CN117998555A

CN117998555A - Uplink power control method and communication device

Info

Publication number: CN117998555A
Application number: CN202211381632.8A
Authority: CN
Inventors: 刘显达; 高翔; 张哲宁; 胡丹; 张旭; 刘鹍鹏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2024-05-07
Also published as: WO2024094035A1

Abstract

The embodiment of the application provides an uplink power control method and a communication device, which can optimize an uplink power control scheme of terminal equipment to meet the receiving requirement of a plurality of network equipment for collaborative transmission for obtaining channel information. The method comprises the following steps: the first network device generates first indication information and sends the first indication information to the terminal device. The first indication information is used for indicating a path loss compensation proportionality coefficient corresponding to each path loss reference signal in a plurality of path loss reference signals associated with the uplink signal. The path loss compensation proportionality coefficient is used for determining a path loss compensation value by the terminal equipment. The path loss compensation value is used for determining target transmitting power of the uplink signal transmitted by the terminal equipment.

Description

Uplink power control method and communication device

Technical Field

The present application relates to the field of wireless communications, and in particular, to an uplink power control method and a communication device.

Background

In the coordinated joint transmission (coordinated joint transmission, CJT) of Downlink (DL), multiple network devices may simultaneously transmit the same data to the same terminal device on the same time-frequency resource, and multiple signals carrying the data need to be coherently superimposed when reaching the terminal device through respective spatial propagation paths, so as to improve the receiving performance of the terminal device. In order to ensure that the multipath signals are coherently superimposed when reaching the terminal device, a plurality of network devices cooperatively transmitting with each other need to acquire downlink channel information.

To solve this problem, a plurality of network devices cooperatively transmitting with each other may receive a reference signal transmitted by a terminal device on the same time-frequency resource to acquire uplink channel information and determine downlink channel information according to the uplink channel information. However, the uplink power control scheme of the existing terminal device cannot meet the receiving requirement of acquiring channel information by multiple network devices cooperatively transmitting. Therefore, how to optimize the uplink power control scheme of the terminal device to meet the receiving requirement of obtaining the channel information by the multiple network devices cooperatively transmitting is a problem to be solved at present.

Disclosure of Invention

The uplink power control method and the communication device provided by the embodiment of the application can optimize the uplink power control scheme of the terminal equipment so as to meet the receiving requirement of a plurality of network equipment for collaborative transmission for obtaining channel information.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme:

In a first aspect, an uplink power control method is provided, where the method may be performed by a first network device, or may be performed by a component of the first network device, for example, a processor, a chip, or a chip system of the first network device, or may be implemented by a logic module or software that can implement all or part of a function of the first network device. The method is described below as an example of being performed by the first network device. The method comprises the following steps:

The first network device generates first indication information and sends the first indication information to the terminal device. The first indication information is used for indicating a path loss compensation proportionality coefficient corresponding to each path loss reference signal in a plurality of path loss reference signals associated with the uplink signal. The path loss compensation proportionality coefficient is used for determining a path loss compensation value by the terminal equipment. The path loss compensation value is used for determining target transmitting power of the uplink signal transmitted by the terminal equipment.

In the embodiment of the application, the first network equipment can indicate the path loss compensation proportion coefficient meeting the receiving requirements of a plurality of terminal equipment for cooperative transmission to the terminal equipment through the first indication information, so that the terminal equipment can not only improve the target transmitting power of the uplink reference signal, but also reduce the interference to signals transmitted by other terminal equipment in a cell according to the path loss compensation value determined by the path loss compensation proportion coefficient. Therefore, the target sending power of the uplink signal determined by the terminal equipment according to the path loss compensation value can meet the receiving requirement of a plurality of network equipment for collaborative transmission for obtaining the channel information. In summary, based on the uplink power control method provided by the embodiment of the application, the uplink power control scheme of the terminal device can be optimized to meet the receiving requirement of a plurality of network devices for collaborative transmission for obtaining channel information.

In a second aspect, an uplink power control method is provided, where the method may be performed by a terminal device, or may be performed by a component of the terminal device, for example, a processor, a chip, or a chip system of the terminal device, or may be implemented by a logic module or software that can implement all or part of the functions of the terminal device. The following description will be made with an example in which the method is executed by the terminal device. The method comprises the following steps:

The method comprises the steps that terminal equipment receives first indication information from first network equipment, wherein the first indication information is used for indicating a path loss compensation proportionality coefficient corresponding to each path loss reference signal in a plurality of path loss reference signals associated with an uplink signal; the terminal equipment determines a path loss compensation value according to the first indication information; and the terminal equipment determines the target transmitting power for transmitting the uplink signal according to the path loss compensation value.

Optionally, the path loss compensation scaling factor corresponding to each of the plurality of path loss reference signals is used for determining the path loss compensation value by the terminal device. That is, the terminal device may determine the path loss compensation value according to the path loss scaling coefficients corresponding to all the path loss reference signals in the plurality of path loss reference signals.

Or alternatively, the path loss compensation proportionality coefficient corresponding to the target path loss reference signal in the plurality of path loss reference signals is used for determining the path loss compensation value by the terminal equipment. The target path loss reference signal comprises one path loss reference signal in a plurality of path loss reference signals. Or the target path loss reference signal comprises k path loss reference signals in the plurality of path loss reference signals. And k is more than 1 and less than n, n is the number of the path loss reference signals in the plurality of path loss reference signals, and n and k are integers more than 1. That is, the terminal device may determine the path loss compensation value according to the path loss compensation scaling factor corresponding to one or more of the plurality of path loss reference signals.

Alternatively, the path loss compensation scaling factor may be a preset value, or constant, or configured by a high-level parameter.

With reference to the first aspect or the second aspect, in one possible implementation manner, the first indication information is further used to indicate a total path loss compensation factor corresponding to the path loss compensation value. The total path loss compensation factor is used for determining an actual path loss compensation value corresponding to the path loss compensation value. The actual path loss compensation value is used to determine a target transmit power. That is, in the cqt scenario, the actual road loss compensation value may be determined in a manner indicated by two levels of road loss factors (including the total road loss compensation factor and the road loss compensation scaling factor). The total path loss compensation factor can multiplex the quantization mode of the existing path loss compensation factor.

With reference to the first aspect or the second aspect, in one possible implementation manner, the first indication information includes one or more of the following:

identification information of each of the plurality of path loss reference signals;

The total path loss compensation factor corresponding to the path loss compensation value is used for determining an actual path loss compensation value corresponding to the path loss compensation value, and the actual path loss compensation value is used for determining target transmitting power;

Or a first path loss compensation factor, where the first path loss compensation factor includes a path loss compensation scaling factor corresponding to each of the plurality of path loss reference signals.

With reference to the first aspect or the second aspect, in one possible implementation manner, a sum of path loss compensation scaling coefficients corresponding to each path loss reference signal in the plurality of path loss reference signals is less than or equal to 1. That is, the condition can limit the excessive or insufficient path loss compensation value, so that the target transmitting power determined by the terminal device can meet the SNR receiving requirement of the weak station and balance the interference condition of the whole cell.

With reference to the first aspect or the second aspect, in one possible implementation manner, the path loss compensation scaling factor includes a first path loss compensation scaling factor. The first path loss compensation scaling factor corresponding to the ith path loss reference signal is used for multiplying the first path loss measurement value corresponding to the ith path loss reference signal. The first path loss measurement value is a linear value. i epsilon {1, …, n }, n being the number of the path loss reference signals in the plurality of path loss reference signals, n being an integer greater than 1.

Or alternatively, the path loss compensation scaling factor comprises a second path loss compensation scaling factor. The second path loss compensation scaling factor corresponding to the ith path loss reference signal is used for multiplying the second path loss measurement value corresponding to the ith path loss reference signal. The second path loss measurement value is a logarithmic value. i epsilon {1, …, n }, n being the number of the path loss reference signals in the plurality of path loss reference signals, n being an integer greater than 1.

That is, in the embodiment of the present application, the path loss compensation value may be a linear value or a logarithmic value. The path loss compensation scaling factor indicated by the first indication information may be a path loss compensation scaling factor corresponding to a linear value or a path loss compensation scaling factor corresponding to a logarithmic value.

With reference to the first aspect or the second aspect, in one possible implementation manner, the first indication information includes a first path loss compensation factor, where the first path loss compensation factor includes a path loss compensation scaling factor corresponding to each of the plurality of path loss reference signals, and the path loss compensation value is determined according to the first path loss compensation factor. The actual path loss compensation value corresponding to the path loss compensation value is alpha-PL _b,f,c(Q_d1,Q_d2,…,Q_dn), alpha is the total path loss compensation factor corresponding to the path loss compensation value, PL _b,f,c(Q_d1,Q_d2,…,Q_dn) is the path loss compensation value, b is the identification of the active bandwidth part BWP corresponding to the uplink signal, c is the identification of the cell corresponding to the uplink signal, f is the carrier frequency of the cell corresponding to the uplink signal, Q _di in Q _d1,Q_d2,…,Q_dn is the index of the ith path loss reference signal, i epsilon {1,2, …, n }, n is the number of the path loss reference signals in the plurality of path loss reference signals, and n is an integer greater than 1.

With reference to the first aspect or the second aspect, in one possible implementation manner, the path loss compensation scaling factor is a first path loss compensation scaling factor, and the first path loss compensation scaling factor corresponding to the i-th path loss reference signal isThe first path loss measurement value corresponding to the ith path loss reference signal isWherein PL _b,f,c9Q_d1,Q_d2,…,Q_dn), The following relationship is satisfied:

Wherein,

Or alternativelyWherein,That is, due to The path loss compensation value PL _b,f,c(Q_d1,Q_d2,…,Q_dn) may be limited to be too large or too small, so that the target transmission power determined by the terminal device not only meets the SNR receiving requirement of the weak station, but also can balance the interference situation of the whole cell.

With reference to the first aspect or the second aspect, in one possible implementation manner, the path loss compensation scaling factor is a second path loss compensation scaling factor, the second path loss compensation scaling factor corresponding to the ith path loss reference signal is α _i, and the second path loss measurement value corresponding to the ith path loss reference signal is PL _i. Among them, PL _b,f,c9Q_d1,Q_d2,…,Q_dn)、α_i and PL _i satisfy the following relationship:

PL_b,f,c(Q_d1,Q_d2,…,Q_dn)＝α₁·PL₁+α₂·PL₂+…+α_n·PL_n, Wherein alpha ₁α₂…+α_n is less than or equal to 1;

or PL_b,f,c(Q_d1,Q_d2,…,Q_dn)＝α₁·PL₁+α₂·PL₂+…+(1A)·PL_n, where a=α ₁+α₂+…+α_n-1, a+.1.

With reference to the first aspect or the second aspect, in one possible implementation manner, the path loss compensation value is an actual path loss compensation value corresponding to the path loss compensation value. The path loss compensation proportion coefficient is an actual path loss compensation proportion coefficient. That is, in the cqt scenario, the actual path loss compensation value may be determined using the first-order path loss factor (i.e., the path loss compensation scaling factor), and the total path loss compensation factor is not required to be indicated, so that the indication overhead may be saved.

With reference to the first aspect or the second aspect, in one possible implementation manner, the path loss compensation value is an actual path loss compensation value corresponding to the path loss compensation value, the path loss compensation scaling factor is an actual path loss compensation scaling factor, and the first indication information includes a second path loss compensation scaling factor. The second path loss compensation scaling factor comprises an actual path loss compensation scaling factor corresponding to each path loss reference signal in the plurality of path loss reference signals.

Optionally, when the path loss compensation value is an actual path loss compensation value corresponding to the path loss compensation value and the path loss compensation proportionality coefficient is an actual path loss compensation proportionality coefficient, the first indication information further includes identification information of each of the plurality of path loss reference signals.

With reference to the first aspect or the second aspect, in one possible implementation manner, the actual path loss compensation scaling factor includes a first actual path loss compensation scaling factor. The first actual path loss compensation scaling factor corresponding to the ith path loss reference signal is used for multiplying the first path loss measurement value corresponding to the ith path loss reference signal. The first path loss measurement value is a linear value. i epsilon {1, …, n }, n being the number of the path loss reference signals in the plurality of path loss reference signals, n being an integer greater than 1.

Or alternatively, the actual path loss compensation scaling factor comprises a second actual path loss compensation scaling factor. The second actual path loss compensation scaling factor corresponding to the ith path loss reference signal is used for multiplying the second path loss measurement value corresponding to the ith path loss reference signal. The second path loss measurement value is a logarithmic value. Wherein i epsilon {1, …, n }, n is the number of the path loss reference signals in the plurality of path loss reference signals, and n is an integer greater than 1.

With reference to the first aspect or the second aspect, in one possible implementation manner, the path loss compensation value is an actual path loss compensation value corresponding to the path loss compensation value, the path loss compensation scaling factor is an actual path loss compensation scaling factor, the first indication information includes a second path loss compensation factor, the second path loss compensation factor includes an actual path loss compensation scaling factor corresponding to each of the plurality of path loss reference signals, and the path loss compensation value is determined according to the second path loss compensation factor. Wherein the path loss compensation value is PL _b,f,c(Q_d1,Q_d2,…,Q_dn), b is an identifier of an activated BWP corresponding to the uplink signal, c is an identifier of a cell corresponding to the uplink signal, f is a carrier frequency of the cell corresponding to the uplink signal, Q _di in Q _d1,Q_d2,…,Q_dn is an index of an ith path loss reference signal, i e {1,2, …, n }, n is the number of path loss reference signals in the plurality of path loss reference signals, and n is an integer greater than 1.

With reference to the first aspect or the second aspect, in one possible implementation manner, the actual path loss compensation scaling factor is a first actual path loss compensation scaling factor, and the first actual path loss compensation scaling factor corresponding to the ith path loss reference signal isThe first path loss measurement value corresponding to the ith path loss reference signal isWherein PL _b,f,c(Q_d1,Q_d2,…,Q_dn), The following relationship is satisfied:

Or alternatively

With reference to the first aspect or the second aspect, in one possible implementation manner, the actual path loss compensation scaling factor is a second actual path loss compensation scaling factor, the second actual path loss compensation scaling factor corresponding to the ith path loss reference signal is α _i, and the second path loss measurement value corresponding to the ith path loss reference signal is PL _i. Among them, PL _b,f,c(Q_d1,Q_d2,…,Q_dn)、α_i and PL _i satisfy the following relationship:

PL_b,f,c(Q_d1,Q_d2,…,Q_dn)＝α₁·PL₁+α₂·PL₂+…+α_n·PL_n;

Or alternatively PL_b,f,c(Q_d1,Q_d2,…,Q_dn)＝max(α₁·PL₁,α₂·PL₂,…,α_n·PL_n).

With reference to the first aspect or the second aspect, in one possible implementation manner, the first indication information is further used to indicate: and in the case that the path loss compensation value determined by the terminal equipment is greater than or equal to a first threshold value, determining the target transmission power according to the first threshold value. It can be appreciated that in the scheme of determining the path loss compensation value according to the path loss compensation scaling factor, there may be a case where the determined path loss compensation value is excessively large. That is, the target transmission power can be avoided by the limiting condition, that is, the limiting condition can avoid the target transmission power from being too high, and can avoid the target transmission power from being too high, so that the target transmission power determined by the terminal device not only meets the SNR receiving requirement of the weak station, but also can balance the interference condition of the whole cell.

With reference to the first aspect, in a possible implementation manner, the method provided in the first aspect further includes:

The first network device receives second indication information from the terminal device. The second indication information is used for indicating a target route loss reference signal or a target calculation mode of the route loss compensation value used by the terminal equipment for determining the route loss compensation value. The target path loss reference signal comprises one of a plurality of path loss reference signals. That is, the second indication information may inform the first network device that the terminal device determines the target reference signal selected by the path loss compensation value or the target calculation mode of the path loss compensation value. If the first network device determines that the target sending power of the uplink signal sent by the terminal device does not meet the receiving requirement, the first network device can adjust the path loss compensation proportionality coefficients corresponding to the path loss reference signals according to the second indication information and the receiving parameter of the uplink signal, so that the target sending power of the uplink signal meets the receiving requirement of the channel information acquired by the plurality of terminal devices in cooperative transmission.

