A method and apparatus in a user equipment and a base station for use in wireless communication

Abstract

The present invention discloses a method and apparatus in a user equipment and a base station for wireless communication. The user equipment first receives K downlink wireless signals, and then transmits a first wireless signal. The transmission power of the first wireless signal is a first power. The K downlink wireless signals are respectively associated with K synchronization sequences. The downlink wireless signal includes at least one of {downlink reference signal, synchronization signal}, or the downlink wireless signal includes downlink signaling. The K downlink wireless signals are used to determine the first power. Any two of the K synchronization sequences are different. The K is a positive integer greater than 1. By establishing a connection between the first power and the K downlink wireless signals, the present invention ensures that the transmission of the user equipment does not cause strong interference to adjacent cells, thereby improving system performance and spectral efficiency.

Description

[0001] This application is a divisional application of the following original application:

[0002] -- Filing date of the original application: April 13, 2017

[0003] -- Application number of the original application: 201780087727.X

[0004] -- Invention title of the original application: A method and apparatus in a user equipment and a base station for use in wireless communication Technical Field

[0005] The present invention relates to a transmission method and apparatus in wireless communication, and particularly to a transmission method and apparatus for use in transmission power control. Background Art

[0006] In 3GPP (3rd Generation Partner Project) R12, D2D (Device to Device) communication was established and discussed. The essential feature of D2D is to allow data transmission between UEs. In traditional D2D communication, considering the robustness of D2D transmission and the interference to Cellular communication, the transmission power on the Sidelink is only related to the path loss between the transmitting end of the D2D transmission and the serving cell.

[0007] In the 3GPP discussions on 5G, an SI (Study Item) on Enhanced Support for Aerial Vehicles has been established and discussed in 3GPP. One feature of aerial communication is that the transmission of an aerial terminal device can be detected by multiple base stations, and the relevant methods for transmission power control need to be reconsidered. Summary of the Invention

[0008] An important feature of aerial communication is that when an aerial terminal reaches a certain altitude, there are often LOS (Line of Sight) paths between it and ground terminals and base stations. Due to the LOS paths, when an aerial terminal in the target cell communicates with the corresponding ground terminal of the aerial terminal or the target cell, ground terminals in adjacent cells and the adjacent cells can all receive signals from the aerial terminal, thereby causing relatively large inter-cell interference.

[0009] In the existing LTE D2D application scenarios, the TPC (Transmission Power Control) of the D2D transmitter is related to the path loss between the D2D transmitter and the base station. The above TPC method is to ensure that the transmission of the Sidelink does not interfere with the Cellular Link. The communication between the aerial terminal and the ground terminal in the aerial communication will largely inherit the transmission protocol of the LTE D2D communication. However, the D2D TPC method will obviously bring greater inter-cell interference.

[0010] In view of the above problems, the present invention provides a solution. It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily. For example, the embodiments and features in the user equipment of the present application can be applied to the base station, and vice versa.

[0011] The present invention discloses a method used in a user equipment for wireless communication, which includes the following steps:

[0012] - Step A. Receive K downlink wireless signals;

[0013] - Step B. Transmit a first wireless signal.

[0014] Wherein, the transmission power of the first wireless signal is a first power. The K downlink wireless signals are respectively associated with K synchronization sequences. The downlink wireless signal includes at least one of {downlink reference signal, synchronization signal}, or the downlink wireless signal includes downlink signaling. The K downlink wireless signals are used to determine the first power. Any two of the K synchronization sequences are different. K is a positive integer greater than 1.

[0015] As an embodiment, a characteristic of the above method is that when the K downlink wireless signals respectively correspond to K different cells, the determination of the first power is based on not generating adjacent cell interference to the uplink reception of the K different cells. Wherein, the K different cells are adjacent cells of the serving cell to which the user equipment is camped.

[0016] As an embodiment, another characteristic of the above method is that when the K downlink wireless signals respectively correspond to K different ground terminals, the determination of the first power is based on not generating adjacent cell interference to the reception of the K different ground terminals. Wherein, the K different ground terminals are ground terminals in the adjacent cells of the serving cell to which the user equipment is camped.

[0017] As an embodiment, the advantage of the above method is that when determining the transmission power, the user equipment not only takes into account the reception of the ground user at the opposite end of the user equipment or the reception of the serving base station of the user equipment, but also takes into account the interference to adjacent cells or ground users in adjacent cells. This method avoids the interference of the transmission of the air terminal to the cells or ground terminals in multiple ground areas, thereby improving the transmission rate and system spectral efficiency.

[0018] As an embodiment, the first wireless signal is transmitted on the PSSCH (Physical Sidelink Shared Channel).

[0019] As an embodiment, the first wireless signal is transmitted on the PSCCH (Physical Sidelink Control Channel).

[0020] As an embodiment, the first wireless signal is transmitted on the PSDCH (Physical Sidelink Discovery Channel).

[0021] As an embodiment, the first wireless signal is transmitted on the PSBCH (Physical Sidelink Broadcasting Channel).

[0022] As an embodiment, the first wireless signal is transmitted on the PUSCH (Physical Uplink Shared Channel).

[0023] As an embodiment, the first wireless signal is transmitted on the PUCCH (Physical Uplink Control Channel).

[0024] As an embodiment, the first wireless signal is transmitted on the N-PUSCH (New Radio PUSCH).

[0025] As an embodiment, the first wireless signal is transmitted on the N-PUCCH (New Radio PUCCH).

[0026] As an embodiment, the first wireless signal includes a DRS (Discovery Reference Signal).

[0027] As an example, the first wireless signal includes at least one of {PSSS (Primary Sidelink Synchronization Signal), SSSS (Secondary Sidelink Synchronization Signal)}.

[0028] As an example, the first wireless signal includes SRS (Sounding Reference Signal).

[0029] As an example, the first wireless signal includes uplink DMRS (Demodulation Reference Signal).

[0030] As an example, the target receiver of the first wireless signal includes at least the former of {terminal, base station}.

[0031] As a sub - example of this example, the terminal is a terminal used for Terrestrial Radio Access.

[0032] As an example, among the K downlink wireless signals, there are a first downlink wireless signal and a second downlink wireless signal. The first downlink wireless signal includes the downlink signaling among {downlink reference signal, synchronization signal, downlink signaling}, and the second downlink wireless signal includes the downlink reference signal among {downlink reference signal, synchronization signal, downlink signaling}.

[0033] As an example, the downlink reference signal includes at least one of {CRS (Common Reference Signal), MRS (Mobility Reference Signal), PTRS (Phase Tracking Reference Signal), CSI - RS (Channel State Information - Reference Signal), DMRS, DRS, NRS (NarrowBand Reference Signal)}.

[0034] As an embodiment, the synchronization signal includes at least one of {PSS (Primary Synchronization Signal), SSS (Secondary Synchronization Signal), PSSS, SSSS}.

[0035] As an embodiment, the downlink signaling is physical layer signaling.

