3 bits, and the overhead is only increased by 1 bit. If using mode 1 to support Y=2, three 2 bits are required, that is, 6 bits, which saves 3 bits in overhead.

When the SRS resource set includes 2 SRS resources, when Y=4,

The "1+1+1+1" set includes at least one of the following information: {0; 1; 0; 1}. Represents 4 pieces of SRI information, which are SRS resources 0, 1, 0, and 1 in the SRS resource set.

The above "1+1+1" set is placed in the two left columns of Table 2, and there is a total of 1 case. On the basis of the above-mentioned Y=3 sets, this type of information occupies 6 of the value of the SRI field. Compared with only supporting 2 bits in 3 cases when Y=1, 7 cases require 3 bits, and the overhead is only increased by 1 bit. If using mode 1 to support Y=2, 4 2 bits are required, that is, 8 bits, which saves 5 bits in overhead.

Table 3 is an example of the relationship between the bit value of the SRI information set and the SRS resource indication for non-codebook PUSCH transmission when the maximum number of layers is 3. The two columns on the left, the two columns in the middle, and the two columns on the right are indications of SRS resources when the number of SRS resources in the SRS resource set is 2, 3, and 4, respectively. The "1+1", "2+2", ... "3+3+3+3" sets in Table 3 have the same meaning as the corresponding columns in Table 2.

Table 4 is an example of the relationship between the bit value of the SRI information set and the SRS resource indication for non-codebook PUSCH transmission when the maximum number of layers is 2. The "1+1", "2+2", ... "2+2+2+2" sets in Table 4 have the same meaning as the corresponding columns in Table 2.

Table 5 is an example of the relationship between the bit value of the SRI information set and the SRS resource indication for non-codebook PUSCH transmission when the maximum number of layers is 1. The "1+1" set in the table has the same meaning as the corresponding column in Table 2.

Table 3 Non-codebook-based PUSCH transmission SRI information set, L _max =3

Table 4 Non-codebook-based PUSCH transmission SRI information set, L _max = 2

Table 5 SRI information set for PUSCH transmission not based on codebook, L _max =1

Table 2 to Table 5 shows the cases where Y=1, 2, 3, and 4 are all supported. This structure is used for fixed beam diversity. The number of different beams (sets). The maximum number of Y is predefined, or RRC In the case of signaling configuration, the actual Y value is determined by the value of DCI. For example, Tables 2, 3, and 4 are used when the maximum value of Y is 4. When the maximum number of layers is 2, both the base station and the UE select Table 4. When the number of SRS resources in the SRS resource set is 4, the right two columns are used, and the overhead of the SRI field in the DCI is 5 bits. When the value of this field is 28, it indicates the information of the "2+2+2+2" set, namely {0,1; 2,3; 0,2; 1,3}, and Y=4 at this time. When the value of this field is 10, it indicates the first information of the "1+1" set, and Y=2 at this time. When the value of this field is any one of 0-9, Y=1.

If the pre-defined maximum value of Y is 2, then in addition to the value of Y=1, there are sets of Y=2 in the table, such as "1+1", "2+2", and "3+3" sets , And Y=3 sets, such as "1+1+1", "2+2+2", "3+3+3" sets and Y=4 sets, such as "1+1+1+1" , "2+2+2+2", "3+3+3+3" collections do not exist. Then the number of bits required by the SRI field will be reduced accordingly. For example, the two right-hand columns of Table 4 only need to indicate a total of 19 cases 0-18, and the number of bits required is 5.

If the value of Y is predefined, such as Y=2, then the table may only have a set of Y=2.

If the value of Y is defined in advance, such as Y=3, the table may only have a set of Y=3 except for the value of Y=1. That is, the value of Y=1 must exist. The advantage of this is that the value interval of Y=1 represents 1 beam/SRS resource mode for each repetitive transmission, and the value interval of Y=3 represents 3 beam/SRS resource modes, which are used for each repetition. transmission. The flexible switching of Y=1 and Y=3 can be realized through different SRI information set values.

The corresponding relationship between the bit value of the SRI field in the table and the Y pieces of SRI information is only an implementation manner. In the actual implementation process, the order of the above "1+1", "2+2", ... "3+3+3+3" sets can also be exchanged. The order of information and the order of bit values in each set may be consistent or inconsistent with the above description. The amount of information included in these sets may also be different from the amount in the above example, which will also affect the correspondence between the information in the subsequent sets and the value of the bit.

In the above example, it is not specifically described that the value of some bits is reserved. Taking Table 4 as an example, when the number of SRS resources in the SRS resource set is 4, if Y is at most 2, the SRI field has 19 types of information from 0-18, and the number of bits required is 5. 5 bits can indicate a total of 32 Types of information, so the 13 values with larger values are reserved.

Table 6 is an example of the SRI field of PUSCH based on the codebook. Among them, the bit value is {0; 1}, which means that the first and second SRI information are SRS resources 0 and 1 in the SRS resource set, respectively.

Table 6 SRI information set for PUSCH transmission based on codebook

比特域值Bit field value	SRS资源指示，N _SRS＝2 SRS resource indication, N _SRS = 2
00	00
11	11
22	0；10; 1

3

Keep

The number of SRS resources in the SRS resource set of the PUSCH based on the codebook may also be 3 or 4. The relationship between the bit value of Table 5 and the SRS resource indication can also be used as the Y SRI information indications of the PUSCH based on the codebook.

The value of the SRS resource indicator in Table 1 to Table 6 refers to the SRS resource indicator in the SRS resource set. If the SRS resource set contains 3 SRS resources, and the SRS resource index (SRS-Resource Index, SRS-ResourceId) is 1, 3, and 7, respectively, the SRS resource indicator 0, 1, 2 represents the SRS resource number 1, 3, respectively , 7. The SRS resource number is used to indicate the SRS resource in the SRS resource pool configured by higher layer signaling.

In an embodiment, the Y spatial parameter information is jointly indicated by the SRI field and the antenna port field. The Y spatial parameter information indicated jointly by the SRI field and the antenna port field includes at least one of the following: a combination of part or all of the bits of the antenna port field and part or all of the SRI field indicates Y spatial parameter information; the SRI field indicates Y spaces For the first spatial parameter information in the parameter information, the antenna port field indicates the remaining Y-1 spatial parameter information.

Repeated transmission is generally used in situations where performance requirements are relatively high. In this case, the necessity of using Multi-User Multiple-Input Multiple-Output (MU-MIMO) is not very strong. Assuming that repeated transmission is only used for single-user multiple-input multiple-output (Single-User Multiple-Input Multiple-Output, SU-MIMO), the antenna port field in the DCI can be partially or completely used to indicate a partial SRI information set. Including one of the following methods:

Manner 3: The bit overhead of the SRI field is the same as the cost of only indicating the first SRI information, and in Manner 2, the extra bits that increase the overhead of the SRI field due to the combination of Y>1 are placed in the antenna port field for indication.

