Uplink Transmission Method and Related Devices

Abstract

An embodiment of the present application provides an uplink transmission method and related apparatus. The method includes: a terminal device sending an uplink signal including a zero-power reference signal to a network device; wherein, in the time-frequency resource for sending the uplink signal, the transmission power of the uplink signal within the time-frequency resource range of the zero-power reference signal is zero. The technical solution provided by the present application can enable the base station to measure uplink transmission interference and improve the performance of data transmission from the terminal device to the network device.

Description

Technical Field

[0001] This application relates to the field of data transmission, and in particular to an uplink transmission method and related devices. Background Art

[0002] In a mobile communication network, during the process of data transmission between a terminal device and a network device, interference may be caused by data transmission of terminal devices from neighboring cells in the vicinity. As a result, data transmission may fail because the interference is too strong for the receiving end to correctly demodulate the received signal. Summary of the Invention

[0003] This application provides an uplink transmission method and related devices, which can improve the transmission success rate of data transmitted from a terminal device to a network device.

[0004] In a first aspect, an embodiment of this application provides an uplink transmission method, including:

[0005] The terminal device sends an uplink signal including a zero-power reference signal to the network device;

[0006] Wherein, in the time-frequency resource used for sending the uplink signal, the transmission power of the uplink signal within the time-frequency resource range of the zero-power reference signal is zero.

[0007] By setting a zero-power reference signal in the uplink signal by the terminal device, since the signal received on the time-frequency resource of the zero-power reference signal can reflect the interference brought by data transmission in neighboring cells around the serving cell of the terminal device to the uplink data transmission of the terminal device, the network device can estimate the interference from neighboring cells and perform interference cancellation from the received signal based on the uplink signal received within the time-frequency resource range of the zero-power reference signal, thereby improving the demodulation performance of uplink data and enhancing the uplink data transmission ability.

[0008] In a possible implementation, before the terminal device sends an uplink signal including a zero-power reference to the network device, it includes:

[0009] Generating the uplink signal according to the configuration information of the zero-power reference signal; wherein the configuration information is used to indicate the pattern of the time-frequency resource of the zero-power reference signal.

[0010] In a possible implementation, before generating the uplink signal according to the configuration information of the zero-power reference signal, it includes:

[0011] Receiving the configuration information sent by the network device.

[0012] In a possible implementation, the uplink signal further includes a Demodulation and Reference Signal (DMRS), and the time-frequency resources of the zero-power reference signal do not overlap with those of the DMRS.

[0013] In a possible implementation, the zero-power reference signal is the zero-power reference signal corresponding to the serving cell of the terminal device; the time-frequency resources of the zero-power reference signal corresponding to the serving cell and those of the adjacent cells of the serving cell do not overlap with each other.

[0014] In a possible implementation, in a time-frequency resource unit for transmitting the uplink signal, the number of zero-power reference signals is one or more;

[0015] wherein, the time domain of the time-frequency resource unit includes: one time slot, or one mini-slot, or at least two time domain symbols.

[0016] In a possible implementation, the number of Resource Elements (REs) occupied by each zero-power reference signal is one or more.

[0017] In a possible implementation, the configuration information of the zero-power reference information includes at least one of the following information:

[0018] In any time-frequency resource unit for transmitting the uplink signal, the number of zero-power reference signals,

[0019] the number of Resource Elements (REs) occupied by each zero-power reference signal;

[0020] the starting time domain symbol of the time domain symbol range allowed to be occupied by each zero-power reference signal;

[0021] When the number of REs occupied by each zero-power reference signal is 2, the distribution manner of the time domain symbols where the 2 REs are located;

[0022] at least one subcarrier where each zero-power reference signal is located;

[0023] When the number of REs occupied by each zero-power reference signal is 2, the subcarrier offset between the first subcarrier and the second subcarrier where the 2 REs are located;

[0024] When the number of zero-power reference signals is 2, an indication of whether the subcarriers where the 2 zero-power reference signals are located are the same;

[0025] When the subcarriers where the 2 zero-power reference signals are located are different, the subcarrier offset between the subcarriers where the 2 zero-power reference signals are located.

[0026] In a possible implementation, when the number of REs occupied by each of the zero-power reference signals is 1, the time-domain symbol where the 1 RE is located is the starting time-domain symbol of the time-domain symbol range allowed to be occupied by each of the zero-power reference signals;

[0027] When the number of REs occupied by each of the zero-power reference information signals is 2, the time-domain symbols where the 2 REs are located are at least one of the 2 time-domain symbols starting from the starting time-domain symbol;

[0028] Among them, the uplink signal further includes DMRS; the starting time-domain symbol of the time-domain symbols allowed to be occupied by each of the zero-power reference signals is any one of the following: the first time-domain symbol after the time-domain symbol where the time-frequency resource of the DMRS is located, or the middle time-domain symbol in the time-frequency resource unit; where the middle time-domain symbol is different from the time-domain symbol where the time-frequency resource of the DMRS is located, or the second time-domain symbol after the first time-domain symbol where the time-frequency resource of the DMRS is located.

[0029] In a possible implementation, the number of REs occupied by the zero-power reference signal of the serving cell of the terminal device is 1, and the number of REs occupied by the zero-power reference signal of the neighboring cell of the serving cell of the terminal device is 1;

[0030] The first subcarriers corresponding to the serving cell and the neighboring cell of the serving cell are different, and the first subcarrier is the subcarrier where the zero-power reference signal is located.

[0031] In a possible implementation, the number of REs occupied by the zero-power reference signal corresponding to the target cell is 2, and the target cell is any one of the serving cell of the terminal device and the neighboring cell of the serving cell;

[0032] The first subcarrier and the second subcarrier corresponding to the target cell are not adjacent to each other, and the first subcarrier and the second subcarrier are the subcarriers where the 2 REs corresponding to the target cell are located;

[0033] The subcarriers where the REs occupied by the zero-power reference signals corresponding to different target cells located in the same time-domain symbol are different.

[0034] In a possible implementation, the time-frequency resource unit for transmitting the uplink signal includes 12 subcarriers; the frequency-domain offset FreqOffset of the first subcarrier corresponding to any target cell in the serving cell and the neighboring cell of the serving cell is determined according to the cell identity CID of the target cell, where

[0035] When mod(CID, Q) < 6, FreqOffset = mod(CID, Q) × 2;

[0036] When mod(CID, Q) = 6, FreqOffset = 11;

[0037] Wherein, mod represents the remainder operation, Q is the total number of cells of the serving cell and the neighboring cells of the serving cell, Q is an integer greater than or equal to 2 and less than 7; CID is an integer greater than or equal to 0.

[0038] In a possible implementation, the number of REs occupied by each of the zero-power reference signals is 2;

[0039] The distribution mode of the time-domain symbols where the 2 REs are located is: the first distribution mode, or, the second distribution mode;

[0040] Wherein, the first distribution mode is used to indicate that the 2 REs are located in 2 consecutive time-domain symbols;

[0041] The second distribution mode is used to indicate that the 2 REs are located in 1 time-domain symbol.

[0042] In a possible implementation, when the distribution mode of the time-domain symbols where the 2 REs are located is the second distribution mode, the time-domain symbols where the 2 REs are located are determined according to the cell identifier of the serving cell of the terminal device; wherein,

[0043] When CID × 2T < SumCR, the time-domain symbols where the 2 REs are located are the starting time-domain symbols;

[0044] When SumCR ≤ CID × 2T < 2 × SumCR, the time-domain symbols where the 2 REs are located are the 1st time-domain symbol after the starting time-domain symbol;

[0045] Wherein, CID is the cell identifier, SumCR is the total number of subcarriers of a time-frequency resource unit, T is the number of subcarrier intervals, T is an integer greater than or equal to 1 or less than or equal to 6. T is less than or equal to SumCR / Q.

[0046] In a possible implementation, when the distribution mode of the time-domain symbols where the 2 REs are located is the first distribution mode, the subcarrier offset between the first subcarrier and the second subcarrier where the 2 REs are located is 1 or 3 or 5; or,

[0047] When the distribution mode of the time-domain symbols where the 2 REs are located is the second distribution mode, the subcarrier offset between the first subcarrier and the second subcarrier where the 2 REs are located is 2 or 4 or 6.

[0048] In a possible implementation, in a time-frequency resource unit for transmitting the uplink signal, the number of zero-power reference signals is 2;

[0049] The subcarriers where the time-frequency resources of the 2 zero-power reference signals are located are the same or different.

[0050] In a possible implementation, when the subcarriers where the 2 zero-power reference signals are located are different, the subcarrier offset between the subcarriers where the 2 zero-power reference signals are located is 1 or 3 or 5.

[0051] In a possible implementation, the time-frequency resources of the zero-power reference signal include: P REs located on the to-be-processed time-domain symbol in a time-frequency resource unit for transmitting the uplink signal;

[0052] The frequency domain of the time-frequency resource unit includes 12 subcarriers; the subcarriers where the P REs are located are {i 1 , i 2 ,..., i P}; among the 12 subcarriers, the other subcarriers except the subcarriers where the P REs are located are {j 1 , j 2 ,…, j 12-P}; where P is an integer greater than or equal to 1 and less than 12;

[0053] The method further includes:

[0054] Obtain first data to be transmitted, where the first data is k - P data segments x 1 , x 2 ,..., x k-P , and each RE is used to carry data in 1 data segment;

[0055] Determine second data according to the first data and the DFT transform matrix W 12×k , where the second data x k-P+1 ,..., x k satisfies:

[0056]

[0057] Combine the first data and the second data into time-domain data x, where x = (x 1 , x 2 ,..., x k ) T ;

[0058] Perform DFT transform on the time-domain data x according to the DFT transform matrix W 12×k , to obtain frequency-domain data y; where y = (y1 , y 2 , y 3 , ..., y 8 , y 9 , y 10 , y 11 , y 12 ) T , the uplink signals on the P REs are all 0;

[0059] Use the frequency-domain data y as the uplink signal in the time-domain symbol to be processed;

[0060] where k is the number of time-domain symbols in the time-frequency resource unit, and k is greater than p.

[0061] In a possible implementation, the configuration information of the zero-power reference signal includes at least one of the following information:

[0062] In any time-frequency resource unit used to transmit the uplink signal, a configuration indication of whether the zero-power reference signal supports code division multiplexing packet CDM group; wherein, the configuration indication of whether the zero-power reference signal supports CDM group is used to indicate whether to configure the time-frequency resource where the zero-power reference signal is located according to the time-frequency resource where the DMRS in the uplink signal is located or the CDM configuration type corresponding to the DMRS;

[0063] The CDM configuration type of the DMRS; wherein, the CDM configuration type of the DMRS includes: the first CDM type, the second CDM type, and the third CDM type; wherein, the time-frequency resource of the DMRS is determined from the group resource set according to the CDM group ID corresponding to the DMRS, wherein the group resource set includes multiple group resources, and different CDM group IDs correspond to different group resources in the group resource set, and at least two group resources in the multiple group resources are in different time-domain symbols;

[0064] The configuration method of the zero-power reference signal supporting the CDM group; wherein, the configuration method includes: the first configuration method and the second configuration method; the RE occupied by the zero-power reference signal using the first configuration method is the same as the subcarrier where the RE occupied by the DMRS is located; the subcarrier where the zero-power reference signal using the second configuration method is located is the set of all subcarriers where the DMRSs of all CDM groups corresponding to the CDM configuration type are located, wherein all subcarriers where the DMRSs of all CDM groups are located are part of the subcarriers in the time-frequency resource unit used to transmit the uplink signal;

[0065] The starting time-domain symbol occupied by the zero-power reference signal of each CDM group;

[0066] The number of time-domain symbols occupied by the zero-power reference signal of each CDM group;

[0067] The number of group resource units in each group resource.

[0068] In a possible implementation, the subcarriers where the zero-power reference signal is located are part of the subcarriers of the time-frequency resource unit for transmitting the uplink signal.

[0069] In a possible implementation, the uplink signal further includes DMRS; the subcarriers where the DMRS is located are determined according to the CDM group corresponding to the DMRS;

[0070] Among them, the time-domain symbols and / or subcarriers where the DMRS of different CDM groups is located are different;

[0071] The time-frequency resource where the zero-power reference signal is located is determined according to the time-frequency resource of the DMRS or the CDM configuration type.

[0072] In a possible implementation, the configuration mode of the zero-power reference signal supporting the CDM group is the first configuration mode;

[0073] The CDM configuration type of the DMRS is the first CDM type or the second CDM type; among them, the subcarriers where the DMRS corresponding to different group IDs is located are different;

[0074] The identifier of the subcarriers where the zero-power reference signal is located is the same as the identifier of the subcarriers where the DMRS of the uplink signal is located.

[0075] In a possible implementation, the configuration mode of the zero-power reference signal supporting the CDM group is the second configuration mode;

[0076] The CDM configuration type of the DMRS is the first CDM type or the second CDM type; among them, the subcarriers where the DMRS corresponding to different group IDs is located are different;

[0077] The subcarriers where the zero-power reference signal is located include the subcarriers where the DMRS of all CDM groups corresponding to the CDM configuration type is located;

[0078] The starting time-domain symbol where the RE occupied by the zero-power reference signal is located is the first time-domain symbol after the time-domain symbol where the DMRS is located.

[0079] In a possible implementation, the configuration method of the zero-power reference signal supporting the CDM group is the second configuration method;

[0080] The CDM configuration type of the DMRS is the third CDM type;

[0081] The time-frequency resources where the zero-power reference signal is located include the set of the time-frequency resources where the DMRSs of all CDM groups corresponding to the CDM configuration type are located, excluding the time-frequency resources where the DMRS of the uplink signal is located. Among them, the time-frequency resources of the DMRS are determined from the group resource set according to the CDM group ID corresponding to the DMRS. The group resource set includes multiple group resources, and different CDM group IDs correspond to different group resources in the group resource set. At least two of the multiple group resources are in different time-domain symbols; all the subcarriers where the DMRSs of all CDM groups are located are part of the subcarriers in the time-frequency resource unit for transmitting the uplink signal.

[0082] Among them, the time-domain symbols where the DMRSs corresponding to at least two CDM groups supported by the third CDM type are located are different.

[0083] In a possible implementation, the CDM configuration type of the DMRS is the first CDM type or the second CDM type;

[0084] When the CDM configuration type of the DMRS is the first CDM type, the subcarriers where the zero-power reference signal is located include all subcarriers that satisfy the first condition, and the first condition is that the remainder of the subcarrier offset modulo 2 is equal to all subcarriers of the CDM group ID;

[0085] When the CDM configuration type of the DMRS is the second CDM type, the subcarriers where the zero-power reference signal is located include all subcarriers that satisfy the second condition, and the second condition is that the remainder of the subcarrier offset modulo 6 is equal to all subcarriers of the CDM group ID * 2 or the CDM group ID * 2 + 1.

[0086] In a possible implementation, each group resource includes at least two group resource units;

[0087] The at least two group resource units occupy the same time-domain symbol, and the at least two group resource units occupy different subcarriers;

[0088] Each group resource unit occupies at least one time-domain symbol;

[0089] Each group resource unit occupies at least one subcarrier;

[0090] Among them, all subcarriers where the group resource units corresponding to all CDM groups are located are part of the subcarriers in the time-frequency resource unit.

[0091] In a possible implementation, the time-frequency resource unit for transmitting the uplink signal including the DMRS is a resource block (RB), and any one of the RBs includes 2 or 3 or 4 group resource units;

[0092] Each group resource unit occupies 2 consecutive time-domain symbols;

[0093] Each group resource unit occupies 2 consecutive subcarriers;

[0094] The number of time-domain symbols occupied by the group resource units of all CDM group IDs is 6;

[0095] The number of subcarriers occupied by the group resource units of all CDM group IDs is 4.

[0096] In a possible implementation, it is characterized in that, in the time-frequency resource unit for transmitting the uplink signal, the difference between the transmission powers of different time-domain symbols is less than a preset deviation power threshold.

[0097] In a possible implementation, in the time-frequency resource for transmitting the uplink signal, the transmission powers of different time-domain symbols are equal.

[0098] In a possible implementation, the time-frequency resource unit for transmitting the uplink signal is a resource block (RB); in any target time-domain symbol including the RE occupied by the zero-power reference signal, the transmission power of each valid RE is the transmission power of the target time-domain symbol divided by the number of valid REs;

[0099] Among them, the valid REs are the other REs on the target time-domain symbol except for the REs occupied by the zero-power reference signal.

[0100] In a possible implementation, the REs on the target time-domain symbol where the zero-power reference signal is located except for the REs occupied by the zero-power reference signal are data REs for carrying data.

[0101] In a second aspect, an embodiment of the present application provides an uplink transmission method, including:

[0102] The network device receives an uplink signal including a zero-power reference signal sent by the terminal device, where, in the time-frequency resource for transmitting the uplink signal, the transmission power of the uplink signal within the time-frequency resource range of the zero-power reference signal is zero;

[0103] Perform channel estimation based on the uplink signal received in the time-frequency resources of the zero-power reference signal;

[0104] Demodulate the received uplink signal according to the result of the channel estimation.

[0105] Wherein, the network device may be a base station.

[0106] In a possible implementation manner, before the network device receives the uplink signal including the zero-power reference signal, it includes:

[0107] Send configuration information to the terminal device, where the configuration information is used to indicate the pattern of the time-frequency resources of the zero-power reference signal.

[0108] In a possible implementation manner, the performing channel estimation based on the uplink signal received in the time-frequency resources of the zero-power reference signal includes:

[0109] Obtain the uplink signal received in the time-frequency resources of the zero-power reference signal according to the configuration information.

[0110] In a possible implementation manner, the uplink signal further includes a demodulation and modulation reference signal DMRS, and the time-frequency resources of the zero-power reference signal do not overlap with the time-frequency resources of the DMRS.

[0111] In a possible implementation manner, the zero-power reference signal is the zero-power reference signal corresponding to the serving cell of the terminal device; the time-frequency resources of the zero-power reference signals corresponding to each cell in the cell group composed of the serving cell and the neighboring cells of the serving cell do not overlap with each other.

[0112] In a possible implementation manner, in a time-frequency resource unit for transmitting the uplink signal, the number of the zero-power reference signals is one or more;

[0113] Wherein, the time domain of the time-frequency resource unit includes: one time slot, or one mini-slot, or at least two time domain symbols.

[0114] In a possible implementation manner, the number of REs occupied by each zero-power reference signal is one or more.

[0115] In a possible implementation manner, the configuration information of the zero-power reference information includes at least one of the following information:

[0116] In any time-frequency resource unit for transmitting the uplink signal, the number of the zero-power reference signals,

[0117] The number of resource elements (REs) occupied by each of the zero-power reference signals;

[0118] The starting time-domain symbol of the time-domain symbol range allowed to be occupied by each of the zero-power reference signals;

[0119] When the number of REs occupied by each of the zero-power reference signals is 2, the distribution manner of the time-domain symbols where the 2 REs are located;

[0120] At least one subcarrier where each of the zero-power reference signals is located;

[0121] When the number of REs occupied by each of the zero-power reference signals is 2, the subcarrier offset between the first subcarrier and the second subcarrier where the 2 REs are located;

[0122] When the number of zero-power reference signals is 2, an indication of whether the subcarriers where the 2 zero-power reference signals are located are the same;

[0123] When the subcarriers where the 2 zero-power reference signals are located are different, the subcarrier offset between the subcarriers where the 2 zero-power reference signals are located.

[0124] In a possible implementation, when the number of REs occupied by each of the zero-power reference signals is 1, the time-domain symbol where the 1 RE is located is the starting time-domain symbol of the time-domain symbol range allowed to be occupied by each of the zero-power reference signals;

[0125] When the number of REs occupied by each of the zero-power reference signals is 2, the time-domain symbols where the 2 REs are located are at least one of the 2 time-domain symbols starting from the starting time-domain symbol;

[0126] Wherein, the uplink signal further includes DMRS; the starting time-domain symbol of the time-domain symbol allowed to be occupied by each of the zero-power reference signals is any one of the following:

[0127] The first time-domain symbol after the time-domain symbol where the time-frequency resource of the DMRS is located, or,

[0128] The middle time-domain symbol in the time-frequency resource unit; wherein, the middle time-domain symbol is different from the time-domain symbol where the time-frequency resource of the DMRS is located, or,

[0129] The second time-domain symbol after the first time-domain symbol where the time-frequency resource of the DMRS is located.

[0130] In a possible implementation, the number of REs occupied by the zero-power reference signal of the serving cell of the terminal device is 1, and the number of REs occupied by the zero-power reference signal of an adjacent cell of the serving cell of the terminal device is 1;

[0131] The first subcarriers corresponding to the serving cell and the neighboring cells of the serving cell are different, and the first subcarriers are the subcarriers where zero-power reference signals are located.

[0132] In a possible implementation, the number of REs occupied by the zero-power reference signal corresponding to the target cell is 2, and the target cell is any one of the serving cell of the terminal device and the neighboring cells of the serving cell;

[0133] The first subcarrier and the second subcarrier corresponding to the target cell are not adjacent to each other, and the first subcarrier and the second subcarrier are the subcarriers where the 2 REs corresponding to the target cell are located;

[0134] The subcarriers where the REs occupied by the zero-power reference signals corresponding to different target cells in the same time domain symbol are different.

[0135] In a possible implementation, the time-frequency resource unit for transmitting the uplink signal includes 12 subcarriers; the frequency domain offset FreqOffset of the first subcarrier corresponding to any target cell in the serving cell and the neighboring cells of the serving cell is determined according to the cell identifier CID of the target cell, where,

[0136] When mod(CID, Q) < 6, FreqOffset = mod(CID, Q) × 2;

[0137] When mod(CID, Q) = 6, FreqOffset = 11;

[0138] Where, mod represents the remainder operation, Q is the total number of cells in the serving cell and the neighboring cells of the serving cell, Q is an integer greater than or equal to 2 and less than 7; CID is an integer greater than or equal to 0.

