Uplink transmission power control method, terminal and network side equipment

Abstract

This application discloses an uplink transmission power control method, a terminal, and a network-side device, belonging to the field of communication technology. The uplink transmission power control method in this application includes: the terminal performing power control on a first uplink transmission according to a first downlink control information (DCI); wherein the first downlink control information (DCI) is a unicast DCI or a group common DCI.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to an uplink transmission power control method, a terminal, and network-side equipment. Background Technology

[0002] Uplink transmission power control includes open-loop power control and closed-loop power control. Closed-loop power control can be indicated by the Transmit Power Control (TPC) field in the Downlink Control Information (DCI) of the Physical Uplink Control Channel (PUCCH) or the Physical Uplink Shared Channel (PUSCH).

[0003] In multicast / multicast scheduling, since the DCI of the PUCCH for scheduling the Hybrid Automatic Repeat Request ACK (HARQ-ACK) for multicast / multi-downlink transmission is group-common, that is, PUCCH power control is implemented in a group (multiple terminals as a group). The transmission power of the PUCCH of different UEs may be different, and the requirements of different UEs for uplink power control may also be different. Currently, the terminal cannot achieve precise control of the PUCCH transmission power by scheduling the DCI of the PUCCH. Summary of the Invention

[0004] This application provides an uplink transmission power control method that can solve the problem that the terminal cannot achieve precise control of PUCCH transmission power through DCI scheduling of PUCCH.

[0005] Firstly, an uplink transmission power control method is provided, applied to a terminal, the method comprising:

[0006] The terminal performs power control on the first uplink transmission based on the first downlink control information (DCI).

[0007] The first downlink control information (DCI) is either a unicast DCI or a group common DCI.

[0008] Secondly, an uplink transmission power control method is provided, applied to network-side equipment, the method comprising:

[0009] The network-side device sends a first downlink control information (DCI) to the terminal, which is used to instruct the terminal to control the power of the first uplink transmission.

[0010] The first downlink control information (DCI) is either a unicast DCI or a group common DCI.

[0011] Thirdly, an uplink transmission power control device is provided, comprising:

[0012] The power control module is used to control the power of the first uplink transmission according to the first downlink control information (DCI).

[0013] The first downlink control information (DCI) is either a unicast DCI or a group common DCI.

[0014] Fourthly, an uplink transmission power control device is provided, comprising:

[0015] The first transmitting unit is configured to transmit first downlink control information (DCI) to the terminal, wherein the first downlink control information (DCI) is used to instruct the terminal to control the power of the first uplink transmission.

[0016] The first downlink control information (DCI) is either a unicast DCI or a group common DCI.

[0017] Fifthly, a terminal is provided, the terminal including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the uplink transmission power control method as described in the first aspect.

[0018] In a sixth aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to perform power control on a first uplink transmission according to a first downlink control information (DCI); wherein the first downlink control information (DCI) is a unicast DCI or a group common DCI.

[0019] In a seventh aspect, a network-side device is provided, the network-side device including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the uplink transmission power control method as described in the second aspect.

[0020] Eighthly, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to send a first downlink control information (DCI) to a terminal, the first downlink control information (DCI) being used to instruct the terminal to control the power of a first uplink transmission; wherein the first downlink control information (DCI) is a unicast DCI or a group common DCI.

[0021] In a ninth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the uplink transmission power control method as described in the first aspect, or implement the steps of the uplink transmission power control method as described in the second aspect.

[0022] In a tenth aspect, a chip is provided, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to run a program or instructions to implement the uplink transmission power control method as described in the first aspect, or to implement the uplink transmission power control method as described in the second aspect.

[0023] Eleventhly, a computer program / program product is provided, the computer program / program product being stored in a non-transient storage medium, the program / program product being executed by at least one processor to implement the steps of the uplink transmission power control method as described in the first aspect, or to implement the steps of the uplink transmission power control method as described in the second aspect.

[0024] In the embodiments of this application, the terminal performs power control on the first uplink transmission based on the unicast DCI or the group common DCI, which can achieve more precise power control and improve the flexibility of uplink power control. Attached Figure Description

[0025] Figure 1 This is a structural diagram of a wireless communication system applicable to the embodiments of this application;

[0026] Figure 2 This is one of the flowcharts illustrating the uplink transmission power control method provided in the embodiments of this application;

[0027] Figure 3 One of the schematic diagrams showing the first uplink transmission and the second uplink transmission in the same time unit provided in the embodiments of this application;

[0028] Figure 4 A second schematic diagram showing the first uplink transmission and the second uplink transmission in the same time unit as provided in the embodiments of this application;

[0029] Figure 5 A second schematic flowchart of the uplink transmission power control method provided in the embodiments of this application;

[0030] Figure 6 This is one of the structural schematic diagrams of the uplink transmission power control device provided in the embodiments of this application;

[0031] Figure 7 A second schematic diagram of the uplink transmission power control device provided in the embodiments of this application;

[0032] Figure 8 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0033] Figure 9 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application;

[0034] Figure 10 This is a schematic diagram of the structure of the network-side device provided in an embodiment of this application. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0036] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0037] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to applications other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0038] Figure 1This diagram illustrates a structural diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. In this context, terminal 11 can also be referred to as a terminal device or user equipment (UE). Terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), smart home (home devices with wireless communication functions, such as refrigerators, televisions, washing machines, or furniture), etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, game consoles, etc. It should be noted that the specific type of terminal 11 is not limited in this embodiment. Network-side device 12 can be a base station or a core network. The base station can be referred to as a node B, evolved node B, access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting and receiving point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only the base station in the NR system is used as an example, but the specific type of base station is not limited.

[0039] Before providing a detailed description of the uplink transmission power control method provided in the embodiments of this application, the relevant content of PUCCH transmission power control will be introduced.

[0040] For an uplink bandwidth b on a carrier f of a Pcell c, the PUCCH power control formula is as follows:

[0041]

[0042] Where i represents the transmission time, i.e., the PUCCH transmission occasion; q d The indicator for the reference signal used in the road loss calculation is shown; l indicates the closed-loop power control process indicator; P CMAX,f,c (i) represents the maximum transmit power; P O_PUCCH,b,f,c (j) represents the target received power; PUCCH transmission bandwidth; PL b,f,c (q d ) represents the estimated road loss; Δ F_PUCCH (F) represents the power compensation amount associated with the PUCCH format; Δ TF,b,f,c (i) is the power compensation amount related to the PUCCH format and UCI bit count; g b,f,c (i,l) represents the closed-loop power control adjustment.

[0043] The closed-loop power control can be a TPC command in the DCI that schedules the PUCCH or a TPC command given in DCI 2_2 with TPC-PUCCH-RNTI scrambling.

[0044] TPC commands can be transmitted via DCI 2_2 / 2_3.

[0045] Among them, DCI 2_2 is used to transmit TPC commands for PUCCH or PUSCH.

[0046] DCI 2_2 uses TPC-PUSCH-RNTI or TPC-PUCCH-RNTI for CRC scrambling. DCI 2_2 transmits the following information:

[0047] block number 1, block number 2,…, block number N;

[0048] The parameters tpc-PUSCH or tpc-PUCCH are provided by higher-layer parameters and are used to determine the block number index of the uplink UL data for a cell. For each block, it includes the following:

[0049] Closed loop indicator — 0 or 1 bit;

[0050] For DCI 2_2 scrambled with TPC-PUSCH-RNTI, if the UE does not configure the higher-layer parameter twoPUSCH-PC-AdjustmentStates, the loop closure indicator is 0 bits. In this scenario, the UE assumes that each block in DCI 2_2 is 2 bits. Otherwise, the loop closure indicator is 1 bit. In this scenario, the UE assumes that each block in DCI 2_2 is 3 bits. Among them, the TPC command TPCcommand occupies 2 bits.

[0051] For DCI 2_2 scrambled by TPC-PUCCH-RNTI, if the UE does not configure the higher-layer parameter twoPUCCH-PC-AdjustmentStates, the loop closure indicator is 0 bits. In this scenario, the UE assumes that each block in DCI 2_2 is 2 bits. Otherwise, the loop closure indicator is 1 bit. In this scenario, the UE assumes that each block in DCI 2_2 is 3 bits. Among them, the TPC command TPCcommand occupies 2 bits.

[0052] DCI format 2-3 is used to transmit a set of Sounding Reference Signal (SRS) TPC commands for the UE. In addition to TPC commands, SRS requests can also be transmitted.