The antenna port domain was originally designed for SU/MU-MIMO transmission. The number of bits in this domain is determined by factors such as whether the transmission precoding (transform precoder) is enabled, the type of DMRS, and the number of time-domain symbols of the DMRS. The minimum is 2 bits and the maximum is 5 bits. From the above description, it can be seen that mode 2 has only 0, 1, or 2 bits for the extended bit requirement of the SRI information set. When the number of repetitions is greater than 1 and/or the number of different beam diversity Y is greater than 1, the antenna port field is not used to indicate MU-MIMO information, and the information indicated by the antenna port field is predetermined. When the number of ports is 1, it is fixed to port 0; when the number of ports is 2, it is fixed to ports 0 and 1; when the number of ports is 2, it is fixed to ports 0, 1, 2; when the number of ports is 3 When, it is fixed to port 0, 1, 2, 3. And so on, starting from port 0, until a sufficient number of ports are allocated. In addition, the number of front-load (front-loaded) symbols is determined by the number of ports and the number of DMRS Code Division Multiplexing (CDM) groups. For example, when the transmission precoding is enabled and the DMRS type is 1, the number of DMRS CDM groups is 2, when the number of DMRS ports is less than 4, the number of front-load symbols is 1, and when the number of DMRS ports is greater than or equal to 4, the number of front-load symbols is 1. The number of load symbols is 2.

The number of bits in the antenna port field is determined by at least one of the following parameters: whether transmission precoding is enabled, DMRS type, maximum number of DMRS symbols, and rank value. According to different situations, the number of bits in the antenna port field can be one of 2, 3, 4, or 5.

Therefore, the antenna port field can provide at least 2 bits of information for expanding the SRI field. For example, the SRI field requires 4 bits when indicating SRI information with Y=1, and 6 bits when indicating SRI information with Y=4, so the extra 2 bits are indicated by the antenna port field. For example, the lower 2 bits of the antenna port domain (or 2 bits of the LSB), or the upper 2 bits (or 2 bits of the MSB), as the upper 2 bits and the 4 bits of the SRI domain, are combined to form 6 bits of information, which is used in method 2. SRI information collection indication for various situations in the described method. For another example, the SRI field requires 4 bits when indicating SRI information with Y=1, and 5 bits when indicating SRI information with Y=4, so the extra 1 bit is indicated by the antenna port field.

Manner 4: The SRI field indicates the first SRI information, and the antenna port field indicates the second SRI information.

When the number of bits in the SRI field is less than or equal to the number of bits in the antenna port field, the SRI information in the antenna port field has the same overhead as the SRI information in the SRI field, and the same bit value indicates the same SRI information.

When the number of bits in the SRI field is greater than the number of bits in the antenna port field, at least one of the following rules is used to determine the manner in which the antenna port field indicates the second SRI information:

The SRI information indicated by the antenna port field is a subset of the SRI information of the SRI field; the SRI information indicated by the antenna port field contains the same number of SRS resources as the number of SRS resources indicated in the SRI information of the SRI field.

Using the above rules, the number of selectable values of SRI information indicated by the antenna port field in most cases can be compressed to less than or equal to 4. Taking Table 2 as an example, when N _SRS = 4 and the number of SRS resources indicated by the SRI information in the SRI field is 1, the optional value of the SRI information indicated by the antenna port field is 0-4 (see the two right columns of Table 2), There are 4 situations in total, and only 2 bits of information in the antenna port domain are needed. When N _SRS = 3 and the number of SRS resources indicated by the SRI information in the SRI field is 2, the optional value of the SRI information indicated by the antenna port field is 3-5 (see the middle two columns of Table 2), and there are 3 cases in total, only The 2-bit information of the antenna port domain is required.

When N _SRS = 4 and the number of SRS resources indicated by the SRI information in the SRI field is 2, there are 6 situations indicated in Table 2. When the number of bits in the antenna port field is less than 3, the antenna port field is indicated according to the following combination The number of SRI information is determined to be four: [0,1], [0,2], [1,3], [2,3], which respectively correspond to the bit values 4, 5, 8, and 8 of the two right columns of Table 2. 9.

Because mode 4 has relatively small indication overhead for the second SRI information, the second SRI information indicated by the antenna port described in this mode can also be indicated in the SRI field extension bit. Taking Table 2 as an example, when N _SRS = 4 and the number of SRS resources indicated by the SRI information in the SRI field is 1, the optional value of the SRI information indicated by the antenna port field is 0-4 (see the two right columns of Table 2), There are 4 situations in total, and only 2 bits of information in the antenna port domain are needed. The two bits of information may be extended bits of the SRI field, that is, the SRI field includes 6 bits of information, of which 4 bits represent the first SRI information, and the other 2 bits represent the second SRI information.

This method can also be used to extend Y greater than 2. For example, the SRI field includes 8 bits of information, where 4 bits represent the first SRI information, 2 bits represent the second SRI information, and more. 2 bits represent the third SRI information.

In an embodiment, each repeated transmission of PUSCH can also independently determine power control parameters. The base station configures the association of SRI information and power control parameters for the UE through high-level signaling. The association between SRI information and power control parameters may also be updated or adjusted by MAC layer signaling or physical layer signaling.

The UE determines the SRI information corresponding to each repeated transmission of the PUSCH, and determines the power control parameter of each repeated transmission of the PUSCH according to the association between the SRI information and the power control parameter.

The base station configures at least one type 1 configuration authorized PUSCH and/or at least one type 2 configuration authorized PUSCH. The following description only describes any type 1 or type 2 configuration authorized PUSCH.

For PUSCH transmission authorized by the type 1 configuration, when the number of repetitions X is greater than 1, and the number of SRI information Y is greater than 1, the power control parameters of each repeated transmission of the PUSCH are determined by one of the following methods:

The base station configures a set of power control parameters through high-level signaling for X times of PUSCH repeated transmission; the base station configures X sets of power control parameters through high-level signaling, which are respectively used for X times of PUSCH repeated transmission; the base station configures Y sets of power through high-level signaling The control parameters respectively correspond to Y SRI information, and the power control parameters are determined according to the SRI information associated with PUSCH repeated transmission.

For PUSCH transmission authorized by type 2 configuration, when the number of repetitions X is greater than 1, and the number of SRI information Y is greater than 1, the open-loop power control parameters and/or closed-loop power control parameters of the PUSCH repeated transmission are determined by one of the following methods:

The base station configures a set of open-loop power control parameters and/or closed-loop power control parameters through high-level signaling for X times of PUSCH repeated transmission; the base station configures X sets of open-loop power control parameters and/or closed-loop power control parameters through high-level signaling, They are used for X PUSCH repeated transmissions; the base station configures Y sets of open-loop power control parameters and/or closed-loop power control parameters through high-level signaling, corresponding to Y SRI information, and determines the corresponding switch based on the SRI information associated with the PUSCH repeated transmission. Loop power control parameters and/or closed loop power control parameters.

