CN116261171A

CN116261171A - Method, device, equipment and storage medium for indicating uplink power

Info

Publication number: CN116261171A
Application number: CN202111511014.6A
Authority: CN
Inventors: 王瀚庆; 王潇涵; 金黄平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2023-06-13
Also published as: WO2023103829A1

Abstract

The application provides an uplink power indication method, device, equipment and storage medium. The method comprises the following steps: the terminal equipment receives indication information of a first reference point from the network equipment, wherein the first reference point is used for dividing M sub-bands into n first sub-bands and M-n second sub-bands, M is more than n and more than 0, M and n are integers, the indication information of the first reference point is used for indicating the numerical value of the first reference point, the numerical value of the first reference point is used for indicating n, the terminal equipment determines power values according to the numerical value of the first reference point and M downlink reference signals, and the M downlink reference signals are respectively received by the terminal equipment on the M sub-bands. High precision indication of the power value is achieved.

Description

Method, device, equipment and storage medium for indicating uplink power

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to an uplink power indication method, device, equipment, and storage medium.

Background

Currently, in some communication systems, such as the fifth generation mobile communication system (5th generation wireless system,5G), the network device may indicate a power adjustment amount of uplink transmission, for example, one of { -1,0,1,3} dbm, to the terminal device through a 2bit field in downlink control information (downlink control information, DCI), so that the terminal device determines a power value of uplink transmission based on the power adjustment amount.

However, the network device can only indicate four power adjustment amounts based on the indication manner, so that a certain gap exists between the power adjustment amount indicated by the network device and the adjustment step length corresponding to the optimal uplink transmission power, and the accuracy of power indication is affected. In the new data services such as augmented reality, real-time monitoring and high-definition video, very high requirements are put forward on the uplink transmission capacity of the mobile communication system, so that in order to meet the high requirements on the uplink transmission capacity, the uplink throughput is improved, the mobile communication system is required to support more uplink transmission stream numbers, and multi-station cooperation is introduced. In this case, the interference environment of the uplink transmission is inevitably more complex, and performing high-precision uplink power control helps to suppress the near-far effect and multi-user interference. Therefore, how to perform high-precision indication on the uplink transmission power of the terminal device is a current problem to be solved.

Disclosure of Invention

The method, the device, the equipment and the storage medium for indicating the uplink power are provided for realizing accurate indication of the uplink transmission power.

In a first aspect, an embodiment of the present application provides a method for indicating uplink power, where the method includes: the terminal equipment receives indication information of a first reference point from the network equipment, wherein the first reference point is used for dividing M sub-bands into n first sub-bands and M-n second sub-bands, M is more than n and more than 0, M and n are integers, the indication information of the first reference point is used for indicating the numerical value of the first reference point, and the numerical value of the first reference point is used for indicating n; and the terminal equipment determines a power value according to the value of the first reference point and M downlink reference signals, wherein the M downlink reference signals are respectively received by the terminal equipment on the M sub-bands.

By the method for indicating uplink power provided in the first aspect, the network device indicates the power value of the terminal device through the indication information of the first reference point and the M downlink reference signals respectively transmitted in the M sub-bands, compared with the method in the prior art that four discrete power adjustment amounts can be indicated only through 2 bits of DCI, the method achieves high-precision indication of the power value.

In a possible implementation manner, the determining, by the terminal device, a power value according to the value of the first reference point and the M downlink reference signals includes: the terminal equipment determines first equivalent channel power and second equivalent channel power according to the value of the first reference point and the M downlink reference signals, wherein the first equivalent channel power is the sum of equivalent channel powers of downlink reference signals carried on n first sub-frequency bands, and the second equivalent channel power is the sum of equivalent channel powers of downlink reference signals carried on M sub-frequency bands; the terminal device determines the power value according to the ratio of the first equivalent channel power to the second equivalent channel power.

According to the uplink power indicating method provided by the embodiment, the first equivalent channel power and the second equivalent channel power are determined according to the value of the first reference point, and then the power value indicated by the network equipment can be determined according to the ratio of the first equivalent channel power and the second equivalent channel power.

In one possible implementation, the power value is a power value of the uplink transmission.

By the uplink power indicating method provided by the embodiment, the terminal device can determine the power value for uplink transmission based on the indication information of the first reference point of the network device and the M downlink reference signals.

In one possible implementation, the power value is a power adjustment amount for uplink transmission.

By the uplink power indicating method provided by the embodiment, the terminal device can determine the power adjustment amount for uplink transmission based on the indication information of the first reference point of the network device and the M downlink reference signals, so that the terminal device can determine the power value of uplink transmission through the power adjustment amount.

In one possible embodiment, the method further comprises: the terminal device receives first indication information from the network device, where the first indication information is used to indicate that the power value is an uplink power value or an uplink power adjustment amount.

According to the uplink power indication method provided by the embodiment, the flexible configuration of the network equipment to the terminal equipment is realized based on the first indication information.

In one possible embodiment, the method further comprises: the terminal device receives M downlink reference signals from the network device on the M subbands, respectively.

By the method for indicating the uplink power, the terminal equipment can determine the equivalent channel power of the downlink reference signals transmitted on different sub-bands, and the possibility is provided for determining the power value indicated by the network equipment.

In a second aspect, an embodiment of the present application provides a method for indicating uplink power, where the method includes: the network equipment determines a first reference point, wherein the first reference point is used for dividing M frequency sub-bands into n first frequency sub-bands and M-n second frequency sub-bands, M is more than n and more than 0, and M and n are integers; the network device sends indication information of the first reference point to the terminal device, the indication information of the first reference point is used for indicating the value of the first reference point, the value of the first reference point is used for indicating n, and the M downlink reference signals are respectively sent by the network device on the M sub-bands.

In one possible implementation, the network device determines a first reference point, including: the network device converts the power value into a first value y, wherein y is greater than 0 and less than 1; the network device determines the first reference point according to the first value y.

In one possible embodiment, the method further comprises: the network equipment determines first uplink precoding information of each sub-band in the M sub-bands according to the first reference point; the network equipment performs downlink precoding on the M downlink reference signals according to the downlink channel information and the first uplink precoding information of each sub-band in the M sub-bands; the network device transmits the M downlink reference signals on the M subbands, respectively.

In one possible implementation, when the sub-band is the first sub-band, the first uplink precoding information of the sub-band is determined based on the equivalent channel powers of the n first sub-bands and the second uplink precoding information of the sub-band; when the sub-band is the second sub-band, the first uplink precoding information of the sub-band is determined based on the equivalent channel power of the M-n second sub-bands and the second uplink precoding information of the sub-bands; the second uplink precoding information is obtained based on uplink reference signal detection.

