Power control method, terminal equipment and network equipment

Abstract

Disclosed are a power control method, a terminal device and a network device, the method comprising: a terminal device receiving downlink control information (DCI) sent by a network device and used for scheduling a physical uplink shared channel (PUSCH), the DCI comprising a first sounding reference signal (SRS) resource indication; the terminal device determines a value of an uplink power control parameter corresponding to the first SRS resource indication according to the DCI; and the terminal device determines, according to the value of the uplink power control parameter corresponding to the first SRS resource indication, the actual transmission power of the first uplink data carried by the PUSCH and corresponding to the first SRS resource indication. According to the method, the terminal equipment and the network equipment provided by the embodiment of the invention, higher spectrum efficiency can be achieved.

Description

[0001] This application is a divisional application of the PCT international patent application PCT / CN2018 / 071394 with an application date of January 4, 2018, which entered the Chinese national phase with Chinese patent application number 201880084690.X and the invention name being “Power control method, terminal device and network device”. Technical Field

[0002] Embodiments of the present application relate to the field of communications, and more specifically, to a power control method, terminal equipment, and network equipment. Background Art

[0003] In the New Radio (NR) system, the terminal can have multiple antenna array blocks (panels) for uplink transmission. A panel contains a group of physical antennas, and each panel can have an independent RF channel. The terminal can transmit data on multiple panels at the same time, but because the channel conditions corresponding to different panels are different, different panels need to use different transmission parameters, such as transmit power, according to their respective channel information. In order to obtain these transmission parameters, different sounding reference signal (SRS) resources need to be configured for different panels. For example, a panel can correspond to an SRS resource set, and the network side can indicate an SRS resource set through an SRI resource indicator. If DCI is used to schedule data transmission on the panel, there will be an SRI indication of the corresponding panel in a DCI. At this time, how the terminal device determines the transmit power of the uplink transmission corresponding to the SRI is a problem. Summary of the invention

[0004] In view of this, the embodiments of the present application provide a power control method, terminal device and network device, which are conducive to achieving higher spectrum efficiency.

[0005] In a first aspect, a power control method is provided, the method comprising: a terminal device receives downlink control information DCI sent by a network device for scheduling a physical uplink shared channel PUSCH, the DCI comprising a first sounding reference signal SRS resource indication; the terminal device determines, according to the DCI, a value of an uplink power control parameter corresponding to the first SRS resource indication; the terminal device determines, according to the value of the uplink power control parameter corresponding to the first SRS resource indication, an actual transmission power of first uplink data corresponding to the first SRS resource indication carried by the PUSCH.

[0006] In a possible implementation, before the terminal device receives the DCI, the method also includes: the terminal device receives first configuration information sent by the network device, and the first configuration information is used to indicate the correspondence between the value of the first SRS resource indication and the value of the uplink power control parameter; the terminal device determines the value of the uplink power control parameter corresponding to the first SRS resource indication according to the DCI, including: the terminal device determines the value of the uplink power control parameter corresponding to the first SRS resource indication according to the value of the first SRS resource indication included in the DCI, and the correspondence.

[0007] Optionally, the network device may not be configured with the corresponding relationship, or the corresponding relationship may be agreed upon by a protocol.

[0008] Optionally, the first SRS resource indication may also correspond to multiple groups of candidate values ​​of uplink power control parameters, and the terminal device may determine a group of uplink power control parameter values ​​from the multiple groups of candidate values ​​of uplink power control parameters corresponding to the first SRS resource indication.

[0009] In one possible implementation, the terminal device determines, based on the DCI, a value of an uplink power control parameter corresponding to the first SRS resource indication, including: the terminal device determines, based on the DCI, a value of a maximum transmit power corresponding to the first SRS resource indication; the terminal device determines, based on the value of the uplink power control parameter, an actual transmit power of the first uplink data corresponding to the first SRS resource indication carried by the PUSCH, including: the terminal device determines, based on the value of the maximum transmit power corresponding to the first SRS resource indication, an actual transmit power of the first uplink data.

[0010] In one possible implementation, the terminal device determines the value of the maximum transmit power corresponding to the first SRS resource indication based on the DCI, including: the terminal device determines the value of the maximum transmit power corresponding to the first SRS resource indication based on the number of SRS resource indications included in the DCI.

[0011] In one possible implementation, the terminal device determines the value of the maximum transmit power corresponding to the first SRS resource indication based on the DCI, including: the terminal device determines the value of the maximum transmit power corresponding to the first SRS resource indication based on the number of SRS resources indicated by the first SRS resource indication included in the DCI.

[0012] In a possible implementation, the terminal device determines the actual transmission power of the first uplink data corresponding to the first resource SRS indication carried by the PUSCH according to the value of the uplink power control parameter corresponding to the first SRS resource indication, including: the terminal device determines the initial transmission power of the first uplink data according to the value of the uplink power control parameter corresponding to the first SRS resource indication; the terminal device determines the actual transmission power of the first uplink data according to the initial transmission power of the first uplink data, the total initial transmission power of the uplink data carried by the PUSCH and the uplink maximum transmission power of the terminal device.

[0013] In a possible implementation manner, the DCI further includes a second SRS resource indication, and the first SRS resource indication and the second SRS resource indication respectively correspond to independent uplink power control parameter values.

