CN109151973B

CN109151973B - Power control method and device

Info

Publication number: CN109151973B
Application number: CN201710462039.9A
Authority: CN
Inventors: 刘建琴; 夏兵兵
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-06-16
Filing date: 2017-06-16
Publication date: 2023-09-08
Anticipated expiration: 2037-06-16
Also published as: WO2018228504A1; CN109151973A

Abstract

The embodiment of the invention provides a power control method and a device, wherein the power control method can receive first indication information sent by network equipment; determining power control parameters of a plurality of reference signal resources in a reference signal resource set based on the first indication information; the plurality of reference signal resources are transmitted based on power control parameters of the plurality of reference signal resources. It can be seen that the power control method can determine the total transmit power of the reference signal resources based on the first indication information transmitted by the base station.

Description

Power control method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a power control method and apparatus.

Background

In a communication system, different kinds of reference signals are generally used to acquire channel quality information or channel state information. For example, sounding reference signals (Sounding Reference Signal, SRS) may be used for Beam Management (BM) and may also be used to obtain channel state information (Channel State Information, CSI). The beam management means that the base station selects a better transmitting beam for the terminal or a better receiving beam for the base station according to the beam measurement result of the SRS; the obtaining of the channel state information refers to that the base station determines the channel state of the terminal for sending uplink data according to the received SRS sent by the terminal, so as to select the indication such as Rank Indicator (RI), precoding matrix Indicator (Precoding Matrix Indicators, PMI), channel quality Indicator (Channel Quality Indicator, CQI) and the like for the terminal.

However, when the terminal transmits uplink data such as SRS and PUSCH, the transmission power setting of the reference signal will be different based on different transmission purposes of the reference signal, for example, according to whether the transmission of the reference signal is used for beam management or channel state information acquisition. Specifically, when the reference signal is used for beam management, it may employ a different transmit power setting than PUSCH, and when this reference signal is used for acquisition of channel state information, it may employ the same transmit power setting as PUSCH. Therefore, in the new NR scenario, how to set the transmission power of the reference signal and the uplink traffic data based on different transmission requirements and purposes is a problem to be solved.

Disclosure of Invention

The embodiment of the invention provides a power control method and a power control device, which are beneficial to power control of reference signal resources.

In a first aspect, an embodiment of the present invention provides a power control method, where a terminal may receive first indication information sent by a network device, and determine, based on the first indication information, power control parameters of a plurality of reference signal resources in a reference signal resource set; the plurality of reference signal resources are transmitted based on power control parameters of the plurality of reference signal resources. It can be seen that the power control method can perform power control on each reference signal based on the first indication information sent by the network device, where the first indication information can be determined by the base station according to the purpose of sending the reference signal, for example, according to whether the sending of the reference signal is used for beam management or channel state information acquisition, so as to increase flexibility of power control of the reference signal.

Optionally, when the plurality of reference signal resources are used for acquiring the channel state information CSI, the plurality of reference signal resources need a plurality of sets of power control parameters, and therefore, the first indication information may include N sets of power control parameters, where the N sets of power control parameters are applicable to the plurality of reference signal resources, respectively.

Since the power control mechanism of the reference signal is the same as that of the physical uplink shared channel PUSCH, in addition, the power control parameters of the reference signal and the power control parameters of the reference signal are partially shared, and the shared power control parameters can be signaled to the terminal through a higher layer signaling. However, when the reference signal resource is used to obtain the channel state information, the network device configures N sets of power control parameters, so that the terminal cannot know which set of power control parameters can be used as the power control parameters of a PUSCH transmission. If the PUSCH power control parameter is sent to the terminal alone, the signaling overhead will be excessive.

In order to save the overhead, in the N sets of power control parameters configured by the network device, each set of power control parameters is a power control parameter shared by a reference signal resource and a physical uplink shared channel PUSCH, N is a positive integer, and at the same time, the network device may send second indication information to instruct the terminal to select a set of power control parameters for the PUSCH from the N sets of power control parameters.

That is, the power control method may further include the steps of: receiving second indication information sent by the network equipment; the second indication information is used for indicating one set of power control parameters in the N sets of power control parameters; determining a set of power control parameters from the N sets of power control parameters based on the second indication information; and transmitting the PUSCH based on the set of power control parameters. The second indication information is notified through physical layer signaling. As can be seen, in this embodiment, the power control parameter of the PUSCH is notified by the first instruction information and the second instruction information, and thus signaling overhead can be saved compared with the power control parameter of the reference signal resource and the power control parameter of the PUSCH, respectively.

Optionally, the second indication information may be a reference signal resource indication, and accordingly, the terminal determines a set of power control parameters from the N sets of power control parameters based on the second indication information, including: the terminal determines the number of the reference signal resource indicated by the reference signal resource indication; and the terminal determines a set of power control parameters corresponding to the number from the N sets of power control parameters to be used as the power control parameters of the PUSCH. It can be seen that the embodiment enables the reference signal resource indication (SRS Resource Indicator, SRI) to be used not only for indicating or assisting the precoding information based on PUSCH transmission, but also to be multiplexed into a power control parameter for indicating how the terminal selects to transmit PUSCH, thereby further saving signaling overhead. The SRI indicates a number of one of a plurality of reference signal resources sent by the terminal, and when the SRI is used for indicating or assisting precoding information based on PUSCH transmission, the precoding information is precoding information used by the terminal to send the reference signal resource of the number.

Optionally, when the reference signal resource is used for beam management, the preferred terminal transmitting beam or the network device receiving beam selects the power setting for uplink data transmission according to the channel quality measurement result or the beam quality measurement result for the reference signal resource. To avoid this effect, when the reference signal resources are used for beam management, each reference signal resource in the reference signal resource set should use the same power control parameter (in this case, the power control parameter used by the SRS resource is independent of the power control parameter of the PUSCH). However, since the measured path loss values of the terminal for different paths corresponding to different beams are different, in order to avoid the influence of the factors that cause inaccurate beam selection due to different reference signal resources or different powers corresponding to the beams, optionally, a common path loss value adopted by each reference signal resource may be set to be a path loss value common to each beam.

That is, the power control method may further include: receiving third indication information sent by the network equipment, wherein the third indication information is used for indicating a calculation rule of the public path loss value; and determining a path loss value in the power control parameters of the plurality of reference signal resources based on the calculation rule of the path loss value, wherein the path loss value is applicable to the plurality of reference signal resources. It can be seen that this embodiment can ensure that the beam selection is based on the same total transmit power, thereby improving the accuracy of the beam selection.

Wherein the calculation rule comprises using an average of the path loss measurements of the plurality of reference signals as the path loss value of the plurality of reference signals and/or selecting a maximum of the path loss measurements of the plurality of reference signals as the path loss value of the plurality of reference signals.

Wherein the third indication information is notified through higher layer signaling and/or physical layer signaling.