The path loss measurement parameters of the PUSCH repeated transmission authorized by the type 2 configuration are determined in the following way:

The base station configures the association of SRI information and power control parameters for the UE through high-level signaling. The association between SRI information and power control parameters may also be updated or adjusted by MAC layer signaling or physical layer signaling.

The UE determines the SRI information corresponding to each repeated transmission of the PUSCH, and determines the power control parameter of each repeated transmission of the PUSCH according to the association between the SRI information and the power control parameter. Use the path loss measurement parameter in the power control parameter as the path loss measurement parameter of the PUSCH repeated transmission.

When the SRI information for PUSCH transmission does not exist or is not provided, the UE refers to the default beam (or spatial relationship) to send repeated transmissions. The absence or absence of SRI refers to one of the following situations: PUSCH transmission is scheduled by DCI format 0_0, and the SRI parameter (such as SRI) in the RRC signaling of the PUSCH authorized by the type 1 configuration does not exist.

The default beam (or spatial relationship) refers to one of the following: the spatial relationship corresponding to the PUCCH resource with the lowest number, the spatial relationship of the PUCCH with the lowest number, and the only one SRS resource in the SRS resource set associated with the PUSCH Spatial Relations.

When the SRI for PUSCH transmission does not exist or is not provided, the UE uses the same PUSCH power control parameter or the same power to send repeated transmissions.

When the default beam is the spatial relationship corresponding to the PUCCH resource with the lowest number, the path loss measurement parameter of the power control parameter of the PUSCH is the path loss measurement parameter corresponding to the spatial relationship corresponding to the PUCCH resource with the lowest number.

When the default beam is the spatial relationship of the PUCCH with the smallest number, the path loss measurement parameter of the power control parameter of the PUSCH is the path loss measurement parameter corresponding to the spatial relationship of the PUCCH with the smallest number.

When the default beam is the spatial relationship corresponding to the only SRS resource in the SRS resource set associated with the PUSCH, the power control parameter of the PUSCH is the open loop power with the smallest number among the power control parameters of the PUSCH configured for the UE. Control parameters, closed-loop power control parameters with the smallest number, and path loss measurement parameters with the smallest number.

The above upstream transmission is the PUSCH as an example, the power control method provided in the embodiment of the present application is schematically described, and the following is an example where the upstream transmission is the PUCCH. When the uplink transmission is PUCCH transmission, the Y spatial parameter information is obtained by at least one of the following methods: Y spatial parameter information is determined according to the Y spatial relationships activated for the PUCCH resource; the PUCCH resource indication field includes Y C-bit information , Respectively indicate Y PUCCH resources, each PUCCH resource is associated with a spatial relationship, and is used to determine a spatial parameter information; the PUCCH resource indication field includes D bit information, indicating Y PUCCH resources, and each PUCCH resource is associated with a spatial relationship. To determine a spatial parameter information.

PUCCH single beam indication mode: the base station configures the PUCCH spatial relationship pool through high-level signaling, and the base station activates the spatial relationship in the PUCCH spatial relationship pool for PUCCH resources through MAC layer signaling. The base station schedules PUCCH transmission through DCI, and carries information in the DCI to determine PUCCH resources. The UE can obtain PUCCH resources and their associated spatial relationships.

When PUCCH is repeatedly transmitted, it is assumed that the same PUCCH resource is used, corresponding to different spatial relationship parameters. Then at least one spatial relationship is activated for one PUCCH resource in the MAC CE, and it is assumed that the number of activated spatial relationships at one time is Y, which is used for X repeated transmissions. Among them, X and Y are both integers greater than or equal to 1.

The base station configures or indicates the number of repeated transmissions X of the PUCCH through high-level signaling, and/or MAC layer signaling, and/or physical layer signaling.

The value of Y is determined by one of the following methods:

High-level signaling configuration; the number of spatial relationships activated in the MAC CE is determined.

As shown in Figure 5, Figure 5 shows the MAC CE for which the PUCCH spatial relationship is activated/deactivated. The cell ID (cell ID) and the uplink bandwidth part ID (Bandwidth Part ID, BWP ID) are where the PUCCH activated by the MAC CE is located. The cell ID and BWP ID, and the physical uplink control channel resource identifier (PUCCH resource ID) are used to identify the PUCCH resources configured by high-level signaling, and S0-S7 are the spatial relationships of up to 8 PUCCHs configured respectively corresponding to high-level signaling. R is a reserved bit.

For a single PUCCH transmission or repeated PUCCH transmission without beam diversity, a MAC CE that activates/deactivates a PUCCH spatial relationship only activates one PUCCH spatial relationship. For repeated PUCCH transmission of beam diversity, a MAC CE that activates/deactivates the PUCCH spatial relationship may activate Y PUCCH spatial relationships.

When Y is configured by high-level signaling, a MAC CE that activates/deactivates a PUCCH spatial relationship activates Y PUCCH spatial relationships. Otherwise, the number of PUCCH spatial relationships activated by a MAC CE with a PUCCH spatial relationship activated/deactivated is equal to Y.

The relationship between the number of spatial relations Y and the number of repetitions X:

When Y is equal to X, the above Y spatial relations are respectively applied to X repeated transmissions; when Y is less than X, the above X repeated transmissions are divided into Y packets according to a predetermined rule, and the above Y spatial relations are respectively applied to repeated transmissions. Y packets; when the number of repeated transmissions X is greater than 1, and Y is equal to 1, then this spatial relationship is used for each repeated transmission of X repeated transmissions.

The predetermined rules include at least one of the following:

Rule 1: Assign the required number of repeated transmission numbers to each packet in turn according to the repeated transmission number; Rule 2: Assign repeated transmission numbers to each packet in turn according to the repeated transmission number until the allocation is completed.

The meaning is the same as the grouping rule for repeated transmission of PUSCH. No longer.

The MAC CE contains information (for example, R bits) or the DCI contains information used to indicate one of the above rule 1 or rule 2.

The MAC CE contains information (for example, R bits) or the DCI contains information used to indicate the sequence of the activated Y spatial relationships for multiple repeated transmissions.

For example, when Y=2, one R bit in the MAC CE is used to indicate the sequence of activated Y=2 spatial relationships for multiple repeated transmissions. For example, a value of 0 for 1 R bit indicates the order, and a value of 1 indicates the reverse order.

When PUCCH is repeatedly transmitted, DCI may also be used to indicate different PUCCH resources, which correspond to different spatial relationship parameters. The PUCCH resource indication field in the DCI indicates Y PUCCH resources. There are the following ways:

Manner 1: The PUCCH resource indication field includes Y C bits of information, which respectively indicate Y PUCCH resources.

