Communication method and device

Abstract

The present application provides a communication method and apparatus for enhancing interference randomization and improving channel estimation performance, the method includes: transmitting configuration information of a reference signal; and receiving the reference signal via M antenna ports based on the configuration information, where M is an integer greater than 0, the M antenna ports include at least one first antenna port, and a comb tooth occupied by the first antenna port is determined based on at least a first offset, and the first offset is determined based on at least a time domain resource occupied by the first antenna port and / or a frequency domain resource occupied by the first antenna port.

Description

[Technical Field]

[0001]

[0001] This application claims priority to Chinese Patent Application No. 202210469116.4 entitled "Communication Method and Apparatus" filed with the State Intellectual Property Office of China on April 29, 2022, and Chinese Patent Application No. 202210969093.3 entitled "Communication Method and Apparatus" filed with the State Intellectual Property Office of China on August 12, 2022, both of which are incorporated herein by reference in their entireties.

[0002]

[0002] Technical field This application relates to the field of communications, and more particularly to communications methods and apparatus. [Background technology]

[0003]

[0003] A network device can acquire uplink channel information of a terminal device by using a sounding reference signal (SRS) transmitted by the terminal device; or can acquire downlink channel information of the terminal device based on channel reciprocity. Furthermore, the network device can schedule the terminal device based on the uplink channel information or the downlink channel information. However, the physical resources used by the terminal device to transmit the SRS follow a fixed rule, which does not lead to interference randomization or channel estimation. Summary of the Invention

[0004]

[0004] Embodiments of the present application provide a communication method and apparatus to enhance interference randomization and improve channel estimation performance.

[0005]

[0005] In order to achieve the above objectives, the following technical solutions are used in this application:

[0006]

[0006] According to a first aspect, there is provided a communication method, comprising: transmitting configuration information; and receiving reference signals via M antenna ports based on the configuration information, where the configuration information indicates a configuration of the reference signals, M is an integer greater than 0, the M antenna ports include at least one first antenna port, and a comb occupied by the first antenna port is determined based on at least a first offset, the first offset is an integer greater than 0, and the first offset is determined based on at least a cell identifier and a time domain resource occupied by the first antenna port; or the first offset is determined based on a cyclic shift value occupied by the first antenna port.

[0007]

[0007] According to the method provided in the first aspect, the comb teeth occupied by the first antenna port of the terminal device are determined based on a first offset, so that the frequency domain resources (comb teeth) occupied by the terminal device may change randomly at different transmission times. In this way, the terminal devices that cause interference to the terminal device change randomly. Therefore, frequency domain interference randomization is realized, and a better interference randomization effect can be achieved.

[0008] Alternatively, according to the method provided in the first aspect, a cyclic shift value is introduced. The comb teeth occupied by the first antenna port are obtained based on a first offset, and the value of the first offset is related to the cyclic shift value. In this case, the comb teeth occupied by the first antenna port are affected by the cyclic shift value and the first offset. In this way, the comb teeth occupied by each antenna port and the cyclic shift value change randomly at different transmission times, and the antenna ports that cause interference to the antenna ports of the terminal device also change randomly at different transmission times. At the same transmission time, different antenna ports cause interference to different antenna ports of the terminal device. In this way, two-dimensional interference randomization in the code domain and the frequency domain can be achieved, further improving the interference randomization effect and accelerating the interference randomization convergence speed.

[0009] In a possible design manner, the first offset is determined based on at least a cell identifier and a time domain resource occupied by the first antenna port. Alternatively, the first offset can be determined based on one or more of the following parameters: the number of slots included in each system frame, the number of orthogonal frequency division multiplexing (OFDM) symbols included in each slot, a comb tooth number, and a comb tooth offset, where the comb tooth number is determined based on a transmission bandwidth m of the reference signal. SRS,bhop where ∑ is the number of comb teeth included in ∑ ...

[0010]

[0010] In a possible design scheme, the time domain resource occupied by the first antenna port includes one or more OFDM symbols, and the one or more OFDM symbols included in the time domain resource occupied by the first antenna port can be determined based on one or more of the following parameters: a system frame number corresponding to the first antenna port, a slot number corresponding to the first antenna port, and an OFDM symbol number corresponding to the first antenna port.

[0011]

[0011] In other words, the number of OFDM symbols included in the time domain resource occupied by the first antenna port is not limited in this application.

[0012] Optionally, the time domain resources occupied by the M antenna ports may be the same or different.

[0013] In a possible design, the first offset may be a first random number. In other words, the first offset may be a random number. For example, the first offset may be a random number greater than 0.

[0014] In a possible design, the first offset or the first random number is:

[0015]

number

[0016]

[0015] The comb teeth occupied by the first antenna port of the terminal device are determined based on the first offset, so that the frequency domain resources (comb teeth) occupied by the terminal device may randomly change at different transmission times. In this way, the terminal devices that cause interference to the terminal device may randomly change. Therefore, a better interference randomization effect can be achieved.

[0017]

[0016] In a possible design scheme, the M antenna ports may further include at least one second antenna port, and the comb teeth occupied by the second antenna port may be determined based on at least a second offset, where the second offset is an integer greater than 0, and the second offset may be determined based on at least a cell identifier and a time domain resource occupied by the second antenna port, and the second offset is different from the first offset.

[0018]

[0017] In this way, the comb teeth occupied by the first antenna port of the terminal device are determined based on the first offset, and the comb teeth occupied by the second antenna port of the terminal device are determined based on the second offset. As a result, the comb teeth occupied by the antenna ports of the terminal device vary randomly at different transmission times, and the intervals between multiple comb teeth occupied by the antenna port of the same terminal device can also vary randomly. In this way, the antenna ports that cause interference to the antenna ports of the terminal device are random at different transmission times, and at the same transmission time, the antenna ports that cause interference to the antenna ports of the terminal device that occupy different comb teeth can be different antenna ports of the same terminal device. This realizes frequency-domain interference randomization, further improving the degree of freedom of frequency-domain resources occupied by the antenna ports of the terminal device, and further improving the interference randomization effect.

[0019] In a possible design manner, the second offset may be determined based on at least a cell identifier and a time domain resource occupied by the second antenna port. Alternatively, the second offset may be determined based on one or more of the following parameters: a number of slots included in each system frame, a number of OFDM symbols included in each slot, a comb number, and a comb offset, where the comb number is determined based on a transmission bandwidth m of the reference signal. SRS,bhop where ∑ is the number of comb teeth included in ∑ ...

[0020]

[0019] In a possible design manner, the time domain resource occupied by the second antenna port may include one or more OFDM symbols, and the one or more OFDM symbols that may be included in the time domain resource occupied by the second antenna port are determined based on one or more of the following parameters: a system frame number corresponding to the second antenna port, a slot number corresponding to the second antenna port, and an OFDM symbol number corresponding to the second antenna port. In other words, the number of OFDM symbols included in the time domain resource occupied by the second antenna port is not limited in the present application.

[0021] In a possible design scenario, the second offset may be a second random number. In other words, the second offset may be a random number.

[0022] In a possible design, the second random number is:

[0023]

number

[0024]

[0022] In a possible design manner, the second offset may be the sum of the first offset and the third offset, where the third offset is an integer greater than 0. In this way, the comb teeth occupied by the first antenna port of the terminal device are determined based on the first offset, and the comb teeth occupied by the second antenna port of the terminal device are determined based on the second offset. As a result, the comb teeth occupied by the antenna ports of the terminal device vary randomly at different transmission times, and the intervals between multiple comb teeth occupied by the antenna ports of the same terminal device may also vary randomly. In this way, the antenna ports that cause interference to the antenna ports of the terminal device are random at different transmission times, and at the same transmission time, the antenna ports that cause interference to the antenna ports of the terminal device that occupy different comb teeth may not be the antenna ports of the same terminal device. This realizes frequency-domain interference randomization, further improving the degree of freedom of frequency-domain resources occupied by the antenna ports of the terminal device, and further improving the interference randomization effect.

[0025]

[0023] In a possible design manner, the third offset can be determined based on at least a cell identifier and a time-domain resource occupied by the second antenna port, or the third offset can be determined based on one or more of the following parameters: the number of slots included in each system frame, the number of OFDM symbols included in each slot, the number of comb teeth, and the comb tooth offset, which can further improve the flexibility of the frequency-domain resource occupied by the antenna port of the terminal device and further improve the interference randomization effect.

[0026] In a possible design manner, the third offset may be a third random number. In other words, the third offset may be a random number.

[0027] In a possible design, the third random number is:

[0028]

number

[0029]

[0026] In a possible design manner, determining the first offset based on the cyclic shift value occupied by the first antenna port may include: determining the first offset based on the range to which the cyclic shift value belongs.

[0030]

[0027] In this way, the comb teeth occupied by the antenna ports are obtained based on the first offset, and the value of the first offset is related to the cyclic shift value. In this case, the comb teeth occupied by the antenna ports are affected by the cyclic shift value and the first offset. As a result, the comb teeth occupied by each antenna port and the cyclic shift value change randomly at different transmission times, and the antenna ports that cause interference to the antenna ports of the terminal device also change randomly at different transmission times. At the same transmission time, different antenna ports cause interference to different antenna ports of the terminal device. Two-dimensional interference randomization in the code domain and the frequency domain can be realized, which can further improve the interference randomization effect and accelerate the interference randomization convergence speed.

[0031]

[0028] Also, due to the introduction of the cyclic shift value, the antenna port p aThe antenna port of the UE b The interference level of the interference caused to Θ can still vary greatly at different transmission times. In this way, a good interference randomization effect can be guaranteed.

[0032]

[0029] In a possible design scheme, the starting position of the frequency domain resources occupied by each of the M antenna ports may be determined based on at least a fourth offset, where the fourth offset is an integer greater than 0, and the fourth offset may be determined based on at least a cell identifier and an index of a frequency hopping period corresponding to the reference signal.

[0033]

[0030] In this way, when determining the starting position of the frequency domain resource occupied by the antenna port, a fourth offset is introduced, so that the starting position of the frequency domain resource occupied by each antenna port may change randomly at different frequency hopping periods, and the antenna port that causes interference to the antenna port of the terminal device also changes randomly, thereby realizing frequency domain interference randomization, which brings about a good interference randomization effect, can further accelerate the interference randomization convergence speed, and can further improve the channel estimation performance.

[0034] In a possible design manner, the fourth offset may be a fourth random number. In other words, the fourth offset can be a random number.

[0035] In a possible design, the fourth random number is:

[0036]

number

[0037]

number

[0038]

number

[0039]

number

[0040]

[0033] According to a second aspect, there is provided a communication method, comprising: receiving configuration information; and transmitting reference signals via M antenna ports based on the configuration information, where the configuration information indicates a configuration of the reference signals, M is an integer greater than 0, the M antenna ports include at least one first antenna port, and a comb tooth occupied by the first antenna port is determined based on at least a first offset, the first offset is an integer greater than 0, and the first offset is determined based on at least a cell identifier and a time domain resource occupied by the first antenna port; or the first offset is determined based on a cyclic shift value occupied by the first antenna port.

[0041] In a possible design manner, the first offset may be determined based on at least a cell identifier and a time domain resource occupied by the first antenna port; or the first offset may be determined based on one or more of the following parameters: a number of slots included in each system frame, a number of Orthogonal Frequency Division Multiplexing OFDM symbols included in each slot, a comb tooth number, and a comb tooth offset, where the comb tooth number is determined based on a transmission bandwidth m of the reference signal. SRS,bhop and the comb offset is the reference number of comb teeth occupied by the reference signal.

[0042]

[0035] In a possible design scheme, the time domain resource occupied by the first antenna port may include one or more OFDM symbols, and the one or more OFDM symbols included in the time domain resource occupied by the first antenna port are determined based on one or more of the following parameters: a system frame number corresponding to the first antenna port, a slot number corresponding to the first antenna port, and an OFDM symbol number corresponding to the first antenna port.

[0043] In a possible design scenario, the first offset may be a first random number.

[0044] In a possible design scheme, the first random number is:

[0045]

number

[0046]

[0038] In a possible design scheme, the M antenna ports may further include at least one second antenna port, and the comb teeth occupied by the second antenna port may be determined based on at least a second offset, where the second offset is an integer greater than 0, and the second offset is determined based on at least a cell identifier and a time domain resource occupied by the second antenna port, and the second offset is different from the first offset.

[0047] In a possible design manner, the second offset may be determined based on at least a cell identifier and a time domain resource occupied by the second antenna port; or the second offset may be determined based on one or more of the following parameters: a number of slots included in each system frame, a number of OFDM symbols included in each slot, a comb number, and a comb offset, where the comb number is determined based on a transmission bandwidth m of the reference signal. SRS,bhop and the comb offset is the reference number of comb teeth occupied by the reference signal.

[0048]

[0040] In a possible design scheme, the time domain resource occupied by the second antenna port may include one or more OFDM symbols, and the one or more OFDM symbols that may be included in the time domain resource occupied by the second antenna port may be determined based on one or more of the following parameters: a system frame number corresponding to the second antenna port, a slot number corresponding to the second antenna port, and an OFDM symbol number corresponding to the second antenna port.

[0049] In a possible design scenario, the second offset may be a second random number.

[0050] In a possible design, the second random number is:

[0051]

number

[0052] In a possible design scheme, the second offset may be the sum of the first offset and a third offset, where the third offset is an integer greater than zero.

[0053]

[0044] In a possible design manner, the third offset can be determined based on at least the cell identifier and the time domain resources occupied by the second antenna port, or the third offset can be determined based on one or more of the following parameters: the number of slots included in each system frame, the number of OFDM symbols included in each slot, the number of comb teeth, and the comb tooth offset.

[0054] In a possible design scenario, the third offset may be a third random number.

[0055] In a possible design, the third random number is:

[0056]

number

[0057]

[0047] In a possible design manner, determining the first offset based on the cyclic shift value occupied by the first antenna port may include: determining the first offset based on the range to which the cyclic shift value belongs.

[0058]

[0048] In a possible design scheme, the starting position of the frequency domain resources occupied by each of the M antenna ports may be determined based on at least a fourth offset, where the fourth offset is an integer greater than 0, and the fourth offset is determined based on at least a cell identifier and an index of the frequency hopping period corresponding to the reference signal.

[0059] In a possible design scenario, the fourth offset may be a fourth random number.

[0060] In a possible design, the fourth random number is:

[0061]

number

[0062]

number

[0063]

number

[0064]

number

[0065]

[0051] It should be noted that for the technical effects of the communication method according to the second aspect, please refer to the technical effects of the method according to any possible implementation of the first aspect, and the details will not be described again here.

[0066]

[0052] According to a third aspect, there is provided a communication method, comprising: transmitting configuration information; and receiving reference signals via M antenna ports based on the configuration information, where the configuration information indicates a configuration of the reference signals, and a starting position of a frequency domain resource occupied by each of the M antenna ports is determined based on at least a fourth offset, where the fourth offset is an integer greater than 0, and the fourth offset is determined based on at least a cell identifier and an index of a frequency hopping period corresponding to the reference signal.

[0067] In a possible design scenario, the fourth offset may be a fourth random number.

[0068] In a possible design, the fourth random number is:

[0069]

number

[0070]

number

[0071]

number

[0072]

number

[0073]

[0055] It should be noted that for the technical effects of the communication method according to the third aspect, please refer to the technical effects of the method according to any possible implementation of the first aspect, and the details will not be described again here.

[0074]

[0056] According to a fourth aspect, there is provided a communication method, comprising: receiving configuration information; and transmitting reference signals via M antenna ports based on the configuration information, where the configuration information indicates a configuration of the reference signals, and a starting position of a frequency domain resource occupied by each of the M antenna ports is determined based on at least a fourth offset, the fourth offset being an integer greater than 0, and the fourth offset is determined based on at least a cell identifier and an index of a frequency hopping period corresponding to the reference signal.

[0075] In a possible design scenario, the fourth offset may be a fourth random number.

[0076] In a possible design, the fourth random number is:

[0077]

number

[0078]

number

[0079]

number

[0080]

number

[0081]

[0059] It should be noted that for the technical effects of the communication method according to the fourth aspect, please refer to the technical effects of the method according to any possible implementation of the first aspect, and the details will not be described again here.

[0082] According to a fifth aspect, there is provided a communication device, the communication device including a transmitting module and a receiving module, The transmitting module is configured to transmit configuration information, where the configuration information indicates a configuration of the reference signal; and The receiving module is configured to receive a reference signal via M antenna ports based on the configuration information, where M is an integer greater than 0, the M antenna ports include at least one first antenna port, and a comb tooth occupied by the first antenna port is determined based on at least a first offset, the first offset being an integer greater than 0, and the first offset being determined based on at least a cell identifier and a time domain resource occupied by the first antenna port; or the first offset is determined based on a cyclic shift value occupied by the first antenna port.

[0083] In a possible design manner, the first offset is determined based on at least a cell identifier and a time domain resource occupied by the first antenna port; or the first offset can be determined based on one or more of the following parameters: the number of slots included in each system frame, the number of orthogonal frequency division multiplexing (OFDM) symbols included in each slot, the number of comb teeth, and the comb tooth offset, where the number of comb teeth is determined based on the transmission bandwidth m of the reference signal. SRS,bhop and the comb offset is the reference number of comb teeth occupied by the reference signal.

[0084]

[0062] In a possible design scheme, the time domain resource occupied by the first antenna port may include one or more OFDM symbols, and the one or more OFDM symbols included in the time domain resource occupied by the first antenna port are determined based on one or more of the following parameters: a system frame number corresponding to the first antenna port, a slot number corresponding to the first antenna port, and an OFDM symbol number corresponding to the first antenna port.

[0085] In a possible design scenario, the first offset may be a first random number.

[0086] In a possible design, the first random number is:

[0087]

number

[0088]

[0065] In a possible design scheme, the M antenna ports may further include at least one second antenna port, and the comb teeth occupied by the second antenna port may be determined based on at least a second offset, where the second offset is an integer greater than 0, and the second offset may be determined based on at least a cell identifier and a time domain resource occupied by the second antenna port, and the second offset is different from the first offset.

[0089] In a possible design manner, the second offset may be determined based on at least a cell identifier and a time domain resource occupied by the second antenna port; or the second offset may be determined based on one or more of the following parameters: a number of slots included in each system frame, a number of OFDM symbols included in each slot, a comb number, and a comb offset, where the comb number is determined based on a transmission bandwidth m of the reference signal. SRS,bhop and the comb offset is the reference number of comb teeth occupied by the reference signal.

[0090]

[0067] In a possible design scheme, the time domain resource occupied by the second antenna port may include one or more OFDM symbols, and the one or more OFDM symbols that may be included in the time domain resource occupied by the second antenna port may be determined based on one or more of the following parameters: a system frame number corresponding to the second antenna port, a slot number corresponding to the second antenna port, and an OFDM symbol number corresponding to the second antenna port.

[0091] In a possible design scenario, the second offset may be a second random number.

[0092] In a possible design, the second random number is:

[0093]

number

[0094] In a possible design manner, the second offset may be the sum of the first offset and the third offset, where the third offset is an integer greater than zero.

[0095]

[0071] In a possible design manner, the third offset can be determined based on at least the cell identifier and the time domain resources occupied by the second antenna port, or the third offset can be determined based on one or more of the following parameters: the number of slots included in each system frame, the number of OFDM symbols included in each slot, the number of comb teeth, and the comb tooth offset.

[0096] In a possible design scenario, the third offset may be a third random number.

[0097] In a possible design, the third random number is:

[0098]

number

[0099]

[0074] In a possible design manner, determining the first offset based on the cyclic shift value occupied by the first antenna port may include: determining the first offset based on the range to which the cyclic shift value belongs.

[0100]

[0075] In a possible design scheme, the starting position of the frequency domain resources occupied by each of the M antenna ports may be determined based on at least a fourth offset, where the fourth offset is an integer greater than 0, and the fourth offset may be determined based on at least a cell identifier and an index of a frequency hopping period corresponding to the reference signal.

[0101] In a possible design scenario, the fourth offset may be a fourth random number.

[0102] In a possible design, the fourth random number is:

[0103]

number

[0104]

number

[0105]

number

[0106]

number

[0107]

[0078] It should be noted that the receiving module and the transmitting module may be arranged separately or may be integrated into one module, i.e., a transceiver module. The specific implementation of the receiving module and the transmitting module is not particularly limited in this application.

[0108]

[0079] Optionally, the communication device according to the fifth aspect may further include a processing module and a storage module. The storage module stores programs or instructions. When the processing module executes the programs or instructions, the communication device according to the fifth aspect is enabled to perform the method according to the first aspect.

[0109]

[0080] It should be noted that the communication device according to the fifth aspect may be a network device, or may be a chip (system) or another part or component that can be disposed in a network device, which is not particularly limited in the present application.

[0110]

[0081] Note that, for the technical effects of the communication device according to the fifth aspect, please refer to the technical effects of the method according to any possible implementation of the first aspect, and the details will not be described again here.

[0111] According to a sixth aspect, there is provided a communication device, the communication device including a transmitting module and a receiving module, The receiving module is configured to receive configuration information, where the configuration information indicates a configuration of the reference signal; and The transmitting module is configured to transmit the reference signal via M antenna ports based on the configuration information, where M is an integer greater than 0, the M antenna ports include at least one first antenna port, and a comb tooth occupied by the first antenna port is determined based on at least a first offset, the first offset being an integer greater than 0, and the first offset being determined based on at least a cell identifier and a time domain resource occupied by the first antenna port; or the first offset is determined based on a cyclic shift value occupied by the first antenna port.

[0112] In a possible design manner, the first offset may be determined based on at least a cell identifier and a time domain resource occupied by the first antenna port; or the first offset may be determined based on one or more of the following parameters: a number of slots included in each system frame, a number of Orthogonal Frequency Division Multiplexing OFDM symbols included in each slot, a comb tooth number, and a comb tooth offset, where the comb tooth number is determined based on a transmission bandwidth m of the reference signal. SRS,bhop and the comb offset is the reference number of comb teeth occupied by the reference signal.

[0113]

[0084] In a possible design scheme, the time domain resource occupied by the first antenna port may include one or more OFDM symbols, and the one or more OFDM symbols included in the time domain resource occupied by the first antenna port are determined based on one or more of the following parameters: a system frame number corresponding to the first antenna port, a slot number corresponding to the first antenna port, and an OFDM symbol number corresponding to the first antenna port.

[0114] In a possible design scenario, the first offset may be a first random number.

[0115] In a possible design scheme, the first random number is:

[0116]

number

[0117]

[0087] In a possible design scheme, the M antenna ports may further include at least one second antenna port, and the comb teeth occupied by the second antenna port may be determined based on at least a second offset, where the second offset is an integer greater than 0, and the second offset is determined based on at least a cell identifier and a time domain resource occupied by the second antenna port, and the second offset is different from the first offset.

[0118] In a possible design manner, the second offset may be determined based on at least a cell identifier and a time domain resource occupied by the second antenna port; or the second offset may be determined based on one or more of the following parameters: a number of slots included in each system frame, a number of OFDM symbols included in each slot, a comb number, and a comb offset, where the comb number is determined based on a transmission bandwidth m of the reference signal. SRS,bhop and the comb offset is the reference number of comb teeth occupied by the reference signal.

[0119]

[0089] In a possible design scheme, the time domain resource occupied by the second antenna port may include one or more OFDM symbols, and the one or more OFDM symbols that may be included in the time domain resource occupied by the second antenna port may be determined based on one or more of the following parameters: a system frame number corresponding to the second antenna port, a slot number corresponding to the second antenna port, and an OFDM symbol number corresponding to the second antenna port.

[0120] In a possible design scenario, the second offset may be a second random number.

[0121] In a possible design, the second random number is:

[0122]

number

[0123] In a possible design manner, the second offset may be the sum of the first offset and the third offset, where the third offset is an integer greater than zero.

[0124]

[0093] In a possible design manner, the third offset can be determined based on at least the cell identifier and the time domain resources occupied by the second antenna port, or the third offset can be determined based on one or more of the following parameters: the number of slots included in each system frame, the number of OFDM symbols included in each slot, the number of comb teeth, and the comb tooth offset.

[0125] In a possible design scenario, the third offset may be a third random number.

[0126] In a possible design, the third random number is:

[0127]

number

[0128]

[0096] In a possible design manner, determining the first offset based on the cyclic shift value occupied by the first antenna port may include: determining the first offset based on the range to which the cyclic shift value belongs.

[0129]

[0097] In a possible design scheme, the starting position of the frequency domain resources occupied by each of the M antenna ports may be determined based on at least a fourth offset, where the fourth offset is an integer greater than 0, and the fourth offset is determined based on at least a cell identifier and an index of a frequency hopping period corresponding to the reference signal.

[0130] In a possible design scenario, the fourth offset may be a fourth random number.

[0131] In a possible design, the fourth random number is:

[0132]

number

[0133]

number

[0134]

number

[0135]

number

[0136]

[0100] It should be noted that the receiving module and the transmitting module may be arranged separately or may be integrated into one module, i.e., a transceiver module. The specific implementation of the receiving module and the transmitting module is not particularly limited in this application.

[0137]

[0101] Optionally, the communication device according to the sixth aspect may further include a processing module and a storage module. The storage module stores a program or instruction. When the processing module executes the program or instruction, the communication device according to the sixth aspect is enabled to perform the method according to the second aspect.

[0138]

[0102] It should be noted that the communication device according to the sixth aspect may be a terminal device, or may be a chip (system) or another part or component that can be disposed in a terminal device, which is not particularly limited in the present application.

[0139]

[0103] It should be noted that for the technical effects of the communication device according to the sixth aspect, please refer to the technical effects of the method according to any possible implementation of the second aspect, and the details will not be described again here.

[0140]

[0104] According to a seventh aspect, there is provided a communication device, the communication device including a transmitting module and a receiving module, The transmitting module is configured to transmit configuration information, where the configuration information indicates a configuration of the reference signal; and The receiving module is configured to receive a reference signal via the M antenna ports based on the configuration information, wherein a starting position of a frequency domain resource occupied by each of the M antenna ports is determined based on at least a fourth offset, the fourth offset being an integer greater than 0, and the fourth offset is determined based on at least a cell identifier and an index of a frequency hopping period corresponding to the reference signal.