Optionally, the target calculation mode of the path loss compensation value is as follows: and calculating the maximum value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals, or calculating the minimum value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals, or calculating the average value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals.

the first network device sends third indication information to the terminal device. The third indication information is used for indicating the updated multiple path loss reference signals and the path loss compensation proportionality coefficient corresponding to each path loss reference signal in the updated multiple path loss reference signals;

Or the third indication information is used for indicating the updated path loss compensation proportionality coefficient corresponding to each path loss reference signal in the plurality of path loss reference signals.

Or the third indication information is used for indicating the updated path loss compensation proportionality coefficient corresponding to the target reference signal.

That is, the first network device may send the updated path loss compensation scaling factor and/or the path loss reference signal to the terminal device through the third indication information, so as to further improve the receiving performance of the plurality of network devices cooperatively transmitting by adjusting the target transmission power of the uplink signal sent by the terminal device.

Optionally, the reference signal comprises one of a plurality of path loss reference signals. Or the target path loss reference signal comprises k path loss reference signals in the plurality of path loss reference signals. And k is more than 1 and less than n, n is the number of the path loss reference signals in the plurality of path loss reference signals, and n and k are integers more than 1.

With reference to the second aspect, in one possible implementation manner, the determining, by the terminal device, a path loss compensation value according to the first indication information includes: the terminal equipment determines a target calculation mode of a target path loss reference signal or a path loss compensation value; the terminal equipment determines a path loss compensation proportion coefficient corresponding to the target path loss reference signal according to the first indication information, and determines a path loss compensation value according to the path loss compensation proportion coefficient corresponding to the target path loss reference signal; or the terminal equipment determines the path loss compensation value according to the first indication information and the target calculation mode. The target path loss reference signal comprises one path loss reference signal in a plurality of path loss reference signals. The target calculation mode of the path loss compensation value is as follows: and calculating the maximum value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals, or calculating the minimum value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals, or calculating the average value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals.

With reference to the second aspect, in a possible implementation manner, the method provided in the second aspect further includes:

the terminal device sends the second indication information to the first network device. The second indication information is used for indicating a target route loss reference signal or a target calculation mode of the route loss compensation value used by the terminal equipment for determining the route loss compensation value. The target path loss reference signal comprises one of a plurality of path loss reference signals.

The terminal device receives third indication information from the first network device. The third indication information is used for indicating the updated multiple path loss reference signals and the path loss compensation proportionality coefficient corresponding to each path loss reference signal in the updated multiple path loss reference signals;

Or the third indication information is used for indicating the updated path loss compensation proportionality coefficient corresponding to the target reference signal. The target path loss reference signal comprises one path loss reference signal in a plurality of path loss reference signals. Or the target path loss reference signal comprises k path loss reference signals in the plurality of path loss reference signals. And k is more than 1 and less than n, n is the number of the path loss reference signals in the plurality of path loss reference signals, and n and k are integers more than 1.

In a third aspect, a communication device is provided for implementing the above methods. The communication means may be the first network device of the first aspect or any implementation manner thereof, or an apparatus including the first network device, or an apparatus, such as a chip, included in the first network device; or the communication means may be or comprise the terminal device of the second aspect or any implementation thereof, or comprise the device of the terminal device, or comprise a device such as a chip. The communication device comprises corresponding modules, units or means (means) for realizing the method, and the modules, units or means can be realized by hardware, software or realized by executing corresponding software by hardware. The hardware or software includes one or more modules or units corresponding to the functions described above.

In some possible designs, the communication device may include a processing module and a transceiver module. The transceiver module, which may also be referred to as a transceiver unit, is configured to implement the transmitting and/or receiving functions of any of the above aspects and any possible implementation thereof. The transceiver module may be formed by a transceiver circuit, transceiver or communication interface. The processing module may be configured to implement the processing functions of any of the aspects described above and any possible implementation thereof.

In some possible designs, the transceiver module includes a transmitting module and a receiving module for implementing the transmitting and receiving functions in any of the above aspects and any possible implementation thereof, respectively.

In a fourth aspect, there is provided a communication apparatus comprising: a processor and a memory; the memory is configured to store computer instructions that, when executed by the processor, cause the communication device to perform the method of any of the above aspects. The communication means may be the first network device of the first aspect or any implementation manner thereof, or an apparatus including the first network device, or an apparatus, such as a chip, included in the first network device; or the communication means may be or comprise the terminal device of the second aspect or any implementation thereof, or comprise the device of the terminal device, or comprise a device such as a chip.

In a fifth aspect, there is provided a communication apparatus comprising: a processor and a communication interface; the communication interface is used for communicating with a module outside the communication device; the processor is configured to execute a computer program or instructions to cause the communication device to perform the method of any of the above aspects. The communication means may be the first network device of the first aspect or any implementation manner thereof, or an apparatus including the first network device, or an apparatus, such as a chip, included in the first network device; or the communication means may be or comprise the terminal device of the second aspect or any implementation thereof, or comprise the device of the terminal device, or comprise a device such as a chip.

In a sixth aspect, there is provided a communication apparatus comprising: at least one processor; the processor is configured to execute a computer program or instructions stored in the memory to cause the communication device to perform the method of any of the above aspects. The memory may be coupled to the processor or may be separate from the processor. The communication means may be the first network device of the first aspect or any implementation manner thereof, or an apparatus including the first network device, or an apparatus, such as a chip, included in the first network device; or the communication means may be or comprise the terminal device of the second aspect or any implementation thereof, or comprise the device of the terminal device, or comprise a device such as a chip.

In a seventh aspect, a computer readable storage medium is provided, in which a computer program or instructions are stored which, when run on a communication device, cause the communication device to perform the method of any one of the above aspects or any implementation thereof.

In an eighth aspect, a computer program product is provided comprising instructions which, when run on a communication device, cause the communication device to perform the method of any one of the above aspects or any implementation thereof.

In a ninth aspect, there is provided a communications device (e.g. which may be a chip or a system of chips) comprising a processor for carrying out the functions involved in any one of the above aspects or any implementation thereof.

In some possible designs, the communication device includes a memory for holding necessary program instructions and data.

In some possible designs, the device may be a system-on-chip, may be formed from a chip, or may include a chip and other discrete devices.

It will be appreciated that when the communication device provided in any one of the third to ninth aspects is a chip, the above-described transmitting action/function may be understood as output, and the above-described receiving action/function may be understood as input.

The technical effects of any one of the design manners of the third aspect to the ninth aspect may be referred to the technical effects of the different design manners of the first aspect or the second aspect, and are not described herein.

In a tenth aspect, a communication method is provided, which includes the method described in the first aspect or any implementation manner thereof, and the method described in the second aspect or any implementation manner thereof.

An eleventh aspect provides a communication system comprising the first network device of the above aspect and the terminal device of the above aspect.

Drawings

Fig. 1 is a schematic diagram of SRS transmission in a cqt scenario provided in an embodiment of the present application;

fig. 2 is a schematic diagram of a communication system according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a communication device according to an embodiment of the present application;

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

Fig. 5 is a schematic structural diagram of a base station according to an embodiment of the present application;

fig. 6 is a schematic flow chart of an uplink power control method according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a first network device according to an embodiment of the present application;

Fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

In order to facilitate understanding of the technical solutions provided by the embodiments of the present application, a brief description of related technologies of the present application is first provided. Briefly described as follows:

first, time-frequency domain resources of a New Radio (NR) system

Currently, in both Uplink (UL) and DL transmission schemes of NR systems, orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) techniques may be used. The UL transmission may refer to the terminal device sending an uplink signal to the network device. DL transmission may refer to a network device sending a downlink signal to a terminal device. The principle of the OFDM technology is as follows: dividing a plurality of sub-channels in a frequency domain, carrying out serial-parallel conversion on data to be transmitted to obtain a plurality of groups of data which are transmitted in parallel, and modulating each group of data onto a sub-carrier (subcarrier) of each sub-channel for transmission. Therefore, in the time domain, the data to be transmitted is transmitted through a plurality of subcarriers overlapped in space, wherein the subcarriers are orthogonal to each other, so that the subcarriers can be separated during receiving, and then each subcarrier is respectively demodulated, so that the data to be transmitted is obtained. That is, the minimum frequency domain resource in the NR system is 1 subcarrier, and the minimum time domain resource is 1 OFDM symbol.

1.1 General concepts

The time domain of the NR system is expressed in time units T _c＝1/(Δf_max·N_f). Where Δf _max＝480×10³Hz,N_f =4096.

The constant k=t _s/T_c =64. Where T _s＝1/(Δf_ref·N_f,ref),Δf_ref＝15×10³Hz,N_f,ref = 2048.

1.2 Parameter set (numerology)

The parameter sets supported by the NR system are shown in table 1. In table 1, the first column configures μ for subcarrier spacing (SCS), and the second column indicates subcarrier spacing.

TABLE 1

1.3 Time Domain resources

The uplink transmissions in an NR system may consist of multiple radio frames (frames). Wherein the duration of each radio frame is T _f＝(Δf_maxN_f/100) =10 ms. Each radio frame may consist of ten subframes of duration T _sf＝(Δf_maxN_f/1000) =1 ms. The 10 subframes within one radio frame may be sequentially arranged. Illustratively, the ordering of 10 subframes within a radio frame may be: subframe #0 to subframe #9. It will be appreciated that the numbering and sequencing in subframes # 0- #9 is merely exemplary, e.g., the beginning of the numbering may also be #1, and further that one radio frame includes subframes # 1- #10. For example, the order of 10 subframes may be in a descending order, and further one radio frame includes subframe #9 to subframe #0, which is not particularly limited in the embodiment of the present application.

In an NR system, one subframe may include several slots (slots). Wherein, for subcarrier spacing configuration μ, slots can be numbered in ascending order within one subframePermutation, and numbering/>, in ascending order within one radio frameAnd (5) arrangement. In one time slot there isSuccessive OFDM symbols are shown in tables 2 and 3. Time slot/>, in subframeIs started with OFDM symbol/>, in the same subframeIs aligned in time. For example, in the case where 14 OFDM symbols are included in one slot, the OFDM symbols may be chronologically ordered as: OFDM symbol #0 to OFDM symbol #13.

TABLE 2

TABLE 3 Table 3

1.4 Frequency domain resources

In the NR system, a Resource Element (RE), a Resource Block (RB), and a bandwidth part (BWP) may be divided according to the size of a frequency domain resource, which are described below.

1.4.1、RE

One subcarrier in the frequency domain and one OFDM symbol in the time domain may be defined as RE in the NR system. Where RE is the resource of the minimum granularity of the physical layer.

1.4.2、RB

In the frequency domain, the NR system can define 12 consecutive subcarriers as one RB regardless of subcarrier spacing. Wherein, in the physical layer, the RB may be referred to as a physical resource block (physical resource block, PRB).

1.4.3、BWP

The NR system may support that the terminal device operates only in a part of the system bandwidth, i.e. BWP. Or BWP may be a plurality of RBs within a frequency domain resource corresponding to one carrier supported by one cell. By way of example, a cell covered by a network device (e.g., next-generation radio access network (NG-generation radio access network, RAN) device in an NR system) may support 2 carrier frequencies (hereinafter, abbreviated as carrier #1 and carrier # 2), the cell allocates a bandwidth of 40MHz to carrier #1 and a bandwidth of 60MHz to carrier #2, respectively, BWP may be a 20MHz bandwidth among 40MHz bandwidths corresponding to carrier #1, the 20MHz bandwidth includes a plurality of RBs, and a terminal device may operate only on BWP.

In an NR system, after a terminal device accesses the network through an initial access procedure, the network may configure the terminal device with working BWP through higher layer signaling, and each terminal device may configure 1 to 4 BWP, but only one BWP is active at any time. In addition to radio resource management (radio resource management, RRM) measurements, the terminal device only transceives data on the active BWP.

It should be understood that in the embodiments of the present application, "carrier frequency", "carrier wave", "carrier frequency", and "frequency point" are the same. In other words, the "carrier frequency", "carrier wave", "carrier frequency", and "frequency point" may be expressed interchangeably, and are generally described herein, and are not described in detail herein.

It should also be understood that in embodiments of the present application, the meaning between "number" and "index" is the same. In other words, the "number" and the "index" may be expressed interchangeably, and are described in detail herein, and are not described in detail herein.

Second, reference signal

In the embodiment of the present application, the reference signal may include an uplink reference signal and a downlink reference signal. The uplink reference signal may be used to obtain uplink channel information, and the downlink reference signal may be used to obtain downlink channel information.

Optionally, the uplink reference signal may also be used to determine downlink channel information. For a communication system with reciprocity of uplink and downlink channels (for example, a time division duplex (time division duplex, TDD) communication system), since the uplink transmission and the downlink transmission use the same channel, the downlink channel information can be determined by the uplink channel information acquired by the uplink reference signal.

Optionally, the uplink reference signal may include: a Sounding REFERENCE SIGNAL (SRS), a positioning Sounding Reference Signal (SRS), an uplink demodulation reference signal (UL demodulation REFERENCE SIGNAL, UL-DMRS), or other uplink reference signals in the future, which is not particularly limited in the embodiment of the present application.

Alternatively, the downlink reference signal may include: the synchronization signal/physical layer broadcast channel block (synchronization signal/physical broadcast channel block, SSB), channel state information reference signal (CHANNEL STATE information REFERENCE SIGNAL, CSI-RS), DL-DMRS, tracking reference signal (TRACKING REFERENCE SIGNAL, TRS), positioning Reference Signal (PRS), or other future downlink reference signals, etc., which are not particularly limited in the embodiments of the present application.

Third, reference signal configuration

In the embodiment of the application, the reference signal configuration may include the related parameters of the received or transmitted reference signal. Wherein the reference signal configuration may comprise resources for the terminal device to transmit or receive the reference signal. The resources may include time domain resources and/or frequency domain resources.

The beam and antenna ports (antenna ports) are described before reference signal resources are described.

In NR systems, the concept of beam is introduced. Wherein a beam is a communication resource. The beam may be a wide beam, or a narrow beam, or other type of beam. The technique of forming the beam may be a beam forming technique or other means of technique. The beamforming technique may be embodied as a digital beamforming technique, an analog beamforming technique, a hybrid digital/analog beamforming technique. Different beams may be considered different resources. The same information or different information may be transmitted through different beams. Alternatively, a plurality of beams having the same or similar communication characteristics may be regarded as one beam. A beam may be formed by one or more antenna ports for transmitting data channels, control channels, reference signals, etc. For example, a transmit beam may refer to a distribution of signal strengths formed in spatially different directions after a signal is transmitted through an antenna, and a receive beam may refer to a distribution of antenna arrays to strengthen or weaken reception of a wireless signal in spatially different directions. It is understood that one or more antenna ports forming a beam may also be considered as a set of antenna ports. In the current NR protocol, the beams may be represented by an antenna port quasi co-located (quasi colocation, QCL) relationship, specifically, the signals of two co-beams have a QCL relationship with respect to the spatial reception parameter (spatial Rx parameter), i.e., QCL-Type D: { spatial Rx parameter } in the protocol. The beam may be specifically represented in the protocol by an identification of various signals, such as a resource identification (identity, ID) of CSI-RS, a resource ID of SSB, a resource ID of TRS, a resource ID of PRS, or a resource ID of SRS.

It should also be understood that the antenna port described above is a logical concept that does not have a one-to-one correspondence with a physical antenna, and that an antenna port is a logical unit formed by one or more physical antennas that transmit a signal or signal stream. Wherein, the antenna ports can be distinguished by reference signals: in DL transmission, downlink channels are in one-to-one correspondence with downlink reference signals; in UL transmission, the uplink channels are in one-to-one correspondence with the uplink reference signals. If a reference signal is transmitted through multiple physical antennas, the multiple physical antennas correspond to the same antenna port; if two different reference signals are transmitted through the same physical root antenna, then the antenna corresponds to two independent antenna ports. For example, an antenna port corresponding to the CSI-RS may be referred to as a CSI-RS port, and an antenna port corresponding to the SRS may be referred to as an SRS port.

That is, the channel experienced by the signal transmitted via the antenna port can be estimated by the reference signal corresponding to the antenna port.

