CN117882447A

CN117882447A - Power control method and device for Sounding Reference Signal (SRS)

Info

Publication number: CN117882447A
Application number: CN202280002643.2A
Authority: CN
Inventors: 罗星熠
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2024-04-12
Also published as: WO2024031576A1

Abstract

The disclosure provides a method and a device for controlling power of a Sounding Reference Signal (SRS), which relate to the technical field of mobile communication, and are provided according to the present embodiment, wherein User Equipment (UE) can receive indication information sent by network equipment, the indication information is used for indicating a power control parameter of the SRS, the SRS is used for performing joint channel estimation by at least two Transmission Receiving Points (TRPs) of related joint transmission, and the at least two TRPs at least contain one service (TRP); and determining the transmitting power of the SRS according to the power control parameter. The present disclosure can ensure that the SRS received by each TRP performing the related joint transmission has enough power, thereby enhancing the performance of joint channel estimation.

Description

Power control method and device for Sounding Reference Signal (SRS)

Technical Field

The disclosure relates to the technical field of mobile communication, and in particular relates to a power control method and device for a Sounding Reference Signal (SRS).

Background

In actual networks, many existing networks may implement related joint transmissions, such as a centralized radio access network (Centralized radio access network, C-RAN) architecture and intra-station cooperation.

In the case of performing correlated joint Transmission for multiple Transmission and Reception Points (TRPs), in order to estimate the joint channel, the multiple TRPs that need to perform correlated joint Transmission can all receive the sounding reference signal (Sounding Reference Signal, SRS) of the same user, and it is desirable that the SRS received by each TRP has enough power to guarantee the performance of channel estimation. However, in the conventional power control, the SRS is independently controlled based on the service TRP, and the influence on other adjacent TRPs is reduced as much as possible, so that the uplink transmission power of the SRS transmitted to the adjacent TRPs is limited, and the adjacent TRPs may not normally receive the SRS, so that the SRS received by the adjacent TRPs cannot be guaranteed to have enough power, and the performance of joint channel estimation cannot be guaranteed.

Disclosure of Invention

The disclosure provides a method and a device for controlling power of Sounding Reference Signals (SRS), which can ensure that SRS received by each TRP performing related joint transmission has enough power, thereby enhancing performance of joint channel estimation.

An embodiment of a first aspect of the present disclosure provides a power control method for a sounding reference signal SRS, the method being applied to a user equipment UE, the method comprising:

Receiving indication information sent by network equipment, wherein the indication information is used for indicating a power control parameter of SRS, the SRS is used for carrying out joint channel estimation on at least two transmission receiving points TRP of related joint transmission, and at least one service TRP is contained in the at least two TRPs;

and determining the transmitting power of the SRS according to the power control parameter.

In some embodiments of the present disclosure, the method further comprises:

and receiving configuration information of SRS resources sent by the network equipment, wherein the configuration information comprises SRS identification, and the SRS identification is used for indicating SRS for joint channel estimation.

In some embodiments of the present disclosure, in response to the power control parameter comprising an open loop power control parameter comprising at least a target received power, a path loss compensation factor, and a path loss estimation reference signal, the receiving the indication information sent by the network device comprises:

receiving first indication information sent by network equipment, wherein the first indication information is at least used for indicating target receiving power, a path loss compensation factor and a path loss estimation reference signal of the SRS;

and determining a path loss estimated value according to the path loss estimated reference signal.

In some embodiments of the disclosure, the determining a path loss estimation value according to the path loss estimation reference signal includes:

and responding to the path loss estimation reference signal to configure a downlink reference signal of the service TRP, and determining a path loss estimation value according to the downlink reference signal of the service TRP.

In some embodiments of the present disclosure, in response to the path loss estimation reference signal being configured as at least two downlink reference signals corresponding to the at least two TRPs, the determining the path loss estimation value according to the path loss estimation reference signal includes:

and determining at least two path loss estimated values corresponding to the at least two TRPs according to the at least two downlink reference signals.

In some embodiments of the present disclosure, in response to the power control parameter comprising a closed loop power control parameter comprising at least a power control adjustment value, the receiving indication information sent by the network device comprises:

and receiving second indication information sent by the network equipment, wherein the second indication information is used for indicating the power control adjustment value of the SRS.

Receiving third indication information sent by network equipment, wherein the third indication information is used for indicating that an uplink physical shared channel adjustment value is adopted to determine the power control adjustment value;

determining at least two uplink physical shared channel adjustment values corresponding to the at least two TRPs in response to the third indication information;

and determining the maximum uplink physical shared channel regulating value in the at least two uplink physical shared channel regulating values as the power control regulating value.

In some embodiments of the disclosure, the determining the SRS transmit power according to the power control parameter includes:

and calculating the transmitting power of the SRS based on a first calculation formula, the target receiving power, the path loss compensation factor and the path loss estimated value.

In some embodiments of the present disclosure, in response to the path loss estimate being at least two path loss estimates corresponding to the at least two TRPs, the calculating the SRS transmit power based on the first calculation formula and the target received power, the path loss compensation factor, the path loss estimate includes:

determining a maximum path loss estimated value in the at least two path loss estimated values, and calculating the transmitting power of the SRS based on a first calculation formula, the target receiving power, the path loss compensation factor and the maximum path loss estimated value; or alternatively, the first and second heat exchangers may be,

And calculating the maximum difference value of the at least two TRPs relative to the path loss estimated value according to the at least two path loss estimated values, and calculating the transmitting power of the SRS based on a first calculation formula after accumulating the maximum difference value, the target receiving power, the path loss compensation factor and the path loss estimated value corresponding to the service TRP.

and calculating the transmitting power of the SRS based on a second calculation formula, the target receiving power, the path loss compensation factor, the path loss estimated value and the power control regulating value.

In some embodiments of the present disclosure, in response to the path loss estimate being at least two multiple path loss estimates corresponding to the at least two TRPs, the calculating the SRS transmit power based on the second calculation formula and the target received power, the path loss compensation factor, the path loss estimate, the power control adjustment value includes:

determining a maximum path loss estimated value in the at least two path loss estimated values, and calculating the transmitting power of the SRS based on a second calculation formula, the target receiving power, the path loss compensation factor, the maximum path loss estimated value and the power control regulating value; or alternatively, the first and second heat exchangers may be,

And calculating the maximum difference value of the at least two TRPs relative to the path loss estimated value according to the at least two path loss estimated values, and calculating the transmitting power of the SRS based on a second calculation formula after accumulating the maximum difference value, the target receiving power, the path loss compensation factor, the path loss estimated value corresponding to the service TRP and the power control regulating value.

In some embodiments of the present disclosure, the method further comprises:

and transmitting the SRS to the at least two TRPs based on the transmission power of the SRS.

A second aspect of the present disclosure provides a power control method of a sounding reference signal SRS, the method being applied to a network device, the method comprising:

and sending indication information for indicating a power control parameter of SRS to User Equipment (UE) so that the UE determines the transmission power of the SRS according to the power control parameter, wherein the SRS is used for carrying out joint channel estimation on at least two Transmission Receiving Points (TRP) of related joint transmission, and at least one service (TRP) is contained in the at least two TRPs.

In some embodiments of the present disclosure, the method further comprises:

and sending configuration information of SRS resources to the UE, wherein the configuration information comprises SRS identification, and the SRS identification is used for indicating SRS to be subjected to joint channel estimation.

In some embodiments of the present disclosure, in response to the power control parameter comprising an open loop power control parameter including at least a target received power, a path loss compensation factor, and a path loss estimation reference signal, the transmitting indication information indicating the power control parameter of the SRS to the user equipment UE comprises:

and sending first indication information to the UE, wherein the first indication information is at least used for indicating the target receiving power of the SRS, the path loss compensation factor and the path loss estimation reference signal so that the UE determines a path loss estimation value according to the path loss estimation reference signal.

In some embodiments of the present disclosure, in response to the power control parameter comprising a closed loop power control parameter comprising at least a power control adjustment value, the transmitting indication information to the user equipment UE indicating the power control parameter of the SRS comprises:

and sending second indication information to the UE, wherein the second indication information is used for indicating a power control adjustment value of the SRS, and the power control adjustment value is determined according to the historical SRS power received by the at least two TRPs.