[0053] DCI 2_3 uses TPC-SRS-RNTI for CRC scrambling. DCI 2_3 transmits the following information:

[0054] block number 1, block number 2,…, block number N;

[0055] The starting position of a block is determined by the parameter startingBitOfFormat2-3 or startingBitOfFormat2-3SUL-v1530;

[0056] If the UE is configured with the higher-layer parameter srs-TPC-PDCCH-Group=typeA for an UL without PUCCH and PUSCH, or an UL on which the SRS power control is not tied with PUSCH power control, the higher-layer configuration assigns a block to the UE, which contains:

[0057] SRS Request – 0 or 2 bits;

[0058] TPC command number 1, TPC command number 2,..., TPC command number N, where each TPC command applies to a respective UL carrier provided by higherlayer parameter cc-IndexInOneCC-Set;

[0059] If the UE is configured with the higher-layer parameter srs-TPC-PDCCH-Group=typeB for an UL without PUCCH and PUSCH, or an UL on which the SRS power control is not tied with PUSCH power control, the higher-layer configuration assigns a block to the UE, where each block applies to one UL carrier, and each block contains:

[0060] SRS Request – 0 or 2 bits;

[0061] TPC command — 2 bits.

[0062] For the group common PDCCH that schedules the group common PDSCH, it schedules the PUCCH of a group of UEs. The PUCCH transmission power of different UEs may be different. Therefore, currently, the terminal cannot control the transmission power of the group common PDSCH HARQ-ACK PUCCH through the group common PDCCH, and cannot achieve precise control of the PUCCH transmission power. However, if power control is performed through DCI 2_2 / 2_3, it is also impossible to meet the requirement of power control for different priorities.

[0063] To address the aforementioned problems, embodiments of this application provide an uplink transmission power control method. The uplink transmission power control method provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0064] Figure 2 This is one of the flowcharts illustrating the uplink transmission power control method provided in the embodiments of this application, such as... Figure 2 As shown, the method includes the following steps:

[0065] Step 200: The terminal performs power control on the first uplink transmission based on the first downlink control information (DCI).

[0066] The first downlink control information (DCI) is either a unicast DCI or a group common DCI.

[0067] Optionally, the terminal performs power control on the first uplink transmission based on the unicast DCI. Since the unicast DCI is UE-specific, more flexible power control can be achieved.

[0068] In this embodiment of the application, the first uplink transmission is a PUCCH or PUSCH of HARQ-ACK feedback multicast / multicast downlink transmission.

[0069] It should be noted that multicast can also be understood as group public. For ease of description, the multicast mentioned below can be replaced with multicast or group public.

[0070] For ease of description, the PUCCH or PUSCH of HARQ-ACK for feedback multicast downlink transmission can be abbreviated as multicast HARQ-ACK PUCCH / PUSCH.

[0071] Multicast downlink transmission includes the Group Common Physical Downlink Shared Channel (PDSCH) and / or the Group Common Physical Downlink Control Channel (PDCCH).

[0072] It should be noted that feedback is equivalent to transmission, that is, the first uplink transmission can be understood as the PUCCH or PUSCH of the HARQ-ACK for transmitting multicast downlink transmission.

[0073] Optionally, the PUCCH or PUSCH of the HARQ-ACK for the feedback multicast downlink transmission includes at least one of the following:

[0074] The PUCCH or PUSCH of the HARQ-ACK corresponding to the feedback group common physical downlink shared channel PDSCH and / or the group common PDCCH;

[0075] Feedback Channel State Information (CSI) and Scheduling Request (SR) at least one of them, and the PUCCH or PUSCH of the HARQ-ACK corresponding to the Group Common PDSCH and / or Group Common PDCCH.

[0076] The terminal performs power control on the first uplink transmission based on the unicast DCI, that is, it performs power control on the first uplink transmission based on the content of the TPC command field of the unicast DCI, so that the terminal can achieve more precise uplink power control based on the unicast DCI in multicast scheduling.

[0077] Optionally, the terminal performs power control on the first uplink transmission based on the group common DCI.

[0078] It should be noted that since the PDCCH is used to transmit DCI, group common DCI can also be expressed as group common PDCCH. Because the group common DCI can include power control for multiple UEs, downlink resources for transmitting DCI can be saved.

[0079] In the prior art, when power control is performed through DCI 2_2 / 2_3, it is impossible to indicate the priority of uplink transmission. Therefore, in the embodiments of this application, a more precise power control can be achieved by indicating the uplink transmission priority in the group common DCI using a TPC command, thereby saving downlink resources for transmitting DCI.

[0080] In the embodiments of this application, the terminal performs power control on the first uplink transmission based on the unicast DCI or the group common DCI, which can achieve more precise power control and improve the flexibility of uplink power control.

[0081] Optionally, the unicast DCI is a DCI used to schedule a second uplink transmission, wherein the second uplink transmission is a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH) that feeds back a Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) for unicast downlink transmission, and the unicast DCI is a DCI determined according to at least one of the following:

[0082] The second uplink transmission is an uplink transmission that is transmitted in the same time unit as the first uplink transmission;

[0083] The second uplink transmission is the uplink transmission that is closest in time to the first uplink transmission;

[0084] The second uplink transmission is an uplink transmission that occurs prior to the first uplink transmission;

[0085] The second uplink transmission is PUCCH;

[0086] The priority of the second uplink transmission is the same as the priority of the first uplink transmission;

[0087] The ending symbol of the physical downlink control channel (PDCCH) is the latest, or the ending symbol of the PDCCH is the earliest, or the starting symbol of the PDCCH is the latest, or the starting symbol of the PDCCH is the earliest.

[0088] It should be noted that the second uplink transmission in this embodiment is the PUCCH or PUSCH of the HARQ-ACK feedback unicast downlink transmission. For ease of description, the PUCCH or PUSCH of the HARQ-ACK feedback unicast downlink transmission can be abbreviated as unicast HARQ-ACK PUCCH / PUSCH.

[0089] Understandably, a terminal can determine a DCI from one or more DCIs corresponding to unicast HARQ-ACK PUCCH / PUSCH as the DCI for controlling the transmission power of multicast HARQ-ACK PUCCH / PUSCH.

[0090] Here, unicast downlink transmission refers to unicast PDSCH and / or unicast PDCCH; group common HARQ-ACK PUCCH is the PUCCH that transmits group common PDSCH and / or PDCCH HARQ-ACK.

[0091] Optionally, the unicast DCI includes TPC commands.

[0092] In some optional embodiments, the unicast DCI is a DCI used to schedule a second uplink transmission, wherein the second uplink transmission is an uplink transmission transmitted in the same time unit as the first uplink transmission.

[0093] This can be understood as the terminal using the DCI (Digital Control Interface) for scheduling the second uplink transmission that is transmitted in the same time unit as the first uplink transmission as the DCI for power control of the first uplink transmission.

[0094] The time unit can be a symbol set, sub-slot, slot, subframe, half-frame, frame, etc.

[0095] Figure 3 This is one of the schematic diagrams illustrating the first uplink transmission and the second uplink transmission within the same time unit provided in this application embodiment. The M HARQ-ACK PUCCH is a PUCCH transmitting multicast PDSCH and / or multicast PDCCH HARQ-ACK, and its corresponding DCI is a group common DCI. The group common DCI does not contain a TPC field, making closed-loop power control of the M HARQ-ACK PUCCH impossible. Simultaneously, a U HARQ-ACK PUCCH is also in the same time unit as the M HARQ-ACK PUCCH. The U HARQ-ACK PUCCH is a PUCCH transmitting unicast PDSCH and / or unicast PDCCH HARQ-ACK, and its corresponding DCI is a unicast DCI containing a TPC command. Therefore, it is possible to use... Figure 3 The TPC in the DCI corresponding to the U HARQ-ACK PUCCH performs closed-loop power control on the MHARQ-ACK PUCCH. That is, the TPC in this DCI determines the PUCCH transmission power parameter g. b，f，c (i,l).

[0096] In some optional embodiments, the unicast DCI is a DCI used to schedule a second uplink transmission, wherein the second uplink transmission is transmitted in the same time unit as the first uplink transmission, and the priority of the second uplink transmission is the same as the priority of the first uplink transmission.

[0097] In some optional embodiments, where there are multiple DCIs for scheduling the second uplink transmission, and the second uplink transmission and the first uplink transmission are transmitted in the same time unit, the unicast DCI is a DCI determined according to at least one of the following:

[0098] The second uplink transmission is PUCCH;

[0099] The priority of the second uplink transmission is the same as the priority of the first uplink transmission;

[0100] The second uplink transmission has the shortest transmission time compared to the first uplink transmission;

[0101] The second uplink transmission is transmitted before the first uplink transmission;

[0102] The ending symbol of the physical downlink control channel (PDCCH) is the latest, or the ending symbol of the PDCCH is the earliest, or the starting symbol of the PDCCH is the latest, or the starting symbol of the PDCCH is the earliest.

[0103] It is understandable that when there are multiple DCIs corresponding to second uplink transmissions that are transmitted in the same time unit as the first uplink transmission, it is necessary to determine one of them as the DCI to control the transmission power of the first uplink transmission.