[0014] In one possible implementation, before the terminal device receives the DCI sent by the network device, the method also includes: the terminal device receives second configuration information sent by the network device, and the second configuration information is used to indicate the value of the uplink power control parameter corresponding to the value indicated by the second SRS resource, wherein the value of the uplink power control parameter corresponding to the value indicated by the second SRS resource and the value of the uplink power control parameter corresponding to the value indicated by the first SRS resource are independently configured by the network device.

[0015] In a possible implementation manner, the uplink power control parameter includes a path loss value used to determine the transmission power of uplink data or information of a downlink signal used to measure the path loss value.

[0016] In a possible implementation manner, the uplink power control parameter includes an open-loop power control parameter and / or a closed-loop power control parameter.

[0017] In a possible implementation manner, the first uplink data is a portion of data carried by the PUSCH.

[0018] In a possible implementation, the method further includes: the terminal device sending the first uplink data to the network device according to the actual transmission power.

[0019] In a second aspect, a power control method is provided, the method comprising: a network device sends downlink control information DCI for scheduling a physical uplink shared channel PUSCH to a terminal device, the DCI comprising a first sounding reference signal SRS resource indication, the DCI being used by the terminal device to determine a value of an uplink power control parameter corresponding to the first SRS resource indication, so that the terminal device determines the actual transmission power of the first uplink data corresponding to the first SRS resource indication carried by the PUSCH according to the value of the uplink power control parameter corresponding to the first SRS resource indication.

[0020] In a possible implementation, before the network device sends the DCI to the terminal device, the method further includes: the network device sends first configuration information to the terminal device, where the first configuration information is used to indicate the correspondence between the value of the first SRS resource indication and the value of the uplink power control parameter.

[0021] In a possible implementation manner, the DCI further includes a second SRS resource indication, and the first SRS resource indication and the second SRS resource indication respectively correspond to independent uplink power control parameter values.

[0022] In one possible implementation, before the network device sends the DCI to the terminal device, the method also includes: the network device sends second configuration information to the terminal device, and the second configuration information is used to indicate the value of the uplink power control parameter corresponding to the value indicated by the second SRS resource, wherein the value of the uplink power control parameter corresponding to the value indicated by the second SRS resource and the value of the uplink power control parameter corresponding to the value indicated by the first SRS resource are independently configured by the network device.

[0023] In a possible implementation manner, the uplink power control parameter includes a path loss value used to determine the transmission power of uplink data or information of a downlink signal used to measure the path loss value.

[0024] In a possible implementation manner, the uplink power control parameter includes an open-loop power control parameter and / or a closed-loop power control parameter.

[0025] In a possible implementation manner, the first uplink data is a portion of data carried by the PUSCH.

[0026] In a possible implementation, the method further includes: the network device receiving the first uplink data sent by the terminal device based on the actual transmit power.

[0027] In a third aspect, a terminal device is provided, which is used to execute the method in the first aspect or any possible implementation of the first aspect. Specifically, the terminal device includes a unit for executing the method in the first aspect or any possible implementation of the first aspect.

[0028] In a fourth aspect, a network device is provided, which is used to execute the method in the second aspect or any possible implementation of the second aspect. Specifically, the network device includes a unit for executing the method in the second aspect or any possible implementation of the second aspect.

[0029] In a fifth aspect, a terminal device is provided, the terminal device comprising: a memory, a processor, an input interface, and an output interface. The memory, the processor, the input interface, and the output interface are connected via a bus system. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory, so as to execute the method in the first aspect or any possible implementation of the first aspect.

[0030] In a sixth aspect, a network device is provided, the network device comprising: a memory, a processor, an input interface, and an output interface. The memory, the processor, the input interface, and the output interface are connected via a bus system. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory, so as to execute the method in the second aspect or any possible implementation of the second aspect.

[0031] In the seventh aspect, a computer storage medium is provided for storing computer software instructions used to execute the method in the first aspect or any possible implementation of the first aspect, or the method in the second aspect or any possible implementation of the second aspect, which includes programs designed for executing the above aspects.

[0032] In an eighth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the method in the first aspect or any optional implementation of the first aspect, or the method in the second aspect or any optional implementation of the second aspect.

[0033] These and other aspects of the present application will become more clearly understood in the description of the following embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram showing an application scenario of an embodiment of the present application.

[0035] Figure 2 A schematic block diagram of an uplink power method according to an embodiment of the present application is shown.

[0036] Figure 3 Another schematic block diagram of the uplink power method according to an embodiment of the present application is shown.

[0037] Figure 4 A schematic block diagram of a terminal device according to an embodiment of the present application is shown.

[0038] Figure 5 A schematic block diagram of a network device according to an embodiment of the present application is shown.

[0039] Figure 6 Another schematic block diagram of a terminal device according to an embodiment of the present application is shown.

[0040] Figure 7 Another schematic block diagram of a network device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0042] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), LTE system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, New Radio (NR) or future 5G system, etc.