It will be appreciated that since the beams may be represented in the protocol specifically by the identity of the various signals, reference signal resources may be used in the NR system for representing the beams. The reference signal may be configured in the form of a resource, and one reference signal resource is a configuration unit. The reference signal configuration may comprise a plurality of configuration units, i.e. a plurality of reference signal resources. The reference signal configuration will be described below taking SRS configuration as an example.

SRS configuration: including one or more SRS resource sets (SRS resources), or one or more SRS resources. Wherein one SRS resource set may include one or more SRS resources. An SRS resource may include one or more of the following:

(1) Number of antenna ports: in the NR system, one SRS resource may configure 1,2, 4, or 8 antenna ports (hereinafter, SRS ports).

(2) Time domain position: an index, or starting position, of the occupied OFDM symbol, etc. may be included. The index of the OFDM symbol may indicate the number of OFDM symbols occupied by SRS resources, one SRS resource may configure 1, 2,4, 8, or 12 OFDM symbols, and the starting position may be given by field startPosition.

(3) Frequency domain location: an index of occupied RBs may be included. In the NR system, one SRS resource may occupy 4-272 RBs.

(4) Time domain type: in an NR system, SRS resources can be classified into periodic (periodic), semi-persistent, or aperiodic (aperiodic) types. For semi-persistent or periodic UL-SRS resources, among other things, SRS resources may include a period specified for a terminal device and a slot offset index (otherwise referred to as a slot offset).

Optionally, the SRS resource set may further include an SRS resource set identifier (e.g. SRS resource set ID), the SRS resource further includes an SRS resource identifier (e.g. SRS resource ID), a repetition factor of SRS transmission (field repetitionFactor), an offset of the SRS resource in the frequency domain, and a frequency modulation configuration of the SRS resource, and so on, and a detailed description may refer to technical specification (technology standard, TS) 38.211, which is not repeated herein.

It should be understood that, in the case of acquiring the downlink channel information by using SRS, the network device needs to obtain the channel information of each receiving antenna of the terminal device, and further, each SRS port corresponds to one receiving antenna of the terminal device. The antenna configuration of the terminal device may include two types, one is that the number of transmitting antennas is equal to the number of receiving antennas, that is, n transmitting antennas and n receiving antennas (abbreviated as nTnR), and the other is that the number of transmitting antennas is not equal to the number of receiving antennas (abbreviated as nTmR, n+.m).

Optionally, for the terminal device configured by nTnR, one SRS resource may configure n SRS ports, each SRS port corresponding to each receiving/transmitting antenna of the terminal device. In an exemplary embodiment, for a terminal device configured by 4T4R, one SRS resource configuration includes 4 SRS ports.

Optionally, for the terminal device configured by nTmR, m/n SRS resources are generally configured, where the m/n SRS resources may correspond to m receiving antennas of the terminal device, and each SRS resource may configure n SRS ports. For example, for a terminal device configured by 2T4R, 2 SRS resources may be configured, where the 2 SRS resources may correspond to 4 receiving antennas of the terminal device, and each SRS resource may be configured with 2 SRS ports.

It should be appreciated that the above reference signal configuration may be configured by the network. The network device may send the uplink reference signal configuration and the downlink reference signal configuration to the terminal device through high-layer signaling. The higher layer signaling may be, for example, radio resource control (radio resource control, RRC) signaling, or medium access control (MEDIA ACCESS control, MAC) layer signaling, which is not particularly limited by the embodiments of the present application.

Fourth, uplink power control scheme

The terminal device may send the uplink reference signal on the configured active BWP. The following describes an existing uplink power control scheme by taking a terminal device to transmit SRS as an example.

The transmission power at which the terminal device transmits the SRS is defined in TS 38.213. The transmission power P _SRS,b,f,c(i,q_s, i) of the terminal device for transmitting the SRS at the transmission timing i, the serving cell c, the carrier frequency f, and the activation BWPb may be determined by the formula (1). The transmission opportunity is a time domain position of the SRS in the SRS resource, and i may be an index (e.g., a slot index or a symbol index) of the time domain position of the SRS in the radio frame. c may be the identity of the serving cell. f is the carrier frequency of serving cell c. b is an index to activate BWP. q _s is an index of the SRS resource set or the SRS resource set ID. l is the index of the power control state.

Wherein, each parameter in the formula (1) is defined as follows:

p _CMAX,f,c (i): the maximum transmission power allocated by the terminal device at transmission timing i, serving cell c, and carrier frequency f is indicated, and P _CMAX,f,c (i) is related to the transmission capability of the terminal device and carrier frequency/serving cell.

P _{O_SRS,b,f,c}(q_s): the nominal power or power reference value is indicated as the target received power value expected by the network device. Wherein P _{O_sRS,b,f,c}(q_s) may be determined from the parameter set of the higher layer signaling configuration.

Mu: indicating a subcarrier spacing configuration.

M _SRS,b,f,c (i): indicating the number of RBs occupied by SRS resources on transmit occasion i, serving cell c, carrier frequency f, and activation BWPb, M _SRS,b,f,c (i) can be determined by the bandwidth of the current activation BWPb and μ.

Alpha _SRS,b,f,c(q_s): indicating the corresponding path loss compensation factor for SRS on serving cell c, carrier frequency f, and active BWPb. Where α _SRS,b,f,c(q_s) can be 0,1, for example {0,0.4,0.5,0.6,0.7,0.8,0.9,1}. α _SRS,b,f,c(q_s) may be configured by RRC signaling. Illustratively, alpha _SRS,b,f,c(q_s) may be indicated by the parameter Alpha = ENUMERATED { Alpha0, alpha04, alpha05, alpha06, alpha07, alpha08, alpha09, alpha1}, alpha being the RRC variable name, ENUMERATED characterizing the quantized value of Alpha _SRS,b,f,c(q_s). It will be appreciated that the indication overhead of a _SRS,b,f,c(q_s) may be reduced by configuring the corresponding quantized value of a _SRS,b,f,c(q_s).

PL _b,f,c(q_d): the corresponding path loss compensation values in decibels (dB) for SRS on serving cell c, carrier frequency f, and active BWPb are shown. PL _b,f,c(q_d) may be a path loss measurement value corresponding to the index q _d of the path loss reference signal (path loss REFERENCE SIGNAL, PL-RS), and PL _b,f,c(q_d) is a value greater than 0. The path loss reference signal may be a downlink reference signal in the above "reference signal", such as SSB or CSI-RS. The index q _d of each path loss reference signal may be mapped to an index of one path loss reference signal resource. Illustratively, the Index q _d of a path loss reference signal may be mapped to an Index of an SSB resource, which may be configured by the parameter SSB-Index; or the Index q _d of one path loss reference signal may be mapped to an Index of one CSI-RS resource, and the Index of the CSI-RS resource may be configured by the parameter CSI-RS-Index.

The path loss measurement value Pathloss can be determined by the formula (2), and the formula (2) is as follows:

pathloss= referenceSignalPower-HIGHER LAYER FILTERED RSRP formula (2)

In formula (2), a parameter referenceSignalPower represents the transmission power of a downlink reference signal corresponding to a path loss reference signal configured by higher layer signaling. The parameter HIGHER LAYER FILTERED RSRP indicates the received power after high-layer filtering when the terminal device receives the downlink reference signal.

It can be appreciated that the index q _d of the path loss reference signal may be in one-to-one correspondence with the path loss reference signal resource ID. That is, the index q _d of the path loss reference signal may be determined according to the path loss reference signal resource ID, or the path loss reference signal resource ID may be determined according to the index q _d of the path loss reference signal.

Alpha _SRs,b,f,c(q_s)·PL_b,f,c(q_d): representing PL _b,f,c(q_d) corresponding to the actual path loss compensation value.

H _b,f,c (i, l): indicating the closed loop control parameters of the SRS on the serving cell c, carrier frequency f, activation BWPb. Wherein the closed loop control parameter is a dynamic power adjustment amount indicated by the network device through downlink control information (downlink control information, DCI). The power control of the SRS may follow a closed loop power control instruction corresponding to a Physical Uplink Shared Channel (PUSCH) SHARED CHANNEL, or may be determined by a separate closed loop power control instruction, and may be specifically referred to the related description in TS38.213, which is not described herein.

It should be understood that, in the uplink power control scheme, the path loss compensation value PL _b,f,c(q_d) is determined according to the measured path loss reference signal corresponding to one cell or one network device. That is, the path loss compensation value PL _b,f,c(q_d) corresponds to a path loss compensation value between the terminal device and one network device.

Fifth, downstream CJT

In the embodiment of the present application, the downlink cqt may refer to that multiple network devices (also may be referred to as sites) send the same data to the same terminal device on the same time-frequency resource at the same time, and multiple signals carrying the data need to be coherently superimposed when reaching the terminal device through respective spatial propagation paths, so as to improve the receiving performance of the terminal device. The coherent superposition may mean that multiple signals are superimposed in the same direction, so that the power of the signal received by the terminal device is increased, and further, the power gain is obtained, so that the receiving performance of the terminal device can be improved.

It will be appreciated that to ensure coherent addition of multiple signals, the phase and/or frequency offset between the multiple signals should be reduced. The network devices that cooperate with each other to obtain the corresponding downlink channel information are required to process the data to be transmitted, so as to reduce the phase difference and/or frequency offset between the multipath signals. For example, each network device may use a precoding technology, and process the data to be sent by means of a precoding matrix matched with the respective downlink channel information, so that the precoded data to be sent is adapted to the requirement of coherent superposition, and the influence of phase difference and/or frequency offset is eliminated, thereby ensuring that multiple signals arrive at the terminal device and are coherently superimposed. In addition, considering that the influence of the channel on the phase and frequency can change with time and frequency, the downlink channel information corresponding to each network device needs to be obtained by measuring the reference signals on the same time-frequency resource.

In order to ensure that a plurality of network devices cooperatively transmitting with each other can acquire downlink channel information corresponding to each other, uplink reference signals sent by terminal devices can be utilized to acquire the downlink channel information by utilizing reciprocity of uplink and downlink channels. The method comprises the following steps: the terminal device sends an uplink reference signal (e.g. SRS) for downlink channel measurement, and multiple network devices cooperatively transmitting with each other may receive the uplink reference signal of the terminal device on the same time-frequency resource, thereby obtaining uplink channel information, and determine downlink channel information according to the uplink channel information.

However, as described in the "uplink power control scheme", the transmission power of the existing uplink reference signal is determined by the path loss reference signal issued by one cell or network device, which can only meet the receiving requirement of one network device for obtaining the channel information, but cannot meet the receiving requirement of multiple network devices for obtaining the channel information in cooperative transmission.

Further, the SRS transmission in the cqt scenario shown in fig. 1 is taken as an example. As shown in fig. 1, the network device #1 and the network device #2 are two cooperative network devices in the CJT scenario, the terminal device #1 is a target terminal device in the CJT scenario, that is, the network device #1 and the network device #2 send the same data to the terminal device #1 on the same time-frequency resource at the same time, the terminal device #2 is a terminal device that does not participate in the CJT, and the network device #1 provides services for the terminal device #2. The path loss compensation value PL _b,f,c(q_d between the terminal device #1 and the network device # 1) is the path loss compensation value #1, and the path loss compensation value PL _b,f,c(q_d between the terminal device #1 and the network device # 2) is the path loss compensation value #2. Assuming that the wireless propagation environment between the terminal device #1 and the network device #1 is good (the path loss is small), the wireless propagation environment between the terminal device #1 and the network device #2 is poor (the path loss is large), and thus the path loss compensation value #1 is smaller than the path loss compensation value #2. When the SRS transmitted by the terminal device #1 arrives at the network device #1 and the network device #2 through the air interface channel respectively, if the terminal device #1 determines the transmission power of the SRS according to the path loss compensation value #1, the transmission power of the SRS may meet the receiving requirement of the network device #1, but the transmission power of the SRS is smaller for the network device #2 (for example, the signal-to-noise ratio (SNR) is too low), and does not meet the SNR receiving requirement of the network device # 2; if the terminal device #1 determines the SRS transmission power according to the path loss compensation value #2, the SRS transmission power may meet the receiving requirement of the network device #2, but the SRS transmission power is larger for the network device #1 and may drown out the signal transmitted by the terminal device #2, that is, the excessive SRS transmission power may increase the interference of the network device #1 to receive the signals of other terminal devices, and does not meet the interference receiving requirement of the network device # 1.

Based on this, the embodiment of the application provides an uplink power control method, which can optimize the uplink power control scheme of the terminal equipment to meet the receiving requirement of a plurality of network equipment for collaborative transmission for obtaining channel information.

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

In order to facilitate understanding of the embodiments of the present application, the following description is made before describing the embodiments of the present application.

1. For easy understanding and description, first, the main parameters involved in the embodiments of the present application are respectively described as follows:

PL _b,f,c(Q_d1,Q_d2,…,Q_dn): the path loss compensation value may be represented. Wherein, Q _di in Q _d1,Q_d2,…,Q_dn is an index of the i-th path loss reference signal, i e {1,2, …, n }, n is the number of the path loss reference signals in the plurality of path loss reference signals associated with the uplink signal, and n is an integer greater than 1. The path loss compensation value may be an actual path loss compensation value, and PL _b,f,c(Q_d1,Q_d2,…,Q_dn) may represent the actual path loss compensation value in the case where the path loss compensation value is the actual path loss compensation value.

Alpha: the total path loss compensation factor can be represented, and the value range of alpha is [0,1].

Alpha PL _b,f,c(Q_d1,Q_d2,…,Q_dn): in the case where the road loss compensation value is not the actual road loss compensation value, the actual road loss compensation value may be represented.

P: the target transmit power may be represented.

Road loss compensation scaling factor: the path loss compensation scaling factor comprises a first path loss compensation scaling factor or a second path loss compensation scaling factor. Wherein, the first path loss compensation proportionality coefficient corresponding to the ith path loss reference signal can be usedThe second path loss compensation scaling factor corresponding to the i-th path loss reference signal may be represented by α _i.

2. In the embodiment of the present application, for convenience of description, when numbering is referred to, numbering may be continued from 1. For example, the index of the plurality of path loss reference signals is Q _d1,Q_d2,…,Q_dn. Similarly, the first path loss proportionality coefficient corresponding to each path loss reference signal in the plurality of path loss reference signals isAnd are not illustrated here. Of course, the specific implementation is not limited to this, and for example, the serial numbers may be numbered from 0. For example, the index of the plurality of path loss reference signals is Q _d0,Q_d1,…,Q_dn-1. It should be understood that the foregoing is provided for the purpose of illustrating the technical solutions provided by the embodiments of the present application, and is not intended to limit the scope of the present application. /(I)

3. In the embodiment of the present application, the multiple parameters relate to "serving cell c, carrier frequency f, and activation BWPb", such as the path loss compensation value PL _b,f,c(Q_d1,Q_d2,…,Q_dn. Since "serving cell c, carrier frequency f, and activation BWPb" are related to time-frequency resources for transmitting an uplink signal, when parameters related to "serving cell c, carrier frequency f, and activation BWPb" are described in the case of being defined as parameters corresponding to the uplink signal, repeated description of "serving cell c, carrier frequency f, and activation BWPb" may not be required, and for example, "PL _b,f,c(Q_d1,Q_d2,…,Q_dn" and "PL (Q _d1,Q_d2,…,Q_dn)" may be expressed interchangeably.

4. In the embodiment of the application, the indication can comprise direct indication and indirect indication, and can also comprise explicit indication and implicit indication. The information indicated by a certain information (hereinafter, first indication information) is referred to as information to be indicated, and in a specific implementation process, there are various ways of indicating the information to be indicated, for example, but not limited to, the information to be indicated may be directly indicated, such as the information to be indicated itself or an index of the information to be indicated. The information to be indicated can also be indicated indirectly by indicating other information, wherein the other information and the information to be indicated have an association relation. It is also possible to indicate only a part of the information to be indicated, while other parts of the information to be indicated are known or agreed in advance. For example, the indication of the specific information may also be achieved by means of a pre-agreed (e.g., protocol-specified) arrangement sequence of the respective information, thereby reducing the indication overhead to some extent. And meanwhile, the universal part of each information can be identified and indicated uniformly, so that the indication cost caused by independently indicating the same information is reduced.