Wherein the first indication information is notified through a higher layer signaling, and the higher layer signaling includes radio resource control RRC signaling. The second indication information is notified through physical layer signaling.

In a second aspect, an embodiment of the present invention further provides a power control method, where the power control method is described from a network device side, and the power control method may include: the network equipment sends first indication information to the terminal; and receiving a plurality of reference signal resources transmitted by the terminal based on the power control parameters determined by the first indication information. It can be seen that the power control of the reference signal resource by the terminal is determined according to the first indication information sent by the network device.

In order to save the overhead, in N sets of power control parameters configured by the network equipment, each set of power control parameters is a power control parameter shared by a reference signal resource and a Physical Uplink Shared Channel (PUSCH), N is a positive integer, and simultaneously, the network equipment can send second indication information to the terminal, wherein the second indication information is used for indicating one set of power control parameters in the N sets of power control parameters; and receiving the PUSCH transmitted by the terminal based on the power control parameter determined by the second indication information. The second indication information is notified through physical layer signaling. In this embodiment, the network device uses the first indication information and the second indication information to notify the power control parameter of the PUSCH, so that signaling overhead can be saved compared with the power control parameter of the reference signal resource and the power control parameter of the PUSCH.

Optionally, the second indication information is a reference signal resource indication, where the reference signal resource indication is used by the terminal to determine a set of power control parameters from the N sets of power control parameters. It can be seen that the embodiment enables the reference signal resource indication (SRS Resource Indicator, SRI) to be used not only for indicating or assisting the precoding information based on PUSCH transmission, but also to be multiplexed into a power control parameter for indicating how the terminal selects to transmit PUSCH, thereby further saving signaling overhead. The SRI indicates a number of one of a plurality of reference signal resources sent by the terminal, and when the SRI is used for indicating or assisting precoding information based on PUSCH transmission, the precoding information is precoding information used by the terminal to send the reference signal resource of the number.

Optionally, when the reference signal is used for beam management, the power control method may further include: sending third indication information to the terminal; the third indication information is used for indicating a calculation rule of path loss values in power control parameters of the plurality of reference signal resources, and the path loss values determined based on the calculation rule are applicable to the plurality of reference signal resources. It can be seen that this embodiment can ensure that the beam selection is based on the same total transmit power, thereby improving the accuracy of the beam selection.

Wherein the first indication information is notified through a higher layer signaling, and the higher layer signaling includes radio resource control RRC signaling.

In a third aspect, an embodiment of the present invention further provides a power control apparatus, where the power control apparatus has a function of implementing the power control method described in the first aspect or the second aspect. The above functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the functions described above. For example, the power control apparatus may include a receiving unit, a determining unit, and a transmitting unit, or the power control apparatus may include a transmitting unit and a receiving unit.

In a fourth aspect, an embodiment of the present invention further provides a power control device, where the power control device may include a processor, a memory, and a communication interface, where the processor is connected to the communication interface and the memory, respectively; the memory is used for storing program instructions; the processor is configured to invoke program instructions in the memory, so that the device implements the power control method according to any aspect of the embodiments of the present invention.

In a fifth aspect, embodiments of the present invention further provide a computer-readable storage medium having instructions stored therein that, when executed on a computer, implement a power control method as described in any of the above aspects.

In a sixth aspect, embodiments of the present invention further provide a computer program product, which when executed by a processor, can implement the power control method provided in any of the first or second aspects.

In a seventh aspect, the embodiment of the present invention further provides a power control system, where the power control system includes a terminal and a network device; the terminal is configured to execute the power control method described in the first aspect; the network device is configured to perform the power control method according to the second aspect.

Drawings

In order to more clearly describe the embodiments of the present invention or the technical solutions in the background art, the following description will describe the drawings that are required to be used in the embodiments of the present invention or the background art.

Fig. 1 is a schematic structural diagram of a wireless communication system according to an embodiment of the present invention;

fig. 2 is a schematic flow chart of a power control method according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of N sets of power control parameters according to an embodiment of the present invention;

fig. 4 is a flow chart of another power control method according to an embodiment of the present invention;

fig. 5 is a flowchart of another power control method according to an embodiment of the present invention;

fig. 6 is a flowchart of another power control method according to an embodiment of the present invention;

fig. 7 is a flowchart of another power control method according to an embodiment of the present invention;

fig. 8 is a flowchart of another power control method according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a power control device according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of another power control device according to an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of an apparatus according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

FIG. 13 is a schematic diagram of another apparatus according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a network device according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

It should be understood that the technical solution of the present application may be applied in various communication systems, for example: the technical scheme of the present application can also be used for future networks, such as a fifth generation mobile communication technology (The Fifth Generation Mobile Communication Technology, 5G) system, which can also be called a New Radio, NR, end-to-end (D2D) system, a machine-to-machine (machine to machine, M2M) system, etc., with the continuous development of communication technology, such as global system for mobile communication (Global System of Mobile communication, GSM), code Division multiple access (Code Division Multiple Access, CDMA), wideband code Division multiple access (Wideband Code Division Multiple Access, WCDMA), time Division synchronous code Division multiple access (TD-Synchronous Code Division Multiple Access, TD-SCDMA), universal mobile communication system (Universal Mobile Telecommunication System, UMTS), long term evolution (Long Term Evolution, LTE) system, etc.

The communication involved in the embodiment of the application can be communication between a base station and a terminal, or between a base station and a base station, such as between a macro base station and a small base station, or between a terminal and a terminal, such as in a D2D network. The embodiment of the application takes communication between a base station and user equipment as an example. The user equipment may refer to a wireless terminal or a wired terminal. The wireless terminal may be a device providing voice and/or data connectivity to a user, a handheld device having wireless connectivity, or other processing device connected to a wireless modem, which may communicate with one or more core networks via a radio access network (e.g., RAN, radio access network). For example, the user equipment may be a mobile terminal, such as a mobile telephone (or "cellular" telephone) and a computer with a mobile terminal, or a portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile device, such as a personal communication service (Personal Communication Service, PCS) telephone, cordless telephone, session initiation protocol (Session Initiation Protocol, SIP) phone, wireless local loop (Wireless Local Loop, WLL) station, personal digital assistant (Personal Digital Assistant, PDA), etc., that exchanges voice and/or data with the radio access network. Alternatively, the User equipment may also be called a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), a Subscriber Unit (SU), a Subscriber Station (Subscriber Station, SS), a Mobile Station (MB), a Remote Station (RS), an Access Point (AP), a Remote Terminal (RT), an Access Terminal (AT), a User Terminal (UT), a User Agent (UA), a Terminal Device (UD), and the like, which are not limited by the present application.

