CN116113023A

CN116113023A - Power control method, device, related equipment and storage medium

Info

Publication number: CN116113023A
Application number: CN202111334138.1A
Authority: CN
Inventors: 郑毅; 左君; 曹昱华; 李岩; 王飞
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2023-05-12

Abstract

The application discloses a power control method, a device, a terminal, a node and a storage medium. The method comprises the following steps: the terminal receives first information, wherein the first information is used for determining the sending power facing to a first node by the terminal, and the first node is used for uplink receiving.

Description

Power control method, device, related equipment and storage medium

Technical Field

The present disclosure relates to the field of wireless communications, and in particular, to a power control method, apparatus, related devices, and storage medium.

Background

In a communication network, as shown in fig. 1, a conventional network deployment manner is that a base station performs uplink and downlink communication with User Equipment (UE); however, the uplink transmit power of the UE is limited, thus resulting in limited coverage of uplink traffic, especially FR2, i.e. a network of millimeter waves. For the scenario with limited uplink coverage, especially the scenario of FR2, as shown in fig. 2, a node (which may be called RX only) that can only receive uplink is introduced. For the node of RX only, the cost of the device can be reduced to some extent because there is no power amplifier and the radio frequency structure of the transmitting end. On the other hand, the node of Rx only is connected with the base station by adopting optical fibers, so that the node of Rx only can be efficiently transmitted with the base station; the node of Rx only can pull up the distance between UE and receiving node to reduce propagation loss, reduce the transmitting power of terminal, make the terminal can carry out uplink service transmission with lower power, thus can adopt bigger working bandwidth, and then make the uplink speed of UE not limited by power, can obtain promotion by a wide margin.

However, in the related art, there is no effective solution for how to control the uplink transmission power of the Rx only oriented node.

Disclosure of Invention

In order to solve the related technical problems, embodiments of the present application provide a power control method, a device, a related apparatus, and a storage medium.

The technical scheme of the embodiment of the application is realized as follows:

the power control method provided by the embodiment of the application is applied to a terminal and comprises the following steps:

and receiving first information, wherein the first information is used for determining the transmitting power facing to a first node by the terminal, and the first node is used for uplink receiving.

In the above scheme, the first node is only used for uplink reception or not downlink transmission with the terminal.

In the above scheme, the method further comprises:

receiving second information, wherein the second information at least indicates to transmit at least one reference signal carried on a corresponding resource, and the transmitted at least one reference signal is used for uplink detection;

and transmitting at least one reference signal indicated by the second information.

In the above scheme, before receiving the second information, the method further includes:

receiving third information, wherein the third information indicates beam management;

And transmitting a reference signal based on the third information.

In the above solution, the second information further indicates a transmission power of the at least one reference signal;

determining a transmit power of the at least one reference signal using the second information;

and transmitting the at least one reference signal by using the transmission power of the at least one reference signal.

In the above scheme, the second information implicitly indicates the transmission power of the at least one reference signal, and determines that the at least one reference signal adopts the maximum transmission power or the predefined transmission power;

or,

the second information indicates a specific transmit power and determines that the at least one reference signal employs the indicated specific transmit power.

In the above scheme, the first information indicates a path loss (PL, pathLoss) associated with the reference signal;

and determining the transmission power facing the first node by using the first information.

In the above scheme, the first information indicates an identifier of PL associated with the reference signal;

determining PL associated with the reference signals corresponding to the identifiers by using fourth information, wherein the fourth information characterizes the corresponding relation between the PL and the identifiers;

and determining the transmission power for the first node by using the PL associated with the determined reference signal.

In the above scheme, the method further comprises:

and receiving the fourth information.

In the above solution, the first information indicates a transmission power or a power adjustment value for the first node;

In the above scheme, the first information indicates an identifier of a transmission power or a power adjustment value for the first node;

determining a transmitting power or a power adjustment value corresponding to the identifier by using the fifth information, wherein the fifth information represents a corresponding relation between the transmitting power or the power adjustment value and the identifier;

and determining the transmission power for the first node by using the determined transmission power or the power adjustment value.

In the above scheme, the method further comprises:

and receiving the fifth information.

In the above scheme, the first information indicates an identifier of a reference signal;

determining the PL associated with the reference signal corresponding to the identifier of the reference signal by using sixth information, wherein the sixth information represents the corresponding relation between the PL and the identifier of the reference signal;

In the above scheme, the method further comprises:

And receiving the sixth information.

In the above scheme, the first information is received by one of the following ways:

radio Resource Control (RRC) signaling;

a medium access control element (MAC CE);

downlink Control Information (DCI).

In the above scheme, the method further comprises:

and carrying out uplink transmission facing the first node by utilizing the determined transmission power facing the first node and adopting a transmission mode of a reference signal when the transmission power facing the first node is determined.

The embodiment of the application also provides a power control method applied to the second node, which comprises the following steps:

and sending first information to a terminal, wherein the first information is used for determining the sending power facing a first node by the terminal, and the first node is used for uplink receiving.

In the above scheme, the method further comprises:

and sending second information to the terminal, wherein the second information at least indicates to send at least one reference signal carried on the corresponding resource, and the sent at least one reference signal is used for uplink detection.

In the above scheme, the method further comprises:

Receiving seventh information sent by the first node, wherein the seventh information indicates PL associated with a reference signal;

and transmitting the first information to the terminal based on the seventh information.

In the above scheme, the method further comprises:

and sending third information to the terminal, wherein the third information indicates beam management.

In the above scheme, the method further comprises:

receiving eighth information sent by the first node, wherein the eighth information indicates a reference signal of which the signal quality meets a preset condition;

and transmitting second information to the terminal based on the eighth information.

In the above solution, the second information further indicates a transmission power of the at least one reference signal.

In the above scheme, the second information implicitly indicates the transmission power of the at least one reference signal;

or,

the second information indicates a specific transmission power.

In the above scheme, the first information indicates PL associated with the reference signal, or the first information indicates an identification of the reference signal.

In the above scheme, the method further comprises:

transmitting fourth information to the terminal, wherein the fourth information characterizes the corresponding relation between PL and the identifier;

Or,

and transmitting sixth information to the terminal, wherein the sixth information characterizes the correspondence between the PL and the identification of the reference signal.

In the above solution, the first information indicates a transmission power or a power adjustment value for the first node, or the first information indicates an identification of the transmission power or the power adjustment value for the first node.

