Communication methods and devices

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 China National Intellectual Property Administration on 29 April 2022, and Chinese Patent Application No. 202210969093.3 entitled “Communication Method and Apparatus,” filed with the China National Intellectual Property Administration on 12 August 2022, both of which are incorporated into this application by reference.

[0002]

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

[0003]

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

[0004]

[0004] Embodiments of the present application provide a communication method and apparatus for improving channel estimation performance by enhancing interference randomization.

[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, a communication method is provided. The communication method includes: transmitting configuration information; and receiving a reference signal via M antenna ports based on the configuration information, wherein the configuration information describes the configuration of the reference signal, M is an integer greater than 0, the M antenna ports include at least one first antenna port, the 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 embodiment, the comb teeth occupied by the first antenna port of the terminal device are determined based on a first offset, and as a result, the frequency domain resources (comb teeth) occupied by the terminal device may change randomly at different transmission times. In this way, the terminal devices causing interference to the terminal device change randomly. Thus, frequency domain interference randomization is achieved, and a better interference randomization effect can be achieved.

[0008]

[0008] Instead, according to the method provided in the first aspect, a cyclic shift value is introduced. The 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 teeth occupied by the first antenna port are affected by the cyclic shift value and the first offset. In this way, the 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, the antenna ports that cause interference to different antenna ports of the terminal device are different. In this way, two-dimensional interference randomization in the code domain and frequency domain can be realized, the interference randomization effect can be further enhanced, and the interference randomization convergence speed can be accelerated.

[0009]

[0009] In a possible design method, the first offset is determined based at least on the cell identifier and the time-domain resources occupied by the first antenna port, or the first offset is 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 teeth, and one or more of the tooth offsets, where the number of teeth is the number of teeth included in the transmission bandwidth m of the reference signal SRS,bhop and the tooth offset is the reference number of teeth occupied by the reference signal. In this way, the frequency-domain resources (teeth) occupied by the terminal device may change randomly at different transmission times, and as a result, the terminal devices that cause interference to the terminal device change randomly.

[0010]

[0010] In a possible design method, the time-domain resources occupied by the first antenna port include one or more OFDM symbols, and the one or more OFDM symbols included in the time-domain resources occupied by the first antenna port are determined based on one or more of the following parameters: the system frame number corresponding to the first antenna port, the slot number corresponding to the first antenna port, and the OFDM symbol number corresponding to the first antenna port.

[0011]

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

[0012]

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

[0013]

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

[0014]

[0014] In a possible design method, 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, and as a result, the frequency domain resources (comb teeth) occupied by the terminal device may change randomly at different transmission times. In this way, the terminal device causing interference to the terminal device changes randomly. Thus, a better interference randomization effect can be achieved.

[0017]

[0016] In possible design configurations, the M antenna ports may further include at least one second antenna port, the comb teeth occupied by the second antenna port may be determined based on at least a second offset, the second offset being 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, the second offset being different from the first offset.

[0018]

[0017] In this way, the teeth occupied by the first antenna port of the terminal device are determined based on the first offset, and the teeth occupied by the second antenna port of the terminal device are determined based on the second offset. As a result, the teeth occupied by the antenna ports of the terminal device change randomly at different transmission times, and the interval between a plurality of teeth occupied by the antenna ports of the same terminal device may also change randomly. In this way, the antenna port that causes interference to the antenna port of the terminal device is random at different transmission times, and at the same transmission time, for the antenna ports of the terminal device that occupy different teeth, it is possible to assume that the antenna port that causes interference is not the antenna port of the same terminal device. This can achieve frequency-domain interference randomization, further improve the freedom degree of the frequency-domain resources occupied by the antenna ports of the terminal device, and further improve the interference randomization effect.