[0043] In particular, the technical solutions of the embodiments of the present application can be applied to various communication systems based on non-orthogonal multiple access technology, such as sparse code multiple access (SCMA) system, low density signature (LDS) system, etc. Of course, the SCMA system and the LDS system may also be called other names in the field of communication; further, the technical solutions of the embodiments of the present application can be applied to multi-carrier transmission systems using non-orthogonal multiple access technology, such as orthogonal frequency division multiplexing (OFDM), filter bank multi-carrier (FBMC), generalized frequency division multiplexing (GFDM), filtered orthogonal frequency division multiplexing (F-OFDM) system, etc.

[0044] The terminal device in the embodiments of the present application may refer to a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc., and the embodiments of the present application are not limited.

[0045] The network device in the embodiment of the present application can be a device for communicating with a terminal device. The network device can be a base station (Base Transceiver Station, BTS) in GSM or CDMA, or a base station (NodeB, NB) in a WCDMA system, or an evolved base station (Evolutional NodeB, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN) scenario, or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a future 5G network, or a network device in a future evolved PLMN network, etc., and the embodiments of the present application are not limited.

[0046] Figure 1 It is a schematic diagram of an application scenario of an embodiment of the present application. Figure 1 The communication system in the embodiment may include a terminal device 10 and a network device 20. The network device 20 is used to provide communication services for the terminal device 10 and access the core network. The terminal device 10 accesses the network by searching for synchronization signals, broadcast signals, etc. sent by the network device 20, thereby communicating with the network. Figure 1 The arrows shown in may represent uplink / downlink transmissions performed via a cellular link between the terminal device 10 and the network device 20 .

[0047] In the NR system, the terminal can have multiple panels for uplink transmission. A panel contains a group of physical antennas, and each panel can have an independent RF channel. The terminal can transmit data on multiple panels at the same time, but because the channel conditions corresponding to different panels are different, different panels need to use different transmission parameters, such as transmit power, according to their respective channel information. In order to obtain these transmission parameters, different SRS resources need to be configured for different panels. For example, a panel can correspond to an SRS resource set, and the network side can indicate an SRS resource set through an SRI resource indication (SRS Resource Indicator). The terminal can obtain the power control parameters corresponding to the uplink transmission based on the SRI or the SRS resource indicated by the SRI, thereby obtaining the transmit power of the corresponding uplink data.

[0048] Currently, the transmit power of the physical uplink shared channel (PUSCH) can be calculated using the following formula:

[0049]

[0050] Wherein, i is the index of a PUSCH transmission, j is the open-loop power control parameter index, and k is the index of the reference signal (RS) resource used for path loss estimation. PUSCH,c (i) is the number of (ResourceBlock, RB) occupied by PUSCH; P CMAX,c (i) The maximum transmit power of subframe i in serving cell c configured for the terminal device; P O_PUSCH,c (j) and α c (j) is the open-loop power control parameter, which is the value determined by the terminal device through high-layer signaling; PL c is the path loss value from the service cell c to the terminal device measured by the terminal device; TF,c (i) is a value determined by the terminal device according to the ratio of the number of uplink data bits sent by the PUSCH to the number of resource units included in the PUSCH; f c (i, l) is a closed-loop power control adjustment factor, which is a value determined by the terminal device based on the power adjustment command for the PUSCH.

[0051] Figure 2 FIG. 1 is a schematic block diagram of a power control method 100 according to an embodiment of the present application. Figure 2 As shown, the method 100 includes:

[0052] S110, the terminal device receives downlink control information DCI for scheduling a physical uplink shared channel PUSCH sent by a network device, where the DCI includes a first sounding reference signal resource indication SRI;

[0053] S120, the terminal device determines, according to the DCI, a value of an uplink power control parameter corresponding to the first SRI;

[0054] S130, the terminal device determines the actual transmission power of the first uplink data corresponding to the first SRI carried by the PUSCH according to the value of the uplink power control parameter corresponding to the first SRI.

[0055] Optionally, the downlink control information (Downlink Control Information, DCI) may further include a second SRI, and the first SRI and the second SRI respectively correspond to independent uplink power control parameter values.

[0056] Specifically, the network device can pre-configure the values ​​of the uplink power control parameters corresponding to the first SRI and the second SRI for the terminal device. For example, the network device can pre-configure the correspondence between the SRI and the value of the uplink power control parameter. The network device can carry the first SRI and the second SRI in the DCI used to schedule the PUSCH, so that the terminal device can determine the value of the uplink power control parameter corresponding to each SRI according to the DCI, and then determine the actual transmission power of the uplink data corresponding to each SRI. For example, based on the above formula, the network device can pre-configure the value of {j, k, l} corresponding to each SRI through high-level signaling. Different values ​​can obtain different values ​​of the uplink power control parameter. Therefore, each SRI can correspond to a set of uplink power control parameter values.

[0057] Therefore, the power control method of the embodiment of the present application is conducive to achieving higher spectrum efficiency.

[0058] Optionally, before the terminal device receives the DCI, the method also includes: the terminal device receives first configuration information sent by the network device, the first configuration information being used to indicate the correspondence between the value of the first SRI and the value of the uplink power control parameter; the terminal device determines the value of the uplink power control parameter corresponding to the first SRI based on the DCI, including: the terminal device determines the value of the uplink power control parameter corresponding to the first SRI based on the value of the first SRI included in the DCI and the correspondence.