In the above scheme, the method further comprises:

and transmitting fifth information to the terminal, wherein the fifth information characterizes the corresponding relation between the transmitting power or the power adjustment value and the identifier.

In the above scheme, the first information is sent to the terminal by one of the following modes:

RRC signaling;

MAC CE；

DCI。

the embodiment of the application also provides a power control device, which comprises:

the first receiving unit is configured to receive first information, where the first information is used for the terminal to determine a transmission power for a first node, and the first node is used for uplink reception.

the first sending unit is configured to send first information to a terminal, where the first information is used for the terminal to determine sending power facing a first node, and the first node is used for uplink receiving.

The embodiment of the application also provides a terminal, which comprises: a first processor and a first communication interface; wherein,,

the first communication interface is configured to receive first information, where the first information is used for the terminal to determine a transmission power facing a first node, and the first node is used for uplink reception.

The embodiment of the application also provides a node, which comprises: a second processor and a second communication interface; wherein,,

the second communication interface is configured to send first information to a terminal, where the first information is used for the terminal to determine a sending power facing a first node, and the first node is used for uplink receiving.

The embodiment of the application also provides a terminal, which comprises: a first processor and a first memory for storing a computer program capable of running on the processor,

the first processor is configured to execute the steps of any method on the terminal side when running the computer program.

The embodiment of the application also provides a node, which comprises: a second processor and a second memory for storing a computer program capable of running on the processor,

and the second processor is used for executing any step of the method at the second node side when the computer program is run.

The embodiment of the application also provides a storage medium, on which a computer program is stored, where the computer program when executed by a processor implements the steps of any method on the terminal side or implements the steps of any method on the second node side.

The power control method, the device, the related equipment and the storage medium provided by the embodiment of the application, the terminal receives first information sent by the second node, the first information is used for determining the sending power facing the first node by the terminal, and the first node is used for uplink receiving. According to the scheme provided by the embodiment of the application, the base station sends the indication information, and the indication information indicates the sending power of the terminal facing the first node, so that the terminal can determine the sending power facing the first node, and further can control the uplink sending power facing the first node.

Drawings

FIG. 1 is a diagram of a conventional network deployment in the related art;

FIG. 2 is a schematic diagram of a network deployment of a related art node including TX only;

FIG. 3 is a flow chart of a method for power control according to an embodiment of the present application;

FIG. 4 is a flowchart illustrating another power control method according to an embodiment of the present application;

FIG. 5 is a flow chart of a method for power control according to an embodiment of the application;

FIG. 6 is a flow chart of another method for power control according to an embodiment of the present application;

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

FIG. 8 is a schematic diagram of another power control device according to an embodiment of the present disclosure;

fig. 9 is a schematic diagram of a terminal structure according to an embodiment of the present application;

FIG. 10 is a schematic view of a node structure according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a power control system according to an embodiment of the present application.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings and examples.

In a conventional power control manner, a UE performs Propagation Loss (PL) measurement based on a reference signal such as a downlink Synchronization Signal Block (SSB) or a channel state information reference signal (CSI-RS); specifically, the UE calculates uplink transmission power according to P0 and alpha parameters configured by the system and PL obtained by estimating a downlink reference signal, where the uplink transmission power may be calculated by the following formula:

txp=p0+alpha pl+other parameters;

wherein the other parameters include a delta parameter (i.e., delta _TF,b,f,c (i) Different adjustment values corresponding to different transport formats) and control adjustment parameters, f _-b,f,c. (i) (mainly for closed loop power control and regulation). The other parameters may be understood with reference to the related art.

For the node of Rx only, since it can only be used for uplink reception, lacks downlink transmission, and is different from the base station in location, so that PL cannot be acquired based on SSB or CSI-RS transmitted by the base station, and therefore, measurement of PL is lacking as a basis for power control for uplink transmission power.

Therefore, in terms of power control, there is a problem in the node of Rx only, compared to the base station having both uplink and downlink functions.

Based on this, in various embodiments of the present application, the base station transmits indication information to indicate the transmission power of the node facing Rx only for the terminal, so that the terminal can determine the transmission power of the node facing Rx only.

The embodiment of the application provides a power control method, which is applied to a terminal, as shown in fig. 3, and includes:

step 301: receiving first information, wherein the first information is used for determining the transmitting power facing a first node by the terminal, and the first node is used for uplink receiving;

step 302: and determining the transmission power facing the first node by using the first information, and performing uplink transmission facing the first node by using the determined transmission power facing the first node by using a transmission mode of a reference signal adopted when determining the transmission power facing the first node.

In practical application, the terminal may be referred to as UE or user.

In step 301, the terminal receives first information sent by a second node (specifically, a base station), and in the process that the second node communicates with the terminal, the second node can perform uplink and downlink transmission. Accordingly, the first node is used for uplink reception in the process of communicating with the terminal, and specifically, the first node is only used for uplink reception or not carrying out downlink transmission with the terminal.

In an embodiment, the first information may be received by one of:

RRC signaling;

MAC CE；

DCI。

the first node is the Rx only node, and the first node can only receive uplink, that is, the first node is a node only capable of uplink reception.

Since the first node can only perform uplink reception, the network side can estimate PL through the uplink reference signal and inform the terminal.

Based on this, in an embodiment, the method may further include:

And the terminal receives the second information sent by the second node.

In practical application, the reference signal may be transmitted multiple times in order to ensure measurement quality.

The terminal may receive the second information by one of:

RRC；

MAC CE；

DCI。

the manner in which the second information is received is not limited in the embodiments of the present application.

In practicing the aspects of the present examples, beam scanning and measurement of PL may be performed simultaneously.

Of course, beam scanning and PL measurement may also be performed separately. Based on this, in an embodiment, before the terminal receives the second information, the method may further include:

receiving third information, wherein the third information indicates beam management, namely beam scanning;

and transmitting a reference signal based on the third information.

Here, the terminal receives the third information transmitted by the second node. After receiving the reference signals, the first node can learn which reference signal has the best receiving performance (may also be referred to as receiving quality) for the first node, and the first node reports the receiving performance of each reference signal to the second node, so that the second node determines at least one reference signal resource based on the reported information, so that the terminal sends at least one reference signal carried on the corresponding resource, thereby performing uplink detection.

The terminal may receive the third information by one of:

RRC；

MAC CE；

DCI。

the manner in which the third information is received is not limited in the embodiments of the present application.