The specific indication means may be any of various existing indication means, such as, but not limited to, the above indication means, various combinations thereof, and the like. Specific details of various indications may be referred to the prior art and are not described herein. As can be seen from the above, for example, when multiple pieces of information of the same type need to be indicated, different manners of indication of different pieces of information may occur. In a specific implementation process, a required indication mode can be selected according to specific needs, and the selected indication mode is not limited in the embodiment of the present application, so that the indication mode according to the embodiment of the present application is understood to cover various methods that can enable a party to be indicated to learn information to be indicated.

It should be understood that the information to be indicated may be sent together as a whole or may be sent separately in a plurality of sub-information, and the sending periods and/or sending timings of these sub-information may be the same or different. Specific transmission method the embodiment of the present application is not limited. The transmission period and/or the transmission timing of the sub-information may be predefined, for example, predefined according to a protocol, or may be configured by the transmitting end device by transmitting configuration information to the receiving end device. The configuration information may include, for example, but not limited to, one or a combination of at least two of radio resource control signaling, such as RRC signaling, MAC layer signaling, physical layer signaling, or DCI.

5. The "pre-defining" or "pre-configuring" may be implemented by pre-storing corresponding codes, tables or other manners that may be used to indicate relevant information in devices (including, for example, the terminal device and the first network device), and the embodiments of the present application are not limited to specific implementation manners thereof. Where "save" may refer to saving in one or more memories. The one or more memories may be provided separately or may be integrated in an encoder or decoder, processor, or communication device. The one or more memories may also be provided separately as part of a decoder, processor, or communication device. The type of memory may be any form of storage medium, and embodiments of the application are not limited in this regard.

6. The "protocol" referred to in the embodiments of the present application may refer to a standard protocol in the communication field, and may include, for example, a long term evolution (long term evolution, LTE) protocol, an NR protocol, and related protocols applied in future communication systems, which are not limited in the embodiments of the present application.

7. In the embodiment of the present application, the descriptions of "when … …", "in … …", "if" and "if" refer to that the device (e.g., the terminal device or the first network device) will perform the corresponding processing under some objective condition, which is not limited in time, and does not require that the device (e.g., the terminal device or the first network device) must perform the judging action when implementing, and does not mean that there is any other limitation.

8. In the description of the present application, unless otherwise indicated, "/" means that the objects associated in tandem are in a "or" relationship, e.g., A/B may represent A or B; the "and/or" in the embodiment of the present application is merely an association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a alone, a and B together, and B alone, wherein A, B may be singular or plural. Also, in the description of the embodiments of the present application, unless otherwise indicated, "plurality" means two or more than two. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural. In addition, in order to facilitate the clear description of the technical solution of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", etc. are used to distinguish the same item or similar items having substantially the same function and effect. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ. Meanwhile, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion that may be readily understood.

The technical scheme of the embodiment of the application can be applied to various communication systems. For example: orthogonal frequency division multiple access (orthogonal frequency-division multiple access, OFDMA), single carrier frequency division multiple access (SINGLE CARRIER FDMA, SC-FDMA), and other systems, among others. The term "system" may be used interchangeably with "network". The OFDMA system may implement wireless technologies such as evolved universal wireless terrestrial access (evolved universal terrestrial radio access, E-UTRA), ultra mobile broadband (ultra mobile broadband, UMB), and the like. E-UTRA is an evolved version of the universal mobile telecommunications system (universal mobile telecommunications system, UMTS). The third generation partnership project (3rd generation partnership project,3GPP) is in LTE and various versions of LTE-based evolution using a new version of E-UTRA. The 5G communication system is the next generation communication system under study. Wherein, the 5G communication system comprises a 5G mobile communication system of a non-independent Networking (NSA) or a 5G mobile communication system of an independent networking (standalone, SA) or a 5G mobile communication system of NSA and a 5G mobile communication system of SA. In addition, the communication system can be also suitable for future communication technology, and the technical scheme provided by the embodiment of the application is applicable. The above-mentioned communication system to which the present application is applied is merely illustrative, and the communication system to which the present application is applied is not limited thereto, and is generally described herein, and will not be described in detail.

In addition, the communication architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided by the embodiments of the present application, and as a person of ordinary skill in the art can know, with evolution of the communication architecture and occurrence of a new service scenario, the technical solution provided by the embodiments of the present application is also applicable to similar technical problems.

As shown in fig. 2, a communication system according to an embodiment of the present application includes a first network device and a terminal device. Wherein the first network device cooperates with one of a plurality of network devices transmitting with each other. The plurality of network devices cooperatively transmitted with each other may be a plurality of network devices in a CJT scenario.

In a possible implementation manner, the first network device generates first indication information and sends the first indication information to the terminal device. The first indication information is used for indicating a path loss compensation proportionality coefficient corresponding to each path loss reference signal in a plurality of path loss reference signals associated with the uplink signal. The path loss compensation proportionality coefficient is used for determining a path loss compensation value by the terminal equipment. The path loss compensation value is used for determining target transmitting power of the uplink signal transmitted by the terminal equipment.

Specific implementations of the above schemes will be described in detail in the following embodiments, which are not described herein.

Alternatively, the terminal device in the embodiment of the present application may be a device for implementing a wireless communication function, for example, a terminal or a chip or the like that may be used in the terminal. The terminal may be a User Equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a remote terminal, a mobile device, a wireless communication device, a terminal agent, a terminal apparatus, or the like in a 5G network or a future evolved public land mobile network (public land mobile network, PLMN). An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal DIGITAL ASSISTANT, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device or a wearable device, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (SELF DRIVING), a wireless terminal in telemedicine (remote medical), a wireless terminal in smart grid (SMART GRID), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (SMART CITY), a wireless terminal in smart home (smart home), etc. Alternatively, the terminal device may be mobile or fixed.

Alternatively, the network device (e.g., the first network device) in the embodiment of the present application may be a device that communicates with the terminal device. The network device may include a transmission reception point (transmission and reception point, TRP), a base station, a remote radio unit (remote radio unit, RRU) or baseband unit (BBU) of a separate base station (also referred to as Digital Unit (DU)), a broadband network service gateway (broadband network gateway, BNG), an aggregation switch, a non-3 GPP access device, a relay station or access point, and so on. In fig. 2, the first network device is illustrated as an example of a base station, and is generally described herein, which is not described herein. In addition, the base station in the embodiment of the present application may be a base transceiver station (base transceiver station, BTS) in a global system for mobile communications (global system for mobile communication, GSM) or a code division multiple access (code division multiple access, CDMA) network, an NB (Node B) in a wideband code division multiple access (wideband code division multiple access, WCDMA), an eNB or eNodeB (evolutional NodeB) in LTE, a radio controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or a base station in a 5G communication system (for example, a next generation Node B (gnobb, gNB)), or a base station in a future evolution network, etc., which are not particularly limited herein.

Optionally, in some deployments, the gNB may include a centralized unit (centralized unit, CU) and DUs. The gNB may also include an active antenna unit (ACTIVE ANTENNA units, AAU). The CU implements part of the functionality of the gNB and the DU implements part of the functionality of the gNB, e.g. the CU is responsible for handling non-real time protocols and services, implementing the functions of the RRC, packet data convergence layer protocol (PACKET DATA convergence protocol, PDCP) layer. The DU is responsible for handling physical layer protocols and real-time services, and implements functions of a radio link control (radio link control, RLC) layer, a MAC layer, and a Physical (PHY) layer. The AAU realizes part of physical layer processing function, radio frequency processing and related functions of the active antenna. Since the information of the RRC layer may be eventually changed into or converted from the information of the PHY layer, under this architecture, higher layer signaling, such as RRC layer signaling, may also be considered to be transmitted by the DU or by the du+aau. It is understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into network devices in an access network (radio access network, RAN), or may be divided into network devices in a Core Network (CN), which the present application is not limited to.

Alternatively, in the embodiment of the present application, each of the first network device and the terminal device may be configured with multiple antennas to support Massive multiple input multiple output (Massive multiple input multiple output, massive-MIMO) technology. Further, the network device and the terminal device may support both single-user MIMO (SU-MIMO) technology and multi-user MIMO (MU-MIMO). Among other things, MU-MIMO techniques may be implemented based on spatial division multiple access (space division multiple access, SDMA) techniques. The network device and the terminal device may also flexibly support single-in single-out (Single Input Single Output, SISO) technology, single-in multiple-out (Single Input multiple Output, SIMO) and multiple-in single-out (multiple input single output, MISO) technology due to the configuration of multiple antennas, to implement various diversity (e.g., without limitation, transmit diversity and receive diversity) and multiplexing technologies, which may include, without limitation, transmit diversity (TRANSMIT DIVERSITY, TD) technology and receive diversity (RECEIVE DIVERSITY, RD) technology, and the multiplexing technology may be spatial multiplexing (spatial multiplexing) technology.

Alternatively, the first network device and the terminal device in the embodiments of the present application may also be referred to as a communication apparatus, which may be a general-purpose device or a special-purpose device, which is not specifically limited in the embodiments of the present application.

Optionally, the related functions of the terminal device or the first network device in the embodiment of the present application may be implemented by one device, or may be implemented by multiple devices together, or may be implemented by one or more functional modules in one device, which is not specifically limited in the embodiment of the present application. It will be appreciated that the above described functionality may be either a network element in a hardware device, or a software functionality running on dedicated hardware, or a combination of hardware and software, or a virtualized functionality instantiated on a platform (e.g., a cloud platform).

For example, the related functions of the terminal device or the first network device in the embodiment of the present application may be implemented by the communication apparatus 300 in fig. 3. Fig. 3 is a schematic structural diagram of a communication device 300 according to an embodiment of the present application. The communication device 300 includes one or more processors 301, communication lines 302, and at least one communication interface (shown in fig. 3 as including communication interface 304 and one processor 301 by way of example only), and optionally may also include memory 303.

The processor 301 may be a general purpose central processing unit (central processing unit, CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the programs of the present application.

Communication line 302 may include a passageway for connecting between the various components.

The communication interface 304, which may be a transceiver module, is used to communicate with other devices or communication networks, such as ethernet, RAN, wireless local area network (wireless local area networks, WLAN), etc. For example, the transceiver module may be a device such as a transceiver or a transceiver. Alternatively, the communication interface 304 may be a transceiver circuit located in the processor 301, so as to implement signal input and signal output of the processor.

The memory 303 may be a device having a memory function. For example, but not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (ELECTRICALLY ERASABLE PROGRAMMABLE READ-only memory, EEPROM), a compact disc read-only memory (compact disc read-only memory) or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be stand alone and be coupled to the processor via communication line 302. The memory may also be integrated with the processor.

The memory 303 is used for storing computer-executable instructions for executing the present application, and is controlled by the processor 301. The processor 301 is configured to execute computer-implemented instructions stored in the memory 303, thereby implementing the uplink power control method provided in the embodiment of the present application.

Alternatively, in the embodiment of the present application, the processor 301 may execute the functions related to the processing of the uplink power control method provided in the embodiment of the present application, and the communication interface 304 is responsible for communicating with other devices or communication networks, which is not specifically limited in the embodiment of the present application.

Optionally, the memory 303 in the embodiment of the present application may also be used to store information or parameters described in the following embodiment, such as the first indication information.

Computer-executable instructions in embodiments of the application may also be referred to as application code, and embodiments of the application are not limited in this regard.

In a particular implementation, as one embodiment, processor 301 may include one or more CPUs, such as CPU0 and CPU1 of FIG. 3.

In a particular implementation, as one embodiment, the communication apparatus 300 may include a plurality of processors, such as the processor 301 and the processor 308 in fig. 3. Each of these processors may be a single-core (single-CPU) processor or may be a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

In a specific implementation, as an embodiment, the communication apparatus 300 may further include an output device 305 and an input device 306. The output device 305 communicates with the processor 301 and may display information in a variety of ways.

The communication device 300 may be a general-purpose device or a special-purpose device. For example, the communication apparatus 300 may be a desktop computer, a portable computer, a web server, a personal computer (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or a device having a similar structure as in fig. 3. The embodiment of the present application is not limited to the type of communication device 300.

In connection with the schematic structural diagram of the communication apparatus 300 shown in fig. 3, taking the communication apparatus 300 as the terminal device in fig. 3 as an example, fig. 4 is a specific structural form of the terminal device according to the embodiment of the present application.

Wherein in some embodiments the functionality of processor 301 in fig. 3 may be implemented by processor 410 in fig. 4.

In some embodiments, the functionality of the communication interface 304 in fig. 3 may be implemented by the antenna 1, the antenna 2, the mobile communication module 450, the wireless communication module 460, etc. in fig. 4.

Wherein the antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the terminal device may be used to cover a single or multiple communication bands. Different antennas may also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed into a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 450 may provide a solution for wireless communication including 2G/3G/4G/5G etc. applied on a terminal device. The mobile communication module 450 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA), or the like. The mobile communication module 450 may receive electromagnetic waves from the antenna 1, perform processes such as filtering, amplifying, and the like on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 450 may amplify the signal modulated by the modem processor, and convert the signal into electromagnetic waves through the antenna 1 to radiate the electromagnetic waves. In some embodiments, at least some of the functional modules of the mobile communication module 450 may be disposed in the processor 410. In some embodiments, at least some of the functional modules of the mobile communication module 450 may be disposed in the same device as at least some of the modules of the processor 410.

The wireless communication module 460 may be one or more devices that integrate at least one communication processing module. The wireless communication module 460 receives electromagnetic waves via the antenna 2, frequency modulates and filters the electromagnetic wave signals, and transmits the processed signals to the processor 410. The wireless communication module 460 may also receive a signal to be transmitted from the processor 410, frequency modulate it, amplify it, and convert it to electromagnetic waves for radiation via the antenna 2.

In some embodiments, the terminal device's antenna 1 and mobile communication module 450 are coupled, and the antenna 2 and wireless communication module 460 are coupled, so that the terminal device can communicate with the network and other devices through wireless communication technology.

In some embodiments, the functionality of memory 303 in fig. 3 may be implemented by an external memory (e.g., micro SD card) connected by internal memory 421 or external memory interface 420 in fig. 4, or the like.

In some embodiments, the functionality of the output device 305 of FIG. 3 may be implemented by the display screen 494 of FIG. 4. The display screen 494 includes a display panel.

In some embodiments, the functionality of the input device 306 in FIG. 3 may be implemented by a mouse, a keyboard, a touch screen device, or the sensor module 480 in FIG. 4. In some embodiments, as shown in fig. 4, the terminal device may further include one or more of an audio module 470, a camera 493, an indicator 492, a motor 491, a key 490, a SIM card interface 495, a USB interface 430, a charge management module 440, a power management module 441, and a battery 442, which is not particularly limited by the embodiments of the present application.

It will be appreciated that the structure shown in fig. 4 does not constitute a specific limitation on the terminal device. For example, in other embodiments of the application, the terminal device may include more or less components than illustrated, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Or in combination with the schematic structural diagram of the communication apparatus 300 shown in fig. 3, taking the communication apparatus 300 as the first network device in fig. 2, the first network device is exemplified by a base station, and fig. 5 is an exemplary structural form of the base station 50 according to an embodiment of the present application.

Wherein the base station 50 includes one or more radio frequency units (e.g., RRU 501), and one or more BBU502.

The RRU501 may be referred to as a transceiver unit, transceiver circuitry, or transceiver, etc., which may include at least one antenna feed system (i.e., antenna) 511 and a radio frequency unit 512. The RRU501 is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals and baseband signals. In some embodiments, the functionality of the communication interface 304 in fig. 3 may be implemented by the RRU501 in fig. 5.

The BBU502 is a control center of the first network device, and may also be referred to as a processing unit, and is mainly configured to perform baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and so on.

In some embodiments, the BBU502 may be formed by one or more boards, where the multiple boards may support a single access indicated radio access network (e.g., an LTE network) together, or may support radio access networks of different access schemes (e.g., an LTE network, a 5G network, or other networks) respectively. The BBU502 also includes a memory 521 and a processor 522, the memory 521 for storing necessary instructions and data. The processor 522 is configured to control the first network device to perform the necessary actions. The memory 521 and processor 522 may serve one or more boards. That is, the memory and the processor may be separately provided on each board. It is also possible that multiple boards share the same memory and processor. In addition, each single board can be provided with necessary circuits. Wherein in some embodiments, the functions of processor 301 in fig. 3 may be implemented by processor 522 in fig. 5, and the functions of memory 303 in fig. 3 may be implemented by memory 521 in fig. 5.