In one possible implementation manner, the downlink channel information of the subband is a matrix formed by the downlink channel information corresponding to p terminal devices respectively, the first uplink precoding information of the subband is a matrix formed by the first uplink precoding information corresponding to the p terminal devices respectively, and p is a positive integer.

In one possible embodiment, the method further comprises: the network device sends first indication information to the terminal device, where the first indication information is used to indicate that the power value is an uplink power value or an uplink power adjustment amount.

The advantages of the second aspect and the method for indicating uplink power provided by each possible implementation manner of the second aspect may be referred to the advantages of the first aspect and each possible implementation manner of the first aspect, which are not described herein.

In a third aspect, an embodiment of the present application provides a communication apparatus, including: the receiving and transmitting unit is used for receiving indication information of a first reference point from the network equipment, wherein the first reference point is used for dividing M sub-bands into n first sub-bands and M-n second sub-bands, M is more than n and more than 0, M and n are integers, the indication information of the first reference point is used for indicating the numerical value of the first reference point, and the numerical value of the first reference point is used for indicating n; and the processing unit is used for determining a power value according to the value of the first reference point and M downlink reference signals, wherein the M downlink reference signals are respectively received by the terminal equipment on the M sub-bands.

In a possible embodiment, the processing unit is specifically configured to: determining a first equivalent channel power and a second equivalent channel power according to the value of the first reference point and the M downlink reference signals, wherein the first equivalent channel power is the sum of equivalent channel powers of the downlink reference signals carried on n first sub-frequency bands, and the second equivalent channel power is the sum of equivalent channel powers of the downlink reference signals carried on M sub-frequency bands; the power value is determined based on a ratio of the first equivalent channel power to the second equivalent channel power.

In a possible embodiment, the transceiver unit is further configured to: and receiving first indication information from the network equipment, wherein the first indication information is used for indicating that the power value is the power value of uplink transmission or the power adjustment quantity of uplink transmission.

In a possible embodiment, the transceiver unit is further configured to: m downlink reference signals from the network device are received on the M sub-bands, respectively.

The advantages of the communication device provided by the third aspect and the possible embodiments of the third aspect may be referred to the advantages of the first aspect and the possible embodiments of the first aspect, and are not described herein.

In a fourth aspect, embodiments of the present application provide a communication device, including: the processing unit is used for determining a first reference point, wherein the first reference point is used for dividing M frequency sub-bands into n first frequency sub-bands and M-n second frequency sub-bands, M is more than n and more than 0, and M and n are integers; the receiving and transmitting unit is configured to send, to the terminal device, indication information of the first reference point, where the indication information of the first reference point is used to indicate a value of the first reference point, the value of the first reference point is used to indicate n, and the M downlink reference signals are sent by the network device on the M subbands respectively.

In a possible embodiment, the processing unit is specifically configured to: converting the power value into a first value y, wherein y is greater than 0 and less than 1; the first reference point is determined based on the first value y.

In a possible embodiment, the processing unit is further configured to: determining first uplink precoding information of each sub-band of the M sub-bands according to the first reference point; according to the downlink channel information and the first uplink precoding information of each sub-band in the M sub-bands, carrying out downlink precoding on the M downlink reference signals; and respectively transmitting the M downlink reference signals on the M sub-bands.

In a possible embodiment, the transceiver unit is further configured to: and sending first indication information to the terminal equipment, wherein the first indication information is used for indicating that the power value is the power value of uplink transmission or the power adjustment quantity of uplink transmission.

The advantages of the communication device provided by the fourth aspect and the possible embodiments of the fourth aspect may be referred to the advantages of the first aspect and the possible embodiments of the first aspect, and are not described herein.

In a fifth aspect, embodiments of the present application provide a communication device, including: a processor and a memory for storing a computer program for invoking and running the computer program stored in the memory for performing the method as in the first aspect, the second aspect or in each of the possible implementations.

In a sixth aspect, embodiments of the present application provide a chip, including: a processor for invoking and executing computer instructions from memory to cause a device on which the chip is mounted to perform a method as in the first aspect, the second aspect or in each of the possible implementations.

In a seventh aspect, embodiments of the present application provide a computer-readable storage medium storing computer program instructions that cause a computer to perform a method as in the first aspect, the second aspect, or in each of the possible implementations.

In an eighth aspect, embodiments of the present application provide a computer program product comprising computer program instructions for causing a computer to perform the method as in the first aspect, the second aspect or in each of the possible implementations.

In a ninth aspect, embodiments of the present application provide an apparatus comprising logic circuitry and an input-output interface, wherein the input-output interface is to receive signals from or transmit signals to or from other communication devices than the apparatus, the logic circuitry to execute code instructions to implement a method as in the first aspect, the second aspect or in each of the possible implementations.

In a tenth aspect, embodiments of the present application provide a terminal, including an apparatus as in the third aspect, the fourth aspect, or in each possible implementation manner.

Drawings

Fig. 1 is a schematic architecture diagram of a mobile communication system to which embodiments of the present application are applied;

fig. 2 is an interaction schematic diagram of information transmission provided in an embodiment of the present application;

FIG. 3 is a schematic flow chart of a communication method 300 provided by an embodiment of the present application;

FIG. 4 is a schematic view of a reference point provided in an embodiment of the present application;

FIG. 5a is a schematic diagram of a transformation function provided by an embodiment of the present application;

FIG. 5b is a schematic diagram of another transformation function provided by an embodiment of the present application;

FIG. 6 is a schematic block diagram of a communication device provided by an embodiment of the present application;

Fig. 7 is another schematic block diagram of a communication device provided by an embodiment of the present application.

Detailed Description

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

Fig. 1 is a schematic architecture diagram of a mobile communication system to which an embodiment of the present application is applied. As shown in fig. 1, the mobile communication system includes a core network device 110, a network device 120, and at least one terminal device (e.g., terminal device 130 and terminal device 140 in fig. 1). The terminal equipment is connected with the network equipment in a wireless mode, and the network equipment is connected with the core network equipment in a wireless or wired mode. The core network device and the network device may be separate physical devices, or may integrate the functions of the core network device and the logic functions of the network device on the same physical device, or may integrate the functions of a part of the core network device and the functions of a part of the network device on one physical device. The terminal device may be fixed in position or may be movable. Fig. 1 is only a schematic diagram, and other network devices may be further included in the communication system, for example, a wireless relay device and a wireless backhaul device may also be included, which are not shown in fig. 1. The embodiments of the present application do not limit the number of core network devices, and terminal devices included in the mobile communication system.