In practical application, the reference signal may include a channel Sounding Reference Signal (SRS), which is not limited in the embodiment of the present application, so long as the reference signal can perform uplink sounding.

In practice, the second node needs to indicate the reference power of the reference signal in order to be able to make PL measurements.

Based on this, in an embodiment, the second information further indicates a transmit power of the at least one reference signal;

In practical application, the second information may implicitly indicate the transmission power of the at least one reference signal, for example, the transmission power is the maximum transmission power by default, and the terminal determines that the at least one reference signal adopts the maximum transmission power as long as the terminal receives the second information. As another example, the predefined may be PUSCH power or existing SRS power, and the terminal determines that the at least one reference signal adopts a predefined transmission power whenever the terminal receives the second information.

The second information may indicate a transmission power of the at least one reference signal, at which time the second information may indicate a specific transmission power, and the terminal may determine the specific transmission power indicated by the at least one reference signal.

In practical application, the first information may specifically indicate different contents, and correspondingly, according to the difference of the contents indicated by the first information, the process of determining the sending power by the terminal is also different, which specifically includes:

in a first case, the first information directly indicates the PL associated with the reference signal, that is, the second node directly sends the PL associated with the reference signal to the terminal, and the terminal directly uses the information to determine the transmission power for the first node, that is, the terminal uses the first information to determine the transmission power for the first node.

In the second case, a plurality of PL values are configured by RRC, and then which PL value is indicated by DCI.

In particular, the first information indicates an identification (such as an index) of a path loss associated with a reference signal;

the terminal determines the path loss associated with the reference signal corresponding to the identifier by using fourth information, wherein the fourth information characterizes the corresponding relation between the path loss and the identifier; and then determining the transmission power for the first node by using the PL associated with the determined reference signal.

Wherein, in an embodiment, the method may further comprise:

and receiving the fourth information sent by the second node.

In a third case, the first information directly indicates a transmission power for the first node, that is, the second node directly transmits power (may be total power or power spectrum density, that is, power of each Physical Resource Block (PRB)), and the transmitted power may be a transmission power of PUSCH, SRS, or PUCCH, that is, indicates a transmission power of PUSCH, SRS, or PUCCH; the terminal directly uses the first information to determine the transmission power facing the first node, namely, the transmission power indicated by the first information is used as the transmission power facing the first node.

In a fourth case, the first information directly indicates a power adjustment value for the first node (i.e. according to a difference between PL associated with a reference signal and PL for a base station), that is, the second node directly transmits the power adjustment value, and determines the transmission power for the first node, that is, the terminal directly uses the first information and the transmission power for the second node to determine the transmission power for the first node.

In a fifth case, a plurality of transmission powers or a plurality of power adjustment values are configured through RRC, and then which transmission power or which power adjustment value is used is indicated through DCI.

In particular, the first information indicates an identity (such as an index) of a transmission power or a power adjustment value for the first node;

the terminal determines the sending power or the power adjustment value corresponding to the identifier by using the fifth information, wherein the fifth information represents the corresponding relation between the sending power or the power adjustment value and the identifier;

Wherein, in an embodiment, the method may further comprise:

and receiving the fifth information.

In the sixth case, the correspondence between the plurality of reference signals and PL is configured by RRC, the reference signals are indicated by DCI, and PL corresponding to the reference signals indicated by DCI is obtained by the correspondence.

Specifically, the first information indicates an identity of a reference signal;

the terminal determines the PL associated with the reference signal corresponding to the identifier of the reference signal by using sixth information, wherein the sixth information represents the corresponding relation between the PL and the identifier of the reference signal;

Wherein, in an embodiment, the method may further comprise:

and receiving the sixth information.

In practical application, the PL associated with the reference signal may be referred to as PL associated with the reference signal, or may be referred to as PL obtained by measurement, which is not limited in this embodiment of the present application, so long as the function thereof is implemented.

In the embodiment of the present application, the transmission manner may include precoding, spatial relationship (may also be referred to as spatial filtering), and the embodiment of the present application is not limited thereto.

Correspondingly, the embodiment of the application also provides a transmission power control method applied to the second node, which comprises the following steps:

Wherein, in an embodiment, the method may further comprise:

Accordingly, the second node receives seventh information sent by the first node, the seventh information indicating PL associated with the reference signal;

In an embodiment of the present application, when the beam scanning and the measurement of PL are performed separately, in an embodiment, before the second information is transmitted, the method may further include:

When the beam scanning and the measurement of PL are performed simultaneously, in an embodiment, before the second information is transmitted to the terminal, the method may further include:

In an embodiment, the method may further comprise:

and sending fourth information to the terminal, wherein the fourth information characterizes the corresponding relation between the PL and the identifier.

In an embodiment, the method may further comprise:

and sending fifth information to the terminal.

In an embodiment, the method may further comprise:

In an embodiment, the first information is sent to the terminal by one of:

RRC signaling;

MAC CE；

DCI。

the embodiment of the application also provides a power control method, as shown in fig. 4, which includes:

step 401: the second node sends first information to the terminal, wherein the first information is used for determining the sending power facing the first node by the terminal, and the first node is used for uplink receiving;

step 402: and the terminal determines the transmission power facing the first node by using the first information, and performs uplink transmission facing the first node by using the determined transmission power facing the first node in a transmission mode of a reference signal adopted when determining the transmission power facing the first node.

Here, it should be noted that the specific processing procedures of the second node and the terminal are described in detail above, and are not described herein again.

According to the power control method provided by the embodiment of the application, the terminal receives first information sent by the second node, the first information is used for determining the sending power facing the first node by the terminal, and the first node is used for uplink receiving. According to the scheme provided by the embodiment of the application, the base station sends the indication information, and the indication information indicates the sending power of the node facing the Rx only, so that the terminal can determine the sending power of the node facing the Rx only and further can control the uplink sending power of the node facing the Rx only.

The present application is described in further detail below in connection with examples of application.

First, a flow of power control based on a beam scanning procedure and measurement of PL being performed separately (i.e., the two procedures are not performed simultaneously) is described, as shown in fig. 5, the flow including the steps of:

step 501: the base station (i.e., gNB) instructs the UE to perform beam scanning of SRS (English may be expressed as SRS sounding) (i.e., the base station transmits third information to the UE);

by beam scanning, the node of RX only can learn which uplink beam has the best receiving performance and quality for the node of RX only.