And sending third indication information to the UE, wherein the third indication information is used for indicating that the uplink physical shared channel adjustment value is adopted to determine the power control adjustment value.

An embodiment of a third aspect of the present disclosure provides a power control apparatus for a sounding reference signal SRS, the apparatus being applied to a user equipment UE, the apparatus comprising:

a receiving module, configured to receive indication information sent by a network device, where the indication information is used to indicate a power control parameter of an SRS, where the SRS is used to perform joint channel estimation by at least two transmission receiving points TRP of a related joint transmission, and the at least two TRP includes at least one service TRP;

and the determining module is used for determining the transmitting power of the SRS according to the power control parameter.

An embodiment of a fourth aspect of the present disclosure provides a power control apparatus for a sounding reference signal SRS, the apparatus being applied to a network device, the apparatus comprising:

and the sending module is used for sending indication information for indicating the power control parameter of the SRS to User Equipment (UE) so that the UE can determine the sending power of the SRS according to the power control parameter, wherein the SRS is used for carrying out joint channel estimation on at least two Transmission Receiving Points (TRP) of related joint transmission, and at least one service (TRP) is contained in the at least two TRPs.

A fifth aspect embodiment of the present disclosure provides a communication device including: a transceiver; a memory; and a processor, respectively connected with the transceiver and the memory, configured to control wireless signal transceiving of the transceiver by executing computer executable instructions on the memory, and capable of realizing the method as the embodiment of the first aspect or the embodiment of the second aspect of the disclosure.

A sixth aspect embodiment of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer-executable instructions; the computer-executable instructions, when executed by a processor, are capable of implementing a method as in the first aspect embodiment or the second aspect embodiment of the present disclosure.

The embodiment of the disclosure provides a method and a device for controlling the power of a Sounding Reference Signal (SRS), which can utilize User Equipment (UE) to receive indication information which is sent by network equipment and is used for indicating the power control parameter of the SRS, and further determine the transmitting power of the SRS for carrying out joint channel estimation according to the power control parameter. By the embodiment of the disclosure, the path loss of a plurality of TRPs for performing related joint transmission can be comprehensively considered in the power control parameter, so that the SRS received by each TRP for performing related joint transmission has enough power, and the accuracy of joint channel estimation is ensured.

Additional aspects and advantages of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.

Drawings

The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a flowchart illustrating a method for controlling power of a sounding reference signal SRS according to an embodiment of the present disclosure;

fig. 2 is a flowchart illustrating a method for controlling power of a sounding reference signal SRS according to an embodiment of the present disclosure;

fig. 3 is a flowchart illustrating a method for controlling power of a sounding reference signal SRS according to an embodiment of the present disclosure;

fig. 4 is a flowchart illustrating a method for controlling power of a sounding reference signal SRS according to an embodiment of the present disclosure;

fig. 5 is a flowchart illustrating a method for controlling power of a sounding reference signal SRS according to an embodiment of the present disclosure;

fig. 6 is a flowchart illustrating a method for controlling power of a sounding reference signal SRS according to an embodiment of the present disclosure;

fig. 7 is a timing diagram of a power control method of a sounding reference signal SRS according to an embodiment of the present disclosure;

fig. 8 is a block diagram of a power control apparatus for sounding reference signals SRS according to an embodiment of the present disclosure;

Fig. 9 is a block diagram of a power control apparatus for sounding reference signals SRS according to an embodiment of the present disclosure;

fig. 10 is a schematic structural view of a communication device according to an embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of a chip according to an embodiment of the disclosure.

Detailed Description

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present disclosure and are not to be construed as limiting the present disclosure.

In actual networks, many existing networks may implement related joint transmissions, such as a centralized radio access network (Centralized radio access network, C-RAN) architecture and intra-station cooperation. In the case of performing correlated joint Transmission for multiple Transmission and Reception Points (TRPs), in order to estimate the joint channel, the multiple TRPs that need to perform correlated joint Transmission can all receive the sounding reference signal (Sounding Reference Signal, SRS) of the same user, and it is desirable that the SRS received by each TRP has enough power to guarantee the performance of channel estimation. However, in the conventional power control, the SRS is independently controlled based on the service TRP, and the influence on other adjacent TRPs is reduced as much as possible, so that the uplink transmission power of the SRS transmitted to the adjacent TRPs is limited, and the adjacent TRPs may not normally receive the SRS, so that the SRS received by each TRP performing the related joint transmission cannot be guaranteed to have enough power, and the performance of joint channel estimation cannot be guaranteed.

Therefore, the disclosure provides a method and a device for controlling the power of a sounding reference signal SRS, which can be mainly aimed at the SRS used for joint channel estimation, so as to ensure that the SRS received by each TRP performing related joint transmission has enough power, thereby enhancing the performance of joint channel estimation.

The following describes in detail a method and an apparatus for controlling power of a sounding reference signal SRS provided in the present application with reference to the accompanying drawings.

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the disclosure. As used in this disclosure of embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.

Fig. 1 illustrates a power control method of a sounding reference signal SRS according to an embodiment of the present disclosure, which is applied to a user equipment UE as shown in fig. 1, and may include the following steps.

Step 101, receiving indication information sent by a network device, where the indication information is used to indicate a power control parameter of an SRS.

Wherein the sounding reference signal (Sounding Reference Signal, SRS) is used for performing joint channel estimation by cooperation of at least two Transmission-Reception points (TRPs) of the related joint Transmission, and at least one service TRP is included in the at least two TRPs. In response to at least one service TRP being included in at least two TRPs, other TRPs may also be included in at least two TRPs, which may be service TRPs or may also be neighboring TRPs, which is not specifically defined in the present disclosure. Accordingly, the network device may be a serving TRP in the base station.

For the embodiments of the present disclosure, in order to enhance performance of joint channel estimation, it is required that other TRPs can receive SRS transmitted by User Equipment (UE) under a serving TRP for joint channel estimation. In order to ensure that the SRS received by each TRP performing the related joint transmission has enough power to ensure the performance of channel estimation, the UE may receive the indication information sent by the network device and used for indicating the power control parameter of the SRS, so as to perform power control based on the power control parameter, and calculate the transmission power of the SRS capable of ensuring that each TRP performing the related joint transmission has the performance of joint channel estimation.

Step 102, determining the transmission power of the SRS according to the power control parameter.

The power control parameters can comprise open loop power control parameters, wherein the open loop power control parameters are static and semi-static parameters, the open loop power control parameters can be indicated by the network equipment according to the self requirements, and the UE can be directly obtained according to indication information sent by the network equipment; the power control parameters may also include closed loop power control parameters, which are parameters that change in real time and may be dynamically regulated by the network device according to uplink transmission of the UE.

For the disclosed embodiments, when determining the SRS transmit power according to the power control parameter, as a possible implementation, when used for joint signal estimation, the closed loop power control is not considered, and only the open loop power control portion is considered. In this regard, the transmit power of the SRS may be determined directly from the open loop power control parameter; as a possible implementation manner, the transmission power of the SRS may be calculated by comprehensively using the open loop power control parameter and the closed loop power control parameter.

In summary, according to the method for controlling the power of the sounding reference signal SRS provided by the embodiments of the present disclosure, the UE may receive, by using the indication information sent by the network device and used for indicating the power control parameter of the SRS, and further may determine the transmit power of the SRS used for performing joint channel estimation according to the power control parameter. By the embodiment of the disclosure, the path loss of a plurality of TRPs for performing related joint transmission can be comprehensively considered in the power control parameter, so that the SRS received by each TRP for performing related joint transmission has enough power, and the accuracy of joint channel estimation is ensured.

Fig. 2 illustrates a power control method of a sounding reference signal SRS according to an embodiment of the present disclosure, which is applied to a user equipment UE, is illustrated based on the embodiment illustrated in fig. 1, as illustrated in fig. 2, and may include the following steps.