Alternatively, the RRU501 and the BBU502 in fig. 5 may be physically disposed together or may be physically disposed separately, for example, a distributed base station, which is not specifically limited in the embodiment of the present application.

The uplink power control method provided by the embodiment of the present application will be described in detail with reference to fig. 6.

It should be understood that the names of signals between devices or the names of parameters in signals in the following embodiments of the present application are merely examples, and other names may be used in specific implementations, which are not limited in particular by the embodiments of the present application.

Taking interaction between the first network device and the terminal device shown in fig. 2 as an example, as shown in fig. 6, an uplink power control method provided by an embodiment of the present application includes the following steps:

S601, the first network equipment generates first indication information. The first indication information is used for indicating a path loss compensation proportionality coefficient corresponding to each path loss reference signal in a plurality of path loss reference signals associated with the uplink signal. The path loss compensation scaling factor is used for the terminal device to determine the path loss compensation value. The path loss compensation value is used for determining a target transmitting power of the terminal equipment for transmitting the uplink signal.

S602, the first network equipment sends the first indication information to the terminal equipment. Accordingly, the terminal device receives the first indication information from the first network device.

S603, the terminal equipment determines a path loss compensation value according to the first indication information.

S604, the terminal equipment determines the target sending power for sending the uplink signal according to the path loss compensation value.

The steps S601 to S604 are described in detail below.

For step S601:

Alternatively, the first network device may be any one of a plurality of network devices that cooperate for transmission. The plurality of network devices cooperatively transmitted may be a plurality of network devices in a cqt scenario. Interactions may occur between multiple network devices that cooperate in the transmission. That is, the first network device may acquire an interference condition in a cell corresponding to each of the plurality of network devices, where the interference condition in a cell may refer to, for example: the number of other signals within the cell that occupy the same time-frequency resource as the uplink signal. Furthermore, the first network device may comprehensively consider the cell interference situation and the SNR requirement of each network device for receiving the uplink signal, so as to determine a path loss compensation scaling factor capable of balancing the uplink signal receiving power corresponding to each network device and the overall interference level of the cell, thereby generating the first indication information.

For example, in the case that no other signal occupies the same time-frequency resource as the uplink signal in the cell, the path loss compensation scaling factor corresponding to the path loss reference signal associated with the network device (or called the weak station) with larger path loss between the terminal devices may be increased, and/or the path loss compensation scaling factor corresponding to the other path loss reference signal may be reduced, so as to improve the SNR of the weak station receiving the uplink signal.

It can be understood that, in the case that other signals occupying the same time-frequency resource as the uplink signal exist in the cell, the first network device may moderately promote, according to the number of the other signals, the path loss compensation scaling factor corresponding to the path loss reference signal associated with the weak station. For example, the path loss compensation scaling factor corresponding to the path loss reference signal associated with the weak station is 0.5, and the sum of the path loss compensation scaling factors corresponding to the other path loss reference signals is 0.5.

It will be appreciated that in a cqt scenario, each of a plurality of network devices cooperatively transmitting may transmit a path loss reference signal to a terminal device. Accordingly, the terminal device may receive a plurality of path loss reference signals. Wherein, a plurality of path loss reference signals can be associated with the uplink signal. That is, a plurality of path loss reference signals associated with the uplink signal can be determined according to the uplink signal. It may be appreciated that the terminal device may determine, according to an index or a resource ID of an uplink signal, a plurality of path loss reference signals associated with the uplink signal.

Optionally, the plurality of path loss reference signals associated with the uplink signal include one or more path loss reference signals transmitted by each of a plurality of network devices cooperatively transmitting. That is, each network device may send one or more path loss reference signals to the terminal device for path loss measurement.

Optionally, each network device of the plurality of network devices cooperatively transmitting sends a path loss reference signal to the terminal device, which may be used to instruct the terminal device to determine a path loss compensation value according to the first indication information, and determine the target transmission power of the uplink signal according to the path loss compensation value. That is, in the case that the terminal device receives a plurality of path loss reference signals, the target transmission power at which the terminal device transmits the uplink signal is determined according to the first indication information. Thus, the terminal device can determine the opportunity of using the corresponding power control scheme in the CJT scene.

Optionally, the path loss compensation scaling factor is a preset value, or a constant, or configured by a high-level parameter, which is not particularly limited in the embodiment of the present application.

Optionally, the uplink signal may include: an uplink reference signal, PUSCH, or a physical uplink control channel (physical uplink control channel, PUCCH), etc., which are not limited by the embodiment of the present application.

Alternatively, the path loss reference signal may be a downlink reference signal or an uplink reference signal for acquiring downlink channel information, which is not specifically limited in the embodiment of the present application.

It should be understood that the "reference signal" section of the preamble of the embodiment has described the uplink reference signal and the downlink reference signal in detail, and will not be described herein.

It should be understood that, in the case where the path loss reference signal is a downlink reference signal, the terminal device may determine the path loss measurement value corresponding to the path loss reference signal through the above formula (2). In the case that the path loss reference signal is an uplink reference signal for acquiring downlink channel information, the path loss measurement value corresponding to the path loss reference signal may be a difference between a receiving power of the network device for receiving the path loss reference signal and a transmitting power of the terminal device for transmitting the path loss reference signal.

Alternatively, the path loss compensation scaling factor may be used to indicate a reduced scale of the path loss measurement corresponding to one of the path loss reference signals. The path loss compensation proportionality coefficient corresponding to each path loss reference signal in the plurality of path loss reference signals is smaller than 1, and the sum of the path loss compensation proportionality coefficients corresponding to each path loss reference signal in the plurality of path loss reference signals is smaller than 1 or equal to 1.

It should be appreciated that the product of the path loss measurement value corresponding to one path loss reference signal and the path loss compensation scaling factor corresponding to the path loss reference signal may represent the path loss compensation value corresponding to the path loss reference signal.

For example, taking an example that the plurality of path loss reference signals include a path loss reference signal #1, a path loss reference signal #2, and a path loss reference signal #3, a path loss compensation scaling factor #1 corresponding to the path loss reference signal #1 is 0.1, a path loss compensation scaling factor #2 corresponding to the path loss reference signal #2 is 0.2, a path loss compensation scaling factor #3 corresponding to the path loss reference signal #3 is 0.4, the path loss compensation scaling factors #1 to #3 are all smaller than 1, and the sum of the path loss compensation scaling factors #1 to #3 is 0.7.

Further, the terminal device may determine, according to the formula (2), a measured value #1 (in dB) of the path loss corresponding to the path loss reference signal #1, a measured value #2 (in dB) of the path loss corresponding to the path loss reference signal #2, a measured value #3 (in dB) of the path loss corresponding to the path loss reference signal #3, and combine the above-mentioned path loss compensation scaling coefficients #1 to #3 to obtain: when the terminal device determines the path loss compensation value, the path loss compensation value corresponding to the path loss reference signal #1 is reduced to 0.1 as the path loss measurement value #1, the path loss compensation value corresponding to the path loss reference signal #2 is reduced to 0.2 as the path loss measurement value #2, and the path loss compensation value corresponding to the path loss reference signal #3 is reduced to 0.4 as the path loss measurement value # 3.

Or alternatively, the path loss compensation scaling factor may be used to indicate a duty cycle of the path loss compensation corresponding to one of the plurality of path loss reference signals. The path loss compensation proportionality coefficient corresponding to each path loss reference signal in the plurality of path loss reference signals is smaller than 1, and the sum of the path loss compensation proportionality coefficients corresponding to each path loss reference signal in the plurality of path loss reference signals is equal to 1.

For example, the plurality of path loss reference signals include a path loss reference signal #4, a path loss reference signal #5, and a path loss reference signal #6, the path loss compensation scaling factor #4 corresponding to the path loss reference signal #4 is 0.3, the path loss compensation scaling factor #5 corresponding to the path loss reference signal #5 is 0.2, the path loss compensation scaling factor #6 corresponding to the path loss reference signal #6 is 0.5, the path loss compensation scaling factors #4 to #6 are all smaller than 1, and the sum of the path loss compensation scaling factors #4 to #6 is 1.

Optionally, the path loss compensation scaling factor may be used by the terminal device to determine the path loss compensation value: and the path loss compensation proportionality coefficient corresponding to part or all of the plurality of path loss reference signals is used for determining the path loss compensation value by the terminal equipment.

In one possible implementation, a path loss compensation scaling factor corresponding to each of a plurality of path loss reference signals is used by a terminal device to determine a path loss compensation value. That is, the terminal device may determine the path loss compensation value according to the path loss scaling factor corresponding to each of the plurality of path loss reference signals.

In another possible implementation manner, a path loss compensation scaling factor corresponding to a target path loss reference signal in the plurality of path loss reference signals is used for determining a path loss compensation value by the terminal device. The target path loss reference signal comprises one path loss reference signal in a plurality of path loss reference signals. Or the target path loss reference signal comprises k path loss reference signals in the plurality of path loss reference signals. And k is more than 1 and less than n, n is the number of the path loss reference signals in the plurality of path loss reference signals, and n and k are integers more than 1. That is, the terminal device may determine the path loss compensation value according to the path loss compensation scaling factor corresponding to one or more of the plurality of path loss reference signals.

It can be appreciated that, in connection with the description of the relation of the SRS transmission power in the "uplink power control scheme" in the preamble of the specific embodiment, the SRS transmission power is determined according to the actual path loss compensation value α _SRS,b,f,c(q_s)·PL_b,f,c(q_d) corresponding to the path loss compensation value PL _b,f,c(q_d). Therefore, the first indication information may be described as a case one and a case two according to whether the path loss compensation scaling factor is an actual path loss compensation scaling factor.

Case one:

in case one, the path loss compensation scaling factor is not the actual path loss compensation scaling factor, and the actual path loss compensation value is determined based on the path loss compensation value and the total path loss compensation factor.

In one possible implementation, the total path loss compensation factor is a configured total path loss compensation factor. The configured total path loss compensation factor may include a total path loss compensation factor configured in the terminal device for a non-cqt scene, for example, a total path loss compensation factor α _SRS,b,f,c(q_s corresponding to SRS), a total path loss compensation factor corresponding to PUSCH, or a total path loss compensation factor corresponding to PUCCH, which is not specifically limited in the embodiment of the present application.

In another possible implementation, the total path loss compensation factor may be a re-indicated total path loss compensation factor. Wherein the total path loss compensation factor may be associated with the upstream signal.

Optionally, the first indication information is further used for indicating a total path loss compensation factor corresponding to the path loss compensation value. The total path loss compensation factor is used for determining an actual path loss compensation value corresponding to the path loss compensation value. The actual path loss compensation value is used to determine the target transmit power. The actual path loss compensation value may be, for example, the product of the path loss compensation value and the total compensation factor.

That is, in the cqt scenario, the actual road loss compensation value may be determined in a manner indicated by two levels of road loss factors (including the total road loss compensation factor and the road loss compensation scaling factor). The total path loss compensation factor can multiplex the quantization mode of the existing path loss compensation factor.

Optionally, the first indication information includes one or more of:

The identification information of each of the plurality of path loss reference signals may be used to determine an index corresponding to each of the plurality of path loss reference signals. The index of the path loss reference signal is described in the preamble of the detailed description, "uplink power control scheme", and will not be repeated here.

The path loss compensation scaling factor in the first path loss compensation factor is similar to the total path loss compensation factor, and can be configured in a quantized value mode. For example, as described in the preamble of the detailed description "uplink power control scheme", the path loss compensation scaling factor in the first path loss compensation factor may be characterized by ENUMERATED.

Optionally, the sum of the path loss compensation scaling coefficients corresponding to each of the plurality of path loss reference signals is less than or equal to 1. That is, the condition can limit the excessive or insufficient path loss compensation value, so that the target transmitting power determined by the terminal equipment can consider the SNR receiving requirement of the weak station and balance the interference condition of the whole cell.

Optionally, the path loss compensation scaling factor comprises a first path loss compensation scaling factor. The first path loss compensation scaling factor corresponding to the ith path loss reference signal is used for multiplying the first path loss measurement value corresponding to the ith path loss reference signal. The first path loss measurement value is a linear value. i epsilon {1, …, n }, n being the number of the path loss reference signals in the plurality of path loss reference signals, n being an integer greater than 1.

Alternatively, the second path loss measurement may be a dB value or a dBm value.

Optionally, the first indication information includes a first path loss compensation factor, where the first path loss compensation factor includes a path loss compensation scaling factor corresponding to each of the plurality of path loss reference signals, and the path loss compensation value is determined according to the first path loss compensation factor. The actual path loss compensation value corresponding to the path loss compensation value is alpha-PL _b,f,c(Q_d1,Q_d2,…,Q_dn), alpha is the total path loss compensation factor corresponding to the path loss compensation value, PL _b,f,c(Q_d1,Q_d2,…,Q_dn) is the path loss compensation value, b is the identification of the active bandwidth part BWP corresponding to the uplink signal, c is the identification of the cell corresponding to the uplink signal, f is the carrier frequency of the cell corresponding to the uplink signal, Q _di in Q _d1,Q_d2,…,Q_dn is the index of the ith path loss reference signal, i epsilon {1,2, …, n }, n is the number of the path loss reference signals in the plurality of path loss reference signals, and n is an integer greater than 1.

Alternatively, the total path loss compensation factor α may be quantized in the "uplink power control scheme" in the preamble of the embodiment. That is, α ε {0,0.4,0.5,0.6,0.7,0.8,0.9,1}.

The following describes a path loss compensation value PL _b,f,c(Q_d1,Q_d2,…,Q_dn in the implementation of the present application, taking the first path loss measurement value as a linear value and the first path loss compensation scaling factor as a path loss compensation scaling factor corresponding to the linear value as an example.

Optionally, the path loss compensation scaling factor is a first path loss compensation scaling factor, and the first path loss compensation scaling factor corresponding to the ith path loss reference signal isThe first path loss measurement value corresponding to the ith path loss reference signal isWherein PL _b,f,c(Q_d1,Q_d2,…,Q_dn), The relationship between them can be expressed by the formula (3). Equation (3) is as follows:

Wherein, That is, due toThe path loss compensation value PL _b,f,c(Q_d1,Q_d2,…,Q_dn) may be limited to be too large or too small, so that the target transmit power determined by the terminal device may not only consider the SNR receiving requirement of the weak station, but also balance the interference situation of the whole cell. It should be appreciated thatThe path loss compensation scaling factor may be less than 1, i.e., may be used to indicate a reduction in the path loss measurement corresponding to a path loss reference signal.And may be equal to 1, i.e., the path loss compensation scaling factor may be used to indicate the duty cycle of the path loss compensation corresponding to one of the plurality of path loss reference signals.

Optionally, atIn the case of PL _b,f,c(Q_d1,Q_d2,…,Q_2n), The relationship between them can also be expressed by the formula (4). Equation (4) is as follows:

Wherein, That is, due toThe path loss compensation value PL _b,f,c(Q_d1,Q_d2,…,Q_dn) may be limited to be too large or too small, so that the target transmit power determined by the terminal device may not only consider the SNR receiving requirement of the weak station, but also balance the interference situation of the whole cell.

In a possible implementation manner, a first path loss measurement value corresponding to an ith path loss reference signalMay be a linear value determined from the path loss measurement pathloss= referenceSignalPoweri _i-higher layer filtered RSRP_i.

In another possible implementation manner, the first path loss measurement value corresponding to the ith path loss reference signalMay be a linear value determined from the path loss measurement pathloss= HIGHER LAYER FILTERED RSRP _i-referenceSignalPower_i. WhereinOrThat is, the first path loss measurement value calculated by pathloss= HIGHER LAYER FILTERED RSRP _i-referenceSignalPower_i and PL _b,f,c(Q_d1,Q_d2,…,Q_dn obtained by the first path loss measurement value) may reduce the path loss compensation value, thereby reducing the target transmission power of the uplink reference signal, and further reducing interference between multiple network devices in cooperative transmission.