[0139] In a possible implementation, the number of REs occupied by each zero-power reference signal is 2;

[0140] The distribution manner of the time domain symbols where the 2 REs are located is: the first distribution manner, or, the second distribution manner;

[0141] Wherein, the first distribution manner is used to indicate that the 2 REs are located in 2 consecutive time domain symbols;

[0142] The second distribution manner is used to indicate that the 2 REs are located in 1 time domain symbol.

[0143] When CID × 2T ≥ 2 × SumCR, the distribution manner of the time domain symbols where the 2 REs are located is the first distribution manner.

[0144] In a possible implementation, when the distribution mode of the time domain symbols where the two REs are located is the second distribution mode, the time domain symbols where the two REs are located are determined according to the cell identifier of the serving cell of the terminal device; wherein,

[0145] When CID × 2T < SumCR, the time domain symbols where the two REs are located are the starting time domain symbols;

[0146] When SumCR ≤ CID × 2T < 2 × SumCR, the time domain symbols where the two REs are located are the first time domain symbol after the starting time domain symbol;

[0147] wherein, CID is the cell identifier, SumCR is the total number of subcarriers of a time-frequency resource unit, T is the number of subcarrier intervals, and T is an integer greater than or equal to 1 or less than or equal to 6.

[0148] In a possible implementation, when the distribution mode of the time domain symbols where the two REs are located is the first distribution mode, the subcarrier offset between the first subcarrier and the second subcarrier where the two REs are located is 1 or 3 or 5; or,

[0149] When the distribution mode of the time domain symbols where the two REs are located is the second distribution mode, the subcarrier offset between the first subcarrier and the second subcarrier where the two REs are located is 2 or 4 or 6.

[0150] In a possible implementation, in a time-frequency resource unit for transmitting the uplink signal, the number of zero-power reference signals is 2; the time-frequency resources where the two zero-power reference signals are located may be the same or different subcarriers.

[0151] In a possible implementation, when the subcarriers where the two zero-power reference signals are located are different, the subcarrier offset between the subcarriers where the two zero-power reference signals are located is 1 or 3 or 5.

[0152] In a possible implementation, the configuration information of the zero-power reference signal includes at least one of the following information:

[0153] In any time-frequency resource unit for transmitting the uplink signal, a configuration indication of whether the zero-power reference signal supports code division multiplexing packet CDM group; wherein, the configuration indication of whether the zero-power reference signal supports CDM group is used to indicate whether to configure the time-frequency resource where the zero-power reference signal is located according to the time-frequency resource where the DMRS in the uplink signal is located or the CDM configuration type corresponding to the DMRS;

[0154] The CDM configuration type of the DMRS; wherein, the CDM configuration type of the DMRS includes: a first CDM type, a second CDM type, and a third CDM type; wherein, the time-frequency resource of the DMRS is determined from a group resource set according to the CDM group ID corresponding to the DMRS, wherein the group resource set includes multiple group resources, different CDM group IDs correspond to different group resources in the group resource set, and at least two of the multiple group resources are in different time domain symbols;

[0155] Configuration methods for zero-power reference signals supporting CDM groups; wherein, the configuration methods include: a first configuration method and a second configuration method; the resource elements (REs) occupied by the zero-power reference signals using the first configuration method are on the same subcarriers as the REs occupied by the DMRS; the subcarriers where the zero-power reference signals using the second configuration method are located are the set of all subcarriers where the DMRSs of all CDM groups corresponding to the CDM configuration type are located, wherein the subcarriers where the DMRSs of all CDM groups are located are partial subcarriers in the time-frequency resource units for transmitting uplink signals;

[0156] The starting time domain symbol occupied by the zero-power reference signal of each CDM group;

[0157] The number of time domain symbols occupied by the zero-power reference signal of each CDM group;

[0158] The number of group resource units in each group resource.

[0159] In a possible implementation, the subcarriers where the zero-power reference signals are located are partial subcarriers of the time-frequency resource units for transmitting uplink signals.

[0160] In a possible implementation, the uplink signal further includes a DMRS; the subcarriers where the DMRS is located are determined according to the CDM group corresponding to the DMRS;

[0161] Wherein, the time domain symbols and / or subcarriers where the DMRSs of different CDM groups are located are different;

[0162] The time-frequency resource where the zero-power reference signal is located is determined according to the time-frequency resource of the DMRS or the CDM configuration type.

[0163] In a possible implementation, the configuration method for zero-power reference signals supporting CDM groups is the first configuration method;

[0164] The CDM configuration type of the DMRS is the first CDM type or the second CDM type; among them, the subcarriers where the DMRSs corresponding to different group IDs are located are different;

[0165] The identifier of the subcarrier where the zero-power reference signal is located is the same as the identifier of the subcarrier where the DMRS of the uplink signal is located.

[0166] In a possible implementation, the configuration method of the zero-power reference signal supporting the CDM group is the second configuration method;

[0167] The CDM configuration type of the DMRS is the first CDM type or the second CDM type; among them, the subcarriers where the DMRSs corresponding to different group IDs are located are different;

[0168] The subcarriers where the zero-power reference signal is located include the subcarriers where the DMRSs of all CDM groups corresponding to the CDM configuration type are located;

[0169] The starting time-domain symbol of the RE occupied by the zero-power reference signal is the first time-domain symbol after the time-domain symbol where the DMRS is located.

[0170] In a possible implementation, the configuration method of the zero-power reference signal supporting the CDM group is the second configuration method;

[0171] The CDM configuration type of the DMRS is the third CDM type;

[0172] The time-frequency resource where the zero-power reference signal is located includes the set of the time-frequency resources where the DMRSs of all CDM groups corresponding to the CDM configuration type are located excluding the time-frequency resource where the DMRS of the uplink signal is located, where the time-frequency resource of the DMRS is determined from the group resource set according to the CDM group ID corresponding to the DMRS, where the group resource set includes multiple group resources, different CDM group IDs correspond to different group resources in the group resource set, and at least two of the multiple group resources are located in different time-domain symbols; all the subcarriers where the DMRSs of all CDM groups are located are part of the subcarriers in the time-frequency resource unit for transmitting the uplink signal.

[0173] Among them, the time-domain symbols where the DMRSs corresponding to at least two CDM groups supported by the third CDM type are located are different;

[0174] In a possible implementation, the CDM configuration type of the DMRS is the first CDM type or the second CDM type;

[0175] When the CDM configuration type of the DMRS is the first CDM type, the subcarriers where the zero-power reference signal is located include all subcarriers that satisfy the first condition, and the first condition is that the remainder of the subcarrier offset modulo 2 is equal to all subcarriers of the CDM group ID;

[0176] When the CDM configuration type of the DMRS is the second CDM type, the subcarriers where the zero-power reference signal is located include all subcarriers that satisfy the second condition, and the second condition is that the remainder of the subcarrier offset modulo 6 is equal to all subcarriers of the CDM group ID * 2 and the CDM group ID * 2 + 1.

[0177] In a possible implementation, each group resource includes at least two group resource units;

[0178] The time-domain symbols occupied by the at least two group resource units are the same, and the subcarriers occupied by the at least two group resource units are different;

[0179] Each group resource unit occupies at least one time-domain symbol; each group resource unit occupies at least one subcarrier.

[0180] In a possible implementation, the time-frequency resource unit for transmitting the uplink signal including the DMRS is a resource block (RB), and any one of the RBs includes 2 or 3 or 4 group resource units;

[0181] Each group resource unit occupies 2 consecutive time-domain symbols;

[0182] Each group resource unit occupies 2 consecutive subcarriers;

[0183] The number of time-domain symbols occupied by the group resource units of all CDM group IDs is 6;

[0184] The number of subcarriers occupied by the group resource units of all CDM group IDs is 4.

[0185] In a third aspect, an embodiment of the present application further provides a method for transmitting a reference signal, including:

[0186] A terminal device sends a DMRS to a network device;

[0187] Wherein, the time-frequency resource of the DMRS is determined from a group resource set according to a first identifier corresponding to the terminal device, wherein the group resource set includes a plurality of group resources, different first identifiers correspond to different group resources in the group resource set, and at least two of the plurality of group resources are in different time-domain symbols.

[0188] Among them, the DMRS can be used by a network device to perform channel estimation, interference removal, and demodulation of data carried in the uplink signal on the uplink signal including the DMRS, etc.

[0189] In a possible implementation, the first identifier is the identifier of the CDM group corresponding to the terminal device.

[0190] In a possible implementation, the time domain symbol and / or subcarrier where the DMRS is located are determined according to the identifier of the CDM group corresponding to the terminal device and the CDM configuration type;

[0191] When the CDM configuration type is the third CDM type, the time domain symbol where the DMRS of the first CDM group is located is different from the time domain symbol where the DMRS of the second CDM group is located. The first CDM group is the CDM group corresponding to the terminal device, and the second CDM group is at least one other CDM group among at least two CDM groups including the first CDM group supported by the third CDM type.

[0192] In a possible implementation, each group resource includes at least two group resource units;

[0193] The time domain symbols occupied by the at least two group resource units are the same, and the subcarriers occupied by the at least two group resource units are different;

[0194] Each group resource unit occupies at least one time domain symbol; each group resource unit occupies at least one subcarrier.

[0195] In a possible implementation, the time-frequency resource unit for transmitting the uplink signal including the DMRS is a resource block (RB), and any one of the RBs includes 2 or 3 or 4 group resource units;

[0196] Each group resource unit occupies 2 consecutive time domain symbols;

[0197] Each group resource unit occupies 2 consecutive subcarriers;

[0198] The number of time domain symbols occupied by the group resource units of all CDM group IDs is 6;

[0199] The number of subcarriers occupied by the group resource units of all CDM group IDs is 4.

[0200] In a fourth aspect, an embodiment of the present application further provides a method for transmitting a reference signal, including:

[0201] The network device receives the DMRS sent by the terminal device.

[0202] Among them, the time-frequency resources of the DMRS are determined from the group resource set according to the first identifier corresponding to the terminal device. Among them, the group resource set includes multiple group resources, different first identifiers correspond to different group resources in the group resource set, and at least two of the multiple group resources are in different time domain symbols.

[0203] In a possible implementation manner, the first identifier is the identifier of the CDM group corresponding to the terminal device.

[0204] In a possible implementation manner, the time domain symbol and / or subcarrier where the DMRS is located are determined according to the identifier of the CDM group corresponding to the terminal device and the CDM configuration type;

[0205] When the CDM configuration type is the third CDM type, the time domain symbol where the DMRS corresponding to the first CDM group is located is different from the time domain symbol where the DMRS corresponding to the second CDM group is located. The first CDM group is the CDM group corresponding to the terminal device, and the second CDM group is at least one other CDM group among at least two CDM groups including the first CDM group supported by the third CDM type.

[0206] In a possible implementation manner, each group resource includes at least two group resource units;

[0207] The at least two group resource units occupy the same time domain symbol, and the at least two group resource units occupy different subcarriers;

[0208] Each group resource unit occupies at least one time domain symbol; each group resource unit occupies at least one subcarrier.

[0209] Among them, all the subcarriers where the group resource set is located are part of the subcarriers in the time-frequency resource unit.

[0210] In a possible implementation manner, the time-frequency resource unit for transmitting the uplink signal including the DMRS is a resource block (RB), and any one of the RBs includes 2 or 3 or 4 group resource units;

[0211] Each group resource unit occupies 2 consecutive time domain symbols;

[0212] Each group resource unit occupies 2 consecutive subcarriers;

[0213] The number of time-domain symbols occupied by the group resource units of all CDM group IDs is 6;

[0214] The number of subcarriers occupied by the group resource units of all CDM group IDs is 4.

[0215] In another aspect, an embodiment of the present application further provides a communication device on the terminal device side. This device can be a terminal device or a chip within the terminal device. The device has the functions of the terminal device involved in any aspect of the above first aspect. This function can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0216] In a possible implementation manner, when the device is a terminal device, the terminal device includes: a processor and a transceiver. The processor is configured to support the terminal device to execute the corresponding functions in the above method. The transceiver is used to support the communication between the terminal device and the network device, and send the information or instructions involved in the above method to the network device. Optionally, the terminal device may further include a memory, and the memory is used to be coupled with the processor to store the necessary program instructions and data of the terminal device.

[0217] In a possible implementation manner, the device includes: a processor, a baseband circuit, a radio frequency circuit, and an antenna. The processor is used to control the functions of each circuit part. The baseband circuit is used to generate various signaling and messages, such as RRC messages, etc. After being subjected to analog conversion, filtering, amplification, up-conversion, etc. through the radio frequency circuit, it is sent to the network device through the antenna. Optionally, the device may further include a memory, which stores the necessary program instructions and data of the terminal device.

[0218] In a possible implementation manner, the device may include a processor and a modem. The processor can be used for instructions or an operating system to control the functions of the terminal device. The modem can encapsulate, encode and decode, modulate and demodulate, equalize, etc. the data according to the protocol to generate a radio frame to support the terminal device to execute the corresponding functions in the above first aspect.

[0219] In a possible implementation, when the device is a chip in a terminal device, the chip includes a processing module and a transceiver module. The processing module can be, for example, a processor. For example, this processor is used to generate various messages and signaling, and after encapsulating various messages according to the protocol, perform processing such as encoding, modulation, and amplification. The processor can also be used for demodulation, decoding, and decompression to obtain signaling and messages. The transceiver module can be, for example, an input / output interface, a pin, or a circuit on the chip. The processing module can execute the computer-executable instructions stored in the storage unit to support the terminal device in performing the corresponding functions in the above method. Optionally, the storage unit can be a storage unit within the chip, such as a register or a cache. The storage unit can also be a storage unit outside the chip within the terminal device, such as a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM), etc.

[0220] In a possible implementation, the device includes a processor, which is used to couple with a memory, read the instructions in the memory, and execute the method described in any one of the above first aspects according to the instructions. The memory can be located inside the processor or outside the processor. In an example, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the communication device executes the method in the first aspect and its various possible implementations.

[0221] In another aspect, the embodiments of the present application further provide a communication device on the terminal device side. The device can be a network device or a chip within a network device. The device has the function of implementing any aspect related to the network device in the above second aspect, third aspect, sixth aspect to the [n]th aspect, eighteenth aspect to twenty-first aspect. This function can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0222] In a possible implementation, when the device is a network device, the network device includes a processor and a transceiver. The processor is configured to support the network device in performing the corresponding functions in the above method. The transceiver is used to support communication between the network device and the terminal device, and send the information or instructions involved in the above method to the terminal device. Optionally, the network device can further include a memory, which is used to couple with the processor and stores the necessary program instructions and data of the network device.

[0223] In a possible implementation, the device includes: a processor, a baseband circuit, a radio frequency circuit, and an antenna. The processor is used to control the functions of each circuit part. The baseband circuit is used to generate various signaling and messages, such as RRC messages. After being processed by analog conversion, filtering, amplification, up-conversion, etc. via the radio frequency circuit, they are sent to the terminal device via the antenna. Optionally, the device may further include a memory that stores the necessary program instructions and data of the network device.

[0224] In a possible implementation, the device may include a processor and a modem. The processor may be used for instructions or an operating system to control the functions of the network device. The modem may encapsulate, encode, decode, modulate, demodulate, equalize, etc. the data according to the protocol to generate a wireless frame to support the network device to execute the corresponding functions in the second aspect above.

[0225] In a possible implementation, when the device is a chip in a network device, the chip includes: a processing module and a transceiver module. The processing module may be, for example, a processor. For example, this processor is used to generate various messages and signaling, and after encapsulating various messages according to the protocol, perform encoding, modulation, amplification, etc. The processor may also be used to obtain signaling and messages after demodulation, decoding, and de-encapsulation. The transceiver module may be, for example, an input / output interface, a pin, or a circuit on the chip, etc. The processing module may execute the computer-executable instructions stored in the storage unit to support the network device to execute the corresponding functions in the above method. Optionally, the storage unit may be a storage unit within the chip, such as a register, a cache, etc. The storage unit may also be a storage unit outside the chip within the network device, such as a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM), etc.

[0226] In a possible implementation, the device includes a processor that is used to be coupled with a memory, read the instructions in the memory, and execute any of the methods in the second aspect above according to the instructions. The memory may be located inside the processor, may also be located outside the processor, and may also be located outside the device.

[0227] In another aspect, the present application provides a computer-readable storage medium in which instructions are stored. The instructions may be executed by one or more processors on a processing circuit. When it runs on a computer, it causes the computer to execute the methods in any one of the first aspect to the second aspect above or any of their possible implementation manners.

[0228] In another aspect, a computer program product including instructions is provided. When running on a computer, the computer program product causes the computer to execute the method in any one of the above-mentioned first aspect to the second aspect or any possible implementation manner thereof.

[0229] In another aspect, the present application provides a chip system. The chip system includes a processor for supporting the execution of the method in any one of the above-mentioned first aspect to the second aspect or any possible implementation manner thereof, such as generating or processing the data and / or information involved in the above aspects. In a possible design, the chip system further includes a memory for storing the necessary program instructions and data of the data sending device. The chip system may be composed of chips or may include chips and other discrete devices.

[0230] In another aspect, an embodiment of the present application provides a communication system. The system includes at least one terminal device and a network device involved in the above aspects. Description of the Drawings

[0231] Figure 1 Schematic diagram of the application scenario involved in the embodiment of the present application Figure 1 ;

[0232] Figure 2 Interaction process of the uplink transmission method provided by the embodiment of the present application Figure 1 ;

[0233] Figures 3A to 3G Schematic diagram of the pattern of the zero-power reference signal provided by the embodiment of the present application Figure 1 to seven;

[0234] Figure 4 Schematic diagram of the time-frequency resource distribution of the zero-power reference signal in a multi-cell scenario provided by the embodiment of the present application Figure 1 ;

[0235] Figures 5A to 7B Schematic diagram of the pattern of the zero-power reference signal in a multi-cell scenario provided by the embodiment of the present application Figure 1 to six;

[0236] Figure 8A Schematic diagram of the time-frequency resource distribution of the zero-power reference signal in a multi-cell scenario provided by the embodiment of the present application Figure 2 ;

[0237] Figure 8B Schematic diagram three of the time-frequency resource distribution of the zero-power reference signal in a multi-cell scenario provided by the embodiment of the present application

[0238] Figures 9A to 9D Schematic diagrams nine to twelve of the pattern of the zero-power reference signal in a multi-cell scenario provided by the embodiment of the present application

[0239] Figure 10 A schematic diagram of a mapping process involved in an embodiment of the present application;

[0240] Figure 11 A schematic diagram of a group of subcarriers where DMRS configured based on CDM group is located;

[0241] Figures 12 to 15 A schematic diagram of a pattern of a zero-power reference signal configured in a first configuration manner provided in an embodiment of the present application;

[0242] Figures 16 to 22 A schematic diagram of a pattern of a zero-power reference signal configured using a second configuration method provided in an embodiment of the present application;

[0243] Figure 23 A schematic diagram of a communication device provided in an embodiment of the present application Figure 1 ;

[0244] Figure 24 A schematic diagram of the structure of the communication device provided in the embodiment of the present application Figure 2 ;

[0245] Figure 25 A schematic diagram of the structure of the terminal device provided in the embodiment of the present application Figure 1 ;

[0246] Figure 26 A schematic diagram of the structure of the network device provided in the embodiment of the present application Figure 2 . DETAILED DESCRIPTION

[0247] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are not intended to limit this application.

[0248] Embodiment 1

[0249] The embodiment of the present application provides an uplink transmission method, which can be applied to a communication network. A plurality of communication devices may be included in the communication network. In one example, the communication network may include a network device and a terminal device (user equipment, UE), wherein the network device may receive an uplink signal sent by one or more terminal devices on a pre-planned time-frequency resource. When the uplink signal sent by the terminal device to the network device is interfered, the demodulation performance of the network device will be reduced.

[0250] Figure 1 This is a schematic diagram of the application scenario involved in the embodiment of the present application. Figure 1 .like Figure 1As shown, exemplarily, some UEs in the network can be within the coverage of multiple cell gNBs simultaneously. At this time, there will be aliasing and interference of transmission information in the uplink and downlink transmissions of different UEs. Taking the uplink transmission as an example, when the signal of the left-cell UE's uplink transmission reaches Figure 1 the left base station in the middle, this left base station will also receive the uplink signal sent by the adjacent right-cell UE to Figure 1 the right base station in the middle. At this time, it will interfere with the signal of the left-cell UE, that is, there is a large interference signal aliased in the received signal of the left base station, which may cause the signal of the left-cell UE to not be accurately demodulated.

[0251] Next, taking the network device as a base station as an example, the uplink transmission method provided in the embodiments of the present application will be described. In the embodiments of the present application, the network device can be a base station in an LTE communication system or a base station (base station, or g Node B, abbreviated as gNB) in a New Radio Access Technology (NR) system.

[0252] Figure 2 It is a schematic diagram of the interaction process of the uplink transmission method provided in the embodiments of the present application. As Figure 2 shown, the steps of the embodiments of the present application may include:

[0253] S101, the terminal device sends an uplink signal including a zero-power reference signal, where, in the time-frequency resource used for sending the uplink signal, the transmit power of the uplink signal within the time-frequency resource range of the zero-power reference signal is zero.

[0254] Among them, the zero-power reference signal (Zero Power Channel State Information Reference Signal, ZP CSI-RS) can be used for uplink interference measurement. Since no data is actually sent on the time-frequency resource of the zero-power reference signal, it can also be called mute RE.

[0255] S102, the base station performs interference estimation based on the uplink signal received in the time-frequency resource of the zero-power reference signal

[0256] Among them, the base station can estimate the interference of neighboring cells based on the uplink signal received in the time-frequency resource of the zero-power reference signal.

[0257] S103, the base station demodulates the received uplink signal according to the result of channel estimation.

[0258] Among them, the base station can perform interference suppression and data demodulation on the received uplink signal according to the result of neighboring cell interference estimation.

[0259] In an embodiment of the present application, for example, a terminal device may transmit an uplink signal in a Physical Uplink Shared Channel (PUSCH). In one example, the time-frequency resource for transmitting the uplink signal may be the first resource in the PUSCH, and the first resource may include the second resource corresponding to a zero-power reference signal. When the terminal device transmits an uplink signal on the first resource, the transmission power of the uplink signal within the range of the second resource may be configured to be zero.