In the present application, the network device may include a base station, a transmission reception point (Transmission Reception Point, TRP), or a radio frequency unit, such as a remote radio unit (Remote Radio Unit, RRU), or the like. A base station may refer to a device in an access network that communicates over the air-interface, through one or more sectors, with terminals, which may coordinate management of attributes for the air-interface. For example, the base station may be a base station in GSM or CDMA, such as a base transceiver station (base transceiver station, BTS), a base station in WCDMA, such as a NodeB, an evolved base station in LTE, such as an eNB or e-NodeB (evolutional Node B), a base station in a 5G system, or a base station in a future network, etc., and the present application is not limited. Alternatively, the base station may be a relay device, or other network element device with a base station function.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a wireless communication system according to an embodiment of the present application, and as shown in fig. 1, the wireless communication system is illustrated by taking a network device as an example of a base station and a terminal as an example of a notebook computer.

Among them, different kinds of reference signals are generally used between the network device and the terminal for acquiring channel quality or channel state information. For example, sounding reference signals (Sounding Reference Signal, SRS) may be used for Beam Management (BM) and may also be used to obtain channel state information (Channel State Information, CSI).

When the terminal transmits uplink data, the terminal transmits the uplink data based on a downlink control instruction (Downlink control Indicator, DCI) sent by the network device to the terminal. For example, a sounding resource indication (sounding resource index, SRI) field in the DCI may be used to indicate an index corresponding to one of a plurality of SRS resources sent by the network device in the terminal, and the terminal performs uplink data transmission based on an SRS channel quality measurement result corresponding to the index. The uplink data generally includes a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH), a physical uplink control channel (Physical Uplink Control Channel, PUSCH), an uplink reference signal resource, and the like.

When the terminal transmits the reference signal, it needs to determine the total transmitting power, i.e. to control the power of the reference signal, where the power control is based on evaluating the indexes such as the received signal strength or the signal-to-noise ratio of the network device, and the transmitting power is changed in time to compensate the path loss and fading in the wireless channel, so that the communication quality is maintained and no additional interference is generated to other users in the same wireless resource.

Therefore, in order to determine the total transmission power of the reference signal, the embodiment of the invention provides a power control method, a device and a terminal, which are beneficial to power control.

Referring to fig. 2, fig. 2 is a flow chart of a power control method according to an embodiment of the invention. Wherein, the power control method may include the steps of:

s101, a terminal receives first indication information sent by network equipment;

s102, the terminal determines power control parameters of a plurality of reference signal resources in a reference signal resource set based on the first indication information;

s103, the terminal transmits the plurality of reference signal resources based on the power control parameters of the plurality of reference signal resources.

In step S103, the terminal sending each reference signal resource based on the power control parameter of each reference signal resource may include: the terminal determines the total transmitting power of each reference signal based on the power control parameter of each reference signal resource and the power control mechanism shown in the following formula (2); each reference signal is transmitted based on the total transmit power.

Wherein the first indication information is notified by a higher layer signaling including Radio Resource Control (RRC) signaling

It can be seen that the power control method shown in fig. 2 may perform power control on each reference signal based on the first indication information sent by the network device.

Since the power control mechanism of the reference signal is the same as that of the physical uplink shared channel PUSCH, in addition, the power control parameters of the reference signal and the power control parameters of the reference signal are partially shared, and these shared power control parameters can be signaled to the terminal together through higher layer signaling, for example, radio resource control (Radio Resource Control, RRC) signaling. The user may then be informed of the transmit power setting for SRS or PUSCH by higher layer signaling or physical layer signaling, respectively, for another portion of the power control parameters that are not shared, such as by DCI signaling.

For example, the total power of the transmission corresponding to the power control mechanism of the PUSCH may be set by the following formula (1),

here, P _CMAX,c (i) The total transmitting power of the terminal on the carrier c of the main service cell is given;

M _PUSCH,c (i) Scheduling the number of resource blocks for the PUSCH, wherein the unit is PRB;

P _{O_PUSCH,c} (j) Includes P _{O_NOMINAL_PUSCH,c} (j) And P _{O_UE_PUSCH,c} (j) Two items, for characterizing target received power of terminal, semi-statically configured by higher layer RRC signaling, where P _{O_NOMINAL_PUSCH,c} (j) Is a cell specific parameter, 8 bits is semi-statically configured by RRC signaling.

α _c (j) Is a path loss compensation factor, cell specific parameters, 3 bits, also semi-statically configured by higher layer RRC signaling;

PL _c the path loss measurement value of the terminal based on RSRP;

The power adjustment values of different modulation and coding modes are configured semi-statically by high-level RRC signaling for specific parameters of a cell;

f _c (i) The closed loop power adjustment quantity is a feedback value quantized by the receiving end according to the receiving/measuring error.

Alternatively, the total power of transmission corresponding to the SRS power control mechanism may be set by the following formula (2),

here, P _CMAX,c (i) The total transmitting power of the characterization terminal on the carrier c of the main serving cell is the same as the total transmitting power of the PUSCH power control;

P _{SRS_OFFSET} characterizing a power offset for SRS, resulting from a higher layer RRC signaling semi-static indication;

M _SRS representing the number of SRS scheduling resource blocks, wherein the unit is PRB;

P _{O_PUSCH,c} (j) The target receiving power of the terminal is represented and is the same as the total power of the PUSCH power control transmission;

α _c (j) The method comprises the steps that a path loss compensation factor is represented and is the same as the total power of PUSCH power control transmission;

PL _c the route loss measured value of the characterization terminal based on the RSRP is the same as the total power of the PUSCH power control transmission;

f _c (i) The closed loop power adjustment quantity is the same as the total power of the PUSCH power control transmission;

for example, when the total transmission power of SRS is set by using the above formula (2) and the total transmission power of PUSCH is set by using the above formula (1), each set of power control parameters that can be shared by SRS and PUSCH that are signaled by the network device through higher layer signaling may include P _{O_PUSCH,c} (j)，α _c (j)，PL _c And f _c (i) And the like.

Wherein the SRS-specific power control parameter includes P _{SRS_OFFSET} And M _SRS While the PUSCH-specific power control parameters include M _PUSCH,c (i) And delta _TF,c (i)。

When the reference signal resources are used for acquiring CSI, the power control parameters corresponding to each reference signal resource are different, so the network device may configure N sets of power control parameters for M SRS resources in the SRS resource set (where M > =1, 1< N < =m), the first indication information may include N sets of power control parameters, where the N sets of power control parameters are power control parameters shared by the reference signal resources and the PUSCH, and the network device may notify the N sets of power control parameters (PC parameter) to the terminal through the first indication information in the higher layer signaling, and each set of power control parameters may be shared by the reference signal resources and the PUSCH. In another embodiment, optionally, the base station configures a type B SRS resource set for the UE, where one SRS resource set includes M SRS resources, and configures N sets of power control parameters corresponding to the M SRS resources in the SRS resource set, where 1< = N < = M. For example, the correlation may be that the SRS transmission beam direction of the terminal is consistent with or strongly correlated with the reception beam direction when the terminal receives the CSI-RS.

As shown in fig. 3, fig. 3 is a schematic diagram of N sets of power control parameters according to an embodiment of the present invention, where the power control parameter corresponding to each reference signal resource number in the reference signal resource set is the same as the power control parameter that may be adopted for future PUSCH transmission.