[0036] As an embodiment, the downlink signaling includes a TPC field.

[0037] As an embodiment, the downlink signaling is DCI (Downlink Control Information) including a TPC field.

[0038] As an embodiment, the synchronization sequence is used to determine a first type of identifier, and the first type of identifier is an integer.

[0039] As a sub - embodiment of this embodiment, the first type of identifier is a PCI (Physical Cell Identifier).

[0040] As a sub - embodiment of this embodiment, the first type of identifier uniquely corresponds to a cell.

[0041] As a sub - embodiment of this embodiment, the first type of identifier uniquely corresponds to a base station.

[0042] As a sub - embodiment of this embodiment, the first type of identifier uniquely corresponds to a TRP (Transmission Reception Point).

[0043] As an embodiment, the K downlink radio signals respectively come from K different nodes, and the node is one of {cell, base station, TRP}.

[0044] As an embodiment, the downlink radio signal includes a downlink reference signal, and the first type of identifier is used to generate a reference signal sequence corresponding to a given downlink reference signal, where the given downlink reference signal is the downlink reference signal included in the downlink radio signal.

[0045] As a sub - embodiment of this embodiment, the first type of identifier is used to initialize a generator of a first type of sequence, and the first type of sequence is used to generate a reference signal sequence corresponding to the given downlink reference signal.

[0046] As a subsidiary embodiment of this sub - embodiment, the given downlink reference signal is CRS, the first - type identifier is PCI, and the first - type identifier corresponds to that in Section 6.10.1.1 of TS 36.211 The first - type sequence corresponds to c(2m) and c(2m + 1) in Section 6.10.1.1 of TS36.211, and the reference signal sequence corresponds to that in Section 6.10.1.1 of TS 36.211 The Is expressed as:

[0047]

[0048] Wherein, the generator of the first - type sequence initialized by the first - type identifier means that the generator of the first - type sequence is initialized by c at the beginning of each OFDM (Orthogonal Frequency Division Multiplexing) symbol init The c init Is equal to The n s Is the label of the time slot where the reference signal sequence is located in a radio frame, and l is the serial number of the OFDM symbol where the reference signal sequence is located in a time slot. n′ s And N CP Are respectively equal to the following formulas. The Corresponds to the Largest Downlink Bandwidth Configuration.

[0049]

[0050]

[0051] As a subsidiary embodiment of this sub - embodiment, the given downlink reference signal is CSI - RS, the first - type identifier corresponds to that in Section 6.10.5.1 of TS 36.211 The first - type sequence corresponds to c(2m) and c(2m + 1) in Section 6.10.5.1 of TS 36.211, and the reference signal sequence corresponds to that in Section 6.10.5.1 of TS 36.211 The Is expressed as:

[0052]

[0053] Wherein, the generator of the first - type sequence initialized by the first - type identifier means that the generator of the first - type sequence is initialized by c at the beginning of each OFDM symbolinit Initialization. The c init equals The n s is the label of the time slot where the reference signal sequence is located in a radio frame, and l is the sequence number of the OFDM symbol where the reference signal sequence is located in a time slot. n' s and N CP respectively equal the following formulas. The corresponds to the Largest Downlink Bandwidth Configuration.

[0054]

[0055]

[0056] As an embodiment, the downlink radio signal includes downlink signaling, the first type of identifier is used to generate a scrambling sequence, and the scrambling sequence is used for scrambling a given downlink signaling, where the given downlink signaling is the downlink signaling included in the downlink radio signal.

[0057] As a sub - embodiment of this embodiment, the signal before scrambling the given downlink signaling is b(i), and the signal after scrambling the given downlink signaling is The scrambling sequence is c(i), and the initial value of the scrambling sequence is c init , and the first type of identifier is PCI and equals The The

[0058] As an embodiment, the downlink radio signal includes a synchronization signal, and the synchronization sequence is used to generate the synchronization signal included in the associated downlink radio signal.

[0059] As an embodiment, the synchronization sequence includes at least one of {pseudo - random sequence, Zadoff - Chu sequence}.

[0060] As an embodiment, the synchronization sequence corresponds to PSSS, and the root index of the synchronization sequence equals one of {26, 37}.

[0061] As an embodiment, the synchronization sequence corresponds to SSSS, and the The synchronization sequence corresponds to The

[0062] As an embodiment, the synchronization signal corresponds to the NPSS (NarrowBand PSS), and the root index of the ZC sequence corresponding to the synchronization sequence is equal to 5.

[0063] As an embodiment, the synchronization signal corresponds to the NSSS (NarrowBand SSS), and the synchronization sequence is generated according to the method in Section 10.2.7.2 of TS 36.211.

[0064] As an embodiment, the synchronization signal corresponds to the NR-PSS (New Radio PSS), and the synchronization sequence is a pure BPSK M sequence with a length of 127.

[0065] As a sub-embodiment of this embodiment, the NR-PSS is generated by a polynomial, and the polynomial corresponds to 145 in decimal.

[0066] As an affiliated embodiment of this sub-embodiment, the polynomial corresponding to 145 in decimal means that the polynomial is g(x) = x 7 +x 4 +1.

[0067] As a sub-embodiment of this embodiment, three PSS signals are obtained by three cyclic shifts (0, 43, 86) in the frequency domain of the NR-PSS.

[0068] As a sub-embodiment of this embodiment, the initial polynomial shift register value of the NR-PSS is 1110110 in binary.

[0069] As an embodiment, any two of the K synchronization signals correspond to different synchronization sequences, and the synchronization sequences include {a first type of sequence, a second type of sequence}.

[0070] As a sub-embodiment of this embodiment, the first type of sequence is a pseudo-random sequence, and the second type of sequence is a Zadoff-Chu sequence.

[0071] As a sub-embodiment of this embodiment, the first type of sequence is a pseudo-random sequence, and the second type of sequence is a pseudo-random sequence.

[0072] As a sub-embodiment of this embodiment, the first type of sequence is a Zadoff-Chu sequence, and the second type of sequence is a Zadoff-Chu sequence.

[0073] As an embodiment, at least one subcarrier is occupied by all of the K synchronization signals.

[0074] As an embodiment, the K synchronization signals are transmitted in the same bandwidth.

[0075] As an embodiment, the K synchronization signals are transmitted in the same system bandwidth.

[0076] As an embodiment, the K synchronization signals are transmitted on the same carrier.

[0077] As an embodiment, the K synchronization signals are transmitted on the same time-frequency resource.

[0078] As an embodiment, the unit of the first power is dBm (decibel-milliwatt).

[0079] As an embodiment, the unit of the first power is mW (milliwatt).

[0080] As an embodiment, the synchronization signal is generated after the corresponding synchronization sequence passes through {Resource Element Mapper, OFDM symbol generator} in sequence.

[0081] As an embodiment, the synchronization signal is generated after the corresponding synchronization sequence passes through {Precoding, Resource Element Mapper, OFDM symbol generator} in sequence.