[0059] Optionally, before the terminal device receives the DCI sent by the network device, the method also includes: the terminal device receives second configuration information sent by the network device, the second configuration information being used to indicate the value of an uplink power control parameter corresponding to the value of the second SRI, wherein the value of the uplink power control parameter corresponding to the value of the second SRI and the value of the uplink power control parameter corresponding to the value of the first SRI are independently configured by the network device.

[0060] That is to say, the network device can pre-configure the correspondence between the value of SRI and the value of the uplink power control parameter for the terminal device, and indicate it to the terminal device through high-level signaling such as Radio Resource Control (RRC). Or the correspondence can be agreed upon by the protocol. It should be understood that the correspondence can be a direct mapping relationship between SRI and the value of the uplink power control parameter, or it can be an indirect mapping relationship. For example, the correspondence can also be a mapping between the number of SRS resources indicated by SRI and the value of the uplink power control parameter, and the embodiments of the present application do not constitute a limitation on this.

[0061] Optionally, the first SRI and the second SRI may also correspond to independent candidate values ​​of uplink power control parameters. For example, the first SRI and the second SRI are both 2 bits, which may correspond to four possible values ​​of uplink power control parameters respectively. The first SRI and the second SRI may be independently configured by the network side, and may be configured to different values ​​or the same value.

[0062] Optionally, the uplink power control parameter includes a path loss value used to determine the transmission power of uplink data or information of a downlink signal used to measure the path loss value.

[0063] The downlink signal can be a downlink synchronization signal block (Synchronous Signal Block, SSB) or a channel state information reference signal (Channel State Information-Reference Signals, CSI-RS). The information of the downlink signal can be the index of the target downlink reference signal used to measure the path loss value among multiple downlink reference signals pre-configured by the network side, such as k in the above formula. In other words, the terminal device can determine the index k of a corresponding downlink signal according to the value of the first SRI, and perform downlink path loss measurement based on the downlink signal indicated by the index k, thereby obtaining the path loss value.

[0064] Optionally, the uplink power control parameter includes an open-loop power control parameter and / or a closed-loop power control parameter.

[0065] Specifically, the open-loop power control parameter value may be indication information of the target power Po, or indication information of the path loss factor a, or indication information of the closed-loop power adjustment function f(i). For example, the open-loop power control parameter value may be an index of one of the multiple target power Po pre-configured by the network side, such as j in the above formula, or an index of one of the multiple path loss factors a pre-configured by the network side, such as j in the above formula, or a process index of the closed-loop power control, such as l in the above formula.

[0066] Optionally, the terminal device determines the value of the uplink power control parameter corresponding to the first SRI based on the DCI, including: the terminal device determines the value of the maximum transmit power corresponding to the first SRI based on the DCI; the terminal device determines the actual transmit power of the first uplink data corresponding to the first SRI carried by the PUSCH based on the value of the uplink power control parameter, including: the terminal device determines the actual transmit power of the first uplink data based on the value of the maximum transmit power corresponding to the first SRI.

[0067] The terminal device can determine the maximum transmit power value corresponding to each SRI in the DCI based on the DCI, and then determine the actual transmit power of the uplink data corresponding to each SRI based on the maximum transmit power value corresponding to each SRI and the calculation formula for the uplink transmit power.

[0068] Optionally, the terminal device determines the value of the maximum transmit power corresponding to the first SRI according to the DCI, including: the terminal device determines the value of the maximum transmit power corresponding to the first SRI according to the number of SRIs included in the DCI. For example, the DCI includes N SRI indications, and the maximum transmit power of uplink data transmission corresponding to each SRI indication (including the first SRI) is P c,max / N, where P c,max The total maximum transmit power supported by the terminal.

[0069] Optionally, the terminal device determines the value of the maximum transmit power corresponding to the first SRI according to the DCI, including: the terminal device determines the value of the maximum transmit power corresponding to the first SRI according to the number of SRS resources indicated by the first SRI included in the DCI. For example, if the SRI indicates M SRS resources, and the total number of SRS resources indicated by all SRIs included in the DCI is N, then the maximum transmit power of the uplink data transmission corresponding to the SRI is M*P c,max / N, where P c,max is the total maximum transmit power supported by the terminal. For another example, if the first SRI indicates only one SRS resource (indicating that the corresponding uplink data transmission is only transmitted on one panel), the maximum transmit power of the uplink data transmission corresponding to the first SRI is P c,max / 2; if the first SRI indicates more than one SRS resource, the maximum transmit power of uplink data transmission corresponding to the first SRI is P c,max . Among them, P c,max is the total maximum transmit power supported by the terminal. It is assumed here that the terminal supports at most two panels and that multi-layer transmission is transmitted on multiple panels respectively.

[0070] Optionally, the terminal device determines the actual transmission power of the first uplink data corresponding to the first resource SRS indication carried by the PUSCH according to the value of the uplink power control parameter corresponding to the first SRS resource indication, including: the terminal device determines the initial transmission power of the first uplink data according to the value of the uplink power control parameter corresponding to the first SRS resource indication; the terminal device determines the actual transmission power of the first uplink data according to the initial transmission power of the first uplink data, the total initial transmission power of the uplink data carried by the PUSCH and the uplink maximum transmission power of the terminal device.