The beam scanning may be understood as that the UE sends one or more SRS resources in one SRS resource set (english may be expressed as set) configured by the base station, and the use of the SRS resource set (english may be expressed as user) is beam management (english may be expressed as beam management); here, the plurality of SRS resources may use the same or different spatial filtering (spatial filtering may be understood as an uplink transmission direction or a beam direction).

Step 502: after receiving the indication, the UE transmits SRS according to the indication of the base station;

step 503: the node of RX only may report the measurement result to the base station, for example, the node of RX only selects the SRS with the best UE, and may report the optimal SRS resource, for example, may report multiple SRS, for example, SRS #0, #1, #2;

Here, the SRS is carried on SRS resources, and each SRS resource has a corresponding resource number, so the reported measurement result may include the resource number, and each SRS resource is one of the configured resource sets (english may be expressed as resource set).

Step 504: after receiving the report information, the base station instructs the UE to send one or more SRS resources (such as SRS #0, #1, #2, or only SRS # 0), that is, send second information to the UE, and perform uplink probing (for obtaining PL (i.e. the node for Rx only performs PL measurement), channel quality, channel state, etc.);

here, the above indication may include an indication of power, and specifically there may be the following indication modes:

first, in the case of no explicit indication, i.e., in the case of implicit indication, the maximum transmission power is adopted by default;

second, indicating a certain transmit power TXP1 (or power spectral density);

third, in the case of no configuration or direct indication, that is, in the case of no display indication, the UE may be instructed by default or directly to transmit at the existing power of a certain channel, for example, the transmission power of PUSCH (for a base station) or SRS (for a base station) (in the case of no explicit indication, may be performed at the existing transmission power of SRS); the base station may calculate the transmit power of the UE through the Reference Signal Received Power (RSRP) reported by the UE (where pl=epre-RSRP, where EPRE is configured by the base station and represents the capability on each Resource Element (RE), that is, the power on each RE during downlink transmission), so that the transmit power of the SRS of the UE is known, or the base station may instruct the UE to report the transmit power, so as to obtain the transmit power of the SRS of the UE.

Fourth, the base station directly indicates a certain specific value (e.g., total transmission power, or power per PRB). One way is to directly indicate specific values, such as 20dbm,23dbm,19dbm, etc.; for example, the base station may directly specify a transmission power according to the RSRP reported by the UE, for example, 17dBm may be configured when the RSRP is-80 dBm, 20dBm when the RSRP is-90 dBm, and so on.

Step 505: after receiving the instruction, the UE performs SRS transmission according to the instructed power, which may be referred to as performing SRS resource transmission according to the instructed power;

here, in order to secure measurement quality of PL, the SRS resource (e.g., # 0) in a certain direction may be transmitted a plurality of times.

Step 506: the node of Rx only receives the SRS resource sent by the UE, can calculate the PL associated with the SRS, and sends the PL associated with the SRS to the base station;

here, when SRS resources are transmitted a plurality of times, each time SRS resources are transmitted, a node of Rx only calculates PL once, averages PL calculated a plurality of times as PL associated with the SRS, or may filter measured PL by layer 1 or layer 1 and layer 3 and then as PL associated with the SRS.

Step 507: after receiving the PL sent by the node of Rx only, the base station instructs the UE to determine the sending power of the node facing Rx only according to the corresponding power or PL, and carries out uplink transmission;

The method for indicating the base station can comprise the following steps:

first, the PL related to SRS is directly transmitted to the UE;

second, power (either total power or power spectral density, i.e., power per PRB) is directly indicated to the UE; the power may be calculated based on PL related to SRS, and the corresponding power may be a transmission power of uplink PUSCH or SRS or PUCCH;

third, an adjustment value indicating power (the adjustment value may be based on a difference between PL associated with SRS and PL facing the base station);

fourth, the node of RX only receives the transmission of the configured SRS, calculates the PL corresponding to each SRS according to the received power of the SRS and sends the SRS ID and PL information to the base station, the base station sends the SRS ID and PL information to the UE (through RRC signaling), the base station schedules the UE for transmission, instructs the SRS ID (through DCI indication), the terminal determines the PL required for uplink transmission according to the SRS ID indicated by the base station and calculates the uplink transmission power based on the SRS, and performs uplink transmission, wherein the SRS information used when determining the PL required to be considered comprises an SRI based on DCI and/or an association or spatial relationship between the uplink transmission based on the RRC signaling and the SRS, the SRI is used for indicating that the transmission of the PUSCH has the same uplink transmission beam as a certain one (through RRC signaling), and the SRS is also associated with a spatial relationship based on the RRC signaling or a spatial relationship which is understood to be a certain spatial relationship, and the SRS is also used for an understanding that the SRS transmission has a certain spatial relationship;

The indication mode can be realized by the following signaling according to the need:

1) Based on the MAC CE indication;

2) Configuring a plurality of sets of power (i.e., a power list), adjustment values (i.e., an adjustment value list), or SRS IDs and PLs (i.e., a set of { SRS IDs and corresponding PLs } by RRC, based on DCI;

3) And directly configuring to the UE through RRC reconfiguration.

Step 508: after the base station instructs the UE, the UE performs uplink PUSCH or PUCCH transmission (Rx only oriented node), and the adopted power is determined based on the instruction of the base station, and the transmission mode is the same as the transmission mode of the corresponding SRS.

Next, a flow of power control based on simultaneous measurement of the beam scanning procedure and PL will be described, as shown in fig. 6, including the steps of:

step 601: the base station (i.e. gNB) instructs the UE to perform SRS transmission (also called beam scanning) according to a certain power, namely, second information is sent to the UE;

first, in the case of no explicit indication, i.e. in the case of an implicit indication, the maximum transmit power may be adopted in terms of the maximum transmit power, i.e. by default;

second, indicating a certain transmit power TXP1 (or power spectral density);

Third, in the case of no configuration or direct indication, i.e., in the case of no display indication, the UE may be instructed by default or directly to transmit at an existing power of a certain channel, for example, a transmission power of PUSCH (for a base station) or SRS (for a base station) (in the case of no explicit indication, may be performed at an existing transmission power of SRS); the base station may calculate the UE transmit power through the RSRP reported by the UE (where pl=epre-RSRP, EPRE is configured by the base station), so that the UE SRS transmit power is known, or the base station may instruct the UE to report the transmit power, so as to obtain the UE SRS transmit power.