[0082] Specifically, according to one aspect of the present invention, the method is characterized in that step A further includes the following steps:

[0083] - Step A1. Receive K information groups.

[0084] Wherein, the K information groups respectively correspond to K senders, and the K senders respectively send the K downlink wireless signals. The information group includes at least one of {maximum transmission power, desired power, compensation factor}. The first power is the minimum value among K reference powers, and the K reference powers and the K information groups correspond one by one.

[0085] As an embodiment, the method is characterized in that: the K reference powers are respectively powers obtained based on the path loss from the user equipment to the K senders, and further, the first wireless signal transmitted based on any one of the K reference powers will not interfere with the sender corresponding to the given reference power.

[0086] As an embodiment, another characteristic of the above method is that: the first power is the minimum value among K reference powers to ensure that the transmission of the user equipment does not cause strong interference to all the K transmitters.

[0087] As an embodiment, step A1 is located before step B.

[0088] As an embodiment, the information group further includes the identifier of the corresponding transmitter.

[0089] As a sub - embodiment of this embodiment, the identifier is PCI.

[0090] As a sub - embodiment of this embodiment, the identifier is one of {PLMN ID (Public Land Mobile Network Identifier), ECGI (E - UTRAN Cell Global Identifier)}. Where E - UTRAN is the Evolved Universal Terrestrial Radio Access Network.

[0091] As a sub - embodiment of this embodiment, the identifier is a non - negative integer.

[0092] As an embodiment, the unit of the desired power is dBm.

[0093] As an embodiment, the unit of the maximum transmission power is dBm.

[0094] As an embodiment, the compensation factor is not less than 0 and not greater than 1.

[0095] As an embodiment, the transmitter of the K information groups is one of the K transmitters.

[0096] As an embodiment, the transmitter of the K information groups is the serving cell of the user equipment.

[0097] As an embodiment, the transmitter of the K information groups is the serving base station of the user equipment.

[0098] As an embodiment, the transmitter of the K information groups is the corresponding TRP of the user equipment.

[0099] As an embodiment, the transmitter of the K information groups is a terminal associated with the user equipment.

[0100] As a sub - embodiment of this embodiment, the terminal associated with the user equipment is the peer terminal that performs D2D communication with the user equipment.

[0101] As a sub - embodiment of this embodiment, the serving cell of the terminal associated with the user equipment is one of the K senders.

[0102] As an embodiment, the senders of the K downlink radio signals are cells associated with the user equipment.

[0103] As a sub - embodiment of this embodiment, the cell associated with the user equipment is a cell that belongs to the same cell group as the serving cell of the user equipment.

[0104] As an ancillary embodiment of this sub - embodiment, there is a backhaul link between any two cells in the cell group.

[0105] As an ancillary embodiment of this sub - embodiment, all cells in the cell group are quasi - co - located (QCL) for the user equipment.

[0106] As an example of this ancillary embodiment, the given cell and the target cell being quasi - co - located for the user equipment means that: the user equipment can infer the large - scale characteristics of the radio signal transmitted in the target cell from the large - scale characteristics of the channel of the radio signal in the given cell. The large - scale characteristics include one or more of {delay spread, doppler spread, doppler shift, average gain, average delay, angle of arrival, angle of departure, spatial correlation}.

[0107] As an embodiment, the senders of the K downlink radio signals are terminals that have adjacent - cell interference with the user equipment.

[0108] As a sub - embodiment of this embodiment, the terminal that has adjacent - cell interference with the user equipment means that: the terminal is served by an adjacent cell of the serving cell of the user equipment, and the terminal can receive the radio signal transmission of the user equipment.

[0109] As an embodiment, the reference power is the smaller value between the maximum transmission power indicated by the corresponding information group and the comparison power, or the reference power is the maximum transmission power indicated by the corresponding information group. The comparison power is linearly related to the desired power indicated by the corresponding information group, and the comparison power is linearly related to the compensation factor indicated by the corresponding information group.

[0110] As a sub - embodiment of this embodiment, the linear coefficient between the comparison power and the compensation factor indicated by the corresponding information group is the corresponding path loss.

[0111] As a sub - embodiment of this embodiment, the linear coefficient between the comparison power and the desired power indicated by the corresponding information group is 1.

[0112] As an embodiment, the target information group is one of the K information groups. The target information group includes at least one of {target maximum transmission power, target desired power, target compensation factor}, and the target reference power corresponds to the target information group. The downlink signaling corresponding to the target information group includes a TPC field, and the TPC field is equal to 1. The target reference power is determined by the following formula:

[0113] P 0 = min{P 1 , 10log 10 (M)+P 2 +α·PL}

[0114] where, P 0 corresponds to the target reference power, P 1 corresponds to the target maximum transmission power, M corresponds to the bandwidth occupied by the first radio signal, P 2 corresponds to the target desired power, α corresponds to the target compensation factor, and PL corresponds to the path loss of the wireless link from the sender corresponding to the target information group to the user equipment.

[0115] As an embodiment, the target information group is one of the K information groups. The target information group includes at least one of {target maximum transmission power, target desired power, target compensation factor}, and the target reference power corresponds to the target information group. The downlink signaling corresponding to the target information group includes a TPC field and the TPC field is equal to 0, or the user equipment belongs to Sidelink Transmission Mode 2. The target reference power is determined by the following formula:

[0116] P 0 = P 1

[0117] Among them, P 0 corresponds to the target reference power, and P 1 corresponds to the target maximum transmission power.

[0118] As an embodiment, the K information groups include a first information group and (K - 1) of the information groups. The first information group is for a first node, and the first information group includes at least one of {the desired power, the compensation factor} for the first node, and the first information group does not include the maximum transmission power for the first node. The (K - 1) information groups are respectively for (K - 1) candidate nodes, and the (K - 1) information groups respectively include at least the maximum transmission power of {the maximum transmission power, the desired power, the compensation factor} for the (K - 1) candidate nodes.

[0119] As a sub - embodiment of this embodiment, the K senders include the first node, and the (K - 1) candidate nodes are the senders other than the first node among the K senders.

[0120] As a sub - embodiment of this embodiment, the first node is one of {the serving cell, the serving base station, the corresponding TRP} of the user equipment.

[0121] As a sub - embodiment of this embodiment, the candidate node is a cell other than the serving cell of the user equipment.

[0122] As a sub - embodiment of this embodiment, the candidate node is a base station other than the serving base station of the user equipment.

[0123] As a sub - embodiment of this embodiment, the candidate node is a TRP other than the serving TRP of the user equipment.

[0124] As a sub - embodiment of this embodiment, the candidate node is a terminal located outside the serving cell of the user equipment.

[0125] As a sub - embodiment of this embodiment, the maximum transmission power corresponding to the first information group is predefined.

[0126] As a sub - embodiment of this embodiment, the maximum transmission power corresponding to the first information group is not indicated by high - layer signaling.

[0127] As a sub - embodiment of this embodiment, the maximum transmission power corresponding to the first information group is related to the band to which the first radio signal belongs.