[0104] Optionally, if among the multiple DCIs corresponding to the second uplink transmissions transmitted in the same time unit as the first uplink transmission, there is a DCI that schedules the second uplink transmission as PUCCH, that is, the DCI that schedules is unicast HARQ-ACK PUCCH, then the DCI is determined as the unicast DCI to control the transmission power of the first uplink transmission.

[0105] Optionally, if among the multiple DCIs corresponding to second uplink transmissions transmitted in the same time unit as the first uplink transmission, there is a DCI whose priority for the second uplink transmission is the same as that for the first uplink transmission, then that DCI is determined as the unicast DCI to control the transmission power of the first uplink transmission.

[0106] Optionally, if among the multiple DCIs corresponding to second uplink transmissions transmitted in the same time unit as the first uplink transmission, there is a DCI whose second uplink transmission is closest in time to the first uplink transmission, then that DCI is determined as the unicast DCI to control the transmission power of the first uplink transmission.

[0107] Optionally, if among the multiple DCIs corresponding to second uplink transmissions transmitted in the same time unit as the first uplink transmission, there is a DCI whose second uplink transmission is scheduled before the first uplink transmission, then that DCI is determined as the unicast DCI to control the transmission power of the first uplink transmission.

[0108] Optionally, if among the multiple DCIs corresponding to the second uplink transmissions transmitted in the same time unit as the first uplink transmission, there is one DCI whose PDCCH has the latest end symbol, the earliest end symbol, the latest start symbol, or the earliest start symbol, then that DCI is determined as the unicast DCI to control the transmission power of the first uplink transmission.

[0109] It should be noted that the second uplink transmission is a PUCCH; the priority of the second uplink transmission is the same as that of the first uplink transmission; the second uplink transmission and the first uplink transmission are transmitted at the closest time; the second uplink transmission is transmitted before the first uplink transmission; the physical downlink control channel (PDCCH) where it is located has the latest end symbol, or the PDCCH where it is located has the earliest end symbol, or the PDCCH where it is located has the latest start symbol, or the PDCCH where it is located has the earliest start symbol; these four factors can be combined arbitrarily to determine the DCI that controls the transmission power of the first uplink transmission.

[0110] Figure 4 This is a second schematic diagram illustrating the first uplink transmission and the second uplink transmission within the same time unit, as provided in an embodiment of this application. Figure 4 As shown, there are two UHARQ-ACK PUCCHs in the same time unit as the first uplink transmission M HARQ-ACK PUCCH. The M HARQ-ACK PUCCH has low priority (LP). In the same time unit, there are both LP and high priority (HP) U HARQ-ACK PUCCHs. Therefore, closed-loop power control is performed on the LP M HARQ-ACK PUCCH based on the TPC in the DCI (last DCI) corresponding to the U HARQ-ACK PUCCH with the same priority as the M HARQ-ACK PUCCH. That is, the PUCCH transmission power parameter g is determined using the TPC in this DCI. b，f，c(i,l).

[0111] In some optional embodiments, the unicast DCI is used to schedule a second uplink transmission, wherein the second uplink transmission is the uplink transmission that is closest in time to the first uplink transmission.

[0112] The second uplink transmission that is closest to the first uplink transmission time can be the first uplink transmission before or after the first uplink transmission, or it can be understood as the second uplink transmission having the smallest distance between the starting symbol of the first uplink transmission and the first uplink transmission.

[0113] In some optional embodiments, the unicast DCI is used to schedule a second uplink transmission, wherein the second uplink transmission is the uplink transmission that is closest in time to the first uplink transmission and precedes the first uplink transmission.

[0114] In some optional embodiments, the unicast DCI is used to schedule a second uplink transmission, wherein the second uplink transmission is the uplink transmission that is closest in time to the first uplink transmission and precedes the first uplink transmission, and the priority of the second uplink transmission is the same as the priority of the first uplink transmission.

[0115] It should be noted that the priority of the second uplink transmission being the same as the priority of the first uplink transmission can mean that the priority index of the second uplink transmission is the same as the priority index of the first uplink transmission. For example, the priority index of the second uplink transmission is 0 and the priority index of the first uplink transmission is 0; or the priority index of the second uplink transmission is 1 and the priority index of the first uplink transmission is 1.

[0116] Optionally, when there are multiple DCIs for scheduling the second uplink transmission, and the second uplink transmission is closest in time to the first uplink transmission and precedes the first uplink transmission, the unicast DCI is a DCI determined according to at least one of the following:

[0117] The second uplink transmission is PUCCH;

[0118] The priority of the second uplink transmission is the same as the priority of the first uplink transmission;

[0119] The ending symbol of the physical downlink control channel (PDCCH) is the latest, or the ending symbol of the PDCCH is the earliest, or the starting symbol of the PDCCH is the latest, or the starting symbol of the PDCCH is the earliest.

[0120] Understandably, when there are multiple second uplink transmissions that are closest in time to the first uplink transmission (i.e., have the same and closest time distance) and precede the first uplink transmission, it is necessary to determine the DCI corresponding to one of the second uplink transmissions as the unicast DCI in order to control the transmission power of the first uplink transmission.

[0121] Optionally, if among the multiple DCIs corresponding to the second uplink transmissions that are closest in time to the first uplink transmission and precede the first uplink transmission, there exists a second uplink transmission scheduled by a DCI that is a PUCCH, then that DCI is determined as the unicast DCI to control the transmission power of the first uplink transmission.

[0122] Optionally, if among the multiple DCIs corresponding to the second uplink transmission that are closest in time to the first uplink transmission and precede the first uplink transmission, there exists a DCI whose priority for scheduling the second uplink transmission is the same as that for the first uplink transmission, then that DCI is determined as the unicast DCI to control the transmission power of the first uplink transmission.

[0123] Optionally, if among the multiple DCIs that are closest in time to the first uplink transmission and correspond to the second uplink transmission before the first uplink transmission, there is one DCI whose PDCCH has the latest end symbol, the earliest end symbol, the latest start symbol, or the earliest start symbol, then that DCI is determined as the unicast DCI to control the transmission power of the first uplink transmission.

[0124] It should be noted that the second uplink transmission is PUCCH; the priority of the second uplink transmission is the same as that of the first uplink transmission; the end symbol of the physical downlink control channel (PDCCH) is the latest, or the end symbol of the PDCCH is the earliest, or the start symbol of the PDCCH is the latest, or the start symbol of the PDCCH is the earliest; the above three items can be arbitrarily combined to determine the DCI that controls the transmission power of the first uplink transmission.

[0125] In this embodiment, the terminal can determine a DCI from one or more DCIs corresponding to unicast HARQ-ACK PUCCH / PUSCH as the DCI for controlling the transmission power of multicast HARQ-ACK PUCCH / PUSCH, which can achieve more precise power control and meet the uplink power control requirements of different UEs.

[0126] In some alternative embodiments, the unicast DCI is a DCI used for uplink transmission power control.

[0127] It should be noted that the DCI used for uplink transmission power control here refers to a DCI specifically designed for uplink transmission power control. This means that the DCI used for uplink transmission power control does not schedule PDSCH and has no corresponding PUCCH. For example, this DCI can be a DCI with a specific format or scrambled using a specific RNTI.

[0128] Unlike the previous embodiment where the unicast DCI was used to schedule the second uplink transmission, in the previous embodiment, when the unicast DCI performed power control on the multicast HARQ-ACK PUCCH based on the TPC in the unicast DCI, the unicast DCI scheduled the corresponding PUCCH. This cannot be implemented if there is no downlink unicast PDSCH / PDCCH requiring feedback, i.e., no U HARQ-ACK PUCCH. Therefore, the following implementation method can be considered:

[0129] The unicast DCI is the DCI that schedules PUSCH;

[0130] The unicast DCI is a downlink scheduling DCI, and the unicast DCI does not have a corresponding PDSCH.

[0131] For example, the DCI indicates the time slot of the scheduled PDSCH, the Time Domain Resource Assignment (TDRA), the PDSCH feedback timing indicator k1, and the HARQ-ACK feedback codebook indicator (the UE determines the HARQ-ACK priority based on the codebook). The UE can use this to determine the time unit and priority of the HARQ-ACK feedback (i.e., the HARQ-ACK codebook index). However, if the Frequency Domain Resource Assignment (FDRA) of the PDSCH indicated in the DCI is null or invalid (i.e., the frequency domain resources of the scheduled PDSCH are 0 or invalid), for example, FDRA is all 0s or all 1s, then it can be determined that this DCI does not schedule any PDSCH and does not require HARQ-ACK feedback. The UE only needs to perform power control on the multicast HARQ-ACK PUCCH in the same time unit (and with the same priority) according to the TPC indication of this DCI.

[0132] In this embodiment, the terminal can select a DCI that does not schedule PDSCH and is dedicated to uplink power control as the DCI for controlling the transmission power of multicast HARQ-ACK PUCCH / PUSCH, which can flexibly achieve more precise power control and meet the uplink power control requirements of different UEs.