Fourth, the base station directly indicates a certain specific value (e.g., total transmission power, or power per PRB). One way is to directly indicate specific values, such as 20dbm,23dbm,19dbm, etc. Alternatively, according to the RSRP reported by the UE, a transmission power may be directly specified, for example, 17dBm may be configured when the RSRP is-80 dBm, and 20dBm may be employed when the RSRP is-90 dBm.

Step 602: after receiving the instruction, the UE sends SRS according to the instruction of the base station;

step 603: the node of RX only receives the corresponding SRS and measures to obtain the PL associated with the SRS, and sends the PL associated with the SRS to the base station;

Here, in order to secure measurement quality of PL, the SRS resource in a certain direction may be transmitted a plurality of times.

It is assumed that, by measurement, the node of RX only selects srs#1 for uplink transmission of UE, and subsequent PUSCH transmission adopts the same transmission scheme (including precoding, spatial state or spatial filtering, etc.) as srs#1

Through measurement, the node of RX only acquires the PL between the UE and the node of RX only, namely the PL associated with SRS; here, the node of RX only calculates PL associated with SRS according to the transmission power of the uplink SRS of the base station instruction UE and the power received by the node of RX only.

Step 604: after receiving the PL sent by the node of Rx only, the base station instructs the UE to determine the sending power of the node facing Rx only according to the corresponding power or PL;

the method for indicating the base station can comprise the following steps:

first, the PL related to SRS is directly transmitted to the UE;

Fourth, the node of RX only receives the transmission of the configured SRS, calculates the PL corresponding to each SRS according to the received power of the SRS, and sends the SRS ID and PL information to the base station, the base station sends the SRSID and PL information to the UE, the base station schedules the UE for transmission, instructs the SRS ID, and the terminal determines the PL required to be considered for uplink transmission according to the SRS ID indicated by the base station, calculates the uplink transmission power based on the PL required to be considered for uplink transmission, and carries out uplink transmission;

1) Based on the MAC CE indication;

3) And directly configuring to the UE through RRC reconfiguration.

Step 605: after the base station instructs the UE, the base station may schedule the UE to perform PUSCH transmission (Rx only oriented node), where the PUSCH transmission direction is the same as that of srs#1 or has the same precoding or spatial relationship (spatial filtering), that is, the transmission modes of the two are the same.

The UE determines the transmission power based on the indication of the base station, and instructs PUSCH to transmit PUSCH in the same direction as srs#0 based on DCI, where the DCI may directly indicate the resource ID (or number) of the corresponding SRS; the base station may also configure the transmission of the PUCCH of the UE, where the PUCCH uses the same spatial filtering as srs#1, i.e. the transmission modes of the two are the same.

When the base station indicates the transmitting power of the node facing the Rx only of the UE, and PL information is directly configured through the MAC CE, that is, when the MAC CE directly carries the PL information, for PUSCH, PUCCH, and SRS, the UE may calculate the uplink transmitting power according to the corresponding PL; when the MAC CE carries the SRS ID (the corresponding SRS resource adopts the same or different transmission direction (the transmission direction may include TCI state or spatial filtering, spatial relation) and the corresponding PL information, that is, includes the PL information associated with the SRS resource or resource ID, if the corresponding PUSCH, PUCCH or SRS is indicated to adopt the same transmission direction as the corresponding SRS resource or is associated with a certain SRS resource, the corresponding transmission power is calculated based on the PL associated with the SRS indicated by the MAC CE.

Illustratively, the corresponding MAC CE may include at least one of:

a serving cell ID;

BWP ID；

resource ID of SRS and corresponding PL;

reference signal ID of PL of PUSCH and corresponding PL.

When the corresponding transmission power or the total power of PRBs (the UE can calculate the transmission power of a single PRB from the total power and the number of allocated PRBs) is configured for each channel by the MAC CE, the transmission power may be configured for each of PUSCH, PUCCH, SRS and the UE is not required to calculate the transmission power because the transmission power is directly configured, in which case the MAC CE needs to include PUSCH, PUCCH, SRS resource IDs and the transmission power corresponding to the channels and signals.

When the base station indicates the transmit power of the UE to the node of Rx only, PL information associated with SRS resources (which may be identified by SRS resource IDs) may be indicated through RRC signaling, and MAC signaling may include at least one of the following:

the PL reference signal of PUSCH includes an instruction of SRS resource (i.e., ID of SRS resource);

the power control parameter of the PUSCH comprises PL information of the PUSCH corresponding to the instruction of the SRS resource;

the PUSCH power control information includes a reference signal ID of PL associated with the SRS resource indication.

When the reference signal corresponding to the reference signal ID of the PL related to the indication of the SRS resource is SRS, the PL information corresponding to the transmission power reference may be directly indicated by the SRI in the DCI.

When the base station indicates the transmit power of the UE to the node of Rx only, the PL specifically associated with the SRS may be configured through RRC signaling.

Accordingly, in the configuration parameters of the RRC related to the PUCCH, the PL reference signal of the PUCCH includes an indication of SRS resources and/or a resource ID of the SRS. Specifically, the configuration of the RRC of the PL of the PUCCH includes at least one of the following information:

the reference signal of PL may be configured as an indication of SRS resources or an ID of SRS (such as index);

PL may be PL based on SRS measurements (also referred to as SRS-related PL).

When the PL reference signal configured by the PUCCH is the SRS resource or the ID of the corresponding SRS resource, the PL measured on the corresponding SRS resource or the PL associated with the SRS indicated by the MAC CE or RRC signaling needs to be referred to when determining the uplink transmission power of the PUCCH.

As can be seen from the above description, in the embodiment of the present application, PL is obtained through configuration of a base station, and is not measured by the UE itself, so that the problem of power control of uplink transmission of the UE towards the node of RX only is solved.

In order to implement the terminal-side solution of the embodiment of the present application, the embodiment of the present application further provides a power control device, which is disposed on a terminal, as shown in fig. 7, and the device includes:

a first receiving unit 701, configured to receive first information, where the first information is used for the terminal to determine a transmission power for a first node, and the first node is used for uplink reception.

In one embodiment, as shown in fig. 7, the apparatus may further include: a second transmitting unit 702; wherein,,

the first receiving unit 701 is further configured to receive second information, where the second information at least indicates to send at least one reference signal carried on a corresponding resource, and the sent at least one reference signal is used for performing uplink sounding;

the second transmitting unit 702 is configured to transmit at least one reference signal indicated by the second information.

In an embodiment, the first receiving unit 701 is further configured to receive third information before receiving the second information, where the third information indicates beam management;

the second transmitting unit 702 is configured to transmit a reference signal based on the third information.