[0128] As a sub - embodiment of this embodiment, the maximum transmission power corresponding to the first information group is related to the modulation method adopted by the first wireless signal.

[0129] As a sub - embodiment of this embodiment, the maximum transmission power corresponding to the first information group is related to the channel bandwidth of the channel to which the first wireless signal belongs.

[0130] Specifically, according to one aspect of the present invention, the method is characterized in that step A further includes the following steps:

[0131] - Step A2. Determine K1 path losses.

[0132] Among them, K1 downlink wireless signals are respectively used to determine the K1 path losses. The K1 downlink wireless signals are a subset of the K downlink wireless signals. The K1 downlink wireless signals all include at least one of {downlink reference signal, synchronization signal}. K1 is a positive integer not greater than K. The K1 path losses are used to determine K1 of the reference powers, and the K1 reference powers are a subset of the K reference powers.

[0133] As an embodiment, the feature of the method is that: the user equipment only calculates the K1 reference powers, reducing the implementation complexity of the user equipment.

[0134] As an embodiment, the first power is not greater than the minimum value of the K1 reference powers.

[0135] As a sub - embodiment of this embodiment, K1 is equal to K, and the first power is equal to the minimum value of the K powers.

[0136] As an embodiment, among the K downlink wireless signals, there is no downlink wireless signal that includes at least one of {downlink reference signal, synchronization signal} outside the K1 downlink wireless signals.

[0137] As an embodiment, for any given reference power among the K1 reference powers, the given reference power is equal to the smaller value between the maximum transmission power and the comparison power indicated by the corresponding information group. The comparison power is linearly related to the expected power indicated by the corresponding information group, and the comparison power is linearly related to the compensation factor indicated by the corresponding information group.

[0138] As a sub - embodiment of this embodiment, the linear coefficient between the comparison power and the compensation factor indicated by the corresponding information group is the corresponding path loss.

[0139] As a sub - embodiment of this embodiment, the linear coefficient between the comparison power and the expected power indicated by the corresponding information group is 1.

[0140] Specifically, according to one aspect of the present invention, the above - mentioned method is characterized in that the K2 downlink radio signals respectively include K2 pieces of the above - mentioned downlink signaling, and the K2 downlink radio signals are a subset of the K downlink radio signals. The downlink signaling includes a transmit power control field, and the values of the transmit power control fields in the K2 pieces of downlink signaling are all equal. For any given downlink radio signal among the K2 downlink radio signals, the maximum transmit power in the information group corresponding to the sender of the given downlink radio signal is equal to the corresponding reference power. K2 is a positive integer not greater than K.

[0141] As an embodiment, the feature of the above - mentioned method is that among the K downlink radio signals, only the K2 downlink radio signals contain downlink signaling for TPC, further reducing the implementation complexity of the user equipment.

[0142] As an embodiment, the sum of K2 and K1 is equal to K.

[0143] As an embodiment, K2 is equal to K.

[0144] As an embodiment, the transmit power control field is a TPC field.

[0145] As an embodiment, the fact that the values of the transmit power control fields in the K2 pieces of downlink signaling are all equal means that the transmit power control fields in the K2 pieces of downlink signaling are all equal to 1.

[0146] Specifically, according to one aspect of the present invention, the above - mentioned method is characterized in that the K downlink radio signals are respectively sent by K senders, and the synchronization sequence is used to identify the senders of the associated downlink radio signals.

[0147] As an embodiment, the sender is a cell.

[0148] As an embodiment, the K senders are K serving cells occupying the same frequency - domain resource.

[0149] As an embodiment, the sender is a base station.

[0150] As an embodiment, the sender is a TRP.

[0151] As an embodiment, the synchronization sequence is used to determine the identifier of the corresponding sender.

[0152] As an example, the identifier is one of {PCI, PLMN ID, ECGI}.

[0153] As an example, the sender is a terminal.

[0154] The present invention discloses a method in a base station for wireless communication, which includes the following steps:

[0155] - Step A. Transmit a first downlink radio signal;

[0156] - Step B. Receive a first radio signal.

[0157] Among them, the transmission power of the first radio signal is a first power. K downlink radio signals are respectively associated with K synchronization sequences. The downlink radio signal includes at least one of {downlink reference signal, synchronization signal}, or the downlink radio signal includes downlink signaling. The K downlink radio signals are used to determine the first power. Any two of the K synchronization sequences are different. K is a positive integer greater than 1. The first downlink radio signal is one of the K downlink radio signals, and only the first downlink radio signal among the K downlink radio signals is transmitted by the sender of the first downlink radio signal.

[0158] As an example, the base station includes multiple cells, and the sender of the first downlink radio signal is a given cell among the multiple cells, and the given cell is the serving cell of the sender of the first radio signal.

[0159] As an example, the base station includes multiple TRPs, and the sender of the first downlink radio signal is a given TRP among the multiple TRPs, and the given TRP is the serving TRP of the sender of the first radio signal.

[0160] Specifically, according to one aspect of the present invention, the above method is characterized in that step A further includes the following steps:

[0161] - Step A1. Transmit K information groups.

[0162] Among them, the K information groups respectively correspond to K senders, and the K senders respectively transmit the K downlink radio signals. The information group includes at least one of {maximum transmission power, desired power, compensation factor}. The first power is the minimum value of K reference powers, and the K reference powers correspond to the K information groups one by one. The sender of the first downlink radio signal is one of the K senders.

[0163] As an example, step A1 is located before step B.

[0164] Specifically, according to one aspect of the present invention, the above method is characterized in that K1 downlink radio signals are respectively used to determine the K1 path losses. The K1 downlink radio signals are a subset of the K downlink radio signals. The K1 downlink radio signals all include at least one of {downlink reference signal, synchronization signal}. K1 is a positive integer not greater than K. The K1 path losses are used to determine K1 of the reference powers, and the K1 reference powers are a subset of the K reference powers.

[0165] Specifically, according to one aspect of the present invention, the above method is characterized in that K2 downlink radio signals respectively include K2 of the downlink signaling. The K2 downlink radio signals are a subset of the K downlink radio signals. The downlink signaling includes a transmit power control field, and the values of the transmit power control fields in the K2 downlink signaling are all equal. For any given downlink radio signal among the K2 downlink radio signals, the maximum transmit power in the information group corresponding to the sender of the given downlink radio signal is equal to the corresponding reference power. K2 is a positive integer not greater than K.

[0166] Specifically, according to one aspect of the present invention, the above method is characterized in that the K downlink radio signals are respectively sent by K senders, and the synchronization sequence is used to identify the sender of the associated downlink radio signal.

[0167] The present invention discloses a user equipment for wireless communication, which includes the following modules:

[0168] - A first receiving module: configured to receive K downlink radio signals;

[0169] - A first transmitting module: configured to transmit a first radio signal.