[0141] In a possible design scenario, the fourth offset may be a fourth random number.

[0142] In a possible design, the fourth random number is:

[0143]

number

[0144]

number

[0145]

number

[0146]

number

[0147]

[0107] It should be noted that the receiving module and the transmitting module may be arranged separately or may be integrated into one module, i.e., a transceiver module. The specific implementation of the receiving module and the transmitting module is not particularly limited in this application.

[0148]

[0108] Optionally, the communication device according to the seventh aspect may further comprise a processing module and a storage module. The storage module stores programs or instructions. When the processing module executes the programs or instructions, the communication device according to the seventh aspect is enabled to perform the method according to the first aspect.

[0149]

[0109] It should be noted that the communication device according to the seventh aspect may be a network device, or may be a chip (system) or another part or component that can be disposed in a network device, which is not particularly limited in the present application.

[0150]

[0110] It should be noted that for the technical effects of the communication device according to the seventh aspect, please refer to the technical effects of the method according to any possible implementation of the third aspect, and the details will not be described again here.

[0151]

[0111] According to an eighth aspect, there is provided a communication device, the communication device including a transmitting module and a receiving module, The receiving module is configured to receive configuration information, where the configuration information indicates a configuration of the reference signal; and The transmitting module is configured to transmit a reference signal via the M antenna ports based on the configuration information, wherein a starting position of a frequency domain resource occupied by each of the M antenna ports is determined based on at least a fourth offset, the fourth offset being an integer greater than 0, and the fourth offset is determined based on at least a cell identifier and an index of a frequency hopping period corresponding to the reference signal.

[0152] In a possible design scenario, the fourth offset may be a fourth random number.

[0153] In a possible design, the fourth random number is:

[0154]

number

[0155]

number

[0156]

number

[0157]

number

[0158]

[0114] It should be noted that the receiving module and the transmitting module may be arranged separately or may be integrated into one module, i.e., a transceiver module. The specific implementation of the receiving module and the transmitting module is not particularly limited in this application.

[0159]

[0115] Optionally, the communication device according to the eighth aspect may further include a processing module and a storage module. The storage module stores a program or instruction. When the processing module executes the program or instruction, the communication device according to the eighth aspect is capable of performing the method according to the fourth aspect.

[0160]

[0116] It should be noted that the communication device according to the eighth aspect may be a terminal device, or may be a chip (system) or another part or component that can be disposed in a terminal device, which is not particularly limited in the present application.

[0161]

[0117] It should be noted that for the technical effects of the communication device according to the eighth aspect, please refer to the technical effects of the method according to any possible implementation of the fourth aspect, and the details will not be described again here.

[0162] According to a ninth aspect, there is provided a communication method, the method including: transmitting configuration information of a reference signal; and receiving the reference signal via M antenna ports based on the configuration information, where M is an integer greater than 0, the M antenna ports including at least one first antenna port, wherein comb teeth occupied by the first antenna port are determined based on at least a first offset, and the first offset is determined based on at least a time domain resource occupied by the first antenna port and / or a frequency domain resource occupied by the first antenna port.

[0163] According to a tenth aspect, there is provided a communication method, the method including: receiving configuration information for a reference signal; and transmitting the reference signal via M antenna ports based on the configuration information, where M is an integer greater than 0, the M antenna ports including at least one first antenna port, and comb teeth occupied by the first antenna port are determined based on at least a first offset, and the first offset is determined based on at least a time domain resource occupied by the first antenna port and / or a frequency domain resource occupied by the first antenna port.

[0164]

[0120] According to the method provided in the ninth or tenth aspect, the comb teeth occupied by the first antenna port of the terminal device are determined based on the first offset, so that the comb teeth occupied by the antenna port of the terminal device may vary randomly at different transmission times and / or different frequency domain resources. In this way, the antenna port of the terminal device that causes interference to the antenna port of the terminal device varies randomly. Therefore, interference randomization is realized, and a better interference randomization effect can be achieved.

[0165]

[0121] Optionally, determining the comb teeth occupied by the first antenna port based on at least a first offset may include: the comb teeth occupied by the first antenna port may be determined based on an initial value of the comb teeth occupied by the first antenna port and the first offset.

[0166] Optionally, the first offset is an integer greater than zero.

[0167]

[0123] Optionally, the initial value of the comb teeth occupied by the first antenna port is configured by using higher layer signaling RRC.

[0168] In a possible design scenario, the first offset includes the first random number and / or the fifth random number; the first random number is determined based on at least a time domain resource occupied by the first antenna port; The fifth random number is determined based on at least a frequency domain resource occupied by the first antenna port.

[0169]

[0125] In a possible design manner, the first random number is determined based on at least a time domain resource occupied by the first antenna port: The method further includes: determining a first random number based on one of a plurality of first correspondences and a time-domain resource occupied by the first antenna port, and the first correspondences include a correspondence between at least one first random number and at least one time-domain resource. Optionally, the first random number may be replaced by a first variable.

[0170]

[0126] In a possible design manner, each of the multiple first correspondences includes multiple first variables, the values ​​of the multiple first variables are different from each other, the values ​​of the first variables included in the multiple first correspondences are the same, and the correspondences between the multiple first variables and the multiple time domain resources are different.

[0171]

[0127] In a possible design manner, one frequency hopping period includes at least one reference signal transmission, and the correspondence relationship between the at least one first random number and the at least one time domain resource is: The method includes a correspondence between the at least one first random number and a relative number of the at least one reference signal transmission in a frequency hopping period.

[0172]

[0128] In a possible design manner, the correspondence between the at least one first random number and the at least one time domain resource is: The method includes a correspondence between the at least one first random number and an index of the at least one frequency hopping period.

[0173] In a possible design scheme, the first random number is determined based on at least a time domain resource occupied by the first antenna port: The first random number is determined based on a time domain resource occupied by the first antenna port and the pseudo-random sequence.

[0174] In a possible design scheme, the first random number is determined by the following parameters: The number of slots included in each system frame, The number of OFDM symbols contained in each slot, Number of teeth, and Comb tooth offset The comb tooth number is the number of comb teeth included in the transmission bandwidth of the reference signal, and the comb tooth offset is the reference number of comb teeth occupied by the reference signal.

[0175] In a possible design, the first random number is:

[0176]

number

[0177]

[0131] In a possible design manner, the fifth random number is determined based on at least a frequency domain resource occupied by the first antenna port: The fifth random number is determined based on one of the plurality of second correspondence relationships and the frequency domain resource occupied by the first antenna port, and the second correspondence relationship includes a correspondence relationship between the at least one fifth random number and the at least one frequency domain resource. Optionally, the fifth random number may be replaced with a fifth variable.

[0178]

[0132] In a possible design scheme, each of the multiple second correspondences includes multiple fifth variables, the values ​​of the multiple fifth variables are different from each other, the values ​​of the fifth variables included in the multiple first correspondences are the same, and the correspondences between the multiple fifth variables and the multiple time domain resources are different.

[0179] In a possible design manner, the fifth random number is determined based on at least a frequency domain resource occupied by the first antenna port: A fifth random number is determined based on the frequency domain resource occupied by the first antenna port and the pseudo-random sequence.

[0180] In a possible design, the fifth random number is:

[0181]

number

[0182]

[0135] In a possible design manner, the time domain resource occupied by the first antenna port includes one or more Orthogonal Frequency Division Multiplexing OFDM symbols, and the one or more OFDM symbols included in the time domain resource occupied by the first antenna port have the following parameters: The system frame number corresponding to the first antenna port, The slot number corresponding to the first antenna port, and OFDM symbol number corresponding to the first antenna port The determination is based on one or more of the following:

[0183]

[0136] In a possible design manner, the index of a frequency hopping period in which a time domain resource is located is determined based on the time domain resource occupied by the first antenna port; or the relative index of the time domain resource in one corresponding frequency hopping period is determined based on the time domain resource occupied by the first antenna port, where the relative index is: The relative index of the kth transmission in one frequency hopping period is k-1. It may be defined accordingly.

[0184]

[0137] In a possible design manner, the frequency domain resource occupied by the first antenna port includes one or more sub-bandwidths, and the one or more sub-bandwidths included in the frequency domain resource occupied by the first antenna port are determined by the following parameters: the index of the frequency hopping bandwidth corresponding to the first antenna port, and The transmission bandwidth index corresponding to the first antenna port The determination is based on one or more of the following:

[0185]

[0138] In a possible design manner, an index of a frequency hopping bandwidth in which a frequency domain resource is located is determined based on the frequency domain resource occupied by the first antenna port, or an index of one subband corresponding to the frequency domain resource is determined based on the frequency domain resource occupied by the first antenna port, where the subband index may be defined as follows: The sounding bandwidth of the first antenna port corresponds to a*b RBs and may be divided into subbands, where the subband granularity is b, and the subbands are numbered in ascending frequency order, including {0,...,a-1}.

[0186]

[0139] In a possible design scheme, the M antenna ports further include at least one second antenna port, and the comb teeth occupied by the second antenna port are determined based on at least a second offset, and the second offset is determined based on at least the time domain resources occupied by the second antenna port and / or the frequency domain resources occupied by the second antenna port, and the second offset is different from the first offset.

[0187] Optionally, the second offset is an integer greater than zero.

[0188]

[0141] Optionally, the initial values ​​of the comb teeth of the first antenna port and the second antenna port are different.

[0189]

[0142] Optionally, determining the comb teeth occupied by the second antenna port based on at least the second offset may include: the comb teeth occupied by the second antenna port may be determined based on an initial value of the comb teeth occupied by the second antenna port and the second offset.

[0190]

[0143] Optionally, the initial value of the comb teeth occupied by the second antenna port is configured by using higher layer signaling RRC.

[0191] In a possible design scenario, the second offset includes a second random number and / or a sixth random number; the second random number is determined based on at least a time domain resource occupied by the second antenna port; The sixth random number is determined based on at least a frequency domain resource occupied by the second antenna port.

[0192] In a possible design manner, the second random number is determined based on at least a time domain resource occupied by the second antenna port: The second random number is determined based on one of a plurality of third correspondence relationships and a time domain resource occupied by the second antenna port, and the third correspondence relationship includes a correspondence relationship between at least one second random number and at least one time domain resource.

[0193]

[0146] In a possible design manner, one frequency hopping period includes at least one transmission of a reference signal, and the correspondence relationship between the at least one second random number and the at least one time domain resource is: The method includes a correspondence between the at least one second random number and a relative number of the at least one reference signal transmission in a frequency hopping period.

[0194]

[0147] In a possible design manner, the correspondence between the at least one second random number and the at least one time domain resource is: The method includes a correspondence between the at least one second random number and an index of the at least one frequency hopping period.

[0195] In a possible design manner, the second random number is determined based on at least a time domain resource occupied by the second antenna port: The second random number is determined based on the time domain resource occupied by the second antenna port and the pseudo-random sequence.

[0196] In a possible design scheme, the second random number may be determined by the following parameters: The number of slots included in each system frame, The number of OFDM symbols contained in each slot, Number of teeth, and Comb tooth offset The comb tooth number is the number of comb teeth included in the transmission bandwidth of the reference signal, and the comb tooth offset is a reference number of comb teeth occupied by the reference signal.

[0197] In a possible design, the second random number is:

[0198]

number

[0199]

[0151] In a possible design manner, the sixth random number is determined based on at least a frequency domain resource occupied by the second antenna port: The method includes: determining a sixth random number based on one of the plurality of fourth correspondence relationships and the frequency domain resource occupied by the second antenna port; and the fourth correspondence relationship including a correspondence relationship between at least one sixth random number and at least one frequency domain resource.

[0200]

[0152] In a possible design manner, the sixth random number is determined based on at least a frequency domain resource occupied by the second antenna port: A sixth random number is determined based on the frequency domain resource occupied by the second antenna port and the pseudo-random sequence.

[0201] In one possible design, the sixth random number is:

[0202]

number

[0203] In a possible design scheme, the second offset is determined based on the first offset and the third offset.

[0204]

[0155] In a possible design scheme, the second offset is the sum of the first offset and the third offset, and the third offset is an integer greater than zero.

[0205]

[0156] In a possible design scheme, the third offset is a preset constant.

[0206]

[0157] In a possible design manner, the third offset is determined based on at least the time domain resources occupied by the second antenna port and / or the frequency domain resources occupied by the second antenna port.

[0207] In a possible design scenario, the third offset includes a third random number and / or a seventh random number; the third random number is determined based on at least a time domain resource occupied by the second antenna port; The seventh random number is determined based on at least the frequency domain resource occupied by the second antenna port.

[0208]

[0159] In a possible design manner, the third random number is determined based on at least a time domain resource occupied by the second antenna port: The method includes: determining a third random number based on one of a plurality of fifth correspondence relationships and a time domain resource occupied by the second antenna port; and the fifth correspondence relationship including a correspondence relationship between at least one third random number and at least one time domain resource.

[0209]

[0160] In a possible design scheme, each of the multiple fifth correspondences includes multiple third variables, the values ​​of the multiple third variables are different from each other, the values ​​of the third variables included in the multiple fifth correspondences are the same, and the correspondences between the multiple third variables and the multiple time domain resources are different.

[0210]

[0161] In a possible design manner, one frequency hopping period includes at least one reference signal transmission, and the correspondence relationship between the at least one third random number and the at least one time domain resource is: The method includes a correspondence between the at least one third random number and a relative number of the at least one reference signal transmission in a frequency hopping period.

[0211]

[0162] In a possible design manner, the correspondence between the at least one third random number and the at least one time domain resource is: The method includes a correspondence between the at least one third random number and an index of the at least one frequency hopping period.

[0212]

[0163] In a possible design manner, the third random number is determined based on at least a time domain resource occupied by the second antenna port: The third random number is determined based on the time domain resource occupied by the second antenna port and the pseudo-random sequence.

[0213] In a possible design scheme, the third random number is determined by the following parameters: The number of slots included in each system frame, The number of OFDM symbols contained in each slot, Number of teeth, and Comb tooth offset The comb tooth number is the number of comb teeth included in the transmission bandwidth of the reference signal, and the comb tooth offset is a reference number of comb teeth occupied by the reference signal.

[0214] In a possible design, the third random number is:

[0215]

number

[0216]

[0166] In a possible design manner, the seventh random number is determined based on at least a frequency domain resource occupied by the second antenna port: The method includes: determining a seventh random number based on one of a plurality of sixth correspondence relationships and a frequency domain resource occupied by the second antenna port; and the sixth correspondence relationship including a correspondence relationship between at least one seventh random number and at least one frequency domain resource.

[0217]

[0167] In a possible design manner, the seventh random number is determined based on at least a frequency domain resource occupied by the second antenna port: The seventh random number is determined based on the frequency domain resource occupied by the second antenna port and the pseudo-random sequence.

[0218] In one possible design, the seventh random number is:

[0219]

number

[0220]

[0169] In a possible design manner, the time domain resource occupied by the second antenna port includes one or more OFDM symbols, and the one or more OFDM symbols included in the time domain resource occupied by the second antenna port have the following parameters: The system frame number corresponding to the second antenna port, The slot number corresponding to the second antenna port, and OFDM symbol number corresponding to the second antenna port The determination is based on one or more of the following:

[0221]

[0170] In a possible design manner, the frequency domain resource occupied by the second antenna port includes one or more sub-bandwidths, and the one or more sub-bandwidths included in the frequency domain resource occupied by the second antenna port are determined by the following parameters: the index of the frequency hopping bandwidth corresponding to the second antenna port, and The transmission bandwidth index corresponding to the second antenna port The determination is based on one or more of the following:

[0222]

[0171] According to an eleventh aspect, there is provided a communication method, the communication method including: transmitting configuration information of a reference signal; and receiving the reference signal via M antenna ports based on the configuration information, where M is an integer greater than 0, and the M antenna ports include at least one first antenna port, wherein a start position of a frequency domain resource occupied by the first antenna port is determined based on at least a fourth offset, the fourth offset being determined based on at least a time domain resource occupied by the first antenna port and a pseudo-random sequence; or wherein the fourth offset is determined based on one of a plurality of ninth correspondences and the time domain resource occupied by the first antenna port, the ninth correspondence including a correspondence between the at least one fourth offset and the at least one time domain resource, and the plurality of ninth correspondences corresponding to the same frequency scaling factor.

[0223]

[0172] According to a twelfth aspect, there is provided a communication method, the communication method including: receiving configuration information for a reference signal; and transmitting the reference signal via M antenna ports based on the configuration information, where M is an integer greater than 0, and the M antenna ports include at least one first antenna port, wherein a start position of a frequency domain resource occupied by the first antenna port is determined based on at least a fourth offset, the fourth offset being determined based on at least a time domain resource occupied by the first antenna port and a pseudo-random sequence; or wherein the fourth offset is determined based on one of a plurality of ninth correspondences and the time domain resource occupied by the first antenna port, the ninth correspondence including a correspondence between the at least one fourth offset and the at least one time domain resource, and the plurality of ninth correspondences corresponding to the same frequency scaling factor.

[0224]

[0173] According to the communication method provided in the eleventh or twelfth aspect, when determining the starting positions of the frequency domain resources occupied by the antenna ports, a fourth offset is introduced, so that the starting positions of the frequency domain resources occupied by each antenna port may vary randomly on different time domain resources, and the antenna ports that cause interference to the antenna ports of the terminal device also vary randomly, thereby achieving frequency domain interference randomization, which brings about a good interference randomization effect, can accelerate the interference randomization convergence speed, and can improve channel estimation performance.

[0225]

[0175] Optionally, the initial value of the starting position of the frequency domain resource occupied by the first antenna port is configured by using higher layer signaling RRC.

[0226]

[0176] In a possible design scenario, the fourth offset is a fourth random number.

[0227] In a possible design, the fourth random number is:

[0228]

number

[0229]

number

[0230]

number

[0231]

number

[0232] According to a thirteenth aspect, there is provided a communication method, the method comprising: transmitting configuration information of a reference signal; and receiving the reference signal via M antenna ports based on the configuration information, where M is an integer greater than 0, and the M antenna ports include at least one first antenna port, a cyclic shift value of the first antenna port is determined based on at least a first code domain offset, and the first code domain offset is determined based on at least a time domain resource occupied by the first antenna port and / or a frequency domain resource occupied by the first antenna port.

[0233] According to a fourteenth aspect, there is provided a communication method, the method comprising: receiving configuration information for a reference signal; and transmitting the reference signal via M antenna ports based on the configuration information, where M is an integer greater than 0, and the M antenna ports include at least one first antenna port, a cyclic shift value of the first antenna port being determined based on at least a first code domain offset, and the first code domain offset being determined based on at least a time domain resource occupied by the first antenna port and / or a frequency domain resource occupied by the first antenna port.

[0234]

[0180] According to the communication method provided in the thirteenth or fourteenth aspect, the cyclic shift value of the first antenna port of the terminal device is determined based on the first code domain offset, so that the cyclic shift value of the antenna port of the terminal device may randomly change at different transmission times and / or different frequency domain resources. In this way, the antenna port of the terminal device that causes interference to the antenna port of the terminal device changes randomly. Therefore, interference randomization is realized, and a better interference randomization effect can be achieved.

[0235]

[0181] Optionally, determining the cyclic shift value of the first antenna port based on at least the first code domain offset may include: determining the cyclic shift value of the first antenna port based on an initial value of the cyclic shift value of the first antenna port and the first code domain offset.

[0236]

[0182] Optionally, the initial value of the cyclic shift value of the first antenna port is configured by using higher layer signaling RRC.

[0237] In one possible design, the first code domain offset includes a first code domain random number and / or a second code domain random number; the first code domain random number is determined based on at least a time domain resource occupied by the first antenna port; The second code-domain random number is determined based on at least a frequency-domain resource occupied by the first antenna port.

[0238]

[0184] In a possible design manner, the first code domain random number is determined based on at least a time domain resource occupied by the first antenna port: The first code domain random number is determined based on one of a plurality of seventh correspondence relationships and a time domain resource occupied by the first antenna port, and the seventh correspondence relationship includes a correspondence relationship between at least one first code domain random number and at least one time domain resource.

[0239]

[0185] In a possible design manner, each of the multiple seventh correspondences includes multiple first code domain random numbers, the values ​​of the multiple first code domain random numbers are different from each other, the values ​​of the first code domain random numbers included in the multiple first correspondences are the same, and the correspondences between the multiple first code domain random numbers and the multiple time domain resources are different.

[0240]

[0186] In a possible design manner, one frequency hopping period includes at least one reference signal transmission, and the correspondence relationship between at least one first code domain random number and at least one time domain resource is: The method includes a correspondence between at least one first code domain random number and a relative number of at least one reference signal transmission in a frequency hopping period.

[0241]

[0187] In a possible design manner, the correspondence between the at least one first code domain random number and the at least one time domain resource is: The method includes a correspondence between at least one first code domain random number and an index of at least one frequency hopping period.

[0242]

[0188] In a possible design manner, the first code domain random number is determined based on at least a time domain resource occupied by the first antenna port, wherein: The first code domain random number is determined based on a time domain resource occupied by the first antenna port and the pseudo-random sequence.

[0243] In one possible design scheme, the first code domain random number may be generated based on the following parameters: The number of slots included in each system frame, The number of OFDM symbols contained in each slot, Number of teeth, and Comb tooth offset The comb tooth number is the number of comb teeth included in the transmission bandwidth of the reference signal, and the comb tooth offset is the reference number of comb teeth occupied by the reference signal.

[0244] In one possible design, the first code domain random number is:

[0245]

number

[0246]

[0191] In a possible design manner, the second code-domain random number is determined based on at least a frequency-domain resource occupied by the first antenna port: The second code domain random number is determined based on one of a plurality of eighth correspondence relationships and a frequency domain resource occupied by the first antenna port, and the eighth correspondence relationship includes a correspondence relationship between at least one second code domain random number and at least one frequency domain resource.

[0247]

[0192] In a possible design manner, the second code-domain random number is determined based on at least a frequency-domain resource occupied by the first antenna port: The second code domain random number is determined based on the frequency domain resource occupied by the first antenna port and the pseudo-random sequence.

[0248] In one possible design, the second code domain random number is:

[0249]

number

[0250]

[0194] In a possible design scheme, the M reference signal ports include a plurality of first reference signal ports, and in the time domain resource and / or the frequency domain resource, the plurality of first reference signal ports correspond to the same first code domain offset.

[0251] In a possible design scheme, the cyclic shift value satisfies α∈{0, 1,..., K×Y-1}, where Y is the maximum number n of antenna ports that are multiplexed via cyclic shifts in one comb. CS,max SRS , or, the number of cyclic shift values ​​that can be set by using upper layer parameters in one comb tooth, Y is determined based on the set number of comb teeth of the reference signal, and K is an integer greater than 1.

[0252] Alternatively, the cyclic shift values ​​satisfy α∈{0,1,...,Y-1}, where Y is the number of Fourier transform points M, M=2. x where x is a positive integer, and the value of M is determined based on the system bandwidth or the sounding bandwidth of the reference signal.

[0253] Alternatively, the cyclic shift values ​​satisfy α∈{0,1,...,Y-1}, where Y is the number of subcarriers occupied by the first antenna port on one OFDM symbol.

[0254]

[0196] In a possible design manner, the time domain resource occupied by the first antenna port includes one or more Orthogonal Frequency Division Multiplexing OFDM symbols, and the one or more OFDM symbols included in the time domain resource occupied by the first antenna port have the following parameters: The system frame number corresponding to the first antenna port, The slot number corresponding to the first antenna port, and OFDM symbol number corresponding to the first antenna port The determination is based on one or more of the following:

[0255]

[0197] In a possible design manner, the frequency domain resource occupied by the first antenna port includes one or more sub-bandwidths, and the one or more sub-bandwidths included in the frequency domain resource occupied by the first antenna port are determined by the following parameters: the index of the frequency hopping bandwidth corresponding to the first antenna port, and The transmission bandwidth index corresponding to the first antenna port The determination is based on one or more of the following:

[0256]

[0198] In a possible design manner, the M antenna ports further include at least one second antenna port, and the cyclic shift value of the second antenna port is determined based on at least a second code domain offset, and the second code domain offset is determined based on at least a time domain resource occupied by the second antenna port and / or a frequency domain resource occupied by the second antenna port, and the second code domain offset is different from the first code domain offset.

[0257]

[0199] The initial cyclic shift values ​​of the first antenna port and the second antenna port are set to be the same, and the first code domain offset of the first antenna port is different from the second code domain offset of the second antenna port in at least one time domain resource and / or frequency domain resource. For example, the intervals between the cyclic shift values ​​of the first antenna port and the second antenna port are different in the first time domain resource and the second time domain resource. Alternatively, the intervals between the cyclic shift values ​​of the first antenna port and the second antenna port are different in the first frequency domain resource and the second frequency domain resource.

[0258]

[0200] In a possible design manner, the second code domain offset includes a third code domain random number and / or a fourth code domain random number, wherein the third code domain random number is determined based at least on the time domain resources occupied by the second antenna port, and the fourth code domain random number is determined based at least on the frequency domain resources occupied by the second antenna port.

[0259]

[0201] In a possible design manner, the third code domain random number is determined based on at least the time domain resource occupied by the second antenna port: the third code domain random number is determined based on one of a plurality of 17th correspondence relationships and the time domain resource occupied by the second antenna port, and one 17th correspondence relationship includes a correspondence relationship between at least one third code domain random number and at least one time domain resource.

[0260]

[0202] In a possible design manner, one frequency hopping period includes at least one reference signal transmission, and the correspondence relationship between the at least one third random number and the at least one time domain resource is: The method includes a correspondence between the at least one third random number and a relative number of the at least one reference signal transmission in a frequency hopping period.

[0261]

[0203] In a possible design manner, the correspondence between the at least one third code domain random number and the at least one time domain resource is: The code domain random number includes a correspondence between at least one third code domain random number and an index of at least one frequency hopping period.

[0262]

[0204] In a possible design manner, the third code domain random number is determined based on at least the time domain resource occupied by the second antenna port: A third code domain random number is determined based on the time domain resource occupied by the second antenna port and the pseudo-random sequence.