The network device is an access device that a terminal device accesses to the mobile communication system in a wireless manner, and may be a base station NodeB, an evolved base station eNodeB, a base station in an NR mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc., where the embodiment of the present application does not limit a specific technology and a specific device configuration adopted by the network device.

The Terminal device may also be referred to as a Terminal, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc. The terminal device may be a mobile phone, a tablet (Pad), a computer with wireless transceiving function, 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 driving (self driving), a wireless terminal in teleoperation (remote medical surgery), 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.

Network devices and terminal devices may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; the device can be deployed on the water surface; but also on aerial planes, balloons and satellites. The embodiment of the application does not limit the application scene of the network equipment and the terminal equipment.

Communication between the network device and the terminal device and between the terminal device and the terminal device can be performed through a licensed spectrum (licensed spectrum), communication can be performed through an unlicensed spectrum (unlicensed spectrum), and communication can be performed through both the licensed spectrum and the unlicensed spectrum. Communication between the network device and the terminal device and between the terminal device and the terminal device may be performed through a frequency spectrum of 6G or less, communication may be performed through a frequency spectrum of 6G or more, and communication may be performed using a frequency spectrum of 6G or less and a frequency spectrum of 6G or more at the same time. The embodiments of the present application do not limit the spectrum resources used between the network device and the terminal device.

It should be understood that the present application is not limited to specific forms of network devices and terminal devices.

Currently, the terminal device determines the power value P of uplink transmission based on information such as its maximum transmission power, nominal power of a cell, path loss, modulation coding scheme (modulation and coding scheme, MCS), and the number of radio resources, see the following formula (1):

P＝min{P _CMAX ,10log(L)+P ₀ +αPL+Δ _TF +f(i)} (1)

Wherein P is _CMAX Representing the maximum transmit power of the terminal device; l represents the number of sub-bands occupied by uplink transmission; p (P) ₀ Indicating a desired received power level at the network device side; alpha represents a path loss compensation factor; PL represents an estimate of uplink loss; delta _TF A power offset value representing a transmission power of the different MCS formats with respect to the reference MCS format; f (i) represents a transmission power control (Transmit Power Control, TPC) adjustment amount of the terminal device, i.e. an uplink transmission power adjustment amount, which may be carried in a TPC field of an uplink scheduling grant of DCI in a downlink control physical channel (Physical Downlink Control Channel, PDCCH).

The network device instructs the adjustment step size f (i) through a power control command based on the previously measured uplink received power, so that the terminal device adjusts the transmission power based on f (i), and the power control command is carried in TPC fields of uplink scheduling grants (DCI formats 0-0 and 0-1). Each power control command contains 2 bits corresponding to 4 different adjustment steps, such as { -1,0,1,3} dbm.

Therefore, in the above technical solution, it is difficult to accurately indicate the uplink transmission power by the power adjustment amount f (i) indicated by the power control command sent by the network device to the terminal device.

However, in the new data services such as augmented reality, real-time monitoring and high-definition video, very high requirements are put forward on the uplink transmission capability of the mobile communication system, so that in order to meet the high requirements on the uplink transmission capability, the uplink throughput is improved, the mobile communication system is required to support more uplink transmission stream numbers, and multi-station cooperation is introduced. In this case, the interference environment of the uplink transmission is inevitably more complex, and performing high-precision uplink power control helps to suppress the near-far effect and multi-user interference. Therefore, how to perform high-precision indication on uplink transmission power is a current urgent problem to be solved.

Aiming at the technical problems, the uplink power indication scheme provided by the application introduces a first reference point, and indicates continuous power values based on the numerical value of the first reference point and M downlink reference signals so as to realize high-precision indication of the power values.

To facilitate an understanding of the embodiments of the present application, the following description is made.

First, the "predefining" may be implemented by pre-storing corresponding codes, tables, or other means that may be used to indicate relevant information in devices (including, for example, terminal devices and network devices), and the application is not limited to a specific implementation thereof.

The "pre-configuration" may be implemented by pre-storing a corresponding code, table or other manner that may be used to indicate relevant information in a device (including, for example, a terminal device and a network device), or may be implemented by signaling pre-configuration, for example, by signaling pre-configuration by a network device, where the specific implementation manner is not limited in this application.

Second, the "protocol" referred to in the embodiments of the present application may refer to a standard protocol in the field of communications, and may include, for example, an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited in this application.

Third, "determining" and "selecting" are used interchangeably herein and are intended to mean that the meaning is consistent, e.g., the network device determines the first reference point from a predetermined plurality of reference points and the network device selects the first reference point from the predetermined plurality of reference points to be the same meaning.

Fourth, in the embodiments of the present application, the descriptions of "when … …", "in the case of … …", "if" and the like all refer to that the device (e.g., the terminal device or the network device) will make a corresponding process under some objective condition, and are not limited in time, nor do the devices (e.g., the terminal device or the network device) require an action of determining when implemented, nor do other limitations mean that there are any other limitations.

The communication method provided in the embodiment of the present application will be described below with reference to the accompanying drawings.

It should be understood that the following description is given mainly for the purpose of understanding and explanation, and the method provided in the embodiments of the present application is mainly given by taking the interaction between a network device and a terminal device as an example. The terminal device may be, for example, any one of the terminal devices in the communication system shown in fig. 1, such as the terminal device 130 or the terminal device 140, and the network device may be the network device 120 in the communication system shown in fig. 1.

It should be understood that this should not constitute any limitation as to the subject matter of the method provided herein. The method provided in the embodiment of the present application may be executed as a main body of execution of the method provided in the embodiment of the present application, as long as the method provided in the embodiment of the present application can be executed by a program having a code of the method provided in the embodiment of the present application. For example, the terminal device shown in the following embodiments may be replaced with a component in the terminal device, such as a chip, a chip system, or other functional modules capable of calling a program and executing the program, and the network device may be replaced with a component in the network device, such as a chip, a chip system, or other functional modules capable of calling a program and executing the program.

Fig. 2 is an interaction schematic diagram of information transmission provided in an embodiment of the present application. Referring to fig. 2, in the embodiment of the present application, the network device 210 includes a radio resource control (radio resource control, RRC) signaling interaction module 211, a medium access control (Media Access Control, MAC) signaling interaction module 212, and a physical layer (PHY) signaling interaction module 213; the terminal device 220 may include an RRC signaling interworking module 221, a MAC signaling interworking module 222, and a PHY signaling and data interworking module 223.