The following describes a path loss compensation value PL _b,f,c(Q_d1,Q_d2,…,Q_dn in the implementation of the present application, taking the second path loss measurement value as the logarithmic value and the second path loss compensation scaling factor as the path loss compensation scaling factor corresponding to the logarithmic value as an example.

Optionally, the path loss compensation scaling factor is a second path loss compensation scaling factor, the second path loss compensation scaling factor corresponding to the ith path loss reference signal is α _i, and the second path loss measurement value corresponding to the ith path loss reference signal is PL _i. The relationship between PL _b,f,c(Q_d1,Q_d2,…,Q_dn)、α_i and PL _i can be expressed by formula (5) or formula (6).

PL_b,f,c(Q_d1,Q_d2,…,Q_dn)＝α₁·PL₁+α₂·PL₂+…+α_n·PL_n Formula (5)

Wherein alpha ₁+α₂+…+α_n is less than or equal to 1.

PL_b,f,c(Q_d1,Q_d2,…,Q_dn)＝α₁·PL₁+α₂·PL₂+…+(1A)·PL_n Formula (6)

Wherein A=α ₁+α₂+…+α_n-1, A is less than or equal to 1.

In one possible implementation, the second path loss measurement value PL _i corresponding to the i-th path loss reference signal may be a logarithmic value determined according to the path loss measurement value pathloss= referenceSignalPower ₊-higher layer filtered RSRPi_i.

In another possible implementation, the second path loss measurement value PL _i corresponding to the i-th path loss reference signal may be a logarithmic value determined according to the path loss measurement value pathloss= HIGHER LAYER FILTERED RSRP _i-referenceSignalPower_i.

The first path loss compensation scaling factorTo illustrate the quantization configuration of the path loss compensation scaling factor.

Optionally, the quantized value of the path loss compensation scaling factor is determined based on a number of the plurality of path loss reference signals. The quantized values of the path loss compensation scaling coefficients are as follows:

(1) When the number of the configured plurality of path loss measurement reference signals is 2:

Alternatively, the process may be carried out in a single-stage, Comprises one or more of 0,0.25,0.5,0.75,1 values.

Alternatively, for equation (5),OrOr Or

Alternatively, the aboveThe possible values of 0.25 and 0.75 included may also be replaced with 0.2 and 0.8, respectively, or 0.3 and 0.7, respectively.

(2) When the number of the configured plurality of path loss measurement reference signals is 3:

Alternatively, the process may be carried out in a single-stage, Comprises one or more of 0,0.25,0.33,0.5,1 values.

Alternatively, for equation (5),OrOr Or

Alternatively, for equation (6),OrOr

Alternatively, the aboveThe 0.33 included in the possible values may be any decimal fraction of 1/3.

(4) When the number of the configured plurality of path loss measurement reference signals is 4:

Alternatively, the process may be carried out in a single-stage, Comprises one or more of 0,0.17,0.2,0.25,0.3,0.33,1 values;

Alternatively, for equation (5) and equation (6), Or OrOrOr

Or alternatively, the quantized value of the path loss compensation scaling factor may be independent of the number of configured plurality of path loss reference signals. The quantized values of the path loss compensation scaling coefficients are as follows: comprises one or more of 0,0,17,0.2,0.25,0.3,0.33,0.5,0.75,1 values;

Alternatively, the process may be carried out in a single-stage,

Or alternativelyOr

It should be understood that the above is merely illustrative, and the number of the plurality of path loss reference signals may be preferably 5, 6, or more, and the quantized value of the path loss compensation scaling factor may be any other value between [0,1], which is not particularly limited in the embodiment of the present application.

It should be appreciated that the quantized value of the second path loss compensation scaling factor α _i may be referred to as the first path loss compensation scaling factorIs not described in detail herein.

For example, the transmission power of the terminal device transmitting the SRS may be determined by equation (7). Equation (7) is as follows:

And a second case:

In the second case, the path loss compensation scaling factor may be an actual path loss compensation scaling factor, and the actual path loss compensation value may be a path loss compensation value.

Optionally, the path loss compensation value is an actual path loss compensation value corresponding to the path loss compensation value. The path loss compensation proportion coefficient is an actual path loss compensation proportion coefficient. That is, in the cqt scenario, the actual path loss compensation value may be determined using the first-order path loss factor (i.e., the path loss compensation scaling factor), and the total path loss compensation factor is not required to be indicated, so that the indication overhead may be saved.

Optionally, the path loss compensation value is an actual path loss compensation value corresponding to the path loss compensation value, the path loss compensation scaling factor is an actual path loss compensation scaling factor, and the first indication information includes a second path loss compensation scaling factor. The second path loss compensation scaling factor comprises an actual path loss compensation scaling factor corresponding to each path loss reference signal in the plurality of path loss reference signals.

Optionally, the path loss compensation scaling factor in the second path loss compensation factor is similar to the first path loss compensation factor, and may be configured in a quantized value manner. For example, as described in the preamble of the detailed description "uplink power control scheme", the path loss compensation scaling factor in the second path loss compensation factor may be characterized by the parameter ENUMERATED.

Optionally, when the path loss compensation value is an actual path loss compensation value corresponding to the path loss compensation value and the path loss compensation proportionality coefficient is an actual path loss compensation proportionality coefficient, the first indication information further includes identification information of each of the plurality of path loss reference signals. It can be appreciated that the identification information of each of the plurality of path loss reference signals is described in detail in the first case, and will not be described herein.

Optionally, the actual path loss compensation scaling factor comprises a first actual path loss compensation scaling factor. The first actual path loss compensation scaling factor corresponding to the ith path loss reference signal is used for multiplying the first path loss measurement value corresponding to the ith path loss reference signal. The first path loss measurement value is a linear value. i epsilon {1, …, n }, n being the number of the path loss reference signals in the plurality of path loss reference signals, n being an integer greater than 1.

It should be appreciated that the first path loss measurement value and the second path loss measurement value are already described in detail above, and are not described here again.

It is understood that the conversion between linear and logarithmic values. Illustratively, the first path loss measurement may be a linear value and the second path loss measurement may be a logarithmic value.

Optionally, the path loss compensation value is an actual path loss compensation value corresponding to the path loss compensation value, the path loss compensation proportionality coefficient is an actual path loss compensation proportionality coefficient, the first indication information includes a second path loss compensation factor, the second path loss compensation factor includes an actual path loss compensation proportionality coefficient corresponding to each path loss reference signal in the plurality of path loss reference signals, and the path loss compensation value is determined according to the second path loss compensation factor. Wherein the path loss compensation value is PL _b,f,c(Q_d1,Q_d2,…,Q_dn), b is an identifier of an activated BWP corresponding to the uplink signal, c is an identifier of a cell corresponding to the uplink signal, f is a carrier frequency of the cell corresponding to the uplink signal, Q _di in Q _d1,Q_d2,…,Q_dn is an index of an ith path loss reference signal, i e {1,2, …, n }, n is the number of path loss reference signals in the plurality of path loss reference signals, and n is an integer greater than 1.

That is, the case is different from the case one in that: and in the second case, the actual road loss compensation factor is not required to be calculated through the total road loss compensation factor, and the road loss compensation proportion coefficient is the actual road loss compensation proportion coefficient. That is, the path loss compensation scaling factor may be used to indicate an actual reduction ratio of the path loss measurement value corresponding to one path loss reference signal; or the path loss compensation scaling factor may be used to indicate the actual duty cycle of the path loss compensation corresponding to one of the path loss reference signals.

The following describes the path loss compensation value PL _b,f,c(Q_d1,Q_d2,…,Q_dn in the implementation of the present application, taking the first path loss measurement value as a linear value and the first actual path loss compensation scaling factor as an actual path loss compensation scaling factor corresponding to the linear value as an example.

Optionally, the actual road loss compensation scaling factor is a first actual road loss compensation scaling factor, and the first actual road loss compensation scaling factor corresponding to the ith road loss reference signal isThe first path loss measured value corresponding to the ith path loss reference signal isWherein PL _b,f,c(Q_d1,Q_d2,…,Q_dn), The relationship between them can be expressed by the formula (8).

In the formula (8), the expression "a",

Or alternatively, the number of the cells may be, The relationship between them can be expressed by the formula (9). Equation (9) is as follows:

The formula (9) may be used to indicate that the path loss compensation value determined by the terminal device is the maximum value of the path loss compensation values corresponding to the plurality of path loss reference signals.

The first actual path loss is used for compensating the proportional coefficientThe quantized value of (2) illustrates the quantization configuration mode of the path loss compensation scaling factor.

Optionally, the first actual path loss compensation scaling factorThe quantized values of (2) may be uniform quantized values in the [0,1] range. Wherein the quantization step size is 0.1 or 0.05.

Optionally, the first actual path loss compensation scaling factorMay be determined based on the number of the plurality of path loss reference signals. Wherein, exemplary, the first actual road loss compensates for the scaling factorThe following are provided:

α_i∈{0,0.1,0.15,0.2,0.25,0.3,0.35,0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.75,0.8,0.85,0.9,0.95,1}；

Or α _i ε {0.1,0.15,0.2,0.25,0.3,0.35,0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.75,0.8,0.85,0.9,0.95};

Or alternatively

Or α _i ε {0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1};

Wherein, 0 and 1 can be discarded in the above quantized value set.

α_i∈{0,0.1,0.15,0.2,0.25,0.3,0.35,0.4,0.45,0.5,1}；

Or α _i ε {0.1,0.15,0.2,0.25,0.3,0.35,0.4,0.45,0.5};

Or alternatively

Wherein, 0 and 1 can be discarded in the above quantized value set.

(3) When the number of the configured plurality of path loss measurement reference signals is 4:

α_i∈{0,0.05,0.1,0.12,0.15,0.18,0.2,0.22,0.25,0.3,0.4,0.5,1}；

Or alternatively

Wherein, 0 and 1 can be discarded in the above quantized value set.

Or alternatively, the first actual path loss compensation scaling factorThe following are provided:

When the number of the configured plurality of path loss measurement reference signals is 2, α _i e {0,0.25,0.5,0.75,1}, or α _i e {0,0.4,0.5,0.6,0.7,0.8,0.9,1};

When the number of the configured plurality of path loss measurement reference signals is 3, alpha _i epsilon {0,0.25,0.33,0.5,1}, or alpha _i epsilon {0,0.4,0.5,0.6,0.7,0.8,0.9,1};

When the number of the configured plurality of path loss measurement reference signals is 4, α _i ε {0,0.2,0.25,0.4,1}, or α _i ε {0,0.4,0.5,0.6,0.7,0.8,0.9,1}.

Or alternatively, the value of α _i is independent of the number of configured path loss measurement reference signals, and the value of α _i includes one or more of 0,0.1,0.15,0.2,0.25,0.3,0.35,0.4,0.45,0.5,0.6,0.7,0.8,0.9,1.

Alternatively, α _i ε {0,0.1,0.15,0.2,0.25,0.3,0.35,0.4,0.45,0.5,0.6,0.7,0.8,0.9,1} one or more of which 0 and 1 can be discarded.

It should be appreciated that the quantized value of the second actual road loss compensation scaling factor α _i may be referred to as the first actual road loss compensation scaling factorIs not described in detail herein.

The following describes the path loss compensation value PL _b,f,c(Q_d1,Q_d2,…,Q_dn in the implementation of the present application, taking the second path loss measurement value as a logarithmic value and the second actual path loss compensation scaling factor as an actual path loss compensation scaling factor corresponding to the logarithmic value as an example.

Optionally, the actual route loss compensation scaling factor is a second actual route loss compensation scaling factor, the second actual route loss compensation scaling factor corresponding to the ith route loss reference signal is α _i, and the second route loss measurement value corresponding to the ith route loss reference signal is PL _i. The relationship between PL _b,f,c(Q_d1,Q_d2,…,Q_dn)、α_i and PL _i can be expressed by the formula (10). Equation (10) is as follows:

PL_b,f,c(Q_d1,Q_d2,…,Q_dn)＝α₁·PL₁+α₂·PL₂+…+α_n·PL_n Formula (10)

It should be understood that the second actual road loss compensation scaling factor is α _i and the first actual road loss compensation scaling factorSimilarly, reference may be made to the first actual path loss compensation scaling factorIs not described in detail herein.

Or alternatively, the relationship between PL _b,f,c(Q_d1,Q_d2,…,Q_dn)、α_i, and PL _i may be expressed by formula (11). Equation (11) is as follows:

PL_b,f,c(Q_d1,Q_d2,…,Q_dn)＝max(α₁·PL₁,α₂·PL₂,…,α_n·PL_n) Formula (11)

Alternatively, in equation (11), the quantized value of the second actual path loss compensation scaling factor α _i may be a uniform quantized value in the [0,1] range. Wherein the quantization step size is 0.1 or 0.05.

Illustratively, the transmission power at which the terminal device transmits the SRS may be determined by equation (12). Equation (12) is as follows:

It should be understood that, the determination manner of the path loss compensation values corresponding to the first case and the second case may be protocol convention; or the determining mode of the path loss compensation value corresponding to the first case and the second case can be predefined or preconfigured by the terminal equipment; or the determining manner of the path loss compensation value corresponding to the first case and the second case may be that the terminal device and the first network device negotiate in advance, which is not limited in particular in the embodiment of the present application.

For step S602:

Alternatively, the first indication information may be carried by RRC signaling, MAC layer signaling, or DCI, which is not specifically limited in the embodiment of the present application.

For step S603:

it can be understood that the above case one and case two respectively introduce the corresponding schemes for determining the path loss compensation value by the terminal device according to the first indication information, which are not described herein again. Several other schemes are described below.

It should be understood that the terminal device may determine the path loss compensation value according to the first indication information. The terminal device can adopt a high path loss compensation value, a low path loss compensation value or an intermediate path loss compensation value according to the self energy consumption and/or the perception of the environment. The corresponding scheme of the terminal equipment for automatically determining the path loss compensation value is described below according to whether the terminal equipment uses the path loss compensation proportionality coefficient corresponding to each path loss reference signal or not.

And a third case:

in the third case, the terminal device determines the path loss compensation value according to the path loss compensation proportionality coefficient corresponding to each path loss reference signal in the plurality of path loss reference signals.

Optionally, the terminal device determines a target calculation mode of the path loss compensation value; and the terminal equipment determines the path loss compensation value according to the first indication information and the target calculation mode. The target calculation mode of the path loss compensation value is as follows: and calculating the maximum value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals, or calculating the minimum value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals, or calculating the average value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals.

For example, when the energy consumption of the terminal device is low and the wireless channel environment is poor, the terminal device can determine the policy of adopting the high path loss compensation value by itself, that is, the target calculation mode of the path loss compensation value is: and calculating the maximum value in the path loss compensation value corresponding to each path loss reference signal in the plurality of path loss reference signals. The maximum value of the path loss compensation value corresponding to each of the plurality of path loss reference signals can be determined by the formula (9) or the formula (11) in the second case.

It will be appreciated that in equation (9)It may also be the first loss compensated scaling factor in case one. Alpha _i in equation (11) may also be the second path loss compensation scaling factor in case one.

For another example, when the energy consumption of the terminal device is high and the wireless channel environment is good, the terminal device can determine the strategy of adopting the low path loss compensation value by itself, that is, the target calculation mode of the path loss compensation value is: and calculating the minimum value in the path loss compensation value corresponding to each path loss reference signal in the plurality of path loss reference signals. The minimum value in the path loss compensation value corresponding to each path loss reference signal in the plurality of path loss reference signals can be determined by the formula (13) or the formula (14).

In the case of the formula (13),May be the first loss compensated scaling factor in case one; orThe first actual path loss compensation scaling factor in case two may be.

PL_b,f,c(Q_d1,Q_d2,…,Q_dn)＝min(α₁·PL₁,α₂·PL₂,…,α_n·PL_n) Formula (14)

In equation (14), α _i may be the second path loss compensation scaling factor for case one; or α _i may be the second actual path loss compensation scaling factor in case two.

For another example, when the energy consumption of the terminal device itself and the wireless channel environment where the terminal device is located are good, the terminal device may also determine a policy of adopting an intermediate path loss compensation value by itself, that is, the target calculation mode of the path loss compensation value is: and calculating an average value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals. The average value of the path loss compensation values corresponding to each of the plurality of path loss reference signals may be determined by equation (15) or equation (16).