[0071] Specifically, the terminal determines the initial transmission power P for each uplink data transmission corresponding to each SRI included in the DCI. n , and calculate the total transmit power of all uplink data transmissions on the PUSCH scheduled by the DCI (i.e., sum the initial transmit powers of all data transmissions). If the total transmit power is less than or equal to the maximum uplink transmit power, the initial transmit power is the actual transmit power; if the total transmit power is greater than the maximum uplink transmit power, the initial transmit power needs to be adjusted according to the ratio between the total transmit power and the maximum uplink transmit power to obtain the actual transmit power. For example, the adjusted actual transmit power can be expressed as: P n,c =P n *P c,max / P α , where P c,max The total maximum transmit power supported by the terminal.

[0072] Optionally, the first uplink data is a portion of data carried by the PUSCH.

[0073] Specifically, the DCI can schedule uplink data transmission including N transmission layers, and the uplink data is data of M transmission layers among the N transmission layers, where N is an integer greater than 0, and M is an integer less than N and greater than 0, and typically M=1. If the uplink data is part of the data carried by the PUSCH scheduled by the DCI, for example, part of the data transmission layers among the multiple data transmission layers carried by the PUSCH, the terminal needs to determine the corresponding SRI for each part of the transmitted data to perform power control of the data. For example, if the PUSCH carries two layers of data transmission, an SRI can be indicated for each layer of data; if the PUSCH carries four layers of data transmission, an SRI can be indicated for every two layers of data. If the uplink data is part of the data carried by the PUSCH scheduled by the DCI, for example, part of the data transmission layers among the multiple data transmission layers carried by the PUSCH, the terminal needs to determine the actual transmission power for each data transmission layer according to the scheme provided in the present application.

[0074] Optionally, the method also includes: the terminal device sending the first uplink data to the network device according to the actual sending power.

[0075] Of course, the actual transmit power calculated by the terminal is not necessarily actually used to send the uplink data, but can also be used to calculate the power headroom report (PHR) of the current PUSCH to report to the network side, or as a reference for calculating the transmit power of other uplink signals. For example, the terminal can obtain the transmit power of the SRS based on the calculated actual transmit power of the uplink data plus a certain offset value, and there may not be actual uplink data transmission at this time.

[0076] Figure 3 FIG. 2 is a schematic block diagram of a power control method 200 according to an embodiment of the present application. Figure 3 As shown, the method 200 includes some or all of the following contents:

[0077] S210, the network device sends downlink control information DCI for scheduling a physical uplink shared channel PUSCH to the terminal device, the DCI including a first sounding reference signal resource indication SRI, the DCI is used by the terminal device to determine the value of an uplink power control parameter corresponding to the first SRI, so that the terminal device can determine the actual transmission power of the first uplink data corresponding to the first SRI carried by the PUSCH according to the value of the uplink power control parameter corresponding to the first SRI.

[0078] Therefore, the power control method of the embodiment of the present application is conducive to achieving higher spectrum efficiency.

[0079] Optionally, in an embodiment of the present application, before the network device sends the DCI to the terminal device, the method also includes: the network device sends first configuration information to the terminal device, and the first configuration information is used to indicate the correspondence between the value of the first SRI and the value of the uplink power control parameter.

[0080] Optionally, in an embodiment of the present application, before the network device sends the DCI to the terminal device, the method also includes: the network device sends second configuration information to the terminal device, the second configuration information being used to indicate the value of the uplink power control parameter corresponding to the value of the second SRI, wherein the value of the uplink power control parameter corresponding to the value of the second SRI and the value of the uplink power control parameter corresponding to the value of the first SRI are independently configured by the network device.

[0081] Optionally, in an embodiment of the present application, the uplink power control parameter includes a path loss value used to determine the transmission power of uplink data or information of a downlink signal used to measure the path loss value.

[0082] Optionally, in an embodiment of the present application, the uplink power control parameter includes an open-loop power control parameter and / or a closed-loop power control parameter.

[0083] Optionally, in an embodiment of the present application, the first uplink data is a portion of data carried by the PUSCH.

[0084] Optionally, in an embodiment of the present application, the method further includes: the network device receives the first uplink data sent by the terminal device based on the actual transmit power.

[0085] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0086] It should be understood that the interaction between the network device and the terminal device and the related characteristics and functions described by the network device correspond to the related characteristics and functions of the terminal device. And the relevant content has been described in detail in the above method 100, so for the sake of brevity, it will not be repeated here.

[0087] It should also be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0088] The power control method according to the embodiment of the present application is described in detail above. Figures 4 to 7 , describing a power control device according to an embodiment of the present application, the technical features described in the method embodiment are applicable to the following device embodiments.

[0089] Figure 4 FIG. 3 is a schematic block diagram of a terminal device 300 according to an embodiment of the present application. Figure 4 As shown, the terminal device 300 includes:

[0090] The first receiving unit 310 is configured to receive downlink control information DCI for scheduling a physical uplink shared channel PUSCH sent by a network device, where the DCI includes a first sounding reference signal resource indication SRI;

[0091] A first determining unit 320 is configured to determine a value of an uplink power control parameter corresponding to the first SRI according to the DCI;

[0092] The second determining unit 330 is configured to determine, according to the value of the uplink power control parameter corresponding to the first SRI, an actual transmission power of the first uplink data corresponding to the first SRI carried by the PUSCH.