[0263] In one possible design, the third code domain random number may be generated using the following parameters: The number of slots included in each system frame, The number of OFDM symbols contained in each slot, Number of teeth, and Comb tooth offset The comb tooth number is the number of comb teeth included in the transmission bandwidth of the reference signal, and the comb tooth offset is a reference number of comb teeth occupied by the reference signal.

[0264]

[0206] In a possible design manner, the fourth code domain random number is determined based on at least the frequency domain resource occupied by the second antenna port: The fourth code domain random number is determined based on one of the plurality of eighteenth correspondence relationships and the frequency domain resource occupied by the second antenna port, and the one eighteenth correspondence relationship includes a correspondence relationship between at least one sixth random number and at least one frequency domain resource.

[0265]

[0207] In a possible design manner, the fourth code domain random number is determined based on at least a frequency domain resource occupied by the second antenna port: A fourth code domain random number is determined based on the frequency domain resource occupied by the second antenna port and the pseudo-random sequence.

[0266]

[0208] According to a fifteenth aspect, there is provided a communication device, the communication device including a transmitting module and a receiving module, The transmitting module is configured to transmit configuration information of the reference signal; and The receiving module is configured to receive a reference signal via M antenna ports based on the configuration information, where M is an integer greater than 0, and the M antenna ports include at least one first antenna port, and the comb teeth occupied by the first antenna port are determined based on at least a first offset, and the first offset is determined based on at least a time domain resource occupied by the first antenna port and / or a frequency domain resource occupied by the first antenna port.

[0267]

[0209] It should be noted that all relevant contents of steps in any possible implementation of the ninth aspect can be cited in the functional description of the corresponding functional module, and the details will not be described again here.

[0268]

[0210] It should be noted that the receiving module and the transmitting module may be arranged separately or may be integrated into one module, i.e., a transceiver module. The specific implementation of the receiving module and the transmitting module is not particularly limited in this application.

[0269]

[0211] Optionally, the communication device according to the fifteenth aspect may further include a processing module and a storage module. The storage module stores a program or instruction. When the processing module executes the program or instruction, the communication device according to the fifteenth aspect is capable of performing a method according to any possible implementation of the ninth aspect.

[0270]

[0212] It should be noted that the communication device according to the fifteenth aspect may be a network device, or may be a chip (system) or another part or component that can be disposed in a network device, which is not particularly limited in the present application.

[0271]

[0213] Note that, for the technical effects of the communication device according to the fifteenth aspect, please refer to the technical effects of the method according to any possible implementation of the ninth aspect, and the details will not be described again here.

[0272]

[0214] According to a sixteenth aspect, there is provided a communication device, the communication device including a transmitting module and a receiving module, The receiving module is configured to receive configuration information of the reference signal; and The transmitting module is configured to transmit the reference signal via M antenna ports based on the configuration information, where M is an integer greater than 0, and the M antenna ports include at least one first antenna port, and the comb teeth occupied by the first antenna port are determined based on at least a first offset, and the first offset is determined based on at least a time domain resource occupied by the first antenna port and / or a frequency domain resource occupied by the first antenna port.

[0273]

[0215] It should be noted that all relevant contents of steps in any possible implementation of the tenth aspect can be cited in the functional description of the corresponding functional module, and the details will not be described again here.

[0274]

[0216] It should be noted that the receiving module and the transmitting module may be arranged separately or may be integrated into one module, i.e., a transceiver module. The specific implementation of the receiving module and the transmitting module is not particularly limited in this application.

[0275]

[0217] Optionally, the communication device according to the sixteenth aspect may further include a processing module and a storage module. The storage module stores a program or instruction. When the processing module executes the program or instruction, the communication device according to the sixteenth aspect is capable of performing a method according to any possible implementation of the tenth aspect.

[0276]

[0218] It should be noted that the communication device according to the sixteenth aspect may be a terminal device, or may be a chip (system) or another part or component that can be disposed in a terminal device, which is not particularly limited in the present application.

[0277]

[0219] Note that, for the technical effects of the communication device according to the 16th aspect, please refer to the technical effects of the method according to any possible implementation of the 10th aspect, and the details will not be described again here.

[0278]

[0220] According to a seventeenth aspect, there is provided a communication device, the communication device including a transmitting module and a receiving module, The transmitting module is configured to transmit configuration information of the reference signal; and The receiving module is configured to receive a reference signal via M antenna ports based on the configuration information, where M is an integer greater than 0, and the M antenna ports include at least one first antenna port, and a starting position of a frequency domain resource occupied by the first antenna port is determined based on at least a fourth offset, the fourth offset being determined based on at least a time domain resource occupied by the first antenna port and a pseudo-random sequence; or the fourth offset is determined based on one of a plurality of ninth correspondences and the time domain resource occupied by the first antenna port, the ninth correspondence including a correspondence between the at least one fourth offset and the at least one time domain resource, and the plurality of ninth correspondences corresponding to the same frequency scaling factor.

[0279]

[0221] It should be noted that all relevant contents of steps in any possible implementation of the eleventh aspect can be cited in the functional description of the corresponding functional module, and the details will not be described again here.

[0280]

[0222] It should be noted that the receiving module and the transmitting module may be arranged separately or may be integrated into one module, i.e., a transceiver module. The specific implementation of the receiving module and the transmitting module is not particularly limited in this application.

[0281]

[0223] Optionally, the communication device according to the seventeenth aspect may further include a processing module and a storage module. The storage module stores a program or instruction. When the processing module executes the program or instruction, the communication device according to the seventeenth aspect is capable of performing a method according to any possible implementation of the eleventh aspect.

[0282]

[0224] It should be noted that the communication device according to the seventeenth aspect may be a network device, or may be a chip (system) or another part or component that can be disposed in a network device, which is not particularly limited in the present application.

[0283]

[0225] Note that, for the technical effects of the communication device according to the seventeenth aspect, please refer to the technical effects of the method according to any possible implementation of the eleventh aspect, and the details will not be described again here.

[0284]

[0226] According to an eighteenth aspect, there is provided a communication device, the communication device including a transmitting module and a receiving module, The receiving module is configured to receive configuration information of the reference signal; and The transmitting module is configured to transmit the reference signal via M antenna ports based on the configuration information, where M is an integer greater than 0, and the M antenna ports include at least one first antenna port, and a starting position of a frequency domain resource occupied by the first antenna port is determined based on at least a fourth offset, the fourth offset being determined based on at least a time domain resource occupied by the first antenna port and a pseudo-random sequence; or the fourth offset is determined based on one of a plurality of ninth correspondences and the time domain resource occupied by the first antenna port, the ninth correspondence including a correspondence between the at least one fourth offset and the at least one time domain resource, and the plurality of ninth correspondences corresponding to the same frequency scaling factor.

[0285]

[0227] It should be noted that all relevant contents of steps in any possible implementation of the twelfth aspect can be cited in the functional description of the corresponding functional module, and the details will not be described again here.

[0286]

[0228] It should be noted that the receiving module and the transmitting module may be arranged separately or may be integrated into one module, i.e., a transceiver module. The specific implementation of the receiving module and the transmitting module is not particularly limited in this application.

[0287]

[0229] Optionally, the communication device according to the eighteenth aspect may further include a processing module and a storage module. The storage module stores a program or instruction. When the processing module executes the program or instruction, the communication device according to the eighteenth aspect is capable of performing a method according to any possible implementation of the twelfth aspect.

[0288]

[0230] It should be noted that the communication device according to the eighteenth aspect may be a terminal device, or may be a chip (system) or another part or component that can be disposed in a terminal device, which is not particularly limited in the present application.

[0289]

[0231] Note that, for the technical effects of the communication device according to the 18th aspect, please refer to the technical effects of the method according to any possible implementation of the 12th aspect, and the details will not be described again here.

[0290]

[0232] According to a nineteenth aspect, there is provided a communication device, the communication device including a transmitting module and a receiving module, The transmitting module is configured to transmit configuration information of the reference signal; and The receiving module is configured to receive a reference signal via M antenna ports based on the configuration information, where M is an integer greater than 0, and the M antenna ports include at least one first antenna port, and a cyclic shift value of the first antenna port is determined based on at least a first code domain offset, and the first code domain offset is determined based on at least a time domain resource occupied by the first antenna port and / or a frequency domain resource occupied by the first antenna port.

[0291] It should be noted that all relevant contents of steps in any possible implementation of the thirteenth aspect can be cited in the functional description of the corresponding functional module, and the details will not be described again here.

[0292]

[0233] It should be noted that the receiving module and the transmitting module may be arranged separately or may be integrated into one module, i.e., a transceiver module. The specific implementation of the receiving module and the transmitting module is not particularly limited in this application.

[0293]

[0234] Optionally, the communication device according to the 19th aspect may further include a processing module and a storage module. The storage module stores a program or instruction. When the processing module executes the program or instruction, the communication device according to the 19th aspect is capable of performing a method according to any possible implementation of the 13th aspect.

[0294]

[0235] It should be noted that the communication device according to the nineteenth aspect may be a network device, or may be a chip (system) or another part or component that can be disposed in a network device, which is not particularly limited in the present application.

[0295]

[0231] Note that, for the technical effects of the communication device according to the 19th aspect, please refer to the technical effects of the method according to any possible implementation of the 13th aspect, and the details will not be described again here.

[0296]

[0237] According to a twentieth aspect, there is provided a communication device, the communication device including a transmitting module and a receiving module, The receiving module is configured to receive configuration information of the reference signal; and The transmitting module is configured to transmit the reference signal via M antenna ports based on the configuration information, where M is an integer greater than 0, and the M antenna ports include at least one first antenna port, and a cyclic shift value of the first antenna port is determined based on at least a first code domain offset, and the first code domain offset is determined based on at least a time domain resource occupied by the first antenna port and / or a frequency domain resource occupied by the first antenna port.

[0297]

[0238] It should be noted that all relevant contents of steps in any possible implementation of the fourteenth aspect can be cited in the functional description of the corresponding functional module, and the details will not be described again here.

[0298]

[0239] It should be noted that the receiving module and the transmitting module may be arranged separately or may be integrated into one module, i.e., a transceiver module. The specific implementation of the receiving module and the transmitting module is not particularly limited in this application.

[0299]

[0240] Optionally, the communication device according to the 20th aspect may further include a processing module and a storage module. The storage module stores a program or instruction. When the processing module executes the program or instruction, the communication device according to the 20th aspect is capable of performing a method according to any possible implementation of the 14th aspect.

[0300]

[0241] It should be noted that the communication device according to the twentieth aspect may be a terminal device, or may be a chip (system) or another part or component that can be disposed in a terminal device, which is not particularly limited in the present application.

[0301]

[0242] Note that, for the technical effects of the communication device according to the 20th aspect, please refer to the technical effects of the method according to any possible implementation of the 14th aspect, and the details will not be described again here.

[0302]

[0243] According to a twenty-first aspect, there is provided a communications device, the communications device including a processor, coupled to a memory, the memory configured to store a computer program.

[0303]

[0244] The processor is configured to execute a computer program stored in the memory to perform a communication method according to any possible implementation of the first to fourth aspects and the ninth to fourteenth aspects.

[0304] In a possible design, the communication device according to the twentieth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an input / output port. The transceiver may be used by the communication device to communicate with another device.

[0305]

[0246] It should be noted that the input port can be configured to implement a receiving function relating to any possible implementation of the first to fourth aspects or the ninth to fourteenth aspects, and the output port can be configured to implement a sending function relating to any possible implementation of the first to fourth aspects or the ninth to fourteenth aspects.

[0306]

[0247] In the present application, the communication device according to the twentieth aspect may be a terminal device or a network device, or a chip or chip system arranged inside a terminal device or a network device.

[0307]

[0248] For technical effects of the communication device according to the 20th aspect, please refer to the technical effects of the communication method according to any implementation of the first to fourth aspects or the ninth to fourteenth aspects. Details will not be described again here.

[0308]

[0249] According to a 21st aspect, there is provided a communication system. The communication system includes a communication device according to the 5th aspect and a communication device according to the 6th aspect, and may further include a communication device according to the 7th aspect and a communication device according to the 8th aspect. Alternatively, the communication system includes a communication device according to the 7th aspect and a communication device according to the 8th aspect.

[0309]

[0250] Alternatively, the communication system comprises a communication device according to the fifth aspect, configured to perform the method according to the first aspect, and a communication device according to the sixth aspect, configured to perform the method according to the second aspect. Alternatively, the communication system comprises a communication device according to the seventh aspect, configured to perform the method according to the third aspect, and a communication device according to the eighth aspect, configured to perform the method according to the fourth aspect.

[0310]

[0251] Alternatively, the communication system may include a communication device according to the 15th aspect and a communication device according to the 16th aspect, and may further include a communication device according to the 17th aspect and a communication device according to the 18th aspect; and / or may include a communication device according to the 19th aspect and a communication device according to the 20th aspect.

[0311]

[0252] Alternatively, the communication system may include a communication device according to the 17th aspect and a communication device according to the 18th aspect, and further include a communication device according to the 19th aspect and a communication device according to the 20th aspect.

[0312] According to a twenty-second aspect, there is provided a chip system. The chip system includes a logic circuit and an input / output port. The logic circuit is configured to perform processing functions related to any possible implementation of the first to fourth aspects or the ninth to fourteenth aspects, and the input / output port is configured to perform transmitting and receiving functions related to any possible implementation of the first to fourth aspects or the ninth to fourteenth aspects. In particular, the input port may be configured to implement a receiving function relating to any possible implementation of the first to fourth aspects or the ninth to fourteenth aspects, and the output port may be configured to implement a transmitting function relating to any possible implementation of the first to fourth aspects or the ninth to fourteenth aspects.

[0313] In a possible design, the chip system further includes a memory configured to store program instructions and data for performing functions in any possible implementation of the first to fourth aspects or the ninth to fourteenth aspects.

[0314]

[0255] A chip system can include a chip; or it may include a chip and other discrete components.

[0315]

[0256] According to a twenty-third aspect, there is provided a computer-readable storage medium. The computer-readable storage medium stores a computer program or instructions. When the instructions or the computer program are executed on a computer, a communication method according to any possible implementation of the first to fourth aspects or the ninth to fourteenth aspects is performed.

[0316] According to a twenty-fourth aspect, there is provided a computer program product. The computer program product includes a computer program or instructions. When the instructions or the computer program are executed on a computer, the method for communicating according to any possible implementation of the first to fourth aspects or the ninth to fourteenth aspects is performed. [Brief explanation of the drawings]

[0317] [Figure 1]

[0258] Figure 1 is a diagram of the architecture of a communication system according to an embodiment of the present application. [Figure 2]

[0259] Figure 2 is a diagram of transmission bandwidth according to an embodiment of the present application. [Figure 3]

[0260] Figure 3 is a diagram of a comb according to an embodiment of the present application. [Figure 4]

[0261] Figure 4 is an application diagram according to an embodiment of the present application. [Figure 5]

[0262] Figure 5 is a schematic flowchart of a communication method according to an embodiment of the present application. [Figure 6]

[0263] Figure 6 is another application diagram according to an embodiment of the present application. [Figure 7]

[0264] Figure 7 is yet another application diagram according to an embodiment of the present application. [Figure 8]

[0265] Figure 8 is yet another application diagram according to an embodiment of the present application. [Figure 9]

[0266] Figure 9 is yet another application diagram according to an embodiment of the present application. [Figure 10]

[0267] Figure 10 is a diagram illustrating yet another application according to an embodiment of the present application. [Figure 11]

[0268] Figure 11 is a schematic flowchart of another communication method according to an embodiment of the present application. [Figure 12]

[0269] Figure 12 is a diagram illustrating yet another application according to an embodiment of the present application. [Figure 13]

[0270] Figure 13 is a schematic flowchart of yet another communication method according to an embodiment of the present application. [Figure 14]

[0271] Figure 14 is a schematic flowchart of yet another communication method according to an embodiment of the present application. [Figure 15]

[0272] Figure 15 is a schematic flowchart of yet another communication method according to an embodiment of the present application. [Figure 16]

[0273] Figure 16 is a configuration diagram of a communication device according to an embodiment of the present application. [Figure 17]

[0274] Figure 17 is a configuration diagram of another communication device according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0318]

[0275] The technical solutions in this application are described below with reference to the accompanying drawings.

[0319]

[0276] The technical solutions in the embodiments of the present application can be applied to various communication systems, for example, frequency division duplex (FDD) systems, time division duplex (TDD) systems, wireless fidelity (Wi-Fi) systems, vehicle-to-everything (V2X) communication systems, device-to-device (D2D) communication systems, multiple-input multiple-output (MIMO) systems, Internet of Vehicles communication systems, 4th generation (4G) mobile communication systems such as long term evolution (LTE) systems or worldwide interoperability for microwave access (WiMAX) communication systems, 5th generation (5G) mobile communication systems such as new radio (NR) systems, and future communication systems such as 6th generation (6G) mobile communication systems.

[0320]

[0277] The communication method provided in the present application is applicable to scenarios related to reference signal transmission. For example, the communication method provided in the present application is applicable to low-frequency scenarios (e.g., frequency bands below 6 GHz) and high-frequency scenarios (e.g., frequency bands above 6 GHz); to single-transmission and reception point (TRP) scenarios and multi-transmission point (Multi-TRP) scenarios and any derivative scenarios thereof; to homogeneous network scenarios and heterogeneous network scenarios; and to multi-point coordinated transmission scenarios.

[0321] All aspects, embodiments, or features are presented in this application by describing systems that may include multiple devices, components, modules, etc. It is to be appreciated and understood that each system may include other devices, components, modules, etc. and / or may not include all of the devices, components, modules, etc. described in connection with the accompanying drawings. Furthermore, combinations of solutions may be used.

[0322]

[0279] Furthermore, in the embodiments of the present application, terms such as "example" and "for example" are used to express providing an example, illustration, or explanation. Any embodiment or design solution described in the present application as an "example" should not be described as being preferred or having more advantages than another embodiment or design solution. Strictly speaking, the word "example" is used to present a concept in a concrete way.

[0323]

[0280] In the embodiments of the present application, "of", "corresponding", and "corresponding" may often be used interchangeably. It should be noted that the meanings conveyed by the terms are consistent unless the differences between the terms are emphasized.

[0324]

[0281] The network architectures and service scenarios described in the embodiments of the present application are intended to more clearly explain the technical solutions in the embodiments of the present application and do not constitute any limitations on the technical solutions provided in the embodiments of the present application. Those skilled in the art can know that with the evolution of network architectures and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application can also be applied to similar technical problems.

[0325]

[0282] To facilitate understanding of the embodiments of the present application, a communication system applicable to the embodiments of the present application will first be described in detail by using the communication system shown in Figure 1 as an example. For example, Figure 1 is a diagram of the architecture of a communication system to which the communication method according to the embodiments of the present application can be applied.

[0326]

[0283] As shown in Figure 1, the communication system includes a network device and a terminal device.

[0327] A terminal device is a terminal that accesses a communication system and has wireless transmission and reception capabilities, or a chip or chip system that can be located in a terminal. A terminal device may also be referred to as user equipment (UE), user device, access terminal, subscriber unit, subscriber station, mobile station (MS), remote station, remote terminal, mobile device, user terminal, terminal, terminal unit, terminal station, terminal equipment, wireless communication device, user agent, or user device.

[0328]

[0285] For example, the terminal device in the embodiments of the present application may be a mobile phone, a wireless data card, a personal digital assistant (PDA) computer, a laptop computer, a tablet computer (Pad), a computer with wireless transmission and reception capabilities, a machine type communication (MTC) terminal, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, an internet of things (IoT) terminal device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home (e.g., a game console, a smart TV, a smart speaker, a smart refrigerator, or fitness equipment), an in-vehicle terminal, or an RSU with terminal capabilities. An access terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device (handset) with wireless communication capabilities, a computing device or another processing device connected to a wireless modem, a wearable device, or the like.

[0329]

[0286] As another example, the terminal device in the embodiments of the present application may be an express terminal in intelligent logistics (e.g., a device capable of monitoring the location of cargo vehicles, or a device capable of monitoring the temperature and humidity of cargo), a wireless terminal in intelligent agriculture (e.g., a wearable device capable of collecting data related to poultry and livestock), a wireless terminal in intelligent architecture (e.g., a smart elevator, a fire monitoring device, or a smart meter), a wireless terminal in intelligent healthcare (e.g., a wearable device capable of monitoring the physiological status of people or animals), a wireless terminal in intelligent transportation (e.g., an intelligent bus, an intelligent vehicle, a shared bike, a battery charge monitoring device, an intelligent traffic light, or an intelligent monitoring and intelligent parking device), or a wireless terminal in intelligent retail (e.g., a vending machine, a self-service checkout machine, or an unmanned convenience store). As another example, the terminal device in the present application may be an on-vehicle module, an on-vehicle assembly, an on-vehicle component, an on-vehicle chip, or an on-vehicle unit that is incorporated into a vehicle as one or more components or units. A vehicle may implement the methods provided in this application via a vehicle-mounted module, vehicle-mounted assembly, vehicle-mounted component, vehicle-mounted chip, or vehicle-mounted unit that is incorporated into the vehicle.

[0330]

[0287] A network device is a device located on the network side of a communication system and having wireless transmission and reception capabilities, or a chip or chip system that can be disposed within a device. Network devices include, but are not limited to, an access point (AP) in a wireless fidelity (Wi-Fi) system, such as a home gateway, router, server, switch, bridge, evolved NodeB (eNB), radio network controller (RNC), NodeB (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved NodeB or home NodeB (HNB)), baseband unit (BBU), wireless relay node, wireless backhaul node, transmission point (TRP; or transmission point (TP)), or remote radio head (RRH). The network device may alternatively be a gNB or transmission point (TRP or TP) in a 5G system, for example, a new radio (NR) system, or one antenna panel or a group of antenna panels (including multiple antenna panels) of a gNB in ​​a 5G system. The network device may alternatively be a network node such as a baseband unit (BBU), a distributed unit (DU), or a road side unit (RSU) with base station functionality that constitutes a gNB or transmission point.

[0331]

[0288] It should be noted that the signal processing method provided in the embodiments of the present application can be applied to any two nodes shown in Figure 1. For specific implementation, please refer to the following method embodiments. The details will not be described again in this application.

[0332]

[0289] It should be noted that the solutions in the embodiments of the present application may also be applied to other communication systems, and the corresponding names may alternatively be replaced by the names of corresponding functions in other communication systems.

[0333]

[0290] It should be understood that Figure 1 is merely a simplified diagrammatic example for ease of understanding, and the communication system may further include other network devices and / or other terminal devices not shown in Figure 1.

[0334]

[0291] To make the embodiments of the present application clearer, the following provides a consistent description of some contents and concepts related to the embodiments of the present application.

[0292] First, configuration information:

[0293] Using an example in which the reference signal is an SRS, the configuration information may be referred to as SRS resource configuration information. Reference signals to which the methods provided in the embodiments of the present application are applicable include, but are not limited to, an SRS and a demodulation reference signal (DMRS). In the present application, an SRS is used as an example for explanation.

[0335]

[0294] For example, the SRS resource configuration information may indicate an SRS resource configuration, which may be semi-statically configured by a network device for a terminal device by using higher layer parameters.

[0336]

[0295] The SRS resource configuration information may include time-frequency-code resources corresponding to each antenna port (antenna port) among at least one antenna port (e.g., an antenna port for transmitting SRS may be referred to as an SRS port).

[0337] For example, SRS resource configuration information may include one or more of the following: N ap SRS ∈{1,2,4} antenna ports

[0338]

number

[0339]

[0297] Optionally, the SRS may be transmitted on corresponding resources between the antenna port of the terminal device and the antenna port of the network device based on the SRS resource configuration indicated by the SRS resource configuration information.

[0340]

[0298] The name of the antenna port is not limited in this application. For example, the antenna port may be referred to as a reference signal port.

[0299] Second, the repetition factor, the sounding bandwidth, the frequency hopping bandwidth, the transmission bandwidth, the frequency hopping period, and the frequency scaling factor P F : The repetition factor R ∈ {1, 2, 4} is quasi-statically configured by the network device by using a higher layer parameter (e.g., repetitionFactor). One reference signal transmission corresponds to R consecutive OFDM symbols within one reference signal resource, and the number of the first OFDM symbol among the R consecutive OFDM symbols that corresponds to one reference signal transmission and is within the reference signal resource is exactly divisible by R.

[0341]

[0301] For example, the sounding bandwidth may be a bandwidth range corresponding to a channel acquired by a network device based on a reference signal.

[0342]

[0302] For example, the frequency hopping bandwidth may be a bandwidth range corresponding to the channel acquired by the network device after a reference signal is transmitted once.

[0343]

[0303] Optionally, the frequency hopping bandwidth may be less than or equal to the sounding bandwidth.

[0344]

[0304] For example, the frequency hopping period may be the number of reference signal transmissions required by a network device to acquire a channel corresponding to the sounding bandwidth.

[0345]

[0305] For example, the sounding bandwidth, frequency hopping bandwidth, and frequency hopping period may be determined based on higher layer parameters or protocol predefined tables.

[0346]

[0306] Frequency scaling factor P FIf the frequency scaling factor P is not set, the transmission bandwidth is equal to the frequency hopping bandwidth. F is set using higher layer parameters, the transmission bandwidth is P F is the percentage.

[0347]

[0307] Figure 2 is a diagram of transmission bandwidth according to an embodiment of the present application.

[0348]

[0308] In Figure 2, the vertical direction represents the frequency domain, the horizontal direction represents the time domain, and each box represents one resource block (RB), which includes 12 subcarriers in the frequency domain. It is assumed that the sounding bandwidth is 16 RBs, the frequency hopping bandwidth is 4 RBs, and the frequency hopping period is 4. As shown in Figure 2(a), the frequency scaling factor P F If is not configured, the transmission bandwidth is 4 RB (shaded box in Fig. 2(a)). As shown in Fig. 2(b), the frequency scaling factor P F If =2 is set, the transmission bandwidth is 2 RB (the shaded box shown in FIG. 2(b)).

[0349]

[0309] Optionally, the SRS may be transmitted between the terminal device and the network device on corresponding resources based on a repetition factor, a sounding bandwidth, a frequency hopping bandwidth, a transmission bandwidth, a frequency hopping period, and a frequency scaling factor.