For example, C=3, 6 bits are required for the PUCCH resource indicating Y=2, and each 3 bits corresponds to one PUCCH resource.

Manner 2: The PUCCH resource indication field includes D bits of information, indicating Y PUCCH resources.

For example, when the number of PUCCH resources configured by RRC that needs to be indicated in the physical layer signaling is 8, then D=8. A bit map is used to indicate that Y of the D types of PUCCH resources are used for PUCCH repeated transmission.

In an embodiment, when the uplink transmission is PUCCH transmission, power control parameters can also be independently determined for each repeated transmission.

The base station configures the power control parameters corresponding to the spatial relationship of the PUCCH for the UE through high-level signaling. The MAC CE may update or adjust the power control parameters corresponding to the spatial relationship of the PUCCH.

The UE determines the PUCCH resource corresponding to each repeated transmission of PUCCH, and then determines the PUCCH spatial relationship of each PUCCH transmission, and determines the power of each repeated transmission of PUSCH according to the power control parameters corresponding to the PUCCH spatial relationship configured by high-layer signaling Control parameters.

When the spatial relationship of the PUCCH does not exist or is not provided, the UE uses the same PUCCH power control parameter or the same power to send repeated transmissions.

When the spatial relationship of the PUCCH does not exist or is not provided, the UE refers to the default beam (or spatial relationship) to send repeated transmissions. The default beam (or spatial relationship) refers to the beam sending PUCCH of message 3 of the random access process and repeating transmission.

Fig. 6 is a flowchart of another power control method provided by an embodiment. As shown in Fig. 6, the method provided by this embodiment includes the following steps.

Step S6010: Determine Y spatial parameter information associated with uplink transmission.

Step S6020: Determine the transmit power of X repeated transmissions of the uplink transmission according to the power control parameters associated with the Y spatial parameter information, where X and Y are both integers greater than or equal to 1.

Step S6030: Receive E transmission power control TPC commands, where E is an integer greater than or equal to 1.

In step S6040, the power control adjustment amount corresponding to the closed-loop power control index associated with the Y spatial parameter information is updated according to the E TPC commands.

The embodiment shown in FIG. 4 shows a technical solution that does not determine the transmit power of X repeated transmissions of uplink transmission based on the power control parameters associated with Y spatial parameter information, and the power control parameters can be indicated by TCP commands. The E TPC commands are carried in the TPC command field of the DCI.

In the closed-loop power control mechanism, the TPC command distinguishes the closed-loop power control index. If the SRI information corresponding to the repeated transmission of the PUSCH is different, the closed-loop power control indexes associated with the SRI information may be different, and the DCI scheduling the PUSCH needs to indicate the TPC commands corresponding to all closed-loop power control indexes.

In the repeated transmission of PUCCH, the spatial relationship is similar to the SRI information of PUSCH, and there is also the problem of how to carry the TPC commands of multiple closed-loop power control indexes similar to PUSCH.

When the TPC command field in the DCI for scheduling PUSCH repeated transmission contains at least one TPC command, the number of bits in the TPC command field is determined by at least one of the following parameters:

The number of bits is fixed to 1 TPC command; the number of TPC command bits is equal to the number of PUSCH repeated transmissions (ie X); the number of TPC command bits is equal to the number of PUSCH repetitions (ie X0) configured by high-level signaling; The number of TPC command bits equal to the maximum number of repetitions of PUSCH configured by higher layer signaling; the number of TPC command bits equal to the number of SRI information corresponding to the repeated transmission of PUSCH configured by higher layer signaling (ie Y); the number equals to higher layer The number of bits of the TPC command with the maximum number of SRI information corresponding to the repeated transmission of the PUSCH configured by the signaling; the number of TPC command bits with the number equal to the number of SRI information indicated by the SRI field; the number equal to the number corresponding to the repeated transmission of the PUSCH The number of TPC command bits for the number of closed-loop power control indexes; the number of TPC command bits whose number is equal to the maximum number of closed-loop power control indexes for PUSCH transmission configured by higher layer signaling.

When the TPC command field in the DCI scheduling PUCCH repeated transmission contains at least one TPC command, the number of bits in the TPC command field is determined by at least one of the following parameters:

The number of bits is fixed to 1 TPC command; the number of TPC command bits is equal to the number of repeated transmissions of PUCCH; the number of TPC command bits is equal to the number of repetitions of PUCCH configured by higher layer signaling; the number is equal to the number of PUCCH configured by higher layer signaling The number of TPC command bits of the maximum repetition times; the number of TPC command bits is equal to the number of spatial relationships corresponding to the repeated transmission of PUCCH configured by high-level signaling; the number is equal to the spatial relationship corresponding to repeated transmissions of PUCCH configured by high-level signaling The maximum number of TPC command bits; the number of TPC command bits equal to the number of closed-loop power control indexes corresponding to repeated PUCCH transmissions; the number is equal to the number of closed-loop power control indexes for PUCCH transmission configured by higher layer signaling The maximum number of bits in the TPC command.

The above assumes that the number of bits of the TPC command is predetermined. For example, it is fixed to 2 bits, or the number of bits of the TPC command can be obtained according to the configuration of higher layer signaling.

The UE analyzes the TPC command field in the DCI according to the number of repetitions of the PUSCH, or the number of SRIs indicated by the SRI field, or the number of closed-loop power control indexes corresponding to repeated PUSCH transmissions.

The UE analyzes the TPC command field in the DCI according to the number of closed-loop power control indexes corresponding to the PUCCH repeated transmission.

The corresponding relationship between the TPC command field and the closed-loop power control index in DCI is determined by one of the following methods:

1. When the TPC command field in the DCI that schedules repeated transmission of PUSCH contains only one TPC command, the TPC command is associated with the closed-loop power control index corresponding to all repeated transmissions of PUSCH. That is, one TPC command may be associated with multiple different closed-loop power control indexes.

2. When the TPC command field in the DCI that schedules repeated PUSCH transmission contains only one TPC command, the TPC command is associated with the closed-loop power control index corresponding to the first PUSCH transmission; the PUSCH repeated transmission corresponds to other closed-loop power control indexes. The TPC command is 0.

3. When the TPC command field in the DCI that schedules repeated transmission of PUSCH only contains at least one TPC command, each TPC command sequence corresponds to different closed-loop power control indexes associated with repeated transmission of PUSCH in a one-to-one correspondence. When the number of bits in the TPC command field is more than the number of TPC commands with different closed-loop power control indexes associated with the repeated transmission of PUSCH, only the previous (higher bit or lower bit) PUSCH in the TPC command field TPC commands with different closed-loop power control index numbers associated with repeated transmissions are valid.