[0019]

[0018] In a possible design method, the second offset can be determined based at least on the cell identifier and the time-domain resources occupied by the second antenna port, or the second offset can be determined based on the following parameters: the number of slots included in each system frame, the number of OFDM symbols included in each slot, the number of teeth, and one or more of the tooth offsets. The number of teeth is the number of teeth included in the transmission bandwidth m of the reference signal SRS,bhop and the tooth offset is the reference number of teeth occupied by the reference signal. In this way, the freedom degree of the frequency-domain resources occupied by the antenna ports of the terminal device can be improved, and the interference randomization effect can be further improved.

[0020]

[0019] In possible design configurations, 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: the system frame number corresponding to the second antenna port, the slot number corresponding to the second antenna port, and the 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 this application.

[0021]

[0020] In possible design schemes, the second offset may be a second random number. In other words, the second offset may be a random number.

[0022]

[0021] In possible design schemes, the second random number is:

[0023]

number

[0024]

[0022] In possible design schemes, 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 port of the terminal device may change randomly at different transmission times, and the intervals between multiple comb teeth occupied by the same antenna port of the terminal device may also change 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 antenna ports of the terminal device that occupy different comb teeth are not antenna ports of the same terminal device. This enables frequency domain interference randomization and further improves the degree of freedom of the frequency domain resources occupied by the antenna ports of the terminal device, thereby further improving the interference randomization effect.

[0025]

[0023] In possible design schemes, 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. This can further improve the degrees of freedom of the frequency-domain resources occupied by the antenna port of the terminal device and further improve the interference randomization effect.

[0026]

[0024] In possible design schemes, the third offset may be a third random number. In other words, the third offset may be a random number.

[0027]

[0025] In possible design schemes, the third random number is:

[0028]

number

[0029]

[0026] In a possible design method, that the first offset is determined based on the cyclic shift value occupied by the first antenna port may include that the first offset is determined based on the range to which the cyclic shift value belongs.

[0030]

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

[0031]

[0028] Also, due to the introduction of the cyclic shift value, the antenna port p of UEx aUEy's antenna port p b The level of interference caused by this can still vary significantly at different transmission times. In this way, a good interference randomization effect can be guaranteed.

[0032]

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

[0033]

[0030] In this way, when the starting position of the frequency domain resources occupied by the antenna ports is determined, a fourth offset is introduced, and as a result, the starting position of the frequency domain resources occupied by each antenna port may change randomly with different frequency hopping periods, and the antenna ports that cause interference to the antenna ports of terminal devices also change randomly, thereby achieving frequency domain interference randomization. This results in a good interference randomization effect, which can further accelerate the interference randomization convergence speed and further improve channel estimation performance.

[0034]

[0031] In possible design schemes, the fourth offset may be a fourth random number. In other words, the fourth offset can be a random number.

[0035]

[0032] In possible design schemes, the fourth random number is:

[0036]

number

[0037]

number

[0038]

number

[0039]

number

[0040]

[0033] According to a second aspect, a communication method is provided. The communication method includes: receiving configuration information; and transmitting a reference signal via M antenna ports based on the configuration information, wherein the configuration information describes the configuration of the reference signal, M is an integer greater than 0, the M antenna ports include at least one first antenna port, the comb teeth occupied by the first antenna port are 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]

[0034] In possible design schemes, the first offset can be determined based on at least the cell identifier and the time-domain resources 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 multiplexed OFDM symbols included in each slot, the number of comb teeth, and the comb tooth offset, wherein the number of comb teeth is the transmission bandwidth m of the reference signal SRS,bhop The number of comb teeth included is the comb tooth offset, and the comb tooth 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: the system frame number corresponding to the first antenna port, the slot number corresponding to the first antenna port, and the OFDM symbol number corresponding to the first antenna port.

[0043]

[0036] In possible design schemes, the first offset may be a first random number.

[0044]

[0037] In a possible design scheme, the first random number is:

[0045]

number

[0046]

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

[0047]

[0039] In possible design schemes, the second offset can be determined based on at least the cell identifier and the time-domain resources occupied by the second antenna port; or the second 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, wherein the number of comb teeth is the transmission bandwidth m of the reference signal SRS,bhop The number of comb teeth included is the comb tooth offset, and the comb tooth 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: the system frame number corresponding to the second antenna port, the slot number corresponding to the second antenna port, and the OFDM symbol number corresponding to the second antenna port.