[0310] Third, cyclic shift value: For example, the reference signal is sequence I u,v (α,δ) (n) and the sequence I u,v (α,δ) (n) is the base sequence

[0350]

number

[0351] For example, sequence I u,v (α,δ) (n) is

[0352]

number

[0353]

[0313] For example, the number of comb teeth may be the number of comb teeth included in the transmission bandwidth of the reference signal.

[0354] Optionally, base sequence I - u,v may be a sequence generated using a ZC (Zadoff-Chu) sequence.

[0355] For example, base sequence I - u,vis a ZC sequence or a sequence generated by intercepting or extending a ZC sequence by cyclic shifting.

[0356]

[0316] If a ZC sequence of length N is z q (n), where n=0, 1,..., N-1, and N is a positive integer, and a sequence of length M generated using ZC sequences is q It can be expressed as (m mod N), where m=0, 1, ..., M-1.

[0357] For example, a ZC sequence of length N may be expressed as follows:

[0318]

[0358]

number

[0359] In some embodiments, the antenna port p i The corresponding cyclic shift α i satisfies the following equation (1):

[0360]

number

[0361]

number

[0362]

number

[0363]

[0321] Optionally, the maximum cyclic shift value n SRS cs,max is the delay domain is n SRS cs,max It can be shown that the phase value 2π is evenly divided into n parts, or SRS cs,max It is possible to show that the time is divided equally into parts, with each cyclic shift value corresponding to the start of one part.

[0364] For example, the maximum cyclic shift value n SRS cs,max is the number of teeth K TC As shown in Table 1, it is possible to accommodate values ​​of K TC If =2, then n SRS cs,max =8. TC = 1, then n SRS cs,max =3. TC = 1, then n SRS cs,max =12. TCIf =8, then n SRS cs,max =6.

[0365] Table 1

[0366] [Table 1]

[0323] 4th, comb teeth, comb teeth quantity K TC , and comb offset k - TC :

[0324] For example, the frequency domain resources may be divided into multiple comb-shaped frequency domain resource groups, and one comb-shaped frequency domain resource group may be one comb.

[0367]

[0325] For example, the number of comb teeth may be the number of comb teeth included in the transmission bandwidth of the reference signal.

[0368]

[0326] Optionally, the number of comb teeth may be referred to as the comb number, which is not limited in the present application.

[0369]

[0327] Optionally, the quantity of subcarriers between any two adjacent subcarriers in a comb may be obtained based on the comb tooth quantity.

[0370]

[0328] For example, the number of comb teeth K TC may be 2, 4, or 8.

[0371]

[0329] Optionally, the comb tooth count may be configured semi-statically by the network device by using higher layer parameters.

[0372]

[0330] Figure 3 shows the number of comb teeth K TC The corresponding frequency domain resource partitioning when the comb number K is 2, 4, or 8 is shown. TC= 2 is used as an example, the even-numbered subcarriers (e.g., subcarriers numbered 0, 2, 4, ...) form a comb-shaped frequency-domain resource group, and the odd-numbered subcarriers (e.g., subcarriers numbered 1, 3, 5, ...) form a comb-shaped frequency-domain resource group. Each box represents one resource element (RE), and one OFDM symbol and one subcarrier form one RE.

[0373]

[0331] For example, the comb offset k - TC is the reference number of comb teeth occupied by the reference signal.

[0374] In some embodiments, the antenna port p i The index k of the comb teeth occupied by TC (pi) satisfies the following equation (2):

[0375]

number

[0333] In the above formula (2), k - TC represents the comb tooth offset, and k - TC ∈{0,1,..., K TC -1}.

[0376]

[0334] Optionally, the comb offset k - TC may be set by the network device by using higher layer parameters (e.g., transmissionComb).

[0335] Part 5, Partial Sounding Offset n offset RPFS : In some embodiments, the antenna port p i Frequency domain starting position k0(pi) may satisfy the following formula (3):

[0377]

number

[0337] In the above formula (3), k - 0 (pi) teeth,

[0378]

number

[0379] In the above formula (3), n offset FH represents the frequency hopping offset.

[0380] In the above formula (3), n offset RPFS represents the partial sounding offset, and the partial sounding offset n offset RPFS satisfies the following equation (4):

[0381]

number

[0382]

[0341] Optionally, the partial sounding start position may be semi-statically configured by the network device by using higher layer parameters (eg, startRBIndexFScaling-r17).

[0383] In some embodiments, the starting resource block hopping offset k hop is defined in the following equation (5) and Table 2. For example, k - hop The value of is determined by the following equation (5), and k hop is k - hop and is determined based on Table 2.

[0384]

number

[0343] In the above formula (5),

[0385]

number

[0386]

number

[0387]

number

[0388]

[0344] In the above formula (5),

[0389]

number

[0390]

[0345] Optionally, b hop and B SRS may be used to determine the frequency hopping stratum index range, b hop and B SRS Both are semi-statically configured by the network device by using higher layer parameters (e.g., freqHopping).

[0391]

[0346] Optionally, N b’ is the upper layer parameter B SRS and C SRS and a protocol pre-defined table, where N bhop =1.

[0392] Table 2

[0393] [Table 2]

[0347] Below, we will use an example related to the protocol predefined table to SRS ,B SRS ,b hop ,N b’ Explain.

[0394] Table 3 is a protocol predefinition table. A network device can define a protocol by using upper layer parameters. SRS =12,B SRS =3,b hop Assuming that =1 is set semi-statically, the network device and the terminal device are in the row with row index 12 and the column index B in Table 3. SRS =1 (i.e., B SRS =b hop ) and the transmission bandwidth of the reference signal is m SRS,bhop = 16 RB; and the row and column index of table 3 with row index 12 is B SRS = 3 (i.e., B SRS =B SRS ) and the transmission bandwidth of the reference signal is m SRS,BSRS = 4 RB. The frequency hopping in this configuration starts from the first layer and ends at the third layer. hop = 1 and B SRS = 3. In this case, the number of reference signal transmissions included in one reference signal frequency hopping period is the product 2*2 = 4 of the number of parallel branches in the second layer N2 = 2 and the number of parallel branches in the third layer N3 = 2.

[0395]

[0349] In the above formula for calculating the number of reference signal transmissions included in a reference signal frequency hopping period, the starting frequency hopping layer index b hop The number of parallel branches in the layer corresponding to bhopIt should be noted that the limit N in Eq. bhop = 1, obtained based on the table, N bhop The value of N does not cause the number of reference signal transmissions included in one reference signal frequency hopping period to change. bhop The reason for specifying =1 is that when the number of reference signal transmissions included in a reference signal frequency hopping period is calculated, only the number of parallel branches in layers after the starting frequency hopping layer needs to be calculated.

[0396] Table 3

[0397] [Table 3] TIFF2025515350000077.tif248170 TIFF2025515350000078.tif225170

[0350] Different cyclic shifts, e.g., α1, α2, can be performed on the same base sequence to obtain different sequences. If α1, α2 satisfy α1mod 2π≠α2mod 2π, then the base sequence r - u,v (n) and the sequence obtained using the cyclic shift α1, and the base sequence r - u,v The sequences obtained with (n) and the cyclic shift α2 are orthogonal to each other, i.e., the cross-correlation coefficient is zero.

[0398] For example, the cross-correlation coefficient between sequences r1(m) and r2(m) (m=0, 1,...,M-1) of length M can be expressed as:

[0399]

number

[0352] A network device can assign sequences obtained based on the same base sequence and different cyclic shift values ​​to different terminal devices, and these different terminal devices can transmit reference signals generated using these sequences (sequences obtained based on the same base sequence and different cyclic shift values) on the same time-frequency resource. These sequences are orthogonal to each other. If the channel between the terminal device and the network device is flat within the length of the sequence, no interference will occur between the terminal devices.

[0400]

[0353] Sequences obtained based on different base sequences (whether the same cyclic shift value or different cyclic shift values ​​are used) are not orthogonal to each other, and a terminal device may transmit reference signals generated using these sequences (sequences obtained based on different base sequences) on the same time-frequency resource. If the channel between the terminal device and the network device is flat within the length of the sequence, interference will occur.

[0401]

[0354] For example, assume that cell 1 includes UE1 and UE2, cell 2 includes UE3 and UE4, UE1 generates a reference signal using a base sequence r1 and a cyclic shift value α1 and transmits the reference signal, UE2 generates a reference signal using a base sequence r1 and a cyclic shift value α2 and transmits the reference signal, UE3 generates a reference signal using a base sequence r2 and a cyclic shift value α3 and transmits the reference signal, and UE4 generates a reference signal using a base sequence r2 and a cyclic shift value α4 and transmits the reference signal, as shown in Table 4.

[0402] Table 4

[0403] [Table 4]

[0355] At the time of transmission, UE1 to UE4 may transmit reference signals on the same time-frequency resource. The channel between UE1 to UE4 and the network device is assumed to be flat on the M subcarriers occupied by the reference signals, which are h1, h2, h3, and h4, respectively. On the m-th subcarrier among the M subcarriers occupied by the reference signals, the received signal y(m) of the network device is as follows:

[0404]

number

[0405]

number

[0357]

[0406]

number

[0407]

number

[0408]

[0358] In this way, when reference signals are transmitted on the same time-frequency resource, no interference occurs between terminal devices using the same base sequence, but interference occurs between terminal devices using different base sequences, and the interference is affected by the cyclic shift value.

[0409] In some embodiments, the antenna port p i The index k of the comb teeth occupied by TC (pi) satisfies the above equation (2). Antenna port p i The index k of the comb teeth occupied by TC (pi) is obtained according to Equation (2), the upper layer parameters (e.g., comb offset k - TC and number of teeth K TC ) does not change, the comb teeth occupied by each antenna port will be constant at different transmission times, and an antenna port will always be interfered with by the same antenna port. This does not lead to interference randomization.

[0410]

[0360] For example, referring to Table 5 and Figure 4, in scenario 1, cell 1 includes UE1, UE2, UE3, and UE4, and each UE includes four antenna ports (e.g., antenna port p0, antenna port p1, antenna port p2, and antenna port p3, respectively). Each antenna port of UE1, UE2, UE3, and UE4 generates a reference signal using base sequence r1 and a cyclic shift value corresponding to each antenna port, and at least the cyclic shift values ​​or occupied comb teeth used by the antenna ports of UE1, UE2, UE3, and UE4 are different. For example, the occupied comb teeth are different and / or the cyclic shift values ​​used are different.

[0411] Cell 2 includes UE5, UE6, UE7, and UE8, each of which includes four antenna ports (e.g., antenna port p0, antenna port p1, antenna port p2, and antenna port p3). Each of the antenna ports of UE5, UE6, UE7, and UE8 generates a reference signal using base sequence r2 and a cyclic shift value corresponding to each antenna port, and at least the cyclic shift values ​​or occupied comb teeth used by the antenna ports of UE5, UE6, UE7, and UE8 are different. For example, the occupied comb teeth are different and / or the cyclic shift values ​​used are different.

[0412] As shown in Figure 4, the frequency domain resource is divided into four comb teeth (comb tooth 1, comb tooth 2, comb tooth 3, and comb tooth 4). In Figure 4, each box represents one RE, different filled boxes represent different comb teeth, and the comb tooth quantity K TC = 4. Since the antenna ports of UEs in the same cell use the same base sequence and different cyclic shift values ​​to generate reference signals, they can use the same base sequence but occupy different comb teeth to generate and transmit reference signals, or use the same base sequence and different cyclic shift values ​​but occupy different comb teeth to generate and transmit reference signals. Therefore, the antenna ports of UEs in the same cell are orthogonal to each other, and there is no interference between the antenna ports of UEs in the same cell.

[0413]

[0361] It should be noted that the method provided in this application is only described by using Scenario 1 as an example in this application. The application scenario is not limited in this application, and the number of cells, the number of UEs included in a cell, the number of antenna ports included in each UE, the number of comb teeth, and the like are not limited.

[0414] Table 5

[0415] [Table 5]

[0362] The comb teeth occupied by the antenna ports of UE1 to UE8 can be obtained according to equation (2).

[0416]

[0363] Specifically, for UE1 to UE8, the four antenna ports of each UE use two comb teeth, with one comb tooth for every two antenna ports, for a total of four comb teeth. As shown in Table 5 and FIG. 4, four terminal devices may transmit reference signals on the same two comb teeth, with the two antenna ports of each UE occupying one comb tooth. The antenna ports of UE1, UE2, UE5, and UE6 jointly occupy comb teeth 1 and 3, and the antenna ports of UE3, UE4, UE7, and UE8 jointly occupy comb teeth 2 and 4. The specific comb teeth occupied by the two specific antenna ports of each UE for transmitting reference signals are fixed.

[0417]

[0364] For example, antenna port p0 and antenna port p2 of each UE occupy one comb tooth, and antenna port p1 and antenna port p3 occupy one comb tooth. For example, the comb tooth occupied by antenna port p0 and antenna port p2 is the comb tooth with a smaller comb tooth index among the two comb teeth occupied by the UE, and the comb tooth occupied by antenna port p1 and antenna port p3 is the comb tooth with a larger comb tooth index among the two comb teeth occupied by the UE. Antenna port p0 and antenna port p2 of UE1 occupy comb tooth 1, antenna port p1 and antenna port p3 of UE1 occupy comb tooth 3, antenna port p0 and antenna port p2 of UE3 occupy comb tooth 2, and antenna port p1 and antenna port p3 of UE3 occupy comb tooth 4. Details will not be described one by one. For ease of understanding, Table 5 and FIG. 4 show the UEs, the corresponding base sequences, and the corresponding comb teeth, but do not show the antenna ports.

[0418]

[0365] It should be noted that the tooth index may also be referred to as the tooth number, which is not a limitation in the present application.

[0419]

[0366] In this way, at any transmission time, each UE transmits a reference signal in the manner shown in Table 5 and Figure 4, and the antenna ports of UE1, UE2, UE5, and UE6 transmit the reference signals by using the same comb teeth, and the reference signals are generated by using different base sequences between the antenna ports of UE1 and UE5 and between UE1 and UE6. Interference exists between UE1 and UE5 and between UE1 and UE6.

[0420]

[0367] In the embodiment of the present application, the transmission time is the time when the reference signal is transmitted.

[0421]

[0368] However, at any transmission time, the comb teeth occupied by each antenna port of each UE are constant, as shown in Table 5 and Figure 4. This causes the antenna port of one UE to experience interference from the same antenna port of the same UE at any transmission time. Referring to Table 5 and Figure 4, the antenna port of UE1 experiences interference from the antenna ports of UE5 and UE6 at any transmission time. Specifically, antenna port p0 and antenna port p2 of UE1 experience interference from antenna port p0 and antenna port p2 of UE5 and antenna port p0 and antenna port p2 of UE6 at any transmission time. The same applies to other UEs, and details will not be described one by one. In this way, interference occurs according to a specific rule during multiple reference signal transmissions. This does not lead to interference randomization or channel estimation.

[0422]

[0369] Hereinafter, with reference to Figures 5 to 12, a communication method provided in an embodiment of the present application will be described in detail. Operations, terms, etc. in the embodiment of the present application may be mutually referenced. This is not limited. Object names, parameter names, etc. in the embodiment of the present application are merely examples, and other names may be used instead in a specific implementation. This is not limited.

[0423]

[0370] For example, Figure 5 is a schematic flowchart of a communication method according to an embodiment of the present application.

[0424]

[0371] As shown in Figure 5, the communication method includes the following steps:

[0425]

[0372] S501: A network device sends configuration information, and in response, a terminal device receives the configuration information.

[0426]

[0373] For example, the configuration information indicates the configuration of the reference signal.

[0427]

[0374] Optionally, the reference signal may include, but is not limited to, an SRS.

[0428]

[0375] Optionally, for specific implementation of the configuration information, please refer to the description in "First Configuration Information." The details will not be described again here.

[0429]

[0376] S502: The terminal device transmits a reference signal through M antenna ports based on the configuration information. Correspondingly, the network device receives the reference signal through the M antenna ports based on the configuration information.

[0430] For example, M is an integer greater than 0.

[0431]

[0378] Optionally, the terminal device may include M antenna ports.

[0432]

[0379] For example, the M antenna ports may include at least one first antenna port.

[0433] For example, the first antenna port may be any antenna port of the terminal device. For example, referring to the above Scenario 1, the terminal device is UE1, and the first antenna port may be any one of antenna port p0 to antenna port p3 of UE1.

[0434]

[0381] In some embodiments, the comb tines occupied by the first antenna port may be determined based on at least the first offset.

[0435]

[0382] For example, referring to scenario 1 above, the comb teeth occupied by one or more of antenna ports p0 to p3 of UE1 may be determined based on at least a first offset.

[0436]

[0383] For example, the first offset may be an integer greater than or equal to 0.

[0437]

[0384] In some embodiments, the comb teeth occupied by the first antenna port may be determined based on the comb tooth quantity, the comb tooth offset, and the first offset.

[0438]

[0385] Optionally, the number of comb teeth is determined based on the transmission bandwidth m SRS,bhop The number of teeth may be the number of teeth included in the number of teeth.

[0439]

[0386] Optionally, the comb offset may be a reference number of comb teeth occupied by the reference signal.

[0440]

[0387] For example, the first offset may be determined based on at least a cell identifier and a time domain resource occupied by the first antenna port, or the first offset may be determined based on a cyclic shift value occupied by the first antenna port.

[0441]

[0388] Optionally, a cell identifier may be set.

[0442]

[0389] Optionally, the cell identifier may be used to determine the pseudo-random sequence.

[0443] For example, the pseudorandom sequence may be c().

[0444] For example, a pseudorandom sequence is

[0445]

number

[0446]

number

[0447]

[0392] For example, the cell identifier may be a configured configuration parameter, for example, the cell identifier may be the first configuration parameter.

[0448]

[0393] For example, the first configuration parameter may be a configuration parameter delivered by a network device to a terminal device in a serving cell, and the first configuration parameter may be an N number ranging from 0 to 65536. SRS ID may be.

[0449]

[0394] For example, the first configuration parameters of terminal devices in the same serving cell are the same, and the first configuration parameters of terminal devices in different serving cells are different.

[0450] In a possible design method, the first offset is determined based on at least a cell identifier and a time domain resource occupied by the first antenna port, and the first offset is determined based on the following parameters: The number of slots included in each system frame, the number of orthogonal frequency division multiplexing OFDM symbols contained in each slot, Number of teeth, and Comb tooth offset The parameter may be further determined based on one or more of:

[0451] Optionally, the time domain resource occupied by the first antenna port may include one or more OFDM symbols, where the one or more OFDM symbols are defined by the following parameters: The system frame number corresponding to the first antenna port, The slot number corresponding to the first antenna port, and OFDM symbol number corresponding to the first antenna port The determination is based on one or more of the following:

[0452]

[0397] In other words, the number of OFDM symbols included in the time domain resource occupied by the first antenna port is not limited in this application.

[0453]

[0398] Optionally, the time domain resources occupied by the M antenna ports may be the same or different.

[0454]

[0399] Optionally, all first antenna ports included in a terminal device belong to the same reference signal resource, and all second antenna ports included in the terminal device belong to the same reference signal resource, and the reference signal resource to which all first antenna ports belong may be the same as or different from the reference signal resource to which all second antenna ports belong.

[0455]

[0400] In some embodiments, the first offset may be a first random number.

[0456]

[0401] In other words, the first offset may be a random number. For example, the first offset is a random number greater than 0.

[0457]

[0402] Optionally, the first offset or the first random number may satisfy equation (6), equation (7), equation (8), or equation (9).

[0458]

number

[0459]

[0404] It should be noted that m in Equation (6), Equation (7), Equation (8), or Equation (9) is independent of the sequence length M. In Equation (6), Equation (7), Equation (8), or Equation (9), an example in which m is an integer in the range of 0 to 7 is used for explanation, and the range of the value of m in Equation (6), Equation (7), Equation (8), or Equation (9) is not limited in the present application.

[0460]

[0405] In the present application, the comb teeth occupied by the first antenna port of the terminal device are determined based on the first offset, so that the frequency domain resources (comb teeth) occupied by the terminal device can be randomly changed at different transmission times. In this way, the terminal devices that cause interference to the terminal device can be randomly changed. Therefore, frequency domain interference randomization is realized, and a better interference randomization effect can be achieved.

[0461]

[0406] In some embodiments, the antenna port p i The index k of the comb teeth occupied by TC (pi)which is determined based on the comb tooth quantity, the comb tooth offset, and the first offset may satisfy the following formula:

[0462]

number

[0463] For example, the antenna port p of the terminal device i The index k of the comb teeth occupied by TC (pi) which is determined based on the comb tooth quantity, the comb tooth offset, and the first offset may satisfy the following equation (10):

[0464]

number

[0408] As in the above equation (2), in equation (10), k - TC represents the comb tooth offset, and k - TC ∈{0,1,...,K TC −1}, and K TC represents the number of comb teeth, and Q1 represents the first offset.

[0465]

[0409] If the first condition is met: N ap SRS =4, and p i ∈{1001,1003}, and n SRS cs,max = 6; or if the second condition is met: N ap SRS =4, and p i ∈{1001,1003}, and n SRS cs ∈{nSRS cs,max / 2,...,n SRS cs,max -1}; if antenna port p i The index k of the comb teeth occupied by TC (pi) which is determined based on the comb tooth quantity, the comb tooth offset, and the first offset can be expressed as:

[0466]

number

[0467]

number

[0410] With reference to Table 6 and Figure 6, the following describes the comb teeth occupied by the antenna ports of each terminal device after the comb teeth occupied by the first antenna port are determined based on at least the first offset.

[0468]

[0411] The above scenario 1 is used as an example. The comb teeth occupied by each antenna port (antenna port p0 to antenna port p3) of UE1 to UE8 are determined based on at least the first offset. The comb teeth occupied by the antenna ports of each UE may be those shown in Table 6 and Figure 6.

[0469]

[0412] At transmission time 1, the antenna ports of UE1, UE2, UE5, and UE6 occupy comb tooth 1 and comb tooth 3, and the antenna ports of UE3, UE4, UE7, and UE8 occupy the same comb tooth 2 and the same comb tooth 4. UE1 is used as an example. The antenna port of UE1 experiences interference from the antenna ports of UE5 and UE6 on comb tooth 1 and comb tooth 3.

[0470]

[0413] Table 6 and Figure 6 use an example in which antenna port p0 and antenna port p2 of each UE occupy one comb tooth, and antenna port p1 and antenna port p3 of each UE occupy one comb tooth. For example, the comb tooth occupied by antenna port p0 and antenna port p2 is the comb tooth with the smaller comb tooth index among the two comb teeth occupied by the UE, and the comb tooth occupied by antenna port p1 and antenna port p3 is the comb tooth with the larger comb tooth index among the two comb teeth occupied by the UE. For ease of understanding, Table 6 and Figure 6 show UEs, corresponding base sequences, and corresponding comb teeth, but do not show antenna ports.

[0471]

[0414] At transmission time 2, the antenna ports of UE1, UE2, UE7, and UE8 occupy comb teeth 1 and 3, and the antenna ports of UE3, UE4, UE5, and UE6 occupy comb teeth 2 and 4. The antenna port of UE1 experiences interference on comb teeth 1 and 3 from the antenna ports of UE7 and UE8.

[0472]

[0415] At transmission time n, the antenna ports of UE1, UE2, UE7, and UE8 occupy comb teeth 2 and 4, and the antenna ports of UE3, UE4, UE5, and UE6 occupy comb teeth 7 and 8. The antenna port of UE1 experiences interference on comb teeth 2 and 4 from the antenna ports of UE7 and UE8.

[0473] Table 6

[0474] [Table 6]

[0416] In this way, the frequency domain resources (comb teeth) occupied by UE1's antenna ports change randomly at different transmission times, and as a result, the UEs that cause interference to UE1 change randomly. At some transmission times, UE5 and UE6 cause interference to UE1. At some transmission times, UE7 and UE8 cause interference to UE1. The antenna ports that cause interference to UE1's antenna ports change randomly to achieve a better interference randomization effect.

[0475]

[0417] In a possible design method, the M antenna ports may further include at least one second antenna port.

[0476]

[0418] Optionally, the second antenna port may be any antenna port of the terminal device.

[0477]

[0419] For example, referring to scenario 1 above, the terminal device is UE1, and antenna port p0 and antenna port p2 of UE1 may be first antenna ports, and antenna port p1 and antenna port p3 of UE1 may be second antenna ports.

[0478]

[0420] Optionally, the comb teeth occupied by the second antenna port may be determined based on at least the second offset Q2.

[0479]

[0421] Optionally, the second offset Q2 is different from the first offset.

[0480]

[0422] For example, referring to Scenario 1 above, the comb teeth occupied by antenna port p0 and antenna port p2 of UE1 may be determined based on at least a first offset, and the comb teeth occupied by antenna port p1 and antenna port p3 of UE1 may be determined based on at least a second offset.

[0481]

[0423] For example, the second offset Q2 may be an integer greater than or equal to zero.

[0482]

[0424] In some embodiments, the comb teeth occupied by the second antenna port may be determined based on the comb tooth quantity, the comb tooth offset, and the second offset.

[0483]

[0425] Optionally, the number of comb teeth may be the number of comb teeth included in the transmission bandwidth of the reference signal.

[0484]

[0426] Optionally, the comb offset may be a reference number of comb teeth occupied by the reference signal.

[0485]

[0427] In some embodiments, the second offset Q2 may be determined based on at least the cell identifier and the time domain resource occupied by the second antenna port.

[0486] In some embodiments, the second offset Q2 may be determined based on at least a cell identifier and a time domain resource occupied by the second antenna port, or the second offset may be determined based on the following parameters: The number of slots included in each system frame, The number of OFDM symbols contained in each slot, Number of teeth, and Comb tooth offset The parameter may be further determined based on one or more of:

[0487] Optionally, the time domain resource occupied by the second antenna port may include one or more OFDM symbols. Optionally, the one or more OFDM symbols may be defined by the following parameters: The system frame number corresponding to the second antenna port, The slot number corresponding to the second antenna port, and OFDM symbol number corresponding to the second antenna port The determination is based on one or more of the following:

[0488]

[0430] In other words, the number of OFDM symbols included in the time domain resource occupied by the second antenna port is not limited in this application.