However, although the network device may notify the power control parameters of each reference signal resource through the first indication information, only one set of power control parameters is required for one PUSCH transmission, so that the terminal cannot determine which set of power control parameters is selected from the N sets of power control parameters for the current PUSCH transmission.

In order to solve the problem, referring to fig. 4, fig. 4 is a flowchart of another power control method according to an embodiment of the present invention, where the power control method described in fig. 4 can further determine a power control parameter of PUSCH. Specifically, the power control method shown in fig. 4 may further include the following steps in addition to S101 to S103 described above:

s104, the terminal receives second indication information sent by the network equipment;

s105, the terminal determines a set of power control parameters from the N sets of power control parameters based on the second indication information;

S106, the terminal transmits the PUSCH by using the set of power control parameters.

Wherein the terminal transmitting the PUSCH using the set of power control parameters may include: the terminal determines the total transmission power of the PUSCH based on the set of power control parameters and the above equation (1); the PUSCH is transmitted based on the total transmit power.

The second indication information may be notified through physical layer signaling, which may be DCI signaling.

It can be seen that, when the network device configures multiple sets of power control parameters for the terminal, the terminal may select one set of power control parameters from the multiple sets of power control parameters to send the PUSCH based on the second indication information, without directly informing the terminal of the power control parameters used by the PUSCH, that is, adopting the first indication information and the second indication information to inform the power control parameters of the PUSCH, which is more capable of saving signaling overhead than respectively sending the power control parameters of the reference signal resource and the power control parameters of the PUSCH.

As an optional implementation manner, the second indication information may be a reference signal resource indication, and accordingly, the terminal determines a set of power control parameters from the N sets of power control parameters based on the second indication information, including:

The terminal determines the number of the reference signal resource indicated by the reference signal resource indication;

and the terminal determines a set of power control parameters corresponding to the number from the N sets of power control parameters to be used as the power control parameters of the PUSCH.

It can be seen that the embodiment enables the reference signal resource indication (SRS Resource Indicator, SRI) to be used not only for indicating or assisting the precoding information based on PUSCH transmission, but also to be multiplexed into a power control parameter for indicating how the terminal selects to transmit PUSCH, thereby further saving signaling overhead. The SRI indicates a number of one of a plurality of reference signal resources sent by the terminal, and when the SRI is used for indicating or assisting precoding information based on PUSCH transmission, the precoding information is precoding information used by the terminal to send the reference signal resource of the number.

Optionally, the second indication information may also be a single DCI signaling other than SRI, for example, for performing interference coordination, etc., the power control parameter configuration of the UE specifically for PUSCH may be a sub-optimal or any other parameter configuration corresponding to RS resources.

Since the reference signal resource is used for beam management, the preferred terminal transmit beam or the network device receive beam is the power setting for uplink data transmission selected according to the channel quality measurement result or the beam quality measurement result for the reference signal resource. For example, according to reference signal received power (Reference Signal Received Power, RSRP) or channel state information (Channel State Information, CSI), wherein the channel state information includes at least one of Rank Indication (RI), channel quality Indication (Channel Quality Indication, CQI), precoding matrix Indication (Precoding Matrix Indication, PMI), etc.

Optionally, the beam quality measurement may also include a reference signal received quality (Reference Signal Received Quality, RSRQ) or the like.

Therefore, when the total transmission power of different reference signal resources is different and affects the received power of the reference signal, it may result in that the terminal transmission beam selected by the network device or the network device reception beam is not preferable.

For example, when the terminal transmits multiple reference signal resources corresponding to different beams, the total transmission power of the reference signal corresponding to a certain beam is larger, so that the channel quality or the RSRP of the beam is the largest in the beam measurement result, but the beam is not necessarily the preferred beam due to the larger total transmission power of the beam, that is, the power factor may affect the selection of the beam.

To avoid this effect, when the reference signal resources are used for beam management, each reference signal resource in the reference signal resource set adopts the same power control parameter (in this case, the power control parameter adopted by the SRS resource is irrelevant to the power control parameter of the PUSCH), for example, the power control parameters of the respective reference signal resources are uniformly set by the formula (3),

In the formula (3), M is compared with the formula (2) of setting total transmission power when SRS is used for obtaining CSI _SRS,c (i) Representing the number of SRS specific scheduling resource blocks, wherein the unit is PRB; p (P) _{O_SRS,c} (i) Representing SRS-specific terminal target received power; alpha _SRS,c (i) Representing SRS-specific path loss compensation factors; f (f) _SRS,c (i) Indicating an SRS-specific closed loop power adjustment amount; PL (PL) _c Representing the path loss value measured by the terminal.

However, since the measured path loss values corresponding to the different beams of the terminal are different, in order to avoid the problem of mismatching beam selection caused by the influence of the power factor, the beam path loss values adopted by each reference signal resource may be set to be common to a plurality of beams, and specifically, referring to fig. 5, fig. 5 is a schematic flow diagram of another power control method provided in an embodiment of the present invention, where step S501 in the power control method shown in fig. 5 is the same as step S101 in the power control method shown in fig. 2, and will not be described in detail herein.

S502, the terminal determines power control parameters of a plurality of reference signal resources in a reference signal resource set based on first indication information;

s503, the terminal receives third indication information sent by the network equipment;

S504, the terminal determines path loss values in power control of a plurality of reference signal resources based on the third indication information, wherein the path loss values are applicable to the plurality of reference signal resources;

s505, the terminal transmits a plurality of reference signal resources according to the power control parameter.

Wherein the power control parameter is determined based on the first indication information and the second indication information.

It can be seen that when the reference signal resources are used for beam management, the power control parameters of the reference signal resources corresponding to each beam are the same, and the path loss measurement value in the power control parameters is determined based on the calculation method indicated by the network device, so that it can be ensured that the beam selection is performed based on the reference signal resources of the plurality of beams by using the same total transmission power, thereby improving the accuracy of the beam selection.

Referring to fig. 6, fig. 6 is a flowchart of another power control method according to an embodiment of the present invention, where the power control method shown in fig. 6 is described from a network device side, and specifically, the power control method shown in fig. 6 may include the following steps:

s601, network equipment sends first indication information to a terminal;

S602, the network device receives a plurality of reference signal resources transmitted by the terminal based on the power control parameter determined by the first indication information.

It can be seen that the power control of the reference signal resource by the terminal is determined according to the first indication information sent by the network device.

Further, since the power control of the reference signal is based on the same power control mechanism as that of the PUSCH and the power control parameters of the reference signal and the PUSCH are partially shared, conventionally, the network device notifies the terminal of the same set or sets of power control parameters, and the same set or sets of power control parameters can be applied to transmit the reference signal and the PUSCH, thereby saving signaling overhead.