[0170] Wherein, the transmit power of the first radio signal is a first power. The K downlink radio signals are respectively associated with K synchronization sequences. The downlink radio signal includes at least one of {downlink reference signal, synchronization signal}, or the downlink radio signal includes downlink signaling. The K downlink radio signals are used to determine the first power. Any two of the K synchronization sequences are different. K is a positive integer greater than 1.

[0171] As an embodiment, the user equipment for wireless communication is characterized in that the first receiving module is further configured to receive K information groups. The K information groups respectively correspond to K senders, and the K senders respectively send the K downlink wireless signals. The information group includes at least one of {maximum transmission power, desired power, compensation factor}. The first power is the minimum value among K reference powers, and the K reference powers and the K information groups correspond one by one.

[0172] As an embodiment, the user equipment for wireless communication is characterized in that the first receiving module is further configured to determine K1 path losses. K1 downlink wireless signals are respectively used to determine the K1 path losses. The K1 downlink wireless signals are a subset of the K downlink wireless signals, and the K1 downlink wireless signals all include at least one of {downlink reference signal, synchronization signal}, and K1 is a positive integer not greater than K. The K1 path losses are used to determine K1 of the reference powers, and the K1 reference powers are a subset of the K reference powers.

[0173] As an embodiment, the user equipment for wireless communication is characterized in that K2 downlink wireless signals respectively include K2 of the downlink signaling, and the K2 downlink wireless signals are a subset of the K downlink wireless signals. The downlink signaling includes a transmission power control field, and the values of the transmission power control fields in the K2 downlink signaling are all equal. For any given downlink wireless signal among the K2 downlink wireless signals, the maximum transmission power in the information group corresponding to the sender of the given downlink wireless signal is equal to the corresponding reference power. K2 is a positive integer not greater than K.

[0174] As an embodiment, the user equipment for wireless communication is characterized in that the K downlink wireless signals are respectively sent by K senders, and the synchronization sequence is used to identify the sender of the associated downlink wireless signal.

[0175] The present invention discloses a base station device for wireless communication, which includes the following modules:

[0176] - A second sending module: configured to send a first downlink wireless signal;

[0177] - A second receiving module: configured to receive a first wireless signal.

[0178] Among them, the transmission power of the first wireless signal is the first power. K downlink wireless signals are respectively associated with K synchronization sequences. The downlink wireless signal includes at least one of {downlink reference signal, synchronization signal}, or the downlink wireless signal includes downlink signaling. The K downlink wireless signals are used to determine the first power. Any two of the K synchronization sequences are different. K is a positive integer greater than 1. The first downlink wireless signal is one of the K downlink wireless signals, and only the first downlink wireless signal among the K downlink wireless signals is sent by the sender of the first downlink wireless signal.

[0179] As an embodiment, the base station device for wireless communication is characterized in that the second sending module is further configured to send K information groups. The K information groups respectively correspond to K senders, and the K senders respectively send the K downlink wireless signals. The information group includes at least one of {maximum transmission power, desired power, compensation factor}. The first power is the minimum value of K reference powers, and the K reference powers correspond to the K information groups one by one. The sender of the first downlink wireless signal is one of the K senders.

[0180] As an embodiment, the base station device for wireless communication is characterized in that K1 downlink wireless signals are respectively used to determine the K1 path losses. The K1 downlink wireless signals are a subset of the K downlink wireless signals, and all of the K1 downlink wireless signals include at least one of {downlink reference signal, synchronization signal}. K1 is a positive integer not greater than K. The K1 path losses are used to determine K1 of the reference powers, and the K1 reference powers are a subset of the K reference powers.

[0181] As an embodiment, the base station device for wireless communication is characterized in that K2 downlink wireless signals respectively include K2 of the downlink signaling, and the K2 downlink wireless signals are a subset of the K downlink wireless signals. The downlink signaling includes a transmission power control field, and the values of the transmission power control fields in the K2 downlink signaling are all equal. For any given downlink wireless signal among the K2 downlink wireless signals, the maximum transmission power in the information group corresponding to the sender of the given downlink wireless signal is equal to the corresponding reference power. K2 is a positive integer not greater than K.

[0182] As an embodiment, the base station device for wireless communication is characterized in that the K downlink wireless signals are respectively sent by K senders, and the synchronization sequence is used to identify the sender of the associated downlink wireless signal.

[0183] As an embodiment, compared with the existing disclosed technologies, the present invention has the following technical advantages:

[0184] -. By designing the mechanism in which the K downlink wireless signals are used to determine the first power, when the K downlink wireless signals respectively correspond to K different cells, the determination of the first power is based on not generating adjacent cell interference on the uplink reception of the K different cells; when the K downlink wireless signals respectively correspond to K different ground terminals, the determination of the first power is based on not generating adjacent cell interference on the reception of the K different ground terminals.

[0185] -. The first power is the minimum value among the K reference powers to ensure that the transmission of the user equipment does not cause strong interference to all the K transmitters.

[0186] -. By designing K1 reference powers, the user equipment only calculates the K1 reference powers, reducing the implementation complexity of the user equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0187] Other features, objects, and advantages of the present invention will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings:

[0188] Figure 1 Shows a flowchart of a first wireless signal transmission according to an embodiment of the present invention;

[0189] Figure 2 Shows a flowchart of a first wireless signal transmission according to another embodiment of the present invention;

[0190] Figure 3 Shows a schematic diagram of an application scenario according to the present invention;

[0191] Figure 4 Shows a block diagram of a processing device in a UE according to an embodiment of the present invention;

[0192] Figure 5 Shows a block diagram of a processing device in a base station according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0193] The technical solutions of the present invention will be further described in detail below with reference to the drawings. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

[0194] Embodiment 1

[0195] Embodiment 1 exemplifies a flowchart of a first wireless signal transmission according to the present invention, as shown in the attached Figure 1As shown in the attached Figure 1 Among them, base station N1 is the serving cell maintaining base station of UE U2.

[0196] For Base Station N1 , in step S10, K information groups are sent, in step S11, a first downlink radio signal is sent, and in step S12, a first radio signal is received.

[0197] For UE U2 , in step S20, K information groups are received, in step S21, K downlink radio signals are received, in step S22, K1 path losses are determined, and in step S23, a first radio signal is sent.