[0133] Optionally, the group public DCI is used to indicate at least one of the following:

[0134] The priority of the uplink transmission channel corresponding to the Transmission Power Control (TPC) command;

[0135] Is the uplink transmission channel corresponding to the TPC command the same as the feedback channel corresponding to the multicast downlink transmission?

[0136] TPC commands for the feedback channel corresponding to unicast downlink transmission;

[0137] TPC commands for the feedback channel corresponding to multicast downlink transmission.

[0138] It is understandable that the terminal can also control the transmission power of multicast HARQ-ACK PUCCH / PUSCH according to the group common DCI, wherein the group common DCI is used to indicate the TPC command of the first uplink transmission with a specific priority, so that the terminal can perform power control on the first uplink transmission with a specific priority according to the group common DCI, thereby achieving more precise power control.

[0139] Among them, the feedback channel corresponding to the multicast downlink transmission is the PUCCH or PUSCH of the HARQ-ACK of the feedback multicast PDSCH and / or PDCCH.

[0140] The feedback channel corresponding to unicast downlink transmission is the PUCCH or PUSCH of HARQ-ACK for unicast PDSCH and / or PDCCH.

[0141] Optionally, closed-loop power control is performed on the first uplink transmission, such as a multicast HARQ-ACK PUCCH, via a group common DCI. This can be achieved, for example, via DCI 2_2 or DCI 2_3. Since multicast HARQ-ACK PUCCHs can have high and low priorities, the group common DCI indicates the priority of the corresponding uplink (UL) transmission when performing power control.

[0142] For example, if power control is performed via DCI 2_2, then DCI 2_2 can include the following:

[0143] block number 1, block number 2,…, block number N;

[0144] For each block, the following is included:

[0145] Closed loop indicator — 0 or 1 bit;

[0146] For DCI 2_2 scrambled with TPC-PUSCH-RNTI, if the UE does not configure the higher-layer parameter twoPUSCH-PC-AdjustmentStates, the loop closure indicator is 0 bits. In this scenario, the UE assumes that each block in DCI 2_2 is 3 bits. Otherwise, the loop closure indicator is 1 bit. In this scenario, the UE assumes that each block in DCI 2_2 is 4 bits.

[0147] For DCI 2_2 scrambled with TPC-PUCCH-RNTI, if the UE does not configure the higher-layer parameter twoPUCCH-PC-AdjustmentStates, i.e. the loop closure indicator is 0 bits, the UE assumes that each block in DCI 2_2 is 3 bits; otherwise, the loop closure indicator is 1 bit, and the UE assumes that each block in DCI 2_2 is 4 bits.

[0148] The TPC command occupies 2 bits, while the Priority index indicator occupies 1 bit and is used to indicate which priority PUCCH / PUSCH is subject to power control.

[0149] Alternatively, different blocks can be used to indicate the TPC of uplink transmission with different priorities.

[0150] For example, a base station configures a low-priority / high-priority UL corresponding to a cell cell using higher-layer parameters. Each block can contain:

[0151] Closed loop indicator — 0 or 1 bit;

[0152] For DCI 2_2 scrambled with TPC-PUSCH-RNTI, if the UE does not configure the higher-layer parameter twoPUSCH-PC-AdjustmentStates, the loop closure indicator is 0 bits. In this scenario, the UE assumes that each block in DCI 2_2 is 3 bits. Otherwise, the loop closure indicator is 1 bit. In this scenario, the UE assumes that each block in DCI 2_2 is 4 bits.

[0153] For DCI 2_2 scrambled by TPC-PUCCH-RNTI, if the UE does not configure the higher-layer parameter twoPUCCH-PC-AdjustmentStates, 0 bits, in this scenario, the UE assumes that each block in DCI 2_2 is 3 bits; otherwise, 1 bit, in this scenario, the UE assumes that each block in DCI 2_2 is 4 bits.

[0154] The TPC command occupies 2 bits.

[0155] Furthermore, since the uplink HARQ-ACK PUCCH includes U HARQ-ACK PUCCH (which also includes CSI PUCCH and / or SR PUCCH) and M HARQ-ACK PUCCH, the group common DCI 2_2 / 2_3 can also indicate whether the TPC command is for U HARQ-ACK PUCCH (which also includes CSI PUCCH and / or SR PUCCH) or M HARQ-ACK PUCCH. That is, the group common DCI indicates whether the uplink transmission channel corresponding to the TPC command is the feedback channel corresponding to the multicast downlink transmission.

[0156] For example, each block can also contain a Multicast indicator—0 or 1 bit;

[0157] That is, whether the base station is configured to perform different closed-loop power control for U HARQ-ACK PUCCH and M HARQ-ACK PUCCH. If configured, it contains 1 bit.

[0158] For example, when this bit is 1, it means that the TPC command is used for power control of M HARQ-ACK PUCCH; otherwise, it is applied to power control of U HARQ-ACK PUCCH.

[0159] Optionally, the group common DCI may also indicate the TPC command for the feedback channel corresponding to the unicast downlink transmission and / or the TPC command for the feedback channel corresponding to the multicast downlink transmission.

[0160] For example, different blocks can be used to indicate the TPC of U HARQ-ACK PUCCH and M HARQ-ACK PUCCH. For instance, the base station configures a block corresponding to one U HARQ-ACK PUCCH / M HARQ-ACK PUCCH per cell via higher-layer parameters. Each block can contain:

[0161] Closed loop indicator — 0 or 1 bit;

[0162] For DCI 2_2 scrambled with TPC-PUSCH-RNTI, if the UE does not configure the higher-layer parameter twoPUSCH-PC-AdjustmentStates, and the loop closure indicator is 0 bits, the UE assumes that each block in DCI 2_2 is 3 bits in this scenario; otherwise, the loop closure indicator is 1 bit, and the UE assumes that each block in DCI 2_2 is 4 bits in this scenario; among which, the TPC command TPCcommand occupies 2 bits.

[0163] For DCI 2_2 scrambled with TPC-PUCCH-RNTI, if the UE does not configure the higher-layer parameter twoPUCCH-PC-AdjustmentStates, i.e., the loop closure indication is 0 bits, the UE assumes that each block in DCI 2_2 is 3 bits; otherwise, the loop closure indication is 1 bit, and the UE assumes that each block in DCI 2_2 is 4 bits; among which, the TPC command TPCcommand occupies 2 bits.

[0164] In the embodiments of this application, by indicating at least one of the following in the group common DCI: the priority of the uplink transmission channel corresponding to the transmission power control (TPC) command; whether the uplink transmission channel corresponding to the TPC command is the feedback channel corresponding to the multicast downlink transmission; the TPC command for the feedback channel corresponding to the unicast downlink transmission; and the TPC command for the feedback channel corresponding to the multicast downlink transmission, the terminal can achieve more precise power control based on the group common DCI.

[0165] Optionally, the terminal performs power control on the first uplink transmission based on the first downlink control information (DCI), including:

[0166] When the unicast DCI is present, the terminal performs power control on the first uplink transmission according to the Transmission Power Control (TPC) command field of the unicast DCI; or,

[0167] In the absence of the unicast DCI, the terminal performs power control on the first uplink transmission according to the TPC command indicated by the group common DCI.

[0168] Understandably, power control of the first uplink transmission based on unicast DCI has a higher priority than power control of the first uplink transmission based on group common DCI.

[0169] Optionally, if a unicast DCI for scheduling a second uplink transmission that is transmitted in the same time unit as the first uplink transmission exists, or if a unicast DCI specifically for uplink transmission power control exists, the first uplink transmission is subjected to closed-loop power control or open-loop power control based on the transmission power control TPC command field of the unicast DCI.

[0170] Optionally, if the unicast DCI for scheduling the second uplink transmission that is transmitted in the same time unit as the first uplink transmission is absent, and if the unicast DCI specifically for uplink transmission power control is absent, the first uplink transmission is subjected to closed-loop power control or open-loop power control according to the TPC command indicated by the group common DCI.

[0171] Optionally, if the unicast DCI used for scheduling the second uplink transmission that is transmitted in the same time unit as the first uplink transmission does not exist, the unicast DCI specifically used for uplink transmission power control does not exist, and the group common DCI also does not exist, then the power control of the first uplink transmission is implemented according to the unicast DCI used for scheduling the second uplink transmission that is closest in time to the first uplink transmission.

[0172] In this embodiment, the terminal preferentially uses unicast DCI to implement power control of multicast HARQ-ACK PUCCH / PUSCH. Since unicast DCI is UE-specific, it can achieve more flexible power control. In the absence of unicast DCI, group common DCI is used to implement power control of multicast HARQ-ACK PUCCH / PUSCH. Since group common DCI can contain power control of multiple UEs, downlink resources for transmitting DCI can be saved.

[0173] Figure 5 This is a second schematic flowchart illustrating the uplink transmission power control method provided in an embodiment of this application. Figure 5 As shown, the method includes the following steps:

[0174] Step 500: The network-side device sends a first downlink control information (DCI) to the terminal. The first downlink control information (DCI) is used to instruct the terminal to control the power of the first uplink transmission.