Wherein, RRC signaling is transmitted between the RRC signaling interaction module 211 and the RRC signaling interaction module 221; the MAC signaling exchange module 212 and the MAC signaling exchange module 222 transmit media access control element (media access control control element, MAC-CE) signaling; the PHY signaling and data interaction module 213 sends downlink control signaling (e.g., PDCCH) and/or downlink data (e.g., physical downlink shared channel (physical downlink shared channel, PDSCH)) to the PHY signaling and data interaction module 223, and the PHY signaling and data interaction module 223 sends uplink control signaling (e.g., physical uplink control channel (physical uplink control channel, PUCCH)) and/or uplink data (e.g., physical uplink shared channel (physical uplink shared channel, PUSCH)) to the PHY signaling and data interaction module 213.

The terminal device and the network device may perform signaling and/or data transmission based on the interaction diagram of information transmission shown in fig. 2, and specifically may include at least one of the following:

the terminal device sends uplink reference signals (e.g., sounding reference signals (sounding reference signal, SRS)) to the network device for channel measurement;

the network device sends signaling (e.g., DCI) to the terminal device, indicating uplink transmission;

the network device sends a downlink reference signal (for example, a channel state information reference signal (channel state information reference signal, CSI-RS)) to the terminal device for uplink power control indication;

the terminal equipment receives signaling (e.g. DCI) and downlink reference signals (e.g. CSI-RS) sent by the network equipment, determines uplink sending power according to the channel measurement result and signaling indication, and sends uplink data.

Fig. 3 is a schematic flow chart of a communication method 300 provided in an embodiment of the present application. As shown in fig. 3, the method 300 may include some or all of the following processes S310 and S340. The various steps in method 300 are described below.

S310, the network device determines a first reference point for dividing M sub-bands into n first sub-bands and M-n second sub-bands, M > n > 0, and M and n are integers.

S320, the network device sends, to the terminal device, indication information of the first reference point, where the indication information of the first reference point is used to indicate a value of the first reference point, and the value of the first reference point is used to indicate n.

Correspondingly, the terminal device receives the indication information from the first reference point of the network device.

S330, the network device sends M downlink reference signals on the M sub-bands respectively.

Correspondingly, the terminal device receives M downlink reference signals from the network device on the M subbands respectively.

S340, the terminal equipment determines a power value according to the value of the first reference point and the M downlink reference signals.

It should be noted that, the M subbands may be subbands occupied by the network device sending a downlink reference signal (e.g., CSI-RS) to the terminal device.

The first sub-band is one type of sub-band of the M sub-bands, and the second sub-band is another type of sub-band of the M sub-bands. It is also understood that the first reference point divides the M sub-bands into the first n first sub-bands and the second M-n second sub-bands according to the frequency domain positions of the sub-bands, or the first reference point divides the M sub-bands into the first M-n second sub-bands and the first n sub-bands according to the frequency domain positions of the sub-bands.

Referring to fig. 4, the network device sends a downlink reference signal to the terminal device, wherein the downlink reference signal occupies 10 sub-bands, and after the 10 sub-bands are divided by the first reference point, the first 4 sub-bands are the first sub-band, and the last 6 sub-bands are the second sub-band.

The value of the first reference point is related to n, e.g. the value of the first reference may be the ratio of n and M, n or M-n.

Optionally, a plurality of reference points are preset for the M sub-bands, and the number of the first sub-bands corresponding to each reference point is different, or the proportion of the first sub-bands corresponding to each reference point in the M sub-bands is different, that is, the numerical value of each reference point is different. Referring to fig. 4, the number of the first subbands corresponding to the reference point 1 is 2, or the ratio of the first subbands corresponding to the reference point 1 in the M subbands is 0.2, that is, the value of the reference point 1 is 2 or 0.2, similarly, the value of the reference point 2 is 4 or 0.4, the value of the reference point 3 is 6 or 0.6, and the value of the reference point 4 is 8 or 0.8.

In S310 described above, the network device determines the first reference point, that is, the number n of the first subbands, or the proportion of the first subbands in the M subbands (that is, the ratio of n to M). For example, the network device may determine the first reference point from a preset plurality of reference points. For example, the plurality of reference points may be the 4 reference points described above in fig. 4.

The network device may determine the first reference point according to the power value of uplink transmission to be indicated or the adjustment amount of uplink transmission power, or select the first reference point from a plurality of preset reference points.

Alternatively, the rule corresponding to the first reference point and n may be determined by the terminal device, or specified by a protocol, or semi-statically indicated in the candidate rule by RRC signaling.

The power value of the uplink transmission may be detected based on the uplink reference signal. For example, the terminal device may send an uplink reference signal (e.g. SRS) to the network device, where the network device receives the uplink reference signal, performs channel estimation based on the uplink reference signal to obtain uplink channel information of the terminal device, and calculates the uplink power value ρ according to the uplink channel information of the terminal device _UL The method comprises the steps of carrying out a first treatment on the surface of the Further, the network device may transmit the power value ρ according to the uplink _UL And a power reference value

Determining an adjustment amount Δρ of uplink transmission power _UL Wherein the power reference value +.>

The uplink transmission power can be the open loop power control result or the last indicated uplink transmission power; for example, the adjustment amount Δρ of the uplink transmission power _UL The following formula (2) may be satisfied:

the power value mentioned hereinafter may be the power value of the uplink transmission or an adjustment amount of the uplink transmission power.

The network device may convert the power value into a first value y, y being greater than 0 and less than 1, and determine the first reference point according to the first value y.

In the process that the network device converts the power value into the first value y, the network device can convert the power value into the first value y located on the interval (0, 1) through a transformation function y=f (ρ), wherein ρ is the power value ρ of the uplink transmission _UL Or the adjustment amount Deltaρ of the uplink transmission power _UL . The transformation function f (·) may be pre-set, e.g. in the network device, or may be pre-configured, e.g. semi-statically indicated to the terminal device by the network device through RRC signaling, or may be protocol defined.

For example, if the power adjustment amount Δρ of the uplink is the same _UL The value of (2) is located in the interval [ -S, S]The transformation function f (·) can be specified in two forms as shown in fig. 5a or 5b, where the transformation function in fig. 5a will be interval [ -S, S]The value of the upper is linearly transformed to the interval (0, 1), and the expression can be written as

The transformation function in FIG. 5b will be interval [ -S, S]The upper value is quantized uniformly by several bits.