However, since the reference signal may require multiple reference signal resources when used for CSI acquisition and beam management, the network device needs to configure multiple sets of power control parameters for the terminal, and only one set of power control parameters is required for one PUSCH transmission, which makes the above method of simultaneously notifying the power control parameters of SRS and PUSCH impractical.

In order to solve the problem, the network device may configure N sets of power control parameters for M SRS resources in the SRS resource set (where M > =1, 1< N < = M), and the first indication information may include N sets of power control parameters, where the N sets of power control parameters are power control parameters shared by the reference signal resource and the PUSCH of the physical uplink shared channel, and in another embodiment, the base station may optionally configure a type B SRS resource set for the UE, where one SRS resource set includes M SRS resources, and simultaneously configure N sets of power control parameters corresponding to M SRS resources in the SRS resource set, where 1< = N < = M. For example, the correlation may be that the SRS transmission beam direction of the terminal is consistent with or strongly correlated with the reception beam direction when the terminal receives the CSI-RS. As shown in fig. 3, fig. 3 is a schematic diagram of N sets of power control parameters according to an embodiment of the present invention, where the power control parameter corresponding to each reference signal resource number in the reference signal resource set is the same as the power control parameter corresponding to each PUSCH power parameter number.

In this way, the network device may notify the terminal of the N sets of power control parameters (PC parameter) through the first indication information in the higher layer signaling, where each set of power control parameters may be shared by the reference signal resource and the PUSCH, and further indicate, through the second indication information, which set of power control parameters is used by the PUSCH.

Specifically, referring to fig. 7, fig. 7 is a flowchart of another power control method according to an embodiment of the present invention, where the power control method may further include the following steps in addition to the steps S601 to S602:

s603, the network equipment sends second indication information to the terminal;

s604, the network device receives PUSCH transmitted by the terminal based on the power control parameter determined by the second indication information.

The second indication information is used for indicating one set of power control parameters in the N sets of power control parameters as the power control parameters of the PUSCH.

As can be seen, in this embodiment, by setting N sets of power control parameters that can be simultaneously applied to the reference signal resource and the PUSCH, and then indicating one set of power control parameters as the PUSCH by the second indication information, signaling overhead can be saved compared with respectively sending the power control parameters of the N sets of reference signal resource and the power control parameters of the one set of PUSCH to the terminal.

Further, the second indication information may be a reference signal resource indication, and the determining, by the terminal, a set of power control parameters from the N sets of power control parameters based on the second indication information includes:

It can be seen that the embodiment enables the reference signal resource indication (SRS Resource Indicator, SRI) to be used not only for indicating or assisting the precoding information based on PUSCH transmission, but also to be multiplexed into a power control parameter for indicating how the terminal selects to transmit PUSCH, thereby further saving signaling overhead. The SRI indicates a number of one of a plurality of reference signal resources sent by the terminal, and when the SRI is used for indicating or assisting precoding information based on PUSCH transmission, the precoding information is precoding information used by the terminal to send the reference signal resource of the number. Optionally, the second indication information may also be a single DCI signaling other than SRI, for example, for performing interference coordination, etc., the power control parameter configuration of the UE specifically for PUSCH may be a sub-optimal or any other parameter configuration corresponding to RS resources.

Referring to fig. 8, fig. 8 is a flowchart of another power control method according to an embodiment of the present invention, where the power control method is illustrated from a network device side. When the reference signal resources are used for beam management, the preferred terminal transmit beam or base station receive beam is the power setting selected for uplink data transmission based on channel quality measurements or beam quality measurements for the reference signal resources. In order to avoid that the fairness of beam selection is affected due to the difference of the transmission power of each beam, when the reference signal resources are used for beam management, the same power control parameter is adopted for each reference signal resource in the reference signal resource set (at this time, the power control parameter adopted by the SRS resource is irrelevant to the power control parameter of the PUSCH), that is, N sets of power control parameters for M reference signal resources in the reference signal resource set included in the first indication information are the same, and of course, due to the difference of the beams adopted by different reference signal resources, the path loss value on each beam path is also different due to the difference of the beams, and in order to further control the total transmission power of each reference signal resource to be the same, the network device may set that the M reference signal resources adopt a uniform path loss value, that is, the path loss value is a path loss value common to each beam.

Specifically, referring to fig. 8, the power control method may include the following steps:

s801, network equipment sends first indication information to a terminal;

s802, the network equipment sends third indication information to the terminal;

s803, the network device receives a plurality of reference signal resources transmitted by the terminal based on the power control parameter determined by the first indication information and the third indication information.

That is, the third indication information is used to indicate a calculation rule of path loss values in the power control parameters of the plurality of reference signal resources, and the path loss values determined based on the calculation rule are applicable to the plurality of reference signal resources.

Wherein the calculation rule comprises using an average of the path loss measurements of the plurality of reference signals as the path loss values of the plurality of reference signals and/or selecting a maximum of the path loss measurements of the plurality of reference signals as the path loss values of the plurality of reference signals. Wherein the plurality of beam path loss measurement values are path loss values of reference signal resources on a plurality of beams measured by the terminal.

Wherein the third indication information may be notified through higher layer signaling and/or physical layer signaling.

It can be seen that when the reference signal resource is used for beam management, the power control parameter of each beam is the same, and the path loss measurement value in the power control parameter is determined based on the calculation method indicated by the network device, so that it can be ensured that the beam selection is performed based on the same total transmission power, thereby improving the accuracy of the beam selection.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a power control device according to an embodiment of the present invention, where the power control device may sample the power control methods corresponding to fig. 2 to 5, and specifically, the power control device may include the following units:

a receiving unit 901, configured to receive first indication information sent by a network device;

a determining unit 902, configured to determine power control parameters of a plurality of reference signal resources in a reference signal resource set based on the first indication information;

a transmitting unit 903, configured to transmit the plurality of reference signal resources based on the power control parameters of the plurality of reference signal resources.

As an alternative embodiment, when the reference signal resource is used to obtain the channel state information CSI, the plurality of reference signal resources need a plurality of sets of power control parameters, and thus, the first indication information may include N sets of power control parameters, where the N sets of power control parameters are applicable to the plurality of reference signal resources, respectively. Wherein N is a positive integer.

Since the power control mechanism of the reference signal is the same as that of the physical uplink shared channel PUSCH, in addition, the power control parameters of the reference signal and the power control parameters of the reference signal are partially shared, and the shared power control parameters can be signaled to the terminal through a higher layer signaling. However, when the reference signal resource is used to acquire the channel state information, the network device configures N sets of power control parameters, so that the terminal cannot know which set of power control parameters can be used as the power control parameters of the PUSCH. If the PUSCH power control parameter is sent to the terminal alone, the signaling overhead will be excessive.