[0175] The first downlink control information (DCI) is either a unicast DCI or a group common DCI.

[0176] Understandably, the network-side device instructs the terminal via the first DCI to perform power control on the first uplink transmission using a TPC.

[0177] Optionally, the first uplink transmission is a PUCCH or PUSCH for HARQ-ACK feedback multicast downlink transmission.

[0178] Optionally, the PUCCH or PUSCH of the HARQ-ACK for the feedback multicast downlink transmission includes at least one of the following:

[0179] The PUCCH or PUSCH of the HARQ-ACK corresponding to the feedback group common physical downlink shared channel PDSCH and / or the group common PDCCH;

[0180] Feedback Channel State Information (CSI) and Scheduling Request (SR) at least one of them, and the PUCCH or PUSCH of the HARQ-ACK corresponding to the Group Common PDSCH and / or Group Common PDCCH.

[0181] Since the embodiments of this application use network-side devices as the execution subject, the understanding of the relevant concepts in the embodiments of this application can be referred to the relevant descriptions in the embodiments using terminals as the execution subject, and will not be repeated here.

[0182] In this embodiment of the application, the network-side device instructs the terminal to control the power of the first uplink transmission through unicast DCI or group common DCI, which can achieve more precise power control.

[0183] Optionally, the unicast DCI is a DCI used to schedule a second uplink transmission, wherein the second uplink transmission is a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH) that feeds back a Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) for unicast downlink transmission, and the unicast DCI is a DCI determined according to at least one of the following:

[0184] The second uplink transmission is an uplink transmission that is transmitted in the same time unit as the first uplink transmission;

[0185] The second uplink transmission is the uplink transmission that is closest in time to the first uplink transmission;

[0186] The second uplink transmission is an uplink transmission that occurs prior to the first uplink transmission;

[0187] The second uplink transmission is PUCCH;

[0188] The priority of the second uplink transmission is the same as the priority of the first uplink transmission;

[0189] The ending symbol of the physical downlink control channel (PDCCH) is the latest, or the ending symbol of the PDCCH is the earliest, or the starting symbol of the PDCCH is the latest, or the starting symbol of the PDCCH is the earliest.

[0190] Since the embodiments of this application use network-side devices as the execution subject, the understanding of the relevant concepts in the embodiments of this application can be referred to the relevant descriptions in the embodiments using terminals as the execution subject, and will not be repeated here.

[0191] In this embodiment of the application, the network-side device instructs the terminal to control the power of the first uplink transmission through unicast DCI, which can achieve more precise power control and meet the uplink power control requirements of different UEs.

[0192] Optionally, the unicast DCI is a DCI used for uplink transmission power control.

[0193] Since the embodiments of this application use network-side devices as the execution subject, the understanding of the relevant concepts in the embodiments of this application can be referred to the relevant descriptions in the embodiments using terminals as the execution subject, and will not be repeated here.

[0194] In this embodiment of the application, the network-side device uses a DCI (Digital Control Interface) specifically designed for uplink power control to instruct the terminal to control the power of the first uplink transmission, thereby enabling more precise power control and meeting the uplink power control requirements of different UEs.

[0195] Optionally, the group public DCI is used to indicate at least one of the following:

[0196] The priority of the uplink transmission channel corresponding to the Transmission Power Control (TPC) command;

[0197] Is the uplink transmission channel corresponding to the TPC command the same as the feedback channel corresponding to the multicast downlink transmission?

[0198] TPC commands for the feedback channel corresponding to unicast downlink transmission;

[0199] TPC commands for the feedback channel corresponding to multicast downlink transmission.

[0200] Since the embodiments of this application use network-side devices as the execution subject, the understanding of the relevant concepts in the embodiments of this application can be referred to the relevant descriptions in the embodiments using terminals as the execution subject, and will not be repeated here.

[0201] In the embodiments of this application, by indicating at least one of the following in the group common DCI: the priority of the uplink transmission channel corresponding to the transmission power control (TPC) command; whether the uplink transmission channel corresponding to the TPC command is the feedback channel corresponding to the multicast downlink transmission; the TPC command for the feedback channel corresponding to the unicast downlink transmission; and the TPC command for the feedback channel corresponding to the multicast downlink transmission, the terminal can achieve more precise power control based on the group common DCI.

[0202] Optionally, the network-side device sends first downlink control information (DCI) to the terminal, including:

[0203] When the unicast DCI is present, the network-side device sends the unicast DCI to the terminal; or,

[0204] In the absence of the unicast DCI, the network-side device sends the group common DCI to the terminal.

[0205] Since the embodiments of this application use network-side devices as the execution subject, the understanding of the relevant concepts in the embodiments of this application can be referred to the relevant descriptions in the embodiments using terminals as the execution subject, and will not be repeated here.

[0206] In this embodiment, unicast DCI is sent to the terminal first, so that the terminal can perform power control on multicast HARQ-ACKPUCCH / PUSCH, which can achieve more precise uplink power control.

[0207] It should be noted that the uplink transmission power control method provided in this application embodiment can be executed by an uplink transmission power control device, or by a control module within the uplink transmission power control device for executing the uplink transmission power control method. This application embodiment uses the execution of the uplink transmission power control method by the uplink transmission power control device as an example to illustrate the uplink transmission power control device provided in this application embodiment.

[0208] Figure 6 This is one of the structural schematic diagrams of the uplink transmission power control device provided in the embodiments of this application, such as... Figure 6 As shown, the uplink transmission power control device 600 includes:

[0209] The power control module 601 is used to control the power of the first uplink transmission according to the first downlink control information (DCI).

[0210] The first downlink control information (DCI) is either a unicast DCI or a group common DCI.

[0211] In the embodiments of this application, power control of the first uplink transmission is performed according to the unicast DCI or the group common DCI, which can achieve more precise power control.

[0212] Optionally, the unicast DCI is a DCI used to schedule a second uplink transmission, wherein the second uplink transmission is a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH) that feeds back a Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) for unicast downlink transmission, and the unicast DCI is a DCI determined according to at least one of the following:

[0213] The second uplink transmission is an uplink transmission that is transmitted in the same time unit as the first uplink transmission;

[0214] The second uplink transmission is the uplink transmission that is closest in time to the first uplink transmission;

[0215] The second uplink transmission is an uplink transmission that occurs prior to the first uplink transmission;

[0216] The second uplink transmission is PUCCH;

[0217] The priority of the second uplink transmission is the same as the priority of the first uplink transmission;

[0218] The ending symbol of the physical downlink control channel (PDCCH) is the latest, or the ending symbol of the PDCCH is the earliest, or the starting symbol of the PDCCH is the latest, or the starting symbol of the PDCCH is the earliest.

[0219] In this embodiment of the application, by determining a DCI from one or more DCIs corresponding to unicast HARQ-ACK PUCCH / PUSCH as the DCI for controlling the transmission power of multicast HARQ-ACK PUCCH / PUSCH, more precise power control can be achieved, meeting the uplink power control requirements of different UEs.

[0220] Optionally, the unicast DCI is a DCI used for uplink transmission power control.

[0221] In this embodiment, by selecting a DCI that does not schedule PDSCH and is dedicated to uplink power control as the DCI for controlling the transmission power of multicast HARQ-ACK PUCCH / PUSCH, more precise power control can be flexibly achieved to meet the uplink power control requirements of different UEs.

[0222] Optionally, the group public DCI is used to indicate at least one of the following:

[0223] The priority of the uplink transmission channel corresponding to the Transmission Power Control (TPC) command;

[0224] Is the uplink transmission channel corresponding to the TPC command the same as the feedback channel corresponding to the multicast downlink transmission?

[0225] TPC commands for the feedback channel corresponding to unicast downlink transmission;

[0226] TPC commands for the feedback channel corresponding to multicast downlink transmission.

[0227] In the embodiments of this application, by indicating at least one of the following in the group common DCI: the priority of the uplink transmission channel corresponding to the transmission power control (TPC) command; whether the uplink transmission channel corresponding to the TPC command is the feedback channel corresponding to the multicast downlink transmission; the TPC command for the feedback channel corresponding to the unicast downlink transmission; and the TPC command for the feedback channel corresponding to the multicast downlink transmission, the terminal can achieve more precise power control based on the group common DCI.

[0228] Optionally, the power control module is used for:

[0229] In the presence of the unicast DCI, power control is applied to the first uplink transmission based on the Transmission Power Control (TPC) command field of the unicast DCI; or,

[0230] In the absence of the unicast DCI, power control is applied to the first uplink transmission according to the TPC command indicated by the group common DCI.