In the case of the formula (15),May be the first loss compensated scaling factor in case one; orThe first actual path loss compensation scaling factor in case two may be.

PL_b,f,c(Q_d1,Q_d2,…,Q_dn)＝average(α₁·PL₁,α₂·PL₂,…,α_n·PL_n) Formula (16)

In equation (16), α _i may be the second path loss compensation scaling factor in case one; or α _i may be the second actual path loss compensation scaling factor in case two.

Case four:

In the fourth case, the terminal device determines the path loss compensation value according to the path loss compensation proportionality coefficient corresponding to the target path loss reference signal in the plurality of path loss reference signals.

Optionally, the determining, by the terminal device, the path loss compensation value according to the first indication information includes: the terminal equipment determines a target path loss reference signal; the terminal equipment determines a path loss compensation proportionality coefficient corresponding to the target path loss reference signal according to the first indication information; and the terminal equipment determines a path loss compensation value according to the path loss compensation proportional coefficient corresponding to the target path loss reference signal. The target path loss reference signal comprises one path loss reference signal in a plurality of path loss reference signals. That is, the terminal device may determine the path loss compensation value according to the path loss compensation scaling factor corresponding to the target path loss reference signal.

Illustratively, taking case one as an example, assume that the terminal device selects the i-th path loss reference signal as the target reference signal. Wherein, the first path loss compensation proportion coefficient corresponding to the ith path loss reference signal is as followsThe first path loss measurement value corresponding to the ith path loss reference signal isThe path loss compensation value determined by the terminal equipment according to the first indication information is as followsOr the second path loss compensation proportionality coefficient corresponding to the ith path loss reference signal is alpha _i, the second path loss measured value corresponding to the ith path loss reference signal is PL _i, and the path loss compensation value determined by the terminal equipment according to the first indication information is alpha _i·PL_i.

It will be appreciated that case two is similar to case one, except thatThe first actual path loss compensation scaling factor corresponding to the ith path loss reference signal is denoted, and α _i is denoted as the second actual path loss compensation scaling factor corresponding to the ith path loss reference signal, which is not described herein.

Optionally, the target path loss reference signal includes k path loss reference signals of the plurality of path loss reference signals. Wherein, k is more than 1 and less than n, n is the number of the path loss reference signals in the plurality of path loss reference signals, and n and k are integers more than 1. The terminal device may determine the path loss compensation value according to a target calculation mode of the path loss compensation value corresponding to the target path loss reference signal.

The target route reference signal includes the 1 st route reference signal and the 2 nd route reference signal, and the target calculation mode of the route compensation value is as follows: calculating the maximum value in the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals, wherein the path loss compensation proportionality coefficient is a second path loss compensation proportionality coefficient, and the path loss compensation value determined by the terminal equipment according to the first indication information is max (alpha ₁·PL₁,α₂·PL₂ 0. Wherein alpha ₁ is the second path loss compensation proportionality coefficient corresponding to the 1 st path loss reference signal, PL ₁ is the second path loss measurement value corresponding to the 1 st path loss reference signal, alpha ₂ is the second path loss compensation proportionality coefficient corresponding to the 2 nd path loss reference signal, and PL ₂ is the second path loss measurement value corresponding to the 2 nd path loss reference signal.

Optionally, the first indication information is further used for indicating: and in the case that the path loss compensation value determined by the terminal equipment is greater than or equal to a first threshold value, determining the target transmission power according to the first threshold value. It can be understood that in the schemes of determining the path loss compensation value according to the path loss compensation scaling factor in the first to fourth cases, there may be cases where the determined path loss compensation value is too large. That is, by the limiting condition, the target transmission power can be prevented from being too large, so that the target transmission power determined by the terminal device not only meets the SNR receiving requirement of the weak station, but also can balance the interference condition of the whole cell.

Optionally, the first threshold may be indicated by the first network device; or the first threshold may be determined by the terminal device. Wherein, for example, the first threshold may beOr the first threshold may be max (PL ₁,PL₂,…,PL_n). /(I)May be a first path loss measurement and PL _i may be a second path loss measurement.

For step S604:

optionally, the terminal device determines the target transmission power of the uplink signal similar to equation (1). The following description will be made based on the corresponding schemes for determining the path loss compensation value corresponding to the first to fourth cases.

Case one:

Alternatively, the target transmission power determined by the terminal device to transmit the uplink signal may be determined by equation (17). Equation (17) is as follows:

Wherein each parameter in formula (17) is defined as follows:

p represents the target transmission power of the uplink signal.

P _CMAX indicates the maximum transmission power configured by the terminal device on the time-frequency resource for transmitting the uplink signal, and the description of the "uplink power control scheme" in the preamble of the specific embodiment may be referred to herein, which is not repeated herein.

P _O represents a nominal power or a power reference value, which is a target received power value expected by the network device, and may be specifically referred to for a description of the "uplink power control scheme" in the preamble of the embodiment, which is not described herein.

Μ denotes a subcarrier spacing configuration.

M represents the number of RBs occupied by the uplink signal resource when the uplink signal is transmitted, and the description of the uplink power control scheme in the preamble of the specific embodiment can be referred to specifically, and will not be repeated here.

Alpha represents the total path loss compensation factor.

PL _b,f,c(Q_d1,Q_d2,…,Q_dn) indicates the path loss compensation value corresponding to the uplink signal, PL _b,f,c(Q_d1,Q_d2,…,Q_dn) may refer to the related description of the above case one, and will not be described herein.

H represents a closed-loop control parameter corresponding to the uplink signal, and specific reference may be made to the description related to the "uplink power control scheme" in the preamble of the specific embodiment, which is not repeated herein.

And a second case:

alternatively, the target transmission power determined by the terminal device to transmit the uplink signal may be determined by equation (18). Equation (18) is as follows:

The PL _b,f,c(Q_d1,Q_d2,…,Q_dn in the formula (16) may be referred to in the description of the second case, and the other parameters in the formula (18) may be referred to in the description of the formula (18), which will not be described herein.

It will be appreciated that the target transmit power in the third case and the fourth case may be determined by the formula (17) and the formula (18), and may specifically be referred to in the above description about the formula (17) and the formula (18), which are not repeated herein.

Optionally, after step S602, the method provided by the embodiment of the present application further includes:

S605, the terminal equipment sends second indication information to the first network equipment. Accordingly, the first network device receives the second indication information from the terminal device. The second indication information is used for indicating a target route loss reference signal or a target calculation mode of the route loss compensation value used by the terminal equipment for determining the route loss compensation value. That is, the second indication information may inform the first network device that the terminal device determines the target reference signal selected by the path loss compensation value or the target calculation mode of the path loss compensation value. If the first network device determines that the target sending power of the uplink signal sent by the terminal device does not meet the receiving requirement, the first network device can adjust the path loss compensation proportionality coefficients corresponding to the path loss reference signals according to the second indication information and the receiving parameter of the uplink signal, so that the target sending power of the uplink signal meets the receiving requirement of the channel information acquired by the plurality of terminal devices in cooperative transmission.

Optionally, the second indication information may be carried by a power headroom report (power headroom report, PHR); or the second indication information may be carried by uplink control information (uplink control information, UCI), which is not particularly limited in the embodiment of the present application.

S606, the first network device sends third indication information to the terminal device. Accordingly, the terminal device receives the third indication information from the first network device. The third indication information is used for indicating the updated multiple path loss reference signals and the path loss compensation proportionality coefficient corresponding to each path loss reference signal in the updated multiple path loss reference signals;

Optionally, the third indication information may be carried by RRC signaling, MAC layer signaling, or DCI, which is not specifically limited in the embodiment of the present application.

The actions of the terminal device in steps S601 to S606 may be performed by the processor 301 in the communication apparatus 300 shown in fig. 3 by calling the application program code stored in the memory 303 to instruct the communication apparatus 300, and the actions of the first network device in steps S601 to S606 may be performed by the processor 301 in the communication apparatus 300 shown in fig. 3 by calling the application program code stored in the memory 303 to instruct the communication apparatus 300, which is not limited in the embodiment of the present application.

The scheme provided by the embodiment of the application is mainly introduced from the interaction angle among the network elements. Correspondingly, the embodiment of the application also provides a communication device which is used for realizing the various methods. The communication device may be the first network device in the above method embodiment, or a device including the first network device, or a component that may be used in the first network device; or the communication device may be a terminal device in the above method embodiment, or a device including the terminal device, or a component applicable to the terminal device, where it is understood that, in order to implement the above functions, the communication device includes a corresponding hardware structure and/or a software module for performing each function. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application can divide the functional modules of the communication device according to the above method embodiment, for example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be understood that the division of the modules in the embodiment of the present application is illustrative, and is merely a logic function division, and other division manners may be implemented in practice.

For example, taking a communication apparatus as an example of the first network device in the above method embodiment, fig. 7 shows a schematic structural diagram of the first network device 700. The first network device 700 comprises a transceiver module 701 and a processing module 702. The transceiver module 701 may also be referred to as a transceiver unit for implementing a transceiver function, and may be, for example, a transceiver circuit, a transceiver, or a communication interface.

The processing module 702 is configured to generate first indication information, where the first indication information is used to indicate a path loss compensation scaling factor corresponding to each of a plurality of path loss reference signals associated with an uplink signal, where the path loss compensation scaling factor is used to determine a path loss compensation value by a terminal device, and the path loss compensation value is used to determine a target transmission power of the terminal device for transmitting the uplink signal; a transceiver module 701, configured to send the first indication information to a terminal device.

In some embodiments, a path loss compensation scaling factor corresponding to each of the plurality of path loss reference signals is used by the terminal device to determine a path loss compensation value.

In some embodiments, a path loss compensation scaling factor corresponding to a target path loss reference signal of the plurality of path loss reference signals is used by the terminal device to determine a path loss compensation value. The target path loss reference signal comprises one path loss reference signal in a plurality of path loss reference signals. Or the target path loss reference signal comprises k path loss reference signals in the plurality of path loss reference signals. And k is more than 1 and less than n, n is the number of the path loss reference signals in the plurality of path loss reference signals, and n and k are integers more than 1.

In some embodiments, the first indication information is further used to indicate a total path loss compensation factor corresponding to the path loss compensation value. The total path loss compensation factor is used for determining an actual path loss compensation value corresponding to the path loss compensation value. The actual path loss compensation value is used to determine a target transmit power.

In some embodiments, the first indication information includes one or more of:

In some embodiments, a sum of path loss compensation scaling coefficients corresponding to each of the plurality of path loss reference signals is less than or equal to 1.

In some embodiments, the path loss compensation scaling factor comprises a first path loss compensation scaling factor. The first path loss compensation scaling factor corresponding to the ith path loss reference signal is used for multiplying the first path loss measurement value corresponding to the ith path loss reference signal. The first path loss measurement value is a linear value. i epsilon {1, …, n }, n being the number of the path loss reference signals in the plurality of path loss reference signals, n being an integer greater than 1.

In some embodiments, the first indication information includes a first loss compensation factor, the first loss compensation factor including a loss compensation scaling factor corresponding to each of the plurality of loss reference signals, the loss compensation value being determined based on the first loss compensation factor. The actual path loss compensation value corresponding to the path loss compensation value is alpha-PL _b,f,c(Q_d1,Q_d2,…,Q_dn), alpha is the total path loss compensation factor corresponding to the path loss compensation value, PL _b,f,c(Q_d1,Q_d2,…,Q_dn) is the path loss compensation value, b is the identification of the active bandwidth part BWP corresponding to the uplink signal, c is the identification of the cell corresponding to the uplink signal, f is the carrier frequency of the cell corresponding to the uplink signal, Q _di in Q _d1,Q_d2,…,Q_dn is the index of the ith path loss reference signal, i epsilon {1,2, …, n }, n is the number of the path loss reference signals in the plurality of path loss reference signals, and n is an integer greater than 1.

In some embodiments, the path loss compensation scaling factor is a first path loss compensation scaling factor, and the first path loss compensation scaling factor corresponding to the i-th path loss reference signal isThe first path loss measurement value corresponding to the ith path loss reference signal isWherein PL _b,f,c(Q_d1,Q_d2,…,Q_dn), The following relationship is satisfied:

Wherein,

Or alternativelyWherein

In some embodiments, the path loss compensation scaling factor is a second path loss compensation scaling factor, the second path loss compensation scaling factor corresponding to the i-th path loss reference signal is α _i, and the second path loss measurement corresponding to the i-th path loss reference signal is PL _i. Among them, PL _b,f,c(Q_d1,Q_d2,…,Q_dn)、α_i and PL _i satisfy the following relationship:

In some embodiments, the path loss compensation value is an actual path loss compensation value corresponding to the path loss compensation value. The path loss compensation proportion coefficient is an actual path loss compensation proportion coefficient.

In some embodiments, the path loss compensation value is an actual path loss compensation value corresponding to the path loss compensation value, the path loss compensation scaling factor is an actual path loss compensation scaling factor, and the first indication information includes a second path loss compensation scaling factor. The second path loss compensation scaling factor comprises an actual path loss compensation scaling factor corresponding to each path loss reference signal in the plurality of path loss reference signals.

In some embodiments, when the path loss compensation value is an actual path loss compensation value corresponding to the path loss compensation value and the path loss compensation scaling factor is an actual path loss compensation scaling factor, the first indication information further includes identification information of each of the plurality of path loss reference signals.

In some embodiments, the actual path loss compensation scaling factor comprises a first actual path loss compensation scaling factor. The first actual path loss compensation scaling factor corresponding to the ith path loss reference signal is used for multiplying the first path loss measurement value corresponding to the ith path loss reference signal. The first path loss measurement value is a linear value. i epsilon {1, …, n }, n being the number of the path loss reference signals in the plurality of path loss reference signals, n being an integer greater than 1.

In some embodiments, the path loss compensation value is an actual path loss compensation value corresponding to the path loss compensation value, the path loss compensation scaling factor is an actual path loss compensation scaling factor, the first indication information includes a second path loss compensation factor, the second path loss compensation factor includes an actual path loss compensation scaling factor corresponding to each of the plurality of path loss reference signals, and the path loss compensation value is determined according to the second path loss compensation factor. Wherein the path loss compensation value is PL _b,f,c(Q_d1,Q_d2,…,Q_dn), b is an identifier of an activated BWP corresponding to the uplink signal, c is an identifier of a cell corresponding to the uplink signal, f is a carrier frequency of the cell corresponding to the uplink signal, Q _di in Q _d1,Q_d2,…,Q_dn is an index of an ith path loss reference signal, i e {1,2, …, n }, n is the number of path loss reference signals in the plurality of path loss reference signals, and n is an integer greater than 1.

In some embodiments, the actual road loss compensation scaling factor is a first actual road loss compensation scaling factor, and the first actual road loss compensation scaling factor corresponding to the ith road loss reference signal isThe first path loss measurement value corresponding to the ith path loss reference signal isWherein PL _b,f,c(Q_d1,Q_d2,…,Q_dn), The following relationship is satisfied:

Or alternatively

In some embodiments, the actual path loss compensation scaling factor is a second actual path loss compensation scaling factor, the second actual path loss compensation scaling factor corresponding to the i-th path loss reference signal is α _i, and the second path loss measurement corresponding to the i-th path loss reference signal is PL _i. Among them, PL _b,f,c(Q_d1,Q_d2,…,Q_dn)、α_i and PL _i satisfy the following relationship:

PL_b,f,c(Q_d1,Q_d2,…,Q_dn)＝α₁·PL₁+α₂·PL₂+…+α_n·PL_n;

In some embodiments, the first indication information is further for indicating: and in the case that the path loss compensation value determined by the terminal equipment is greater than or equal to a first threshold value, determining the target transmission power according to the first threshold value.

In some embodiments, the transceiver module 701 is further configured to receive second indication information from the terminal device. The second indication information is used for indicating a target route loss reference signal or a target calculation mode of the route loss compensation value used by the terminal equipment for determining the route loss compensation value. The target path loss reference signal comprises one of a plurality of path loss reference signals.

In some embodiments, the target calculation method of the path loss compensation value is as follows: and calculating the maximum value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals, or calculating the minimum value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals, or calculating the average value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals.