That is, in the power control apparatus, the receiving unit 901 may further receive second instruction information sent by the network device; the second indication information is used for indicating one set of power control parameters in the N sets of power control parameters; a determining unit 902, configured to determine a set of power control parameters from the N sets of power control parameters based on the second indication information; the transmitting unit 903 may transmit the PUSCH based on the set of power control parameters. As can be seen, in this embodiment, the power control parameter of the PUSCH is notified by the first instruction information and the second instruction information, and thus signaling overhead can be saved compared with the power control parameter of the reference signal resource and the power control parameter of the PUSCH, respectively.

The second indication information may be a reference signal resource indication, and accordingly, the determining unit 902 determines a set of power control parameters from the N sets of power control parameters based on the second indication information may be: the determining unit 902 determines a number of the reference signal resource indicated by the reference signal resource indication; the determining unit 902 determines a set of power control parameters corresponding to the number from the N sets of power control parameters as a power control parameter of PUSCH. It can be seen that the embodiment enables the reference signal resource indication (SRS Resource Indicator, SRI) to be used not only for indicating the precoding information based on PUSCH transmission, but also to be multiplexed into a power control parameter for indicating how the terminal selects to transmit PUSCH, thereby further saving signaling overhead.

The SRI indicates a number of one of a plurality of reference signal resources sent by the terminal, and when the SRI is used for indicating precoding information based on PUSCH transmission, the precoding information is precoding information used by the terminal to send the reference signal resource of the number.

As another alternative embodiment, when the reference signal resource is used for beam management, the preferred terminal transmit beam or the network device receive beam is to select the power setting for uplink data transmission based on the channel quality measurement or beam quality measurement for the reference signal resource. To avoid this effect, when the reference signal resources are used for beam management, each reference signal resource in the reference signal resource set adopts the same power control parameter (in this case, the power control parameter adopted by the SRS resource is independent of the power control parameter of the PUSCH). However, since the path loss values measured by the terminal for different paths corresponding to different beams are different, in order to avoid the problem of mismatching of beam selection caused by the influence of the power factor, the path loss values in the beams adopted by each reference signal resource can be set to be common to a plurality of beams.

Therefore, the receiving unit 901 is further configured to receive third indication information sent by the network device, where the third indication information is used to indicate a calculation rule of a path loss value; the determining unit 902 is further configured to determine a path loss value in the power control parameters of the plurality of reference signal resources, based on the calculation rule of the path loss value, where the path loss value is applicable to the plurality of reference signal resources.

Wherein the calculation rule comprises using an average value of path loss measurements of a plurality of reference signals as the path loss value of the plurality of reference signals and/or selecting a maximum value of the path loss measurements of the plurality of reference signals as the path loss value of the plurality of reference signals.

The first indication information is notified through a higher layer signaling, wherein the higher layer signaling comprises Radio Resource Control (RRC) signaling.

It can be seen that this embodiment can ensure that the beam selection is based on the same total transmit power, thereby improving the accuracy of the beam selection.

Referring to fig. 10, fig. 10 is a schematic structural diagram of another power control device according to an embodiment of the present invention, where the power control device may sample the power control method corresponding to fig. 6 to 8, and specifically, the power control device may include the following units:

A transmitting unit 1001, configured to transmit the first indication information to the terminal.

A receiving unit 1002, configured to receive a plurality of reference signal resources sent by the terminal based on the power control parameter determined by the first indication information.

As an alternative embodiment, when the plurality of reference signal resources are used to obtain the channel state information CSI, the plurality of reference signal resources need a plurality of sets of power control parameters, and thus, the first indication information may include N sets of power control parameters, where the N sets of power control parameters are applicable to the plurality of reference signal resources, respectively.

The first indication information comprises N sets of power control parameters, each set of power control parameters is a power control parameter shared by a reference signal resource and a Physical Uplink Shared Channel (PUSCH), and N is a positive integer.

Correspondingly, the sending unit 1001 is further configured to send second indication information to the terminal, where the second indication information is used to indicate one set of power control parameters in the N sets of power control parameters; the receiving unit 1002 is further configured to receive a PUSCH transmitted by the terminal based on the power control parameter determined by the second indication information. In this embodiment, transmission section 1001 uses the first and second instruction information to notify the power control parameter of the PUSCH, and can save signaling overhead more than transmitting the power control parameter of the reference signal resource and the power control parameter of the PUSCH, respectively.

The second indication information may be a reference signal resource indication, where the reference signal resource indication is used by the terminal to determine a set of power control parameters from the N sets of power control parameters. It can be seen that the embodiment enables the reference signal resource indication (SRS Resource Indicator, SRI) to be used not only for indicating the precoding information based on PUSCH transmission, but also to be multiplexed into a power control parameter for indicating how the terminal selects to transmit PUSCH, thereby further saving signaling overhead. The SRI indicates a number of one of a plurality of reference signal resources sent by the terminal, and when the SRI is used for indicating precoding information based on PUSCH transmission, the precoding information is precoding information used by the terminal to send the reference signal resource of the number. Optionally, the second indication information may also be a single DCI signaling other than SRI, for example, for performing interference coordination, etc., the power control parameter configuration of the UE specifically for PUSCH may be a sub-optimal or any other parameter configuration corresponding to RS resources.

As another optional implementation manner, when the reference signal resource is used for beam management, the sending unit 1001 is further configured to send third indication information to the terminal; the third indication information is used for indicating a calculation rule of path loss values in power control parameters of the plurality of reference signal resources, and the path loss values determined based on the calculation rule are applicable to the plurality of reference signal resources.

Wherein the calculation rule comprises using an average value of path loss measurements of the plurality of reference signals as the path loss value of the plurality of reference signals and/or selecting a maximum value of the path loss measurements of the plurality of reference signals as the path loss value of the plurality of reference signals.

According to the foregoing method, fig. 11 is a schematic structural diagram of an apparatus provided in an embodiment of the present invention, and as shown in fig. 11, the apparatus may be a user equipment, or may be a chip or a circuit, for example, may be provided in a chip or a circuit of a terminal device. The user equipment may correspond to a terminal in the above method.

The device may include a processor 1110 and a memory 1120. The memory 1120 is used for storing instructions, and the processor 1110 is used for executing the instructions stored in the memory 1120 to implement the steps in the methods corresponding to fig. 2 to 5 as above.

Further, the apparatus may also include an input port 1140 and an output port 1150. Further, the device may further comprise a bus system 1130, wherein the processor 1110, the memory 1120, the input ports 1140 and the output ports 1150 may be connected via the bus system 1130.

The processor 1110 is configured to execute the instructions stored in the memory 1120 to control the input port 1140 to receive the signal, and control the output port 1150 to send the signal, thereby completing the steps of the terminal device in the above method. Wherein the input port 1140 and the output port 1150 may be the same or different physical entities. Which are the same physical entities, may be collectively referred to as transceivers. The memory 1120 may be integrated in the processor 1110 or may be provided separately from the processor 1110.

As an implementation, the functions of the input port 1140 and the output port 1150 may be considered to be implemented by a transceiver circuit or a dedicated chip for transceiving. Processor 1110 may be considered to be implemented by a dedicated processing chip, a processing circuit, a processor, or a general-purpose chip.