[0231] In this embodiment, unicast DCI is preferentially used to implement power control of multicast HARQ-ACK PUCCH / PUSCH. Since unicast DCI is UE-specific, it can achieve more flexible power control. In the absence of unicast DCI, group common DCI is used to implement power control of multicast HARQ-ACK PUCCH / PUSCH. Since group common DCI can contain power control of multiple UEs, downlink resources for transmitting DCI can be saved.

[0232] Optionally, the first uplink transmission is a PUCCH or PUSCH for HARQ-ACK feedback multicast downlink transmission.

[0233] Optionally, the PUCCH or PUSCH of the HARQ-ACK for the feedback multicast downlink transmission includes at least one of the following:

[0234] The PUCCH or PUSCH of the HARQ-ACK corresponding to the feedback group common physical downlink shared channel PDSCH and / or the group common PDCCH;

[0235] Feedback Channel State Information (CSI) and Scheduling Request (SR) at least one of them, and the PUCCH or PUSCH of the HARQ-ACK corresponding to the Group Common PDSCH and / or Group Common PDCCH.

[0236] The uplink transmission power control device in this application embodiment can be a device, a device or electronic device with an operating system, or a component, integrated circuit, or chip in a terminal. This device or electronic device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminals 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the type of terminal.

[0237] The uplink transmission power control device provided in this application embodiment can achieve... Figures 2 to 4 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0238] Figure 7 This is a second schematic diagram of the uplink transmission power control device provided in an embodiment of this application. Figure 7 As shown, the uplink transmission power control device 700 includes:

[0239] The first transmitting unit 701 is used to transmit first downlink control information (DCI) to the terminal, wherein the first downlink control information (DCI) is used to instruct the terminal to control the power of the first uplink transmission.

[0240] The first downlink control information (DCI) is either a unicast DCI or a group common DCI.

[0241] In the embodiments of this application, more precise power control can be achieved by instructing the terminal to control the power of the first uplink transmission through unicast DCI or group common DCI.

[0242] Optionally, the unicast DCI is a DCI used to schedule a second uplink transmission, wherein the second uplink transmission is a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH) that feeds back a Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) for unicast downlink transmission, and the unicast DCI is a DCI determined according to at least one of the following:

[0243] The second uplink transmission is an uplink transmission that is transmitted in the same time unit as the first uplink transmission;

[0244] The second uplink transmission is the uplink transmission that is closest in time to the first uplink transmission;

[0245] The second uplink transmission is an uplink transmission that occurs prior to the first uplink transmission;

[0246] The second uplink transmission is PUCCH;

[0247] The priority of the second uplink transmission is the same as the priority of the first uplink transmission;

[0248] The ending symbol of the physical downlink control channel (PDCCH) is the latest, or the ending symbol of the PDCCH is the earliest, or the starting symbol of the PDCCH is the latest, or the starting symbol of the PDCCH is the earliest.

[0249] In this embodiment of the application, by using unicast DCI to instruct the terminal to control the power of the first uplink transmission, more precise power control can be achieved, meeting the uplink power control requirements of different UEs.

[0250] Optionally, the unicast DCI is a DCI used for uplink transmission power control.

[0251] In this embodiment of the application, the DCI, which is specifically used for uplink power control, indicates the terminal to control the power of the first uplink transmission, which can flexibly achieve more precise power control and meet the uplink power control requirements of different UEs.

[0252] Optionally, the group public DCI is used to indicate at least one of the following:

[0253] The priority of the uplink transmission channel corresponding to the Transmission Power Control (TPC) command;

[0254] Is the uplink transmission channel corresponding to the TPC command the same as the feedback channel corresponding to the multicast downlink transmission?

[0255] TPC commands for the feedback channel corresponding to unicast downlink transmission;

[0256] TPC commands for the feedback channel corresponding to multicast downlink transmission.

[0257] In the embodiments of this application, by indicating at least one of the following in the group common DCI: the priority of the uplink transmission channel corresponding to the transmission power control (TPC) command; whether the uplink transmission channel corresponding to the TPC command is the feedback channel corresponding to the multicast downlink transmission; the TPC command for the feedback channel corresponding to the unicast downlink transmission; and the TPC command for the feedback channel corresponding to the multicast downlink transmission, the terminal can achieve more precise power control based on the group common DCI.

[0258] Optionally, the first transmitting unit is configured to:

[0259] If the unicast DCI is present, the unicast DCI is sent to the terminal; or,

[0260] If the unicast DCI is not present, the group public DCI is sent to the terminal.

[0261] In this embodiment, unicast DCI is sent to the terminal first, so that the terminal can perform power control on multicast HARQ-ACKPUCCH / PUSCH, which can achieve more precise uplink power control.

[0262] Optionally, the first uplink transmission is a PUCCH or PUSCH for HARQ-ACK feedback multicast downlink transmission.

[0263] Optionally, the PUCCH or PUSCH of the HARQ-ACK for the feedback multicast downlink transmission includes at least one of the following:

[0264] The PUCCH or PUSCH of the HARQ-ACK corresponding to the feedback group common physical downlink shared channel PDSCH and / or the group common PDCCH;

[0265] Feedback Channel State Information (CSI) and Scheduling Request (SR) at least one of them, and the PUCCH or PUSCH of the HARQ-ACK corresponding to the Group Common PDSCH and / or Group Common PDCCH.

[0266] The uplink transmission power control device in this application embodiment can be a device, a device or electronic device with an operating system, or a component, integrated circuit, or chip in a terminal. This device or electronic device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminals 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the type of terminal.

[0267] The uplink transmission power control device provided in this application embodiment can achieve... Figure 5 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0268] Optionally, such as Figure 8 As shown, this application embodiment also provides a communication device 800, including a processor 801, a memory 802, and a program or instructions stored in the memory 802 and executable on the processor 801. For example, when the communication device 800 is a terminal, the program or instructions executed by the processor 801 implement the various processes of the above-described uplink transmission power control method embodiment and achieve the same technical effect. When the communication device 800 is a network-side device, the program or instructions executed by the processor 801 implement the various processes of the above-described uplink transmission power control method embodiment and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0269] This application embodiment also provides a terminal, including a processor and a communication interface. The processor is used to perform power control on a first uplink transmission according to a first downlink control information (DCI); wherein the first downlink control information (DCI) is a unicast DCI or a group common DCI. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above method embodiments can be applied to this terminal embodiment and achieve the same technical effect. Specifically, Figure 9 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0270] The terminal 900 includes, but is not limited to, at least some of the following components: radio frequency unit 901, network module 902, audio output unit 903, input unit 904, sensor 905, display unit 906, user input unit 907, interface unit 908, memory 909, and processor 910.

[0271] Those skilled in the art will understand that the terminal 900 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 910 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 9 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0272] It should be understood that, in this embodiment, the input unit 904 may include a graphics processing unit (GPU) 9041 and a microphone 9042. The GPU 9041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 906 may include a display panel 9061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 907 includes a touch panel 9071 and other input devices 9072. The touch panel 9071 is also called a touch screen. The touch panel 9071 may include a touch detection device and a touch controller. Other input devices 9072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0273] In this embodiment, the radio frequency unit 901 receives downlink data from the network-side device and processes it for the processor 910; additionally, it sends uplink data to the network-side device. Typically, the radio frequency unit 901 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0274] The memory 909 can be used to store software programs or instructions and various data. The memory 909 may primarily include a program or instruction storage area and a data storage area. The program or instruction storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 909 may include high-speed random access memory and non-volatile memory, which may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. For example, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0275] Processor 910 may include one or more processing units; optionally, processor 910 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications or instructions, and the modem processor mainly handles wireless communication, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 910.

[0276] The processor 910 is used to perform power control on the first uplink transmission based on the first downlink control information (DCI).

[0277] The first downlink control information (DCI) is either a unicast DCI or a group common DCI.

[0278] In this embodiment, the terminal performs power control on the first uplink transmission based on unicast DCI or group common DCI, which can achieve more precise power control.

[0279] Optionally, the unicast DCI is a DCI used to schedule a second uplink transmission, wherein the second uplink transmission is a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH) that feeds back a Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) for unicast downlink transmission, and the unicast DCI is a DCI determined according to at least one of the following:

[0280] The second uplink transmission is an uplink transmission that is transmitted in the same time unit as the first uplink transmission;

[0281] The second uplink transmission is the uplink transmission that is closest in time to the first uplink transmission;

[0282] The second uplink transmission is an uplink transmission that occurs prior to the first uplink transmission;

[0283] The second uplink transmission is PUCCH;

[0284] The priority of the second uplink transmission is the same as the priority of the first uplink transmission;

[0285] The ending symbol of the physical downlink control channel (PDCCH) is the latest, or the ending symbol of the PDCCH is the earliest, or the starting symbol of the PDCCH is the latest, or the starting symbol of the PDCCH is the earliest.

[0286] In this embodiment, the terminal can determine a DCI from one or more DCIs corresponding to unicast HARQ-ACK PUCCH / PUSCH as the DCI for controlling the transmission power of multicast HARQ-ACK PUCCH / PUSCH, which can achieve more precise power control and meet the uplink power control requirements of different UEs.