4. When the TPC command field in the DCI for scheduling repeated PUSCH transmission only contains at least one TPC command, the sequence of each TPC command corresponds to the repeated transmission of PUSCH on a one-to-one basis. If multiple PUSCH repeated transmissions are associated with a closed-loop power control index, the TPC commands corresponding to the repeated transmissions of these PUSCHs have the same value. When the number of TPC commands is more than the number of repeated transmissions of the PUSCH, only the previous (higher-bit or lower-bit) TPC command of the number of repeated transmissions of the PUSCH in the TPC command field is valid.

In one scheduling, among multiple repeated transmissions belonging to the same closed-loop power control index, only the power control adjustment of the first repeated transmission is updated with the TPC command. The remaining repeated transmissions belonging to the same closed-loop power control index will not update the power control adjustment amount.

For example, a scheduled PUSCH repeated transmission has 4 transmissions, among which, the first and third repeated transmissions belong to closed-loop power control index 0, and the second and fourth repeated transmissions belong to closed-loop power control index 1. DCI's TPC commands include two TPC commands, which correspond to closed-loop power control indexes 0 and 1. Only the first repeated transmission uses the TPC command applied to closed-loop power control index 0 to update the power control adjustment value. The third repeated transmission does not need to update the power control adjustment value, and the power control adjustment value corresponding to the first repeated transmission is used. Similarly, for closed-loop power control index 1, only the second repeated transmission uses the TPC command applied to closed-loop power control index 1 to update the power control adjustment value. The fourth repeated transmission does not need to update the power control adjustment value. The corresponding power control adjustment is repeatedly transmitted twice.

The DCI (for example, DCI format 2-2, Group TPC commands for PUCCH/PUSCH) for sending TPC commands in a grouping mode is the number of TPC commands carried by a UE is determined by at least one of the following methods:

Fixed to 1; when the DCI Cyclic Redundancy Check (CRC) is scrambled with TPC-PUCCH-Radio Network Temporary Identifier (RNTI), the closed-loop function of PUCCH transmission configured by high-level signaling The maximum number of control indexes; when the CRC of DCI is scrambled with TPC-PUCCH-RNTI, the maximum number of closed-loop power control indexes for repeated transmission of PUCCH configured by high-layer signaling; the CRC of DCI uses TPC-PUSCH-RNTI When scrambling, the maximum number of closed-loop power control indexes for PUSCH transmission configured by higher layer signaling; when the CRC of DCI is scrambled with TPC-PUSCH-RNTI, the value of the closed-loop power control index for repeated transmission of PUSCH configured by higher layer signaling The maximum value of the quantity.

In an embodiment, the first communication node may also send to the second communication node whether to support PUSCH or PUCCH repetitive transmission power or capability information with different power control parameters.

In an embodiment, when the time interval between the non-first repetitive transmission of the uplink transmission and the first repetitive transmission is less than the predetermined time interval, the power or power control parameters of the non-first repetitive transmission and the first retransmission are the same .

The UE reports to the base station whether it supports PUSCH or PUCCH repetitive transmission power or capability information with different power control parameters.

The base station configures the UE whether to enable the function of PUSCH or PUCCH with different transmission power or power control parameters for each repetition.

When the UE supports PUSCH or PUCCH repetitive transmission power or power control parameters of different capabilities, the base station can configure the UE to enable or disable the PUSCH or PUCCH repetitive transmission power or power control parameters of different functions. Otherwise, when the UE does not support PUSCH or PUCCH repetitive transmission power or power control parameters of different capabilities, the UE can only support PUSCH or PUCCH repetitive transmission power or power control parameters of the same function.

The ability to support different PUSCH or PUCCH repeated transmission power or power control parameters can also be called the beam diversity ability to support PUSCH or PUCCH repeated transmission.

When the number of repetitions of PUSCH or PUCCH transmission is greater than 1, the power or power control parameters of each repetitive transmission are the same, including one of the following methods:

The power of each repetitive transmission is the same as the first transmission; the power of each repetitive transmission is the same as the highest value of the transmission power of each transmission; the power control parameters of each repetitive transmission are the same as the power control parameters of the first transmission.

The power control parameters of each repeated transmission are the same as the power control parameters of the first transmission, which means that the open-loop power control parameters, closed-loop power control parameters, and path loss measurement parameters of each repeated transmission are the same. The same path loss measurement parameter means that the reference signal used to measure the path loss is the same, but because different repeated transmissions are sent at different times, the path loss value may change, so the path loss value may be the same or different. The same closed-loop power control parameters means that the numbers of the closed-loop power control are the same, and the power control adjustment status of the closed-loop power control may be the same or different.

The power or power control parameters of each repeated transmission within a predetermined time are the same. When the time interval between the non-first repeated transmission and the first repeated transmission is less than the predetermined time interval, the non-first repeated transmission has the same power or power control parameters as the first repeated transmission.

The predetermined time interval is a pre-defined time or configured by the base station. Or the predetermined time interval is related to the processing capability of the UE, and the UE needs to report the predetermined time to the base station, that is, the time to keep the power of multiple repeated transmissions or the power control parameter unchanged. For example, the UE selects one of the predefined times to report to the base station.

The predetermined time interval includes one or more time units, and the time unit refers to one of the following: slot, subframe, frame, radio frame, second, millisecond, and microsecond.

FIG. 7 is a flowchart of another power control method provided in an embodiment. As shown in FIG. 7, the method provided in this embodiment includes the following steps.

Step S7010: Send Y spatial parameter information associated with the uplink transmission to the first communication node, and the power control parameters associated with the Y spatial parameter information are used to enable the first communication node to determine the transmission power of X repeated transmissions of the uplink transmission, where , X and Y are both integers greater than or equal to 1.

The power control method provided in this embodiment is applied to a second communication node in a wireless communication system, and the second communication node is, for example, a base station. The base station allocates uplink transmission resources for the UE in the wireless communication system. The power control method provided in this embodiment is the processing performed by the base station side in the embodiment shown in FIG. 4, and its implementation method and technical effects have been described in the embodiment shown in FIG. 4, and will not be repeated here.

In an embodiment, based on the embodiment shown in FIG. 7, at least one of the following is further included: configuring the number of repetitions X0 through higher layer signaling; and indicating the number of repetitions X1 through MAC layer signaling or physical layer signaling.

In an embodiment, based on the embodiment shown in FIG. 7, it further includes: scheduling or triggering uplink transmission through DCI; the number of bits in the SRI field in the DCI is determined by X0 and/or the analysis of the SRI field in the DCI The way is determined by X1.

In an embodiment, on the basis of the embodiment shown in FIG. 7, it further includes: Y pieces of spatial parameter information are determined by a set of spatial parameter information; the set of spatial parameter information includes at least one of the following: used to respectively indicate Y pieces of space Y bit blocks of parameter information, in which the number of bits in each bit block is the same; used to indicate Y bit blocks of Y spatial parameter information respectively, in which the number of bits in any one of the 2nd to Yth bit blocks is less than Or equal to the number of bits in the first bit block; Y bit blocks used to respectively indicate Y spatial parameter information, where the meaning of the second to Yth bit blocks is determined according to the meaning of the first bit block; at least one B-bit information for indicating Y pieces of spatial parameter information at the same time, and each value of the B-bit information indicates Y pieces of spatial parameter information.