[0489]

[0441] In some embodiments, the second offset Q2 may be a second random number.

[0490]

[0432] In other words, the second offset may be a random number. For example, the second offset is a random number greater than 0.

[0491]

[0433] Optionally, the second offset or the second random number may satisfy equation (11), equation (12), equation (13), or equation (14).

[0492]

number

[0434] In formula (11), formula (12), formula (13), or formula (14), Q2 represents a second offset or a second random number (Q2 may represent a second offset; if the second offset is a second random number, Q2 may represent the second random number); n f represents the system frame number corresponding to the second antenna port; n s,f μrepresents the slot number corresponding to the second antenna port; l0+l' represents the OFDM symbol number corresponding to the second antenna port, l0 represents the index of the starting OFDM symbol among the one or more OFDM symbols included in the time domain resource occupied by the second antenna port, and l' represents the relative index of a certain OFDM symbol among the one or more OFDM symbols included in the time domain resource occupied by the second antenna port.

[0493]

[0435] The meanings of the other symbols are the same as in equation (6), equation (7), equation (8), or equation (9), where the mathematical symbol Σ represents summation; c() is a pseudorandom sequence, and the pseudorandom sequence is associated with a cell identifier; N slot frame represents the number of slots contained in each system frame; N symb slot represents the number of OFDM symbols contained in each slot; the mathematical symbol mod represents the modulo operation.

[0494]

[0436] In some embodiments, the second offset Q2 may be the sum of the first offset Q1 and the third offset Δ.

[0495]

[0437] Optionally, the third offset Δ may be an integer greater than or equal to 0.

[0496]

[0438] In some embodiments, the third offset may be determined based on at least the cell identifier and the time domain resource occupied by the second antenna port.

[0497]

[0439] Optionally, the third offset may alternatively be determined based on one or more of the following parameters: the number of slots included in each system frame, the number of OFDM symbols included in each slot, the number of comb teeth, and the comb tooth offset.

[0498]

[0440] In some embodiments, the third offset may be a third random number.

[0499] Optionally, the third random number may satisfy equation (15), equation (16), equation (17), or equation (18):

[0500]

number

[0442] In equation (15), equation (16), equation (17), or equation (18), Δ represents a third random number, and the meanings represented by other symbols are the same as those in equation (11), equation (12), equation (13), or equation (14), and the details will not be explained again here.

[0501]

[0443] In the present application, the comb teeth occupied by the first antenna port of the terminal device are determined based on a first offset, and the comb teeth occupied by the second antenna port of the terminal device are determined based on a second offset. As a result, the comb teeth occupied by the antenna ports of the terminal device vary randomly at different transmission times, and the intervals between multiple comb teeth occupied by the antenna port of the same terminal device may also vary randomly. In this way, the antenna ports that cause interference with the antenna ports of the terminal device are random at different transmission times, and at the same transmission time, the antenna ports that cause interference with the antenna ports of the terminal device that occupy different comb teeth may not be antenna ports of the same terminal device. This realizes frequency-domain interference randomization, further improving the degree of freedom of frequency-domain resources occupied by the antenna ports of the terminal device, and further improving the interference randomization effect.

[0502] In some embodiments, the antenna port p i The index k of the comb teeth occupied byTC (pi) which is determined based on the comb tooth quantity, the comb tooth offset, and the second offset may satisfy the following formula:

[0503]

number

[0504] For example, the comb teeth occupied by some antenna ports of the terminal device may be determined based on a first offset, and the comb teeth occupied by other antenna ports of the terminal device may be determined based on a second offset. i The index k of the comb teeth occupied by TC (pi) may satisfy the following formula (19), formula (20), formula (21), or formula (22).

[0505]

number

[0446] As in the above formula (2), in formula (19), formula (20), formula (21), or formula (22), k - TC represents the comb tooth offset, and k - TC ∈{0,1,...,K TC −1}, and K TC represents the number of comb teeth, Q1 represents the first offset, Q2 represents the second offset, and Δ represents the third random number.

[0506] In equation (19), if the first condition is met: N apSRS =4, p i ∈{1001,1003}, and n SRS cs,max = 6; or if the second condition is met: N ap SRS =4, p i ∈{1001,1003}, and n SRS cs ∈{n SRS cs,max / 2,...,n SRS cs,max -1}; if antenna port p i The index k of the comb teeth occupied by TC (pi) which is determined based on the comb tooth quantity, the comb tooth offset, and the first offset can be expressed as:

[0507]

number

[0508]

number

[0509]

number

[0510]

number

[0511]

number

[0512]

number

[0513]

number

[0514]

number

[0451] Referring to Table 7 and Figure 7, the following describes the comb teeth occupied by the antenna ports of each terminal device after the comb teeth occupied by different antenna ports are determined based on at least the first offset or the second offset.

[0515]

[0452] The above scenario 1 is used as an example. The comb teeth occupied by two antenna ports of each of UE1 to UE8 are determined based on at least a first offset, and the comb teeth occupied by the other two antenna ports of each of UE1 to UE8 are determined based on at least a second offset. The comb teeth occupied by the antenna ports of each UE may be those shown in Table 7 and Figure 7.

[0516]

[0453] At transmission time 1, the antenna ports of UE1, UE2, UE5, and UE6 occupy comb tooth 1 and comb tooth 3, and the antenna ports of UE3, UE4, UE7, and UE8 occupy the same comb tooth 2 and the same comb tooth 4.

[0517]

[0454] UE1 is used as an example. At transmission time 1, the antenna port of UE1 experiences interference on comb teeth 1 and comb teeth 3 from the antenna ports of UE5 and UE6.

[0518]

[0455] Table 7 and Figure 7 use an example in which antenna port p0 and antenna port p2 of each UE occupy one comb tooth, and antenna port p1 and antenna port p3 of each UE occupy one comb tooth. For example, the comb tooth occupied by antenna port p0 and antenna port p2 is the comb tooth with the smaller comb tooth index among the two comb teeth occupied by the UE, and the comb tooth occupied by antenna port p1 and antenna port p3 is the comb tooth with the larger comb tooth index among the two comb teeth occupied by the UE. For ease of understanding, Table 7 and Figure 7 show UEs, corresponding base sequences, and corresponding comb teeth, but do not show antenna ports.

[0519]

[0456] At transmission time 2, the antenna ports of UE1, UE2, UE7, and UE8 occupy comb tooth 1, the antenna ports of UE1, UE2, UE5, and UE6 occupy comb tooth 2, the antenna ports of UE3, UE4, UE7, and UE8 occupy comb tooth 3, and the antenna ports of UE3, UE4, UE5, and UE6 occupy comb tooth 4.

[0520]

[0457] UE1 is used as an example. At transmission time 2, the antenna ports of UE1 (e.g., antenna port p0 and antenna port p2) experience interference from the antenna ports of UE7 and UE8 (e.g., antenna port p0 and antenna port p2) at comb tooth 1. The antenna ports of UE1 (e.g., antenna port p1 and antenna port p3) experience interference from the antenna ports of UE5 and UE6 (e.g., antenna port p0 and antenna port p2) at comb tooth 2.

[0521]

[0458] At transmission time n, the antenna ports of UE1, UE2, UE7, and UE8 occupy comb tooth 1, the antenna ports of UE1, UE2, UE5, and UE6 occupy comb tooth 4, the antenna ports of UE3, UE4, UE5, and UE6 occupy comb tooth 2, and the antenna ports of UE3, UE4, UE7, and UE8 occupy comb tooth 3.

[0522]

[0459] UE1 is used as an example. At transmission time n, the antenna ports of UE1 (e.g., antenna port p0 and antenna port p2) experience interference from the antenna ports of UE7 and UE8 (e.g., antenna port p0 and antenna port p2) at comb tooth 1. The antenna ports of UE1 (e.g., antenna port p1 and antenna port p3) experience interference from the antenna ports of UE5 and UE6 (e.g., antenna port p0 and antenna port p2) at comb tooth 4.

[0523] Table 7

[0524] [Table 7]

[0460] In this way, after the comb teeth occupied by two antenna ports of each of UE1 to UE8 are determined based on at least a first offset and the comb teeth occupied by the other two antenna ports of each of UE1 to UE8 are determined based on at least a second offset, the comb teeth occupied by the antenna ports of UE1 change randomly at different transmission time points. For example, at transmission time point 1, UE1 transmits a reference signal through comb teeth 1 and 3, and at transmission time point 2, UE1 transmits a reference signal through comb teeth 1 and 4, so that the antenna ports causing interference to the antenna ports of UE1 change randomly. Furthermore, at the same transmission time point, the antenna ports of the terminal device (antenna port p0 and antenna port p2 of UE1, and antenna port p1 and antenna port p3 of UE1) that cause interference to those occupying different comb teeth may not be antenna ports of the same terminal device. For example, at transmission time point 2, antenna port p0 and antenna port p2 of UE1 experience interference from antenna port p0 and antenna port p2 of UE7 and UE8 at comb tooth 1, and antenna port p1 and antenna port p3 of UE1 experience interference from antenna port p0 and antenna port p2 of UE5 and UE6 at comb tooth 2. This can further improve the degree of freedom of frequency domain resources occupied by antenna ports of terminal devices, further improve the degree of randomization of interference caused to terminal devices, and further improve the interference randomization effect.

[0525] In some embodiments, for scenario 1 above, for each UE, a cyclic shift reference value n SRS CS = is assumed. Antenna port p i The index k of the comb teeth occupied by TC (pi) After being obtained according to equation (2), the comb teeth occupied by each antenna port of each UE are shown in Table 8 and Figure 8.

[0526]

[0462] At transmission time 1, antenna port p0, antenna port p1, antenna port p2, and antenna port p3 of UE1 occupy comb tooth 1. Antenna port p0, antenna port p1, antenna port p2, and antenna port p3 of UE5 occupy comb tooth 1. Other UEs are not listed one by one. For details, please refer to Table 8. UE1 is used as an example. Antenna port p0 to antenna port p3 of UE1 will suffer interference from antenna port p0 to antenna port p3 of UE5 at comb tooth 1.

[0527] Table 8

[0528] [Table 8] TIFF2025515350000108.tif208170

[0463] At transmission time 2, UE1's antenna port p0, antenna port p1, antenna port p2, and antenna port p3 occupy comb tooth 1. UE5's antenna port p0, antenna port p1, antenna port p2, and antenna port p3 occupy comb tooth 1. Other UEs are not listed one by one. For details, please refer to Table 8. UE1 is used as an example. UE1's antenna port p0 to antenna port p3 are subject to interference from UE5's antenna port p0 to antenna port p3 at comb tooth 1.

[0529]

[0464] Similarly, at transmission time n, antenna port p0, antenna port p1, antenna port p2, and antenna port p3 of UE1 occupy comb tooth 1. Antenna port p0, antenna port p1, antenna port p2, and antenna port p3 of UE5 occupy comb tooth 1. Other UEs are not listed one by one. For details, please refer to Table 8. UE1 is used as an example. Antenna port p0 to antenna port p3 of UE1 will suffer interference from antenna port p0 to antenna port p3 of UE5 at comb tooth 1.

[0530]

[0465] At any transmission time, each antenna port will experience interference from the same antenna port. UE1 is used as an example. At any transmission time, antenna port p0 to antenna port p3 of UE1 will experience interference from antenna port p0 to antenna port p3 of UE5. This does not result in interference randomization.

[0531]

[0466] In a possible design method, the first offset is determined based on the cyclic shift value occupied by the first antenna port.

[0532]

[0467] Optionally, there may be a correspondence between the first offset and the cyclic shift value.

[0533]

[0468] In this way, the comb teeth occupied by the antenna ports are obtained based on the first offset, and the value of the first offset is related to the cyclic shift value. In this case, the comb teeth occupied by the antenna ports are affected by the cyclic shift value and the first offset. As a result, the comb teeth occupied by each antenna port and the cyclic shift value used by each antenna port change randomly at different transmission times. The antenna ports that cause interference to the antenna ports of the terminal device also change randomly at different transmission times. At the same transmission time, different antenna ports cause interference to different antenna ports of the terminal device. Two-dimensional interference randomization in the code domain and the frequency domain can be realized, further improving the interference randomization effect and accelerating the interference randomization convergence speed.

[0534]

[0469] Also, due to the introduction of the cyclic shift value, the antenna port p b For UEx antenna port p a The interference level of the interference caused by ( ) may still vary greatly at different transmission times. In this way, a good interference randomization effect can be ensured.

[0535]

[0470] In a possible design method, determining the first offset based on the cyclic shift value occupied by the first antenna port may include: the first offset being determined based on a range to which the cyclic shift value belongs.

[0536]

[0471] Optionally, the range to which the cyclic shift values ​​belong may be divided into at least two intervals.

[0537]

[0472] For example, assume that the range of cyclic shift values ​​is divided into a first range and a second range, and the cyclic shift value is α1. If α1 belongs to the first range, the value of the first offset is k offset0 or if α1 belongs to the second range, the value of the first offset is k offset1 is.

[0538]

[0473] In some embodiments, the antenna port p i For the cyclic shift value corresponding to k, if α1mod 2π∈R0, the first offset value is k offset0 or, if α1 mod 2π∈R1, the value of the first offset is k offset1 Similarly, α1mod 2π∈R y-1 , the value of the first offset is k offset y-1 is.

[0539] where R0 represents the first range, R1 represents the second range, and so on. y-1 represents the yth range, and the mathematical symbol ∈ represents belonging.

[0540]

[0474] Optionally, the following may hold:

[0541]

number

[0542]

[0475] In some embodiments, the cyclic shift value may satisfy the following equation:

[0543]

number

[0544] In some other embodiments, the cyclic shift value may satisfy the following equation:

[0545]

number

[0046] . The details will not be repeated here.

[0546]

[0477] Furthermore, in some embodiments, the cyclic shift value may satisfy the following formula:

[0547]

number

[0478] It should be noted that unless otherwise specified in the embodiments of the present application, the meanings of the parameters in the formulas can be mutually referenced. This is not limited.

[0548]

[0479] It should be noted that the cyclic shift value is not limited in the embodiments of the present application.

[0549] In some embodiments, the first offset is determined based on a cyclic shift value occupied by a first antenna port, and the first offset is determined based on a cyclic shift value occupied by the first antenna port p i The index k of the comb teeth occupied by TC (pi) which is determined based on the comb tooth quantity, the comb tooth offset, and the first offset may satisfy the following formula:

[0550]

number

[0551] For example, the first offset is determined based on the range to which the cyclic shift value belongs, and is assigned to antenna port p i The index k of the comb teeth occupied by TC (pi) which is determined based on the comb tooth quantity, the comb tooth offset, and the first offset may satisfy the following equation (23):

[0552]

number

[0482] As in the above equation (2), in equation (23), k - TC represents the comb tooth offset, and k - TC ∈{0,1,...,K TC −1}, and KTC represents the number of teeth, and k offset0 Or k offset0 may each represent a first offset.

[0553]

[0483] If the first condition is met: N ap SRS =4, p i ∈{1001,1003}, and n SRS cs,max = 6, antenna port p i The index k of the comb teeth occupied by TC (pi) is related to the cyclic shift value. For example, if the cyclic shift value is α1mod 2π∈R0, then the antenna port p i The index k of the comb teeth occupied by TC (pi) satisfies the following equation:

[0554]

number

[0555]

number

[0556]

number

[0557] If neither the first nor the second condition is satisfied (according to the above formula (23), (N ap SRS =4 or p i ∈{1001,1003} or(n SRS cs ∈{0,...,n SRS cs,max / 2-1}, and n SRS cs,max ≠6)), antenna port p i The index k of the comb teeth occupied by TC (pi) is related to the cyclic shift value. For example, if the cyclic shift value is α1mod 2π∈R0, then the antenna port p i The index k of the comb teeth occupied by TC (pi) satisfies the following equation:

[0558]

number

[0559]

number

[0560]

number

[0485] Referring to Table 9 and Figure 9, the following describes the comb teeth occupied by each terminal device after the first offset is determined based on the cyclic shift value occupied by the first antenna port and the comb teeth occupied by the antenna port are determined based on at least the first offset.

[0561]

[0486] The above scenario 1 is used as an example. The first offset is determined based on the cyclic shift value occupied by the first antenna port and the comb teeth occupied by each antenna port (antenna port p0 to antenna port p3) of UE1 to UE8. In the above equation (23), it is assumed that the following equation holds:

[0562]

number

[0563]

number

[0564]

[0487] Referring to Table 9 and Figure 9, at transmission time 1, the antenna ports p0 to p3 of UE1 occupy the comb tooth 1, comb tooth 2, comb tooth 3, and comb tooth 4 respectively; the antenna ports p0 to p3 of UE2 occupy the comb tooth 2, comb tooth 3, comb tooth 4, and comb tooth 1 respectively. The details are not listed one by one. Please refer to Table 9 and Figure 9 for details.

[0565]

[0488] UE1 is used as an example. At transmission time 1, the antenna port p0 of UE1 is subjected to interference from the antenna port p3 of UE2, the antenna port p2 of UE3, the antenna port p1 of UE4, the antenna port p0 of UE5, the antenna port p3 of UE6, the antenna port p3 of UE7, and the antenna port p1 of UE8 on the tooth 1; the antenna port p1 of UE1 is subjected to interference from the antenna port p0 of UE2, the antenna port p3 of UE3, the antenna port p2 of UE4, the antenna port p1 of UE5, the antenna port p0 of UE6, the antenna port p2 of UE7, and the antenna port p2 of UE8 on the tooth 2. Details are not listed one by one. Please refer to Table 9 and Figure 9 for details.

[0566]

[0489] At transmission time 2, UE1's antenna port p0 to antenna port p3 occupy comb tooth 2, comb tooth 3, comb tooth 4, and comb tooth 1 respectively; UE2's antenna port p0 to antenna port p3 occupy comb tooth 3, comb tooth 4, comb tooth 1, and comb tooth 2 respectively. Details are not listed one by one. Please refer to Table 9 and Figure 9 for details.

[0567]

[0490] UE1 is used as an example. At transmission time 2, antenna port p0 of UE1 experiences interference on comb tooth 1 from antenna port p3 of UE2, antenna port p2 of UE3, antenna port p1 of UE4, antenna port p3 of UE5, antenna port p2 of UE6, antenna port p1 of UE7, and antenna port p0 of UE8. Details are not listed one by one. Please refer to Table 9 and Figure 9 for details.

[0568]

[0491] It can be seen that the comb teeth occupied by each antenna port of each UE change at different transmission times, and the antenna ports that cause interference to the same antenna port change randomly. For example, the antenna port that causes interference to antenna port p0 of UE1 is different between transmission time point 1 and transmission time point 2. At the same transmission time point, the antenna ports that cause interference to different antenna ports of the UE are different. For example, at transmission time point 1, the antenna port that causes interference to antenna port p0 of UE1 is different from the antenna port that causes interference to antenna port p1 of UE1, so that the interference randomization effect can be further improved.

[0569]

[0492] Also, due to the introduction of the cyclic shift value, the antenna port p b For UEx antenna port p a The level of interference caused by (a) may still vary greatly at different transmission times. In this way, a good interference randomization effect can be guaranteed.

[0570] Table 9

[0571] [Table 9] TIFF2025515350000124.tif182170

[0493] According to the communication method shown in FIG. 5, the comb teeth occupied by the first antenna port of the terminal device are determined based on the first offset, so that the frequency-domain resources (comb teeth) occupied by the antenna port of the terminal device may change randomly at different transmission times. In this way, the antenna port of the terminal device that causes interference to the antenna port of the terminal device changes randomly. Therefore, frequency-domain interference randomization is realized, and a better interference randomization effect can be achieved.

[0572]

[0494] Alternatively, a cyclic shift value is introduced. The comb teeth occupied by the first antenna port are obtained based on a first offset, and the value of the first offset is related to the cyclic shift value. In this case, the comb teeth occupied by the first antenna port are affected by the cyclic shift value and the first offset. In this way, the comb teeth occupied by each antenna port and the cyclic shift value used by each antenna port change randomly at different transmission times, and the antenna ports that cause interference to the antenna ports of the terminal device also change randomly at different transmission times. At the same transmission time, different antenna ports cause interference to different antenna ports of the terminal device. In this way, two-dimensional interference randomization in both the code domain and the frequency domain can be achieved, further improving the interference randomization effect and accelerating the interference randomization convergence speed.

[0573] In some embodiments, the partial sounding offset n offset RPFS satisfies the above equation (4):

[0574]

number

[0496] Upper layer parameters (e.g., k F and P F ) does not change, the relative position of the partial detection bandwidth in the frequency hopping bandwidth is determined by the starting resource block hopping offset k hop However, k hop is determined based on the index of the frequency hopping period corresponding to the reference signal and a protocol predefined table (e.g., Table 3). Therefore, the partial detection bandwidth occupied by each antenna port has a strong regularity, which does not lead to interference randomization.

[0575]

[0497] Referring to Table 10 and Figure 10, in scenario 2, cell 1 includes UE1 and UE2, and each UE includes two antenna ports (e.g., antenna port p0 and antenna port p1, respectively). Each antenna port of UE1 and UE2 generates a reference signal by using base sequence r1 and a cyclic shift value corresponding to the antenna port, and at least the comb teeth occupied by the antenna ports of UE1 and UE2 or the cyclic shift values ​​used thereby are different.

[0576] Cell 2 includes UE3 and UE4, each of which includes two antenna ports (e.g., antenna port p0 and antenna port p1, respectively). Each antenna port of UE3 and UE4 generates a reference signal by using base sequence r2 and a cyclic shift value corresponding to the antenna port, and at least the comb teeth occupied by the antenna ports of UE3 and UE4 or the cyclic shift values ​​used by them are different.

[0577] In Figure 10, each box represents one RB, the sounding bandwidth is 16 RBs, the frequency hopping bandwidth is 4 RBs, and the frequency hopping period is 4. It should be noted that antenna ports are not shown in Table 10 and Figure 10.

[0578]

[0498] Partial sounding start position index k F and the frequency scaling factor P F where the corresponding antenna ports of the terminal device are the same. Specifically, as shown in Table 10, two UEs can transmit reference signals on the same time-frequency resource.

[0579] Table 10

[0580] [Table 10]

[0499] It is assumed that the antenna ports of UEs in the same cell are orthogonal to each other. F and P F ) does not change, the antenna port of one UE experiences fixed interference at any transmission instant, e.g., the antenna port of UE1 experiences interference from the antenna port of UE3.

[0581]

[0500] For example, Figure 11 is a schematic flowchart of another communication method according to an embodiment of the present application. The method shown in Figure 11 may be used in combination with the method shown in Figure 5 to achieve a better interference randomization effect. Alternatively, the method shown in Figure 11 and the method shown in Figure 5 may be used separately.

[0582]

[0501] As shown in FIG. 11, the communication method includes the following steps:

[0583]

[0502] S1101: A network device transmits configuration information, and in response, a terminal device receives the configuration information.

[0584]

[0503] For the specific implementation of S1101, please refer to S501. The details will not be described again here.

[0585]

[0504] S1102: The terminal device transmits a reference signal through M antenna ports based on the configuration information, and correspondingly, the reference signal is received through the M antenna ports based on the configuration information.

[0586] For example, M is an integer greater than 0.

[0587]

[0506] Optionally, the terminal device may include M antenna ports.

[0588]

[0507] In a possible design method, the starting position of the frequency domain resources occupied by each of the M antenna ports is determined based on at least a fourth offset.

[0589]

[0508] For example, referring to scenario 2 above, the starting position of the frequency domain resources occupied by each of antenna port p0 and antenna port p1 of UE1 can be determined based on at least a fourth offset.

[0590]

[0509] Optionally, the fourth offset may be an integer greater than or equal to zero.

[0591]

[0510] In some embodiments, the fourth offset may be determined based on at least a cell identifier and an index of a frequency hopping period corresponding to the reference signal.

[0592]

[0511] For example, referring to Figure 10, the index of the frequency hopping period corresponding to the reference signal may be: Frequency Hopping Period 1 or the like.

[0593]

[0512] In some embodiments, the fourth offset may be a fourth random number.

[0594]

[0513] In other words, the fourth offset may be a random number. For example, the fourth offset is a random number greater than 0.

[0595]

[0514] Optionally, the fourth offset or the fourth random number may satisfy equation (24) or equation (25).

[0596]

number

[0515] In the formula (24) or (25), k rand represents the fourth offset or the fourth random number (k randmay represent the fourth offset; if the fourth offset is the fourth random number, k rand can represent the fourth random number); the mathematical symbol Σ represents summation; c() is a pseudorandom sequence, and the pseudorandom sequence is associated with the cell identifier;

[0597]

number

[0598]

number

[0599]

number

[0600]

[0516] Optionally, N bhop =1.

[0601]

[0517] The above formula (25) and N bhop It should be noted that for the meaning of the parameters in =1, please refer to the above explanation of Equation (5) and Table 3. The details will not be explained again here.

[0602]

[0518] It should be noted that m in Equation (24) or Equation (25) is independent of the sequence length M. In Equation (24) or Equation (25), an example in which m is an integer ranging from 0 to 7 is used for explanation, and the range of the value of m in Equation (24) or Equation (25) is not limited in the present application.

[0603] In some embodiments, the starting location of the frequency domain resource occupied by each of the M antenna ports is determined based on at least a fourth offset: the starting location of the frequency domain resource occupied by each of the M antenna ports is determined based on at least a fourth offset offset RPFS It may include that the determination may be based on

[0604]

[0520] Optionally, partial sounding offset n offset RPFS may be determined based on the number of subcarriers included in each resource block, the frequency hopping bandwidth, the index of the partial sounding start position, the starting resource block hopping offset, the frequency scaling factor, and the fourth offset.

[0605]

[0521] For example, partial sounding offset n offset RPFS may satisfy the following equation (26):

[0606]

number

[0522] In equation (26), k rand represents the fourth offset.

[0607]

[0523] The meanings of the other parameters in equation (26) are the same as those in equation (4). N sc RB is the number of subcarriers contained in each resource block; m SRS,BSRS represents the frequency hopping bandwidth, and m SRS,BSRS is the upper layer parameter B SRS and C SRS and the frequency hopping bandwidth determined based on a protocol predefined table (e.g., Table 3); k F is the index of the partial sounding start position, and k F∈{0,1,...,P F -1}; k hop represents the starting resource block hopping offset; P F represents the frequency scaling factor.