As another implementation manner, a manner of using a general-purpose computer may be considered to implement the terminal device provided by the embodiment of the present application. Program code that implements the functions of the processor 1110, the input port 1140 and the output port 1150 is stored in the memory, and a general-purpose processor implements the functions of the processor 1110, the input port 1140 and the output port 1150 by executing the code in the memory.

The concepts related to the technical solutions provided by the embodiments of the present application, explanation, detailed description and other steps related to the apparatus refer to the descriptions of the foregoing methods or other embodiments, and are not repeated herein.

Fig. 12 is a schematic structural diagram of a ue according to the present application. The user equipment may be adapted for use in the system shown in fig. 1. For ease of illustration, fig. 12 shows only the main components of the user device. As shown in fig. 12, the user equipment includes a processor, a memory, a control circuit, an antenna, and an input-output device. The processor is mainly configured to process the communication protocol and the communication data, control the entire terminal device, execute a software program, and process the data of the software program, for example, to support the terminal device to perform the actions described in the foregoing power control method embodiments. The memory is mainly used for storing software programs and data, such as the N sets of power control parameters, or overlapping information or interference indication information of downlink scheduling resources. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The control circuit together with the antenna, which may also be called a transceiver, is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user.

When the user equipment is started, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program and process the data of the software program. When data is required to be transmitted wirelessly, the processor carries out baseband processing on the data to be transmitted and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then transmits the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.

Those skilled in the art will appreciate that fig. 12 shows only one memory and processor for ease of illustration. In an actual user equipment, there may be multiple processors and memories. The memory may also be referred to as a storage medium or storage device, etc., and embodiments of the present invention are not limited in this respect.

As an alternative implementation manner, the processor may include a baseband processor, which is mainly used for processing the communication protocol and the communication data, and a central processor, which is mainly used for controlling the whole terminal device, executing a software program, and processing the data of the software program. The processor in fig. 12 integrates the functions of a baseband processor and a central processing unit, and those skilled in the art will appreciate that the baseband processor and the central processing unit may be separate processors, interconnected by bus technology, etc. Those skilled in the art will appreciate that the user device may include multiple baseband processors to accommodate different network formats, and the user device may include multiple central processors to enhance its processing capabilities, with the various components of the user device being connectable via various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit may also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, which is executed by the processor to realize the baseband processing function.

For example, in the embodiment of the invention, the antenna and the control circuit with the transceiving function may be regarded as the transceiving unit 1201 of the user equipment, and the processor with the processing function may be regarded as the processing unit 1202 of the user equipment. As shown in fig. 12, the user equipment includes a transceiving unit 1201 and a processing unit 1202. The transceiver unit may also be referred to as a transceiver, transceiver device, etc. Alternatively, a device for implementing a receiving function in the transceiver unit 1201 may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiver unit 1201 may be regarded as a transmitting unit, that is, the transceiver unit 1201 includes a receiving unit and a transmitting unit, where the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, a transmitting circuit, etc.

According to the foregoing method, fig. 13 is a schematic structural diagram of another device provided in an embodiment of the present invention, as shown in fig. 13, the device may be a network device, or may be a chip or a circuit, for example, may be disposed in the network device. The network device corresponds to the network device in the method. The device may include a processor 1310 and a memory 1320. The memory 1320 is configured to store instructions, and the processor 1310 is configured to execute the instructions stored in the memory 1320, to cause the apparatus to implement the methods described above with respect to fig. 6-8.

Further, the network may also include an input 1340 and an output 1350. Still further, the network may also include a bus system 1330.

Wherein the processor 1310, the memory 1320, the input port 1340, and the output port 1350 are connected through the bus system 1330, the processor 1310 is configured to execute instructions stored in the memory 1320, so as to control the input port 1340 to receive signals, and control the output port 1350 to send signals, thereby completing the steps of the network device in the method described above. Wherein the input 1340 and the output 1350 may be the same or different physical entities. Are the same physical entities and may be collectively referred to as input and output ports. The memory 1320 may be integrated into the processor 1310 or may be provided separately from the processor 1310.

As one implementation, the functions of the input port 1340 and the output port 1350 may be considered to be implemented by a transceiver circuit or a dedicated chip for transceiving. Processor 1310 may be considered to be implemented by a dedicated processing chip, a processing circuit, a processor, or a general-purpose chip.

As another implementation manner, a manner of using a general-purpose computer may be considered to implement the network device provided by the embodiment of the present application. I.e., program code that implements the functions of the processor 1310, the input port 1340, and the output port 1350 are stored in memory, and a general purpose processor implements the functions of the processor 1310, the input port 1340, and the output port 1350 by executing the code in memory.

The concepts related to the technical solutions provided by the embodiments of the present application, explanation, detailed description and other steps related to the devices refer to the descriptions of the foregoing methods or other embodiments, and are not repeated herein.

According to the foregoing method, fig. 14 is a schematic structural diagram of a network device, such as a base station, according to an embodiment of the present application. As shown in fig. 14, the network device may be applied to the system shown in fig. 1. The network device includes one or more radio frequency units such as a remote radio frequency unit (remote radio unit, RRU) 1401 and one or more baseband units (BBU) (also referred to as digital units, DUs) 1402. The RRU1401 may be referred to as a transceiver unit, transceiver circuitry, or transceiver, etc., which may include at least one antenna 14011 and a radio frequency unit 14012. The RRU1401 is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals into baseband signals, for example, for sending signaling messages to a terminal device as described in the above embodiments. The BBU202 is mainly used for baseband processing, control of a base station, and the like. The RRU1401 and BBU1402 may be physically located together or physically separate, i.e. distributed base stations.

The BBU1402 is a control center of a base station, 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. For example, the BBU (processing unit) may be configured to control the base station to perform the operation procedures described in the above method embodiments with respect to the network device.

In an example, the BBU1402 may be configured by one or more single boards, where the multiple single boards may support radio access networks of a single access system (such as an LTE network) together, or may support radio access networks of different access systems respectively. The BBU1402 also includes a memory 14021 and a processor 14022. The memory 14021 is used to store necessary instructions and data. For example, the memory 14021 stores N sets of power control parameters and the like in the above-described embodiment. The processor 14022 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation procedure related to the network device in the above method embodiment. The memory 14021 and processor 14022 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.

According to the method provided by the embodiment of the application, the embodiment of the application also provides a communication system which comprises the network equipment and one or more terminals.

It should be appreciated that in embodiments of the present application, the processor may be a central processing unit (Central Processing Unit, simply "CPU"), which may also be other general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory may 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 bus system may include a power bus, a control bus, a status signal bus, etc., in addition to the data bus. For clarity of illustration, however, the various buses are labeled in the drawings as bus systems.