[0049]

[0041] In possible design schemes, the second offset may be a second random number.

[0050]

[0042] In possible design schemes, the second random number is:

[0051]

number

[0052]

[0043] In possible design schemes, 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.

[0053]

[0044] In possible design schemes, 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]

[0045] In possible design schemes, the third offset may be a third random number.

[0055]

[0046] In possible design schemes, the third random number is:

[0056]

number

[0057]

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

[0058]

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

[0059]

[0049] In possible design schemes, the fourth offset may be a fourth random number.

[0060]

[0050] In possible design schemes, the fourth random number is:

[0061]

number

[0062]

number

[0063]

number

[0064]

number

[0065]

[0051] For the technical effects of the communication method according to the second embodiment, please refer to the technical effects of the method according to any possible implementation of the first embodiment. Details will not be explained again here.

[0066]

[0052] According to a third aspect, a communication method is provided. The communication method includes: transmitting configuration information; and receiving a reference signal via M antenna ports based on the configuration information, wherein the configuration information describes the configuration of the reference signal, and the starting position of the 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 being determined based on at least a cell identifier and an index of the frequency hopping period corresponding to the reference signal.

[0067]

[0053] In possible design schemes, the fourth offset may be a fourth random number.

[0068]

[0054] In a possible design scheme, the fourth random number is:

[0069]

number

[0070]

number

[0071]

number

[0072]

number

[0073]

[0055] For the technical effects of the communication method according to the third embodiment, please refer to the technical effects of the method according to any possible implementation of the first embodiment. Details will not be explained again here.

[0074]

[0056] According to a fourth aspect, a communication method is provided. The communication method includes: receiving configuration information; and transmitting a reference signal via M antenna ports based on the configuration information, wherein the configuration information describes the configuration of the reference signal, and the starting position of the 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 being determined based on at least a cell identifier and an index of the frequency hopping period corresponding to the reference signal.

[0075]

[0057] In possible design schemes, the fourth offset may be a fourth random number.

[0076]

[0058] In possible design schemes, the fourth random number is:

[0077]

number

[0078]

number

[0079]

number

[0080]

number

[0081]

[0059] For the technical effects of the communication method according to the fourth embodiment, please refer to the technical effects of the method according to any possible implementation of the first embodiment. Details will not be explained again here.

[0082]

[0060] According to a fifth aspect, a communication device is provided. The communication device includes a transmitting module and a receiving module, The transmitting module is configured to transmit configuration information, where the configuration information indicates the configuration of the reference signal; and The receiving module is configured to receive a reference signal via M antenna ports based on configuration information, where M is an integer greater than 0, and the M antenna ports include at least one first antenna port, the comb teeth occupied by the first antenna port are 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.

[0083]

[0061] In possible design schemes, the first offset is determined based on at least the cell identifier and the time-domain resources 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 the transmission bandwidth m of the reference signal SRS,bhop The number of comb teeth included is the comb tooth offset, and the comb tooth 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: the system frame number corresponding to the first antenna port, the slot number corresponding to the first antenna port, and the OFDM symbol number corresponding to the first antenna port.

[0085]

[0063] In possible design schemes, the first offset may be a first random number.

[0086]

[0064] In a possible design scheme, the first random number is:

[0087]

number

[0088]

[0065] In a possible design configuration, the M antenna ports may further include at least one second antenna port, the comb teeth occupied by the second antenna port may be determined based on at least a second offset, the second offset being 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, the second offset being different from the first offset.

[0089]

[0066] In possible design schemes, the second offset can be determined based on at least the cell identifier and the time-domain resources occupied by the second antenna port; or the second 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, wherein the number of comb teeth is the transmission bandwidth m of the reference signal SRS,bhop The number of comb teeth included is the comb tooth offset, and the comb tooth offset is the reference number of comb teeth occupied by the reference signal.