[0608]

[0524] In some embodiments, the antenna port p i Frequency domain starting position k0 (pi) may satisfy the following equation (27):

[0609]

number

[0525] In the above formula (3), k - 0 (pi) teeth,

[0610]

number

[0611] In the above formula (27), n offset FH represents the frequency hopping offset. Optionally, the frequency hopping offset n offset FH teeth,

[0612]

number

[0613] In the above formula (27), n offset RPFS can represent the partial sounding offset, and the partial sounding offset n offset RPFS can be determined based on the number of subcarriers included in each resource block, the frequency hopping bandwidth, the index of the partial sounding start position, the starting resource block hopping offset, the frequency scaling factor, and the fourth offset, for example, as shown in Equation (26) above.

[0614]

[0528] Referring to Figure 12, the above scenario 2 is used as an example. The starting position of the frequency domain resources occupied by each antenna port (antenna port p0 and antenna port p3) of UE1 to UE4 is determined based on at least the fourth offset. The starting position of the frequency domain resources occupied by each UE may be as shown in Figure 12.

[0615]

[0529] In frequency hopping period 1, the antenna port of UE1 and the antenna port of UE3 occupy the starting position of the same frequency domain resource, and the antenna port of UE2 and the antenna port of UE4 occupy the starting position of the same frequency domain resource.

[0616] In frequency hopping period 2, the antenna port of UE1 and the antenna port of UE4 occupy the same starting position of the frequency domain resource, and the antenna port of UE2 and the antenna port of UE3 occupy the same starting position of the frequency domain resource.

[0617] Similarly, in frequency hopping period n, the antenna port of UE1 and the antenna port of UE3 occupy the same starting position of the frequency domain resource, and the antenna port of UE2 and the antenna port of UE4 occupy the same starting position of the frequency domain resource.

[0618]

[0530] UE1 is used as an example. In frequency hopping period 1, the antenna port of UE3 causes interference to the antenna port of UE1. In frequency hopping period 2, the antenna port of UE4 causes interference to the antenna port of UE1. It can be seen that different antenna ports cause interference to the antenna port of UE1 in different frequency hopping periods. This brings about a good interference randomization effect, can accelerate the interference randomization convergence speed, and can improve channel estimation performance.

[0619]

[0531] According to the communication method shown in Figure 11, when determining the starting position of the frequency domain resource occupied by an antenna port, a fourth offset is introduced, so that the starting position of the frequency domain resource occupied by each antenna port can be randomly changed at different frequency hopping periods, and the antenna port that causes interference to the antenna port of the terminal device can also be randomly changed to achieve frequency domain interference randomization, which brings about a good interference randomization effect, can accelerate the interference randomization convergence speed, and can improve channel estimation performance.

[0620]

[0532] For example, Figure 13 is a schematic flowchart of a communication method according to an embodiment of the present application. The method shown in Figure 13 and the method shown in Figure 5 may be parallel solutions, or may be used in combination.

[0621]

[0533] As shown in Figure 13, the communication method includes the following steps.

[0622]

[0534] S1301: A network device transmits configuration information of a reference signal. In response, a terminal device receives the configuration information of the reference signal.

[0623]

[0535] For specific implementation and configuration information of S1301, please refer to the corresponding description in S501. The details will not be described again here.

[0624]

[0536] S1302: The terminal device transmits reference signals through M antenna ports based on the configuration information. Correspondingly, the network device receives reference signals through the M antenna ports based on the configuration information.

[0625]

[0537] For example, M is an integer greater than 0, and the M antenna ports include at least one first antenna port. For specific implementations of M, M antenna ports, and the first antenna port, please refer to the corresponding description in S502. Details will not be described again here.

[0626]

[0538] In some embodiments, the comb tines occupied by the first antenna port are determined based on at least the first offset.

[0627]

[0539] For example, referring to scenario 1 above, the comb teeth occupied by one or more of antenna port p0 and antenna port p3 of UE1 can be determined based on at least a first offset.

[0628]

[0540] Optionally, the first offset may be an integer greater than or equal to 0.

[0629]

[0541] Optionally, determining the comb teeth occupied by the first antenna port based on at least the first offset may include: the comb teeth occupied by the first antenna port may be determined based on an initial value of the comb teeth occupied by the first antenna port and the first offset.

[0630]

[0542] Optionally, the initial number of comb teeth occupied by the first antenna port may be determined based on the comb tooth offset; alternatively, the initial number of comb teeth occupied by the first antenna port may be determined based on the comb tooth quantity and the comb tooth offset.

[0631]

[0543] Optionally, the number of comb teeth may be the number of comb teeth included in the transmission bandwidth of the reference signal.

[0632]

[0544] Optionally, the comb offset may be a reference number of comb teeth occupied by the reference signal.

[0633]

[0545] For example, the initial value of the comb teeth occupied by the first antenna port may satisfy equation (2) above.

[0634]

[0546] For example, the comb teeth occupied by the first antenna port may be determined based on the comb tooth offset and the first offset; or, alternatively, the comb teeth occupied by the first antenna port may be determined based on the comb tooth quantity, the comb tooth offset, and the first offset.

[0635]

[0547] For example, the first offset may be determined based on at least a time domain resource occupied by the first antenna port and / or a frequency domain resource occupied by the first antenna port.

[0636]

[0548] Optionally, the time domain resource occupied by the first antenna port may comprise one or more OFDM symbols, wherein the one or more OFDM symbols comprised in the time domain resource occupied by the first antenna port are determined by the following parameters: The system frame number corresponding to the first antenna port, The slot number corresponding to the first antenna port, and OFDM symbol number corresponding to the first antenna port The determination may be based on one or more of:

[0637]

[0549] The number of OFDM symbols included in the time domain resource occupied by the first antenna port is not limited in this application.

[0638]

[0550] In a possible design manner, the index of a frequency hopping period in which a time domain resource is located is determined based on the time domain resource occupied by the first antenna port; or the relative index of the time domain resource in one corresponding frequency hopping period is determined based on the time domain resource occupied by the first antenna port, where the relative index is: The relative index of the kth transmission in one frequency hopping period is k-1. It may be defined accordingly.

[0639]

[0551] Optionally, the time domain resources occupied by the M antenna ports may be the same or different.

[0640]

[0552] Optionally, the frequency domain resource occupied by the first antenna port may include one or more sub-bandwidths. The one or more sub-bandwidths included in the frequency domain resource occupied by the first antenna port may be determined by the following parameters: the index of the frequency hopping bandwidth corresponding to the first antenna port, and The transmission bandwidth index corresponding to the first antenna port The determination may be based on one or more of:

[0641]

[0553] In a possible design manner, an index of a frequency hopping bandwidth in which a frequency domain resource is located is determined based on the frequency domain resource occupied by the first antenna port, or an index of one subband corresponding to the frequency domain resource is determined based on the frequency domain resource occupied by the first antenna port, where the subband index may be defined as follows: The sounding bandwidth of the first antenna port corresponds to a*b RBs and may be divided into subbands, where the subband granularity is b, and the subbands are numbered in ascending frequency order, including {0,...,a-1}.

[0642]

[0554] Optionally, the frequency domain resources occupied by the M antenna ports may be the same or different.

[0643]

[0555] In some embodiments, the first offset may include the first random number and / or the fifth random number.

[0644]

[0556] Optionally, the first random number may be determined based on at least a time domain resource occupied by the first antenna port. For example, the first random number may be denoted by Q1.

[0645]

[0557] For example, the first random number may be a random number greater than zero.

[0646] Optionally, the fifth random number may be determined based on at least the frequency domain resource occupied by the first antenna port. For example, the fifth random number may be denoted by Q3.

[0559] For example, the fifth random number may be a random number greater than zero.

[0647]

[0560] In this way, the comb tooth occupied by the first antenna port can be determined based on the first random number and / or the fifth random number.

[0648]

[0561] For example, the comb teeth occupied by the first antenna port may be determined based on the comb tooth quantity, the comb tooth offset, and the first random number; the comb teeth occupied by the first antenna port may be determined based on the comb tooth quantity, the comb tooth offset, and the fifth random number; or the comb teeth occupied by the first antenna port may be determined based on the comb tooth quantity, the comb tooth offset, the first random number, and the fifth random number.

[0649]

[0562] In some embodiments, determining the first random number based on at least the time domain resources occupied by the first antenna port may include: the first random number is determined based on the time domain resources occupied by the first antenna port and a pseudo-random sequence.

[0650]

[0563] Optionally, the pseudo-random sequence may be c(). For the specific implementation of the pseudo-random sequence, please refer to the corresponding description in S502. The details will not be described again here.

[0651] Optionally, the first random number is determined based on a time domain resource occupied by the first antenna port and a pseudo-random sequence, and the first offset is determined based on the following parameters: The number of slots included in each system frame, the number of orthogonal frequency division multiplexing OFDM symbols contained in each slot, The parameter may be further determined based on one or more of: Additionally, the range of the value of the first random number may alternatively be determined based on the comb tooth count and the comb tooth offset.

[0652]

[0565] For example, in the present application, the number of slots included in each system frame may be the number of slots included in one system frame.

[0653]

[0566] For example, in the present application, the number of OFDM symbols included in each slot may be the number of OFDM symbols included in one slot.

[0654]

[0567] Optionally, the first random number may satisfy formula (6), formula (7), formula (8), or formula (9) in S502. Details will not be described again here.

[0655]

[0568] In equation (6), equation (7), equation (8), or equation (9), Q1 represents a first random number; the mathematical symbol Σ represents summation; the mathematical symbol mod represents modulo operation; c() is a pseudorandom sequence; n f represents the system frame number corresponding to the first antenna port (or n f represents the system frame number of the time domain resource occupied by the first antenna port); N slot frame represents the number of slots contained in each system frame; N symb slot represents the number of OFDM symbols contained in each slot; n s,f μ represents the slot number corresponding to the first antenna port (or n s,f μrepresents the slot number of the time domain resource occupied by the first antenna port); l0 represents the index of the starting OFDM symbol among one or more OFDM symbols included in the time domain resource occupied by the first antenna port (or l0 represents the index of the starting OFDM symbol), and l' represents the relative index of a certain OFDM symbol among one or more OFDM symbols included in the time domain resource occupied by the first antenna port (or l' represents the relative index of the time domain resource OFDM symbol occupied by the first antenna port); K TC represents the number of teeth.

[0656]

[0569] In the present application, the comb teeth occupied by the first antenna port of the terminal device are determined based on the first offset, so that the frequency domain resources (comb teeth) occupied by the terminal device can be randomly changed at different transmission times. In this way, the terminal devices that cause interference to the terminal device can be randomly changed. Therefore, frequency domain interference randomization is realized, and a better interference randomization effect can be achieved.

[0657]

[0570] The first random number may be determined based on at least a time domain resource occupied by the first antenna port: The method may further include determining a first random number based on one of the plurality of first correspondence relationships and a time domain resource occupied by the first antenna port. Optionally, the first random number may be replaced with a first variable.

[0658]

[0571] Optionally, one of the plurality of first correspondence relationships may be indicated to the terminal device by the network device. For example, the configuration information of the reference signal may include one of the plurality of first correspondence relationships and / or indication information indicating one of the plurality of first correspondence relationships.

[0659]

[0572] For example, the network device may select one first correspondence relationship from a plurality of first correspondence relationships and instruct the terminal device about the selected first correspondence relationship.

[0660]

[0573] Optionally, one first correspondence may include a correspondence between at least one first random number and at least one time domain resource.

[0661]

[0574] For example, the at least one first random number corresponds one-to-one to at least one time domain resource, For example, the time domain resource may be an OFDM symbol, a system frame number, or a slot number.

[0662]

[0575] For example, the terminal device may obtain, based on the time domain resource occupied by the first antenna port, a first random number corresponding to the time domain resource occupied by the first antenna port from a correspondence relationship between at least one first random number and at least one time domain resource.

[0663]

[0576] For example, the first correspondence relationship 1 includes: the first random number 1 corresponds to the time domain resource 1, and the first random number 2 corresponds to the time domain resource 2. When the first antenna port of the terminal device occupies the time domain resource 1, the terminal device determines that the first random number is the first random number 1 based on the first correspondence relationship 1 and the time domain resource 1 occupied by the first antenna port of the terminal device 1.

[0664] For example, assume that each first correspondence (which may be called a pattern) includes a correspondence between n time-domain resources and n first random numbers. n} for the k-th first correspondence, {x1, x2,..., x n}, the first random number corresponding to the n time domain resources in sequence is {x (1+a)modn ,x (2+a)modn ,...,x (M+a)modn}. {x1,x2,...,x n} has values ​​of {0,1,...,K TC -1}, and K TC is the number of teeth. Optionally, a=1.

[0665]

[0578] In this way, in different time domain resources, the first random number obtained by the terminal device changes randomly, and then the comb teeth occupied by the first antenna port of the terminal device are determined based on the first random number, so that the comb teeth occupied by the terminal device change randomly at different transmission times.

[0666]

[0579] Optionally, one frequency hopping period may include at least one reference signal transmission, and the correspondence between the at least one first random number and the at least one time domain resource includes: a correspondence between the at least one first random number and a relative number of the at least one reference signal transmission in the frequency hopping period.

[0667]

[0580] For example, the at least one first random number corresponds one-to-one to the number of at least one reference signal transmission.

[0668]

[0581] For example, the terminal device may obtain the first random number from a correspondence between the at least one first random number and the relative number of at least one number of reference signal transmissions in a frequency hopping period based on the current number of reference signal transmissions via the first antenna port.

[0669]

[0582] Alternatively, optionally, the correspondence between the at least one first random number and the at least one time domain resource may include: a correspondence between the at least one first random number and an index of at least one frequency hopping period.

[0670]

[0583] For example, the at least one first random number corresponds one-to-one to an index of the at least one frequency hopping period.

[0671]

[0584] For example, the terminal device may obtain a first random number from a correspondence between at least one first random number and an index of at least one frequency hopping period based on an index of a frequency hopping period in which a time domain resource occupied by a first antenna port is located.

[0672]

[0585] Optionally, the network device may instruct different first correspondence relationships to terminal devices in different cells.

[0673]

[0586] In this way, the network device instructs different first correspondence relationships to terminal devices in different cells, so that the terminal devices that cause interference to the terminal devices change randomly, thereby realizing frequency domain interference randomization and achieving a better interference randomization effect.

[0674] In some embodiments, when the first offset is a first random number (where the first random number is determined based on the time domain resource occupied by the first antenna port), i The index k of the comb teeth occupied by TC (pi) which is determined based on the first offset may satisfy the following formula:

[0675]

number

[0676] For example, the antenna port p of the terminal device i The index k of the comb teeth occupied by TC (pi) and determined based on the first random number may satisfy formula (10) in S502, where Q1 represents the first random number or the first offset. For specific implementation, please refer to the description of formula (10) in S502. Details will not be described again here.

[0677] For example, after the comb teeth occupied by the first antenna port are determined based on the first offset (the first offset is determined based on the time domain resource occupied by the first antenna port, and the first offset is a first random number), for the comb teeth occupied by the antenna port of each terminal device, please refer to the description of Table 6 and Figure 6 in S502. Details will not be described again here.

[0678]

[0590] In some embodiments, determining the fifth random number based on at least the frequency domain resources occupied by the first antenna port may include: the fifth random number is determined based on the frequency domain resources occupied by the first antenna port and a pseudo-random sequence.

[0679]

[0591] Optionally, a pseudo-random sequence may be c().

[0680] Optionally, the fifth random number may satisfy equation (28) or equation (29):

[0681]

number

[0682]

[0594] It should be noted that m in Equation (28) or Equation (29) is independent of the sequence length M. In Equation (28) or Equation (29), an example in which m is an integer ranging from 0 to 7 is used for explanation, and the range of the value of m in Equation (28) or Equation (29) is not limited in the present application.

[0683]

[0595] In some other embodiments, determining the fifth random number based on at least the frequency domain resources occupied by the first antenna port may include: the fifth random number is determined based on one of the plurality of second correspondence relationships and the frequency domain resources occupied by the first antenna port.

[0684]

[0596] Optionally, one of the plurality of second correspondence relationships may be indicated to the terminal device by the network device. For example, the configuration information of the reference signal may include one of the plurality of second correspondence relationships and / or indication information indicating one of the plurality of second correspondence relationships.

[0685]

[0597] For example, the network device may select one second correspondence relationship from a plurality of second correspondence relationships and instruct the terminal device about the selected second correspondence relationship.

[0686]

[0598] Optionally, one second correspondence may include a correspondence between at least one fifth random number and at least one frequency domain resource.

[0687]

[0599] For example, the at least one fifth random number corresponds one-to-one to the at least one frequency domain resource.

[0688]

[0600] For example, the terminal device is capable of obtaining a fifth random number corresponding to the frequency domain resource occupied by the first antenna port from a correspondence relationship between at least one fifth random number and at least one frequency domain resource based on the frequency domain resource occupied by the first antenna port.

[0689]

[0601] For example, the specific implementation of the second correspondence relationship is similar to that of the first correspondence relationship. For details, please refer to the description of the first correspondence relationship. The details will not be described again here.

[0690]

[0602] In this way, in different frequency domain resources, the fifth random number obtained by the terminal device changes randomly, and then the comb teeth occupied by the first antenna port of the terminal device are determined based on the fifth random number, so that the frequency domain resources (comb teeth) occupied by the terminal device change randomly at different transmission times.

[0691]

[0603] Optionally, the network device may instruct different second correspondence relationships to terminal devices in different cells.

[0692]

[0604] In this way, the network device instructs different second correspondence relationships to terminal devices in different cells, so that the terminal devices that cause interference to the terminal devices change randomly, thereby realizing interference randomization and achieving a better interference randomization effect.

[0693] In some embodiments, when the first offset is a fifth random number (when the first offset is determined based on the time domain resource occupied by the first antenna port), the antenna port p i The index k of the comb teeth occupied by TC (pi) which is determined based on the fifth offset may satisfy the following formula:

[0694]

number

[0695] For example, the antenna port p of the terminal device i The index k of the comb teeth occupied by TC (pi) which is determined based on the fifth offset may satisfy the following equation (30):

[0696]

number

[0607] In the same way as in the above equation (10), in equation (30), k - TC represents the comb tooth offset, and k - TC ∈{0,1,...,K TC −1}, and K TC represents the number of comb teeth, and Q3 represents the fifth random number or the first offset.

[0697]

[0608] Referring to Table 11, the following describes the comb teeth occupied by the antenna ports of each terminal device after the comb teeth occupied by the first antenna port are determined based on at least the fifth random number.

[0698]

[0609] The above scenario 1 is used as an example. The comb teeth occupied by each antenna port (antenna port p0 to antenna port p3) of UE1 to UE8 are determined based on at least the fifth offset. The comb teeth occupied by the antenna port of each UE may be as shown in Table 11.

[0699]

[0610] In frequency domain resource 1, the antenna ports of UE1, UE2, UE5, and UE6 occupy comb tooth 1 and comb tooth 3, and the antenna ports of UE3, UE4, UE7, and UE8 occupy the same comb tooth 2 and the same comb tooth 4. UE1 is used as an example. The antenna port of UE1 experiences interference from the antenna ports of UE5 and UE6 on comb tooth 1 and comb tooth 3.

[0700]

[0611] It should be noted that Table 11 uses an example in which antenna port p0 and antenna port p2 of each UE occupy one comb tooth, and antenna port p1 and antenna port p3 occupy one comb tooth. For example, the comb tooth occupied by antenna port p0 and antenna port p2 is the comb tooth with the smaller comb tooth index among the two comb teeth occupied by the UE, and the comb tooth occupied by antenna port p1 and antenna port p3 is the comb tooth with the larger comb tooth index among the two comb teeth occupied by the UE. For ease of understanding, Table 11 shows UEs, corresponding base sequences, and corresponding comb teeth, but does not show antenna ports.

[0701]

[0612] In frequency domain resource 2, the antenna ports of UE1, UE2, UE7, and UE8 occupy comb tooth 1 and comb tooth 3, and the antenna ports of UE3, UE4, UE5, and UE6 occupy comb tooth 2 and the same comb tooth 4. The antenna port of UE1 experiences interference on comb tooth 1 and comb tooth 3 from the antenna ports of UE7 and UE8.

[0702]

[0613] At transmission time n, the antenna ports of UE1, UE2, UE7, and UE8 occupy comb teeth 2 and 4, and the antenna ports of UE3, UE4, UE5, and UE6 occupy comb teeth 7 and 8. The antenna port of UE1 experiences interference on comb teeth 2 and 4 from the antenna ports of UE7 and UE8.

[0703]

[0614] Optionally, in Table 11, frequency domain resource 1 may be replaced with frequency domain unit 1, subband 1, frequency hopping bandwidth 1, frequency hopping bandwidth 1, or the like. Frequency domain resource 2 through frequency domain resource n are similar to frequency domain resource 1 and will not be described in detail one by one.

[0704] Table 11

[0705] [Table 11]

[0615] In this way, the comb teeth occupied by UE1's antenna ports change randomly in different frequency domain resources, and as a result, the UEs that cause interference to UE1 change randomly. The UEs that cause interference to UE1 in some frequency domain resources are UE5 and UE6. The UEs that cause interference to UE1 in some frequency domain resources are UE7 and UE8. The antenna ports that cause interference to UE1's antenna ports change randomly to achieve a better interference randomization effect.

[0706] In some embodiments, when the first offset includes a first random number and a fifth random number (where the first random number is determined based on a time-domain resource occupied by the first antenna port and the fifth random number is determined based on a frequency-domain resource occupied by the first antenna port), the first offset may be determined based on the first random number and the fifth random number. i The index k of the comb teeth occupied by TC (pi) which is determined based on the comb tooth quantity, the comb tooth offset, and the first offset may satisfy the following formula:

[0707]

number

[0708]

[0617] For example, the antenna port p of the terminal device i The index k of the comb teeth occupied by TC (pi) which is determined based on the comb tooth quantity, the comb tooth offset, the first random number, and the fifth random number may satisfy the following formula:

[0709]

number

[0618] As in the above equation (10), in equation (31), k - TC represents the comb tooth offset, and k - TC ∈{0,1,...,K TC −1}, and K TC represents the number of comb teeth, Q1 represents the first random number, and Q3 represents the fifth random number.

[0710]

[0619] Below, we will describe the comb teeth occupied by the antenna ports of each terminal device after the comb teeth occupied by the first antenna port are determined based on the first random number and the fifth random number.

[0711]

[0620] The above scenario 1 is used as an example. The comb teeth occupied by each antenna port (antenna port p0 to antenna port p3) of UE1 to UE8 are determined based on the first random number and the fifth random number. The comb teeth occupied by the antenna port of each UE may be a combination of Table 6 and Table 11, for example, as shown in Table 12.

[0712]

[0621] At frequency domain resource 1 and transmission time point 1, the antenna ports of UE1, UE2, UE5, and UE6 occupy comb tooth 1 and comb tooth 3, and the antenna ports of UE3, UE4, UE7, and UE8 occupy the same comb tooth 2 and the same comb tooth 4. UE1 is used as an example. The antenna port of UE1 experiences interference from the antenna ports of UE5 and UE6 on comb tooth 1 and comb tooth 3.

[0713]

[0622] At frequency domain resource 2 and transmission time instant 2, the antenna ports of UE1, UE2, UE7, and UE8 occupy comb tooth 1 and comb tooth 3, and the antenna ports of UE3, UE4, UE5, and UE6 occupy comb tooth 2 and the same comb tooth 4. The antenna port of UE1 experiences interference on comb tooth 1 and comb tooth 3 from the antenna ports of UE7 and UE8.

[0714]

[0623] At frequency domain resource n and transmission time n, the antenna ports of UE1, UE2, UE7, and UE8 occupy comb teeth 2 and 4, and the antenna ports of UE3, UE4, UE5, and UE6 occupy comb teeth 7 and 8. The antenna port of UE1 experiences interference on comb teeth 2 and 4 from the antenna ports of UE7 and UE8.

[0715] Table 12

[0716] [Table 12]

[0624] In this way, the comb teeth occupied by UE1's antenna ports change randomly at different transmission times and different frequency domain resources, so that the UEs that cause interference to UE1 change randomly. The UEs that cause interference to UE1 at some frequency domain resources and some transmission times are UE5 and UE6. The UEs that cause interference to UE1 at some frequency domain resources and some transmission times are UE7 and UE8. The antenna ports that cause interference to UE1's antenna ports change randomly to achieve a better interference randomization effect.

[0717]

[0625] In some other embodiments, the comb teeth occupied by the first antenna port may be determined based on one of a plurality of tenth correspondences and the time domain resources occupied by the first antenna port.

[0718]

[0626] Optionally, one of the plurality of tenth correspondence relationships may be indicated to the terminal device by the network device. For example, the configuration information of the reference signal may include one of the plurality of tenth correspondence relationships and / or indication information indicating one of the plurality of tenth correspondence relationships.

[0719]

[0627] For example, the network device may select one first correspondence relationship from a plurality of tenth correspondence relationships and instruct the terminal device about the selected tenth correspondence relationship.

[0720]

[0628] Optionally, the network device may instruct different tenth correspondence relationships to terminal devices in different cells.

[0721]

[0629] Optionally, one tenth correspondence may include a correspondence between at least one comb value and at least one time domain resource.

[0722]

[0630] For example, at least one comb tooth corresponds one-to-one to at least one time domain resource.

[0723] For example, assume that each tenth correspondence (which may be called a pattern) includes correspondences between n time-domain resources and n comb values. n}, the first random number corresponding to the k-th first correspondence is {cb1,cb2,...,cb n}, the comb tooth values ​​corresponding to the n time domain resources sequentially are expressed as {cb (1+a)modn ,cb (2+a)modn ,...,cb (M+a)modn}. {cb1,cb2,...,cb n} has values ​​of {0,1,...,K TC -1}, and K TC is the number of teeth. Optionally, a=1.