Step 201, receiving configuration information of SRS resources sent by a network device, where the configuration information includes an SRS identifier, and the SRS identifier is used to indicate SRS for performing joint channel estimation.

Wherein the SRS identification may include at least an identifier, a newly defined SRS resource or a set of resources.

For the embodiment of the disclosure, in order to enable the UE to identify the SRS to be subjected to joint channel estimation, the network device may send configuration information of SRS resources to the UE, and after receiving the configuration information of the SRS resources, the UE may determine that the UE is the SRS for performing joint channel estimation according to the SRS identifier in the configuration information. As a possible implementation manner, the SRS may be an existing SRS, in which case, to implement multiplexing of the existing SRS and be able to distinguish from a general SRS that is not joint channel estimation, an identifier may be introduced to inform the user that the SRS is used for joint channel estimation; as one possible implementation, the SRS may be a newly introduced SRS dedicated to joint channel estimation, in which case a new SRS name (e.g., SRS-channelestcjtruestoureset) may be redefined for the SRS resource/resource set in order to be able to distinguish between generic SRS that are not joint channel estimation.

Step 202, receiving first indication information sent by the network device in response to the power control parameter including an open loop power control parameter, where the first indication information is at least used to indicate a target received power of the SRS, a path loss compensation factor, and a path loss estimation reference signal.

For the embodiments of the present disclosure, to ensure that the SRS received by each TRP performing the related joint transmission has enough power to ensure the performance of channel estimation, the UE may receive the first indication information sent by the network device to indicate the open loop power control parameter of the SRS. The open loop power control parameter at least comprises target received power, a path loss compensation factor and a path loss estimation reference signal.

Step 203, determining a path loss estimation value according to the path loss estimation reference signal.

For the embodiments of the present disclosure, as one possible implementation, the path loss estimation reference signal may be configured as a downlink reference signal serving the TRP. Accordingly, when determining the path loss estimation value according to the path loss estimation reference signal, the embodiment step 203 may specifically include: in response to the path loss estimation reference signal being configured as a downlink reference signal for the service TRP, a path loss estimation value is determined from the downlink reference signal for the service TRP.

Accordingly, in order to enable the network device to comprehensively consider the path loss difference from each TRP to the UE when determining the target received power and the path loss compensation factor, reporting of the introduced path loss estimation value may be considered, as a possible implementation manner, the embodiment may specifically include: and responding to the path loss estimation reference signal to configure at least two downlink reference signals corresponding to the at least two TRPs, and reporting at least two path loss estimation values determined according to the at least two downlink reference signals to the network equipment so that the network equipment can determine target receiving power and path loss compensation factors based on the at least two path loss estimation values.

For the embodiments of the present disclosure, as one possible implementation manner, the path loss estimation Reference Signal may configure a plurality of downlink Reference Signals (RSs), where each RS is a Reference Signal of a respective TRP. To this end, a plurality of RSs may be configured as one possible implementation of the path loss reference signal in the SRS resource set configuration, and an identifier is introduced to indicate the cell ID to which the reference signal belongs. In this case, the UE needs to additionally maintain N routes, which is determined by the network device according to the user capability. And the UE carries out path loss estimation according to each pathloss RS, and takes the maximum value of the downlink reference signals corresponding to the TRPs as a path loss estimation value. Accordingly, when determining the path loss estimation value according to the path loss estimation reference signal, the embodiment step 203 may specifically include: and responding to the channel loss estimation reference signal to configure at least two downlink reference signals corresponding to the at least two TRPs, and determining at least two channel loss estimation values corresponding to the at least two TRPs according to the at least two downlink reference signals.

Step 204, calculating the SRS transmission power based on the first calculation formula, the target received power, the path loss compensation factor, and the path loss estimation value.

Wherein, the formula feature description of the first calculation formula may be:

in the formula, P is the transmission power of SRS, P _CMAX Maximum uplink transmit power allowed for UE, P ₀ For the target received power, α is a path loss compensation factor, PL is a path loss estimation value, and Δ is other adjustment amount. The target receiving power and the path loss compensation factor can be obtained through the RRC parameter indication of the network equipment, and the path loss estimated value can be obtained through the path loss estimated reference signal estimation indicated by the RRC parameter indication of the network equipment.

For the embodiment of the disclosure, as a possible implementation manner, in response to the path loss estimated value being at least two path loss estimated values corresponding to at least two TRP, the at least two path loss estimated values may be determined correspondingly, and further it may be determined that at least two transmit powers are P1, P2 … PN, and then the final transmit power p=min [ Pcmax, max { P1, P2 … PN }]Equivalently, the estimated path loss value in the calculation formula takes the maximum value max { PL1, PL2, … PLN } of several TRP path losses; or adding max { PL in the first calculation formula _i -PL _j Items, where PL _i Path loss estimation value (PL) for any one TRP of at least two TRPs _j The path loss estimate for the service TRP. Accordingly, the steps of the embodiment may specifically include: determining the maximum path loss estimated value in at least two path loss estimated values, and calculating the transmitting power of SRS based on a first calculation formula, target receiving power, path loss compensation factors and the maximum path loss estimated value; or, calculating the maximum difference value of at least two TRPs relative to the path loss estimated value according to the at least two path loss estimated values, and calculating SRS based on a first calculation formula after accumulating the maximum difference value and the path loss estimated value corresponding to target received power, path loss compensation factor and service TRPIs provided.

Step 205, SRS is transmitted to at least two TRPs based on the SRS transmission power.

For the embodiment of the disclosure, after determining the transmission power of the SRS, the UE may transmit the SRS based on the transmission power of the SRS, and under this transmission power, it may be ensured that the SRS received by each TRP has enough power, so that the performance of joint channel estimation may be enhanced.

In summary, according to the method for controlling power of sounding reference signal SRS provided in the embodiments of the present disclosure, a user equipment UE may receive an SRS to be subjected to joint channel estimation sent by a network device, and first indication information for indicating a power control parameter of the SRS, and further may determine, according to an open loop power control parameter indicated in the first indication information, a transmit power of the SRS to be subjected to joint channel estimation. By the embodiment of the disclosure, the path loss of a plurality of TRPs for performing related joint transmission can be comprehensively considered in the open loop power control parameter, so that the SRS received by each TRP for performing related joint transmission has enough power, and the accuracy of joint channel estimation is ensured.

Fig. 3 illustrates a method for controlling power of a sounding reference signal SRS according to an embodiment of the present disclosure, which is applied to a user equipment UE, is illustrated based on the embodiments illustrated in fig. 1 and 2, as illustrated in fig. 3, and may include the following steps.

Step 301, receiving configuration information of SRS resources sent by a network device, where the configuration information includes an SRS identifier, and the SRS identifier is used to indicate SRS for performing joint channel estimation.

For the embodiment of the present disclosure, the implementation process is the same as that of embodiment step 201, and will not be described herein.

Step 302, receiving first indication information sent by the network device in response to the power control parameter including an open loop power control parameter, where the first indication information is at least used to indicate a target received power of the SRS, a path loss compensation factor, and a path loss estimation reference signal.

The open loop power control parameter at least comprises target received power, a path loss compensation factor and a path loss estimation reference signal.

For the embodiment of the present disclosure, the implementation process is the same as that of embodiment step 202, and will not be described here again.

Step 303, determining a path loss estimation value according to the path loss estimation reference signal.

For the embodiment of the present disclosure, the implementation process is the same as that of embodiment step 203, and will not be described herein.

Step 304a, receiving second indication information sent by the network device in response to the power control parameter including the closed loop power control parameter, where the second indication information is used to indicate a power control adjustment value of the SRS.

Wherein the closed loop power control parameter comprises at least a power control adjustment value.

In a specific application scenario, in response to the power control parameter comprising a closed loop power control parameter, for the case of joint channel estimation, the power control adjustment state (srs-powercontroladjustmentstatesrs) is required to be valued for only a separate closed loop adjustment (separated loop). Based on this, as a possible implementation manner, the power control adjustment value indicated by the network device may be received by performing step 304a of this embodiment. In addition, as another possible implementation manner, the step 304b of the embodiment may be performed, and the third indication information for indicating the independent closed loop power adjustment may be received, that is, the uplink physical shared channel adjustment value may be used to determine the power control adjustment value.