[0198] In Embodiment 1, the transmission power of the first radio signal is the first power. The K downlink radio signals are respectively associated with K synchronization sequences. The downlink radio signal includes at least one of {downlink reference signal, synchronization signal}, or the downlink radio signal includes downlink signaling. The K downlink radio signals are used to determine the first power. Any two of the K synchronization sequences are different. K is a positive integer greater than 1. The K information groups respectively correspond to K senders, and the K senders respectively send the K downlink radio signals. The information group includes at least one of {maximum transmission power, desired power, compensation factor}. The first power is the minimum value of K reference powers, and the K reference powers correspond to the K information groups one by one. Base station N1 is one of the K senders. The K1 downlink radio signals are respectively used to determine the K1 path losses. The K1 downlink radio signals are a subset of the K downlink radio signals, and all the K1 downlink radio signals include at least one of {downlink reference signal, synchronization signal}, and K1 is a positive integer not greater than K. The K1 path losses are used to determine K1 of the reference powers, and the K1 reference powers are a subset of the K reference powers. The K2 downlink radio signals respectively include K2 of the downlink signaling, and the K2 downlink radio signals are a subset of the K downlink radio signals. The downlink signaling includes a transmission power control field, and the values of the transmission power control fields in the K2 downlink signaling are all equal. For any given downlink radio signal among the K2 downlink radio signals, the maximum transmission power in the information group corresponding to the sender of the given downlink radio signal is equal to the corresponding reference power. K2 is a positive integer not greater than K. The K downlink radio signals are respectively sent by K senders, and the synchronization sequence is used to identify the sender of the associated downlink radio signal.

[0199] As a sub - embodiment, the K downlink radio signals include (K - 1) downlink radio signals shown in the figure and the first downlink radio signal.

[0200] As a sub - embodiment, the K information groups are carried by user - equipment - specific (UE - Specific) higher - layer signaling.

[0201] As an ancillary embodiment of this sub - embodiment, the higher - layer signaling is RRC (Radio Resource Control) layer signaling.

[0202] As a sub - embodiment, the K information groups are semi - statically configured.

[0203] As a sub - embodiment, the transmission channel corresponding to the first radio signal is UL - SCH (Uplink Shared Channel).

[0204] As a sub - embodiment, the transmission channel corresponding to the first radio signal is SL - SCH (Sidelink Shared Channel).

[0205] As a sub - embodiment, the transmission channel corresponding to the first radio signal is SL - DCH (Sidelink Discovery Channel).

[0206] As a sub - embodiment, the transmission channel corresponding to the first radio signal is SL - BCH (Sidelink Broadcast Channel).

[0207] Embodiment 2

[0208] Embodiment 2 exemplifies a flowchart of a first radio signal transmission according to the present invention, as shown in the appendix. Figure 2 Shown in the appendix. Figure 2 Among them, base station N3 is the serving cell maintaining base station of UE U4.

[0209] For Base Station N3 , the first downlink radio signal is sent in step S30, the K information groups are sent in step S31, and the first radio signal is received in step S32.

[0210] For UE U4 , the K downlink radio signals are received in step S40, K1 path losses are determined in step S41, the K information groups are received in step S42, and the first radio signal is sent in step S43.

[0211] In Embodiment 2, the transmission power of the first radio signal is the first power. The K downlink radio signals are respectively associated with K synchronization sequences. The downlink radio signal includes at least one of {downlink reference signal, synchronization signal}, or the downlink radio signal includes downlink signaling. The K downlink radio signals are used to determine the first power. Any two of the K synchronization sequences are different. K is a positive integer greater than 1. The K information groups respectively correspond to K senders, and the K senders respectively send the K downlink radio signals. The information group includes at least one of {maximum transmission power, desired power, compensation factor}. The first power is the minimum value among the K reference powers, and the K reference powers correspond to the K information groups one by one. The base station N3 is one of the K senders. K1 downlink radio signals are respectively used to determine the K1 path losses. The K1 downlink radio signals are a subset of the K downlink radio signals, and all the K1 downlink radio signals include at least one of {downlink reference signal, synchronization signal}, and K1 is a positive integer not greater than K. The K1 path losses are used to determine K1 of the reference powers, and the K1 reference powers are a subset of the K reference powers. K2 downlink radio signals respectively include K2 of the downlink signaling, and the K2 downlink radio signals are a subset of the K downlink radio signals. The downlink signaling includes a transmission power control field, and the values of the transmission power control fields in the K2 downlink signaling are all equal. For any given downlink radio signal among the K2 downlink radio signals, the maximum transmission power in the information group corresponding to the sender of the given downlink radio signal is equal to the corresponding reference power. K2 is a positive integer not greater than K. The K downlink radio signals are respectively sent by K senders, and the synchronization sequence is used to identify the sender of the associated downlink radio signal.

[0212] As a sub-embodiment, the K downlink radio signals include the (K - 1) downlink radio signals shown in the figure and the first downlink radio signal.

[0213] As a sub-embodiment, the K information groups are carried by user equipment specific high layer signaling.

[0214] As an ancillary embodiment of this sub-embodiment, the high layer signaling is RRC layer signaling.

[0215] As a sub-embodiment, the K information groups are semi-statically configured.

[0216] As a sub-embodiment, the transmission channel corresponding to the first radio signal is UL-SCH.

[0217] As a sub - embodiment, the transmission channel corresponding to the first wireless signal is SL - SCH.

[0218] As a sub - embodiment, the transmission channel corresponding to the first wireless signal is SL - DCH.

[0219] As a sub - embodiment, the transmission channel corresponding to the first wireless signal is SL - BCH.

[0220] Embodiment 3

[0221] Embodiment 3 exemplifies a schematic diagram of an application scenario according to the present invention, as shown in the attached Figure 3 figure. The air terminal in the figure corresponds to the user equipment in the present invention, and the first node shown corresponds to the sender of the first downlink wireless signal in the present invention. The ground terminal is the terminal opposite to the air terminal, and the ground terminal and the air terminal perform D2D communication. The second node, the third node to the K - th node respectively correspond to (K - 1) of the senders of the K downlink wireless signals in the present invention. The first node to the K - th node form the K senders corresponding one - to - one to the K downlink wireless signals. The air terminal sends the first wireless signal in the present invention. The K information groups in the present invention respectively correspond to the first node to the K - th node. The transmission from the air terminal to the ground terminal causes interference to the reception of the second node to the K - th node. The K information groups in the present invention include the first information group to the K information group, and the first information group to the K information group respectively correspond to the first node to the K - th node.

[0222] As a sub - embodiment, the first node is the serving cell of the air terminal.

[0223] As a sub - embodiment, the air terminal and the ground terminal belong to a D2D pair.

[0224] As a sub - embodiment, the first node is the serving cell of the ground terminal.

[0225] As a sub - embodiment, the first wireless signal is received by the ground terminal simultaneously.

[0226] As a sub - embodiment, the first wireless signal can be detected by the second node to the K - th node.

[0227] As a sub - embodiment, a given node is an adjacent cell of the first node, and a given downlink radio signal transmitted by the given node can be detected by the air terminal. The given node is any one of the second node to the K - th node, and the given downlink radio signal is the downlink radio signal transmitted by the given node among the K downlink radio signals.

[0228] As a sub - embodiment, a given node is a terminal device in an adjacent cell of the first node, and a given downlink radio signal transmitted by the given node can be detected by the air terminal. The given node is any one of the second node to the K - th node, and the given downlink radio signal is the downlink radio signal transmitted by the given node among the K downlink radio signals.

[0229] Embodiment 4

[0230] Embodiment 4 exemplifies a structural block diagram of a processing device in a UE, as shown in the appendix Figure 4 shown. In the appendix Figure 4 UE processing device 100 mainly consists of a first receiving module 101 and a first transmitting module 102.