The network device may determine the first reference point according to the first value y, for example, the network device may select, from a plurality of preset reference points, a reference point closest to the first value y as the first reference point.

For example, as shown in fig. 4, assuming that the first value y of the power value transformed to the interval (0, 1) by the transformation function is 0.42, the values from the reference point 1 to the reference point 4 shown in fig. 4 are sequentially 0.2, 0.4, 0.6, and 0.8, wherein the value of the reference point 2 is closest to the first value y, the network device determines that the first reference point is the reference point 2 in fig. 4.

In some embodiments, the network device may send first indication information to the terminal device, where the first indication information is used to indicate that the power value indicated by the network device is an uplink power value or an uplink power adjustment amount.

It should be noted that, in the above S320, the indication information of the first reference point may be used to indicate the value of the first reference point. For example, in fig. 4, the values from the reference point 1 to the reference point 4 may be indicated by the 2bit indication information, for example, the value of the reference point 1 may be indicated by 00, the value of the reference point 2 may be indicated by 01, the value of the reference point 3 may be indicated by 10, and the value of the reference point 4 may be indicated by 11. If the first reference point is determined to be the reference point 2, the indication information of the first reference point is 01.

It should be understood that the indication information of the first reference point is 2 bits, which is only an example and not limiting in any way. For example, the indication information of the first reference point may be 1bit, the first reference point may be one of 2 preset reference points, and the indication information of the first reference point may indicate one of the two preset reference points through two values (for example, 0 and 1) respectively; for another example, the indication information of the first reference point may be 3 bits, and the first reference point may be one of 8 preset reference points.

Alternatively, the indication information of the first reference point may be carried in DCI. For example, when the indication information of the first reference point is 2 bits, the value of the first reference point is indicated by 2 bits in the uplink scheduling grant TPC field in the DCI.

In addition, it should be further understood that, in the foregoing description, only the network device determines the first reference point corresponding to one terminal device, and sends the indication information of the first reference point to the terminal device is taken as an example for explanation. However, the present application is not limited to this embodiment, and the network device may determine a first reference point corresponding to each of the plurality of terminal devices, and send indication information of the first reference point to the plurality of terminal devices, respectively.

In the embodiment of the application, the network device combines the indication information of the first reference point and the M downlink reference signals to realize the indication of the power value. The first reference point and the indication information of the first reference point are described above, and M downlink reference signals are described below.

For example, the network device may perform downlink precoding on the M downlink reference signals according to the downlink channel information and the first uplink precoding information of each of the M subbands. For example, the M-th sub-band of the M sub-bands corresponds to the downlink reference signal of the downlink precoding P _DL,m The following formula (3) is satisfied:

wherein H is _DL,m For the downlink channel information corresponding to the m-th sub-band,

and the first uplink precoding information corresponding to the m-th sub-band.

The first uplink precoding information of each sub-band may be determined by the network device according to the first reference point and the second uplink precoding information.

For example, when an mth sub-band of the M sub-bands is a first sub-band, first uplink precoding information of the mth sub-band

Is equivalent channel power alpha based on n first sub-bands ^pre And second uplink precoding information P of the m-th sub-band _UL,m Determining second uplink precoding information P _UL,m Is detected based on an uplink reference signal (e.g., SRS).

Optionally, when the mth sub-band is the first sub-band, the first uplink precoding information

The following formula (4) is satisfied:

wherein the equivalent channel power alpha of the first sub-band ^pre The following formula (5) is satisfied:

in the formula (5), Q is the sum of the powers of M downlink reference signals, Q _i For the ith reference point among the preset plurality of reference points, round (Mq _i ) Equal to n, the round function is used to get the result of the rounding operation.

For another example, when an mth sub-band of the M sub-bands is the second sub-band, the first uplink precoding information of the mth sub-band

Is equivalent channel power alpha based on M-n second sub-bands ^post And second uplink precoding information P of the m-th sub-band _UL,m Determining second uplink precoding information P _UL,m Is detected based on an uplink reference signal (e.g., SRS).

Optionally, when the mth sub-band is the second sub-band, the first uplink precoding information

The following formula (6) is satisfied:

wherein the equivalent channel power alpha of the second sub-band ^post The following formula (7) is satisfied:

alternatively, the downlink channel information may be detected based on an uplink reference signal (e.g., SRS).

For example, the network device may send M downlink reference signals after downlink precoding on M subbands, respectively.

It may be understood that the network device may send M downlink reference signals corresponding to each terminal device to p terminal devices respectively, and send M downlink reference signals to p terminal devices through M subbands respectively, that is, M subbands for carrying the downlink reference signals for each terminal device are the same. In this case, the downlink precoding P of the downlink reference signal corresponding to the M-th subband among the M subbands _DL,m The following formula (8) is satisfied:

the downlink channel information of the m-th sub-band is a matrix formed by the downlink channel information corresponding to p terminal devices respectively, and the first uplink precoding information of the m-th sub-band is a matrix formed by the first uplink precoding information corresponding to p terminal devices respectively. Specifically, on the m-th sub-frequency band, the downlink channel matrixes corresponding to the p terminal devices are connected in series in the vertical direction to obtain the downlink channel information matrixes of the p terminal devices, and the first uplink precoding information vectors corresponding to the p terminal devices are connected in series in the vertical direction to obtain the uplink precoding information matrixes of the p terminal devices.

Alternatively, p is a positive integer, and when p=1, the formula (8) is identical to the formula (3) described above.

In S340 described above, the terminal device may determine the power value based on the received information of the first reference point and the M downlink reference signals. As described above, the power value may be an uplink power value or an uplink power adjustment amount.

As a possible implementation manner of S340, the terminal device may determine, according to the value of the first reference point and the M downlink reference signals, a first equivalent channel power and a second equivalent channel power, where the first equivalent channel power is a sum of equivalent channel powers of the downlink reference signals carried on the n first sub-bands, and the second equivalent channel power is a sum of equivalent channel powers of the downlink reference signals carried on the M sub-bands, and further, the terminal device determines the power value according to a ratio of the first equivalent channel power to the second equivalent channel power. Wherein the description of the first sub-band and the second sub-band has been described above.

The terminal device obtains a value of the first reference point based on the indication information of the first reference point, where the value of the first reference point may be, for example, the number n of the first sub-bands, or the value of the first reference point may be, for example, a ratio of n to M. The ratio of n to M at the first reference point is described below as an example.