In some embodiments, the transceiver module 701 is further configured to send third indication information to the terminal device. The third indication information is used for indicating the updated multiple path loss reference signals and the path loss compensation proportionality coefficient corresponding to each path loss reference signal in the updated multiple path loss reference signals;

All relevant contents of each step related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein.

In an embodiment of the present application, the first network device 700 is presented in the form of dividing the respective functional modules in an integrated manner. A "module" herein may refer to a particular ASIC, an electronic circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that can provide the described functionality. In a simple embodiment, one skilled in the art will appreciate that the first network device 700 may take the form of the communication apparatus 300 shown in fig. 3.

For example, the processor 301 in the communication device 300 shown in fig. 3 may invoke computer-executable instructions stored in the memory 303, so that the communication device 300 performs the uplink power control method in the above-described method embodiment.

Specifically, the functions/implementation of the transceiver module 701 and the processing module 702 in fig. 7 may be implemented by the processor 301 in the communication device 300 shown in fig. 3 invoking computer executable instructions stored in the memory 303. Or the function/implementation of the processing module 702 in fig. 7 may be implemented by the processor 301 in the communication device 300 shown in fig. 3 invoking computer executable instructions stored in the memory 303, and the function/implementation of the transceiver module 701 in fig. 7 may be implemented by the communication interface 304 in the communication device 300 shown in fig. 3.

Since the first network device 700 provided in the embodiment of the present application may execute the uplink power control method, the technical effects that can be obtained by the first network device may refer to the method embodiment described above, and will not be described herein.

Or, for example, a communication device is taken as an example of the terminal device in the above method embodiment, and fig. 8 shows a schematic structural diagram of a terminal device 800. The terminal device 800 comprises a transceiver module 801 and a processing module 802. The transceiver module 801, which may also be referred to as a transceiver unit, is configured to perform a transceiver function, and may be, for example, a transceiver circuit, a transceiver, or a communication interface.

The transceiver module 801 is configured to receive first indication information from a first network device, where the first indication information is used to indicate a path loss compensation scaling factor corresponding to each of a plurality of path loss reference signals associated with an uplink signal; a processing module 802, configured to determine a path loss compensation value according to the first indication information; the processing module 802 is further configured to determine a target transmission power for transmitting the uplink signal according to the path loss compensation value.

In some embodiments, the first indication information includes one or more of:

Wherein,

Or alternativelyWherein

Or PL_b,f,c(Q_d1,Q_d2,…,Q_dn)＝α₁·PL₂+α₂·PL₂+…+(1A)·PL_n, where a=α ₁+α₂+…+α_n-1, a+.1.

In some embodiments, the actual road loss compensation scaling factor is a first actual road loss compensation scaling factor, and the first actual road loss compensation scaling factor corresponding to the ith road loss reference signal isThe first path loss measurement value corresponding to the ith path loss reference signal isWherein PL _b,f,c(Q_d1,Q_d2,…,Q_2n), The following relationship is satisfied:

Or alternatively

PL_b,f,c(Q_d1,Q_d2,…,Q_dn)＝α₁·PL₁+α₂·PL₂+…+α_n·PL_n;

In some embodiments, the processing module 802 determines a path loss reference value according to the first indication information, specifically including: determining a target calculation mode of a target path loss reference signal or a path loss compensation value; determining a path loss compensation proportion coefficient corresponding to the target path loss reference signal according to the first indication information, and determining a path loss compensation value according to the path loss compensation proportion coefficient corresponding to the target path loss reference signal; or determining the path loss compensation value according to the first indication information and the target calculation mode. The target path loss reference signal comprises one path loss reference signal in a plurality of path loss reference signals. The target calculation mode of the path loss compensation value is as follows: and calculating the maximum value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals, or calculating the minimum value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals, or calculating the average value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals.

In some embodiments, the transceiver module 801 is further configured to send the second indication information to the first network device. The second indication information is used for indicating a target route loss reference signal or a target calculation mode of the route loss compensation value used by the terminal equipment for determining the route loss compensation value. The target path loss reference signal comprises one of a plurality of path loss reference signals.

In some embodiments, the transceiver module 801 is further configured to receive third indication information from the first network device. The third indication information is used for indicating the updated multiple path loss reference signals and the path loss compensation proportionality coefficient corresponding to each path loss reference signal in the updated multiple path loss reference signals;

In the embodiment of the present application, the terminal device 800 is presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to a particular ASIC, an electronic circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that can provide the described functionality. In a simple embodiment, one skilled in the art will appreciate that the terminal device 800 may take the form of the communication apparatus 300 shown in fig. 3.

Specifically, the functions/implementation of the transceiver module 801 and the processing module 802 in fig. 8 may be implemented by the processor 301 in the communication device 300 shown in fig. 3 invoking computer-executable instructions stored in the memory 303. Or the function/implementation of the processing module 802 in fig. 8 may be implemented by the processor 301 in the communication device 300 shown in fig. 3 invoking computer executable instructions stored in the memory 303, and the function/implementation of the transceiver module 801 in fig. 8 may be implemented by the communication interface 304 in the communication device 300 shown in fig. 3.

Since the terminal device 800 provided in this embodiment may execute the uplink power control method, the technical effects that can be obtained by the terminal device may refer to the method embodiment described above, and will not be described herein.

It should be understood that one or more of the above modules or units may be implemented in software, hardware, or a combination of both. When any of the above modules or units are implemented in software, the software exists in the form of computer program instructions and is stored in a memory, and a processor can be used to execute the program instructions and implement the above method flows. The processor may be built in a SoC (system on a chip) or ASIC, or may be a separate semiconductor chip. The processor may further include necessary hardware accelerators, such as field programmable gate arrays (field programmable GATE ARRAY, FPGAs), PLDs (programmable logic devices), or logic circuits implementing dedicated logic operations, in addition to the cores for executing software instructions for operation or processing.

When the above modules or units are implemented in hardware, the hardware may be any one or any combination of a CPU, microprocessor, digital Signal Processing (DSP) chip, micro control unit (microcontroller unit, MCU), artificial intelligence processor, ASIC, soC, FPGA, PLD, special purpose digital circuitry, hardware accelerator, or non-integrated discrete devices that may run the necessary software or that do not rely on software to perform the above method flows.

Optionally, an embodiment of the present application further provides a communication device (for example, the communication device may be a chip or a chip system), where the communication device includes a processor, and the method is used to implement the method in any of the foregoing method embodiments. In one possible design, the communication device further includes a memory. The memory for storing the necessary program instructions and data, and the processor may invoke the program code stored in the memory to instruct the communication device to perform the method of any of the method embodiments described above. Of course, the memory may not be in the communication device. When the communication device is a chip system, the communication device may be formed by a chip, or may include a chip and other discrete devices, which is not particularly limited in the embodiment of the present application.

Optionally, an embodiment of the present application further provides a computer readable storage medium having stored therein a computer program or instructions which, when run on a communication device, enable the communication device to perform the method according to any one of the method embodiments or any implementation thereof.

Optionally, the embodiment of the present application further provides a communication system, where the communication system includes the first network device described in the foregoing method embodiment and the terminal device described in the foregoing method embodiment.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, a website, computer, server, or data center via a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. Computer readable storage media can be any available media that can be accessed by a computer or data storage devices including one or more servers, data centers, etc. that can be integrated with the media. Usable media may be magnetic media (e.g., floppy disks, hard disks, magnetic tape), optical media (e.g., DVD), or semiconductor media (e.g., solid State Disk (SSD)) or the like.

Although the application is described herein in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the application has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the present application as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents that fall within the scope of the application. It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. An uplink power control method is characterized by comprising the following steps:

generating first indication information, wherein the first indication information is used for indicating a path loss compensation proportionality coefficient corresponding to each path loss reference signal in a plurality of path loss reference signals associated with an uplink signal, the path loss compensation proportionality coefficient is used for determining a path loss compensation value by a terminal device, and the path loss compensation value is used for determining a target transmission power of the terminal device for transmitting the uplink signal;

And sending the first indication information to the terminal equipment.

2. The method of claim 1, wherein the first indication information is further used for indicating a total path loss compensation factor corresponding to the path loss compensation value, the total path loss compensation factor being used for determining an actual path loss compensation value corresponding to the path loss compensation value, the actual path loss compensation value being used for determining the target transmit power.

3. The method of claim 1 or 2, wherein the first indication information comprises one or more of:

The total path loss compensation factor corresponding to the path loss compensation value is used for determining an actual path loss compensation value corresponding to the path loss compensation value, and the actual path loss compensation value is used for determining the target transmitting power;

Or the first path loss compensation factor comprises a path loss compensation proportionality coefficient corresponding to each path loss reference signal in the plurality of path loss reference signals.

4. A method according to any of claims 1-3, wherein a sum of the path loss compensation scaling coefficients for each of the plurality of path loss reference signals is less than or equal to 1.

5. The method according to any one of claims 1-4, wherein the path loss compensation scaling factor comprises a first path loss compensation scaling factor, the first path loss compensation scaling factor corresponding to an i-th path loss reference signal being used for multiplication with a first path loss measurement value corresponding to the i-th path loss reference signal, the first path loss measurement value being a linear value;

Or the path loss compensation proportion coefficient comprises a second path loss compensation proportion coefficient, wherein the second path loss compensation proportion coefficient corresponding to the ith path loss reference signal is used for multiplying a second path loss measured value corresponding to the ith path loss reference signal, and the second path loss measured value is a logarithmic value;

wherein i epsilon {1, …, n }, n being the number of the path loss reference signals in the plurality of path loss reference signals, n being an integer greater than 1.

6. The method of any one of claims 1-5, wherein the first indication information is further used to indicate: and under the condition that the path loss compensation value determined by the terminal equipment is greater than or equal to a first threshold value, the target transmitting power is determined according to the first threshold value.

7. The method according to any one of claims 1-6, further comprising:

And receiving second indication information from the terminal equipment, wherein the second indication information is used for indicating a target path loss reference signal used by the terminal equipment for determining the path loss compensation value or a target calculation mode of the path loss compensation value, and the target path loss reference signal comprises one path loss reference signal in the plurality of path loss reference signals.

8. An uplink power control method is characterized by comprising the following steps:

receiving first indication information from first network equipment, wherein the first indication information is used for indicating a path loss compensation proportion coefficient corresponding to each path loss reference signal in a plurality of path loss reference signals associated with an uplink signal;

determining a path loss compensation value according to the first indication information;

and determining the target transmitting power for transmitting the uplink signal according to the path loss compensation value.

9. The method of claim 8, wherein the first indication information is further used for indicating a total path loss compensation factor corresponding to the path loss compensation value, the total path loss compensation factor being used for determining an actual path loss compensation value corresponding to the path loss compensation value, the actual path loss compensation value being used for determining the target transmit power.

10. The method of claim 8 or 9, wherein the first indication information comprises one or more of:

11. The method of any of claims 8-10, wherein a sum of path loss compensation scaling coefficients for each of the plurality of path loss reference signals is less than or equal to 1.

12. The method according to any one of claims 8-11, wherein the path loss compensation scaling factor comprises a first path loss compensation scaling factor, the first path loss compensation scaling factor corresponding to an i-th path loss reference signal being used for multiplication with a first path loss measurement value corresponding to the i-th path loss reference signal, the first path loss measurement value being a linear value;

13. The method according to any one of claims 8-12, wherein the first indication information is further used to indicate: and under the condition that the determined path loss compensation value is greater than or equal to a first threshold value, the target transmitting power is determined according to the first threshold value.

14. The method according to any one of claims 8-13, further comprising:

And sending second indication information to the first network device, wherein the second indication information is used for indicating a target route loss reference signal used for determining the route loss compensation value or a target calculation mode of the route loss compensation value, and the target route loss reference signal comprises one route loss reference signal in the plurality of route loss reference signals.

15. The method of any of claims 8-14, wherein the first indication information includes a first loss compensation factor, the first loss compensation factor including a loss compensation scaling factor corresponding to each of the plurality of loss reference signals, the loss compensation value being determined based on the first loss compensation factor;

The actual path loss compensation value corresponding to the path loss compensation value is alpha-PL _b,f,c(Q_d1,Q_d2,…,Q_dn), alpha is the total path loss compensation factor corresponding to the path loss compensation value, PL _b,f,c(Q_d1,Q_d2,…,Q_dn) is the path loss compensation value, b is the identification of the active bandwidth part BWP corresponding to the uplink signal, c is the identification of the cell corresponding to the uplink signal, f is the carrier frequency of the cell corresponding to the uplink signal, Q _di in Q _d1,Q_d2,…,Q_dn is the index of the ith path loss reference signal, i epsilon {1,2, …, n } is the number of path loss reference signals in the plurality of path loss reference signals, and n is an integer greater than 1.

16. The method of claim 15 wherein the path loss compensation scaling factor is a first path loss compensation scaling factor, and the first path loss compensation scaling factor corresponding to the ith path loss reference signal isThe first path loss measurement value corresponding to the ith path loss reference signal isPL_b,f,c(Q_d1,Q_d2,…,Q_dn)、 The following relationship is satisfied:

Wherein,

Or alternativelyWherein

17. The method of claim 15, wherein the path loss compensation scaling factor is a second path loss compensation scaling factor, the second path loss compensation scaling factor corresponding to the i-th path loss reference signal is α _i, the second path loss measurement value corresponding to the i-th path loss reference signal is PL _i,PL_b,f,c(Q_d1,Q_d2,…,Q_dn)、α_i, and PL _i satisfy the following relationship:

PL_b,f,c(Q_d1,Q_d2,…,Q_dn)＝α₁·PL₁+α₂·PL₂+…+α_n·PL_n, Wherein alpha ₁+α₂+…+α_n is less than or equal to 1;

or PL_b,f,c(Q_d1,Q_d2,…,Q_dn)＝α₁·PL₁+α₂·PL₂+…+(1-A)·PL_n, where a=α ₁+α₂+…+α_n-1, a+.1.

18. The method according to any one of claims 8-15, wherein determining the path loss compensation value from the first indication information comprises:

Determining a target path loss reference signal or a target calculation mode of the path loss compensation value, wherein the target path loss reference signal comprises one path loss reference signal in the plurality of path loss reference signals, and the target calculation mode of the path loss compensation value is as follows: calculating the maximum value of the path loss compensation value corresponding to each path loss reference signal in the plurality of path loss reference signals, or calculating the minimum value of the path loss compensation value corresponding to each path loss reference signal in the plurality of path loss reference signals, or calculating the average value of the path loss compensation values corresponding to each path loss reference signal in the plurality of path loss reference signals;

Determining a path loss compensation proportion coefficient corresponding to the target path loss reference signal according to the first indication information, and determining the path loss compensation value according to the path loss compensation proportion coefficient corresponding to the target path loss reference signal;

Or determining the path loss compensation value according to the first indication information and the target calculation mode.

19. A communication device, characterized in that the communication device is configured to perform the uplink power control method according to any one of claims 1-7.

20. A communication device for performing the uplink power control method according to any one of claims 8-18.

21. A communication device, comprising:

A processor coupled to the memory; the processor configured to execute a computer program stored in the memory, to cause the communication apparatus to perform the uplink power control method according to any one of claims 1 to 7, or to cause the communication apparatus to perform the uplink power control method according to any one of claims 8 to 18.

22. A communication device, comprising:

A processor and interface circuit; the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor;

The processor is configured to execute the code instructions to cause the communication device to perform the uplink power control method according to any one of claims 1 to 7 or to cause the communication device to perform the uplink power control method according to any one of claims 8 to 18.

23. A communication device comprising a processor and a transceiver for information interaction between the communication device and other communication devices, the processor executing program instructions to cause the communication device to perform an uplink power control method according to any one of claims 1-7 or to cause the communication device to perform an uplink power control method according to any one of claims 8-18.

24. A computer readable storage medium, characterized in that the computer readable storage medium comprises a computer program or instructions, which when run on a computer, cause the computer to perform the uplink power control method according to any one of claims 1-7 or cause the computer to perform the uplink power control method according to any one of claims 8-18.

25. A chip system, comprising: at least one processor and an interface through which the at least one processor is coupled with a memory, which when executed by the at least one processor causes the method of any of claims 1-7 to be performed; or cause the method of any one of claims 8-18 to be performed.