[0231] - The first receiving module 101: is used to receive K downlink radio signals;

[0232] - The first transmitting module 102: is used to transmit a first radio signal.

[0233] In Embodiment 4, the transmission power of the first radio signal is a first power. The K downlink radio signals are respectively associated with K synchronization sequences. The downlink radio signal includes at least one of {downlink reference signal, synchronization signal}, or the downlink radio signal includes downlink signaling. The K downlink radio signals are used to determine the first power. Any two of the K synchronization sequences are different. K is a positive integer greater than 1.

[0234] As a sub - embodiment, the first receiving module 101 is further used to receive K information groups. The K information groups respectively correspond to K senders, and the K senders respectively transmit the K downlink radio signals. The information group includes at least one of {maximum transmission power, desired power, compensation factor}. The first power is the minimum value of K reference powers, and the K reference powers correspond one - to - one with the K information groups.

[0235] As a sub - embodiment, the first receiving module 101 is further configured to determine K1 path losses. The K1 downlink radio signals are respectively used to determine the K1 path losses. The K1 downlink radio signals are a subset of the K downlink radio signals, and each of the K1 downlink radio signals includes at least one of {downlink reference signal, synchronization signal}. K1 is a positive integer not greater than K. The K1 path losses are used to determine K1 of the reference powers, and the K1 reference powers are a subset of the K reference powers.

[0236] As a sub - embodiment, K2 downlink radio signals respectively include K2 of the downlink signaling. The K2 downlink radio signals are a subset of the K downlink radio signals. The downlink signaling includes a transmit power control field, and the values of the transmit power control fields in the K2 downlink signaling are all equal. For any given downlink radio signal among the K2 downlink radio signals, the maximum transmit power in the information group corresponding to the sender of the given downlink radio signal is equal to the corresponding reference power. K2 is a positive integer not greater than K.

[0237] As a sub - embodiment, the K downlink radio signals are respectively sent by K senders, and the synchronization sequence is used to identify the sender of the associated downlink radio signal.

[0238] Embodiment 5

[0239] Embodiment 5 exemplifies a structural block diagram of a processing device in a base station device, as shown in the appendix Figure 5 shown. In the appendix Figure 5 The base station device processing device 200 mainly consists of a second transmitting module 201 and a second receiving module 202.

[0240] - The second transmitting module 201: is configured to transmit a first downlink radio signal;

[0241] - The second receiving module 202: is configured to receive a first radio signal.

[0242] In Embodiment 5, the transmit power of the first radio signal is a first power. K downlink radio signals are respectively associated with K synchronization sequences. The downlink radio signal includes at least one of {downlink reference signal, synchronization signal}, or the downlink radio signal includes downlink signaling. The K downlink radio signals are used to determine the first power. Any two of the K synchronization sequences are different. K is a positive integer greater than 1. The first downlink radio signal is one of the K downlink radio signals, and only the first downlink radio signal among the K downlink radio signals is sent by the sender of the first downlink radio signal.

[0243] As a sub - embodiment, the second sending module 201 is further configured to send K information groups. The K information groups respectively correspond to K senders, and the K senders respectively send the K downlink wireless signals. Each information group includes at least one of {maximum transmission power, desired power, compensation factor}. The first power is the minimum value among the K reference powers, and the K reference powers and the K information groups are in one - to - one correspondence. The sender of the first downlink wireless signal is one of the K senders.

[0244] As a sub - embodiment, K1 downlink wireless signals are respectively used to determine the K1 path losses. The K1 downlink wireless signals are a subset of the K downlink wireless signals, and each of the K1 downlink wireless signals includes at least one of {downlink reference signal, synchronization signal}. K1 is a positive integer not greater than K. The K1 path losses are used to determine K1 of the reference powers, and the K1 reference powers are a subset of the K reference powers.

[0245] As a sub - embodiment, K2 downlink wireless signals respectively include K2 downlink signaling. The K2 downlink wireless signals are a subset of the K downlink wireless signals. The downlink signaling includes a transmission power control field, and the values of the transmission power control fields in the K2 downlink signaling are all equal. For any given downlink wireless signal among the K2 downlink wireless signals, the maximum transmission power in the information group corresponding to the sender of the given downlink wireless signal is equal to the corresponding reference power. K2 is a positive integer not greater than K.

[0246] As a sub - embodiment, the K downlink wireless signals are respectively sent by K senders, and the synchronization sequence is used to identify the sender of the associated downlink wireless signal.

[0247] Those of ordinary skill in the art can understand that all or part of the steps in the above methods can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk, or an optical disc, etc. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiments can be implemented in a hardware form or in the form of a software functional module. This application is not limited to any specific form of the combination of software and hardware. The UE and the terminal in the present invention include, but are not limited to, drones, communication modules on drones, remote control airplanes, aircraft, small airplanes, mobile phones, tablet computers, notebooks, vehicle-mounted communication devices, wireless sensors, network cards, Internet of Things terminals, RFID terminals, NB-IOT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, network cards, vehicle-mounted communication devices, low-cost mobile phones, low-cost tablet computers, and other devices. The base stations in the present invention include, but are not limited to, macrocell base stations, microcell base stations, home base stations, relay base stations, and other wireless communication devices.

[0248] As described above, the above are only the preferred embodiments of the present invention, and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method in a user equipment for wireless communication, characterized in that, it comprises the following steps: receiving K information groups (S20); receiving K downlink radio signals (S21); determining K1 path losses (S22); transmitting a first radio signal (S23); wherein, the transmission power of the first radio signal is a first power; the K downlink radio signals are respectively associated with K synchronization sequences; the downlink radio signal includes at least one of a downlink reference signal or a synchronization signal, or the downlink radio signal includes downlink signaling; any two of the K synchronization sequences are different; K is a positive integer greater than 1; the K information groups respectively correspond to K senders, the K senders are the serving cell, serving base station or corresponding transmission and reception point TRP of the user equipment, the K senders respectively transmit the K downlink radio signals; the information group includes at least one of a maximum transmission power, an expected power or a compensation factor; the K information groups respectively correspond to K path losses, the K information groups and the corresponding K path losses are respectively used to determine K reference powers; the K1 downlink radio signals are respectively used to determine the K1 path losses, the K1 downlink radio signals are a subset of the K downlink radio signals, the K1 downlink radio signals all include at least one of the downlink reference signal or the synchronization signal, K1 is a positive integer not greater than K; the K1 path losses are used to determine K1 of the reference powers, the K1 reference powers are a subset of the K reference powers; the first power is not greater than the minimum value of the K1 reference powers.

2. The method according to claim 1, characterized in that, K2 downlink radio signals respectively include K2 of the downlink signaling, the K2 downlink radio signals are a subset of the K downlink radio signals; the downlink signaling includes a transmission power control field, and the values of the transmission power control fields in the K2 downlink signaling are all equal; for any given downlink radio signal among the K2 downlink radio signals, the maximum transmission power in the information group corresponding to the sender of the given downlink radio signal is equal to the corresponding reference power; K2 is a positive integer not greater than K.