In an embodiment, the apparatus may further include: a determination unit; wherein,,

The second information further indicates a transmit power of the at least one reference signal;

the determining unit is configured to determine a transmission power of the at least one reference signal using the second information;

the second transmitting unit 702 is configured to transmit the at least one reference signal using a transmission power of the at least one reference signal.

In an embodiment, the second information implicitly indicates a transmission power of the at least one reference signal, and the determining unit is configured to determine that the at least one reference signal adopts a maximum transmission power or a predefined transmission power;

or,

the second information indicates a specific transmission power, and the determining unit is configured to determine that the at least one reference signal adopts the indicated specific transmission power.

In an embodiment, the first information indicates PL associated with a reference signal;

the determining unit is further configured to determine a transmission power for the first node using the first information.

In an embodiment, the first information indicates an identity of a PL associated with the reference signal;

the determining unit is further configured to determine PL associated with the reference signal corresponding to the identifier by using fourth information, where the fourth information characterizes a correspondence between PL and the identifier; and determining a transmit power for the first node using the determined PL associated with the reference signal.

In one embodiment, the first receiving unit 701 is further configured to receive the fourth information.

In an embodiment, the first information indicates a transmit power or a power adjustment value for the first node;

In an embodiment, the first information indicates an identity of a transmit power or a power adjustment value for the first node;

the determining unit is further configured to determine a transmission power or a power adjustment value corresponding to the identifier by using the fifth information, where the fifth information characterizes a correspondence between the transmission power or the power adjustment value and the identifier; and determining a transmit power for the first node using the determined transmit power or power adjustment value.

In an embodiment, the first receiving unit 701 is further configured to receive the fifth information.

In an embodiment, the first information indicates an identity of a reference signal;

the determining unit is further configured to determine PL associated with the reference signal corresponding to the identifier of the reference signal by using sixth information, where the sixth information characterizes a correspondence between PL and the identifier of the reference signal; and determining a transmit power for the first node using the determined PL associated with the reference signal.

In an embodiment, the first receiving unit 701 is further configured to receive the sixth information.

In an embodiment, the first receiving unit 701 is configured to receive the first information by one of the following ways:

RRC signaling;

MAC CE；

DCI。

in an embodiment, the second sending unit 702 is further configured to:

In practical applications, the first receiving unit 701 may be implemented by a communication interface in the power control device, the second sending unit 702 may be implemented by a processor in the power control device in combination with the communication interface, and the determining unit may be implemented by a processor in the power control device.

In order to implement the method at the network device side in the embodiment of the present application, the embodiment of the present application further provides a power control device, which is disposed on the second node, as shown in fig. 8, and the device includes:

a first sending unit 801, configured to send first information to a terminal, where the first information is used for the terminal to determine a sending power for a first node, and the first node is used for uplink receiving.

In one embodiment, the first sending unit 801 is further configured to:

In one embodiment, as shown in fig. 8, the apparatus may further include: a second receiving unit 802, configured to receive seventh information sent by the first node, where the seventh information indicates PL associated with a reference signal;

the first sending unit 801 is configured to send the first information to the terminal based on the seventh information.

In an embodiment, the first sending unit 801 is further configured to send third information to the terminal, where the third information indicates beam management.

In an embodiment, the second receiving unit 802 is further configured to receive eighth information sent by the first node, where the eighth information indicates a reference signal whose signal quality meets a preset condition;

the first sending unit 801 is configured to send second information to the terminal based on the eighth information.

In an embodiment, in case the first information indicates an identity of a PL associated with a reference signal or the first information indicates an identity of a reference signal, the first sending unit 801 is further configured to:

or,

In an embodiment, in the case that the indication is directed to the identification of the transmission power or the power adjustment value of the first node, the first transmitting unit 801 is further configured to send fifth information to the terminal, where the fifth information characterizes a correspondence between the transmission power or the power adjustment value and the identification.

In an embodiment, the first sending unit 801 is configured to send the first information to the terminal by one of the following methods:

RRC signaling;

MAC CE；

DCI。

in practical application, the first transmitting unit 801 may be implemented by a processor in the power control device in combination with a communication interface; the second receiving unit 802 may be implemented by a communication interface in a power control device.

It should be noted that: in the power control apparatus provided in the above embodiment, only the division of each program module is used for illustration, and in practical application, the process allocation may be performed by different program modules according to needs, that is, the internal structure of the apparatus is divided into different program modules, so as to complete all or part of the processes described above. In addition, the power control device and the information configuration power control method embodiment provided in the foregoing embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiment and are not repeated herein.

Based on the hardware implementation of the program modules, and in order to implement the method at the terminal side in the embodiment of the present application, the embodiment of the present application further provides a terminal, as shown in fig. 9, the terminal 900 includes:

a first communication interface 901, capable of information interaction with a network side;

the first processor 902 is connected with the first communication interface 901 to realize information interaction with a network side, and is used for executing the method provided by one or more technical schemes of the terminal side when running a computer program;

a first memory 903, the computer program being stored on the first memory 903.

Specifically, the first communication interface 901 is configured to receive first information, where the first information is used for the terminal to determine a transmission power for a first node, and the first node is used for uplink reception.

In an embodiment, the first communication interface 901 is further configured to receive second information, where the second information at least indicates to send at least one reference signal carried on a corresponding resource, and the sent at least one reference signal is used for performing uplink sounding;

the first processor 902 is configured to send at least one reference signal indicated by the second information through the first communication interface 901.

In an embodiment, the first communication interface 901 is further configured to receive third information before receiving the second information, where the third information indicates beam management;

the first processor 902 is configured to send a reference signal through the first communication interface 901 based on the third information.

In an embodiment, the second information further indicates a transmit power of the at least one reference signal;

the first processor 902 is configured to determine a transmission power of the at least one reference signal using the second information;

the first processor 902 is configured to send the at least one reference signal through the first communication interface 901 using the sending power of the at least one reference signal.

In an embodiment, the second information implicitly indicates a transmission power of the at least one reference signal, and the first processor 902 is configured to determine that the at least one reference signal adopts a maximum transmission power or a predefined transmission power;

or,

the second information indicates a specific transmission power, and the first processor 902 is configured to determine the specific transmission power indicated by the at least one reference signal.

the first processor 902 is configured to determine, using the first information, a transmission power for the first node.

the first processor 902 is configured to determine PL associated with the reference signal corresponding to the identifier by using fourth information, where the fourth information characterizes a correspondence between PL and the identifier; and determining a transmit power for the first node using the determined PL associated with the reference signal.