In an embodiment, based on the embodiment shown in FIG. 7, the method further includes: jointly indicating Y spatial parameter information according to the SRI domain and the antenna port domain.

In an embodiment, based on the embodiment shown in FIG. 7, it further includes: sending E TPC commands to the first communication node, where E is an integer greater than or equal to 1, and E TPC commands are used to update Y The power control adjustment amount corresponding to the closed-loop power control index associated with the spatial parameter information.

In an embodiment, on the basis of the embodiment shown in FIG. 7, E TPC commands are carried in the TPC command field of DCI; the number of bits in the TPC command field is determined according to at least one of the following: 1 TPC command bit Number; the number of TPC command bits equal to the number of PUSCH or PUCCH repeated transmissions; number equal to the number of TPC command bits of the PUSCH or PUCCH repetition number configured by higher layer signaling; the number is equal to the maximum number of PUSCH or PUCCH configured by higher layer signaling The number of TPC command bits for the number of repetitions; the number of TPC command bits is equal to the number of spatial parameter information corresponding to the PUSCH or PUCCH repeated transmission configured by high-level signaling; the number is equal to the PUSCH or PUCCH repeated transmission corresponding to the high-level signaling configuration The number of TPC commands with the maximum number of space parameter information; the number of TPC commands with the number equal to the number of space parameter information; the number of TPC commands with the number equal to the number of closed-loop power control indexes corresponding to the repeated transmission of PUSCH or PUCCH Number of bits; the number of TPC command bits equal to the maximum number of closed-loop power control indexes for PUSCH or PUCCH transmission configured by high-layer signaling.

In an embodiment, on the basis of the embodiment shown in FIG. 7, the method further includes: receiving the capability information of whether to support PUSCH or PUCCH each repeated transmission power or power control parameter from the first communication node.

In an embodiment, based on the embodiment shown in FIG. 7, when the time interval between the non-first repetitive transmission and the first retransmission of the uplink transmission is less than the predetermined time interval, the non-first repetitive transmission and the first retransmission are less than the predetermined time interval. The power or power control parameters of a repeated transmission are the same.

FIG. 8 is a schematic structural diagram of a power control device provided by an embodiment. As shown in FIG. 8, the power control device provided in this embodiment includes:

The parameter determination module 81 is configured to determine Y spatial parameter information associated with the uplink transmission; the power control module 82 is configured to determine the transmission power of X repeated transmissions of the uplink transmission according to the power control parameters associated with the Y spatial parameter information, where , X and Y are both integers greater than or equal to 1.

The power control device provided in this embodiment is used to implement the power control method of the embodiment shown in FIG. 4, and the implementation principles and technical effects of the power control device provided in this embodiment are similar, and will not be repeated here.

Fig. 9 is a schematic structural diagram of another power control device provided by an embodiment. As shown in Fig. 9, the power control device provided in this embodiment includes:

The parameter sending module 91 is configured to send Y spatial parameter information associated with uplink transmission to the first communication node, and the power control parameters associated with the Y spatial parameter information are used to enable the first communication node to determine the X repetitive transmission of the uplink transmission. Transmission power, where X and Y are both integers greater than or equal to 1.

The power control device provided in this embodiment is used to implement the power control method of the embodiment shown in FIG. 7. The implementation principle and technical effect of the power control device provided in this embodiment are similar, and will not be repeated here.

FIG. 10 is a schematic structural diagram of a power control system provided by an embodiment. As shown in FIG. 10, the power control system provided in this embodiment includes: a first communication node 101 and a second communication node 102. Among them, the first communication node 101 includes the power control device as shown in FIG. 8, and the second communication node 102 includes the power control device as shown in FIG. 9. The first communication node 101 is, for example, a UE, and the second communication node 102 is, for example, a base station.

FIG. 11 is a schematic structural diagram of a terminal provided by an embodiment. As shown in FIG. 11, the terminal includes a processor 111, a memory 112, a transmitter 113, and a receiver 114; the number of processors 111 in the terminal can be one or There are multiple. One processor 111 is taken as an example in FIG. 11; the processor 111 and the memory 112 in the terminal can be connected by a bus or other methods. In FIG. 11, the connection by a bus is taken as an example.

As a computer-readable storage medium, the memory 112 can be configured to store software programs, computer-executable programs, and modules, such as the program instructions/modules corresponding to the power control method in the embodiment of FIG. 4 and FIG. The parameter determination module 81 and the power control module 82 in the control device). The processor 111 runs the software programs, instructions, and modules stored in the memory 112 to thereby terminal at least one functional application and data processing, that is, to implement the above-mentioned power control method.

The memory 112 may mainly include a program storage area and a data storage area. The program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the terminal, and the like. In addition, the memory 112 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.

The transmitter 113 is a module or a combination of devices capable of transmitting radio frequency signals into space, for example, a combination of radio frequency transmitters, antennas, and other devices. The receiver 114 is a module or a combination of devices capable of receiving radio frequency signals from space, for example, a combination of radio frequency receivers, antennas, and other devices.

FIG. 12 is a schematic structural diagram of a base station provided by an embodiment. As shown in FIG. 12, the base station includes a processor 121, a memory 122, a transmitter 123, and a receiver 124; the number of processors 121 in the base station may be one or There are multiple. One processor 121 is taken as an example in FIG. 12; the processor 121 and the memory 122 in the base station can be connected through a bus or other methods. In FIG. 12, the connection through a bus is taken as an example.

As a computer-readable storage medium, the memory 122 can be configured to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the power control method in the embodiment of FIG. 7 of the present application (for example, in a power control device). The parameter sending module 91). The processor 121 runs the software programs, instructions, and modules stored in the memory 122 to implement at least one functional application and data processing of the base station, that is, to implement the above-mentioned power control method.

The memory 122 may mainly include a program storage area and a data storage area. The program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the base station, and the like. In addition, the memory 122 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.

The transmitter 123 is a module or a combination of devices capable of transmitting radio frequency signals into space, for example, a combination of radio frequency transmitters, antennas, and other devices. The receiver 124 is a module or a combination of devices that can receive radio frequency signals from space, for example, a combination of radio frequency receivers, antennas, and other devices.

An embodiment of the present application also provides a storage medium containing computer-executable instructions. The computer-executable instructions are used to perform a power control method when executed by a computer processor. The method includes: determining Y spaces associated with uplink transmission Parameter information: Determine the transmit power of X repeated transmissions of uplink transmission according to the power control parameters associated with Y spatial parameter information, where X and Y are both integers greater than or equal to 1.