For example, as shown in fig. 4, based on the indication information 01 of the first reference point, the terminal device obtains the value of the first reference point as 0.4, obtains the sum of the equivalent channel powers of the downlink reference signals carried on the first 4 first sub-bands of the 10 sub-bands as the first equivalent channel power, and obtains the sum of the equivalent channel powers of the downlink reference signals carried on the last 6 second sub-bands of the 10 sub-bands as the second equivalent channel power. Furthermore, the terminal device performs inverse transformation on the ratio y' of the first equivalent channel power and the second equivalent channel power according to the transformation function to obtain a power value, that is, the power value satisfies the following formula (9):

ρ＝f ^-1 (y′) (9)

wherein ρ is the power value ρ of the uplink transmission _UL Or the adjustment amount Deltaρ of the uplink transmission power _UL . When ρ is the adjustment amount Δρ of the uplink transmission power _UL In this case, the terminal device may determine the power value ρ of the uplink transmission based on the above formula (2) _UL 。

Alternatively, the terminal device may allocate the uplink power value to each of the M subbands as the uplink transmit power of each subband, for example, the terminal device may equally allocate the uplink power value to each subband, or equally allocate the uplink power value to each subband by a water injection method.

The execution sequence of S320 and S330 is not limited in this embodiment. For example, the network device may send M downlink reference signals through M subbands while sending indication information of the first reference point to the terminal device; or the network device may sequentially transmit, for example, M downlink reference signals are first transmitted in M subbands, and then the indication information of the first reference point is transmitted.

Therefore, in the network device of the embodiment of the present application, the power value of the terminal device is indicated by the indication information of the first reference point and the M downlink reference signals respectively transmitted in the M sub-bands, and compared with the case that in the prior art, four discrete power adjustment amounts can be indicated only by 2 bits of DCI, the high-precision indication of the power value is realized in the scheme.

The method provided in the embodiment of the present application is described in detail above with reference to fig. 3 to 5. The following describes in detail the apparatus provided in the embodiments of the present application with reference to fig. 6 to 7.

Fig. 6 is a schematic block diagram of a communication device provided in an embodiment of the present application. As shown in fig. 6, the apparatus 500 may include: a transceiver unit 510 and a processing unit 520.

Alternatively, the communication apparatus 500 may correspond to the terminal device in the above method embodiment, for example, may be a terminal device, or a component (e.g., a chip or a chip system, etc.) configured in the terminal device.

It is to be understood that the communication apparatus 500 may correspond to the terminal device in the method shown in fig. 3 according to an embodiment of the present application, and the communication apparatus 500 may include a unit for performing the method performed by the terminal device in the method in fig. 3. And, each unit in the communication device 500 and the other operations and/or functions described above are respectively for implementing the corresponding flow of the method in fig. 3.

When the communication apparatus 500 is configured to perform the method in fig. 3, the transceiver unit 510 may be configured to receive indication information from a first reference point of a network device, where the first reference point is configured to divide M subbands into n first subbands and M-n second subbands, M > n > 0, and M and n are integers, the indication information of the first reference point is configured to indicate a value of the first reference point, and the value of the first reference point is configured to indicate n; the processing unit 520 may be configured to determine a power value according to the value of the first reference point and M downlink reference signals, where the M downlink reference signals are received by the terminal device on the M subbands, respectively.

In some embodiments, the processing unit 520 is specifically configured to: determining a first equivalent channel power and a second equivalent channel power according to the value of the first reference point and the M downlink reference signals, wherein the first equivalent channel power is the sum of equivalent channel powers of the downlink reference signals carried on n first sub-frequency bands, and the second equivalent channel power is the sum of equivalent channel powers of the downlink reference signals carried on M sub-frequency bands; the power value is determined based on a ratio of the first equivalent channel power to the second equivalent channel power.

In some embodiments, the power value is a power value of an uplink transmission.

In some embodiments, the power value is a power adjustment amount for uplink transmission.

In some embodiments, the transceiver unit 510 is further configured to: and receiving first indication information from the network equipment, wherein the first indication information is used for indicating that the power value is the power value of uplink transmission or the power adjustment quantity of uplink transmission.

In some embodiments, the transceiver unit 510 is further configured to: m downlink reference signals from the network device are received on the M sub-bands, respectively.

It should be understood that the transceiver unit 510 may be used to perform step S320 and step S330 in the method shown in fig. 3, and the processing unit 510 may be used to perform step S340 in the method shown in fig. 3. It should be understood that the specific process of each unit performing the corresponding steps has been described in detail in the above method embodiments, and is not described herein for brevity.

Alternatively, the communication apparatus 500 may correspond to the network device in the above method embodiment, for example, may be a network device, or may be a component (such as a chip or a chip system, etc.) configured in the network device.

It should be understood that the communication apparatus 500 may correspond to the network device in the method shown in fig. 3 according to an embodiment of the present application, and the communication apparatus 500 may include a unit for performing the method performed by the network device in the method in fig. 3. And, each unit in the communication device 500 and the other operations and/or functions described above are respectively for implementing the corresponding flow of the method in fig. 3.

Wherein when the communication device 500 is used to perform the method of fig. 3, the processing unit 520 is operable to determine a first reference point for dividing the M frequency subbands into n first frequency subbands and M-n second frequency subbands, M > n > 0, and M and n are integers; the transceiver unit 510 may be configured to send, to a terminal device, indication information of the first reference point, where the indication information of the first reference point is used to indicate a value of the first reference point, the value of the first reference point is used to indicate n, and the M downlink reference signals are sent by the network device on the M subbands respectively.

In some embodiments, the processing unit 520 is specifically configured to: converting the power value into a first value y, wherein y is greater than 0 and less than 1; the first reference point is determined based on the first value y.

In some embodiments, the processing unit 520 is further configured to: determining first uplink precoding information of each sub-band of the M sub-bands according to the first reference point; according to the downlink channel information and the first uplink precoding information of each sub-band in the M sub-bands, carrying out downlink precoding on the M downlink reference signals; and respectively transmitting the M downlink reference signals on the M sub-bands.

In some embodiments, when the subband is the first subband, the first uplink precoding information of the subband is determined based on the equivalent channel powers of the n first subbands and the second uplink precoding information of the subband; when the sub-band is the second sub-band, the first uplink precoding information of the sub-band is determined based on the equivalent channel power of the M-n second sub-bands and the second uplink precoding information of the sub-bands; the second uplink precoding information is obtained based on uplink reference signal detection.