[0260] In an embodiment of the present application, before step S101, the following may further be included:

[0261] S201, the base station sends configuration information of the zero-power reference signal to the terminal device.

[0262] Wherein, the configuration information is used to identify the range of the time-frequency resource of the zero-power reference signal.

[0263] In an embodiment of the present application, the gNB may send the configuration information to the UE through a Radio Resource Control (RRC) message or Downlink Control Information (DCI) signaling. For example, a new field may be directly added to the message or the redundant status of an existing field may be utilized, or the UE may be indirectly notified by carrying a parameter indicating whether the zero-power reference signal is configured. In one example, whether to enable the zero-power reference signal may be configured through the RRC signaling muteReInterEstimateFlag = {0,1}.

[0264] In an embodiment of the present application, when the base station discovers through interference estimation based on other signals that the uplink interference measurement result is greater than a preset start measurement threshold, the base station may instruct the terminal device to configure a zero-power reference signal in the uplink signal. Exemplarily, the other signal may be a Sounding Reference Signal (SRS), a Demodulation Reference Signal (DMRS), and the uplink interference measurement result may be at least one parameter such as RSRP, SINR, etc.

[0265] S202, the terminal device generates an uplink signal according to the configuration information.

[0266] It should be noted that S201 is not a step that must be executed in the embodiments of the present application. In the embodiments of the present application, the terminal device may also obtain the configuration information of the zero-power reference signal in other ways. In an alternative embodiment, the terminal device may pre-configure the configuration information of the zero-power reference signal. For example, the determination method of the time-frequency resources of the zero-power reference signal may be configured for the terminal device at the time of factory. In one example, the terminal device may pre-configure the determination method of determining the range of the time-frequency resources of the zero-power reference signal according to the cell identifier of the serving cell. Correspondingly, the base station may also pre-configure at the time of factory or obtain the configuration information from the network management device, as long as the ranges of the time-frequency resources of the zero-power reference signal determined by the configuration information of the terminal device and the base station are consistent.

[0267] In the embodiments of the present application, for example, the time-frequency resources for transmitting the uplink signal may include at least one resource block (RB), and the configuration information may be used to identify at least one of the following information: in any RB for transmitting the uplink signal, the number of resource elements (REs) occupied by the zero-power reference signal, the subcarrier identifier where it is located, and the position of the corresponding time domain symbol.

[0268] In one example, the uplink signal may further include a demodulation reference signal DMRS, and the configuration information may include: the offset of the time domain symbol where the time-frequency resources of the zero-power reference signal are located relative to the time domain symbol where the time-frequency resources of the DMRS are located. The zero-power reference signal may be set adjacent to the DMRS or at a position far from the DMRS. When the time domain symbol of the zero-power reference signal is located at the time domain symbol in the middle of the time-frequency resources of the uplink signal, the signal received in the time-frequency resources of the zero-power reference signal can more accurately reflect the interference received by the channel of the uplink signal that changes with time domain. When the time domain symbol where the time-frequency resources of the zero-power reference signal are located is adjacent to the DMRS in the time-frequency resources of the uplink signal, the time-frequency resources of the zero-power reference signal are located at a relatively early position in the time domain of the time-frequency resources of the uplink signal, and the base station can estimate the channel earlier, improving the processing rate of demodulation. The distribution of the time-frequency resources of the zero-power reference signal will be described in detail in other embodiments of the present application.

[0269] In an embodiment of the present application, in step S102, the base station may, according to the time-frequency resource range of the zero-power reference signal identified by the configuration information, then obtain, from the received uplink signal, the uplink signal received in the time-frequency resource of the zero-power reference signal. Taking one RB in the time-frequency resource for transmitting the uplink signal as an example, the base station may obtain the uplink signal received in the time-frequency resource of the zero-power reference signal and estimate the channel corresponding to the entire RB. Then, in step S103, the base station may, according to the result of the channel estimation, perform interference signal and noise removal processing on the uplink signal received in other REs in each RB except for the REs occupied by the zero-power reference signal, and then demodulate the uplink signal after the interference signal and noise removal processing.

[0270] In practical applications, during the uplink transmission process, the signal of the target UE received by the gNB may be interfered by the transmission signals of other UEs in neighboring cells, especially the interference to the edge UEs in this cell is more serious because the signal sent by the edge user arrives at the gNB with a very weak received signal after long-distance transmission loss, resulting in a greater interference impact.

[0271] The embodiment of the present application can solve the problem of inaccurate interference measurement during uplink transmission, improve the interference measurement and uplink performance of the uplink, enhance the uplink coverage ability, and improve the interference measurement ability of UEs located in the edge area of the cell.

[0272] In the embodiment of the present application, when the terminal device sends an uplink signal containing a zero-power reference signal, it actually does not send a signal in the time-frequency resource of the zero-power reference signal. Therefore, when the base station receives the uplink signal in the time-frequency resource of the uplink signal, the signal received in the time-frequency resource range of the zero-power reference signal is actually generated by interference. Based on this, the base station may estimate the channel for transmitting the uplink signal according to the signal received in the time-frequency resource range of the zero-power reference signal, and eliminate the interference during the uplink transmission based on the result of the channel estimation, thereby being able to improve the demodulation performance and transmission rate of the uplink transmission.

[0273] Embodiment 2

[0274] The embodiment of the present application provides various optional implementation manners for the time-frequency resource range of the zero-power reference signal. The implementation manners of the time-frequency resource of the zero-power reference signal are illustrated by way of example below.

[0275] In an embodiment of the present application, for example, the time-frequency resources for transmitting uplink signals may include at least one time-frequency resource unit in a Physical Uplink Shared Channel (PUSCH). Each time-frequency resource unit may include a plurality of Resource Elements (REs). The time domain of each time-frequency resource unit may include: one time slot, or one mini-slot, or at least two time domain symbols. The frequency domain of each time-frequency resource unit may include a plurality of subcarriers, which may be 12 subcarriers in one example.

[0276] In an alternative embodiment, the time-frequency resource unit may be a Resource Block (RB). In one example, the time domain of each RB may include 14 time domain symbols of one time slot, the frequency domain of each RB may include 12 subcarriers, and each RB may include 12 * 14 REs. In an embodiment of the present application, the time-frequency resource unit may also be a Physical Resource Block (PRB).

[0277] It should be noted that, by way of example, the time domain offset of any s-th time domain symbol in the time-frequency resource unit relative to the first time domain symbol in the time-frequency resource unit is s - 1, and the frequency domain offset of any f-th subcarrier in the time-frequency resource unit relative to the first subcarrier in the time-frequency resource unit is f - 1. For example, the time domain offset of the first time domain symbol in the time-frequency resource unit is 0, the time domain offset of the second time domain symbol is 1, the frequency domain offset of the first subcarrier is 0, and the frequency domain offset of the third subcarrier is 2.

[0278] In an embodiment of the present application, the set of REs occupied by the zero-power reference signal in each time-frequency resource unit may be referred to as the pattern of the zero-power reference signal. Embodiments of the present application will provide various embodiments of the pattern of the zero-power reference signal.

[0279] In an embodiment of the present application, the configuration information of the zero-power reference signal may be used to indicate the pattern of the zero-power reference signal in each time-frequency resource unit. By way of example, the configuration information of the zero-power reference information includes at least one of the following information:

[0280] In any time-frequency resource unit for transmitting the uplink signal, the number of zero-power reference signals,

[0281] The number of Resource Elements (REs) occupied by each zero-power reference signal;

[0282] The starting time domain symbol of the time domain symbol range allowed to be occupied by each zero-power reference signal;

[0283] When the number of REs occupied by each zero-power reference signal is 2, the distribution manner of the time-domain symbols where the 2 REs are located;

[0284] At least one subcarrier where each zero-power reference signal is located;

[0285] When the number of REs occupied by each zero-power reference signal is 2, the subcarrier interval amount between the first subcarrier and the second subcarrier where the 2 REs are located;

[0286] When the number of zero-power reference signals is 2, an indication of whether the subcarriers where the 2 zero-power reference signals are located are the same;

[0287] When the subcarriers where the 2 zero-power reference signals are located are different, the subcarrier interval amount between the subcarriers where the 2 zero-power reference signals are located.

[0288] Table 1 is a set of illustrations of various parameters and their value ranges in the configuration information.

[0289] Table 1

[0290]

[0291]

[0292] Among them, Single represents 1, and Double represents 2.

[0293] In the embodiments of the present application, the starting time-domain symbol of the time-domain symbol that the zero-power reference signal is allowed to occupy can be the time-domain offset relative to the time-domain symbol where the DMRS is located, or the time-domain offset relative to the time-domain symbol where the PUSCH is located.

[0294] The following gives examples to illustrate the optional implementation manners of the pattern and the meanings of various indication information in the configuration information.

[0295] In the embodiments of the present application, in each time-frequency resource unit, the number of zero-power reference signals can be 1 or more. Among them, each zero-power reference signal can occupy one or more REs. When the number of REs occupied by each zero-power reference signal is multiple, the time-domain symbols where the multiple REs are located can be 1 or more, and the subcarriers where the multiple REs are located can be 1 or more. The time-domain symbols where the time-frequency resources of multiple zero-power reference signals are located are different, and the subcarriers where the time-frequency resources of multiple zero-power reference signals are located can be the same or different.

[0296] In an embodiment of the present application, for example, the uplink signal may further include DMRS. In each time-frequency resource unit, the time-frequency resources of the zero-power reference signal and the time-frequency resources of DMRS may not overlap. For example, the time-domain symbols in which the time-frequency resources of the zero-power reference signal and the time-frequency resources of DMRS are located may be different. In one example, the time-domain symbol in which the zero-power reference signal is located may be adjacent to the time-domain symbol in which DMRS is located. In another example, the time-domain symbol in which the zero-power reference signal is located may be far from the time-domain symbol in which DMRS is located.

[0297] In practical applications, the range of time-domain symbols allowed to be occupied by each zero-power reference signal can be set. Then, one or more REs of each zero-power reference signal can be set to be located in one or more time-domain symbols within the allowed range of time-domain symbols. In an embodiment of the present application, when the number of REs occupied by each zero-power reference signal is 1, the time-domain symbol in which this 1 RE is located may be the starting time-domain symbol of the range of time-domain symbols allowed to be occupied by each zero-power reference signal; when the number of REs occupied by each zero-power reference signal is 2, the time-domain symbols in which these 2 REs are located may be at least one of the 2 time-domain symbols starting from the starting time-domain symbol. It should be noted that when the number of zero-power reference signals in each time-frequency resource unit is 2, the range of time-domain symbols allowed to be occupied can be set for each zero-power reference signal.

[0298] For example, the range of time-domain symbols allowed to be occupied by each zero-power reference signal may be one or more contiguous time-domain symbols, and the starting time-domain symbol of the time-domain symbol range may be set in any of the following ways.

[0299] In an optional setting method, the starting time-domain symbol may be the first time-domain symbol after the time-domain symbol in which the time-frequency resources of DMRS are located.

[0300] In another optional setting method, the starting time-domain symbol may be the middle time-domain symbol in a time-frequency resource unit; where, in one example, the middle time-domain symbol may be the middle time-domain symbol among the other time-domain symbols in a time-frequency resource unit except for the time-domain symbol occupied by DMRS, and the middle time-domain symbol will be described in detail in the following embodiments.

[0301] In yet another optional setting method, the starting time-domain symbol may be the Kth time-domain symbol after the first time-domain symbol in which the time-frequency resources of DMRS are located, where K is the maximum number of time-domain symbols allowed to be occupied by each DMRS. In one example, K may be 1 or 2.

[0302] Table 2-1 is a set of illustrations of the starting time-domain symbols corresponding to various setting methods.

[0303] Table 2-1

[0304]

[0305] In the embodiments of the present application, when each zero-power reference signal occupies different subcarriers on 2 time-domain symbols, interference at different subcarrier positions can be measured, enhancing the interference measurement ability for frequency-selective channels. A frequency-selective channel is a frequency-selective fading channel, that is, the REs located at different subcarriers can obtain interference measurement results on different subcarriers.

[0306] It should be noted that when the number of occupied REs is 2, the distribution mode of the time-domain symbols where each zero-power reference signal is located can be the first distribution mode or the second distribution mode. The distribution mode adopted by the zero-power reference signal corresponding to the serving cell can be determined according to the number of neighboring cells of the serving cell of the terminal device and the cell identifier of the serving cell. This will be described in detail in the following embodiments.

[0307] Figures 3A to 3G Schematic diagram of the pattern of the zero-power reference signal provided by the embodiments of the present application Figure 1 to seven.

[0308] In the first example of the adjacent setting mode, the time-domain symbol of the DMRS is 1 time-domain symbol, for example 0, and the time-domain symbol of the zero-power reference signal can be the first time-domain symbol after the time-domain symbol of the DMRS, for example 1. See Figure 3A the pattern shown.

[0309] In the second example of the adjacent setting mode, the time-domain symbols of the DMRS are time-domain continuous time-domain symbols, for example 0 and 1, and the time-domain symbol of the zero-power reference signal is the first time-domain symbol after the last time-domain symbol of the DMRS, for example 2. See Figure 3B the pattern shown.

[0310] In the third example of the adjacent setting mode, the time-domain symbols of the DMRS are two time-domain discontinuous time-domain symbols, for example 0 and 5, and the number of time-domain symbols of the zero-power reference signal is 2, which are respectively the first time-domain symbols after the 2 time-domain symbols where the DMRS is located, for example 1 and 6. See Figure 3E . It should be noted that the time-frequency resources of the zero-power reference signal can be located on the same subcarrier or different subcarriers of different time-domain symbols. See Figure 3F .

[0311] In the first example of the non-adjacent setting mode, the time-domain symbol of the DMRS is 1 time-domain symbol, for example 0, and the time-domain symbol of the zero-power reference signal is the middle time-domain symbol, for example 7. See Figure 3C the pattern shown.

[0312] In a second example of the setting method, the time-domain symbols of the DMRS are two consecutive time-domain symbols in the time domain, such as 0 and 1, and the time-domain symbol of the zero-power reference signal is the middle time-domain symbol, such as 7. Refer to Figure 3D the pattern shown.

[0313] As an example, the DMRS can be located in the first time-domain symbol of an RB, or on two consecutive time-domain symbols starting from the first time-domain symbol. The time-domain symbol where the zero-power reference signal is located can be one or more time-domain symbols starting from the starting time-domain symbol, where the time-domain symbol offset of the starting time-domain symbol can be an integer greater than 3 and less than 11; the subcarriers where the zero-power reference signal is located can be one or more subcarriers with a subcarrier offset greater than or equal to 0. In the embodiments of the present application, the position and number of time-domain symbols where the zero-power reference signal is located can be flexibly indicated and configured, and can be at any one or more time-domain symbol positions. Refer to Figure 3G the pattern shown, where the offsets of the time-domain symbols where the zero-power reference signal is located are 10 and 11, and the subcarrier offsets of the subcarriers where the zero-power reference signal is located are 4, 5, 10, and 11. For another example, the offsets of the time-domain symbols where the zero-power reference signal is located are 6 and 7, and the subcarrier offsets of the subcarriers where the zero-power reference signal is located are 4, 5, 10, and 11.

[0314] It should be noted that Figures 3A to 3F the subcarriers of the zero-power reference signal shown are only for illustration, and the subcarriers of the zero-power reference signal can also be other subcarriers in a time-frequency resource unit.

[0315] In the embodiments of the present application, taking the zero-power reference signal corresponding to the serving cell of the terminal device as an example, when setting the pattern of the time-frequency resources of the zero-power reference signal, it is also possible to consider setting the time-frequency resources of the zero-power reference signal corresponding to the serving cell and its neighboring cells not to overlap with each other. That is, the time-frequency resources of the zero-power reference signal corresponding to different cells can be non-overlapping.

[0316] Figure 4 This is a schematic diagram of the distribution of the time-frequency resources of the zero-power reference signal in a multi-cell scenario provided by the embodiments of the present application Figure 1 . As Figure 4 shown in the hexagonal sector model, taking the serving cell of the terminal device as Cell 0 as an example, there can be 6 neighboring cells around the serving cell, namely Cell 1 to Cell 6. The neighboring cells may cause relatively large interference to the uplink signals of the edge users of the serving cell. To ensure the accuracy of measuring the interference of the zero-power reference signal of each cell to neighboring cells, the subcarriers where the zero-power reference signal of different cells is located can correspond to different frequency-domain offsets.

[0317] In practical applications, for example, it can be pre-planned such that the resource elements (REs) of the zero-power reference signal corresponding to the serving cell are on different subcarriers from those of the zero-power reference signal corresponding to the neighboring cell, and / or in different time-domain symbols.

[0318] In one example, as shown in Figure 4 When the number of REs occupied by the zero-power reference signal of the serving cell of the terminal device is 1 and the number of REs occupied by the zero-power reference signal of the neighboring cell of the serving cell of the terminal device is 1, the first subcarriers corresponding to the serving cell and the neighboring cell of the serving cell can be set to be different, where the first subcarrier is the subcarrier where the zero-power reference signal is located.

[0319] Figures 5A to 6B Schematic diagram of the pattern of the zero-power reference signal in a multi-cell scenario provided by an embodiment of the present application Figures 1 to 4 . As shown in Figures 5A to 6B , the zero-power reference signals corresponding to Cell 0 to Cell 1 each occupy 1 RE and are located on different subcarriers respectively. Among them, Figure 5A and Figure 5B the time-domain symbols where the zero-power reference signals are located adopt a setting mode adjacent to the DMRS, Figure 6A and Figure 6B the time-domain symbols where the zero-power reference signals are located adopt a setting mode far from the DMRS. Figure 5A and Figure 6A the REs of the DMRS in Figure 5B and Figure 6B occupy 1 time-domain symbol, and the REs of the DMRS in

[0320] Figures 7A to 7B Schematic diagrams five to six of the pattern of the zero-power reference signal in a multi-cell scenario provided by an embodiment of the present application. As shown in Figures 7A to 7B , in one time-frequency resource unit, the number of zero-power reference signals corresponding to each cell is 2. Each zero-power reference signal corresponding to Cell 0 to Cell 1 occupies 1 RE and is located on different subcarriers respectively. Among them, the number of DMRSs corresponding to each cell is 2 and each DMRS occupies 1 time-domain symbol, and the time-domain symbols where each zero-power reference signal is located are respectively set adjacent to the time-domain symbols of the corresponding DMRS. It should be noted that for the 2 zero-power reference signals corresponding to each cell, as shown in Figure 7A , the subcarriers where the REs of the two zero-power reference signals are located can be the same, as shown in Figure 7B , or can be different.

[0321] Figure 8ASchematic diagram of the time-frequency resource distribution of zero-power reference signals in a multi-cell scenario provided by an embodiment of the present application Figure 2 ; Figure 8B It is the third schematic diagram of the time-frequency resource distribution of zero-power reference signals in a multi-cell scenario provided by an embodiment of the present application.

[0322] In another example, as Figure 8A and 8B shown, for any target cell in the serving cell of the terminal device and the neighboring cells of the serving cell, the number of REs occupied by the zero-power reference signal corresponding to the target cell can be 2, and the first subcarrier and the second subcarrier corresponding to the target cell are not adjacent to each other; the first subcarrier and the second subcarrier are the subcarriers where the 2 REs corresponding to the target cell are located. For each time-domain symbol in the time-frequency resource unit, the subcarriers where the REs occupied by the zero-power reference signals corresponding to different target cells located in the same time-domain symbol can be different.

[0323] It should be noted that Figure 8A and Figure 8B the two time-domain symbols shown on the right side in can be the time-domain symbols allowed to be occupied by the zero-power reference signal. Among them, the left time-domain symbol can be symbol1, and the right time-domain symbol is symbol2, where symble1 can be the starting time-domain symbol allowed to be occupied by the zero-power reference signal.

[0324] Figures 9A to 9D They are the ninth to twelfth schematic diagrams of the patterns of zero-power reference signals in a multi-cell scenario provided by an embodiment of the present application. As Figures 9A to 9D shown, the zero-power reference signals corresponding to Cell 0 to Cell 1 respectively occupy 2 REs, and the 2 REs of the same cell are located on different subcarriers. Among them, Figure 9A and Figure 9B the time-domain symbols where the zero-power reference signals are located adopt the setting method adjacent to the DMRS, Figure 9C and Figure 9D the time-domain symbols where the zero-power reference signals are located adopt the setting method far from the DMRS.

[0325] In an embodiment of the present application, the frequency-domain offset (FreqOffset) of the first subcarrier corresponding to each target cell can be determined according to the cell identifier (Cell ID, CID) of each target cell. Taking the time-frequency resource unit including 12 subcarriers as an example, the FreqOffset of the first subcarrier corresponding to each cell can be determined in the following manner.

[0326] When mod(CID, Q) < 6, FreqOffset = mod(CID, Q) × 2;

[0327] When mod(CID, Q) = 6, FreqOffset = 11;

[0328] Wherein, mod represents the remainder operation, Q is the total number of cells of the serving cell and the neighboring cells of the serving cell, Q is an integer greater than or equal to 2 and less than 7; CID is an integer greater than or equal to 0.

[0329] Table 2-2 is a schematic illustration of a set of first subcarriers of the zero-power reference signal determined according to the cell identifier.

[0330] Table 2-2

[0331]

[0332]

[0333] The subcarrier positions of the zero-power reference signal shown in Table 2-2 can be referred to Figures 4 to 6A as shown. In practical applications, when the zero-power reference signal is configured to occupy 1 RE, that is, in the single type: the positions of the subcarriers occupied by the zero-power reference signal in each PRB can be obtained by querying a pre-defined table using the Cell ID as an index.

[0334] In the embodiments of the present application, when the number of REs occupied by each of the zero-power reference signals is 2, the distribution manner of the time domain symbols where the 2 REs are located can be: the first distribution manner, or, the second distribution manner;

[0335] Wherein, the first distribution manner is used to represent that the 2 REs are located in 2 consecutive time domain symbols;

[0336] The second distribution manner is used to represent that the 2 REs are located in 1 time domain symbol.