[0724]

[0632] For example, the terminal device may obtain the comb teeth occupied by the first antenna port from the correspondence between at least one comb tooth and at least one time domain resource based on the time domain resource occupied by the first antenna port.

[0725]

[0633] The multiple tenth correspondences may be those shown in Table 13. In Table 13, for example, there are four tenth correspondences, each including four time domain resources, and there are four combs. Tenth correspondences 1 to 4 are different from each other. For details, please refer to Table 13.

[0726]

[0634] For example, in Table 13, transmission time 1 may be replaced with OFDM symbol 1, system frame number 1, slot number 1, time domain resource 1, or time unit 1. Transmission time 2 to transmission time 4 are similar to transmission time 1, and will not be described in detail one by one.

[0727]

[0635] Optionally, in Table 13, the 10th correspondence further includes transmission time 1 to transmission time 8, and the comb teeth corresponding to transmission time 5 to transmission time 8, respectively, are the same as the comb teeth corresponding to transmission time 1 to transmission time 4, respectively.

[0728]

[0636] For example, in the tenth correspondence relationship 1, transmission time points 1 to 4 correspond to comb teeth 1 to 4, respectively, and transmission time points 5 to 8 correspond to comb teeth 1 to 4, respectively.

[0729] Table 13

[0730] [Table 13]

[0637] In this way, the terminal device obtains the comb teeth occupied by the first antenna port by using one of the multiple tenth correspondences and the time-domain resource occupied by the first antenna port, so that the comb teeth occupied at different transmission times change randomly. The network device assigns different tenth correspondences (patterns) to terminal devices in different cells, so that the terminal devices that cause interference to the terminal device change randomly, thereby realizing frequency-domain interference randomization and achieving a better interference randomization effect.

[0731]

[0638] In some other embodiments, the comb teeth occupied by the first antenna port may be determined based on one of a plurality of eleventh correspondence relationships and the frequency domain resources occupied by the first antenna port.

[0732]

[0639] Optionally, one of the eleventh correspondence relationships may be indicated to the terminal device by the network device. For example, the configuration information of the reference signal may include one of the eleventh correspondence relationships and / or indication information indicating one of the eleventh correspondence relationships.

[0733]

[0640] For example, the network device may select one eleventh correspondence relationship from a plurality of eleventh correspondence relationships and instruct the terminal device about the selected eleventh correspondence relationship.

[0734]

[0641] Optionally, the network device may instruct terminal devices in different cells to have different 11th correspondence relationships.

[0735]

[0642] Optionally, one eleventh correspondence relationship may include a correspondence relationship between at least one comb tooth and at least one frequency domain resource.

[0736]

[0643] For example, at least one comb tooth corresponds one-to-one to at least one frequency domain resource.

[0737] For example, assume that each tenth correspondence (which may be called a pattern) includes correspondences between n frequency-domain resources and n comb values. n}, the first random number corresponding to the k-th first correspondence is {cb1,cb2,...,cb n}, the comb tooth values ​​corresponding to the n frequency domain resources sequentially are expressed as {cb (1+a)modn ,cb (2+a)modn ,...,cb (M+a)modn}. {cb1,cb2,...,cb n} has values ​​of {0,1,...,KTC -1}, and K TC is the number of teeth. Optionally, a=1.

[0738]

[0645] For example, the terminal device may obtain the comb teeth occupied by the first antenna port from the correspondence between at least one comb tooth and at least one frequency domain resource based on the frequency domain resource occupied by the first antenna port.

[0739]

[0646] The multiple eleventh correspondences may be those shown in Table 14. In Table 14, for example, there are four eleventh correspondences, each including four frequency domain resources, and there are four combs. The eleventh correspondences 1 to 4 are different from each other. For details, please refer to Table 14.

[0740]

[0647] Optionally, in Table 14, frequency domain resource 1 may be replaced with frequency domain unit 1, subband 1, frequency hopping bandwidth 1, frequency hopping bandwidth 1, or the like. Frequency domain resource 2 to frequency domain resource 4 are similar to frequency domain resource 1, and will not be described in detail one by one.

[0741]

[0648] Optionally, in Table 14, the 11th correspondence relationship further includes frequency domain resource 1 to frequency domain resource 8, and the comb teeth corresponding to frequency domain resource 5 to frequency domain resource 8, respectively, are the same as the comb teeth corresponding to frequency domain resource 1 to frequency domain resource 4, respectively.

[0742] Table 14

[0743] [Table 14]

[0649] In this way, the terminal device obtains the comb teeth occupied by the first antenna port by using one of the multiple 11th correspondences and the frequency domain resource occupied by the first antenna port, so that the comb teeth occupied in different frequency domain resources change randomly. The network device assigns different 11th correspondences (patterns) to terminal devices in different cells, so that the terminal devices that cause interference to the terminal device change randomly, thereby achieving interference randomization and achieving a better interference randomization effect.

[0744]

[0650] In some other embodiments, the comb teeth occupied by the first antenna port may be determined based on one of a plurality of twelfth correspondences and the frequency domain resources and time domain resources occupied by the first antenna port.

[0745]

[0651] Optionally, one of the twelfth correspondence relationships may be indicated to the terminal device by the network device. For example, the configuration information of the reference signal may include indication information indicating one of the twelfth correspondence relationships and / or one of the eleventh correspondence relationships.

[0746]

[0652] For example, the network device may select one twelfth correspondence relationship from a plurality of twelfth correspondence relationships and instruct the terminal device about the selected twelfth correspondence relationship.

[0747]

[0653] Optionally, the network device may instruct different 12th correspondence relationships to terminal devices in different cells.

[0748]

[0654] Optionally, one twelfth correspondence relationship may include a correspondence relationship between at least one comb tooth, at least one time domain resource, and at least one frequency domain resource.

[0749]

[0655] For example, at least one comb tooth corresponds one-to-one to at least one time domain resource and at least one frequency domain resource.

[0750]

[0656] For example, the terminal device may obtain the comb teeth occupied by the first antenna port from the correspondence between at least one comb tooth, at least one time domain resource, and at least one frequency domain resource based on the time domain resources and frequency domain resources occupied by the first antenna port.

[0751]

[0657] The plurality of twelfth correspondence relationships may be, for example, a combination of Table 13 and Table 14, as shown in Table 15.

[0752]

[0658] In Table 15, for example, there are four twelfth correspondences, each of which includes four time domain resources and four frequency domain resources and has four comb teeth. Twelfth correspondences 1 to 4 are different from each other. For details, please refer to Table 15.

[0753] Table 15

[0754] [Table 15]

[0659] In this way, the terminal device obtains the comb teeth occupied by the first antenna port by using one of the multiple twelfth correspondences and the frequency domain resource and the time domain resource occupied by the first antenna port, so that the comb teeth occupied by the first antenna port randomly change in different frequency domain resource and time domain resource. The network device assigns different twelfth correspondences (patterns) to terminal devices in different cells, so that the terminal devices that cause interference to the terminal device randomly change to realize interference randomization and achieve a better interference randomization effect.

[0755]

[0660] In a possible design method, the M antenna ports may further include at least one second antenna port. For the description of the second antenna port, please refer to the corresponding description in S502. The details will not be described again here.

[0756]

[0661] Optionally, the comb tines occupied by the second antenna port may be determined based on at least the second offset.

[0757]

[0662] Optionally, the second offset is different from the first offset.

[0758]

[0663] For example, the second offset may be an integer greater than or equal to zero.

[0759]

[0664] Optionally, determining the comb teeth occupied by the second antenna port based on at least the second offset may include: the comb teeth occupied by the second antenna port may be determined based on an initial value of the comb teeth occupied by the second antenna port and the second offset.

[0760]

[0665] Optionally, the initial number of comb teeth occupied by the second antenna port may be determined based on the comb tooth offset; alternatively, the initial number of comb teeth occupied by the second antenna port may be determined based on the comb tooth quantity and the comb tooth offset.

[0761]

[0666] For example, the initial value of the comb teeth occupied by the second antenna port may satisfy equation (2) above.

[0762]

[0667] For example, the comb teeth occupied by the second antenna port may be determined based on the comb tooth offset and the second offset; or, alternatively, the comb teeth occupied by the second antenna port may be determined based on the comb tooth quantity, the comb tooth offset, and the second offset.

[0763]

[0668] For example, the second offset may be determined based on at least a time domain resource occupied by the second antenna port and / or a frequency domain resource occupied by the second antenna port.

[0764]

[0669] Optionally, the time domain resource occupied by the second antenna port may comprise one or more OFDM symbols. Optionally, the one or more OFDM symbols that may be included in the time domain resource occupied by the second antenna port may be defined by the following parameters: The system frame number corresponding to the second antenna port, The slot number corresponding to the second antenna port, and OFDM symbol number corresponding to the second antenna port The determination is based on one or more of the following:

[0765]

[0670] The number of OFDM symbols included in the time domain resource occupied by the second antenna port is not limited in this application.

[0766]

[0671] Optionally, the frequency domain resource occupied by the second antenna port comprises one or more sub-bandwidths. Optionally, the one or more sub-bandwidths comprised in the frequency domain resource occupied by the second antenna port may be determined by the following parameters: the index of the frequency hopping bandwidth corresponding to the second antenna port, and The transmission bandwidth index corresponding to the second antenna port The determination is based on one or more of the following:

[0767]

[0672] Optionally, all first antenna ports included in a terminal device belong to the same reference signal resource, and all second antenna ports included in the terminal device belong to the same reference signal resource, and the reference signal resource to which all first antenna ports belong may be the same as or different from the reference signal resource to which all second antenna ports belong.

[0768]

[0673] In some embodiments, the second offset may include a second random number and / or a sixth random number.

[0769]

[0674] Optionally, the second random number may be determined based on at least a time domain resource occupied by the second antenna port. For example, the second random number may be denoted by Q2.

[0770]

[0675] For example, the second random number may be a random number greater than or equal to zero.

[0771]

[0676] Optionally, the sixth random number may be determined based on at least the frequency domain resource occupied by the second antenna port. For example, the sixth random number may be denoted by Q4.

[0772]

[0677] For example, the sixth random number may be a random number greater than or equal to zero.

[0773]

[0678] In this way, the comb tooth occupied by the second antenna port may be determined based on the second random number and / or the sixth random number.

[0774]

[0679] For example, the comb teeth occupied by the second antenna port may be determined based on the comb tooth quantity, the comb tooth offset, and the second random number; the comb teeth occupied by the second antenna port may be determined based on the comb tooth quantity, the comb tooth offset, and the sixth random number; or the comb teeth occupied by the second antenna port may be determined based on the comb tooth quantity, the comb tooth offset, the second random number, and the sixth random number.

[0775]

[0680] In some embodiments, determining the second random number based on at least the time domain resources occupied by the second antenna port may include: the second random number being determined based on the time domain resources occupied by the second antenna port and a pseudo-random sequence.

[0776]

[0681] Optionally, the second random number is determined based on the time domain resource occupied by the second antenna port and the pseudo-random sequence, and the second random number is determined based on the following parameters: The number of slots included in each system frame, The number of OFDM symbols contained in each slot, Number of teeth, and Comb tooth offset The determination may be further based on one or more of:

[0777]

[0682] Optionally, the first random number may satisfy formula (11), formula (12), formula (13), or formula (14) in S502, the details of which will not be described again here.

[0778]

[0683] In equation (11), equation (12), equation (13), or equation (14), Q2 is a second random number, the mathematical symbol Σ represents a sum, the mathematical symbol mod represents a modulo operation, c() is a pseudorandom sequence, and n f represents the system frame number corresponding to the second antenna port (or n f represents the system frame number of the time domain resource occupied by the second antenna port), N slot frame represents the number of slots in each system frame, and N symb slot represents the number of OFDM symbols in each slot, and n s,f μ represents the slot number corresponding to the second antenna port (or n s,f μ represents the slot number of the time-domain resource occupied by the second antenna port), l0 represents the index of the starting OFDM symbol among the one or more OFDM symbols included in the time-domain resource occupied by the second antenna port, l' represents the relative index of a certain OFDM symbol among the one or more OFDM symbols included in the time-domain resource occupied by the second antenna port (or l' represents the relative index of the OFDM symbol in the time-domain resource occupied by the second antenna port), and K TC represents the number of teeth.

[0779]

[0684] In some other embodiments, determining the second random number based on at least the time domain resources occupied by the second antenna port may include: the second random number being determined based on one of a plurality of third correspondence relationships and the time domain resources occupied by the second antenna port.

[0780]

[0685] Optionally, one of the plurality of third correspondence relationships may be indicated to the terminal device by the network device. For example, the configuration information of the reference signal may include one of the plurality of third correspondence relationships and / or indication information indicating one of the plurality of third correspondence relationships.

[0781]

[0686] For example, the network device may select one third correspondence relationship from a plurality of third correspondence relationships and instruct the terminal device about the selected third correspondence relationship.

[0782]

[0687] Optionally, one third correspondence relationship may include a correspondence relationship between at least one second random number and at least one time domain resource. The specific implementation of the third correspondence relationship is similar to that of the first correspondence relationship. For details, please refer to the above description of the first correspondence relationship. The details will not be described again here.

[0783] For example, the at least one second random number may correspond one-to-one to at least one time-domain resource, for example, the time-domain resource may be an OFDM symbol, a system frame number, or a slot number.

[0784]

[0689] For example, the terminal device may obtain, based on the time domain resource occupied by the second antenna port, a second random number corresponding to the time domain resource occupied by the second antenna port from a correspondence relationship between at least one second random number and at least one time domain resource.

[0785]

[0690] In this way, the second random number obtained by the terminal device changes randomly at different transmission times, and then the comb teeth occupied by the second antenna port of the terminal device are determined based on the second random number, so that the frequency domain resources (comb teeth) occupied by the second antenna port of the terminal device can change randomly at different transmission times.

[0786]

[0691] Optionally, one frequency hopping period may include at least one reference signal transmission, and the correspondence between the at least one second random number and the at least one time domain resource may include: a correspondence between the at least one second random number and a relative number of the at least one reference signal transmission in the frequency hopping period.

[0787]

[0692] For example, the at least one second random number corresponds one-to-one to the number of at least one reference signal transmission.

[0788]

[0693] For example, the terminal device may obtain the second random number from a correspondence between the at least one second random number and the relative number of at least one number of reference signal transmissions in a frequency hopping period based on the current number of reference signal transmissions via the second antenna port.

[0789]

[0694] Optionally, the correspondence between the at least one second random number and the at least one time domain resource may include: a correspondence between the at least one second random number and an index of at least one frequency hopping period.

[0790]

[0695] For example, the at least one second random number corresponds one-to-one to the index of the at least one frequency hopping period.

[0791]

[0696] For example, the terminal device may obtain the second random number from a correspondence between the at least one second random number and the index of the at least one frequency hopping period based on the index of the frequency hopping period in which the time domain resource occupied by the second antenna port is located.

[0792]

[0697] Optionally, the network device may instruct different second correspondence relationships to terminal devices in different cells.

[0793]

[0698] In this way, the network device instructs different second correspondence relationships to terminal devices in different cells, so that the terminal devices that cause interference to the terminal devices change randomly, thereby realizing frequency domain interference randomization and achieving a better interference randomization effect.

[0794]

[0699] In some embodiments, determining the sixth random number based on at least the frequency domain resources occupied by the second antenna port may include: the sixth random number being determined based on the frequency domain resources occupied by the second antenna port and a pseudo-random sequence.

[0795]

[0700] Optionally, a pseudo-random sequence may be c().

[0796]

[0701] Optionally, the sixth random number may satisfy equation (32) or equation (33):

[0797]

number

[0702] In equation (32) or equation (33), Q4 is the sixth random number, the mathematical symbol Σ represents summation, the mathematical symbol mod represents modulo operation, c() is a pseudorandom sequence, k represents a frequency hopping bandwidth index and / or a transmission bandwidth index corresponding to the frequency domain resource occupied by the second antenna port, and K TC represents the number of teeth.

[0798]

[0703] It should be noted that m in Equation (32) or Equation (33) is independent of the sequence length M. In Equation (32) or Equation (33), an example in which m is an integer in the range of 0 to 7 is used for explanation, and the range of the value of m in Equation (32) or Equation (33) is not limited in the present application.

[0799]

[0704] In some other embodiments, determining the sixth random number based on at least the frequency domain resources occupied by the first antenna port may include: the sixth random number being determined based on one of the plurality of fourth correspondence relationships and the frequency domain resources occupied by the second antenna port.

[0800]

[0705] Optionally, one of the plurality of fourth correspondence relationships may be indicated to the terminal device by the network device. For example, the configuration information of the reference signal may include one of the plurality of fourth correspondence relationships and / or indication information indicating one of the plurality of fourth correspondence relationships.

[0801]

[0706] For example, the network device may select one fourth correspondence relationship from a plurality of fourth correspondence relationships and instruct the terminal device about the selected fourth correspondence relationship.

[0802]

[0707] Optionally, one fourth correspondence may include a correspondence between at least one sixth random number and at least one frequency domain resource.

[0803]

[0708] For example, the at least one sixth random number corresponds one-to-one to the at least one frequency domain resource.

[0804]

[0709] For example, the terminal device is capable of obtaining a sixth random number corresponding to the frequency domain resource occupied by the second antenna port from a correspondence relationship between at least one sixth random number and at least one frequency domain resource based on the frequency domain resource occupied by the second antenna port.

[0805]

[0710] For example, the specific implementation of the fourth correspondence relationship is similar to that of the first correspondence relationship. For details, please refer to the description of the first correspondence relationship. The details will not be described again here.

[0806]

[0711] In this way, in different frequency domain resources, the sixth random number obtained by the terminal device changes randomly, and then the comb teeth occupied by the second antenna port of the terminal device are determined based on the sixth random number, so that the frequency domain resources (comb teeth) occupied by the second antenna port of the terminal device change randomly at different transmission times.

[0807]

[0712] Optionally, the network device may instruct different fourth correspondence relationships to terminal devices in different cells.

[0808]

[0713] In this way, the network device instructs different fourth correspondence relationships to terminal devices in different cells, so that the terminal devices that cause interference to the terminal devices change randomly, thereby realizing interference randomization and achieving a better interference randomization effect.

[0809]

[0714] In another possible design method, the second offset may be the sum of the first offset and the third offset.

[0810]

[0715] Optionally, the third offset may be an integer greater than or equal to zero.

[0811]

[0716] In some embodiments, the third offset may be determined based on at least the time domain resources occupied by the second antenna port and / or the frequency domain resources occupied by the second antenna port. For specific implementations of the time domain resources occupied by the second antenna port and the frequency domain resources occupied by the second antenna port, please refer to the above description. Details will not be described again here.

[0812]

[0717] In some embodiments, the third offset may include a third random number and / or a seventh random number.

[0813]

[0718] Optionally, the third random number may be determined based on at least a time domain resource occupied by the second antenna port. For example, the third random number may be denoted by Δ.

[0814]

[0719] For example, the third random number may be a random number greater than or equal to zero.

[0815]

[0720] Optionally, the seventh random number may be determined based on at least a frequency domain resource occupied by the second antenna port. For example, the seventh random number may be denoted by Δ.

[0816]

[0721] For example, the seventh random number may be a random number greater than or equal to zero.

[0817]

[0722] In this way, the comb tooth occupied by the second antenna port may be determined based on the third random number and / or the seventh random number.

[0818]

[0723] For example, the comb teeth occupied by the second antenna port may be determined based on the comb tooth quantity, the comb tooth offset, and a third random number; Alternatively, the comb teeth occupied by the second antenna port may be determined based on the comb tooth quantity, the comb tooth offset, and a seventh random number; or The comb teeth occupied by the second antenna port may be determined based on the comb tooth quantity, the comb tooth offset, the third random number, and the seventh random number.

[0819]

[0724] In some embodiments, determining the third random number based on at least the time domain resources occupied by the second antenna port may include: the third random number being determined based on the time domain resources occupied by the second antenna port and a pseudo-random sequence.

[0820]

[0725] Optionally, the third random number is determined based on the time domain resource occupied by the second antenna port and a pseudo-random sequence, or the third random number is determined based on the following parameters: The number of slots included in each system frame, The number of OFDM symbols contained in each slot, Number of teeth, and Comb tooth offset The determination may be based on one or more of:

[0821]

[0726] Optionally, the third random number may satisfy formula (15), formula (16), formula (17), formula (18), formula (34), or formula (35) in S502. Details will not be described again here.

[0822]

number

[0727] In equation (15), equation (16), equation (17), equation (18), equation (34), or equation (35), Δ is a third random number, the mathematical symbol Σ represents a sum, the mathematical symbol mod represents a modulo operation, c() is a pseudorandom sequence, and n f represents the system frame number corresponding to the second antenna port (or n f represents the system frame number of the time domain resource occupied by the second antenna port), N slot frame represents the number of slots in each system frame, and N symb slot represents the number of OFDM symbols in each slot, and n s,f μ represents the slot number corresponding to the second antenna port (or n s,f μ represents the slot number of the time-domain resource occupied by the second antenna port), l0 represents the index of the starting OFDM symbol among the one or more OFDM symbols included in the time-domain resource occupied by the second antenna port, l' represents the relative index of the OFDM symbol among the one or more OFDM symbols included in the time-domain resource occupied by the second antenna port (or l' represents the relative index of the OFDM symbol in the time-domain resource occupied by the second antenna port), and K TC represents the number of teeth.

[0823]

[0728] In some other embodiments, determining the third random number based on at least the time domain resources occupied by the second antenna port may include: the third random number being determined based on one of a plurality of fifth correspondence relationships and the time domain resources occupied by the second antenna port.

[0824]

[0729] Optionally, one of the plurality of fifth correspondence relationships may be indicated to the terminal device by the network device. For example, the configuration information of the reference signal may include one of the plurality of fifth correspondence relationships and / or indication information indicating one of the plurality of fifth correspondence relationships.

[0825]

[0730] For example, the network device may select one fifth correspondence relationship from a plurality of fifth correspondence relationships and instruct the terminal device about the selected fifth correspondence relationship.

[0826]

[0731] Optionally, one fifth correspondence may include a correspondence between at least one third random number and at least one time domain resource.

[0827]

[0732] For example, the at least one third random number corresponds one-to-one to at least one time domain resource, For example, the time domain resource may be an OFDM symbol, a system frame number, or a slot number.

[0828]

[0733] ​​For example, the terminal device may obtain a third random number corresponding to the time domain resource occupied by the second antenna port from a correspondence relationship between at least one third random number and at least one time domain resource based on the time domain resource occupied by the second antenna port.

[0829]

[0734] For example, the specific implementation of the fifth correspondence relationship is similar to that of the first correspondence relationship. For details, please refer to the description of the first correspondence relationship. The details will not be described again here.

[0830]

[0735] In this way, the third random number obtained by the terminal device changes randomly at different transmission times, and then the comb teeth occupied by the second antenna port of the terminal device are determined based on the third random number, so that the frequency domain resources (comb teeth) occupied by the terminal device can change randomly at different transmission times.

[0831]

[0736] Optionally, one frequency hopping period may include at least one reference signal transmission, and the correspondence between the at least one third random number and the at least one time domain resource may include: a correspondence between the at least one third random number and a relative number of the at least one reference signal transmission in the frequency hopping period.

[0832]

[0737] For example, the at least one third random number corresponds one-to-one to the order of at least one reference signal transmission.

[0833]

[0738] For example, the terminal device may obtain the third random number from a correspondence between at least one third random number and the relative number of at least one number of reference signal transmissions in a frequency hopping period based on the current order of reference signal transmission via the second antenna port.

[0834]

[0739] Alternatively, optionally, the correspondence between the at least one third random number and the at least one time domain resource may include: a correspondence between the at least one third random number and an index of at least one frequency hopping period.

[0835]

[0740] For example, the at least one third random number corresponds one-to-one to the index of the at least one frequency hopping period.

[0836]

[0741] For example, the terminal device may obtain the third random number from a correspondence between the at least one third random number and the index of the at least one frequency hopping period based on the index of the frequency hopping period in which the time domain resource occupied by the second antenna port is located.

[0837]

[0742] Optionally, the network device may instruct different fifth correspondence relationships to terminal devices in different cells.

[0838]

[0743] In this way, the network device instructs different fifth correspondence relationships to terminal devices in different cells, so that the terminal devices that cause interference to the terminal devices change randomly, thereby realizing frequency domain interference randomization and achieving a better interference randomization effect.

[0839] In some embodiments, determining the seventh random number based on at least the frequency domain resources occupied by the second antenna port may include: determining the seventh random number based on the frequency domain resources occupied by the second antenna port and a pseudo-random sequence. Optionally, the pseudo-random sequence may be c().

[0840] Optionally, the seventh random number may satisfy equation (36), equation (37), or equation (38):

[0841]

number

[0746] In equation (36), equation (37), or equation (38), Δ1 is the seventh random number, the mathematical symbol Σ represents a summation, c() is a pseudorandom sequence, the mathematical symbol mod represents a modulo operation, k represents a frequency hopping bandwidth index and / or a transmission bandwidth index corresponding to the frequency domain resource occupied by the second antenna port, and K TC represents the number of teeth.

[0842]

[0747] It should be noted that m in equation (36), equation (37), or equation (38) is independent of the sequence length M. In equation (36), equation (37), or equation (38), an example in which m is an integer in the range of 0 to 7 is used for explanation, and the range of the value of m in equation (36), equation (37), or equation (38) is not limited in the present application.

[0843]

[0748] In some other embodiments, determining the seventh random number based on at least the frequency domain resources occupied by the second antenna port may include: the seventh random number is determined based on one of the plurality of sixth correspondence relationships and the frequency domain resources occupied by the second antenna port.

[0844]

[0749] Optionally, one of the plurality of sixth correspondence relationships may be indicated to the terminal device by the network device. For example, the configuration information of the reference signal may include one of the plurality of sixth correspondence relationships and / or indication information indicating one of the plurality of sixth correspondence relationships.

[0845]

[0750] For example, the network device may select one sixth correspondence relationship from a plurality of sixth correspondence relationships and instruct the terminal device about the selected sixth correspondence relationship.

[0846]

[0751] Optionally, the sixth correspondence includes a correspondence between at least one seventh random number and at least one frequency domain resource.

[0847]

[0752] For example, the at least one seventh random number corresponds one-to-one to at least one frequency domain resource.