Wherein, in an embodiment, the first communication interface 901 is further configured to receive the fourth information.

the first processor 902 is further configured to determine a transmit power for the first node using the first information.

the first processor 902 is further configured to determine a transmission power or a power adjustment value corresponding to the identifier by using the fifth information, where the fifth information characterizes a correspondence between the transmission power or the power adjustment value and the identifier; and determining a transmit power for the first node using the determined transmit power or power adjustment value.

In an embodiment, the first communication interface 901 is further configured to receive the fifth information.

the first processor 902 is further configured to determine a PL associated with the reference signal corresponding to the identifier of the reference signal using sixth information, where the sixth information characterizes a correspondence between PL and the identifier of the reference signal; and determining a transmit power for the first node using the determined PL associated with the reference signal.

In an embodiment, the first communication interface 901 is further configured to receive the sixth information.

In an embodiment, the first communication interface 901 is configured to receive the first information by one of the following ways:

RRC signaling;

MAC CE；

DCI。

in an embodiment, the first processor 902 is further configured to:

and performing uplink transmission for the first node by using the determined transmission power for the first node and a transmission mode of a reference signal adopted by the first communication interface 901 when determining the transmission power for the first node.

It should be noted that: the specific processing of the first processor 902 and the first communication interface 901 may be understood with reference to the above methods.

Of course, in actual practice, the various components in terminal 900 are coupled together by bus system 904. It is appreciated that the bus system 904 is used to facilitate connected communications between these components. The bus system 904 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration, the various buses are labeled as bus system 904 in fig. 9.

The first memory 903 in the embodiment of the present application is used to store various types of data to support the operation of the terminal 900. Examples of such data include: any computer program for operating on terminal 900.

The method disclosed in the embodiments of the present application may be applied to the first processor 902 or implemented by the first processor 902. The first processor 902 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method may be implemented by an integrated logic circuit of hardware or an instruction in software form in the first processor 902. The first processor 902 described above may be a general purpose processor, a digital signal processor (DSP, digital Signal Processor), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The first processor 902 may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied in a hardware decoding processor or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the first memory 903, and the first processor 902 reads information in the first memory 903, in combination with its hardware, to perform the steps of the method described above.

In an exemplary embodiment, terminal 900 can be implemented by one or more application specific integrated circuits (ASIC, application Specific Integrated Circuit), DSPs, programmable logic devices (PLD, programmable Logic Device), complex programmable logic devices (CPLD, complex Programmable Logic Device), field programmable gate arrays (FPGA, field-Programmable Gate Array), general purpose processors, controllers, microcontrollers (MCU, micro Controller Unit), microprocessors (Microprocessor), or other electronic components for performing the aforementioned methods.

Based on the hardware implementation of the program module, and in order to implement the method on the second node side in the embodiment of the present application, the embodiment of the present application further provides a node, as shown in fig. 10, the node 1000 includes:

a second communication interface 1001 capable of information interaction with a terminal;

a second processor 1002, connected to the second communication interface 1001, for implementing information interaction with a terminal, and configured to execute, when executing a computer program, a method provided by one or more technical solutions on the second node side;

second memory 1003, the computer program is stored on second memory 1003.

Specifically, the second communication interface 1001 is configured to send first information to a terminal, where the first information is used for the terminal to determine a transmission power for a first node, and the first node is used for uplink reception.

Wherein, in an embodiment, the second communication interface 1001 is further configured to:

In an embodiment, the second communication interface 1001 is further configured to receive seventh information sent by the first node, where the seventh information indicates PL associated with a reference signal;

the second processor 1002 is configured to send the first information to the terminal through the second communication interface 1001 based on the seventh information.

In an embodiment, the second communication interface 1001 is further configured to send third information to the terminal, where the third information indicates beam management.

In an embodiment, the second communication interface 1001 is further configured to receive eighth information sent by the first node, where the eighth information indicates a reference signal whose signal quality meets a preset condition;

The second processor 1002 is configured to send second information to the terminal through the second communication interface 1001 based on the eighth information.

In an embodiment, in case the first information indicates an identity of a PL associated with a reference signal or the first information indicates an identity of a reference signal, the second communication interface 1001 is further configured to:

or,

In an embodiment, in a case where the first information indicates an identifier of a transmission power or a power adjustment value for the first node, the second communication interface 1001 is further configured to send fifth information to the terminal, where the fifth information characterizes a correspondence between the transmission power or the power adjustment value and the identifier.

In an embodiment, the second communication interface 1001 is configured to send the first information to the terminal by one of the following methods:

RRC signaling;

MAC CE；

DCI。

it should be noted that: the specific processing of the second processor 1002 and the second communication interface 1001 may be understood with reference to the above-described methods.

Of course, in actual practice, the various components in node 1000 would be coupled together by bus system 1004. It is to be appreciated that the bus system 1004 serves to facilitate connective communication between these components. The bus system 1004 includes a power bus, a control bus, and a status signal bus in addition to the data bus. The various buses are labeled in fig. 10 as bus system 1004 for clarity of illustration.

The second memory 1003 in the embodiment of the present application is used to store various types of data to support the operation of the node 1000. Examples of such data include: any computer program for operating on node 1000.

The method disclosed in the embodiments of the present application may be applied to the second processor 1002 or implemented by the second processor 1002. The second processor 1002 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method described above may be performed by integrated logic circuits of hardware or instructions in software form in the second processor 1002. The second processor 1002 may be a general purpose processor, a digital signal processor (DSP, digital Signal Processor), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The second processor 1002 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied in a hardware decoding processor or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium located in a second memory 1003, said second processor 1002 reading information in the second memory 1003, performing the steps of the method described above in connection with its hardware.

In an exemplary embodiment, node 1000 may be implemented by one or more application specific integrated circuits (ASIC, application Specific Integrated Circuit), DSPs, programmable logic devices (PLD, programmable Logic Device), complex programmable logic devices (CPLD, complex Programmable Logic Device), field programmable gate arrays (FPGA, field-Programmable Gate Array), general purpose processors, controllers, microcontrollers (MCU, micro Controller Unit), microprocessors (Microprocessor), or other electronic components for performing the aforementioned methods.