[0337] In the embodiments of the present application, when the distribution manner of the time domain symbols where the 2 REs are located is the second distribution manner, the time domain symbols where the 2 REs are located can be determined according to the cell identifier of the serving cell of the terminal device; wherein,

[0338] When CID × 2T < SumCR, the time domain symbols where the 2 REs are located are the starting time domain symbols;

[0339] When SumCR ≤ CID × 2T < 2 × SumCR, the time domain symbols where the 2 REs are located are the 1st time domain symbol after the starting time domain symbol;

[0340] Wherein, CID is the cell identifier, SumCR is the total number of subcarriers in a time-frequency resource unit, T is the number of subcarrier intervals, and T is an integer greater than or equal to 1 or less than or equal to 6. T is less than or equal to SumCR / Q.

[0341] It should be noted that, in an optional implementation, when CID×2T≥2×SumCR, the distribution mode of the time-domain symbols where the 2 REs are located can be set to the first distribution mode.

[0342] In the embodiments of the present application, when the distribution mode of the time-domain symbols where the 2 REs are located is the first distribution mode, the subcarrier interval amount between the first subcarrier and the second subcarrier where the 2 REs are located is 1 or 3 or 5. Taking the subcarrier interval amount of 5 as an example, reference can be made to Figure 8A 、 Figure 9A 、 Figure 9C and Table 2-3.

[0343] In the embodiments of the present application, when the distribution mode of the time-domain symbols where the 2 REs are located is the second distribution mode, the subcarrier interval amount between the first subcarrier and the second subcarrier where the 2 REs are located is 2 or 4 or 6. Taking the subcarrier interval amount of 5 as an example, reference can be made to Figure 8B 、 Figure 9B 、 Figure 9D and Table 2-4.

[0344] For example, in an optional implementation, if the number of subcarriers of the zero-power reference signal corresponding to each cell is 2, which are the first subcarrier and the second subcarrier respectively. Then the identifier of the first subcarrier corresponding to the cell can be determined according to the cell identifier of the cell, and the identifier of the second subcarrier corresponding to the cell can be the remainder of the sum of the identifier of the first subcarrier and the preset subcarrier offset W modulo 12. For example, W can be equal to 5. Reference can be made to Figure 5. It should be noted that this setting method can be considered when the REs occupied by the zero-power reference signal corresponding to the same cell are located in the same time-domain symbol.

[0345] Table 2-3 is a schematic illustration of the REs of the zero-power reference signal of each cell occupying 2 subcarriers on 2 time-domain symbols.

[0346] Table 2-3

[0347]

[0348]

[0349] In another example, FIG. 6 is a schematic diagram III of the subcarrier distribution of the zero-power reference signals of the target cell and 6 neighboring cells, as shown in FIG. 6. Among them, the time-frequency resources of the zero-power reference signals shown in cells 0 to 5 are 2 REs located on different subcarriers and having the same time-domain symbol.

[0350] For example, in an alternative embodiment, if the number of subcarriers of the zero-power reference signal corresponding to each cell is 2, and the time-domain symbol where the time-frequency resources of the zero-power reference signal corresponding to each cell are located is 1. The subcarriers and time-domain symbols where the time-frequency resources of the zero-power reference signal corresponding to each cell are located can be determined respectively.

[0351] Table 2-4 is a schematic illustration of a group where the REs of the zero-power reference signals of each cell occupy 1 time domain and 2 subcarriers.

[0352] Table 2-4

[0353]

[0354] Among them, Symbol1 is the first time-domain symbol among the 2 time-domain symbols allowed to be occupied by each zero-power reference signal; Symbol2 is the second time-domain symbol among the 2 time-domain symbols allowed to be occupied by each zero-power reference signal. Among them, "Symbol1: (0, 6)" means that 2 REs are located on 2 subcarriers with frequency offsets of 0 and 6 on the first time-domain symbol among the 2 time-domain symbols allowed to be occupied.

[0355] In the embodiments of the present application, in a time-frequency resource unit for transmitting the uplink signal, the number of zero-power reference signals is 2; the subcarriers where the time-frequency resources of the 2 zero-power reference signals are located can be set to be the same or different.

[0356] Taking the example that the zero-power reference signal corresponding to each cell occupies 1 RE, when the subcarriers are set to be the same, the pattern of the zero-power reference signal corresponding to each cell occupying 1 RE can be seen Figure 7A as shown.

[0357] When the subcarriers are set to be different, the subcarrier interval between the 2 subcarriers where the 2 zero-power reference signals are located can be 1 or 3 or 5. Exemplarily, the pattern with a subcarrier interval of 5 can be seen Figure 7B as shown.

[0358] In the embodiments of the present application, there are two types of PUSCH resource allocation methods in the NR system, namely Type A and Type B PUSCH, and the main difference lies in the starting position of the time-domain symbol of the PUSCH in each slot and the number of scheduled time-domain symbols.

[0359] Table 3-1 shows the illustration of PUSCH resource allocation method.

[0360] Table 3-1

[0361]

[0362] Among them, S represents the starting time-domain symbol position, L represents the length of consecutive time-domain symbols for scheduling, and S + L represents the position of the last time-domain symbol of the scheduled PUSCH.

[0363] DMRS can be configured in PUSCH. DMRS can be used for channel estimation and data demodulation. Table 3-2 is a configuration table for a time-domain symbol position of DMRS. (See TS38.212 Table 6.4.1.1.3-3)

[0364] Table 3-2

[0365]

[0366] Among them, l 0 represents the offset of the first DMRS symbol relative to the starting symbol of PUSCH scheduling to determine the position where the starting symbol of DMRS is located: it is configured through the high-layer parameter dmrs-TypeA-Position in Type A PUSCH, and takes the value of 0 in Type B PUSCH, that is, starting from the first time-domain symbol position of PUSCH.

[0367] In practical applications, the time-frequency resources of the zero-power reference signal can be set with reference to the configuration of PUSCH or DMRS. For example, in Type B PUSCH, if 1 DMRS occupies the first time-domain symbol, then the second time-domain symbol can be used for the zero-power reference signal.

[0368] Embodiment 3

[0369] Based on the above embodiments, the embodiments of the present application provide various implementation manners for generating an uplink signal according to configuration information.

[0370] Figure 10 It is a schematic diagram of the mapping process involved in the embodiments of the present application.

[0371] For example, the frequency domain of the time-frequency resource unit may include 12 subcarriers, and the time-frequency resources of the zero-power reference signal include P REs located on the to-be-processed time-domain symbol in one time-frequency resource unit for transmitting the uplink signal.

[0372] In the embodiments of the present application, the subcarriers where the P REs are located are {i 1 , i 2 ,..., i P}, the sub - carriers other than the sub - carriers corresponding to the P REs among the 12 sub - carriers are {j 1 ,j 2 ,…,j 12-P}; where P is an integer greater than or equal to 1 and less than 12; the method further includes:

[0373] Obtain the first data to be transmitted, where the first data is k - P data segments x 1 ,x 2 ,...,\(x_{k - 1}\) k-P , and each RE is used to carry the data in 1 data segment;

[0374] Determine the second data according to the first data and the DFT transform matrix \(W_{k\times k}\) 12×k , where the second data \(x_{0}\) k-P+1 ,...,\(x_{k - 1}\) k satisfies:

[0375]

[0376] Combine the first data and the second data to form a time - domain data \(x\), where \(x=(x_{0}\) 1 ,x_{1}\) 2 ,...,\(x_{k - 1}\) k ) T ;

[0377] Perform DFT transform on the time - domain data \(x\) according to the DFT transform matrix \(W_{k\times k}\) 12×k to obtain a frequency - domain data \(y\);

[0378] where \(y=(y_{0}\) 1 ,y_{1}\) 2 ,y_{2}\) 3 ,...,\(y_{k - 1}\) 8 ,y_{k}\) 9 ,y_{k + 1}\) 10 ,y_{k + 2}\) 11 ,y_{k + 3}\) 12 ) T , and the uplink signals on the P REs are all 0;

[0379] Use the frequency - domain data \(y\) as the uplink signal in the time - domain symbol to be processed;

[0380] where k is the number of time - domain symbols in the time - frequency resource unit, and k is greater than p.

[0381] In the embodiments of the present application, when the zero - power reference signal occupies 2 REs on the time - domain symbol to be processed, that is, P is equal to 2, the signal processing process for uplink transmission in a single - carrier system can be exemplified as follows.

[0382] Exemplarily, the zero-power reference signal occupies the 3rd and 9th REs in the frequency-domain symbol y. That is

[0383] y = (y 1 , y 2 , 0, …, y 8 , 0, y 10 , y 11 , y 12 ) T

[0384] Assume that the time-domain sampled signal transmitted by the transmission band is x = (x 1 , x 2 ,..., x k ) T , and the DFT transformation matrix is W 12×k , then there is:

[0385] y = W 12×k ·x

[0386] At this time, the 3rd and 9th elements in y need to be 0, so the following equations can be obtained:

[0387]

[0388] Therefore, after calculation and arrangement, it is obtained:

[0389]

[0390] In the embodiment of the present application, there are actually 2 redundant signals among every 12 signals to be sent, that is, the above x11 and x12 are obtained by linear combination of the signals x1 to x10. When x11 and x12 satisfy this linear combination, zero-power reference signals can be sent at the frequencies of y3 and y9, that is, mute RE, so as to enable the gNB to perform neighbor cell interference measurement during the uplink transmission process in a single-carrier system.

[0391] The embodiment of generating the uplink signal provided by the present application can implement a single-carrier system, and thus achieve the purpose of maintaining a small Peak to Average Power Ratio (PAPR).

[0392] Embodiment 4

[0393] Based on the foregoing embodiments, the embodiment of the present application further provides an optional implementation manner for the time-frequency resource range of the DMRS and zero-power reference signals in a group of uplink signals.

[0394] In an embodiment of the present application, a terminal device may send an uplink signal including DMRS, where the DMRS may occupy one or more REs on a time-frequency resource unit for sending the uplink signal. For example, the REs occupied by the DMRS may be located on one or more subcarriers in one or more time-domain symbols. It should be noted that, on the time-domain symbol where the REs occupied by the DMRS are located, the REs other than the DMRS may be set as spare REs or data REs. In an embodiment of the present application, the transmit power on the time-frequency resource range corresponding to the spare REs in the uplink signal is zero, and the data REs are the REs for transmitting data.

[0395] In an embodiment of the present application, a zero-power reference signal may or may not be set on the time-frequency resource unit for sending the uplink signal. When the uplink signal includes DMRS and does not include a zero-power reference signal, the time-frequency resource where the DMRS is located may be the same as the time-frequency resource where the DMRS is located in various patterns that simultaneously include DMRS and a zero-power reference signal shown in the drawings of the embodiments of the present application, which is equivalent to that the REs where the zero-power reference signal is located may be data REs or spare REs. Exemplarily, the REs located in the same time-domain symbol as the DMRS may be spare REs or data REs, and the REs located in different time-domain symbols from the DMRS may be data REs. In an embodiment of the present application, unless otherwise specified, the REs other than the REs occupied by the zero-power reference signal in the time-domain symbol where the zero-power reference signal is located are data REs. The zero-power reference signal and DMRS in the uplink signal will be described exemplarily below with reference to the drawings.

[0396] In an embodiment of the present application, the time-frequency resource of the DMRS may be determined from a group resource set according to a first identifier corresponding to the terminal device, where the group resource set includes a plurality of group resources, different first identifiers correspond to different group resources in the group resource set, and at least two of the plurality of group resources are located in different time-domain symbols.

[0397] Among them, the time-domain symbol and / or subcarrier where the DMRS corresponding to different first identifiers is located are different.

[0398] It should be noted that, as an application example, by planning the first identifier corresponding to the DMRS, it is possible to use the fact that the time-domain symbol and / or subcarrier where the time-frequency resources occupied by the DMRSs with different corresponding first identifiers are different to realize sending the DMRSs of multiple terminal devices in the same time-frequency resource range.

[0399] In an embodiment of the present application, for example, the first identifier may be an identifier of a code division multiplexing group (CDM group) corresponding to the DMRS corresponding to the terminal device. In an embodiment of the present application, the identifier of the code division multiplexing packet may be referred to as a CDM group ID. The DMRS in a time-frequency resource unit for transmitting an uplink signal may correspond to a CDM group ID. In an embodiment of the present application, it should be noted that the set of time-frequency resources of the DMRS corresponding to all CDM groups is a group resource set, and the resources in the group resource set are not used for data transmission, that is, the CDM group mentioned in the embodiment of the present application corresponds to a CDM group that is not used for data transmission (i.e., DMRS CDM group without data).

[0400] In an embodiment of the present application, the time domain symbol and / or subcarrier where the DMRS in the uplink signal is located may be determined according to the identifier of the CDM group corresponding to the terminal device and the CDM configuration type.

[0401] In an embodiment of the present application, the time-frequency resources where the zero-power reference signal is located may be determined based on the code division multiplexing (CDM) configuration type corresponding to the DMRS and / or the identifier of the CDM group.

[0402] It should be noted that the CDM group ID corresponding to the DMRS may be the CDM group ID corresponding to the terminal device that sends the DMRS.

[0403] For a cell, the terminal devices under a cell may be divided into multiple CDM groups. The time-frequency resources where the DMRSs sent by the terminal devices in different CDM groups are located are different, and the time-frequency resources where the DMRSs sent by the terminal devices in the same CDM group are located are the same.

[0404] For example, the resource elements (REs) where the DMRSs sent by the terminal devices in different CDM groups are located may be different, that is, through time division and / or frequency division methods to avoid interference between the DMRSs sent by the terminal devices in different CDM groups. The REs where the DMRSs sent by the terminal devices belonging to the same CDM group are located are the same. Each CDM group corresponds to an orthogonal code sequence, and different UEs in the same CDM group use different orthogonal codes in the orthogonal code sequence to send DMRSs, that is, through code division to avoid interference between the DMRSs of different UEs in the same CDM group.

[0405] It should also be noted that the uplink signal can be a signal transmitted through an antenna port of the terminal device; at this time, the CDM group corresponding to the terminal device can be the CDM group corresponding to the antenna port of the terminal device; among them, each antenna port of the terminal device can correspond to a different CDM group, or each antenna port of the terminal device can correspond to different orthogonal codes in the CDM group. For example, antenna port 0 and antenna port 1 of the terminal device can correspond to group 0, and antenna port 2 and antenna port 3 can correspond to group 1. The first identifier can be the CDM group ID. In one example, the CDM group ID corresponding to the terminal device can be the CDM group ID corresponding to the DMRS transmitted by the antenna port in the terminal device.

[0406] In the embodiments of the present application, the configuration information supporting the zero-power reference information of the CDM group may include at least one of the following information:

[0407] In any time-frequency resource unit for transmitting the uplink signal, a configuration indication of whether the zero-power reference signal supports code division multiplexing group CDM group; wherein, the configuration indication of whether the zero-power reference signal supports the CDM group is used to indicate whether to configure the time-frequency resource where the zero-power reference signal is located according to the time-frequency resource where the DMRS in the uplink signal is located or the CDM configuration type corresponding to the DMRS.

[0408] The CDM configuration type of the DMRS; wherein, the CDM configuration type of the DMRS includes: the first CDM type, the second CDM type, and the third CDM type; among them, when the CDM configuration type of the DMRS is the third CDM type, the time-frequency resource of the DMRS is determined from the group resource set according to the CDM group ID corresponding to the DMRS, where the group resource set includes multiple group resources, different CDM group IDs correspond to different group resources in the group resource set, and at least two group resources among the multiple group resources are in different time domain symbols.

[0409] The configuration method of the zero-power reference signal supporting the CDM group; wherein, the configuration method includes: the first configuration method and the second configuration method; the RE occupied by the zero-power reference signal using the first configuration method is the same as the subcarrier where the RE occupied by the DMRS is located; the subcarrier where the zero-power reference signal using the second configuration method is located is the set of subcarriers where the DMRSs of all CDM groups corresponding to the CDM configuration type are located, where the subcarriers where the DMRSs of all CDM groups are located are part of the subcarriers in the time-frequency resource unit for transmitting the uplink signal.

[0410] The starting time-domain symbol occupied by the zero-power reference signal of each CDM group;

[0411] The number of time-domain symbols occupied by the zero-power reference signal of each CDM group;

[0412] The number of group resource units in each group resource.

[0413] Wherein, the DMRS included in each group resource unit occupies consecutive time-domain symbols and / or consecutive subcarriers.

[0414] In the embodiment of the present application, when the configuration indication of whether the zero-power reference signal supports code division multiplexing group CDM group is yes, the terminal device may determine the time-frequency resource where the zero-power reference signal is located according to the time-frequency resource of the DMRS or according to the CDM configuration type corresponding to the DMRS in the uplink signal including the zero-power reference signal; when the configuration indication of whether the zero-power reference signal supports code division multiplexing group CDM group is no, the terminal device may determine the time-frequency resource where the zero-power reference signal is located according to other configuration methods provided in the embodiments of the present application or other parameters in the configuration information. For example, the starting time-domain symbol of the zero-power reference signal may be the first time-domain symbol after the time-domain symbol where the DMRS is located, the number of time-domain symbols occupied by the zero-power reference signal is 1 or 2, and the subcarrier where the zero-power reference signal is located is the 0th subcarrier or the 5th subcarrier.

[0415] In an embodiment of the present application, in the frequency domain, the subcarriers where the zero-power reference signal is located can be determined according to at least one of the time-frequency resources of the DMRS in the uplink signal including the zero-power reference signal, the CDM group ID corresponding to the DMRS in the uplink signal, and the CDM configuration type. In the time domain, the starting time-domain symbol where the zero-power reference signal is located can include other time-domain symbols adjacent or non-adjacent to the time-domain symbol where the DMRS is located. For example, the starting time-domain symbol where the zero-power reference signal is located can include the 1st and / or 2nd time-domain symbols after the time-domain symbol where the DMRS is located, or the time-domain symbol where the zero-power reference signal is located can be other time-domain symbols determined according to the CDM group ID and / or the CDM configuration type; the number of time-domain symbols where the zero-power reference signal is located can be 1, 2, 3, 4, 6, etc. In addition, the time-frequency resource position occupied by the zero-power reference signal can be arbitrarily configured by the network device through signaling. For example, in the frequency domain, at least one subcarrier position in each time-frequency resource unit can be configured as the position of the zero-power reference signal, and in the time domain, the number and position of at least one time-domain symbol can be configured in each time-frequency resource unit. The network device configures through signaling, including through high-layer signaling (e.g., RRC signaling). The number of time-domain symbols occupied by each zero-power reference signal can be the same as the number of time-domain symbols occupied by each DMRS. In one example, the number of time-domain symbols occupied by the zero-power reference signal can be determined according to the number of time-domain symbols occupied by each DMRS in the configuration information of the DMRS. The following will be described by way of example in combination with the CDM configuration type and the CDM group ID.

[0416] In an embodiment of the present application, there are various implementation manners for the time-frequency resources where the zero-power reference signal is located determined based on information such as the CDM configuration type and the CDM group ID corresponding to the DMRS.

[0417] In an alternative implementation manner for determining the zero-power reference signal, the subcarriers where the zero-power reference signal is located can be the same as the subcarriers where the DMRS is located, where the subcarriers where the DMRS is located can be determined according to the CDM group ID corresponding to the terminal device sending the DMRS. That is to say, the subcarriers where the zero-power reference signal is located can be determined according to the CDM group ID corresponding to the terminal device sending the zero-power reference signal and the DMRS.

[0418] The following describes various configuration manners of the subcarriers where the DMRS is located. The subcarriers where the zero-power reference signal is located can be determined in the same manner as the subcarriers where the DMRS is determined based on the CDM group ID.

[0419] In an embodiment of the present application, the subcarriers where DMRS is located can be determined according to the CDM configuration type of DMRS and the CDM group ID. Among them, the CDM configuration type of DMRS can be the first CDM type, the second CDM type, and the third CDM type.

[0420] Table 4-1 is a schematic illustration of the CDM configuration type.

[0421] Table 4-1

[0422]

[0423]

[0424] Among them, the number of time domain symbols occupied by the zero-power reference signal can be 1 or 2. The starting time domain symbol among the allowed time domain symbols is the first time domain symbol after the time domain symbols occupied by DMRS.

[0425] In one example, the number of time domain symbols occupied by the zero-power reference signal can be the same as the number of time domain symbols occupied by DMRS.

[0426] In an alternative implementation, the configuration information of DMRS can include information such as the number of subcarrier intervals of DMRS. The number of subcarrier intervals is the number of subcarriers between multiple subcarriers where DMRS of the same CDM group is located. For example, if the subcarriers where DMRS corresponding to a certain group ID is located are 3, 7, and 11, then the number of subcarrier intervals is 3.

[0427] In an embodiment of the present application, when the CDM configuration type is the first CDM type and the second CDM type, the subcarriers where DMRS corresponding to different group IDs are located are different. The time-frequency resources of the zero-power reference signal can be configured by using the above first configuration method or the second configuration method. When the CDM configuration type is the third CDM type, the time-frequency resources of the DMRS are determined from the group resource set according to the CDM group ID corresponding to the DMRS, where the group resource set includes multiple group resources, different CDM group IDs correspond to different group resources in the group resource set, and at least two of the multiple group resources are located in different time domain symbols. Exemplarily, the time domain symbols where DMRS corresponding to the first CDM group is located are different from the time domain symbols where DMRS corresponding to the second CDM group is located, the first CDM group is the CDM group corresponding to the terminal device, and the second CDM group is at least one other CDM group among at least two CDM groups supported by the third CDM type and including the first CDM group.

[0428] In the embodiments of the present application, the subcarriers where the DMRSs corresponding to different CDM groups are located are different, and there can be multiple implementation manners. The following takes a time-frequency resource unit including 12 subcarriers as an example for illustration.

[0429] For example, the pattern configuration type (hereinafter simply referred to as the CDM configuration type of the DMRS) of the subcarriers where the DMRSs configured based on the CDM group ID are located may include:

[0430] Figure 11 FIG. is a set of schematic diagrams of the subcarriers where the DMRSs configured based on the CDM group are located.