In some embodiments, the downlink channel information of the subband is a matrix formed by downlink channel information corresponding to p terminal devices, the first uplink precoding information of the subband is a matrix formed by first uplink precoding information corresponding to p terminal devices, and p is a positive integer.

In some embodiments, the transceiver unit 510 is further configured to: and sending first indication information to the terminal equipment, wherein the first indication information is used for indicating that the power value is the power value of uplink transmission or the power adjustment quantity of uplink transmission.

It should be understood that the transceiver unit 520 may be used to perform step S320 and step S330 in the method shown in fig. 3, and the processing unit 520 may be used to perform step S310 in the method shown in fig. 3. It should be understood that the specific process of each unit performing the corresponding steps has been described in detail in the above method embodiments, and is not described herein for brevity.

When the communication device 500 is a terminal device, the transceiver unit 510 in the communication device 500 may be implemented by a transceiver, for example, may correspond to the transceiver 610 in the communication device 600 shown in fig. 7, and the processing unit 520 in the communication device 500 may be implemented by at least one processor, for example, may correspond to the processor 620 in the communication device 600 shown in fig. 7.

When the communication apparatus 500 is a network device, the transceiver unit 510 in the communication apparatus 500 may be implemented by a transceiver, for example, may correspond to the transceiver 610 in the communication apparatus 600 shown in fig. 7, and the processing unit 520 in the communication apparatus 500 may be implemented by at least one processor, for example, may correspond to the processor 620 in the communication apparatus 600 shown in fig. 7.

When the communication apparatus 500 is a chip or a chip system configured in a communication device (such as a terminal device or a network device), the transceiver unit 510 in the communication apparatus 500 may be implemented by an input/output interface, a circuit, or the like, and the processing unit 520 in the communication apparatus 500 may be implemented by a processor, a microprocessor, or an integrated circuit integrated on the chip or the chip system.

Fig. 7 is another schematic block diagram of a communication device provided by an embodiment of the present application. As shown in fig. 7, the communication apparatus 600 may include: a transceiver 610, a processor 620, and a memory 630. Wherein the transceiver 610, the processor 620 and the memory 630 communicate with each other through an internal connection path, the memory 630 is used for storing instructions, and the processor 620 is used for executing the instructions stored in the memory 630 to control the transceiver 610 to transmit signals and/or receive signals.

It should be understood that the communication apparatus 600 may correspond to a terminal device or a network device in the above-described method embodiment, and may be used to perform the steps and/or flows performed by the terminal device or the network device in the above-described method embodiment. The memory 630 may optionally include read-only memory and random access memory and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. The memory 630 may be a separate device or may be integrated into the processor 620. The processor 620 may be configured to execute instructions stored in the memory 630 and when the processor 620 executes the instructions stored in the memory, the processor 620 is configured to perform the steps and/or processes of the method embodiments described above corresponding to the terminal device or network device.

Optionally, the communication apparatus 600 is a terminal device in the previous embodiment.

Optionally, the communication apparatus 600 is a network device in the previous embodiment.

Among other things, transceiver 610 may include a transmitter and a receiver. Transceiver 610 may further include antennas, the number of which may be one or more. The processor 620 and the memory 630 and the transceiver 610 may be devices integrated on different chips. For example, the processor 620 and the memory 630 may be integrated in a baseband chip and the transceiver 610 may be integrated in a radio frequency chip. The processor 620 and the memory 630 may also be devices integrated on the same chip as the transceiver 610. The present application is not limited in this regard.

Alternatively, the communication apparatus 600 is a component configured in a terminal device, such as a chip, a chip system, or the like.

Alternatively, the communication apparatus 600 is a component configured in a network device, such as a chip, a chip system, or the like.

The transceiver 620 may also be a communication interface, such as an input/output interface, a circuit, etc. The transceiver 620 may be integrated in the same chip as the processor 610 and the memory 630, such as in a baseband chip.

The application also provides a processing device, which comprises at least one processor, wherein the at least one processor is used for executing the computer program stored in the memory, so that the processing device executes the method network equipment executed by the terminal equipment in the embodiment of the method.

The embodiment of the application also provides a processing device which comprises a processor and an input/output interface. The input-output interface is coupled with the processor. The input/output interface is used for inputting and/or outputting information. The information includes at least one of instructions and data. The processor is configured to execute the computer program, so that the processing device executes the method network device executed by the terminal device in the method embodiment.

The embodiment of the application also provides a processing device, which comprises a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program from the memory, so that the processing device executes the method network device executed by the terminal device in the method embodiment.

It should be understood that the processing means described above may be one or more chips. For example, the processing device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated chip (application specific integrated circuit, ASIC), a system on chip (SoC), a central processing unit (central processor unit, CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), a microcontroller (micro controller unit, MCU), a programmable controller (programmable logic device, PLD) or other integrated chip.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein.

It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capability. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, or discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

According to the method provided by the embodiment of the application, the application further provides a computer program product, which comprises: computer program code which, when run on a computer, causes the computer to perform the method performed by the terminal device or the network device in the above-described method embodiments.

According to the method provided in the embodiment of the present application, there is further provided a computer readable storage medium storing program code, which when executed on a computer, causes the computer to perform the method performed by the terminal device or the network device in the embodiment of the method.

According to the method provided by the embodiment of the application, the application also provides a communication system, and the communication system can comprise the terminal equipment and the network equipment.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between 2 or more computers. Furthermore, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with one another in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software 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.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be substantially contributing or a part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An uplink power indication method, which is characterized by comprising the following steps:

the terminal equipment receives indication information of a first reference point from the network equipment, wherein the first reference point is used for dividing M sub-bands into n first sub-bands and M-n second sub-bands, M is more than n and more than 0, M and n are integers, the indication information of the first reference point is used for indicating the numerical value of the first reference point, and the numerical value of the first reference point is used for indicating n;

and the terminal equipment determines a power value according to the value of the first reference point and M downlink reference signals, wherein the M downlink reference signals are respectively received by the terminal equipment on the M sub-frequency bands.

2. The method according to claim 1, wherein the determining, by the terminal device, a power value according to the value of the first reference point and the M downlink reference signals includes:

The terminal equipment determines first equivalent channel power and second equivalent channel power according to the value of the first reference point and the M downlink reference signals, wherein the first equivalent channel power is the sum of equivalent channel powers of the downlink reference signals carried on n first sub-frequency bands, and the second equivalent channel power is the sum of equivalent channel powers of the downlink reference signals carried on M sub-frequency bands;

the terminal equipment determines the power value according to the ratio of the first equivalent channel power to the second equivalent channel power.