[0093] Therefore, the terminal device of the embodiment of the present application is conducive to achieving higher spectrum efficiency.

[0094] Optionally, in an embodiment of the present application, the terminal device further includes: a second receiving unit, configured to receive first configuration information sent by the network device before the first receiving unit receives the DCI, the first configuration information being used to indicate a correspondence between a value of the first SRI and a value of an uplink power control parameter;

[0095] The first determination unit is specifically used to determine the value of the uplink power control parameter corresponding to the first SRI according to the value of the first SRI included in the DCI and the corresponding relationship.

[0096] Optionally, in an embodiment of the present application, the first determining unit is specifically configured to: determine, according to the DCI, a value of a maximum transmit power corresponding to the first SRI;

[0097] The second determination unit is specifically used to determine the actual transmission power of the first uplink data according to the value of the maximum transmission power corresponding to the first SRI.

[0098] Optionally, in an embodiment of the present application, the first determination unit is specifically used to: determine the value of the maximum transmission power corresponding to the first SRI according to the number of SRIs included in the DCI.

[0099] Optionally, in an embodiment of the present application, the first determination unit is specifically used to: determine the value of the maximum transmission power corresponding to the first SRI according to the number of SRS resources indicated by the first SRI included in the DCI.

[0100] Optionally, in an embodiment of the present application, the second determination unit is specifically used to: determine the initial transmission power of the first uplink data according to the value of the uplink power control parameter corresponding to the first SRI; determine the actual transmission power of the first uplink data according to the initial transmission power of the first uplink data, the total initial transmission power of the uplink data carried by the PUSCH, and the uplink maximum transmission power of the terminal device.

[0101] Optionally, in an embodiment of the present application, the DCI also includes a second SRI, and the first SRI and the second SRI respectively correspond to values ​​of independent uplink power control parameters.

[0102] Optionally, in an embodiment of the present application, the terminal device also includes: a third receiving unit, used to receive second configuration information sent by the network device before the first receiving unit receives the DCI, the second configuration information being used to indicate the value of the uplink power control parameter corresponding to the value of the second SRI, wherein the value of the uplink power control parameter corresponding to the value of the second SRI and the value of the uplink power control parameter corresponding to the value of the first SRI are independently configured by the network device.

[0103] Optionally, in an embodiment of the present application, the uplink power control parameter includes a path loss value used to determine the transmission power of uplink data or information of a downlink signal used to measure the path loss value.

[0104] Optionally, in an embodiment of the present application, the uplink power control parameter includes an open-loop power control parameter and / or a closed-loop power control parameter.

[0105] Optionally, in an embodiment of the present application, the first uplink data is a portion of data carried by the PUSCH.

[0106] Optionally, in an embodiment of the present application, the terminal device further includes: a sending unit, configured to send the first uplink data to the network device according to the actual sending power.

[0107] It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the terminal device 300 are respectively to implement Figure 2 For the sake of brevity, the corresponding processes of the terminal device in the method are not repeated here.

[0108] Figure 5 FIG. 4 is a schematic block diagram of a network device 400 according to an embodiment of the present application. Figure 5 As shown, the network device 400 includes:

[0109] The first sending unit 410 is used to send downlink control information DCI for scheduling a physical uplink shared channel PUSCH to a terminal device. The DCI includes a first sounding reference signal resource indication SRI. The DCI is used by the terminal device to determine the value of an uplink power control parameter corresponding to the first SRI, so that the terminal device can determine the actual transmission power of the first uplink data corresponding to the first SRI carried by the PUSCH according to the value of the uplink power control parameter corresponding to the first SRI.

[0110] Therefore, the terminal device of the embodiment of the present application is conducive to achieving higher spectrum efficiency.

[0111] Optionally, in an embodiment of the present application, the network device also includes: a second sending unit, used to send first configuration information to the terminal device before the first sending unit sends the DCI, and the first configuration information is used to indicate the correspondence between the value of the first SRI and the value of the uplink power control parameter.

[0112] Optionally, in an embodiment of the present application, the DCI also includes a second SRI, and the first SRI and the second SRI respectively correspond to values ​​of independent uplink power control parameters.

[0113] Optionally, in an embodiment of the present application, the network device further includes: a third sending unit, used to send second configuration information to the terminal device before the first sending unit sends the DCI, the second configuration information being used to indicate the value of the uplink power control parameter corresponding to the value of the second SRI, wherein the value of the uplink power control parameter corresponding to the value of the second SRI and the value of the uplink power control parameter corresponding to the value of the first SRI are independently configured by the network device.

[0114] Optionally, in an embodiment of the present application, the uplink power control parameter includes a path loss value used to determine the transmission power of uplink data or information of a downlink signal used to measure the path loss value.

[0115] Optionally, in an embodiment of the present application, the uplink power control parameter includes an open-loop power control parameter and / or a closed-loop power control parameter.

[0116] Optionally, in an embodiment of the present application, the first uplink data is a portion of data carried by the PUSCH.

[0117] Optionally, in an embodiment of the present application, the network device further includes: a receiving unit, configured to receive the first uplink data sent by the terminal device based on the actual transmit power.