[0431] In the first CDM type, a cell can support 2 CDM groups, namely CDM group 0 and CDM group 1.

[0432] As Figure 11 shown in (1) and (2) of FIG., the DMRSs sent by the terminal devices belonging to CDM group 0 are located on the subcarriers with an even subcarrier offset, and the DMRSs sent by the terminal devices belonging to CDM group 0 are located on the subcarriers with an odd subcarrier offset.

[0433] As Figure 11 shown in (1) of FIG., the REs occupied by the DMRS are located on one time domain symbol, that is, the time domain symbol number configuration type of the DMRS is the Single type, and the DMRSs of the terminal devices in each CDM group occupy 6 REs. As Figure 11 shown in (2) of FIG., the REs occupied by the DMRS are located on two adjacent time domain symbols, that is, the time domain symbol number configuration type of the DMRS is the Double type, and the DMRSs of the terminal devices in each CDM group occupy 12 REs.

[0434] In the second CDM type, a cell can support 3 CDM groups, namely CDM group 0, CDM group 1, and CDM group 2. Among them, the subcarriers where the DMRSs are located are all the subcarriers whose remainder of the subcarrier offset modulo 6 is equal to CDM group ID * 2 and CDM group ID * 2 + 1.

[0435] As Figure 11As shown in (3) and (4), the DMRS sent by the terminal device belonging to CDM group 0 is located on all subcarriers where the remainder of the subcarrier offset modulo 3 is 0 and 1. The DMRS sent by the terminal device belonging to CDM group 1 is located on all subcarriers with subcarrier offsets of 2 and 3. The DMRS sent by the terminal device belonging to CDM group 2 is located on all subcarriers with subcarrier offsets of 4 and 5.

[0436] As Figure 11 shown in (3), the REs occupied by the DMRS are located on one time-domain symbol, that is, the configuration type of the number of time-domain symbols of the DMRS is of the Single type, and the DMRS of the terminal devices in each CDM group occupies 4 REs. As Figure 11 shown in (4), the REs occupied by the DMRS are located on two adjacent time-domain symbols, that is, the configuration type of the number of time-domain symbols of the DMRS is of the Double type, and the DMRS of the terminal devices in each CDM group occupies 8 REs.

[0437] It should be noted that the maximum number of terminal devices that the two CDM configuration types can support is the product of the maximum number of terminal devices supported by each CDM group and the number of CDM groups. Among them, the maximum number of terminal devices that each CDM group can support is the number of orthogonal codes in the orthogonal code sequence * the number of time-domain symbols.

[0438] The following takes the number of orthogonal codes in the orthogonal code sequence as 2 for illustrative purposes. When the configuration of the number of time-domain symbols of the DMRS is of the Single type, the maximum number of terminal devices that each CDM group can support is 2*1, that is, 2. When the configuration of the number of time-domain symbols of the DMRS is of the Double type, on two adjacent time-domain symbols, the multiplexing of 2 UEs can also be achieved through the orthogonal codes in the time domain. Therefore, compared with the single type, the double type can support twice as many UEs for multiplexing. Based on this, the maximum number of terminal devices that each CDM group can support is 2*2, that is, 4.

[0439] Table 4-2 shows the maximum number of terminal devices that each CDM configuration type can support when the number of orthogonal codes in the orthogonal code sequence is 2.

[0440] Table 4-2

[0441]

[0442] When a terminal device corresponds to a single-stream transmission, for an antenna port corresponding to a terminal device, the maximum number of antenna ports supported by each CDM group is the same as the maximum number of terminal devices supported by each CDM group.

[0443] As shown in the description of the first CDM type in Table 1, Figure 11 In the pattern shown in (1) below, the maximum number of terminal devices that each CDM group can support is 2, the number of CDM groups supported by the first CDM type is 2, and the maximum number of antenna ports that the time-frequency resources using the Single type of DMRS can support is 4.

[0444] As shown in the description of the first CDM type in Table 1, Figure 11 In the pattern shown in (2) below, the maximum number of terminal devices that each CDM group can support is 4, the number of CDM groups supported by the first CDM configuration type (the first CDM type) is 2, and the maximum number of antenna ports that the time-frequency resources using the Double type of DMRS can support is 8.

[0445] As shown in the description of the second CDM configuration type (the second CDM type) in Table 1, Figure 11 In the pattern shown in (3) below, the maximum number of terminal devices that each CDM group can support is 2, the number of CDM groups supported by the second CDM configuration type (the second CDM type) is 3, and the maximum number of antenna ports that the time-frequency resources using the Single type of DMRS can support is 6.

[0446] As shown in the description of the second CDM type in Table 1, Figure 11 In the pattern shown in (3) below, the maximum number of terminal devices that each CDM group can support is 4, the number of CDM groups supported by the second CDM type is 3, and the maximum number of antenna ports that the time-frequency resources using the Single type of DMRS can support is 12.

[0447] In the second alternative implementation manner of configuring the zero-power reference signal based on the CDM group ID, the subcarriers where the zero-power reference signal is located can be the set of all subcarriers where the DMRS corresponding to the CDM configuration type is located. Among them, the subcarriers where the zero-power reference signal is located are part of the subcarriers in the time-frequency resource unit of the uplink signal. At this time, the subcarriers where the DMRS corresponding to different group IDs is located can be the same or different.

[0448] In one example, the configuration method of the zero-power reference signal supporting the CDM group is the second configuration method; the CDM configuration type of the DMRS is the first CDM type or the second CDM type; wherein, the subcarriers where the DMRSs corresponding to different group IDs are located are different; the subcarriers where the zero-power reference signal is located include the subcarriers where the DMRSs of all CDM groups corresponding to the CDM configuration type are located; the starting time-domain symbol where the REs occupied by the zero-power reference signal are located is the first time-domain symbol after the time-domain symbol where the DMRS is located or any time-domain symbol not adjacent to the time-domain symbol occupied by the DMRS.

[0449] In another example, the configuration method of the zero-power reference signal supporting the CDM group is the second configuration method; the CDM configuration type of the DMRS is the third CDM type; the time-frequency resources where the zero-power reference signal is located include the set of the time-frequency resources where the DMRSs of all CDM groups corresponding to the CDM configuration type are located excluding the time-frequency resources where the DMRSs of the uplink signal are located, wherein, the time-frequency resources of the DMRS are determined from the group resource set according to the CDM group ID corresponding to the DMRS, wherein, the group resource set includes multiple group resources, different CDM group IDs correspond to different group resources in the group resource set, and the time-domain symbols where at least two of the multiple group resources are located are different; all the subcarriers where the DMRSs of all CDM groups are located are part of the subcarriers in the time-frequency resource unit for transmitting the uplink signal.

[0450] In the embodiments of the present application, the subcarriers where the zero-power reference signal is located are part of the subcarriers in the time-frequency resource unit for transmitting the uplink signal.

[0451] Figures 12 to 15 It is a schematic diagram of the pattern of the zero-power reference signal configured by the first configuration method provided for the embodiments of the present application.

[0452] In an example of practical application, the zero-power reference signal can adopt the first configuration method, and the CDM configuration type of the DMRS can be the first CDM type or the second CDM type.

[0453] When the CDM configuration type of the DMRS is the first CDM type, reference can be made to Figure 12 and Figure 13 As shown, the subcarriers where the zero-power reference signal is located include all subcarriers satisfying the first condition, and the first condition is all subcarriers where the remainder of the subcarrier offset modulo 2 is equal to the CDM group ID; wherein, Figure 12 the zero-power reference signal in Figure 13The zero-power reference signal in [[]] occupies 2 time-domain symbols.

[0454] When the CDM configuration type of the DMRS is the second CDM type, reference can be made to Figure 14 and Figure 15 As shown, the subcarriers where the zero-power reference signal is located include all subcarriers that satisfy the second condition, and the second condition is that the remainder of the subcarrier offset modulo 6 is equal to all subcarriers of the CDM group ID * 2 and the CDM group ID * 2 + 1. Among them, Figure 14 The zero-power reference signal in [[]] occupies 1 time-domain symbol, Figure 15 The zero-power reference signal in [[]] occupies 2 time-domain symbols.

[0455] Figures 16 to 22 FIG. [[]] is a schematic diagram of the pattern of the zero-power reference signal configured by the second configuration method provided by the embodiment of the present application.

[0456] In another example of actual application, the zero-power reference signal adopts the second configuration method, and the CDM configuration type of the DMRS is the first CDM type or the second CDM type or the third CDM type.

[0457] When the CDM configuration type of the DMRS is the first CDM type, reference can be made to Figure 16 , Figure 17 , Figure 18 , Figure 19 As shown, the subcarriers where the zero-power reference signal is located are all subcarriers where the DMRS corresponding to the first CDM type is located for all CDM group IDs. Among them, Figure 16 and Figure 18 The zero-power reference signal in [[]] occupies 1 time-domain symbol, Figure 17 and Figure 19 The zero-power reference signal in [[]] occupies 2 time-domain symbols.

[0458] It should be noted that Figure 18 and Figure 19 In the RBs shown in [[]], the intervals between multiple adjacent subcarriers where the DMRS corresponding to each group ID is located are the same number of subcarriers. Figure 18 In [[]], the interval between adjacent subcarriers where the DMRS corresponding to the same group ID is located is 3 subcarriers; the interval between adjacent subcarriers where the DMRSs corresponding to different group IDs are located is 1 or more subcarriers; Figure 18 In [[]], the interval between adjacent subcarriers where the DMRSs corresponding to different group IDs are located is 1 subcarrier. It should be noted that the configuration information of the DMRS can include the number of subcarriers in the interval.

[0459] When the CDM configuration type of the DMRS is the second CDM type, the subcarriers where the zero-power reference signal is located are all the subcarriers where the DMRSs of all CDM group IDs corresponding to the second CDM type are located. Among them, all the subcarriers where all the DMRSs are located are part of the subcarriers in an RB.

[0460] When the CDM configuration type of the DMRS is the third CDM type, the time-frequency resources where the zero-power reference signal is located include the set of the time-frequency resources where the DMRSs of all CDM groups corresponding to the CDM configuration type are located excluding the time-frequency resources where the DMRS of the uplink signal is located. Among them, all the subcarriers where the DMRSs of all CDM groups are located are part of the subcarriers in the time-frequency resource unit for transmitting the uplink signal.

[0461] As an example, each group resource includes at least two group resource units; the at least two group resource units occupy the same time-domain symbol, and the at least two group resource units occupy different subcarriers; each group resource unit occupies at least one time-domain symbol; each group resource unit occupies at least one subcarrier; among them, all the subcarriers where the group resource units corresponding to all CDM groups are located are part of the subcarriers in the time-frequency resource unit.

[0462] In the embodiments of the present application, the time-frequency resource unit for transmitting the uplink signal including the DMRS is a resource block RB. Any one of the RBs includes 2 or 3 or 4 group resource units; each group resource unit occupies 2 consecutive time-domain symbols; each group resource unit occupies 2 consecutive subcarriers; the number of time-domain symbols occupied by the group resource units of all CDM group IDs is 6; the number of subcarriers occupied by the group resource units of all CDM group IDs is 4.

[0463] See Figure 20 , each group resource in the group resource set in any time-frequency resource unit for transmitting the uplink signal includes 2 group resource units. The group resource units of the DMRSs corresponding to all CDM group IDs occupy 4 time-domain symbols and 4 subcarriers; the number of CDM groups supported by the third CDM type is 4; the REs of each group resource unit are located on two consecutive subcarriers in 2 time-domain symbols.

[0464] See Figure 21, each group resource in the group resource set in any time-frequency resource unit for transmitting the uplink signal includes 2 group resource units. The group resource units of the DMRS corresponding to all CDM group IDs occupy 2 time-domain symbols and 4 subcarriers; the number of CDM groups supported by the third CDM type is 4; the REs of each group resource unit are located on two consecutive subcarriers in 2 time-domain symbols.

[0465] See Figure 22 , each group resource in the group resource set in any time-frequency resource unit for transmitting the uplink signal includes 2 group resource units. The group resource units of the DMRS corresponding to all CDM group IDs occupy 6 time-domain symbols and 4 subcarriers; the number of CDM groups supported by the third CDM type is 6; the REs of each group resource unit are located on two consecutive subcarriers in 2 consecutive time-domain symbols. See Figure 22 (1) As shown, the set of time-frequency resources of the DMRS corresponding to all CDM group IDs is the group resource set; the group resource set in one RB may include the time-frequency resources shown by two black frames. Among them, the DMRS corresponding to each group ID is a group resource, and each group resource includes two group resource units located within the two black frames. Each group resource unit occupies four REs, that is, 4 REs in a cross shape. The time-domain symbols where the two group resource units in the group resources of the same group are located are the same, and the subcarriers between the two group resource units are separated by 4 subcarriers.

[0466] Figures 12 to 15 It is a set of schematic diagrams of the patterns of the zero-power reference signals of different CDM groups using the first configuration method. The differences between the various patterns and the selection of the configuration parameters involved are shown in Table 2.

[0467] Table 5 is a comparative description of the various patterns of the zero-power reference signal using the first configuration method.

[0468] Table 5

[0469]

[0470] Figures 16 to 21 It is a set of schematic diagrams of the patterns of the zero-power reference signals of different CDM groups using the second configuration method.

[0471] Table 6 is a comparative description of the various patterns of the zero-power reference signal using the second configuration method.

[0472] Table 6

[0473]

[0474]

[0475] The technical solution provided by the embodiment of the present application has the following technical effects:

[0476] In the embodiment of the present application, Figures 12 to 22 The configuration of the zero-power reference signal shown in can ensure that the time-frequency resources of the zero-power reference signals corresponding to the users in the same CDM group are the same, so that the data of multiple users on this group will not interfere with the zero-power reference signal. Here, the user can refer to a terminal device, an antenna port, or a data stream. That is, the RE of the zero-power reference signal corresponding to the users in each group is different from the position where the data RE of the users in the same group is located.

[0477] In the embodiment of the present application, Figures 16 to 22 The configuration of the zero-power reference signal shown in can ensure that the RE of the zero-power reference signal is different from the data RE of the users corresponding to different CDM group IDs in this cell. That is, the zero-power reference signal does not contain interference generated by the data RE of all CDM group IDs corresponding to the users in this cell. Based on this, the network device can accurately measure the interference to adjacent cells according to the zero-power reference signal. That is, only the zero-power reference signal is used to measure the interference of neighboring cells.

[0478] See Figure 22 As shown, when the technical solution of combining the second configuration method of the zero-power reference signal with the third CDM type of DMRS is adopted, the number of CDM groups supported by DMRS is 6, and the number of UEs that each CDM group can support for multiplexing is 4. That is to say, DMRS supports up to 24 UEs for multiplexing, that is, it can support the parallel transmission of up to 24 layers of data streams at most, which can significantly improve the system capacity of the uplink transmission.

[0479] In the embodiment of the present application, the time-frequency resources where the zero-power reference signals corresponding to different CDM groups are located can be different or partially the same; the zero-power reference signal of a CDM group cannot occupy all the subcarriers of a time domain symbol; it should be noted that the DMRS of a CDM group can occupy all the subcarriers of a time domain symbol, but the reason is to avoid interruption of the transmission power; therefore, when sending the zero-power while sending the DMRS, the zero-power of all groups cannot occupy all the subcarriers either.

[0480] In the embodiment of the present application, see Figure 22As shown, when the third CDM type is adopted for DMRS and the zero-power reference signal is configured in the second configuration manner, the positions of the REs where the DMRSs corresponding to each group ID are located can be Figure 22 any one of the 6 patterns shown in Figure 22 , as long as the time-frequency resources where the DMRSs corresponding to each group ID are located are different. Exemplarily, a group offset can be used to transform the positions of the REs where the DMRSs corresponding to each group ID are located.

[0481] In the embodiments of the present application, it should be noted that the uplink signal may also not include a zero-power reference signal. In this case, when the third CDM type is adopted for DMRS, the set of subcarriers where the DMRSs corresponding to all CDM groups are located can be all REs or part of the REs in the time-frequency resource unit used to transmit the uplink signal. As an example, the set of subcarriers where the DMRSs corresponding to all CDM groups are located can be all the subcarriers in an RB.

[0482] Embodiment 5

[0483] Based on the foregoing embodiments, the embodiments of the present application further provide an implementation manner for a set of terminal devices to transmit an uplink signal including a zero-power reference signal.

[0484] In the embodiments of the present application, the transmit power on each time-frequency resource unit used to transmit the uplink signal can be pre-configured on the terminal device. For example, it can be determined by the terminal device according to factors such as the signal strength and signal quality in the current environment.

[0485] Since the terminal device sets the transmit power on the time-frequency resources where the zero-power reference signal is located to zero when transmitting an uplink signal including a zero-power reference signal, in order to ensure that the transmit power of the uplink signal including the zero-power reference signal reaches a predetermined transmit power on the overall time-frequency resource unit, and the relative smoothness of the transmit power of the uplink signal in a certain time domain and frequency domain; and to avoid insufficient transmit power on some time-frequency resources in the uplink signal due to the setting of the zero-power reference signal, the terminal device can re-allocate the transmit power originally allocated on the time-frequency resources where the zero-power reference signal is located to other time-frequency resources for transmission.

[0486] In an optional implementation manner, the terminal device can be set such that the difference between the transmit powers of different time-domain symbols in the time-frequency resource unit used to transmit the uplink signal is less than a preset deviation power threshold. For example, in practical applications, it can be set that the transmit powers of different time-domain symbols in the time-frequency resource used to transmit the uplink signal are equal.

[0487] In an embodiment of the present application, the configuration information for the network device to send the zero-power reference signal to the terminal may include at least one of the following: power reconfiguration indication, power reconfiguration policy, power reconfiguration ratio, reconfiguration range, and power deviation threshold.

[0488] In an embodiment of the present application, the power reconfiguration indication is used to indicate whether the terminal device allocates the transmit power of the target time-domain symbol of the RE containing the zero-power reference signal to the valid REs of the target time-domain symbol when sending an uplink signal containing the zero-power reference signal. The valid REs are the other REs in the target time-domain symbol except for the RE where the zero-power reference signal is located, and the transmit power of the valid REs is not zero.

[0489] The terminal device can default to enabling the power reconfiguration function. The power reconfiguration policy may include a first reconfiguration policy and a second reconfiguration policy. Among them, the first reconfiguration policy is to evenly allocate the transmit power of the target time-domain symbol to the valid REs, and the second power reconfiguration policy is that the transmit power on the valid REs is determined according to the power reconfiguration ratio determined based on the RE type.

[0490] In an embodiment of the present application, according to whether the time-frequency resource contains the zero-power reference signal, the time-frequency resource for sending the uplink signal can be divided into several reconfiguration ranges and non-reconfiguration ranges. Among them, the transmit power on each time-domain symbol or subcarrier or RE in the time-frequency resource of the non-reconfiguration range remains unchanged and is transmitted according to the initially configured transmit power corresponding to the time-domain symbol or subcarrier or RE; the time-frequency resource of each reconfiguration range is all the REs in one or more subcarriers on one or more time-domain symbols containing the RE where the zero-power reference signal is located. The default value of the reconfiguration range can be one time-domain symbol in each RB for sending the uplink signal. The default value of the power deviation threshold can be 0.

[0491] Taking an example where a reconfiguration range is all the REs on one time-domain symbol containing the RE occupied by the zero-power reference signal in one RB for exemplary illustration.

[0492] In an embodiment of the present application, the power reconfiguration policy may include multiple implementation manners.

[0493] For example, the time-frequency resource unit for sending the uplink signal may be an RB or a physical resource block PRB; in any target time-domain symbol containing the RE occupied by the zero-power reference signal, the transmit power of each valid RE may be the transmit power of the target time-domain symbol divided by the number of valid REs; where the valid REs are the other REs on the target time-domain symbol except for the RE occupied by the zero-power reference signal.

[0494] In the embodiments of the present application, referring to the respective patterns in the foregoing embodiments, data REs for carrying data and / or pilot REs for transmitting DMRS may exist on the time domain symbols where the zero-power reference information numbers are located.

[0495] In the first power reconfiguration strategy, the power reconfiguration method may be an equal distribution method.

[0496] Assume that the total transmission power of all REs on all subcarriers of this time domain symbol is W0. This time domain symbol contains 12 REs located on 12 subcarriers, and the number of REs occupied by the zero-power reference signal is N1. The REs on this time domain symbol other than those occupied by the zero-power reference signal can be called valid REs, and the transmission power corresponding to each valid RE is W1 = W0 / (12 - N1).

[0497] In one example, the valid REs of the target time domain symbol are data REs for carrying data, and the transmission power of the target time domain symbol can be set to be evenly distributed to each data RE in the target time domain symbol.

[0498] In the second power reconfiguration strategy, the power reconfiguration method may be an allocation method according to RE types.

[0499] Among them, different reconfiguration ratios can be adopted for different types of REs in the valid REs. Among them, the value range of the reconfiguration ratio corresponding to each RE type can be from 0 to 100%, and the sum of the reconfiguration ratios corresponding to all RE types is 100%.

[0500] For example, the valid REs may include data REs and pilot REs. Among them, the data REs are REs for transmitting data, and the pilot REs are REs for transmitting DMRS. The reconfiguration ratios may include: the ratio Rate1 of the transmission power of the data REs to the total transmission power, and the ratio Rate2 of the transmission power of the pilot REs to the total transmission power.

[0501] In one example, the numbers of data REs and pilot REs in the valid REs are N2 and N3 respectively. Then the transmission power of each data RE should be W2 = W0 * Rate1 / N2, and the transmission power of each pilot RE should be W0 * Rate2 / N3.

[0502] For other technical solution details and technical effects of the embodiments of the present application, reference may be made to the descriptions in other embodiments of the present application.

[0503] Embodiment Six

[0504] The embodiments of the present application further provide a communication device. Figure 23 Structural schematic of a communication device provided by the embodiments of the present application Figure 1 As Figure 23As shown, the communication device 1100 may include: a processing module 1101 and a transmitting module 1102.