It is to be understood that the memories (the first memory 903 and the second memory 1003) of the embodiments of the present application may be volatile memories or nonvolatile memories, and may include both volatile memories and nonvolatile memories. Wherein the nonvolatile Memory may be Read Only Memory (ROM), programmable Read Only Memory (PROM, programmable Read-Only Memory), erasable programmable Read Only Memory (EPROM, erasable Programmable Read-Only Memory), electrically erasable programmable Read Only Memory (EEPROM, electrically Erasable Programmable Read-Only Memory), magnetic random access Memory (FRAM, ferromagnetic random access Memory), flash Memory (Flash Memory), magnetic surface Memory, optical disk, or compact disk Read Only Memory (CD-ROM, compact Disc Read-Only Memory); the magnetic surface memory may be a disk memory or a tape memory. The volatile memory may be random access memory (RAM, random Access Memory), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as static random access memory (SRAM, static Random Access Memory), synchronous static random access memory (SSRAM, synchronous Static Random Access Memory), dynamic random access memory (DRAM, dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (ddr SDRAM, double Data Rate Synchronous Dynamic Random Access Memory), enhanced synchronous dynamic random access memory (ESDRAM, enhanced Synchronous Dynamic Random Access Memory), synchronous link dynamic random access memory (SLDRAM, syncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, direct Rambus Random Access Memory). The memory described in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

In order to implement the method provided by the embodiment of the present application, the embodiment of the present application further provides a power control system, as shown in fig. 11, where the system includes: node 1101 and terminal 1102.

Here, it should be noted that: the specific processing procedure of the node 1101 and the terminal 1102 is described in detail above, and will not be described herein.

In an exemplary embodiment, the present application further provides a storage medium, i.e. a computer storage medium, in particular a computer readable storage medium, for example, including a first memory 903 storing a computer program, where the computer program may be executed by the first processor 902 of the terminal 900 to perform the steps of the foregoing terminal-side method, and further for example, including a second memory 1003 storing a computer program, where the computer program may be executed by the second processor 1002 of the node 1000 to perform the steps of the foregoing second node-side method. The computer readable storage medium may be FRAM, ROM, PROM, EPROM, EEPROM, flash Memory, magnetic surface Memory, optical disk, or CD-ROM.

It should be noted that: "first," "second," etc. are used to distinguish similar objects and not necessarily to describe a particular order or sequence.

In addition, the embodiments described in the present application may be arbitrarily combined without any collision.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the present application.

Claims

1. A power control method, applied to a terminal, comprising:

2. The method of claim 1, wherein the first node is configured for uplink reception only or for no downlink transmission with the terminal.

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

4. A method according to claim 3, wherein prior to receiving the second information, the method further comprises:

And transmitting a reference signal based on the third information.

5. A method according to claim 3, characterized in that the second information also indicates the transmission power of the at least one reference signal;

6. The method of claim 5, wherein the second information implicitly indicates a transmit power of the at least one reference signal, and wherein determining the at least one reference signal employs a maximum transmit power or a predefined transmit power;

or,

7. The method of claim 1, wherein the first information indicates a pathloss associated with a reference signal;

8. The method of claim 1, wherein the first information indicates an identification of a pathloss associated with a reference signal;

Determining the path loss associated with the reference signal corresponding to the identifier by using fourth information, wherein the fourth information characterizes the corresponding relation between the path loss and the identifier;

and determining the transmission power for the first node by using the determined path loss associated with the reference signal.

9. The method of claim 8, wherein the method further comprises:

and receiving the fourth information.

10. The method according to claim 1, wherein the first information indicates a transmit power or a power adjustment value for the first node;

11. The method according to claim 1, wherein the first information indicates an identity of a transmit power or a power adjustment value for the first node;

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

And receiving the fifth information.

13. The method of claim 1, wherein the first information indicates an identity of a reference signal;

determining the path loss associated with the reference signal corresponding to the identifier of the reference signal by using sixth information, wherein the sixth information represents the corresponding relation between the path loss and the identifier of the reference signal;

14. The method of claim 13, wherein the method further comprises:

and receiving the sixth information.

15. The method according to any one of claims 1 to 14, wherein the first information is received by one of:

radio resource control, RRC, signaling;

a medium access control element (MAC CE);

downlink control information DCI.

16. The method according to any one of claims 1 to 14, further comprising:

17. A method of power control, applied to a second node, comprising:

18. The method of claim 17, wherein the first node is configured for uplink reception only or for no downlink transmission with the terminal.

19. The method of claim 17, wherein the method further comprises:

20. The method of claim 19, wherein the method further comprises:

receiving seventh information sent by the first node, wherein the seventh information indicates path loss associated with a reference signal;

21. The method of claim 19, wherein the method further comprises:

22. The method of claim 21, wherein the method further comprises:

23. The method of claim 19, wherein the second information further indicates a transmit power of the at least one reference signal.

24. The method of claim 23, wherein the second information implicitly indicates a transmit power of the at least one reference signal;

or,

the second information indicates a specific transmission power.

25. The method of claim 17, wherein the first information indicates a pathloss associated with a reference signal or the first information indicates an identity of a reference signal.

26. The method of claim 25, wherein the method further comprises:

transmitting fourth information to the terminal, wherein the fourth information characterizes the corresponding relation between the path loss and the identifier;

Or,

and transmitting sixth information to the terminal, wherein the sixth information characterizes the corresponding relation between the path loss and the identifier of the reference signal.

27. The method of claim 17, wherein the first information indicates a transmit power or a power adjustment value for the first node or the first information indicates an identification of a transmit power or a power adjustment value for the first node.

28. The method of claim 27, wherein the method further comprises:

29. The method according to any one of claims 17 to 28, wherein,

transmitting the first information to the terminal by one of:

RRC signaling;

MAC CE；

DCI。

30. a power control apparatus, comprising:

31. A power control apparatus, comprising:

32. A terminal, comprising: a first processor and a first communication interface; wherein,,

33. A node, comprising: a second processor and a second communication interface; wherein,,

34. A terminal, comprising: a first processor and a first memory for storing a computer program capable of running on the processor,

wherein the first processor is adapted to perform the steps of the method of any of claims 1 to 16 when the computer program is run.

35. A node, comprising: a second processor and a second memory for storing a computer program capable of running on the processor,

wherein the second processor is adapted to perform the steps of the method of any of claims 17 to 29 when the computer program is run.

36. A storage medium having stored thereon a computer program, which when executed by a processor, performs the steps of the method of any of claims 1 to 16 or performs the steps of the method of any of claims 17 to 29.