Accordingly, for the embodiment of the present disclosure, a specific power control adjustment value may be determined by the network device according to the SRS condition received by each TRP, after determining the power control adjustment value, the network device may send second indication information for indicating the power control adjustment value of the SRS to the UE, and correspondingly, the UE may directly receive the power control adjustment value sent by the network device.

As an embodiment step 304b in parallel with the embodiment step 304a, receiving, in response to the power control parameter including the closed loop power control parameter, third indication information sent by the network device, where the third indication information is used to indicate that the power control adjustment value is determined using the uplink physical shared channel adjustment value.

For the embodiment of the present disclosure, if at least two transmission receiving points TRP of the related joint transmission also support uplink transmission, based on which the network device indicates to the UE that there are at least two adjustment values of TRP with respect to PUSCH, the power of SRS may default to be equal to the adjustment value of PUSCH of each TRP according to the configuration of the network device, i.e. further the UE may determine the final power control adjustment value according to the adjustment value of PUSCH of each TRP. As a possible implementation manner, the network device may send third indication information for indicating to use the uplink physical shared channel adjustment value to determine the power control adjustment value to the UE, so that the UE determines at least two uplink physical shared channel adjustment values corresponding to the at least two TRPs in response to the third indication information, and determines the at least two uplink physical shared channel adjustment values as the power control adjustment value according to the at least two uplink physical shared channel adjustment values.

Step 305b, in response to the third indication information, determining at least two uplink physical shared channel adjustment values corresponding to the at least two TRPs, and determining a maximum uplink physical shared channel adjustment value of the at least two uplink physical shared channel adjustment values as a power control adjustment value.

For the embodiment of the present disclosure, after determining at least two uplink physical shared channel adjustment values corresponding to at least two TRPs in response to third indication information sent by the network device, the UE may determine the maximum uplink physical shared channel adjustment value of the at least two uplink physical shared channel adjustment values as the final power control adjustment value, i.e. h=f=max { f1, f2, … }.

Step 306, calculating the SRS transmission power based on the second calculation formula, the target received power, the path loss compensation factor, the path loss estimation value, and the power control adjustment value.

Wherein, the formula feature description of the second calculation formula may be:

in the formula, P is the transmission power of SRS, P _CMAX Maximum uplink transmit power allowed for UE，P ₀ For target received power, α is a path loss compensation factor, PL is a path loss estimate, Δ is other adjustment, and h is a power control adjustment, also referred to as a closed loop power control parameter. The target receiving power and the path loss compensation factor can be obtained through the RRC parameter indication of the network equipment, and the path loss estimated value can be obtained through the path loss estimated reference signal estimation indicated by the RRC parameter indication of the network equipment.

For the embodiment of the disclosure, as a possible implementation manner, in response to the path loss estimated value being at least two multiple path loss estimated values corresponding to at least two TRPs, the at least two path loss estimated values may be determined correspondingly, and further, the at least two transmit powers may be determined to be P1, P2 … PN, and then the final transmit power p=min [ Pcmax, max { P1, P2 … PN } ]Equivalently, the estimated path loss value in the calculation formula takes the maximum value max { PL1, PL2, … PLN } of several TRP path losses; or adding max { PL in the second calculation formula _i -PL _j Items, where PL _i Path loss estimation value (PL) for any one TRP of at least two TRPs _j The path loss estimate for the service TRP. Accordingly, the embodiment step 306 may specifically include: determining the maximum path loss estimated value in the at least two path loss estimated values, and calculating the transmitting power of the SRS based on a second calculation formula, the target receiving power, the path loss compensation factor, the maximum path loss estimated value and the power control regulating value; or, calculating the maximum difference value of at least two TRPs relative to the path loss estimated value according to the at least two path loss estimated values, and calculating the transmitting power of the SRS based on a second calculation formula after accumulating the maximum difference value, the target receiving power, the path loss compensation factor, the path loss estimated value corresponding to the service TRP and the power control regulating value.

Step 307, SRS is transmitted to at least two TRPs based on the SRS transmission power.

In summary, according to the method for controlling power of sounding reference signal SRS provided in the embodiments of the present disclosure, the UE may receive the SRS to be subjected to joint channel estimation sent by the network device, and the first indication information, the second indication information, or the third indication information for indicating the power control parameter of the SRS, and may further determine the transmit power of the SRS for performing joint channel estimation according to the open loop power control parameter and the closed loop power control parameter indicated in the first indication information, the second indication information, or the third indication information. By the embodiment of the disclosure, the path loss of a plurality of TRPs for performing related joint transmission can be comprehensively considered in the open loop power control parameter, and the power control adjustment values of the plurality of TRPs for performing related joint transmission are comprehensively considered in the closed loop power control parameter, so that the SRS received by each TRP for performing related joint transmission can be ensured to have enough power, and the accuracy of joint channel estimation is ensured.

Fig. 4 illustrates a power control method of a sounding reference signal SRS according to an embodiment of the present disclosure, which is applied to a network device as shown in fig. 4, and may include the following steps.

Step 401, transmitting indication information indicating a power control parameter of an SRS to a user equipment UE, so that the UE determines a transmission power of the SRS according to the power control parameter, where the SRS is used for performing joint channel estimation with respect to at least two transmission receiving points TRP of joint transmission, and at least one service TRP is included in the at least two TRPs.

Wherein the network device may be a base station, more specifically, the network device may be a service TRP in the base station.

For the embodiments of the present disclosure, in order to enhance performance of joint channel estimation, it is required that other TRPs can receive SRS transmitted by User Equipment (UE) under a serving TRP for joint channel estimation. In order to ensure that the SRS received by each TRP performing the related joint transmission has enough power to ensure the performance of channel estimation, the network device may send indication information for indicating the power control parameter of the SRS to the UE, so that the UE performs power control based on the power control parameter after receiving the indication information, and calculates the transmit power of the SRS capable of ensuring that each TRP performing the related joint transmission has the performance of joint channel estimation.

The power control parameters can comprise open loop power control parameters, wherein the open loop power control parameters are static and semi-static parameters, the open loop power control parameters can be indicated by the network equipment according to the self requirements, and the UE can be directly obtained according to indication information sent by the network equipment; the power control parameters may also include closed loop power control parameters, which are parameters that change in real time and may be dynamically regulated by the network device according to uplink transmission of the UE. Accordingly, the UE determines the SRS transmission power according to the power control parameter, which is described in the embodiment step 102 and will not be described herein.

In summary, according to the method for controlling the power of the sounding reference signal SRS provided by the embodiments of the present disclosure, the network device may be used to send indication information indicating the power control parameter of the SRS to the UE, so that the UE determines the transmit power of the SRS according to the power control parameter. By the embodiment of the disclosure, the path loss of a plurality of TRPs for performing related joint transmission can be comprehensively considered in the power control parameter, so that the SRS received by each TRP for performing related joint transmission has enough power, and the accuracy of joint channel estimation is ensured.

Fig. 5 illustrates a power control method of a sounding reference signal SRS according to an embodiment of the present disclosure, which is applied to a network device, is illustrated based on the embodiment illustrated in fig. 4, as illustrated in fig. 5, and may include the following steps.

Step 501, sending configuration information of SRS resources to the UE, wherein the configuration information comprises SRS identifiers, and the SRS identifiers are used for indicating SRS for joint channel estimation.

For the embodiment of the disclosure, in order to enable the UE to identify the SRS to be subjected to joint channel estimation, the network device may send configuration information of SRS resources to the UE, so that after receiving the configuration information of the SRS resources, the UE may determine that the UE is the SRS for performing joint channel estimation according to the SRS identifier in the configuration information. As a possible implementation manner, the SRS may be an existing SRS, in which case, to implement multiplexing of the existing SRS and be able to distinguish from a general SRS that is not joint channel estimation, an identifier may be introduced to inform the user that the SRS is used for joint channel estimation; as one possible implementation, the SRS may be a newly introduced SRS dedicated to joint channel estimation, in which case a new SRS name (e.g., SRS-ChannelEstCJTResourceSet) may be redefined for the SRS resource/resource set in order to be able to distinguish between generic SRS that are not joint channel estimation.