[0505] In a first alternative embodiment of the communication device 1100:

[0506] The processing module 1101 may be used to instruct the transmitting module 1102 to send an uplink signal including a zero-power reference signal to a network device; wherein, in the time-frequency resources used for sending the uplink signal, the transmission power of the uplink signal within the time-frequency resources of the zero-power reference signal is zero.

[0507] In an embodiment of the present application, the communication device may further include a receiving module 1103, and the receiving module 1103 is used to receive configuration information of a zero-power reference signal from a network device.

[0508] In an embodiment of the present application, the processing module 1101 may further be used to generate an uplink signal including a zero-power reference signal according to the configuration information of the zero-power reference signal.

[0509] In an alternative embodiment, the zero-power reference signal is the zero-power reference signal corresponding to the serving cell of the terminal device; the time-frequency resources of the zero-power reference signals corresponding to the respective cells in the cell group composed of the serving cell and the neighboring cells of the serving cell do not overlap with each other.

[0510] In an alternative embodiment, the configuration information of the zero-power reference information includes at least one of the following information:

[0511] In any time-frequency resource unit used for sending the uplink signal, the number of zero-power reference signals,

[0512] The number of resource elements RE occupied by each zero-power reference signal;

[0513] The starting time-domain symbol of the time-domain symbol range allowed to be occupied by each zero-power reference signal;

[0514] When the number of REs occupied by each zero-power reference signal is 2, the distribution manner of the time-domain symbols where the 2 REs are located;

[0515] At least one subcarrier where each zero-power reference signal is located;

[0516] When the number of REs occupied by each zero-power reference signal is 2, the subcarrier offset between the first subcarrier and the second subcarrier where the 2 REs are located;

[0517] When the number of zero-power reference signals is 2, an indication of whether the subcarriers where the 2 zero-power reference signals are located are the same;

[0518] When the subcarriers where the two zero-power reference signals are located are different, the subcarrier offset between the subcarriers where the two zero-power reference signals are located.

[0519] In an optional implementation, when the number of REs occupied by each of the zero-power reference signals is 1, the time-domain symbol where the 1 RE is located is the starting time-domain symbol of the range of time-domain symbols allowed to be occupied by each of the zero-power reference signals;

[0520] When the number of REs occupied by each of the zero-power reference information signals is 2, the time-domain symbols where the 2 REs are located are at least one of the 2 time-domain symbols starting from the starting time-domain symbol;

[0521] Wherein, the uplink signal further includes DMRS; the starting time-domain symbol of the time-domain symbols allowed to be occupied by each of the zero-power reference signals is any one of the following: the first time-domain symbol after the time-domain symbol where the time-frequency resource of the DMRS is located, or, the middle time-domain symbol in the time-frequency resource unit; wherein, the middle time-domain symbol is different from the time-domain symbol where the time-frequency resource of the DMRS is located, or, the second time-domain symbol after the first time-domain symbol where the time-frequency resource of the DMRS is located.

[0522] In an optional implementation, the number of REs occupied by the zero-power reference signal of the serving cell of the terminal device is 1, and the number of REs occupied by the zero-power reference signal of an adjacent cell of the serving cell of the terminal device is 1;

[0523] The first subcarriers corresponding to the serving cell and the adjacent cell of the serving cell are different, and the first subcarrier is the subcarrier where the zero-power reference signal is located.

[0524] In an optional implementation, the number of REs occupied by the zero-power reference signal corresponding to the target cell is 2, and the target cell is any one of the serving cell of the terminal device and the adjacent cell of the serving cell;

[0525] The first subcarrier and the second subcarrier corresponding to the target cell are not adjacent to each other, and the first subcarrier and the second subcarrier are the subcarriers where the 2 REs corresponding to the target cell are located;

[0526] The subcarriers where the REs occupied by the zero-power reference signals corresponding to different target cells located in the same time-domain symbol are different.

[0527] In an alternative embodiment, the time-frequency resource unit for transmitting the uplink signal includes 12 subcarriers; the frequency-domain offset FreqOffset of the first subcarrier corresponding to any target cell in the serving cell and the neighboring cells of the serving cell is determined according to the cell identifier CID of the target cell, where

[0528] when mod(CID, Q) < 6, FreqOffset = mod(CID, Q) × 2;

[0529] when mod(CID, Q) = 6, FreqOffset = 11;

[0530] where mod represents the remainder operation, Q is the total number of cells in the serving cell and the neighboring cells of the serving cell, Q is an integer greater than or equal to 2 and less than 7; CID is an integer greater than or equal to 0.

[0531] In an alternative embodiment, the number of REs occupied by each zero-power reference signal is 2;

[0532] The distribution mode of the time-domain symbols where the 2 REs are located is: the first distribution mode, or the second distribution mode;

[0533] where the first distribution mode is used to indicate that the 2 REs are located in 2 consecutive time-domain symbols;

[0534] The second distribution mode is used to indicate that the 2 REs are located in 1 time-domain symbol.

[0535] In an alternative embodiment, when the distribution mode of the time-domain symbols where the 2 REs are located is the second distribution mode, the time-domain symbols where the 2 REs are located are determined according to the cell identifier of the serving cell of the terminal device; where

[0536] when CID × 2T < SumCR, the time-domain symbols where the 2 REs are located are the starting time-domain symbols;

[0537] when SumCR ≤ CID × 2T < 2 × SumCR, the time-domain symbols where the 2 REs are located are the first time-domain symbol after the starting time-domain symbol;

[0538] where CID is the cell identifier, SumCR is the total number of subcarriers in a time-frequency resource unit, T is the number of subcarrier intervals, T is an integer greater than or equal to 1 or less than or equal to 6. T is less than or equal to SumCR / Q.

[0539] In an alternative embodiment, when the time-domain symbol distribution mode where the two REs are located is the first distribution mode, the subcarrier offset between the first subcarrier and the second subcarrier where the two REs are located is 1, 3, or 5; or,

[0540] when the time-domain symbol distribution mode where the two REs are located is the second distribution mode, the subcarrier offset between the first subcarrier and the second subcarrier where the two REs are located is 2, 4, or 6.

[0541] In an alternative embodiment, in one time-frequency resource unit for transmitting the uplink signal, the number of zero-power reference signals is 2;

[0542] the subcarriers where the time-frequency resources of the two zero-power reference signals are located are the same or different.

[0543] In an alternative embodiment, when the subcarriers where the two zero-power reference signals are located are different, the subcarrier offset between the subcarriers where the two zero-power reference signals are located is 1, 3, or 5.

[0544] In an alternative embodiment, the time-frequency resources of the zero-power reference signal include: P REs located on the time-domain symbol to be processed in one time-frequency resource unit for transmitting the uplink signal;

[0545] the frequency domain of the time-frequency resource unit includes 12 subcarriers; the subcarriers where the P REs are located are {i 1 , i 2 ,..., i P}, and the other subcarriers in the 12 subcarriers except the subcarriers where the P REs are located are {j 1 , j 2 ,…, j 12-P}; where P is an integer greater than or equal to 1 and less than 12;

[0546] The processing module is further configured to: obtain first data to be transmitted, where the first data is k - P data segments x 1 , x 2 ,..., x k-P , and each RE is used to carry data in one data segment; determine second data according to the first data and the DFT transform matrix W 12×k , where the second data x k-P+1 ,..., x k satisfies:

[0547]

[0548] Combine the first data and the second data into time-domain data x, where x = (x1 , x 2 , ..., x k ) T ; According to the DFT transform matrix W 12×k , perform DFT transform on the time-domain data x to obtain frequency-domain data y; where, y = (y 1 , y 2 , y 3 , ..., y 8 , y 9 , y 10 , y 11 , y 12 ) T , the uplink signals on the P REs are all 0; Use the frequency-domain data y as the uplink signal in the to-be-processed time-domain symbol; where, k is the number of time-domain symbols in the time-frequency resource unit, and k is greater than p.

[0549] In a possible implementation manner, the configuration information of the zero-power reference signal includes at least one of the following information:

[0550] In any time-frequency resource unit used to transmit the uplink signal, a configuration indication of whether the zero-power reference signal supports code division multiplexing packet CDM group; where, the configuration indication of whether the zero-power reference signal supports CDM group is used to indicate whether to configure the time-frequency resource where the zero-power reference signal is located according to the time-frequency resource where the DMRS in the uplink signal is located or the CDM configuration type corresponding to the DMRS;

[0551] The CDM configuration type of the DMRS; where, the CDM configuration type of the DMRS includes: the first CDM type, the second CDM type, and the third CDM type; where, the time-frequency resource of the DMRS is determined from the group resource set according to the CDM group ID corresponding to the DMRS, where the group resource set includes multiple group resources, different CDM group IDs correspond to different group resources in the group resource set, and at least two group resources in the multiple group resources are in different time-domain symbols;

[0552] Configuration methods for zero-power reference signals supporting CDM groups; wherein, the configuration methods include: a first configuration method and a second configuration method; for the zero-power reference signals using the first configuration method, the resource elements (REs) occupied by them are on the same subcarriers as the REs occupied by the DMRS; for the zero-power reference signals using the second configuration method, the subcarriers where they are located are the set of all subcarriers where the DMRSs of all CDM groups corresponding to the CDM configuration type are located, and among them, the subcarriers where the DMRSs of all CDM groups are located are part of the subcarriers in the time-frequency resource units for transmitting uplink signals.

[0553] The starting time domain symbol occupied by the zero-power reference signal of each CDM group;

[0554] The number of time domain symbols occupied by the zero-power reference signal of each CDM group;

[0555] The number of group resource units in each group resource.

[0556] In a possible implementation, the subcarriers where the zero-power reference signal is located are part of the subcarriers in the time-frequency resource units for transmitting uplink signals.

[0557] In a possible implementation, the uplink signal further includes DMRS; the subcarriers where the DMRS is located are determined according to the CDM group corresponding to the DMRS;

[0558] Among them, the time domain symbols and / or subcarriers where the DMRSs of different CDM groups are located are different;

[0559] The time-frequency resources where the zero-power reference signal is located are determined according to the time-frequency resources of the DMRS or the CDM configuration type.

[0560] In a possible implementation, the configuration method for the zero-power reference signal supporting the CDM group is the first configuration method;

[0561] The CDM configuration type of the DMRS is the first CDM type or the second CDM type; among them, the subcarriers where the DMRSs corresponding to different group IDs are located are different;

[0562] The identifier of the subcarriers where the zero-power reference signal is located is the same as the identifier of the subcarriers where the DMRS of the uplink signal is located.

[0563] In a possible implementation, the configuration method for the zero-power reference signal supporting the CDM group is the second configuration method;

[0564] The CDM configuration type of the DMRS is the first CDM type or the second CDM type; wherein, the subcarriers where the DMRSs corresponding to different group IDs are located are different;

[0565] The subcarriers where the zero-power reference signal is located include the subcarriers where the DMRSs of all CDM groups corresponding to the CDM configuration type are located;

[0566] The starting time-domain symbol of the REs occupied by the zero-power reference signal is the first time-domain symbol after the time-domain symbol where the DMRS is located.

[0567] In a possible implementation manner, the configuration manner of the zero-power reference signal supporting the CDM group is the second configuration manner;

[0568] The CDM configuration type of the DMRS is the third CDM type;

[0569] The time-frequency resources where the zero-power reference signal is located include the set of the time-frequency resources where the DMRSs of all CDM groups corresponding to the CDM configuration type are located excluding the time-frequency resources where the DMRS of the uplink signal is located, wherein, the time-frequency resources of the DMRS are determined from the group resource set according to the CDM group ID corresponding to the DMRS, wherein, the group resource set includes multiple group resources, different CDM group IDs correspond to different group resources in the group resource set, and the time-domain symbols where at least two of the multiple group resources are located are different; all the subcarriers where the DMRSs of all CDM groups are located are part of the subcarriers in the time-frequency resource unit for transmitting the uplink signal. The time-domain symbols where the DMRSs corresponding to at least two CDM groups supported by the third CDM type are located are different.

[0570] In a possible implementation manner, the CDM configuration type of the DMRS is the first CDM type or the second CDM type;

[0571] When the CDM configuration type of the DMRS is the first CDM type, the subcarriers where the zero-power reference signal is located include all subcarriers satisfying the first condition, and the first condition is that the remainder of the subcarrier offset modulo 2 is equal to all subcarriers of the CDM group ID;

[0572] When the CDM configuration type of the DMRS is the second CDM type, the subcarriers where the zero-power reference signal is located include all subcarriers satisfying the second condition, and the second condition is that the remainder of the subcarrier offset modulo 6 is equal to all subcarriers of the CDM group ID * 2 and the CDM group ID * 2 + 1.

[0573] In a possible implementation, each group resource includes at least two group resource units;

[0574] The time-domain symbols occupied by the at least two group resource units are the same, and the subcarriers occupied by the at least two group resource units are different;

[0575] Each group resource unit occupies at least one time-domain symbol;

[0576] Each group resource unit occupies at least one subcarrier;

[0577] Among them, all the subcarriers where the group resource units corresponding to all CDM groups are located are part of the subcarriers in the time-frequency resource unit.

[0578] In a possible implementation, the time-frequency resource unit for transmitting the uplink signal including the DMRS is a resource block (RB), and any one of the RBs includes 2 or 3 or 4 group resource units;

[0579] Each group resource unit occupies 2 consecutive time-domain symbols;

[0580] Each group resource unit occupies 2 consecutive subcarriers;

[0581] The number of time-domain symbols occupied by the group resource units of all CDM group IDs is 6;

[0582] The number of subcarriers occupied by the group resource units of all CDM group IDs is 4.

[0583] In a possible implementation, it is characterized in that, in the time-frequency resource unit for transmitting the uplink signal, the difference between the transmission powers of different time-domain symbols is less than a preset deviation power threshold.

[0584] In a possible implementation, in the time-frequency resource for transmitting the uplink signal, the transmission powers of different time-domain symbols are equal.

[0585] In a possible implementation, the time-frequency resource unit for transmitting the uplink signal is a resource block (RB); in any target time-domain symbol including the REs occupied by the zero-power reference signal, the transmission power of each valid RE is the transmission power of the target time-domain symbol divided by the number of valid REs;

[0586] Among them, the valid REs are the other REs on the target time-domain symbol except for the REs occupied by the zero-power reference signal.

[0587] In a possible implementation, the resource elements (REs) other than the REs occupied by the zero-power reference signal on the target time-domain symbol where the zero-power reference signal is located are data REs for carrying data.

[0588] In a second alternative embodiment of the communication device 1100:

[0589] The processing module 1101 may be configured to instruct the transmitting module 1102 to send DMRS to the network device;

[0590] Wherein, the time-frequency resources of the DMRS are determined from a group resource set according to the first identifier corresponding to the terminal device. The group resource set includes a plurality of group resources, and different first identifiers correspond to different group resources in the group resource set. At least two of the plurality of group resources are in different time-domain symbols.

[0591] Wherein, the time-domain symbols and / or subcarriers where the DMRSs corresponding to different first identifiers are located are different.

[0592] Wherein, the DMRS can be used by the network device to perform channel estimation, interference cancellation, and demodulation of the data carried in the uplink signal for the uplink signal containing the DMRS, etc.

[0593] In a possible implementation, the first identifier is the identifier of the CDM group corresponding to the terminal device.

[0594] In a possible implementation, each group resource includes at least two group resource units;

[0595] The at least two group resource units occupy the same time-domain symbol, and the at least two group resource units occupy different subcarriers;

[0596] Each group resource unit occupies at least one time-domain symbol; each group resource unit occupies at least one subcarrier.

[0597] In a possible implementation, the time-frequency resource unit for transmitting the uplink signal containing the DMRS is a resource block (RB). Any one of the RBs includes 2 or 3 or 4 group resource units;

[0598] Each group resource unit occupies 2 consecutive time-domain symbols;

[0599] Each group resource unit occupies 2 consecutive subcarriers;

[0600] The number of time-domain symbols occupied by the group resource units of all CDM group IDs is 6;

[0601] The number of subcarriers occupied by the group resource units of all CDM group IDs is 4.

[0602] Figure 24 Structural schematic of the communication device provided in the embodiment of the present application Figure 2 As Figure 12 shown, the communication device 1200 includes: a processing module 1201 and a receiving module 1203.

[0603] In a first alternative embodiment of the communication device 1200:

[0604] The receiving module 1203 is configured to receive an uplink signal including a zero-power reference signal sent by a terminal device, where, in the time-frequency resource used for sending the uplink signal, the transmission power of the uplink signal within the time-frequency resource range of the zero-power reference signal is zero;

[0605] The processing module 1201 is configured to perform channel estimation based on the uplink signal received in the time-frequency resource of the zero-power reference signal; and perform demodulation on the received uplink signal according to the result of the channel estimation.

[0606] In the embodiment of the present application, the device 1200 may further include: a sending module 1202 configured to send configuration information of a zero-power reference signal to a terminal device. In the embodiment of the present application, the device 1200 may further include a storage module 1204 configured to store relevant data and instructions.

[0607] In an alternative embodiment, the zero-power reference signal is the zero-power reference signal corresponding to the serving cell of the terminal device; the time-frequency resources of the zero-power reference signals corresponding to each cell in the cell group composed of the serving cell and the neighboring cells of the serving cell do not overlap with each other.

[0608] In an alternative embodiment, the configuration information of the zero-power reference information includes at least one of the following information:

[0609] In any time-frequency resource unit used for sending the uplink signal, the number of zero-power reference signals,

[0610] The number of resource elements RE occupied by each zero-power reference signal;

[0611] The starting time-domain symbol of the time-domain symbol range allowed to be occupied by each zero-power reference signal;

[0612] When the number of REs occupied by each zero-power reference signal is 2, the distribution mode of the time-domain symbols where the 2 REs are located;

[0613] At least one subcarrier where each of the zero-power reference signals is located;

[0614] When the number of REs occupied by each of the zero-power reference signals is 2, the subcarrier offset between the first subcarrier and the second subcarrier where the 2 REs are located;

[0615] When the number of zero-power reference signals is 2, an indication of whether the subcarriers where the 2 zero-power reference signals are located are the same;

[0616] When the subcarriers where the 2 zero-power reference signals are located are different, the subcarrier offset between the subcarriers where the 2 zero-power reference signals are located.

[0617] In an alternative embodiment, when the number of REs occupied by each of the zero-power reference signals is 1, the time domain symbol where the 1 RE is located is the starting time domain symbol of the time domain symbol range allowed for each of the zero-power reference signals;

[0618] When the number of REs occupied by each of the zero-power reference signals is 2, the time domain symbols where the 2 REs are located are at least one of the 2 time domain symbols starting from the starting time domain symbol;

[0619] Wherein, the uplink signal further includes DMRS; the starting time domain symbol of the time domain symbols allowed for each of the zero-power reference signals is any one of the following: the first time domain symbol after the time domain symbol where the time-frequency resource of the DMRS is located, or, the middle time domain symbol in the time-frequency resource unit; wherein, the middle time domain symbol is different from the time domain symbol where the time-frequency resource of the DMRS is located, or, the second time domain symbol after the first time domain symbol where the time-frequency resource of the DMRS is located.

[0620] In an alternative embodiment, the number of REs occupied by the zero-power reference signal of the serving cell of the terminal device is 1, and the number of REs occupied by the zero-power reference signal of the neighboring cell of the serving cell of the terminal device is 1; the first subcarriers corresponding to the serving cell and the neighboring cell of the serving cell are different, and the first subcarrier is the subcarrier where the zero-power reference signal is located.

[0621] In an alternative embodiment, the number of REs occupied by the zero-power reference signal corresponding to the target cell is 2, and the target cell is any one of the serving cell of the terminal device and the neighboring cells of the serving cell; the first subcarrier and the second subcarrier corresponding to the target cell are not adjacent to each other, and the first subcarrier and the second subcarrier are the subcarriers where the 2 REs corresponding to the target cell are located; the subcarriers where the REs occupied by the zero-power reference signals corresponding to different target cells in the same time domain symbol are different.

[0622] In an alternative embodiment, the time-frequency resource unit for transmitting the uplink signal includes 12 subcarriers; the frequency domain offset FreqOffset of the first subcarrier corresponding to any target cell in the serving cell and the neighboring cells of the serving cell is determined according to the cell identification CID of the target cell, where,

[0623] when mod(CID, Q) < 6, FreqOffset = mod(CID, Q) × 2;

[0624] when mod(CID, Q) = 6, FreqOffset = 11;

[0625] where, mod represents the remainder operation, Q is the total number of cells in the serving cell and the neighboring cells of the serving cell, Q is an integer greater than or equal to 2 and less than 7; CID is an integer greater than or equal to 0.

[0626] In an alternative embodiment, the number of REs occupied by each zero-power reference signal is 2;

[0627] The distribution manner of the time domain symbols where the 2 REs are located is: the first distribution manner, or, the second distribution manner;

[0628] where, the first distribution manner is used to indicate that the 2 REs are located in 2 consecutive time domain symbols;

[0629] The second distribution manner is used to indicate that the 2 REs are located in 1 time domain symbol.

[0630] In an alternative embodiment, when the distribution manner of the time domain symbols where the 2 REs are located is the second distribution manner, the time domain symbol where the 2 REs are located is determined according to the cell identification of the serving cell of the terminal device; where,

[0631] when CID × 2T < SumCR, the time domain symbol where the 2 REs are located is the starting time domain symbol;

[0632] When SumCR ≤ CID × 2T < 2 × SumCR, the time domain symbol where the two REs are located is the first time domain symbol after the starting time domain symbol;

[0633] where CID is the cell identifier, SumCR is the total number of subcarriers of a time-frequency resource unit, T is the number of subcarrier intervals, and T is an integer greater than or equal to 1 or less than or equal to 6. T is less than or equal to SumCR / Q.

[0634] In an alternative embodiment, when the distribution mode of the time domain symbols where the two REs are located is the first distribution mode, the subcarrier offset between the first subcarrier and the second subcarrier where the two REs are located is 1 or 3 or 5; or, when the distribution mode of the time domain symbols where the two REs are located is the second distribution mode, the subcarrier offset between the first subcarrier and the second subcarrier where the two REs are located is 2 or 4 or 6.