An embodiment of the present application also provides a storage medium containing computer-executable instructions. When the computer-executable instructions are executed by a computer processor, they are used to perform a power control method. The method includes: sending and uplink transmission to a first communication node. The associated Y spatial parameter information, and the power control parameters associated with the Y spatial parameter information are used to enable the first communication node to determine the transmission power of X repeated transmissions of the uplink transmission, where X and Y are both integers greater than or equal to 1. .

The above are only exemplary embodiments of the present application, and are not used to limit the protection scope of the present application.

The term user terminal encompasses any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicle-mounted mobile stations.

In general, the various embodiments of the present application can be implemented in hardware or dedicated circuits, software, logic or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor, or other computing device, although the present application is not limited thereto.

The embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example, in a processor entity, or by hardware, or by a combination of software and hardware. Computer program instructions can be assembly instructions, instruction set architecture ((Instruction Set Architecture, ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or any combination of one or more programming languages Source code or object code written.

The block diagram of any logic flow in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program can be stored on the memory. The memory can be of any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as but not limited to read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), optical Memory devices and systems (Digital Video Disc (DVD) or Compact Disc (CD)), etc. Computer-readable media may include non-transitory storage media. The data processor can be any type suitable for the local technical environment, such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (ASICs) ), programmable logic devices (Field-Programmable Gate Array, FPGA), and processors based on multi-core processor architecture.

Claims

A power control method, applied to a first communication node, includes:

Determine Y spatial parameter information associated with uplink transmission;

The transmit power of the X repeated transmissions of the uplink transmission is determined according to the power control parameters associated with the Y spatial parameter information, where X and Y are both integers greater than or equal to 1.
The method according to claim 1, wherein each spatial parameter information is used to indicate reference signal resource information referenced by one uplink transmission;

The reference signal resource information includes at least one of the following: channel sounding reference signal resource indication SRI information, spatial relationship information, and transmission configuration information.
The method according to claim 2, wherein the SRI information indicates at least one channel sounding reference signal (SRS) resource;

The spatial relationship information includes at least one of the following: the spatial relationship of the physical uplink control channel PUCCH, and the spatial relationship of the SRS resource;

The transmission configuration information includes at least one of the following: a reference signal resource indication and a synchronization signal block SSB indication.
The method according to claim 1, wherein the power control parameter includes at least one of the following:

Open loop power control parameters, closed loop power control parameters, and path loss measurement parameters.
The method according to claim 1, wherein the uplink transmission includes at least one of the following:

Physical uplink shared channel PUSCH transmission, PUCCH transmission, SRS transmission, physical random access channel PRACH transmission.
The method according to claim 1, wherein the number of repeated transmissions X of the uplink transmission is determined by at least one of the following:

The number of repetitions X0 configured by high-layer signaling, and the number of repetitions X1 indicated by media access control MAC layer signaling or physical layer signaling.
The method according to claim 6, further comprising at least one of the following:

X1 is less than or equal to X0;

In the case that the uplink transmission is PUSCH transmission authorized by the type 1 configuration, X is determined according to X0;

In the case that the uplink transmission is PUSCH transmission authorized by the type 2 configuration, X is determined according to X0;

In the case that the uplink transmission is a PUSCH transmission authorized by a type 2 configuration, and there is a repetition number X1 indicated by MAC layer signaling or physical layer signaling, determine X according to X1;

In the case that the uplink transmission is dynamically authorized PUSCH transmission, determine X according to X0;

In the case where the uplink transmission is a dynamically authorized PUSCH transmission and there is a repetition number X1 indicated by MAC layer signaling or physical layer signaling, X is determined according to X1.
The method according to claim 6 or 7, further comprising at least one of the following:

The number of bits in the SRI field in the downlink control information DCI for scheduling or triggering the uplink transmission is determined by X0;

The analysis mode of the SRI field in the DCI that schedules or triggers the uplink transmission is determined by X1.
The method according to claim 1, further comprising at least one of the following:

In the case that Y is equal to 1, the same one piece of spatial parameter information is applied to the X repeated transmissions;

In the case that Y is equal to X, the Y pieces of spatial parameter information are respectively applied to the X repeated transmissions;

When Y is less than X, the X repeated transmissions are divided into Y packets according to a predetermined grouping rule, and the Y spatial parameter information is respectively applied to the repeated transmissions of the Y packets.
The method according to claim 9, wherein the predetermined grouping rule comprises at least one of the following:

Assign the required number of repeated transmission numbers to each packet in the sequence of repeated transmission numbers;

Assign the repeated transmission number to each packet in turn in the sequence of the repeated transmission number until the allocation is completed.
The method according to claim 1, wherein the Y pieces of spatial parameter information are indicated by a set of spatial parameter information;

The spatial parameter information set includes at least one of the following:

Respectively indicating the Y bit blocks of the Y spatial parameter information, and the Y bit blocks have the same number of bits;

Used to respectively indicate the Y bit blocks of the Y spatial parameter information, in the Y bit blocks, the number of bits from the second bit block to the Y-th bit block is less than or equal to the bits of the first bit block number;

Respectively indicating the Y bit blocks of the Y spatial parameter information, in the Y bit blocks, the meaning of the second bit block to the Y bit block is determined according to the meaning of the first bit block;

B-bit information used to indicate the Y pieces of spatial parameter information, and each value of the B-bit information indicates the Y pieces of spatial parameter information.
The method according to claim 11, wherein the spatial parameter information set is carried in the SRI field of DCI, the spatial relationship field of PUCCH, or higher layer signaling, or is determined according to the PUCCH resource indication field.
The method according to claim 1, wherein the Y spatial parameter information is jointly indicated by the SRI field and the antenna port field and includes at least one of the following:

A combination of part or all of the bits of the antenna port field and part or all of the bits of the SRI field indicates the Y pieces of spatial parameter information;

The SRI field indicates the first spatial parameter information in the Y spatial parameter information, and the antenna port field indicates the remaining Y-1 spatial parameter information.
The method according to claim 1, wherein the Y spatial parameter information is obtained by at least one of the following methods:

Determining the Y spatial parameter information according to the Y spatial relationships activated for the PUCCH resource;

The PUCCH resource indication field includes Y C bits of information, respectively indicating Y PUCCH resources, and each PUCCH resource is associated with a spatial relationship for determining a spatial parameter information;

The PUCCH resource indication field includes D bits of information, indicating Y PUCCH resources, and each PUCCH resource is associated with a spatial relationship, which is used to determine a piece of spatial parameter information.
The method according to claim 1, further comprising:

Receive E transmission power control TPC commands, where E is an integer greater than or equal to 1;

The power control adjustment amount corresponding to the closed-loop power control index associated with the Y spatial parameter information is updated according to the E TPC commands.
The method according to claim 15, wherein the E TPC commands are carried in the TPC command field of DCI;