Step 502, in response to the power control parameter including an open loop power control parameter, transmitting first indication information to the UE, where the first indication information is at least used to indicate the target received power of the SRS, the path loss compensation factor, and the path loss estimation reference signal, so that the UE determines the path loss estimation value according to the path loss estimation reference signal.

For the disclosed embodiments, in determining the open loop power control parameters, the existing protocol is determined based only on the existing channel conditions and traffic requirements of the service TRP. In order to ensure that the SRS received by each TRP for the associated joint transmission has sufficient power to ensure the performance of channel estimation, in the present disclosure, the channel condition and traffic requirements of each TRP may be considered to comprehensively select the appropriate open loop power control parameters. Further, the network device may send first indication information indicating the open loop power control parameter to the UE. The open loop power control parameter at least comprises target received power, a path loss compensation factor and a path loss estimation reference signal.

In a specific application scenario, after receiving first indication information sent by the network device and indicating that there is an open loop power control parameter, the UE may determine a path loss estimation value according to a path loss estimation reference signal in the open loop power control parameter, and further, may substitute the target received power in the open loop power control parameter, the path loss compensation factor, and the calculated path loss estimation value into a first calculation formula to calculate and obtain the SRS transmission power. The specific implementation process may be referred to the relevant descriptions in the embodiment steps 203 and 204, and will not be repeated here.

Step 503, receiving at least two path loss estimated values reported by the UE, and determining a target receiving power and a path loss compensation factor based on the at least two path loss estimated values.

For the embodiment of the disclosure, in order to enable the network device to comprehensively consider the path loss difference from each TRP to the UE when determining the target received power and the path loss compensation factor, the reporting of the introduced path loss estimation value may be considered. That is, in response to the path loss estimation reference signal being configured as at least two downlink reference signals corresponding to at least two TRPs, the UE reports at least two path loss estimation values determined according to the at least two downlink reference signals to the network device, and the network device may determine the target received power and the path loss compensation factor based on the at least two path loss estimation values after receiving the at least two path loss estimation values reported by the UE.

In summary, according to the method for controlling the power of the sounding reference signal SRS provided by the embodiments of the present disclosure, the network device may be used to send the SRS to be subjected to joint channel estimation to the UE, and first indication information for indicating the power control parameter of the SRS, so that the UE may further determine the transmit power of the SRS for performing joint channel estimation according to the open loop power control parameter indicated in the first indication information. By the embodiment of the disclosure, the path loss of a plurality of TRPs for performing related joint transmission can be comprehensively considered in the open loop power control parameter, so that the SRS received by each TRP for performing related joint transmission has enough power, and the accuracy of joint channel estimation is ensured.

Fig. 6 illustrates a power control method of a sounding reference signal SRS according to an embodiment of the present disclosure, which is applied toNetwork equipmentThe UE, based on the embodiments shown in fig. 4 and 5, is shown in fig. 6, and may include the following steps.

Step 601, sending configuration information of SRS resources to the UE, wherein the configuration information comprises SRS identifiers, and the SRS identifiers are used for indicating SRS for joint channel estimation.

For the embodiment of the present disclosure, the implementation process is the same as that of embodiment step 501, and will not be described herein.

Step 602, in response to the power control parameter including an open loop power control parameter, transmitting first indication information to the UE, where the first indication information is at least used to indicate the target received power of the SRS, the path loss compensation factor, and the path loss estimation reference signal, so that the UE determines the path loss estimation value according to the path loss estimation reference signal.

For the embodiment of the present disclosure, the implementation process is the same as that of embodiment step 502, and will not be described herein.

Step 603a, in response to the power control parameter comprising a closed loop power control parameter, sends second indication information to the UE, the second indication information being used to indicate a power control adjustment value of the SRS, wherein the power control adjustment value is determined according to historical SRS power received by at least two TRPs.

In a specific application scenario, in response to the power control parameter comprising a closed loop power control parameter, for the case of joint channel estimation, the power control adjustment state (srs-powercontroladjustmentstatesrs) is required to be valued for only a separate closed loop adjustment (separated loop). Based on this, as a possible implementation, the power control adjustment value may be sent to the user equipment UE by performing step 603a of this embodiment. Further, as another possible implementation manner, the third indication information for indicating the independent closed loop power adjustment may be sent to the user equipment UE by performing the following embodiment step 603b, even though the UE may determine the power control adjustment value using the uplink physical shared channel adjustment value.

Accordingly, for the embodiment of the present disclosure, a specific power control adjustment value may be determined by the network device according to the SRS condition received by each TRP, and after determining the power control adjustment value, the network device may directly send second indication information for indicating the power control adjustment value of the SRS to the UE.

An embodiment step 603b corresponding to the embodiment step 603a, in response to the power control parameter including the closed loop power control parameter, sends third indication information to the UE, where the third indication information is used to indicate that the power control adjustment value is determined by using the uplink physical shared channel adjustment value.

For the embodiments of the present disclosure, if at least two transmission receiving points TRP of the related joint transmission also support uplink transmission, based on which the network device may indicate to the UE that there are at least two adjustment values of TRP with respect to PUSCH, the power of SRS may default to be equal to the adjustment value of PUSCH of each TRP according to the configuration of the network device, i.e. further the UE may determine the final power control adjustment value according to the adjustment value of PUSCH of each TRP. As a possible implementation manner, the network device may send third indication information for indicating to use the uplink physical shared channel adjustment value to determine the power control adjustment value to the UE, so that the UE determines at least two uplink physical shared channel adjustment values corresponding to the at least two TRPs in response to the third indication information, and determines the at least two uplink physical shared channel adjustment values as the power control adjustment value according to the at least two uplink physical shared channel adjustment values. The specific implementation process of determining at least two uplink physical shared channel adjustment values corresponding to at least two TRPs by the UE in response to the third indication information and determining the at least two uplink physical shared channel adjustment values as the power control adjustment values according to the at least two uplink physical shared channel adjustment values may be referred to the related description in step 305b of the embodiment, which is not repeated herein.

In a specific application scenario, after receiving first indication information indicating that there is an open loop power control parameter, second indication information indicating that there is a closed loop power control parameter, or third indication information sent by a network device, the UE may determine a path loss estimated value according to a path loss estimation reference signal in the open loop power control parameter, and further, may substitute a target received power in the open loop power control parameter, a path loss compensation factor, the calculated path loss estimated value, and a power control adjustment value in the closed loop power control parameter into a second calculation formula to calculate to obtain the SRS transmission power. The specific implementation process may be referred to the relevant descriptions in the embodiment steps 303 to 306, and will not be repeated here.

In summary, according to the method for controlling the power of the sounding reference signal SRS provided by the embodiments of the present disclosure, the network device may be used to send the SRS to be subjected to joint channel estimation and the first indication information, the second indication information or the third indication information for indicating the power control parameter of the SRS to the UE, so that the UE may further determine the transmit power of the SRS for performing joint channel estimation according to the open loop power control parameter and the closed loop power control parameter indicated in the first indication information, the second indication information or the third indication information. By the embodiment of the disclosure, the path loss of a plurality of TRPs for performing related joint transmission can be comprehensively considered in the open loop power control parameter, and the power control adjustment values of the plurality of TRPs for performing related joint transmission are comprehensively considered in the closed loop power control parameter, so that the SRS received by each TRP for performing related joint transmission can be ensured to have enough power, and the accuracy of joint channel estimation is ensured.

Fig. 7 is a timing diagram of a power control method of a sounding reference signal SRS according to an embodiment of the present disclosure. The method is applied to a power control system of a sounding reference signal SRS, and the system comprises: user Equipment (UE) and network equipment, wherein the network equipment sends indication information for indicating the power control parameters of the SRS to the User Equipment (UE); the UE determines the transmission power of the SRS according to the power control parameter; the user equipment UE transmits the SRS to the plurality of TRPs based on the SRS transmission power.

Referring to fig. 7, the method includes the following steps.