[0635] In an alternative embodiment, in a time-frequency resource unit for transmitting the uplink signal, the number of zero-power reference signals is two; the time-frequency resources of the two zero-power reference signals are on the same or different subcarriers.

[0636] In an alternative embodiment, when the subcarriers where the two zero-power reference signals are located are different, the subcarrier offset between the subcarriers where the two zero-power reference signals are located is 1 or 3 or 5.

[0637] In a possible implementation, the configuration information of the zero-power reference signal includes at least one of the following information:

[0638] In any time-frequency resource unit for transmitting the uplink signal, a configuration indication of whether the zero-power reference signal supports code division multiplexing packet CDM group; wherein, the configuration indication of whether the zero-power reference signal supports CDM group is used to indicate whether to configure the time-frequency resource where the zero-power reference signal is located according to the time-frequency resource where the DMRS in the uplink signal is located or the CDM configuration type corresponding to the DMRS;

[0639] The CDM configuration type of the DMRS; wherein, the CDM configuration type of the DMRS includes: the first CDM type, the second CDM type, and the third CDM type; wherein, the time-frequency resource of the DMRS is determined from a group resource set according to the CDM group ID corresponding to the DMRS, wherein the group resource set includes multiple group resources, and different CDM group IDs correspond to different group resources in the group resource set, and at least two of the multiple group resources are in different time domain symbols;

[0640] Configuration methods for zero-power reference signals supporting CDM groups; wherein, the configuration methods include: a first configuration method and a second configuration method; for the zero-power reference signals using the first configuration method, the resource elements (REs) occupied by them are on the same subcarriers as those of the DMRS; for the zero-power reference signals using the second configuration method, the subcarriers where they are located are the set of all subcarriers where the DMRSs of all CDM groups corresponding to the CDM configuration type are located, and among them, the subcarriers where the DMRSs of all CDM groups are located are part of the subcarriers in the time-frequency resource units for transmitting uplink signals.

[0641] The starting time domain symbol occupied by the zero-power reference signal of each CDM group;

[0642] The number of time domain symbols occupied by the zero-power reference signal of each CDM group;

[0643] The number of group resource units in each group resource.

[0644] In a possible implementation, the subcarriers where the zero-power reference signal is located are part of the time-frequency resource units for transmitting uplink signals.

[0645] In a possible implementation, the uplink signal further includes DMRS; the subcarriers where the DMRS is located are determined according to the CDM group corresponding to the DMRS;

[0646] Among them, the time domain symbols and / or subcarriers where the DMRSs of different CDM groups are located are different;

[0647] The time-frequency resources where the zero-power reference signal is located are determined according to the time-frequency resources of the DMRS or the CDM configuration type.

[0648] In a possible implementation, the configuration method for the zero-power reference signal supporting the CDM group is the first configuration method;

[0649] The CDM configuration type of the DMRS is the first CDM type or the second CDM type; among them, the subcarriers where the DMRSs corresponding to different group IDs are located are different;

[0650] The identifier of the subcarriers where the zero-power reference signal is located is the same as the identifier of the subcarriers where the DMRS of the uplink signal is located.

[0651] In a possible implementation, the configuration method for the zero-power reference signal supporting the CDM group is the second configuration method;

[0652] The CDM configuration type of the DMRS is the first CDM type or the second CDM type; wherein, the subcarriers where the DMRSs corresponding to different group IDs are located are different;

[0653] The subcarriers where the zero-power reference signal is located include the subcarriers where the DMRSs of all CDM groups corresponding to the CDM configuration type are located;

[0654] The starting time-domain symbol of the REs occupied by the zero-power reference signal is the first time-domain symbol after the time-domain symbol where the DMRS is located.

[0655] In a possible implementation manner, the configuration mode of the zero-power reference signal supporting the CDM group is the second configuration mode;

[0656] The CDM configuration type of the DMRS is the third CDM type;

[0657] The time-frequency resources where the zero-power reference signal is located include the set of the time-frequency resources where the DMRSs of all CDM groups corresponding to the CDM configuration type are located excluding the time-frequency resources where the DMRS of the uplink signal is located, wherein the time-frequency resources of the DMRS are determined from the group resource set according to the CDM group ID corresponding to the DMRS, wherein the group resource set includes multiple group resources, different CDM group IDs correspond to different group resources in the group resource set, and the time-domain symbols where at least two of the multiple group resources are located are different; all the subcarriers where the DMRSs of all CDM groups are located are part of the subcarriers in the time-frequency resource unit for transmitting the uplink signal. The time-domain symbols where the DMRSs corresponding to at least two CDM groups supported by the third CDM type are located are different.

[0658] In a possible implementation manner, the CDM configuration type of the DMRS is the first CDM type or the second CDM type;

[0659] When the CDM configuration type of the DMRS is the first CDM type, the subcarriers where the zero-power reference signal is located include all subcarriers satisfying the first condition, and the first condition is that the remainder of the subcarrier offset modulo 2 is equal to all subcarriers of the CDM group ID;

[0660] When the CDM configuration type of the DMRS is the second CDM type, the subcarriers where the zero-power reference signal is located include all subcarriers satisfying the second condition, and the second condition is that the remainder of the subcarrier offset modulo 6 is equal to all subcarriers of the CDM group ID * 2 and the CDM group ID * 2 + 1.

[0661] In a possible implementation, each group resource includes at least two group resource units;

[0662] The time-domain symbols occupied by the at least two group resource units are the same, and the subcarriers occupied by the at least two group resource units are different;

[0663] Each group resource unit occupies at least one time-domain symbol; each group resource unit occupies at least one subcarrier.

[0664] In a possible implementation,

[0665] The time-frequency resource unit for transmitting the uplink signal including the DMRS is a resource block (RB), and any one of the RBs includes 2 or 3 or 4 group resource units;

[0666] Each group resource unit occupies 2 consecutive time-domain symbols;

[0667] Each group resource unit occupies 2 consecutive subcarriers;

[0668] The number of time-domain symbols occupied by the group resource units of all CDM group IDs is 6;

[0669] The number of subcarriers occupied by the group resource units of all CDM group IDs is 4.

[0670] In the second alternative implementation manner of the communication device 1200:

[0671] The receiving module 1203 is configured to receive the DMRS sent by the terminal device; wherein, the time-frequency resource of the DMRS is determined from the group resource set according to the first identifier corresponding to the terminal device, wherein the group resource set includes a plurality of group resources, and different first identifiers correspond to different group resources in the group resource set, and at least two of the plurality of group resources are in different time-domain symbols.

[0672] The processing module 1201 is configured to demodulate the uplink signal including the DMRS according to the DMRS.

[0673] In a possible implementation, the first identifier is the identifier of the CDM group corresponding to the terminal device.

[0674] In a possible implementation, the time-domain symbol and / or subcarrier where the DMRS is located is determined according to the identifier of the CDM group corresponding to the terminal device and the CDM configuration type;

[0675] When the CDM configuration type is the third CDM type, the time domain symbol where the DMRS corresponding to the first CDM group is located is different from the time domain symbol where the DMRS corresponding to the second CDM group is located. The first CDM group is the CDM group corresponding to the terminal device, and the second CDM group is at least one other CDM group among at least two CDM groups including the first CDM group supported by the third CDM type.

[0676] In a possible implementation, each group resource includes at least two group resource units; the time domain symbols occupied by the at least two group resource units are the same, and the subcarriers occupied by the at least two group resource units are different;

[0677] Each group resource unit occupies at least one time domain symbol; each group resource unit occupies at least one subcarrier.

[0678] In a possible implementation, the time-frequency resource unit for transmitting the uplink signal including the DMRS is a resource block (RB). Any one of the RBs includes 2 or 3 or 4 group resource units;

[0679] Each group resource unit occupies 2 consecutive time domain symbols;

[0680] Each group resource unit occupies 2 consecutive subcarriers;

[0681] The number of time domain symbols occupied by the group resource units of all CDM group IDs is 6;

[0682] The number of subcarriers occupied by the group resource units of all CDM group IDs is 4.

[0683] Figure 25 This is the structural schematic diagram of the terminal device provided by the embodiments of the present application Figure 1 . As Figure 25 shown, the device 1300 in the embodiments of the present application may be the terminal device in the above method embodiments, and the device 1300 may be used to perform some or all of the functions of the terminal device in the above method embodiments. The device 1300 may include: a processor 1310, a baseband circuit 1313, a radio frequency circuit 1340, and an antenna 1350. Optionally, the device 1300 may further include a memory 1320. Each component of the device 1300 is coupled together through a bus 1360. Among them, the bus system 1360 includes not only a data bus, but also a power bus, a control bus, and a status signal bus. However, for the sake of clear illustration, various buses are labeled as the bus system 1360 in the figure.

[0684] The processor 1310 can be used to implement the control of the terminal device, execute the processing performed by the terminal device in the above embodiments, execute the processing procedures related to the terminal device in the above method embodiments and / or other procedures for the technologies described in this application, and can also run the operating system, be responsible for managing the bus, and execute programs or instructions stored in the memory.

[0685] The baseband circuit 1313, the radio frequency circuit 1340, and the antenna 1350 can be used to support wireless communication between the terminal device and the network device involved in the above embodiments.

[0686] In one example, the to-be-transmitted frame encapsulated by the PHY layer sent by the network device is received via the antenna 1350, filtered, amplified, down-converted, and digitized by the radio frequency circuit 1340, and then decoded by the baseband circuit 1313, and the data is unpacked according to the protocol and other baseband processing is performed. After that, the processor 1310 processes it to recover the service data and signaling information sent by the network device; in another example, the access control information of the cell carried by the terminal device can be processed by the processor 1310, encapsulated according to the protocol and encoded by the baseband circuit 1313, and further subjected to radio frequency processing such as analog conversion, filtering, amplification, and up-conversion by the radio frequency circuit 1340, and then sent to the network device via the antenna 1350.

[0687] The memory 1320 can be used to store the program code and data of the terminal device. The memory 1320 can be the Figure 11 storage module in. It can be understood that the baseband circuit 1313, the radio frequency circuit 1340, and the antenna 1350 can also be used to support the terminal device to communicate with other network entities. For example, they are used to support the communication between the terminal device and the network element on the core network side. Figure 13 In, the memory 1320 is shown as being separated from the processor 1310. However, those skilled in the art can easily understand that the memory 1320 or any part thereof can be located outside the device 1300. For example, the memory 1320 can include transmission lines and / or computing artifacts separated from the wireless node, and these media can all be accessed by the processor 1310 through the bus interface 1360. Alternatively, the memory 1320 or any part thereof can be integrated into the processor 1310. For example, it can be a cache and / or a general register.

[0688] It can be understood that Figure 13 only a simplified design of the terminal device is shown. For example, in actual applications, the terminal device can include any number of transmitters, receivers, processors, memories, etc., and all first nodes that can implement the present invention are within the protection scope of the present invention.

[0689] Note that when acting as a receiving end, the apparatus 1300 may also be used to perform some or all of the functions of the terminal device in the above method embodiments.

[0690] Figure 26 Structural schematic of the network device provided by the embodiments of the present application Figure 2 As Figure 26 shown, the apparatus 1400 of the embodiments of the present application may be the network device in the above method embodiments. The apparatus 1400 may be used to perform some or all of the functions of the network device in the above method embodiments. The apparatus 1400 may include: a processor 1410, a baseband circuit 1414, a radio frequency circuit 1440, and an antenna 1450. Optionally, the apparatus 1400 may further include a memory 1420. Each component of the apparatus 1400 is coupled together through a bus 1460. Among them, the bus system 1460 includes, in addition to a data bus, a power bus, a control bus, and a status signal bus. However, for the sake of clear illustration, various buses are labeled as the bus system 1460 in the figure.

[0691] The processor 1410 may be used to implement the control of the network device, used to perform the processing performed by the network device in the above embodiments, may execute the processing process related to the network device in the above method embodiments and / or other processes for the technology described in the present application, may also run an operating system, be responsible for managing the bus, and may execute programs or instructions stored in the memory.

[0692] The baseband circuit 1414, the radio frequency circuit 1440, and the antenna 1450 may be used to support wireless communication between the network device and the terminal device involved in the above embodiments.

[0693] In one example, the to-be-sent frame encapsulated by the PHY layer sent from the network device is received via the antenna 1450, filtered, amplified, down-converted, and digitized by the radio frequency circuit 1440, and then decoded by the baseband circuit 1414 and de-encapsulated according to the protocol for baseband processing of data. Then, the processor 1410 processes it to recover the service data and signaling information sent by the network device; in another example, the configuration information carried by the network device may be processed by the processor 1410, encapsulated according to the protocol by the baseband circuit 1414, encoded, etc. for baseband processing, and further subjected to radio frequency processing such as analog conversion, filtering, amplification, and up-conversion by the radio frequency circuit 1440, and then sent to the terminal device via the antenna 1450.

[0694] The memory 1420 may be used to store the program code and data of the network device. The memory 1420 may be Figure 12The storage module therein. It can be understood that the baseband circuit 1414, the radio frequency circuit 1440, and the antenna 1450 can also be used to support the communication between the network device and other network entities. For example, they are used to support the communication between the network device and the network elements on the core network side. Figure 14 In Figure 14 , the memory 1420 is shown as being separated from the processor 1410. However, those skilled in the art can easily understand that the memory 1420 or any part thereof can be located outside the device 1400. For example, the memory 1420 can include transmission lines and / or computing artifacts separated from the wireless node, and these media can all be accessed by the processor 1410 through the bus interface 1460. Alternatively, the memory 1420 or any part thereof can be integrated into the processor 1410. For example, it can be a cache and / or a general register.

[0695] It can be understood that Figure 14 Only a simplified design of the network device is shown. For example, in practical applications, the network device can include any number of transmitters, receivers, processors, memories, etc., and all network devices that can implement the present invention are within the protection scope of the present invention.

[0696] It should be noted that when acting as a receiving end, the device 1400 can also be used to perform some or all of the functions of the terminal device in the above method embodiments.

[0697] The embodiments of the present application further provide a chip system, including: a processor, the processor is coupled to a memory, and the memory is used to store programs or instructions. When the programs or instructions are executed by the processor, the chip system implements the methods in any of the above method embodiments.

[0698] Optionally, the processor in the chip system can be one or more. The processor can be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc. When implemented by software, the processor can be a general-purpose processor that implements by reading the software code stored in the memory.

[0699] Optionally, the memory in the chip system can also be one or more. The memory can be integrated with the processor or can be separately arranged from the processor, which is not limited in the present application. Exemplarily, the memory can be a non-transitory processor, such as a read-only memory ROM, which can be integrated on the same chip as the processor or can be separately arranged on different chips. The present application does not make specific limitations on the type of the memory and the setting manner of the memory and the processor.

[0700] Exemplarily, the chip system may be a field programmable gate array (FPGA), may be an application specific integrated circuit (ASIC), may also be a system on chip (SoC), may also be a central processing unit (CPU), may also be a network processor (NP), may also be a digital signal processing circuit (DSP), may also be a microcontroller unit (MCU), may also be a programmable logic device (PLD), or other integrated chips.

[0701] It should be understood that each step in the above method embodiments can be completed by the integrated logic circuit in the hardware of the processor or the instructions in the form of software. The method steps disclosed in combination with the embodiments of the present application can be directly embodied as being executed and completed by the hardware processor, or executed and completed by the combination of the hardware and software modules in the processor.

[0702] The embodiments of the present application further provide a computer-readable storage medium, in which computer-readable instructions are stored. When the computer reads and executes the computer-readable instructions, the computer is enabled to execute the method in any one of the above method embodiments.

[0703] The embodiments of the present application further provide a computer program product. When the computer reads and executes the computer program product, the computer is enabled to execute the method in any one of the above method embodiments.

[0704] The embodiments of the present application further provide a communication system, which includes a network device and a terminal device. The network device and the terminal device can execute any one of the above methods.

[0705] It should be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0706] It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0707] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) is integrated in the processor.

[0708] It should be understood that, on the premise of no conflict, the various embodiments described in this application and / or the technical features in each embodiment can be combined arbitrarily with each other, and the technical solutions obtained after the combination should also fall within the protection scope of this application.

[0709] For details of other technical solutions and technical effects of the embodiments of this application, reference can be made to the descriptions in other embodiments of this application.

[0710] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in this application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another, for example, the computer instructions can be transmitted from a website, a computer, a server, or a data center to another website, a computer, a server, or a data center by wire (such as coaxial cable, optical fiber, digital subscriber line) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, etc. that includes one or more available media integrated. The available media can be magnetic media (for example, floppy disks, hard disks, magnetic tapes), optical media (for example, DVDs), or semiconductor media (for example, solid state disks, SSDs), etc.

Claims

1. An uplink transmission method, characterized in that, it includes: The terminal device sends an uplink signal including a zero-power reference signal to the network device; wherein, in the time-frequency resource for sending the uplink signal, the transmission power of the uplink signal within the time-frequency resource range of the zero-power reference signal is zero; The configuration information of the zero-power reference signal includes the starting time-domain symbol of the time-domain symbol range allowed to be occupied by each zero-power reference signal; The configuration information of the zero-power reference signal further includes at least one of the following information: In any time-frequency resource unit for sending the uplink signal, the number of zero-power reference signals, The number of resource elements (REs) occupied by each zero-power reference signal; When the number of REs occupied by each zero-power reference signal is 2, the distribution manner of the time-domain symbols where the 2 REs are located; At least one subcarrier where each zero-power reference signal is located; When the number of REs occupied by each zero-power reference signal is 2, the subcarrier offset between the first subcarrier and the second subcarrier where the 2 REs are located; When the number of zero-power reference signals is 2, an indication of whether the subcarriers where the 2 zero-power reference signals are located are the same; When the subcarriers where the 2 zero-power reference signals are located are different, the subcarrier offset between the subcarriers where the 2 zero-power reference signals are located.

2. The method according to claim 1, characterized in that, When the number of REs occupied by each zero-power reference signal is 1, the time-domain symbol where the 1 RE is located is the starting time-domain symbol of the time-domain symbol range allowed to be occupied by each zero-power reference signal; When the number of REs occupied by each zero-power reference signal is 2, the time-domain symbols where the 2 REs are located are at least one of the 2 time-domain symbols starting from the starting time-domain symbol; wherein, the uplink signal further includes DMRS; the starting time-domain symbol of the time-domain symbol allowed to be occupied by each zero-power reference signal is any one of the following: The first time-domain symbol after the time-domain symbol where the time-frequency resource of the DMRS is located, or, The middle time-domain symbol in the time-frequency resource unit; wherein, the middle time-domain symbol is different from the time-domain symbol where the time-frequency resource of the DMRS is located, or, The second time-domain symbol after the first time-domain symbol where the time-frequency resource of the DMRS is located.

3. The method according to claim 2, characterized in that, The number of REs occupied by the zero-power reference signal of the serving cell of the terminal device is 1, and the number of REs occupied by the zero-power reference signal of the neighboring cell of the serving cell of the terminal device is 1; The first subcarriers corresponding to the serving cell and the neighboring cell of the serving cell are different, and the first subcarrier is the subcarrier where the zero-power reference signal is located.

4. The method according to claim 2, characterized in that, The number of REs occupied by the zero-power reference signal corresponding to the target cell is 2, and the target cell is any one of the serving cell of the terminal device and the neighboring cell of the serving cell. The first subcarrier and the second subcarrier corresponding to the target cell are non - adjacent to each other, and the first subcarrier and the second subcarrier are the subcarriers where the 2 REs corresponding to the target cell are located; The subcarriers where the REs occupied by the zero - power reference signals corresponding to different target cells in the same time - domain symbol are different.

5. The method according to claim 3 or 4, characterized in that, The time - frequency resource unit for transmitting the uplink signal includes 12 subcarriers; the frequency - domain offset FreqOffset of the first subcarrier corresponding to any target cell in the serving cell and the neighboring cells of the serving cell is determined according to the cell identity CID of the target cell, where, when mod(CID, Q) < 6, FreqOffset = mod(CID, Q)×2; when mod(CID, Q) = 6, FreqOffset = 11; where, mod represents the remainder operation, Q is the total number of cells in the serving cell and the neighboring cells of the serving cell, Q is an integer greater than or equal to 2 and less than 7; CID is an integer greater than or equal to 0.

6. The method according to claim 2 or 4, characterized in that, The number of REs occupied by each zero - power reference signal is 2; The distribution mode of the time - domain symbols where the 2 REs are located is: the first distribution mode, or, the second distribution mode; wherein, the first distribution mode is used to indicate that the 2 REs are located in 2 consecutive time - domain symbols; the second distribution mode is used to indicate that the 2 REs are located in 1 time - domain symbol.

7. The method according to claim 6, characterized in that, When the distribution mode of the time - domain symbols where the 2 REs are located is the second distribution mode, the time - domain symbols where the 2 REs are located are determined according to the cell identity of the serving cell of the terminal device; where, when CID×2T < SumCR, the time - domain symbols where the 2 REs are located are the starting time - domain symbols; when SumCR ≤ CID×2T < 2×SumCR, the time - domain symbols where the 2 REs are located are the first time - domain symbol after the starting time - domain symbol; where, CID is the cell identity, SumCR is the total number of subcarriers in a time - frequency resource unit, T is the number of subcarrier intervals, and T is an integer greater than or equal to 1 or less than or equal to 6.