[0118] It should be understood that the network device 400 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the network device 400 are respectively to implement Figure 3 For the sake of brevity, the corresponding processes of the network devices in the method are not repeated here.

[0119] like Figure 6 As shown, the embodiment of the present application also provides a terminal device 500, which can be Figure 4 The terminal device 300 in Figure 2The terminal device 500 includes: an input interface 510, an output interface 520, a processor 530 and a memory 540, and the input interface 510, the output interface 520, the processor 530 and the memory 540 can be connected through a bus system. The memory 540 is used to store programs, instructions or codes. The processor 530 is used to execute the programs, instructions or codes in the memory 540 to control the input interface 510 to receive signals, control the output interface 520 to send signals, and complete the operations in the aforementioned method embodiment.

[0120] Therefore, the terminal device of the embodiment of the present application is conducive to achieving higher spectrum efficiency.

[0121] It should be understood that in the embodiment of the present application, the processor 530 may be a central processing unit (CPU), and the processor 530 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0122] The memory 540 may include a read-only memory and a random access memory, and provide instructions and data to the processor 530. A portion of the memory 540 may also include a nonvolatile random access memory. For example, the memory 540 may also store information on the device type.

[0123] In the implementation process, the contents of the above method can be completed by the hardware integrated logic circuit in the processor 530 or the instructions in the form of software. The contents of the method disclosed in the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in the processor for execution. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 540, and the processor 530 reads the information in the memory 540 and completes the contents of the above method in combination with its hardware. To avoid repetition, it is not described in detail here.

[0124] In a specific implementation manner, the first determining unit and the second determining unit in the terminal device 300 may be composed of Figure 6The processor 530 in the terminal device 300 can be implemented by Figure 6 The output interface 520 in the terminal device 300 can be implemented by the first receiving unit, the second receiving unit and the third receiving unit. Figure 6 The input interface 510 in is implemented.

[0125] like Figure 7 As shown, the embodiment of the present application also provides a network device 600, which can be Figure 5 The network device 400 in Figure 3 The network device 600 includes: an input interface 610, an output interface 620, a processor 630 and a memory 640, and the input interface 610, the output interface 620, the processor 630 and the memory 640 can be connected through a bus system. The memory 640 is used to store programs, instructions or codes. The processor 630 is used to execute the programs, instructions or codes in the memory 640 to control the input interface 610 to receive signals, control the output interface 620 to send signals, and complete the operations in the aforementioned method embodiment.

[0126] Therefore, the network device according to the embodiment of the present application is conducive to achieving higher spectrum efficiency.

[0127] It should be understood that in the embodiment of the present application, the processor 630 may be a central processing unit (CPU), and the processor 630 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0128] The memory 640 may include a read-only memory and a random access memory, and provides instructions and data to the processor 630. A portion of the memory 640 may also include a nonvolatile random access memory. For example, the memory 640 may also store information on the device type.

[0129] In the implementation process, the contents of the above method can be completed by the hardware integrated logic circuit in the processor 630 or the instructions in the form of software. The contents of the method disclosed in the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in the processor for execution. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 640, and the processor 630 reads the information in the memory 640 and completes the contents of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.

[0130] In a specific implementation manner, the first sending unit, the second sending unit and the third sending unit in the network device 400 may be composed of Figure 7 The output interface 620 in the network device 400 can be implemented by Figure 7 The input interface 610 in is implemented.

[0131] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0132] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0133] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the unit is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0134] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0135] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0136] If this function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., and other media that can store program codes.

[0137] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A power control method, characterized in that: include: The terminal device receives downlink control information DCI for scheduling a physical uplink shared channel PUSCH sent by a network device, where the DCI includes a first sounding reference signal SRS resource indication; The terminal device determines, according to the DCI, a value of an uplink power control parameter corresponding to the first SRS resource indication; The terminal device determines, according to the value of the uplink power control parameter corresponding to the first SRS resource indication, an actual transmit power of the first uplink data carried by the PUSCH and corresponding to the first SRS resource indication; The terminal device determines, according to the DCI, a value of an uplink power control parameter corresponding to the first SRS resource indication, including: The terminal device determines, according to the number of SRS resource indications included in the DCI, a value of the maximum transmit power corresponding to the first SRS resource indication; or The terminal device determines, according to the number of SRS resources indicated by the first SRS resource indication included in the DCI, a value of the maximum transmit power corresponding to the first SRS resource indication; The terminal device determines, according to the value of the uplink power control parameter, the actual transmit power of the first uplink data carried by the PUSCH and corresponding to the first SRS resource indication, including: The terminal device determines the actual transmission power of the first uplink data according to the value of the maximum transmission power corresponding to the first SRS resource indication.

2. The method according to claim 1, characterized in that The terminal device determines, according to the value of the uplink power control parameter corresponding to the first SRS resource indication, an actual transmission power of first uplink data carried by the PUSCH and corresponding to the first resource SRS indication, including: The terminal device determines, according to the value of the uplink power control parameter corresponding to the first SRS resource indication, an initial transmission power of the first uplink data; The terminal device determines the actual transmission power of the first uplink data according to the initial transmission power of the first uplink data, the total initial transmission power of the uplink data carried by the PUSCH, and the uplink maximum transmission power of the terminal device.