In step 701, the network device sends configuration information of SRS resources to the user equipment UE.

The configuration information includes an SRS identification, which is used to indicate an SRS for joint channel estimation, and the SRS identification may include at least an identifier, a newly defined SRS resource, or a resource set.

Step 702, the network device sends indication information indicating a power control parameter of the SRS to the user equipment UE.

The power control parameters may include open loop power control parameters, where the open loop power control parameters may include at least a target received power of the SRS, a path loss compensation factor, and a path loss estimation reference signal, and the open loop power control parameters are static and semi-static parameters, and may be indicated by the network device according to self requirements, and the UE may directly obtain according to indication information sent by the network device; the power control parameters may further include closed loop power control parameters, where the closed loop power control parameters include at least a power control adjustment value, and the closed loop power control parameters may specifically be parameters that change in real time, and may be dynamically adjusted and controlled by the network device according to uplink transmission of the UE. In response to the power control parameters including open loop power control parameters, the network device may send first indication information to the user equipment UE indicating the open loop power control parameters; the network device may send second indication information indicating the power control adjustment value to the user equipment UE in response to the power control parameter comprising a closed loop power control parameter, or may send third indication information indicating that the power control adjustment value is determined using the uplink physical shared channel adjustment value to the user equipment UE in response to the power control parameter comprising a closed loop power control parameter.

In step 703, the UE determines the SRS transmission power according to the power control parameter.

For the embodiment of the disclosure, when determining the SRS transmission power according to the power control parameter, the UE uses the power control of SRS for positioning as a possible implementation manner, and when used for joint signal estimation, the UE does not consider closed-loop power control and only considers the open-loop power control portion. In this regard, the transmit power of the SRS may be determined directly from the open loop power control parameter; as a possible implementation manner, the transmission power of the SRS may be calculated by comprehensively using the open loop power control parameter and the closed loop power control parameter.

Correspondingly, when the UE determines the transmission power of the SRS directly according to the open loop power control parameter, after receiving the first indication information sent by the network device and indicating that the open loop power control parameter exists, the UE may determine a path loss estimation value according to a path loss estimation reference signal in the open loop power control parameter, and further, may substitute the target reception power and the path loss compensation factor in the open loop power control parameter, and the calculated path loss estimation value into the first calculation formula, to calculate and obtain the transmission power of the SRS. The specific implementation process may be referred to the relevant descriptions in the embodiment steps 203 and 204, and will not be repeated here.

Correspondingly, when the UE calculates the SRS transmission power by comprehensively utilizing the open loop power control parameter and the closed loop power control parameter, after receiving the first indication information indicating that the open loop power control parameter is available, the second indication information indicating that the closed loop power control parameter is available, or the third indication information sent by the network device, the UE may determine a path loss estimated value according to the path loss estimation reference signal in the open loop power control parameter, and further, may substitute the target received power, the path loss compensation factor, the calculated path loss estimated value in the open loop power control parameter, and the power control adjustment value in the closed loop power control parameter into the second calculation formula to calculate the SRS transmission power. The specific implementation process may be referred to the relevant descriptions in the embodiment steps 303 to 306, and will not be repeated here.

Step 704, the UE transmits SRS to at least two TRPs based on the SRS transmission power.

Wherein at least one service TRP is included in at least two TRPs. In response to at least one service TRP being included in at least two TRPs, other TRPs may also be included in at least two TRPs, which may be service TRPs or may also be neighboring TRPs, which is not specifically defined in the present disclosure.

By applying the power control method of the sounding reference signal SRS provided by the embodiment, the path loss of a plurality of TRPs for performing related joint transmission can be comprehensively considered in the open loop power control parameter, and the power control adjustment value of a plurality of TRPs for performing related joint transmission can be comprehensively considered in the closed loop power control parameter, so that the SRS received by each TRP for performing related joint transmission can be ensured to have enough power, and the accuracy of joint channel estimation can be ensured.

In the embodiments provided in the present application, the methods provided in the embodiments of the present application are described from the perspective of the user equipment UE and the network equipment, respectively. In order to implement the functions in the methods provided in the embodiments of the present application, the user equipment UE and the network device may include hardware structures, software modules, and implement the functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Some of the functions described above may be implemented in a hardware structure, a software module, or a combination of a hardware structure and a software module.

The present disclosure also provides a power control device for a sounding reference signal SRS, corresponding to the power control method for a sounding reference signal SRS provided in the foregoing embodiments, and since the power control device for a sounding reference signal SRS provided in the embodiment of the present disclosure corresponds to the power control method for a sounding reference signal SRS provided in the foregoing embodiments, implementation of the power control method for a sounding reference signal SRS is also applicable to the power control device for a sounding reference signal SRS provided in the present embodiment, which is not described in detail in the present embodiment.

Fig. 8 is a schematic structural diagram of a power control apparatus 800 for a sounding reference signal SRS according to an embodiment of the present disclosure, where the power control apparatus 800 for a sounding reference signal SRS may be used for a user equipment UE.

As shown in fig. 8, the apparatus 800 may include:

a receiving module 810, configured to receive indication information sent by a network device, where the indication information is used to indicate a power control parameter of an SRS, where the SRS is used to perform joint channel estimation with respect to at least two transmission receiving points TRP of joint transmission, and at least one service TRP is included in the at least two TRP;

a determining module 820, configured to determine the SRS transmission power according to the power control parameter.

In some embodiments of the present disclosure, the receiving module 810 may be further configured to receive configuration information of SRS resources sent by a network device, where the configuration information includes an SRS identifier, and the SRS identifier is used to indicate an SRS to be subjected to joint channel estimation.

In some embodiments of the present disclosure, in response to the power control parameter comprising an open loop power control parameter, the open loop power control parameter comprising at least a target received power, a path loss compensation factor, and a path loss estimation reference signal, the receiving module 810 is operable to receive first indication information sent by the network device, the first indication information being at least used to indicate the target received power, the path loss compensation factor, and the path loss estimation reference signal of the SRS; and determining a path loss estimation value according to the path loss estimation reference signal.

In some embodiments of the present disclosure, the receiving module 810 may be configured to determine the path loss estimation value according to a downlink reference signal of the service TRP in response to the path loss estimation reference signal being configured as the downlink reference signal of the service TRP.

In some embodiments of the present disclosure, in response to the path loss estimation reference signal being configured as at least two downlink reference signals corresponding to at least two TRPs, the receiving module 810 may be configured to determine at least two path loss estimation values corresponding to at least two TRPs according to the at least two downlink reference signals.

In some embodiments of the present disclosure, in response to the power control parameter comprising a closed loop power control parameter comprising at least a power control adjustment value, the receiving module 810 is operable to receive second indication information sent by the network device, the second indication information being operable to indicate the power control adjustment value of the SRS.

In some embodiments of the present disclosure, in response to the power control parameter including a closed loop power control parameter, the closed loop power control parameter including at least a power control adjustment value, the receiving module 810 is configured to receive third indication information sent by the network device, where the third indication information is used to indicate that the power control adjustment value is determined using the uplink physical shared channel adjustment value; responding to the third indication information, and determining at least two uplink physical shared channel adjustment values corresponding to at least two TRPs; and determining the maximum uplink physical shared channel regulating value in the at least two uplink physical shared channel regulating values as a power control regulating value.

In some embodiments of the present disclosure, the determining module 820 may be configured to calculate the SRS transmission power based on the first calculation formula and the target received power, the path loss compensation factor, and the path loss estimation value.

In some embodiments of the present disclosure, in response to the path loss estimate being at least two path loss estimates corresponding to at least two TRPs, a determining module 820 operable to determine a maximum path loss estimate of the at least two path loss estimates, calculate a transmit power of the SRS based on the first calculation formula and the target received power, the path loss compensation factor, the maximum path loss estimate; or, calculating the maximum difference value of at least two TRPs relative to the path loss estimated value according to the at least two path loss estimated values, and calculating the SRS transmitting power based on a first calculation formula after accumulating the maximum difference value and the path loss estimated value corresponding to the target receiving power, the path loss compensation factor and the service TRP.