[0287] Optionally, the unicast DCI is a DCI used for uplink transmission power control.

[0288] In this embodiment, the terminal can select a DCI that does not schedule PDSCH and is dedicated to uplink power control as the DCI for controlling the transmission power of multicast HARQ-ACK PUCCH / PUSCH, which can flexibly achieve more precise power control and meet the uplink power control requirements of different UEs.

[0289] Optionally, the group public DCI is used to indicate at least one of the following:

[0290] The priority of the uplink transmission channel corresponding to the Transmission Power Control (TPC) command;

[0291] Is the uplink transmission channel corresponding to the TPC command the same as the feedback channel corresponding to the multicast downlink transmission?

[0292] TPC commands for the feedback channel corresponding to unicast downlink transmission;

[0293] TPC commands for the feedback channel corresponding to multicast downlink transmission.

[0294] In the embodiments of this application, by indicating at least one of the following in the group common DCI: the priority of the uplink transmission channel corresponding to the transmission power control (TPC) command; whether the uplink transmission channel corresponding to the TPC command is the feedback channel corresponding to the multicast downlink transmission; the TPC command for the feedback channel corresponding to the unicast downlink transmission; and the TPC command for the feedback channel corresponding to the multicast downlink transmission, the terminal can achieve more precise power control based on the group common DCI.

[0295] Optionally, the step of power control of the first uplink transmission based on the first downlink control information (DCI) includes:

[0296] In the presence of the unicast DCI, power control is applied to the first uplink transmission based on the Transmission Power Control (TPC) command field of the unicast DCI; or,

[0297] In the absence of the unicast DCI, power control is applied to the first uplink transmission according to the TPC command indicated by the group common DCI.

[0298] The first uplink transmission is a PUCCH or PUSCH of HARQ-ACK for feedback multicast downlink transmission.

[0299] In this embodiment, the terminal preferentially uses unicast DCI to implement power control of multicast HARQ-ACK PUCCH / PUSCH. Since unicast DCI is UE-specific, it can achieve more flexible power control. In the absence of unicast DCI, group common DCI is used to implement power control of multicast HARQ-ACK PUCCH / PUSCH. Since group common DCI can contain power control of multiple UEs, downlink resources for transmitting DCI can be saved.

[0300] Optionally, the PUCCH or PUSCH of the HARQ-ACK for the feedback multicast downlink transmission includes at least one of the following:

[0301] The PUCCH or PUSCH of the HARQ-ACK corresponding to the feedback group common physical downlink shared channel PDSCH and / or the group common PDCCH;

[0302] Feedback Channel State Information (CSI) and Scheduling Request (SR) at least one of them, and the PUCCH or PUSCH of the HARQ-ACK corresponding to the Group Common PDSCH and / or Group Common PDCCH.

[0303] This application also provides a network-side device, including a processor and a communication interface. The communication interface is used to send first downlink control information (DCI) to a terminal. The first downlink control information (DCI) is used to instruct the terminal to control the power of a first uplink transmission. The first downlink control information (DCI) is either a unicast DCI or a group common DCI. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above method embodiments can be applied to this network-side device embodiment and achieve the same technical effects.

[0304] Specifically, embodiments of this application also provide a network-side device. For example... Figure 10As shown, the network-side device 1000 includes: an antenna 1001, a radio frequency (RF) device 1002, and a baseband device 1003. The antenna 1001 is connected to the RF device 1002. In the uplink direction, the RF device 1002 receives information through the antenna 1001 and transmits the received information to the baseband device 1003 for processing. In the downlink direction, the baseband device 1003 processes the information to be transmitted and sends it to the RF device 1002. The RF device 1002 processes the received information and transmits it through the antenna 1001.

[0305] The aforementioned frequency band processing device can be located in the baseband device 1003. The method executed by the network-side device in the above embodiments can be implemented in the baseband device 1003, which includes a processor 1004 and a memory 1005.

[0306] The baseband device 1003 may include, for example, at least one baseband board on which multiple chips are disposed, such as... Figure 10 As shown, one of the chips, for example, is a processor 1004, which is connected to a memory 1005 to call the program in the memory 1005 and execute the network device operation shown in the above method embodiment.

[0307] The baseband device 1003 may also include a network interface 1006 for exchanging information with the radio frequency device 1002, such as a common public radio interface (CPRI).

[0308] Specifically, the network-side device in this embodiment of the invention further includes: instructions or programs stored in memory 1005 and executable on processor 1004, wherein processor 1004 calls the instructions or programs in memory 1005 to execute... Figure 7 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0309] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described uplink transmission power control method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0310] The processor mentioned above is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0311] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described uplink transmission power control method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0312] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0313] This application also provides a computer program / program product, which is stored in a non-transient storage medium. The program / program product is executed by at least one processor to implement the various processes of the above-described system message reporting method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0314] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0315] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0316] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An uplink transmission power control method, characterized by, include: The terminal performs power control on the first uplink transmission according to the first downlink control information (DCI). The first uplink transmission is the first uplink channel of the hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback multicast downlink transmission. The first uplink channel is either the physical uplink control channel (PUCCH) or the physical uplink shared channel (PUSCH). Wherein, the first downlink control information DCI is a unicast DCI; The unicast DCI is a DCI used to schedule the second uplink transmission, wherein the second uplink transmission is a second uplink channel that feeds back HARQ-ACK for the unicast downlink transmission, the second uplink channel is a physical uplink control channel PUCCH or a physical uplink shared channel PUSCH, and the unicast DCI is a DCI determined according to at least one of the following: The second uplink transmission is an uplink transmission that is transmitted in the same time unit as the first uplink transmission; The second uplink transmission is the uplink transmission that is closest in time to the first uplink transmission; The second uplink transmission is an uplink transmission that occurs prior to the first uplink transmission; The second uplink transmission is PUCCH; The priority of the second uplink transmission is the same as that of the first uplink transmission.

2. The uplink transmission power control method according to claim 1, characterized in that, In the case where there are multiple second uplink transmissions transmitted in the same time unit as the first uplink transmission, the method for determining the unicast DCI from the unicast DCIs corresponding to the multiple second uplink transmissions further includes: Choose the unicast DCI with the latest end symbol of the physical downlink control channel (PDCCH), or... Choose the unicast DCI with the earliest end symbol in the PDCCH, or... Choose the unicast DCI with the latest start symbol in the PDCCH, or... Select the earliest unicast DCI from the start symbol of the PDCCH.

3. The uplink transmission power control method according to claim 1, characterized in that, The unicast DCI is a DCI used for uplink transmission power control.

4. The uplink transmission power control method according to claim 1, characterized in that, The first downlink control information (DCI) also includes a group common DCI, which indicates at least one of the following: The priority of the uplink transmission channel corresponding to the Transmission Power Control (TPC) command; Is the uplink transmission channel corresponding to the TPC command the same as the feedback channel corresponding to the multicast downlink transmission? TPC commands for the feedback channel corresponding to unicast downlink transmission; TPC commands for the feedback channel corresponding to multicast downlink transmission.

5. The uplink transmission power control method according to any one of claims 1-4, characterized in that, The terminal performs power control on the first uplink transmission based on the first downlink control information (DCI), including: When the unicast DCI is present, the terminal performs power control on the first uplink transmission according to the Transmission Power Control (TPC) command field of the unicast DCI; or, In the absence of the unicast DCI, the terminal performs power control on the first uplink transmission according to the TPC command indicated by the group common DCI.

6. The uplink transmission power control method according to claim 1, characterized in that, The HARQ-ACK for the feedback multicast downlink transmission includes at least one of the following: HARQ-ACK corresponding to the group common physical downlink shared channel PDSCH and / or the group common PDCCH; The combination of Channel State Information (CSI) and / or Scheduling Request (SR) with HARQ-ACK corresponding to Group Common PDSCH and / or Group Common PDCCH; The HARQ-ACK is transmitted via the Physical Uplink Control Channel (PUCCH) or the Physical Uplink Shared Channel (PUSCH).

7. An uplink transmission power control method, characterized in that, include: The network-side device sends a first downlink control information (DCI) to the terminal. The first downlink control information (DCI) is used to instruct the terminal to control the power of the first uplink transmission. The first uplink transmission is a first uplink channel of hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback multicast downlink transmission. The first uplink channel is either a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH). Wherein, the first downlink control information DCI is a unicast DCI; The unicast DCI is a DCI used to schedule the second uplink transmission, wherein the second uplink transmission is a second uplink channel that feeds back the hybrid automatic repeat request acknowledgment (HARQ-ACK) of the unicast downlink transmission, the second uplink channel is a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH), and the unicast DCI is a DCI determined according to at least one of the following: The second uplink transmission is an uplink transmission that is transmitted in the same time unit as the first uplink transmission; The second uplink transmission is the uplink transmission that is closest in time to the first uplink transmission; The second uplink transmission is an uplink transmission that occurs prior to the first uplink transmission; The second uplink transmission is PUCCH; The priority of the second uplink transmission is the same as that of the first uplink transmission.