[0090]

[0067] In possible design schemes, 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: the system frame number corresponding to the second antenna port, the slot number corresponding to the second antenna port, and the OFDM symbol number corresponding to the second antenna port.

[0091]

[0068] In possible design schemes, the second offset may be a second random number.

[0092]

[0069] In a possible design scheme, the second random number is:

[0093]

number

[0094]

[0070] In possible design schemes, 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.

[0095]

[0071] In possible design schemes, 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]

[0072] In possible design schemes, the third offset may be a third random number.

[0097]

[0073] In possible design schemes, the third random number is:

[0098]

number

[0099]

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

[0100]

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

[0101]

[0076] In possible design schemes, the fourth offset may be a fourth random number.

[0102]

[0077] In possible design schemes, 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 a single 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 embodiment 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 fifth embodiment becomes capable of performing the method according to the first embodiment.

[0109]

[0080] It should be noted that the communication device according to the fifth embodiment may be a network device, or a chip (system) or other component or element that can be placed in a network device. This is not particularly limited in the present application.

[0110]

[0081] For the technical effects of the communication device according to the fifth embodiment, please refer to the technical effects of the method by any possible implementation of the first embodiment. Details will not be explained again here.

[0111]

[0082] According to a sixth aspect, a communication device is provided. The communication device includes a transmitting module and a receiving module, The receiving module is configured to receive configuration information, where the configuration information indicates the configuration of the reference signal; and The transmitting module is configured to transmit a reference signal via M antenna ports based on configuration information, where M is an integer greater than 0, and the M antenna ports include at least one first antenna port, the comb teeth occupied by the first antenna port are 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.

[0112]

[0083] In possible design schemes, the first offset can be determined based on at least the cell identifier and the time-domain resources 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 multiplexed OFDM symbols included in each slot, the number of comb teeth, and the comb tooth offset, wherein the number of comb teeth is the transmission bandwidth m of the reference signal SRS,bhop The number of comb teeth included is the comb tooth offset, and the comb tooth offset is the reference number of comb teeth occupied by the reference signal.

[0113]

[0084] In a possible design configuration, 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: the system frame number corresponding to the first antenna port, the slot number corresponding to the first antenna port, and the OFDM symbol number corresponding to the first antenna port.

[0114]

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

[0115]

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

[0116]

number

[0117]

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

[0118]

[0088] In a possible design method, the second offset can be determined based on at least the cell identifier and the time domain resources occupied by the second antenna port; or the second 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 teeth, and the tooth offset, where the number of teeth is the number of teeth included in the transmission bandwidth m of the reference signal SRS,bhop and the tooth offset is the reference number of teeth occupied by the reference signal.

[0119]

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

[0120]

[0090] In a possible design method, the second offset may be a second random number.

[0121]

[0091] In a possible design method, the second random number is:

[0122]

Number

[0123]

[0092] In a possible design method, the second offset may be the sum of the first offset and the third offset, and the third offset is an integer greater than 0.

[0124]

[0093] In a possible design method, the third offset can be determined based on at least the cell identifier and the 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 teeth, and the tooth offset.

[0125]

[0094] In a possible design method, the third offset may be a third random number.

[0126]

[0095] In a possible design method, the third random number is:

[0127]

Number

[0128]

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

[0129]

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

[0130]

[0098] In possible design schemes, the fourth offset may be a fourth random number.

[0131]

[0099] In possible design schemes, 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 a single 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 embodiment 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 embodiment becomes capable of performing the method according to the second embodiment.

[0138]

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

[0139]

[0103] For the technical effects of the communication device according to the sixth embodiment, please refer to the technical effects of the method by any possible implementation of the second embodiment. Details will not be explained again here.