In some embodiments of the present disclosure, the determining module 820 may be configured to calculate the SRS transmission power based on the second calculation formula and the target received power, the path loss compensation factor, the path loss estimation value, the power control adjustment value.

In some embodiments of the present disclosure, in response to the path loss estimate being at least two multiple path loss estimates corresponding to at least two TRPs, the determining module 820 is operable to determine a maximum path loss estimate of the at least two path loss estimates, calculate a transmit power of the SRS based on the second calculation formula and the target received power, the path loss compensation factor, the maximum path loss estimate, the power control adjustment value; or, calculating the maximum difference value of at least two TRPs relative to the path loss estimated value according to the at least two path loss estimated values, and calculating the transmitting power of the SRS based on a second calculation formula after accumulating the maximum difference value, the target receiving power, the path loss compensation factor, the path loss estimated value corresponding to the service TRP and the power control regulating value.

In some embodiments of the present disclosure, as shown in fig. 8, the apparatus 800 further comprises: a transmitting module 830;

a transmitting module 830, configured to transmit the SRS to at least two TRPs based on the SRS transmission power.

Fig. 9 is a schematic structural diagram of a power control apparatus 900 for sounding reference signal SRS according to an embodiment of the present disclosure. The power control apparatus 900 for the sounding reference signal SRS may be applied to a network device.

As shown in fig. 9, the apparatus 900 may include:

the sending module 910 is configured to send indication information indicating a power control parameter of an SRS to a user equipment UE, so that the UE determines a transmission power of the SRS according to the power control parameter, where the SRS is used for performing joint channel estimation at least two transmission receiving points TRP of related joint transmission, and at least one service TRP is included in the at least two TRPs.

In some embodiments of the present disclosure, the sending module 910 may be configured to send configuration information of SRS resources to a UE, where the configuration information includes an SRS identifier, where the SRS identifier is used to indicate an SRS to be subjected to joint channel estimation.

In some embodiments of the present disclosure, in response to the power control parameter comprising an open loop power control parameter comprising at least a target received power, a path loss compensation factor, and a path loss estimation reference signal, the transmitting module 910 is configured to transmit first indication information to the UE, where the first indication information is at least used to indicate the target received power, the path loss compensation factor, and the path loss estimation reference signal of the SRS, so that the UE determines the path loss estimation value according to the path loss estimation reference signal.

In some embodiments of the present disclosure, in response to the power control parameter comprising a closed loop power control parameter comprising at least a power control adjustment value, the transmitting module 910 is operable to transmit second indication information to the UE, the second indication information being operable to indicate a power control adjustment value for the SRS, wherein the power control adjustment value is determined based on historical SRS power received by the at least two TRPs.

In some embodiments of the present disclosure, in response to the power control parameter comprising a closed loop power control parameter comprising at least a power control adjustment value, the sending module 910 is configured to send third indication information to the UE, where the third indication information is used to indicate that the power control adjustment value is determined using the uplink physical shared channel adjustment value.

Referring to fig. 10, fig. 10 is a schematic structural diagram of a communication device 1000 according to an embodiment of the present application. The communication apparatus 1000 may be a network device, a user device, a chip system, a processor, or the like that supports the network device to implement the above method, or a chip, a chip system, a processor, or the like that supports the user device to implement the above method. The device can be used for realizing the method described in the method embodiment, and can be particularly referred to the description in the method embodiment.

The communications device 1000 may include one or more processors 1001. The processor 1001 may be a general purpose processor or a special purpose processor, or the like. For example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminal equipment chips, DUs or CUs, etc.), execute computer programs, and process data of the computer programs.

Optionally, the communication device 1000 may further include one or more memories 1002, on which a computer program 1004 may be stored, and the processor 1001 executes the computer program 1004, so that the communication device 1000 performs the method described in the above method embodiments. Optionally, the memory 1002 may also have data stored therein. The communication device 1000 and the memory 1002 may be provided separately or may be integrated.

Optionally, the communication device 1000 may further comprise a transceiver 1005, an antenna 1006. The transceiver 1005 may be referred to as a transceiver unit, a transceiver circuit, or the like, for implementing a transceiver function. The transceiver 1005 may include a receiver, which may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function, and a transmitter; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

Optionally, one or more interface circuits 1007 may also be included in the communications apparatus 1000. The interface circuit 1007 is used to receive code instructions and transmit them to the processor 1001. The processor 1001 executes code instructions to cause the communication device 1000 to perform the method described in the method embodiments described above.

In one implementation, a transceiver for implementing the receive and transmit functions may be included in the processor 1001. For example, the transceiver may be a transceiver circuit, or an interface circuit. The transceiver circuitry, interface or interface circuitry for implementing the receive and transmit functions may be separate or may be integrated. The transceiver circuit, interface or interface circuit may be used for reading and writing codes/data, or the transceiver circuit, interface or interface circuit may be used for transmitting or transferring signals.

In one implementation, the processor 1001 may store a computer program 1003, where the computer program 1003 runs on the processor 1001, and may cause the communication device 1000 to execute the method described in the above method embodiment. The computer program 1003 may be solidified in the processor 1001, in which case the processor 1001 may be implemented by hardware.

In one implementation, the communications apparatus 1000 can include circuitry that can implement the functions of transmitting or receiving or communicating in the foregoing method embodiments. The processors and transceivers described herein may be implemented on integrated circuits (integrated circuit, ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (application specific integrated circuit, ASIC), printed circuit boards (printed circuit board, PCB), electronic devices, and the like. The processor and transceiver may also be fabricated using a variety of IC process technologies such as complementary metal oxide semiconductor (complementary metal oxide semiconductor, CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication apparatus described in the above embodiment may be a network device or a user device, but the scope of the communication apparatus described in the present application is not limited thereto, and the structure of the communication apparatus may not be limited by fig. 10. The communication means may be a stand-alone device or may be part of a larger device. For example, the communication device may be:

(1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem;

(2) A set of one or more ICs, optionally including storage means for storing data, a computer program;

(3) An ASIC, such as a Modem (Modem);

(4) Modules that may be embedded within other devices;

(5) A receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligent device, and the like;

(6) Others, and so on.

For the case where the communication device may be a chip or a chip system, reference may be made to the schematic structural diagram of the chip shown in fig. 11. The chip shown in fig. 11 includes a processor 1101 and an interface 1102. Wherein the number of processors 1101 may be one or more, and the number of interfaces 1102 may be a plurality.

Optionally, the chip further comprises a memory 1103, the memory 1103 being used for storing the necessary computer programs and data.

Those of skill would further appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments herein may be implemented as electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Those skilled in the art may implement the functionality in a variety of ways for each particular application, but such implementation should not be understood to be beyond the scope of the embodiments of the present application.

The present application also provides a readable storage medium having instructions stored thereon which, when executed by a computer, perform the functions of any of the method embodiments described above.

The present application also provides a computer program product which, when executed by a computer, implements the functions of any of the method embodiments described above.

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 comprises one or more computer programs. When the computer program is loaded and executed on a computer, the flow or functions according to embodiments of the present application are fully or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer program may be stored in or transmitted from one computer readable storage medium to another, for example, a website, computer, server, or data center via a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) connection. Computer readable storage media can be any available media that can be accessed by a computer or data storage devices, such as servers, data centers, etc., that contain an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

Those of ordinary skill in the art will appreciate that: the first, second, etc. numbers referred to in this application are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application, but also to indicate the sequence.

At least one of the present application may also be described as one or more, and a plurality may be two, three, four or more, and the present application is not limited thereto. In the embodiment of the present application, for a technical feature, the technical features of the technical feature are distinguished by "first", "second", "third", "a", "B", "C", and "D", and the technical features described by "first", "second", "third", "a", "B", "C", and "D" are not in sequence or in order of magnitude.

As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and/or device (e.g., magnetic discs, optical disks, memory, programmable Logic Devices (PLDs)) used to provide machine instructions and/or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal used to provide machine instructions and/or data to a programmable processor.

The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), and the internet.

The computer system may include a client and a server. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other.