The number of bits in the TPC command field is determined according to at least one of the following:

Is the number of bits of 1 TPC command;

The number of TPC command bits equal to the number of repeated transmissions of PUSCH or PUCCH;

The number of TPC command bits equal to the number of repetitions of PUSCH or PUCCH configured by higher layer signaling;

The number of TPC command bits equal to the maximum number of repetitions of PUSCH or PUCCH configured by higher layer signaling;

The number of TPC command bits equal to the number of spatial parameter information corresponding to the repeated transmission of PUSCH or PUCCH configured by high-layer signaling;

The number of TPC command bits equal to the maximum number of spatial parameter information corresponding to the repeated transmission of PUSCH or PUCCH configured by high-layer signaling;

The number of bits of the TPC command whose number is equal to the number of spatial parameter information;

The number of TPC command bits equal to the number of closed-loop power control indexes corresponding to the repeated transmission of PUSCH or PUCCH;

The number of TPC command bits equal to the maximum number of closed-loop power control indexes for PUSCH or PUCCH transmission configured by high-layer signaling.
The method according to claim 15 or 16, wherein when the TPC command field in the DCI scheduling the repeated transmission of the uplink transmission contains only one TPC command, it includes one of the following:

The TPC command is associated with all closed-loop power control indexes corresponding to the repeated transmission of the uplink transmission;

The TPC command is associated with the closed-loop power control index corresponding to the first repeated transmission in the repeated transmission of the uplink transmission, and the TPC commands of other closed-loop power control indexes corresponding to the repeated transmission of the uplink transmission are 0;

The TPC command is associated with the minimum value in the closed-loop power control index of the repeated transmission of the uplink transmission scheduled this time, and the TPC commands of other closed-loop power control indexes corresponding to the repeated transmission of the uplink transmission are 0.
The method according to claim 15 or 16, wherein, among multiple PUSCH repeated transmissions scheduled at the same time and belonging to the same closed-loop power control index, only the power control adjustment value of the first PUSCH repeated transmission is updated with a TPC command.
The method according to claim 1, further comprising:

Send to the second communication node whether to support PUSCH or PUCCH multiple repeated transmission of power or ability information with different power control parameters.
The method according to claim 1, wherein when the time interval between the non-first repetitive transmission of the uplink transmission and the first repetitive transmission is less than a predetermined time interval, the non-first repetitive transmission and the first retransmission are less than a predetermined time interval. The power or power control parameters of the first repeated transmission are the same.
A power control method, applied to a second communication node, includes:

Send Y spatial parameter information associated with uplink transmission to the first communication node, where the power control parameters associated with the Y spatial parameter information are used to enable the first communication node to determine the sending of X repetitive transmissions of the uplink transmission Power, where X and Y are both integers greater than or equal to 1.
The method according to claim 21, further comprising at least one of the following:

Configure the number of repetitions X0 through high-level signaling;

The number of repetitions X1 is indicated through media access control MAC layer signaling or physical layer signaling.
The method according to claim 22, further comprising: scheduling or triggering the uplink transmission through downlink control information DCI;

The sounding reference signal resource indication in the DCI indicates that the SRI field satisfies at least one of the following:

The number of bits in the SRI field in the DCI is determined by X0;

The parsing mode of the SRI field in the DCI is determined by X1.
The method according to claim 21, further comprising: the Y pieces of spatial parameter information are determined by a set of spatial parameter information;

The spatial parameter information set includes at least one of the following:

Respectively indicating the Y bit blocks of the Y spatial parameter information, and the Y bit blocks have the same number of bits;

Used to respectively indicate the Y bit blocks of the Y spatial parameter information, in the Y bit blocks, the number of bits from the second bit block to the Y-th bit block is less than or equal to the bits of the first bit block number;

Respectively indicating the Y bit blocks of the Y spatial parameter information, in the Y bit blocks, the meaning of the second bit block to the Y bit block is determined according to the meaning of the first bit block;

B-bit information used to indicate the Y pieces of spatial parameter information, and each value of the B-bit information indicates the Y pieces of spatial parameter information.
The method according to claim 21, further comprising: jointly indicating the Y spatial parameter information according to the SRI field and the antenna port field.
The method according to claim 21, further comprising:

Send E transmission power control transmission power control TPC commands to the first communication node, where E is an integer greater than or equal to 1, and the E TPC commands are used to update the closed loop power associated with the Y spatial parameter information. The power control adjustment amount corresponding to the control index.
The method according to claim 26, wherein the E TPC commands are carried in the TPC command field of DCI;

The number of bits in the TPC command field is determined according to at least one of the following:

Is the number of bits of 1 TPC command;

The number of TPC command bits equal to the number of repeated transmissions of the physical uplink shared channel PUSCH or the physical uplink control channel PUCCH;

The number of TPC command bits equal to the number of repetitions of PUSCH or PUCCH configured by higher layer signaling;

The number of TPC command bits equal to the maximum number of repetitions of PUSCH or PUCCH configured by higher layer signaling;

The number of TPC command bits equal to the number of spatial parameter information corresponding to the repeated transmission of PUSCH or PUCCH configured by high-layer signaling;

The number of TPC command bits equal to the maximum number of spatial parameter information corresponding to the repeated transmission of PUSCH or PUCCH configured by high-layer signaling;

The number of bits of the TPC command whose number is equal to the number of spatial parameter information;

The number of TPC command bits equal to the number of closed-loop power control indexes corresponding to the repeated transmission of PUSCH or PUCCH;

The number of TPC command bits equal to the maximum number of closed-loop power control indexes for PUSCH or PUCCH transmission configured by high-layer signaling.
The method according to claim 21, further comprising:

Receiving the ability information of whether to support PUSCH or PUCCH repeated transmission for multiple times or different power control parameters sent by the first communication node.
The method according to claim 21, wherein, in the case that the time interval between the non-first repetitive transmission of the uplink transmission and the first repetitive transmission is less than a predetermined time interval, the non-first repetitive transmission and the first retransmission are less than a predetermined time interval. The power or power control parameters of the first repeated transmission are the same.
A power control device, arranged at a first communication node, includes:

The parameter determination module is configured to determine Y spatial parameter information associated with uplink transmission;

The power control module is configured to determine the transmission power of the X repetitive transmissions of the uplink transmission according to the power control parameters associated with the Y spatial parameter information, where X and Y are both integers greater than or equal to 1.
A power control device, arranged at a second communication node, includes:

The parameter sending module is configured to send Y spatial parameter information associated with uplink transmission to the first communication node, and the power control parameters associated with the Y spatial parameter information are used to enable the first communication node to determine the uplink transmission The transmit power of X repeated transmissions, where X and Y are both integers greater than or equal to 1.
A power control system, including a first communication node and a second communication node;

The first communication node includes the power control device according to claim 30;

The second communication node includes the power control device according to claim 31.