[0140]

[0104] According to the seventh aspect, a communication device is provided. The communication device includes a transmitting module and a receiving module, The transmitting module is configured to transmit configuration information, where the configuration information indicates the configuration of the reference signal; and The receiving module is configured to receive a reference signal via M antenna ports based on configuration information, where the starting position of the 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 being determined based on at least a cell identifier and the index of the frequency hopping period corresponding to the reference signal.

[0141]

[0105] In possible design schemes, the fourth offset may be a fourth random number.

[0142]

[0106] In the possible design schemes, 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 a single 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 embodiment 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 seventh embodiment becomes capable of performing the method according to the first embodiment.

[0149]

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

[0150]

[0110] For the technical effects of the communication device according to the seventh embodiment, please refer to the technical effects of the method by any possible implementation of the third embodiment. Details will not be explained again here.

[0151]

[0111] According to the eighth aspect, a communication device is provided. The communication device includes a transmitting module and a receiving module, The receiving module is configured to receive configuration information, where the configuration information indicates the configuration of the reference signal; and The transmitting module is configured to transmit a reference signal via M antenna ports based on configuration information, where the starting position of the 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 being determined based on at least a cell identifier and the index of the frequency hopping period corresponding to the reference signal.

[0152]

[0112] In possible design schemes, the fourth offset may be a fourth random number.

[0153]

[0113] In possible design schemes, 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 a single 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 becomes 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 a chip (system) or other component or element that can be placed in a terminal device. This is not particularly limited in the present application.

[0161]

[0117] For the technical effects of the communication device according to the eighth embodiment, please refer to the technical effects of the method by any possible implementation of the fourth embodiment. Details will not be explained again here.

[0162]

[0118] According to the ninth aspect, a communication method is provided. The method includes: transmitting configuration information for a reference signal; and receiving 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, the comb teeth occupied by the first antenna port are determined based on at least a first offset, 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]

[0119] According to a tenth aspect, a communication method is provided. The method includes: receiving configuration information of a reference signal; and transmitting a reference signal through 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, the comb teeth occupied by the first antenna port are determined based on at least a first offset, 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 embodiment, the comb teeth occupied by the first antenna port of the terminal device are determined based on a first offset, and as a result, the comb teeth occupied by the antenna port of the terminal device may change 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 changes randomly. Thus, interference randomization is achieved, and a better interference randomization effect can be achieved.

[0165]

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

[0166]

[0122] Optionally, the first offset is an integer greater than 0.

[0167]

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

[0168]

[0124] In a possible design scheme, the first offset includes a first random number and / or a fifth random number. The first random number is determined based on, at least, the time-domain resources occupied by the first antenna port. The fifth random number is determined based at least on the frequency domain resources occupied by the first antenna port.

[0169]

[0125] In a possible design scheme, the first random number is determined based on at least the time-domain resources occupied by the first antenna port: The first random number is determined based on one of several first correspondences and a time-domain resource occupied by a first antenna port, wherein the first correspondence includes at least one correspondence between a 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 scheme, 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 scheme, one frequency hopping period includes at least one transmission of a reference signal, and the correspondence between at least one first random number and at least one time-domain resource is: The system includes a correspondence between at least one first random number and the relative number of at least one transmission of a reference signal during a frequency hopping period.

[0172]

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

[0173] In a possible design scheme, the first random number is determined based on at least the time-domain resources 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 a pseudo-random sequence.

[0174]

[0129] In a possible design scheme, the first random number has the following parameters: The number of slots included in each system frame, The number of OFDM symbols included in each slot, Number of comb teeth, and Comb tooth offset Further determined based on one or more of the following, the comb tooth quantity 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]

[0130] In possible design schemes, the first random number is:

[0176]

number

[0177]

[0131] In a possible design scheme, the fifth random number is determined based on at least the frequency domain resources occupied by the first antenna port: The fifth random number is determined based on one of several second correspondences and a frequency domain resource occupied by the first antenna port, wherein the second correspondence includes at least one correspondence between the fifth random number and 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]

[0133] In a possible design scheme, the fifth random number is determined based on at least the frequency domain resources occupied by the first antenna port: The fifth random number is determined based on the frequency domain resources occupied by the first antenna port and a pseudo-random sequence.