8. The uplink transmission power control method according to claim 7, characterized in that, In the case where there are multiple second uplink transmissions transmitted in the same time unit as the first uplink transmission, the method for determining the unicast DCI from the unicast DCIs corresponding to the multiple second uplink transmissions further includes: Choose the unicast DCI with the latest end symbol of the physical downlink control channel (PDCCH), or... Choose the unicast DCI with the earliest end symbol in the PDCCH, or... Choose the unicast DCI with the latest start symbol in the PDCCH, or... Select the earliest unicast DCI from the start symbol of the PDCCH.

9. The uplink transmission power control method according to claim 7, characterized in that, The unicast DCI is a DCI used for uplink transmission power control.

10. The uplink transmission power control method according to claim 7, characterized in that, The first downlink control information (DCI) also includes a group common DCI, which indicates at least one of the following: The priority of the uplink transmission channel corresponding to the Transmission Power Control (TPC) command; Is the uplink transmission channel corresponding to the TPC command the same as the feedback channel corresponding to the multicast downlink transmission? TPC commands for the feedback channel corresponding to unicast downlink transmission; TPC commands for the feedback channel corresponding to multicast downlink transmission.

11. The uplink transmission power control method according to any one of claims 7-10, characterized in that, The network-side device sends first downlink control information (DCI) to the terminal, including: When the unicast DCI is present, the network-side device sends the unicast DCI to the terminal; or, In the absence of the unicast DCI, the network-side device sends a group common DCI to the terminal.

12. The uplink transmission power control method according to claim 7, characterized in that, The HARQ-ACK for the feedback multicast downlink transmission includes at least one of the following: HARQ-ACK corresponding to the group common physical downlink shared channel PDSCH and / or the group common PDCCH; The combination of Channel State Information (CSI) and / or Scheduling Request (SR) with HARQ-ACK corresponding to Group Common PDSCH and / or Group Common PDCCH; The HARQ-ACK is transmitted via the Physical Uplink Control Channel (PUCCH) or the Physical Uplink Shared Channel (PUSCH).

13. An uplink transmission power control device, characterized in that, include: The power control module is used to perform power control on the first uplink transmission according to the first downlink control information (DCI), wherein the first uplink transmission is the first uplink channel of the hybrid automatic repeat request-acknowledge (HARQ-ACK) feedback multicast downlink transmission, and the first uplink channel is either the physical uplink control channel (PUCCH) or the physical uplink shared channel (PUSCH). Wherein, the first downlink control information DCI is a unicast DCI; The unicast DCI is a DCI used to schedule the second uplink transmission, wherein the second uplink transmission is a second uplink channel that feeds back HARQ-ACK for the unicast downlink transmission, the second uplink channel is a physical uplink control channel PUCCH or a physical uplink shared channel PUSCH, and the unicast DCI is a DCI determined according to at least one of the following: The second uplink transmission is an uplink transmission that is transmitted in the same time unit as the first uplink transmission; The second uplink transmission is the uplink transmission that is closest in time to the first uplink transmission; The second uplink transmission is an uplink transmission that occurs prior to the first uplink transmission; The second uplink transmission is PUCCH; The priority of the second uplink transmission is the same as that of the first uplink transmission.

14. The uplink transmission power control device according to claim 13, characterized in that, In the case where there are multiple second uplink transmissions transmitted in the same time unit as the first uplink transmission, the method for determining the unicast DCI from the unicast DCIs corresponding to the multiple second uplink transmissions further includes: Choose the unicast DCI with the latest end symbol of the physical downlink control channel (PDCCH), or... Choose the unicast DCI with the earliest end symbol in the PDCCH, or... Choose the unicast DCI with the latest start symbol in the PDCCH, or... Select the earliest unicast DCI from the start symbol of the PDCCH.

15. The uplink transmission power control device according to claim 13, characterized in that, The unicast DCI is a DCI used for uplink transmission power control.

16. The uplink transmission power control device according to claim 13, characterized in that, The first downlink control information (DCI) also includes a group common DCI, which indicates at least one of the following: The priority of the uplink transmission channel corresponding to the Transmission Power Control (TPC) command; Is the uplink transmission channel corresponding to the TPC command the same as the feedback channel corresponding to the multicast downlink transmission? TPC commands for the feedback channel corresponding to unicast downlink transmission; TPC commands for the feedback channel corresponding to multicast downlink transmission.

17. The uplink transmission power control device according to any one of claims 13-16, characterized in that, The power control module is used for: In the presence of the unicast DCI, power control is applied to the first uplink transmission according to the Transmission Power Control (TPC) command field of the unicast DCI. or, In the absence of the unicast DCI, power control is applied to the first uplink transmission according to the TPC command indicated by the group common DCI.

18. The uplink transmission power control device according to claim 13, characterized in that, The HARQ-ACK for the feedback multicast downlink transmission includes at least one of the following: The PUCCH or PUSCH of the HARQ-ACK corresponding to the group common physical downlink shared channel PDSCH and / or the group common PDCCH; The combination of Channel State Information (CSI) and / or Scheduling Request (SR) with HARQ-ACK corresponding to Group Common PDSCH and / or Group Common PDCCH; The HARQ-ACK is transmitted via the Physical Uplink Control Channel (PUCCH) or the Physical Uplink Shared Channel (PUSCH).

19. An uplink transmission power control device, characterized in that, include: The first transmitting unit is configured to transmit a first downlink control information (DCI) to the terminal. The first downlink control information (DCI) is used to instruct the terminal to control the power of a first uplink transmission. The first uplink transmission is a first uplink channel of a hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback multicast downlink transmission. The first uplink channel is either a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH). Wherein, the first downlink control information DCI is a unicast DCI; The unicast DCI is a DCI used to schedule the second uplink transmission, wherein the second uplink transmission is a second uplink channel that feeds back HARQ-ACK for the unicast downlink transmission, the second uplink channel is a physical uplink control channel PUCCH or a physical uplink shared channel PUSCH, and the unicast DCI is a DCI determined according to at least one of the following: The second uplink transmission is an uplink transmission that is transmitted in the same time unit as the first uplink transmission; The second uplink transmission is the uplink transmission that is closest in time to the first uplink transmission; The second uplink transmission is an uplink transmission that occurs prior to the first uplink transmission; The second uplink transmission is PUCCH; The priority of the second uplink transmission is the same as that of the first uplink transmission.

20. The uplink transmission power control device according to claim 19, characterized in that, In the case where there are multiple second uplink transmissions transmitted in the same time unit as the first uplink transmission, the method for determining the unicast DCI from the unicast DCIs corresponding to the multiple second uplink transmissions further includes: Choose the unicast DCI with the latest end symbol of the physical downlink control channel (PDCCH), or... Choose the unicast DCI with the earliest end symbol in the PDCCH, or... Choose the unicast DCI with the latest start symbol in the PDCCH, or... Select the earliest unicast DCI from the start symbol of the PDCCH.

21. The uplink transmission power control device according to claim 19, characterized in that, The unicast DCI is a DCI used for uplink transmission power control.

22. The uplink transmission power control device according to claim 19, characterized in that, The first downlink control information (DCI) also includes a group common DCI, which indicates at least one of the following: The priority of the uplink transmission channel corresponding to the Transmission Power Control (TPC) command; Is the uplink transmission channel corresponding to the TPC command the same as the feedback channel corresponding to the multicast downlink transmission? TPC commands for the feedback channel corresponding to unicast downlink transmission; TPC commands for the feedback channel corresponding to multicast downlink transmission.

23. The uplink transmission power control device according to any one of claims 19-22, characterized in that, The first transmitting unit is configured to: If the unicast DCI is present, the unicast DCI is sent to the terminal; or, If the unicast DCI is not present, a group common DCI is sent to the terminal.

24. The uplink transmission power control device according to claim 19, characterized in that, The PUCCH or PUSCH of the HARQ-ACK for the feedback multicast downlink transmission includes at least one of the following: The PUCCH or PUSCH of the HARQ-ACK corresponding to the group common physical downlink shared channel PDSCH and / or the group common PDCCH; The combination of Channel State Information (CSI) and / or Scheduling Request (SR) with HARQ-ACK corresponding to Group Common PDSCH and / or Group Common PDCCH; The HARQ-ACK is transmitted via the Physical Uplink Control Channel (PUCCH) or the Physical Uplink Shared Channel (PUSCH).

25. A terminal, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the uplink transmission power control method as described in any one of claims 1 to 6.

26. A network-side device, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the uplink transmission power control method as described in any one of claims 7 to 12.

27. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the uplink transmission power control method as described in any one of claims 1 to 6, or implement the steps of the uplink transmission power control method as described in any one of claims 7 to 12.

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