3. The method according to claim 1, characterized in that The DCI also includes a second SRS resource indication, and the first SRS resource indication and the second SRS resource indication respectively correspond to independent uplink power control parameter values.

4. The method according to claim 3, characterized in that Before the terminal device receives the DCI sent by the network device, the method further includes: The terminal device receives second configuration information sent by the network device, and the second configuration information is used to indicate a value of an uplink power control parameter corresponding to the value indicated by the second SRS resource, wherein the value of the uplink power control parameter corresponding to the value indicated by the second SRS resource and the value of the uplink power control parameter corresponding to the value indicated by the first SRS resource are independently configured by the network device.

5. The method according to any one of claims 1 to 4, characterized in that The first uplink data is a portion of data carried by the PUSCH.

6. A power control method, characterized in that: include: A network device sends downlink control information DCI for scheduling a physical uplink shared channel PUSCH to a terminal device, the DCI including a first sounding reference signal SRS resource indication, and the DCI is used by the terminal device to determine a value of an uplink power control parameter corresponding to the first SRS resource indication, including: the terminal device determines the value of the maximum transmit power corresponding to the first SRS resource indication according to the number of SRS resource indications included in the DCI; or the terminal device determines the value of the maximum transmit power corresponding to the first SRS resource indication according to the number of SRS resources indicated by the first SRS resource indication included in the DCI, so that the terminal device determines the actual transmit power of the first uplink data corresponding to the first SRS resource indication carried by the PUSCH according to the value of the maximum transmit power corresponding to the first SRS resource indication.

7. The method according to claim 6, characterized in that The DCI also includes a second SRS resource indication, and the first SRS resource indication and the second SRS resource indication respectively correspond to independent uplink power control parameter values.

8. The method according to claim 7, characterized in that Before the network device sends the DCI to the terminal device, the method further includes: The network device sends second configuration information to the terminal device, and the second configuration information is used to indicate the value of the uplink power control parameter corresponding to the value indicated by the second SRS resource, wherein the value of the uplink power control parameter corresponding to the value indicated by the second SRS resource and the value of the uplink power control parameter corresponding to the value indicated by the first SRS resource are independently configured by the network device.

9. The method according to any one of claims 6 to 8, characterized in that The first uplink data is a portion of data carried by the PUSCH.

10. A terminal device, characterized in that: The terminal device comprises: A first receiving unit, configured to receive downlink control information DCI for scheduling a physical uplink shared channel PUSCH sent by a network device, wherein the DCI includes a first sounding reference signal SRS resource indication; A first determining unit, configured to determine, according to the DCI, a value of an uplink power control parameter corresponding to the first SRS resource indication; A second determining unit, configured to determine, according to a value of the uplink power control parameter corresponding to the first SRS resource indication, an actual transmit power of first uplink data carried by the PUSCH and corresponding to the first SRS resource indication; The first determining unit is specifically configured to: determining, according to the number of SRS resource indications included in the DCI, a value of the maximum transmit power corresponding to the first SRS resource indication; or Determine, according to the number of SRS resources indicated by the first SRS resource indication included in the DCI, a value of the maximum transmit power corresponding to the first SRS resource indication; The second determining unit is specifically configured to: The actual transmission power of the first uplink data is determined according to the value of the maximum transmission power corresponding to the first SRS resource indication.

11. The terminal device according to claim 10, characterized in that: The second determining unit is specifically configured to: determining, according to a value of the uplink power control parameter corresponding to the first SRS resource indication, an initial transmit power of the first uplink data; The actual transmission power of the first uplink data is determined according to the initial transmission power of the first uplink data, the total initial transmission power of the uplink data carried by the PUSCH, and the uplink maximum transmission power of the terminal device.

12. The terminal device according to claim 10, characterized in that: The DCI also includes a second SRS resource indication, and the first SRS resource indication and the second SRS resource indication respectively correspond to independent uplink power control parameter values.

13. The terminal device according to claim 12, characterized in that: The terminal device further includes: A third receiving unit is used to receive second configuration information sent by the network device before the first receiving unit receives the DCI, wherein the second configuration information is used to indicate a value of an uplink power control parameter corresponding to the value indicated by the second SRS resource, wherein the value of the uplink power control parameter corresponding to the value indicated by the second SRS resource and the value of the uplink power control parameter corresponding to the value indicated by the first SRS resource are independently configured by the network device.

14. The terminal device according to any one of claims 10 to 13, characterized in that: The first uplink data is a portion of data carried by the PUSCH.

15. A network device, characterized in that: The network equipment includes: A first sending unit is used to send downlink control information DCI for scheduling a physical uplink shared channel PUSCH to a terminal device, wherein the DCI includes a first sounding reference signal SRS resource indication, and the DCI is used by the terminal device to determine a value of an uplink power control parameter corresponding to the first SRS resource indication, including: the terminal device determines the value of the maximum transmit power corresponding to the first SRS resource indication according to the number of SRS resource indications included in the DCI; or the terminal device determines the value of the maximum transmit power corresponding to the first SRS resource indication according to the number of SRS resources indicated by the first SRS resource indication included in the DCI, so that the terminal device determines the actual transmit power of the first uplink data corresponding to the first SRS resource indication carried by the PUSCH according to the value of the maximum transmit power corresponding to the first SRS resource indication.

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