[0848]

[0753] For example, the terminal device is capable of obtaining a seventh random number corresponding to the frequency domain resource occupied by the second antenna port from a correspondence relationship between at least one seventh random number and at least one frequency domain resource based on the frequency domain resource occupied by the second antenna port.

[0849]

[0754] For example, the specific implementation of the sixth correspondence relationship is similar to that of the first correspondence relationship. For details, please refer to the description of the first correspondence relationship. The details will not be described again here.

[0850]

[0755] In this way, in different frequency domain resources, the seventh random number obtained by the terminal device changes randomly, and then the comb teeth occupied by the second antenna port of the terminal device are determined based on the seventh random number, so that the frequency domain resources (comb teeth) occupied by the second antenna port of the terminal device may change randomly at different transmission times.

[0851]

[0756] Optionally, the network device may instruct different sixth correspondence relationships to terminal devices in different cells.

[0852]

[0757] In this way, the network device instructs different sixth correspondence relationships to terminal devices in different cells, so that the terminal devices that cause interference to the terminal devices change randomly, thereby realizing interference randomization and achieving a better interference randomization effect.

[0853]

[0758] In the present application, the comb teeth occupied by the first antenna port of the terminal device are determined based on a first offset, and the comb teeth occupied by the second antenna port of the terminal device are determined based on a second offset. As a result, the comb teeth occupied by the antenna ports of the terminal device vary randomly at different transmission times, and the intervals between multiple comb teeth occupied by the same antenna port of the terminal device may also vary randomly. In this way, the antenna ports that cause interference to the antenna ports of the terminal device are random at different transmission times, and at the same transmission time, the antenna ports that cause interference to the antenna ports of the terminal device that occupy different comb teeth may not be the antenna ports of the same terminal device. This can achieve interference randomization, further improving the flexibility of the resources occupied by the antenna ports of the terminal device, and further improving the interference randomization effect.

[0854]

[0759] In some embodiments, if the second offset is a second random number Q2 (where the second random number is determined based on the time domain resource occupied by the second antenna port), i The index k of the comb teeth occupied by TC (pi) which is determined based on the second offset may satisfy the following formula:

[0855]

number

[0856] In some embodiments, if the second offset is a sixth random number Q4 (where the sixth random number is determined based on the frequency domain resource occupied by the first antenna port), i The index k of the comb teeth occupied by TC (pi) which is determined based on the second offset may satisfy the following formula:

[0857]

number

[0858] In some embodiments, if the second offset is the sum of the first offset and the third offset, the first offset is a first random number Q1, and the third offset is a third random number Δ, then the antenna port p i The index k of the comb teeth occupied by TC (pi) which is determined based on the second offset may satisfy the following formula:

[0859]

number

[0860]

number

[0861]

number

[0862]

number

[0765] Referring to Table 7 and Figure 7, the following describes the comb teeth occupied by the antenna ports of each terminal device after the comb teeth occupied by different antenna ports are determined based on at least the first offset or the second offset.

[0863]

[0766] For example, after the comb teeth occupied by different antenna ports of a terminal device are determined based on a first offset (the first offset is determined based on the time domain resource occupied by the first antenna port) or a second offset (the second offset is determined based on the time domain resource occupied by the second antenna port), for the comb teeth occupied by the antenna ports of each terminal device, please refer to the description in Table 7 and Figure 7 in S502. Details will not be described again here.

[0864]

[0767] For example, after the comb teeth occupied by different antenna ports of a terminal device are determined based on a first offset (the first offset is determined based on the frequency domain resources occupied by the first antenna port) or a second offset (the second offset is determined based on the frequency domain resources occupied by the second antenna port), please refer to Table 16 for the comb teeth occupied by the antenna ports of each terminal device.

[0865]

[0768] The above scenario 1 is used as an example. The comb teeth occupied by two antenna ports of each of UE1 to UE8 are determined based on at least a first offset, and the comb teeth occupied by the other two antenna ports of each of UE1 to UE8 are determined based on at least a second offset. The comb teeth occupied by the antenna ports of each UE may be those shown in Table 16.

[0866]

[0769] In frequency domain resource 1, the antenna ports of UE1, UE2, UE5, and UE6 occupy comb tooth 1 and comb tooth 3, and the antenna ports of UE3, UE4, UE7, and UE8 occupy the same comb tooth 2 and the same comb tooth 4.

[0867]

[0770] UE1 is used as an example. In frequency domain resource 1, the antenna port of UE1 experiences interference from the antenna ports of UE5 and UE6 on comb teeth 1 and 3.

[0868]

[0771] It should be noted that Table 16 uses an example in which antenna port p0 and antenna port p2 of each UE occupy one comb tooth, and antenna port p1 and antenna port p3 occupy one comb tooth. For example, the comb tooth occupied by antenna port p0 and antenna port p2 is the comb tooth with the smaller comb tooth index among the two comb teeth occupied by the UE, and the comb tooth occupied by antenna port p1 and antenna port p3 is the comb tooth with the larger comb tooth index among the two comb teeth occupied by the UE. For ease of understanding, Table 16 shows UEs, corresponding base sequences, and corresponding comb teeth, but does not show antenna ports.

[0869]

[0772] In frequency domain resource 2, the antenna ports of UE1, UE2, UE7, and UE8 occupy comb tooth 1, the antenna ports of UE1, UE2, UE5, and UE6 occupy comb tooth 2, the antenna ports of UE3, UE4, UE7, and UE8 occupy comb tooth 3, and the antenna ports of UE3, UE4, UE5, and UE6 occupy comb tooth 4.

[0870]

[0773] UE1 is used as an example. In frequency domain resource 2, the antenna ports (e.g., antenna port p0 and antenna port p2) of UE1 experience interference from the antenna ports (e.g., antenna port p0 and antenna port p2) of UE7 and UE8 in comb tooth 1. The antenna ports (e.g., antenna port p1 and antenna port p3) of UE1 experience interference from the antenna ports (e.g., antenna port p0 and antenna port p2) of UE5 and UE6 in comb tooth 2.

[0871]

[0774] In frequency domain resource n, the antenna ports of UE1, UE2, UE7, and UE8 occupy comb tooth 1, the antenna ports of UE1, UE2, UE5, and UE6 occupy comb tooth 4, the antenna ports of UE3, UE4, UE5, and UE6 occupy comb tooth 2, and the antenna ports of UE3, UE4, UE7, and UE8 occupy comb tooth 3.

[0872]

[0775] UE1 is used as an example. In frequency domain resource n, the antenna ports (e.g., antenna port p0 and antenna port p2) of UE1 experience interference from the antenna ports (e.g., antenna port p0 and antenna port p2) of UE7 and UE8 at comb tooth 1. The antenna ports (e.g., antenna port p1 and antenna port p3) of UE1 experience interference from the antenna ports (e.g., antenna port p0 and antenna port p2) of UE5 and UE6 at comb tooth 4.

[0873]

[0776] Optionally, in Table 16, frequency domain resource 1 may be replaced with frequency domain unit 1, subband 1, frequency hopping bandwidth 1, frequency hopping bandwidth 1, or the like. Frequency domain resource 2 through frequency domain resource n are similar to frequency domain resource 1 and will not be described in detail one by one.

[0874] Table 16

[0875] [Table 16]

[0777] In this way, after the comb teeth occupied by two antenna ports of each of UE1 to UE8 are determined based on at least a first offset and the comb teeth occupied by the other two antenna ports of each of UE1 to UE8 are determined based on at least a second offset, the comb teeth occupied by the antenna ports of UE1 are randomly changed in different frequency domain resources. For example, in frequency domain resource 1, UE1 transmits reference signals through comb teeth 1 and 3, and in frequency domain resource 2, UE1 transmits reference signals through comb teeth 1 and 4, so that the antenna ports causing interference to the antenna ports of UE1 are randomly changed. Furthermore, in the same frequency domain resource, antenna ports of terminal devices (antenna ports p0 and p2 of UE1, and antenna ports p1 and p3 of UE1) that cause interference to antenna ports occupying different comb teeth may not be antenna ports of the same terminal device. For example, in frequency domain resource 2, antenna port p0 and antenna port p2 of UE1 suffer interference from antenna port p0 and antenna port p2 of UE7 and UE8 in comb tooth 1, and antenna port p1 and antenna port p3 of UE1 suffer interference from antenna port p0 and antenna port p2 of UE5 and UE6 in comb tooth 2. This can further improve the flexibility of resources occupied by antenna ports of terminal devices, further improve the degree of randomization of interference caused to terminal devices, and further improve the interference randomization effect.

[0876]

[0778] For example, after the comb teeth occupied by different antenna ports of a terminal device are determined based on a first offset (the first offset is determined based on the time domain resources occupied by the first antenna port and the frequency domain resources occupied by the first antenna port) or a second offset (the second offset is determined based on the time domain resources occupied by the second antenna port and the frequency domain resources occupied by the second antenna port), the comb teeth occupied by the antenna ports of the terminal device of each UE may be a combination of Table 7 and Table 16, for example, as shown in Table 17.

[0877]

[0779] The above Scenario 1 is used as an example. It is used as an example that the comb teeth occupied by two antenna ports of each of UE1 to UE8 and the comb teeth occupied by the other two antenna ports of each of UE1 to UE8 are determined based on at least a second offset. The comb teeth occupied by the antenna ports of each UE may be those shown in Table 17. For specific descriptions, please refer to Table 7 or Table 16.

[0878] Table 17

[0879] [Table 17]

[0780] In this way, after the comb teeth occupied by two antenna ports of each of UE1 to UE8 are determined based on at least a first offset and the comb teeth occupied by the other two antenna ports of each of UE1 to UE8 are determined based on at least a second offset, the comb teeth occupied by the antenna ports of UE1 randomly change at different transmission times and different frequency domain resources. For example, at transmission time 1 and frequency domain resource 1, UE1 transmits a reference signal through comb teeth 1 and 3; at transmission time 2 and frequency domain resource 2, UE1 transmits a reference signal through comb teeth 1 and 4, so that the antenna ports causing interference to the antenna ports of UE1 randomly change. Furthermore, at the same transmission time and the same frequency domain resource, antenna ports of the terminal device (antenna port p0 and antenna port p2 of UE1, and antenna port p1 and antenna port p3 of UE1) that cause interference to those occupying different comb teeth may not be antenna ports of the same terminal device. For example, at transmission time 2 and the same frequency domain resource 2, antenna port p0 and antenna port p2 of UE1 suffer interference from antenna port p0 and antenna port p2 of UE7 and UE8 in comb tooth 1, and antenna port p1 and antenna port p3 of UE1 suffer interference from antenna port p0 and antenna port p2 of UE5 and UE6 in comb tooth 2. This can further improve the flexibility of resources occupied by antenna ports of terminal devices, further improve the degree of randomization of interference caused to terminal devices, and further improve the interference randomization effect.

[0880]

[0781] In some other embodiments, the comb teeth occupied by the second antenna port may be determined based on one of a plurality of thirteenth correspondences and the time domain resources occupied by the second antenna port.

[0881]

[0782] Optionally, one of the plurality of thirteenth correspondence relationships may be indicated to the terminal device by the network device.

[0882] Optionally, the network device may instruct terminal devices in different cells to indicate different thirteenth correspondences.

[0883]

[0783] Optionally, one thirteenth correspondence may include a correspondence between at least one comb tooth and at least one time domain resource.

[0884]

[0784] For example, at least one comb tooth corresponds one-to-one to at least one time domain resource.

[0885]

[0785] Optionally, the thirteenth correspondence is different from the tenth correspondence.

[0886]

[0786] For example, the terminal device may obtain the comb teeth occupied by the second antenna port from the correspondence between at least one comb tooth and at least one time domain resource based on the time domain resource occupied by the second antenna port.

[0887]

[0787] Optionally, the specific implementation of the thirteenth correspondence is the same as that of the tenth correspondence. For details, please refer to the above description of the tenth correspondence. The details will not be described again here.

[0888]

[0788] In some other embodiments, the comb teeth occupied by the second antenna port may be determined based on one of a plurality of fourteenth correspondence relationships and the frequency domain resources occupied by the second antenna port.

[0889]

[0789] Optionally, one of the plurality of fourteenth correspondence relationships may be indicated to the terminal device by the network device.

[0890] Optionally, the network device may instruct different fourteenth correspondences to terminal devices in different cells.

[0891]

[0790] Optionally, one fourteenth correspondence may include a correspondence between at least one comb tooth and at least one frequency domain resource.

[0892]

[0791] For example, at least one comb tooth corresponds one-to-one to at least one frequency domain resource.

[0893]

[0792] Optionally, the fourteenth correspondence is different from the eleventh correspondence.

[0894]

[0793] For example, the terminal device may obtain the comb teeth occupied by the ...

Claims

1. 13. A method of communication comprising: transmitting configuration information of the reference signal; and receiving the reference signals via M antenna ports based on the configuration information, where M is an integer greater than 0, the M antenna ports including at least one first antenna port, and a comb tooth occupied by the first antenna port is determined based on at least a first offset, the first offset being determined based on at least a time domain resource occupied by the first antenna port and / or a frequency domain resource occupied by the first antenna port; A communication method including:

2. 13. A method of communication comprising: receiving configuration information of a reference signal; and transmitting the reference signal via M antenna ports based on the configuration information, where M is an integer greater than 0, the M antenna ports including at least one first antenna port, and a comb tooth occupied by the first antenna port is determined based on at least a first offset, the first offset being determined based on at least a time domain resource occupied by the first antenna port and / or a frequency domain resource occupied by the first antenna port; A communication method including:

3. 3. The communication method according to claim 1, wherein the first offset includes a first random number and / or a fifth random number; the first random number is determined based on at least a time domain resource occupied by the first antenna port; 4. A method of communications, comprising: determining a fifth random number based on at least a frequency domain resource occupied by the first antenna port;

4. 4. The communication method of claim 3, wherein the first random number is determined based on at least a time domain resource occupied by the first antenna port, the method comprising: the first random number is determined based on one of a plurality of first correspondences and a time domain resource occupied by the first antenna port, and the first correspondence includes a correspondence between at least one first random number and at least one time domain resource.

5. In the communication method according to claim 4, one frequency hopping period includes at least one transmission of the reference signal, and the correspondence between the at least one first random number and the at least one time domain resource is: A communication method comprising a correspondence between the at least one first random number and a relative number of the at least one reference signal transmission in the frequency hopping period.

6. In the communication method according to claim 4, the correspondence between the at least one first random number and the at least one time domain resource is: A method of communication comprising a correspondence between at least one first random number and an index of at least one frequency hopping period.

7. 4. The communication method of claim 3, wherein the first random number is determined based on at least a time domain resource occupied by the first antenna port, the method comprising:

11. A method of communication comprising: determining the first random number based on a time domain resource occupied by the first antenna port and a pseudorandom sequence.

8. 8. The communication method according to claim 7, wherein the first random number is determined based on the following parameters: The number of slots in each system frame, The number of OFDM symbols in each slot, Number of teeth, and Comb offset wherein the comb tooth count is a number of comb teeth included in a transmission bandwidth of the reference signal, and the comb tooth offset is a reference number of comb teeth occupied by the reference signal.

9. 9. The communication method according to claim 7, wherein the first random number is: [0010] Q 1 is the first random number, the mathematical symbol Σ represents summation, the mathematical symbol mod represents modulo operation, c() is a pseudorandom sequence, and n f represents the system frame number corresponding to the first antenna port, and N slot frame represents the number of slots in each system frame, and N symb slot represents the number of OFDM symbols in each slot, and n s,f μ represents the slot number corresponding to the first antenna port, and l 0 represents an index of a starting OFDM symbol among one or more OFDM symbols included in a time domain resource occupied by the first antenna port, l′ represents a relative index of an OFDM symbol among one or more OFDM symbols included in a time domain resource occupied by the first antenna port, and K TC represents the number of comb teeth,

10. 10. The communication method according to claim 3, wherein the fifth random number is determined based on at least a frequency domain resource occupied by the first antenna port, the fifth random number comprising: the fifth random number is determined based on one of a plurality of second correspondences and a frequency domain resource occupied by the first antenna port, and the second correspondence includes a correspondence between at least one fifth random number and at least one frequency domain resource.

11. 10. The communication method according to claim 3, wherein the fifth random number is determined based on at least a frequency domain resource occupied by the first antenna port, the fifth random number comprising:

20. The method of claim 19, wherein the fifth random number is determined based on a frequency domain resource occupied by the first antenna port and a pseudorandom sequence.

12. 12. The communication method of claim 11, wherein the fifth random number is: [0025] Q 3 is the fifth random number, the mathematical symbol Σ represents summation, the mathematical symbol mod represents modulo operation, c() is a pseudorandom sequence, k represents a frequency hopping bandwidth index and / or a transmission bandwidth index corresponding to the frequency domain resource occupied by the first antenna port, and K TC represents the number of comb teeth,

13. 13. The communication method according to claim 1, wherein the time domain resource occupied by the first antenna port comprises one or more Orthogonal Frequency Division Multiplexing OFDM symbols, the one or more OFDM symbols comprised in the time domain resource occupied by the first antenna port being determined by the following parameters: a system frame number corresponding to the first antenna port; a slot number corresponding to the first antenna port; and an OFDM symbol number corresponding to the first antenna port; A communication method is determined based on one or more of the following:

14. 14. The communication method according to claim 1, wherein the frequency domain resource occupied by the first antenna port comprises one or more sub-bandwidths, and the one or more sub-bandwidths comprised in the frequency domain resource occupied by the first antenna port are determined by the following parameters: an index of a frequency hopping bandwidth corresponding to the first antenna port; and an index of a transmission bandwidth corresponding to the first antenna port; A communication method is determined based on one or more of the following:

15. 15. The communication method according to claim 1, wherein the M antenna ports include at least one second antenna port, and the comb teeth occupied by the second antenna port are determined based on at least a second offset, the second offset being determined based on at least a time domain resource occupied by the second antenna port and / or a frequency domain resource occupied by the second antenna port, and the second offset is different from the first offset.

16. 16. The communication method according to claim 15, wherein the second offset comprises a second random number and / or a sixth random number; the second random number is determined based on at least a time domain resource occupied by the second antenna port; The sixth random number is determined based on at least a frequency domain resource occupied by the second antenna port.

17. 17. The communication method of claim 16, wherein the second random number is determined based on at least a time domain resource occupied by the second antenna port, the method comprising: the second random number is determined based on one of a plurality of third correspondences and a time domain resource occupied by the second antenna port, and the third correspondence includes a correspondence between at least one second random number and at least one time domain resource.

18. 18. The communication method according to claim 17, wherein one frequency hopping period includes at least one transmission of the reference signal, and the correspondence between the at least one second random number and the at least one time domain resource is: A communication method comprising a correspondence between the at least one second random number and a relative number of the at least one reference signal transmission in the frequency hopping period.

19. 18. The communication method of claim 17, wherein the correspondence between the at least one second random number and the at least one time domain resource is: The method of communication includes a correspondence between at least one second random number and an index of at least one frequency hopping period.

20. 14. The communication method of claim 13, wherein the second random number is determined based on at least a time domain resource occupied by the second antenna port, the method comprising:

23. The method of claim 22, wherein the second random number is determined based on a time domain resource occupied by the second antenna port and a pseudorandom sequence.

21. 21. The communication method of claim 20, wherein the second random number is determined based on the following parameters: The number of slots in each system frame, The number of OFDM symbols in each slot, Number of teeth, and Comb offset wherein the comb tooth count is a number of comb teeth included in a transmission bandwidth of the reference signal, and the comb tooth offset is a reference number of comb teeth occupied by the reference signal.

22. 22. The communication method according to claim 20 or 21, wherein the second random number is: [0030] Q 2 is the second random number, the mathematical symbol Σ represents summation, the mathematical symbol mod represents the modulo operation, c() is a pseudorandom sequence, and n f represents the system frame number corresponding to the second antenna port, and N slot frame represents the number of slots in each system frame, and N symb slot represents the number of OFDM symbols in each slot, and n s,f μ represents the slot number corresponding to the second antenna port, and l 0 represents an index of a starting OFDM symbol among one or more OFDM symbols included in a time domain resource occupied by the second antenna port, l′ represents a relative index of a certain OFDM symbol among one or more OFDM symbols included in a time domain resource occupied by the second antenna port, and K TC represents the number of comb teeth,

23. 23. The communication method according to claim 16, wherein the sixth random number is determined based on at least a frequency domain resource occupied by the second antenna port, the sixth random number comprising: the sixth random number is determined based on one of a plurality of fourth correspondences and a frequency domain resource occupied by the second antenna port, and the fourth correspondence includes a correspondence between at least one sixth random number and at least one frequency domain resource.

24. 23. The communication method according to claim 16, wherein the sixth random number is determined based on at least a frequency domain resource occupied by the second antenna port, the sixth random number comprising: The sixth random number is determined based on a frequency domain resource occupied by the second antenna port and a pseudorandom sequence.

25. 25. The communication method of claim 24, wherein the sixth random number is: [0045] Q 4 is the sixth random number, the mathematical symbol Σ represents a summation, the mathematical symbol mod represents a modulo operation, c() is a pseudorandom sequence, k represents a frequency hopping bandwidth index and / or a transmission bandwidth index corresponding to the frequency domain resource occupied by the second antenna port, and K TC represents the number of comb teeth,

26. 16. The communication method of claim 15, wherein the second offset is a sum of the first offset and a third offset, the third offset being an integer greater than zero.

27. 27. The communications method of claim 26, wherein the third offset is determined based on at least a time domain resource occupied by the second antenna port and / or a frequency domain resource occupied by the second antenna port.

28. 28. The communication method according to claim 27, wherein the third offset comprises a third random number and / or a seventh random number; the third random number is determined based on at least a time domain resource occupied by the second antenna port; The seventh random number is determined based on at least a frequency domain resource occupied by the second antenna port.

29. 30. The communication method of claim 28, wherein the third random number is determined based on at least a time domain resource occupied by the second antenna port, the method comprising: the third random number is determined based on one of a plurality of fifth correspondences and a time domain resource occupied by the second antenna port, and the fifth correspondence includes a correspondence between at least one third random number and at least one time domain resource.

30. 30. The communication method of claim 29, wherein one frequency hopping period includes at least one transmission of the reference signal, and the correspondence between the at least one third random number and the at least one time domain resource is: A communication method comprising a correspondence between the at least one third random number and a relative number of the at least one reference signal transmission in the frequency hopping period.

31. 30. The communication method of claim 29, wherein the correspondence between the at least one third random number and the at least one time domain resource is: The communication method includes a correspondence between at least one third random number and an index of at least one frequency hopping period.

32. 24. The communication method of claim 23, wherein the third random number is determined based on at least a time domain resource occupied by the second antenna port, the method comprising:

20. The method of claim 19, wherein the third random number is determined based on a time domain resource occupied by the second antenna port and a pseudorandom sequence.

33. 33. The communication method of claim 32, wherein the third random number is determined based on the following parameters: The number of slots in each system frame, The number of OFDM symbols in each slot, Number of teeth, and Comb offset wherein the comb tooth count is a number of comb teeth included in a transmission bandwidth of the reference signal, and the comb tooth offset is a reference number of comb teeth occupied by the reference signal.

34. 34. The communication method according to claim 32 or 33, wherein the third random number is: [0050] where Δ is the third random number, the mathematical symbol Σ represents a sum, the mathematical symbol mod represents a modulo operation, c() is a pseudorandom sequence, and n f represents the system frame number corresponding to the second antenna port, and N slot frame represents the number of slots contained in each system frame, and N symb slot represents the number of OFDM symbols contained in each slot, and n s,f μ represents the slot number corresponding to the second antenna port, and l 0 represents an index of a starting OFDM symbol among one or more OFDM symbols included in a time domain resource occupied by the second antenna port, l′ represents a relative index of an OFDM symbol among one or more OFDM symbols included in a time domain resource occupied by the second antenna port, and K TC represents the number of comb teeth,

35. 35. The communication method according to claim 28, wherein the seventh random number is determined based on at least a frequency domain resource occupied by the second antenna port, the seventh random number being ... the seventh random number is determined based on one of a plurality of sixth correspondences and a frequency domain resource occupied by the second antenna port, and the sixth correspondence includes a correspondence between at least one seventh random number and at least one frequency domain resource.

36. 35. The communication method according to claim 28, wherein the seventh random number is determined based on at least a frequency domain resource occupied by the second antenna port, the seventh random number being ...

20. The method of claim 19, wherein the seventh random number is determined based on a frequency domain resource occupied by the second antenna port and a pseudorandom sequence.

37. 37. The communication method of claim 36, wherein the seventh random number is: [006] and Δ 1 is the seventh random number, the mathematical symbol Σ represents summation, c() is a pseudorandom sequence, the mathematical symbol mod represents modulo operation, k represents a frequency hopping bandwidth index and / or a transmission bandwidth index corresponding to the frequency domain resource occupied by the second antenna port, and K TC represents the number of comb teeth,

38. 38. The communication method according to claim 15, wherein the time domain resource occupied by the second antenna port comprises one or more OFDM symbols, the one or more OFDM symbols comprised in the time domain resource occupied by the second antenna port being determined according to the following parameters: a system frame number corresponding to the second antenna port; a slot number corresponding to the second antenna port; and an OFDM symbol number corresponding to the second antenna port; A communication method is determined based on one or more of the following:

39. 39. The communication method according to claim 15, wherein the frequency domain resource occupied by the second antenna port comprises one or more sub-bandwidths, the one or more sub-bandwidths comprised in the frequency domain resource occupied by the second antenna port being determined by the following parameters: an index of a frequency hopping bandwidth corresponding to the second antenna port; and an index of a transmission bandwidth corresponding to the second antenna port; A communication method is determined based on one or more of the following:

40. A communication device, comprising a unit or module adapted to carry out a communication method according to any one of claims 1 to 39.

41. A communication device including a processor, the processor being configured to perform a method according to any one of claims 1 to 39.

42. 40. A computer readable storage medium storing a computer program or instructions which, when executed in a computer, performs the communication method according to any one of claims 1 to 39.

43. 40. A computer program product comprising a computer program or instructions which, when executed on a computer, performs the communication method according to any one of claims 1 to 39.

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