3. The method according to claim 1 or 2, characterized in that, the K downlink radio signals are respectively transmitted by K senders, and the synchronization sequence is used to identify the sender of the associated downlink radio signal.

4. A method in a base station for wireless communication, characterized in that, it includes: transmitting K information groups (S10); transmitting a first downlink radio signal (S11); receiving a first radio signal (S12); the first radio signal is transmitted by a user equipment for peer communication; Wherein, the transmission power of the first wireless signal is a first power; the first power is not greater than the minimum value among K1 reference powers, the K1 reference powers are determined by K1 path losses, the K1 path losses are determined by K1 downlink wireless signals, the K1 reference powers are a subset of K reference powers, the K reference powers are determined by K information groups received by the user equipment and corresponding K path losses, the K path losses correspond to the K information groups respectively; the K1 downlink wireless signals are a subset of the K downlink wireless signals received by the user equipment, the K1 downlink wireless signals all include at least one of a downlink reference signal or a synchronization signal, K1 is a positive integer not greater than K; the K information groups correspond to K senders respectively, the K senders are the serving cell, the serving base station or the corresponding transmission and reception point TRP of the user equipment, the K senders send the K downlink wireless signals respectively; the K downlink wireless signals are associated with K synchronization sequences respectively; the downlink wireless signal includes at least one of a downlink reference signal or a synchronization signal, or the downlink wireless signal includes a downlink signaling; any two of the K synchronization sequences are different; K is a positive integer greater than 1; the first downlink wireless signal is one of the K downlink wireless signals, and only the first downlink wireless signal among the K downlink wireless signals is sent by the sender of the first downlink wireless signal; the information group includes at least one of a maximum transmission power, an expected power or a compensation factor; the sender of the first downlink wireless signal is one of the K senders.

5. The method according to claim 4, wherein, K2 downlink wireless signals respectively include K2 of the downlink signaling, the K2 downlink wireless signals are a subset of the K downlink wireless signals; the downlink signaling includes a transmission power control field, and the values of the transmission power control fields in the K2 downlink signaling are all equal; for any given downlink wireless signal among the K2 downlink wireless signals, the maximum transmission power in the information group corresponding to the sender of the given downlink wireless signal is equal to the corresponding reference power; K2 is a positive integer not greater than K.

6. The method according to claim 4 or 5, wherein, the K downlink wireless signals are respectively sent by K senders, and the synchronization sequence is used to identify the sender of the associated downlink wireless signal.

7. A user equipment for use in wireless communication, wherein, comprising: a first receiving module, configured to receive K information groups and receive K downlink wireless signals; the first receiving module is further configured to determine K1 path losses; a first sending module, configured to send a first wireless signal; Wherein, the transmission power of the first wireless signal is a first power; the K downlink wireless signals are respectively associated with K synchronization sequences; the downlink wireless signal includes at least one of a downlink reference signal or a synchronization signal, or the downlink wireless signal includes downlink signaling; any two of the K synchronization sequences are different; K is a positive integer greater than 1; the K information groups respectively correspond to K senders, the K senders are the serving cell of the user equipment, the serving base station or the corresponding transmission and reception point TRP, and the K senders respectively send the K downlink wireless signals; the information group includes at least one of a maximum transmission power, an expected power or a compensation factor; the K information groups respectively correspond to K path losses, and the K information groups and the corresponding K path losses are respectively used to determine K reference powers; K1 downlink wireless signals are respectively used to determine the K1 path losses; the K1 downlink wireless signals are a subset of the K downlink wireless signals, the K1 downlink wireless signals all include at least one of the downlink reference signal or the synchronization signal, and K1 is a positive integer not greater than K; the K1 path losses are used to determine K1 of the reference powers, and the K1 reference powers are a subset of the K reference powers; the first power is not greater than the minimum value of the K1 reference powers.

8. The user equipment according to claim 7, wherein, K2 downlink wireless signals respectively include K2 of the downlink signaling, and the K2 downlink wireless signals are a subset of the K downlink wireless signals; the downlink signaling includes a transmission power control field, and the values of the transmission power control fields in the K2 downlink signaling are all equal; for any given downlink wireless signal among the K2 downlink wireless signals, the maximum transmission power in the information group corresponding to the sender of the given downlink wireless signal is equal to the corresponding reference power; K2 is a positive integer not greater than K.

9. The user equipment according to claim 7 or 8, wherein, the K downlink wireless signals are respectively sent by K senders, and the synchronization sequence is used to identify the sender of the associated downlink wireless signal.

10. A base station device for use in wireless communication, wherein, comprising: a second transmission module, sending K information groups and sending a first downlink wireless signal; a second reception module, receiving a first wireless signal; the first wireless signal is sent by the first transmission module of the user equipment for peer communication; Among them, the transmission power of the first wireless signal is the first power; the first power is not greater than the minimum value of K1 reference powers, the K1 reference powers are determined by K1 path losses, the K1 path losses are determined by K1 downlink wireless signals, the K1 reference powers are a subset of K reference powers, the K reference powers are determined by K information groups received by the user equipment and the corresponding K path losses, the K path losses correspond to the K information groups respectively; the K1 downlink wireless signals are a subset of the K downlink wireless signals received by the user equipment, the K1 downlink wireless signals all include at least one of a downlink reference signal or a synchronization signal, K1 is a positive integer not greater than K; the K information groups correspond to K senders respectively, the K senders are the serving cell, the serving base station or the corresponding transmission and reception point TRP of the user equipment, the K senders send the K downlink wireless signals respectively; the K downlink wireless signals are associated with K synchronization sequences respectively; the downlink wireless signal includes at least one of a downlink reference signal or a synchronization signal, or the downlink wireless signal includes a downlink signaling; any two of the K synchronization sequences are different; K is a positive integer greater than 1; the first downlink wireless signal is one of the K downlink wireless signals, and only the first downlink wireless signal among the K downlink wireless signals is sent by the sender of the first downlink wireless signal; the information group includes at least one of a maximum transmission power, an expected power or a compensation factor; the sender of the first downlink wireless signal is one of the K senders.

11. The base station device according to claim 10, characterized in that, The K2 downlink wireless signals respectively include K2 of the downlink signaling, and the K2 downlink wireless signals are a subset of the K downlink wireless signals; the downlink signaling includes a transmission power control field, and the values of the transmission power control fields in the K2 downlink signaling are all equal; for any given downlink wireless signal among the K2 downlink wireless signals, the maximum transmission power in the information group corresponding to the sender of the given downlink wireless signal is equal to the corresponding reference power; K2 is a positive integer not greater than K.

12. The base station device according to claim 10 or 11, characterized in that, The K downlink wireless signals are respectively sent by K senders, and the synchronization sequence is used to identify the sender of the associated downlink wireless signal.

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