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps recited in the present disclosure may be performed in parallel, sequentially, or in a different order, provided that the desired results of the disclosed aspects are achieved, and are not limited herein.

Furthermore, it is to be understood that the various embodiments of the application may be practiced alone or in combination with other embodiments where the schemes allow.

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.

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 or 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

A method for controlling power of a sounding reference signal SRS, wherein the method is applied to a user equipment UE, the method comprising:

receiving indication information sent by network equipment, wherein the indication information is used for indicating a power control parameter of SRS, the SRS is used for carrying out joint channel estimation on at least two transmission receiving points TRP of related joint transmission, and at least one service TRP is contained in the at least two TRPs;

and determining the transmitting power of the SRS according to the power control parameter.
The method according to claim 1, wherein the method further comprises:

and receiving configuration information of SRS resources sent by the network equipment, wherein the configuration information comprises SRS identification, and the SRS identification is used for indicating SRS for joint channel estimation.
The method of claim 1, wherein the receiving the indication information sent by the network device in response to the power control parameter comprising an open loop power control parameter comprising at least a target received power, a path loss compensation factor, and a path loss estimation reference signal comprises:

receiving first indication information sent by network equipment, wherein the first indication information is at least used for indicating target receiving power, a path loss compensation factor and a path loss estimation reference signal of the SRS;

And determining a path loss estimated value according to the path loss estimated reference signal.
The method of claim 3, wherein said determining a path loss estimate from said path loss estimation reference signal comprises:

and responding to the path loss estimation reference signal to configure a downlink reference signal of the service TRP, and determining a path loss estimation value according to the downlink reference signal of the service TRP.
The method of claim 3, wherein the determining the path loss estimate from the path loss estimation reference signal in response to the path loss estimation reference signal being configured as at least two downlink reference signals corresponding to the at least two TRPs comprises:

and determining at least two path loss estimated values corresponding to the at least two TRPs according to the at least two downlink reference signals.
The method of claim 1, wherein in response to the power control parameter comprising a closed loop power control parameter comprising at least a power control adjustment value, the receiving indication information sent by a network device comprises:

and receiving second indication information sent by the network equipment, wherein the second indication information is used for indicating the power control adjustment value of the SRS.
The method of claim 1, wherein in response to the power control parameter comprising a closed loop power control parameter comprising at least a power control adjustment value, the receiving indication information sent by a network device comprises:

receiving third indication information sent by network equipment, wherein the third indication information is used for indicating that an uplink physical shared channel adjustment value is adopted to determine the power control adjustment value;

determining at least two uplink physical shared channel adjustment values corresponding to the at least two TRPs in response to the third indication information;

and determining the maximum uplink physical shared channel regulating value in the at least two uplink physical shared channel regulating values as the power control regulating value.
The method according to any one of claims 3 to 5, wherein said determining the transmit power of the SRS according to the power control parameter comprises:

and calculating the transmitting power of the SRS based on a first calculation formula, the target receiving power, the path loss compensation factor and the path loss estimated value.
The method of claim 8, wherein the calculating the SRS transmit power based on the first calculation formula and the target received power, the path loss compensation factor, the path loss estimate in response to the path loss estimate being at least two path loss estimates corresponding to the at least two TRPs comprises:

Determining a maximum path loss estimated value in the at least two path loss estimated values, and calculating the transmitting power of the SRS based on a first calculation formula, the target receiving power, the path loss compensation factor and the maximum path loss estimated value; or alternatively, the first and second heat exchangers may be,

and calculating the maximum difference value of the at least two TRPs relative to the path loss estimated value according to the at least two path loss estimated values, and calculating the transmitting power of the SRS based on a first calculation formula after accumulating the maximum difference value, the target receiving power, the path loss compensation factor and the path loss estimated value corresponding to the service TRP.
The method according to any one of claims 3 to 7, wherein said determining the transmit power of the SRS according to the power control parameter comprises:

and calculating the transmitting power of the SRS based on a second calculation formula, the target receiving power, the path loss compensation factor, the path loss estimated value and the power control regulating value.
The method of claim 10, wherein the calculating the SRS transmit power based on the second calculation formula and the target received power, the path loss compensation factor, the path loss estimate, the power control adjustment value in response to the path loss estimate being at least two of the plurality of path loss estimates corresponding to the at least two TRPs comprises:

Determining a maximum path loss estimated value in the at least two path loss estimated values, and calculating the transmitting power of the SRS based on a second calculation formula, the target receiving power, the path loss compensation factor, the maximum path loss estimated value and the power control regulating value; or alternatively, the first and second heat exchangers may be,

and calculating the maximum difference value of the at least two TRPs relative to the path loss estimated value according to the at least two path loss estimated values, and calculating the transmitting power of the SRS based on a second calculation formula after accumulating the maximum difference value, the target receiving power, the path loss compensation factor, the path loss estimated value corresponding to the service TRP and the power control regulating value.
The method according to claim 1, wherein the method further comprises:

and transmitting the SRS to the at least two TRPs based on the transmission power of the SRS.
A method for controlling power of a sounding reference signal SRS, wherein the method is applied to a network device, the method comprising:

and sending indication information for indicating a power control parameter of SRS to User Equipment (UE) so that the UE determines the transmission power of the SRS according to the power control parameter, wherein the SRS is used for carrying out joint channel estimation on at least two Transmission Receiving Points (TRP) of related joint transmission, and at least one service (TRP) is contained in the at least two TRPs.
The method of claim 13, wherein the method further comprises:

and sending configuration information of SRS resources to the UE, wherein the configuration information comprises SRS identification, and the SRS identification is used for indicating SRS to be subjected to joint channel estimation.
The method of claim 13, wherein the transmitting indication information indicating the power control parameters of the SRS to the user equipment UE in response to the power control parameters comprising open loop power control parameters including at least a target received power, a path loss compensation factor, and a path loss estimation reference signal comprises:

and sending first indication information to the UE, wherein the first indication information is at least used for indicating the target receiving power of the SRS, the path loss compensation factor and the path loss estimation reference signal so that the UE determines a path loss estimation value according to the path loss estimation reference signal.
The method of claim 13, wherein the transmitting, in response to the power control parameter comprising a closed loop power control parameter comprising at least a power control adjustment value, indication information indicating a power control parameter of an SRS to a user equipment UE comprises:

And sending second indication information to the UE, wherein the second indication information is used for indicating a power control adjustment value of the SRS, and the power control adjustment value is determined according to the historical SRS power received by the at least two TRPs.
The method of claim 13, wherein the transmitting, in response to the power control parameter comprising a closed loop power control parameter comprising at least a power control adjustment value, indication information indicating a power control parameter of an SRS to a user equipment UE comprises:

and sending third indication information to the UE, wherein the third indication information is used for indicating that the uplink physical shared channel adjustment value is adopted to determine the power control adjustment value.
A power control apparatus for sounding reference signals SRS, wherein the apparatus is applied to a user equipment UE, the apparatus comprising:

a receiving module, configured to receive indication information sent by a network device, where the indication information is used to indicate a power control parameter of an SRS, where the SRS is used to perform joint channel estimation by at least two transmission receiving points TRP of a related joint transmission, and the at least two TRP includes at least one service TRP;

And the determining module is used for determining the transmitting power of the SRS according to the power control parameter.
A power control apparatus for sounding reference signals SRS, the apparatus being applied to a network device, the apparatus comprising:

and the sending module is used for sending indication information for indicating the power control parameter of the SRS to User Equipment (UE) so that the UE can determine the sending power of the SRS according to the power control parameter, wherein the SRS is used for carrying out joint channel estimation on at least two Transmission Receiving Points (TRP) of related joint transmission, and at least one service (TRP) is contained in the at least two TRPs.
A communication device, comprising: a transceiver; a memory; a processor, coupled to the transceiver and the memory, respectively, configured to control wireless signal transceiving of the transceiver and to enable the method of any one of claims 1-17 by executing computer-executable instructions on the memory.
A computer storage medium, wherein the computer storage medium stores computer-executable instructions; the computer executable instructions, when executed by a processor, are capable of implementing the method of any one of claims 1-17.