3. The method according to claim 1 or 2, wherein the power value is an uplink power value or an uplink power adjustment amount.

4. A method according to claim 3, characterized in that the method further comprises:

the terminal equipment receives first indication information from the network equipment, wherein the first indication information is used for indicating that the power value is the power value of uplink transmission or the power adjustment quantity of uplink transmission.

5. The method according to any one of claims 1 to 4, further comprising:

and the terminal equipment receives M downlink reference signals from the network equipment on the M sub-bands respectively.

6. An uplink power indication method, which is characterized by comprising the following steps:

the network equipment determines a first reference point, wherein the first reference point is used for dividing M frequency sub-bands into n first frequency sub-bands and M-n second frequency sub-bands, M is more than n and more than 0, and M and n are integers;

the network device sends indication information of the first reference point to the terminal device, the indication information of the first reference point is used for indicating the value of the first reference point, the value of the first reference point is used for indicating n, and the M downlink reference signals are respectively sent by the network device on the M sub-bands.

7. The method of claim 6, wherein the network device determining the first reference point comprises:

the network device converts the power value into a first value y, wherein y is greater than 0 and less than 1;

the network equipment determines the first reference point according to the first value y.

8. The method according to claim 6 or 7, characterized in that the method further comprises:

the network equipment determines first uplink precoding information of each sub-band in the M sub-bands according to the first reference point;

the network equipment performs downlink precoding on the M downlink reference signals according to the downlink channel information and the first uplink precoding information of each sub-band in the M sub-bands;

And the network equipment respectively transmits the M downlink reference signals on the M sub-frequency bands.

9. The method of claim 8, wherein when the subband is the first subband, the first uplink precoding information of the subband is determined based on the equivalent channel powers of the n first subbands and the second uplink precoding information of the subband;

when the sub-band is the second sub-band, the first uplink precoding information of the sub-band is determined based on the equivalent channel power of the M-n second sub-bands and the second uplink precoding information of the sub-bands;

the second uplink precoding information is obtained based on uplink reference signal detection.

10. The method according to claim 8 or 9, wherein the downlink channel information of the subband is a matrix formed by downlink channel information corresponding to p terminal devices, the first uplink precoding information of the subband is a matrix formed by first uplink precoding information corresponding to the p terminal devices, and p is a positive integer.

11. The method of claim 7, wherein the power value is an uplink power value or an uplink power adjustment amount.

12. The method of claim 11, wherein the method further comprises:

the network device sends first indication information to the terminal device, where the first indication information is used to indicate that the power value is an uplink power value or an uplink power adjustment amount.

13. A communication device, comprising:

the receiving and transmitting unit is used for receiving indication information of a first reference point from network equipment, wherein the first reference point is used for dividing M sub-bands into n first sub-bands and M-n second sub-bands, M is greater than n and greater than 0, M and n are integers, the indication information of the first reference point is used for indicating the numerical value of the first reference point, and the numerical value of the first reference point is used for indicating n;

and the processing unit is used for determining a power value according to the value of the first reference point and M downlink reference signals, wherein the M downlink reference signals are respectively received by the receiving and transmitting unit on the M sub-bands.

14. The apparatus according to claim 13, wherein the processing unit is specifically configured to:

determining a first equivalent channel power and a second equivalent channel power according to the value of the first reference point and the M downlink reference signals, wherein the first equivalent channel power is the sum of equivalent channel powers of the downlink reference signals carried on n first sub-frequency bands, and the second equivalent channel power is the sum of equivalent channel powers of the downlink reference signals carried on M sub-frequency bands;

The power value is determined based on a ratio of the first equivalent channel power to the second equivalent channel power.

15. The apparatus according to claim 13 or 14, wherein the power value is an uplink power value or an uplink power adjustment amount.

16. The apparatus of claim 15, wherein the transceiver unit is further configured to:

and receiving first indication information from the network equipment, wherein the first indication information is used for indicating that the power value is the power value of uplink transmission or the power adjustment quantity of uplink transmission.

17. The apparatus according to any one of claims 13 to 16, wherein the transceiver unit is further configured to:

and respectively receiving M downlink reference signals from the network equipment on the M frequency subbands.

18. A communication device, comprising:

the processing unit is used for determining a first reference point, wherein the first reference point is used for dividing M sub-bands into n first sub-bands and M-n second sub-bands, M is more than n and more than 0, and M and n are integers;

the receiving and transmitting unit is configured to send, to a terminal device, indication information of the first reference point, where the indication information of the first reference point is used to indicate a value of the first reference point, the value of the first reference point is used to indicate n, and the M downlink reference signals are sent by a network device on the M subbands respectively.

19. The apparatus according to claim 18, wherein the processing unit is specifically configured to:

converting the power value into a first value y, wherein y is greater than 0 and less than 1;

and determining the first reference point according to the first value y.

20. The device according to claim 18 or 19, wherein,

the processing unit is further configured to: determining first uplink precoding information of each sub-band in the M sub-bands according to the first reference point; performing downlink precoding on the M downlink reference signals according to the downlink channel information and the first uplink precoding information of each of the M sub-bands;

the transceiver unit is further configured to send the M downlink reference signals on the M subbands, respectively.

21. The apparatus of claim 20, wherein when the subband is the first subband, the first uplink precoding information for the subband is determined based on the n first subbands 'equivalent channel powers and the subband's second uplink precoding information;

22. The apparatus according to claim 20 or 21, wherein the downlink channel information of the subband is a matrix of downlink channel information corresponding to p terminal devices, the first uplink precoding information of the subband is a matrix of first uplink precoding information corresponding to the p terminal devices, and p is a positive integer.

23. The apparatus of claim 19, wherein the power value is an uplink power value or an uplink power adjustment amount.

24. The apparatus of claim 23, wherein the transceiver unit is further configured to:

and sending first indication information to the terminal equipment, wherein the first indication information is used for indicating that the power value is the power value of uplink transmission or the power adjustment quantity of uplink transmission.

25. A communication device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 1 to 14.

26. A chip, comprising: a processor for invoking and executing computer instructions from memory to cause a device on which the chip is mounted to perform the method of any of claims 1-12.

27. A computer readable storage medium storing computer program instructions for causing a computer to perform the method of any one of claims 1 to 12.

28. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 12.

29. An apparatus comprising logic circuitry and an input-output interface, wherein the input-output interface is to receive signals from or transmit signals to other communication devices outside the apparatus, and wherein the logic circuitry is to execute code instructions to implement the method of any one of claims 1 to 12.