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 also be understood that the first, second, third, fourth and various numerical numbers referred to herein are merely descriptive convenience and are not intended to limit the scope of embodiments of the present application.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments disclosed herein can 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 by the present 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 the embodiments of the present invention 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.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, 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 loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present invention, 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, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), etc.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method of power control, comprising:

receiving first indication information sent by network equipment;

determining power control parameters of a plurality of reference signal resources in a reference signal resource set based on the first indication information;

transmitting the plurality of reference signal resources based on power control parameters of the plurality of reference signal resources;

the first indication information comprises N sets of power control parameters, wherein each set of power control parameters is a power control parameter shared by a reference signal resource and a Physical Uplink Shared Channel (PUSCH), and N is a positive integer;

receiving second indication information sent by the network equipment; the second indication information is used for indicating one set of power control parameters in the N sets of power control parameters; the second indication information is notified through physical layer signaling;

Determining a set of power control parameters from the N sets of power control parameters based on the second indication information;

transmitting the PUSCH based on the set of power control parameters;

the second indication information is a reference signal resource indication, and the determining a set of power control parameters from the N sets of power control parameters based on the second indication information includes:

determining a number of the reference signal resource indicated by the reference signal resource indication;

and determining a set of power control parameters corresponding to the number from the N sets of power control parameters.

2. The method according to claim 1, wherein the method further comprises:

receiving third indication information sent by the network equipment, wherein the third indication information is used for indicating a calculation rule of a path loss value;

and determining a path loss value in the power control parameters of the plurality of reference signal resources based on the calculation rule of the path loss value, wherein the path loss value is applicable to the plurality of reference signal resources.

3. The method according to claim 2, wherein the calculation rule comprises using an average of the path loss measurements of the plurality of reference signals as the path loss value of the plurality of reference signals and/or selecting a maximum of the path loss measurements of the plurality of reference signals as the path loss value of the plurality of reference signals.

4. A method according to claim 2 or 3, characterized in that the third indication information is signalled by higher layer signalling and/or physical layer signalling.

5. A method according to claim 2 or 3, characterized in that the first indication information is signalled by higher layer signalling, which comprises radio resource control, RRC, signalling.

6. A method of power control, comprising:

sending first indication information to a terminal;

receiving a plurality of reference signal resources transmitted by the terminal based on the power control parameters determined by the first indication information;

transmitting second indication information to the terminal, wherein the second indication information is used for indicating one set of power control parameters in the N sets of power control parameters; the second indication information is notified through physical layer signaling; the second indication information is a reference signal resource indication, and the reference signal resource indication is used for the terminal to determine a set of power control parameters from the N sets of power control parameters;

And receiving the PUSCH transmitted by the terminal based on the power control parameter determined by the second indication information.

7. The method of claim 6, wherein the method further comprises:

sending third indication information to the terminal;

the third indication information is used for indicating a calculation rule of path loss values in power control parameters of the plurality of reference signal resources, and the path loss values determined based on the calculation rule are applicable to the plurality of reference signal resources.

8. The method according to claim 7, wherein the calculation rule comprises using an average of path loss measurements of the plurality of reference signals as path loss values for the plurality of reference signals and/or selecting a maximum of beam path loss measurements of the plurality of reference signals as path loss values for the plurality of reference signals.

9. The method according to claim 7 or 8, characterized in that the third indication information is signalled by higher layer signalling and/or physical layer signalling.

10. The method according to claim 7 or 8, characterized in that the first indication information is signalled by higher layer signalling, which comprises radio resource control, RRC, signalling.

11. A power control apparatus, comprising:

the receiving unit is used for receiving the first indication information sent by the network equipment;

a determining unit, configured to determine power control parameters of a plurality of reference signal resources in a reference signal resource set based on the first indication information;

a transmitting unit configured to transmit the plurality of reference signal resources based on power control parameters of the plurality of reference signal resources; the first indication information comprises N sets of power control parameters, each set of power control parameters is a power control parameter shared by a reference signal resource and a Physical Uplink Shared Channel (PUSCH), and N is a positive integer; the receiving unit is further configured to receive second indication information sent by the network device; the second indication information is used for indicating one set of power control parameters in the N sets of power control parameters; the second indication information is notified through physical layer signaling;

the determining unit is further configured to determine a set of power control parameters from the N sets of power control parameters based on the second indication information;

the sending unit is further configured to send the PUSCH based on the set of power control parameters;

The second indication information is a reference signal resource indication, and the determining unit determines a set of power control parameters from the N sets of power control parameters based on the second indication information specifically includes: determining a number of the reference signal resource indicated by the reference signal resource indication; and determining a set of power control parameters corresponding to the number from the N sets of power control parameters.

12. The apparatus of claim 11, wherein the device comprises a plurality of sensors,

the receiving unit is further configured to receive third indication information sent by the network device, where the third indication information is used to indicate a calculation rule of a path loss value;

the determining unit is further configured to determine a path loss value in the power control parameters of the plurality of reference signal resources based on a calculation rule of the path loss value, where the path loss value is applicable to the plurality of reference signal resources.

13. The apparatus according to claim 12, wherein the calculation rule comprises utilizing an average of path loss measurements of the plurality of reference signals as path loss values for the plurality of reference signals and/or selecting a maximum of path loss measurements of the plurality of reference signals as path loss values for the plurality of reference signals.

14. The apparatus according to claim 12 or 13, wherein the third indication information is signaled by higher layer signaling and/or physical layer signaling.

15. The apparatus according to claim 12 or 13, wherein the first indication information is signaled by higher layer signaling, including radio resource control, RRC, signaling.

16. A power control apparatus, comprising:

a sending unit, configured to send first indication information to a terminal;

a receiving unit, configured to receive a plurality of reference signal resources transmitted by the terminal based on the power control parameter determined by the first indication information; the first indication information comprises N sets of power control parameters, each set of power control parameters is a power control parameter shared by a reference signal resource and a Physical Uplink Shared Channel (PUSCH), and N is a positive integer;

the sending unit is further configured to send second indication information to the terminal, where the second indication information is used to indicate one set of power control parameters in the N sets of power control parameters; the second indication information is notified through physical layer signaling; the second indication information is a reference signal resource indication, and the reference signal resource indication is used for the terminal to determine a set of power control parameters from the N sets of power control parameters;

The receiving unit is further configured to receive a PUSCH transmitted by the terminal based on the power control parameter determined by the second indication information.

17. The apparatus of claim 16, wherein the device comprises a plurality of sensors,

the sending unit is further configured to send third indication information to the terminal;

18. The apparatus of claim 17, wherein the calculation rule comprises utilizing an average of path loss measurements of the plurality of reference signals as path loss values for the plurality of reference signals and/or selecting a maximum of the path loss measurements of the plurality of reference signals as path loss value for the plurality of reference signals.

19. The apparatus according to claim 17 or 18, wherein the third indication information is signalled by higher layer signalling and/or physical layer signalling.

20. The apparatus according to claim 17 or 18, wherein the first indication information is signaled by higher layer signaling, including radio resource control, RRC, signaling.