8. The method according to claim 1, characterized in that, The configuration information of the zero - power reference signal further includes at least one of the following information: In any time - frequency resource unit used for transmitting the uplink signal, a configuration indication of whether the zero - power reference signal supports code - division multiplexing group CDM group; where, the configuration indication of whether the zero - power reference signal supports CDM group is used to indicate whether to configure the time - frequency resource where the zero - power reference signal is located according to the time - frequency resource where the DMRS in the uplink signal is located or the CDM configuration type corresponding to the DMRS. The CDM configuration type of the DMRS; wherein, the CDM configuration type of the DMRS includes: a first CDM type, a second CDM type, and a third CDM type; wherein, the time-frequency resources of the DMRS are determined from a group resource set according to the CDM group ID corresponding to the DMRS, wherein the group resource set includes multiple group resources, different CDM group IDs correspond to different group resources in the group resource set, and at least two of the multiple group resources are in different time-domain symbols; The configuration method for the zero-power reference signal supporting the CDM group; wherein, the configuration method includes: a first configuration method and a second configuration method; the resource elements (REs) occupied by the zero-power reference signal using the first configuration method are on the same subcarriers as the REs occupied by the DMRS; the subcarriers where the zero-power reference signal using the second configuration method is located are the set of all subcarriers where the DMRSs of all CDM groups corresponding to the CDM configuration type are located, wherein the subcarriers where the DMRSs of all CDM groups are located are part of the subcarriers in the time-frequency resource unit for transmitting the uplink signal; The starting time-domain symbol occupied by the zero-power reference signal of each CDM group; The number of time-domain symbols occupied by the zero-power reference signal of each CDM group; The number of group resource units in each group resource.

9. According to the method described in claim 8, it is characterized in that, the subcarriers where the zero-power reference signal is located are part of the subcarriers in the time-frequency resource unit for transmitting the uplink signal.

10. According to the method described in claim 9, it is characterized in that, the configuration method for the zero-power reference signal supporting the CDM group is the second configuration method; the CDM configuration type of the DMRS is the third CDM type; the time-frequency resources where the zero-power reference signal is located include the set of the time-frequency resources where the DMRSs of all CDM groups corresponding to the CDM configuration type are located excluding the time-frequency resources where the DMRS of the uplink signal is located, wherein the time-frequency resources of the DMRS are determined from a group resource set according to the CDM group ID corresponding to the DMRS, wherein the group resource set includes multiple group resources, different CDM group IDs correspond to different group resources in the group resource set, and at least two of the multiple group resources are in different time-domain symbols; all the subcarriers where the DMRSs of all CDM groups are located are part of the subcarriers in the time-frequency resource unit for transmitting the uplink signal.

11. According to the method described in claim 10, it is characterized in that, each group resource includes at least two group resource units; the at least two group resource units occupy the same time-domain symbol and different subcarriers; each group resource unit occupies at least one time-domain symbol; each group resource unit occupies at least one subcarrier.

12. The method according to claim 11, wherein, the time-frequency resource unit for transmitting the uplink signal including the DMRS is a resource block RB, and any one of the RBs includes 2 or 3 or 4 group resource units; each group resource unit occupies 2 consecutive time-domain symbols; each group resource unit occupies 2 consecutive subcarriers; the number of time-domain symbols occupied by the group resource units of all CDM group IDs is 6; the number of subcarriers occupied by the group resource units of all CDM group IDs is 4.

13. The method according to any one of claims 1-4, 7-8, 10-12, wherein, in the time-frequency resource unit for transmitting the uplink signal, the difference between the transmission powers of different time-domain symbols is less than a preset deviation power threshold.

14. The method according to claim 13, wherein, in the time-frequency resource for transmitting the uplink signal, the transmission powers of different time-domain symbols are equal.

15. The method according to claim 14, wherein, the time-frequency resource unit for transmitting the uplink signal is a resource block RB; in any target time-domain symbol including the REs occupied by the zero-power reference signal, the transmission power of each valid RE is the transmission power of the target time-domain symbol divided by the number of valid REs; wherein, the valid REs are the other REs on the target time-domain symbol except for the REs occupied by the zero-power reference signal.

16. The method according to claim 15, wherein, the REs on the target time-domain symbol where the zero-power reference signal is located, except for the REs occupied by the zero-power reference signal, are data REs for carrying data.

17. An uplink transmission method, wherein, comprising: a network device receives an uplink signal including a zero-power reference signal sent by a terminal device, wherein, in the time-frequency resource for transmitting the uplink signal, the transmission power of the uplink signal within the time-frequency resource range of the zero-power reference signal is zero; performs channel estimation according to the uplink signal received in the time-frequency resource of the zero-power reference signal; demodulates the received uplink signal according to the result of the channel estimation; wherein, the configuration information of the zero-power reference signal includes the starting time-domain symbol of the time-domain symbol range allowed to be occupied by each zero-power reference signal; the configuration information of the zero-power reference signal further includes at least one of the following information: the number of zero-power reference signals in any time-frequency resource unit for transmitting the uplink signal, the number of resource elements REs occupied by each zero-power reference signal; when the number of REs occupied by each zero-power reference signal is 2, the distribution manner of the time-domain symbols where the 2 REs are located; at least one subcarrier where each zero-power reference signal is located; when the number of REs occupied by each zero-power reference signal is 2, the subcarrier offset between the first subcarrier and the second subcarrier where the 2 REs are located; An indication of whether the subcarriers where the two zero-power reference signals are located are the same when the number of zero-power reference signals is two; When the subcarriers where the two zero-power reference signals are located are different, the subcarrier offset between the subcarriers where the two zero-power reference signals are located.

18. The method according to claim 17, characterized in that when the number of REs occupied by each of the zero-power reference signals is 1, the time-domain symbol where the 1 RE is located is the starting time-domain symbol of the range of time-domain symbols allowed to be occupied by each of the zero-power reference signals; when the number of REs occupied by each of the zero-power reference signals is 2, the time-domain symbols where the 2 REs are located are at least one of the two time-domain symbols starting from the starting time-domain symbol; wherein, the uplink signal further includes DMRS; the starting time-domain symbol of the range of time-domain symbols allowed to be occupied by each of the zero-power reference signals is any one of the following: the first time-domain symbol after the time-domain symbol where the time-frequency resource of the DMRS is located, or, the middle time-domain symbol in the time-frequency resource unit; wherein, the middle time-domain symbol is different from the time-domain symbol where the time-frequency resource of the DMRS is located, or, the second time-domain symbol after the first time-domain symbol where the time-frequency resource of the DMRS is located.

19. The method according to claim 18, characterized in that the number of REs occupied by the zero-power reference signal of the serving cell of the terminal device is 1, and the number of REs occupied by the zero-power reference signal of the neighboring cell of the serving cell of the terminal device is 1; the first subcarriers corresponding to the serving cell and the neighboring cell of the serving cell are different, and the first subcarrier is the subcarrier where the zero-power reference signal is located.

20. The method according to claim 19, characterized in that the number of REs occupied by the zero-power reference signal corresponding to the target cell is 2, and the target cell is any one of the serving cell of the terminal device and the neighboring cell of the serving cell; the first subcarrier and the second subcarrier corresponding to the target cell are not adjacent to each other, and the first subcarrier and the second subcarrier are the subcarriers where the 2 REs corresponding to the target cell are located; The subcarriers where the REs occupied by the zero-power reference signals corresponding to different target cells in the same time-domain symbol are different.

21. The method according to claim 19 or 20, characterized in that the time-frequency resource unit for transmitting the uplink signal includes 12 subcarriers; the frequency-domain offset FreqOffset of the first subcarrier corresponding to any target cell in the serving cell and the neighboring cell of the serving cell is determined according to the cell identifier CID of the target cell, wherein, when mod(CID, Q) = 6, FreqOffset = mod(CID, Q) × 2; when mod(CID, Q) < 6, FreqOffset = 11; Wherein, mod represents the modulo operation, Q is the total number of cells of the serving cell and its neighboring cells, and Q is an integer greater than or equal to 2 and less than 7; CID is an integer greater than or equal to 0.

22. According to the method described in any one of claims 18-20, characterized in that the number of REs occupied by each of the zero-power reference signals is 2; the distribution mode of the time-domain symbols where the 2 REs are located is: the first distribution mode, or, the second distribution mode; wherein, the first distribution mode is used to indicate that the 2 REs are located in 2 consecutive time-domain symbols; the second distribution mode is used to indicate that the 2 REs are located in 1 time-domain symbol.

23. According to the method described in claim 22, characterized in that when the distribution mode of the time-domain symbols where the 2 REs are located is the second distribution mode, the time-domain symbols where the 2 REs are located are determined according to the cell identifier of the serving cell of the terminal device; wherein, when CID×2T<SumCR, the time-domain symbols where the 2 REs are located are the starting time-domain symbols; when SumCR≤CID×2T<2×SumCR, the time-domain symbols where the 2 REs are located are the 1st time-domain symbol after the starting time-domain symbol; wherein, CID is the cell identifier, SumCR is the total number of subcarriers of a time-frequency resource unit, T is the number of subcarrier intervals, and T is an integer greater than or equal to 1 or less than or equal to 6.

24. According to the method described in claim 17, characterized in that the configuration information of the zero-power reference signal includes at least one of the following information: In any time-frequency resource unit for transmitting the uplink signal, a configuration indication of whether the zero-power reference signal supports code-division multiplexing packet CDM group; wherein, the configuration indication of whether the zero-power reference signal supports CDM group is used to indicate whether to configure the time-frequency resource where the zero-power reference signal is located according to the time-frequency resource where the DMRS in the uplink signal is located or the CDM configuration type corresponding to the DMRS; the CDM configuration type of the DMRS; wherein, the CDM configuration type of the DMRS includes: the first CDM type, the second CDM type, the third CDM type; wherein, the time-frequency resource of the DMRS is determined from the group resource set according to the CDM group ID corresponding to the DMRS, wherein, the group resource set includes multiple group resources, different CDM group IDs correspond to different group resources in the group resource set, and the time-domain symbols where at least two of the multiple group resources are located are different; Configuration methods for zero-power reference signals supporting CDM groups; wherein, the configuration methods include: a first configuration method and a second configuration method; for the zero-power reference signals using the first configuration method, the resource elements (REs) occupied are on the same subcarriers as those of the DMRS; for the zero-power reference signals using the second configuration method, the subcarriers where the zero-power reference signals are located are the set of all subcarriers where the DMRSs of all CDM groups corresponding to the CDM configuration type are located, and among them, the subcarriers where the DMRSs of all CDM groups are located are partial subcarriers in the time-frequency resource units for transmitting uplink signals. The starting time-domain symbol occupied by the zero-power reference signal of each CDM group. The number of time-domain symbols occupied by the zero-power reference signal of each CDM group. The number of group resource units in each group resource.

25. According to the method described in claim 24, characterized in that, the subcarriers where the zero-power reference signals are located are partial subcarriers of the time-frequency resource units for transmitting uplink signals.

26. According to the method described in claim 25, characterized in that, the configuration method for the zero-power reference signals supporting CDM groups is the second configuration method; the CDM configuration type of the DMRS is the third CDM type; the time-frequency resources where the zero-power reference signals are located include the set of the time-frequency resources where the DMRSs of all CDM groups corresponding to the CDM configuration type are located excluding the time-frequency resources where the DMRSs of the uplink signals are located, and among them, the time-frequency resources of the DMRS are determined from the group resource set according to the CDM group ID corresponding to the DMRS, where the group resource set includes multiple group resources, different CDM group IDs correspond to different group resources in the group resource set, and the time-domain symbols where at least two group resources among the multiple group resources are located are different; all subcarriers where the DMRSs of all CDM groups are located are partial subcarriers in the time-frequency resource units for transmitting uplink signals.

27. According to the method described in claim 26, characterized in that, each group resource includes at least two group resource units; the at least two group resource units occupy the same time-domain symbols and different subcarriers; each group resource unit occupies at least one time-domain symbol; each group resource unit occupies at least one subcarrier.

28. According to the method described in claim 27, characterized in that, the time-frequency resource units for transmitting uplink signals containing the DMRS are resource blocks (RBs), and any one of the RBs includes 2 or 3 or 4 group resource units; each group resource unit occupies 2 consecutive time-domain symbols; each group resource unit occupies 2 consecutive subcarriers; the number of time-domain symbols occupied by the group resource units of all CDM group IDs is 6; the number of subcarriers occupied by the group resource units of all CDM group IDs is 4.

29. A method for transmitting reference signals, characterized in that, comprising: A terminal device sends an uplink signal including DMRS and zero-power reference signals to a network device. In the time-frequency resources for transmitting the DMRS, the transmission power of the uplink signal within the range of the time-frequency resources of the zero-power reference signals is zero; wherein, the time-frequency resources of the DMRS are determined from a group resource set according to a first identifier corresponding to the terminal device, wherein the group resource set includes a plurality of group resources, different first identifiers correspond to different group resources in the group resource set, and at least two of the plurality of group resources are in different time domain symbols; The configuration information of the zero-power reference signals includes the starting time domain symbol of the time domain symbol range allowed to be occupied by each zero-power reference signal; The configuration information of the zero-power reference signals further includes at least one of the following information: In any time-frequency resource unit for transmitting the uplink signal, the number of zero-power reference signals, The number of resource elements (REs) occupied by each zero-power reference signal; When the number of REs occupied by each zero-power reference signal is 2, the distribution manner of the time domain symbols where the 2 REs are located; At least one subcarrier where each zero-power reference signal is located; When the number of REs occupied by each zero-power reference signal is 2, the subcarrier offset between the first subcarrier and the second subcarrier where the 2 REs are located; When the number of zero-power reference signals is 2, an indication of whether the subcarriers where the 2 zero-power reference signals are located are the same; When the subcarriers where the 2 zero-power reference signals are located are different, the subcarrier offset between the subcarriers where the 2 zero-power reference signals are located.

30. The method according to claim 29, characterized in that, The first identifier is the identifier of the CDM group corresponding to the terminal device.

31. The method according to claim 30, characterized in that, Each group resource includes at least two group resource units; The at least two group resource units occupy the same time domain symbol, and the at least two group resource units occupy different subcarriers; Each group resource unit occupies at least one time domain symbol; each group resource unit occupies at least one subcarrier.

32. The method according to claim 31, characterized in that, The time-frequency resource unit for transmitting the uplink signal including the DMRS is a resource block (RB), and any one of the RBs includes 2 or 3 or 4 group resource units; Each group resource unit occupies 2 consecutive time domain symbols; Each group resource unit occupies 2 consecutive subcarriers; The total number of time domain symbols occupied by the group resource units of all CDM group IDs is 6; The total number of subcarriers occupied by the group resource units of all CDM group IDs is 4.

33. A method for transmitting reference signals, characterized in that, comprising: The network device receives an uplink signal sent by a terminal device and containing DMRS and zero-power reference signals. In the time-frequency resources used for transmitting the DMRS, the transmission power of the uplink signal within the range of the time-frequency resources of the zero-power reference signals is zero; Wherein, the time-frequency resources of the DMRS are determined from a group resource set according to a first identifier corresponding to the terminal device. The group resource set includes multiple group resources, and different first identifiers correspond to different group resources in the group resource set. At least two of the multiple group resources are in different time domain symbols; The configuration information of the zero-power reference signals includes the starting time domain symbol of the range of time domain symbols allowed to be occupied by each zero-power reference signal; The configuration information of the zero-power reference signals further includes at least one of the following information: In any time-frequency resource unit used for transmitting the uplink signal, the number of zero-power reference signals, The number of resource elements (REs) occupied by each zero-power reference signal; When the number of REs occupied by each zero-power reference signal is 2, the distribution manner of the time domain symbols where the 2 REs are located; At least one subcarrier where each zero-power reference signal is located; When the number of REs occupied by each zero-power reference signal is 2, the subcarrier offset between the first subcarrier and the second subcarrier where the 2 REs are located; When the number of zero-power reference signals is 2, an indication of whether the subcarriers where the 2 zero-power reference signals are located are the same; When the subcarriers where the 2 zero-power reference signals are located are different, the subcarrier offset between the subcarriers where the 2 zero-power reference signals are located.

34. According to the method described in claim 33, It is characterized in that, The first identifier is the identifier of the CDM group corresponding to the terminal device.

35. According to the method described in claim 34, It is characterized in that, Each group resource includes at least two group resource units; The at least two group resource units occupy the same time domain symbol, and the at least two group resource units occupy different subcarriers; Each group resource unit occupies at least one time domain symbol; Each group resource unit occupies at least one subcarrier.

36. According to the method described in claim 35, It is characterized in that, The time-frequency resource unit used for transmitting the uplink signal containing the DMRS is a resource block (RB). Any RB includes 2 or 3 or 4 group resource units; Each group resource unit occupies 2 consecutive time domain symbols; Each group resource unit occupies 2 consecutive subcarriers; The number of time domain symbols occupied by the group resource units of all CDM group IDs is 6; The number of subcarriers occupied by the group resource units of all CDM group IDs is 4.

37. A communication device, It is characterized in that, The communication device includes a processing module and a transmitting module, The processing module is used to instruct the transmitting module to send an uplink signal containing zero-power reference signals to the network device; Among them, in the time-frequency resources for transmitting the uplink signal, the transmission power of the uplink signal within the time-frequency resources of the zero-power reference signal is zero; The configuration information of the zero-power reference signal includes the starting time-domain symbol of the time-domain symbol range allowed to be occupied by each zero-power reference signal; The configuration information of the zero-power reference signal further includes at least one of the following information: In any time-frequency resource unit for transmitting the uplink signal, the number of zero-power reference signals, The number of resource elements (REs) occupied by each zero-power reference signal; When the number of REs occupied by each zero-power reference signal is 2, the distribution manner of the time-domain symbols where the 2 REs are located; At least one subcarrier where each zero-power reference signal is located; When the number of REs occupied by each zero-power reference signal is 2, the subcarrier offset between the first subcarrier and the second subcarrier where the 2 REs are located; When the number of zero-power reference signals is 2, an indication of whether the subcarriers where the 2 zero-power reference signals are located are the same; When the subcarriers where the 2 zero-power reference signals are located are different, the subcarrier offset between the subcarriers where the 2 zero-power reference signals are located.

38. A communication device, Characterized in that, The communication device includes a processing module and a transmitting module, The processing module is used to instruct the transmitting module to transmit an uplink signal including DMRS and zero-power reference signals. In the time-frequency resources for transmitting the DMRS, the transmission power of the uplink signal within the time-frequency resources of the zero-power reference signal is zero; Among them, the time-frequency resources of the DMRS are determined from a group resource set according to a first identifier corresponding to the terminal device. Among them, the group resource set includes multiple group resources, and different first identifiers correspond to different group resources in the group resource set, and at least two group resources among the multiple group resources are in different time-domain symbols; The configuration information of the zero-power reference signal includes the starting time-domain symbol of the time-domain symbol range allowed to be occupied by each zero-power reference signal; The configuration information of the zero-power reference signal further includes at least one of the following information: In any time-frequency resource unit for transmitting the uplink signal, the number of zero-power reference signals, The number of resource elements (REs) occupied by each zero-power reference signal; When the number of REs occupied by each zero-power reference signal is 2, the distribution manner of the time-domain symbols where the 2 REs are located; At least one subcarrier where each zero-power reference signal is located; When the number of REs occupied by each zero-power reference signal is 2, the subcarrier offset between the first subcarrier and the second subcarrier where the 2 REs are located; When the number of zero-power reference signals is 2, an indication of whether the subcarriers where the 2 zero-power reference signals are located are the same; When the subcarriers where the 2 zero-power reference signals are located are different, the subcarrier offset between the subcarriers where the 2 zero-power reference signals are located.

39. A communication device, Characterized in that, The communication device includes a processing module and a receiving module; The receiving module is configured to receive an uplink signal including a zero-power reference signal sent by a terminal device. Among the time-frequency resources for transmitting the uplink signal, the transmission power of the uplink signal within the time-frequency resources of the zero-power reference signal is zero; The processing module is configured to perform channel estimation based on the uplink signal received within the time-frequency resources of the zero-power reference signal; and demodulate the received uplink signal according to the result of the channel estimation; The configuration information of the zero-power reference signal includes the starting time-domain symbol of the time-domain symbol range allowed to be occupied by each zero-power reference signal; Wherein, the configuration information of the zero-power reference signal includes the starting time-domain symbol of the time-domain symbol range allowed to be occupied by each zero-power reference signal; The configuration information of the zero-power reference signal further includes at least one of the following information: The number of zero-power reference signals in any time-frequency resource unit for transmitting the uplink signal, The number of resource elements (REs) occupied by each zero-power reference signal; When the number of REs occupied by each zero-power reference signal is 2, the distribution manner of the time-domain symbols where the 2 REs are located; At least one subcarrier where each zero-power reference signal is located; When the number of REs occupied by each zero-power reference signal is 2, the subcarrier offset between the first subcarrier and the second subcarrier where the 2 REs are located; An indication of whether the subcarriers where 2 zero-power reference signals are located are the same when the number of zero-power reference signals is 2; When the subcarriers where the 2 zero-power reference signals are located are different, the subcarrier offset between the subcarriers where the 2 zero-power reference signals are located.

40. A communication device, Characterized in that, The communication device includes a processing module and a receiving module, The processing module is configured to instruct the receiving module to receive an uplink signal including DMRS and a zero-power reference signal sent by a terminal device. Among the time-frequency resources for transmitting the DMRS, the transmission power of the uplink signal within the time-frequency resources of the zero-power reference signal is zero; Wherein, the time-frequency resources of the DMRS are determined from a group resource set according to a first identifier corresponding to the terminal device. The group resource set includes multiple group resources, and different first identifiers correspond to different group resources in the group resource set. At least two of the multiple group resources are located in different time-domain symbols; The configuration information of the zero-power reference signal includes the starting time-domain symbol of the time-domain symbol range allowed to be occupied by each zero-power reference signal; The configuration information of the zero-power reference signal further includes at least one of the following information: The number of zero-power reference signals in any time-frequency resource unit for transmitting the uplink signal, The number of resource elements (REs) occupied by each zero-power reference signal; When the number of REs occupied by each zero-power reference signal is 2, the distribution manner of the time-domain symbols where the 2 REs are located; At least one subcarrier where each of the zero-power reference signals is located; When the number of REs occupied by each of the zero-power reference signals is 2, the subcarrier offset between the first subcarrier and the second subcarrier where the 2 REs are located; When the number of zero-power reference signals is 2, an indication of whether the subcarriers where the 2 zero-power reference signals are located are the same; When the subcarriers where the 2 zero-power reference signals are located are different, the subcarrier offset between the subcarriers where the 2 zero-power reference signals are located.

41. A computer storage medium, characterized in that, it includes a computer program which, when executed on a communication device, causes the communication device to execute the method according to any one of claims 1-36.

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