[0180]

[0134] In possible design schemes, the fifth random number is:

[0181]

number

[0182]

[0135] In a possible design scheme, the time domain resource occupied by the first antenna port includes one or more orthogonal frequency division multiplexed 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: 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 It is determined based on one or more of the following.

[0183]

[0136] In possible design schemes, the index of the 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 a 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 also be defined according to this principle.

[0184]

[0137] In a possible design scheme, the frequency domain resource occupied by the first antenna port includes one or more subbandwidths, and the one or more subbandwidths included in the frequency domain resource occupied by the first antenna port have the following parameters: The index of the frequency hopping bandwidth corresponding to the first antenna port, and Index of transmission bandwidth corresponding to the first antenna port It is determined based on one or more of the following.

[0185]

[0138] In possible design schemes, the index of the frequency-hopping bandwidth in which the frequency domain resource is located is determined based on the frequency domain resource occupied by the first antenna port, or the 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, the granularity of which is b, and the subbands are numbered in ascending order of frequencies including {0,...,a-1}.

[0186]

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

[0187]

[0140] Optionally, the second offset is an integer greater than 0.

[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, the comb teeth occupied by the second antenna port may be determined based on at least a second offset, which may include the possibility that the comb teeth occupied by the second antenna port are determined based on the initial value of the comb teeth occupied by the second antenna port and a second offset.

[0190]

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

[0191]

[0144] In a possible design scheme, the second offset includes a second random number and / or a sixth random number. The second random number is determined based at least on the time-domain resources occupied by the second antenna port. The sixth random number is determined based at least on the frequency domain resources occupied by the second antenna port.

[0192]

[0145] In a possible design scheme, the second random number is determined based on at least the time-domain resources occupied by the second antenna port: The second random number is determined based on one of several third correspondences and a time-domain resource occupied by the second antenna port, wherein the third correspondence includes at least one correspondence between the second random number and at least one time-domain resource.

[0193]

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

[0194]

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

[0195]

[0148] In possible design schemes, the second random number is determined based on at least the time-domain resources occupied by the second antenna port: The second random number is determined based on a time-domain resource occupied by the second antenna port and a pseudo-random sequence.

[0196]

[0149] In a possible design scheme, the second random number has the following parameters: The number of slots included in each system frame, The number of OFDM symbols included in each slot, Number of comb teeth, and Comb tooth offset It is further determined based on one or more of the following: the comb tooth quantity 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.

[0197]

[0150] In possible design schemes, the second random number is:

[0198]

number

[0199]

[0151] In a possible design scheme, the sixth random number is determined based on at least the frequency domain resources occupied by the second antenna port: The sixth random number is determined based on one of several fourth correspondences and a frequency domain resource occupied by the second antenna port, wherein the fourth correspondence includes at least one correspondence between the sixth random number and at least one frequency domain resource.

[0200]

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

[0201]

[0153] In possible design schemes, the sixth random number is:

[0202]

number

[0203]

[0154] In possible design schemes, 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, where the third offset is an integer greater than 0.

[0205]

[0156] In possible design methods, the third offset is a predetermined constant.

[0206]

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

[0207]

[0158] In a possible design scheme, the third offset includes a third random number and / or a seventh random number. The third random number is determined based at least on the time-domain resources occupied by the second antenna port. The seventh random number is determined based at least on the frequency domain resources occupied by the second antenna port.

[0208]

[0159] In possible design schemes, the third random number is determined based on at least the time-domain resources occupied by the second antenna port: 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, wherein the fifth correspondence includes at least one correspondence between the 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 scheme, one frequency hopping period includes at least one transmission of a reference signal, and the correspondence between at least one third random number and at least one time-domain resource is: The system includes a correspondence between at least one third random number and the relative number of at least one transmission of a reference signal during the frequency hopping period.

[0211]

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

[0212]

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

[0213]

[0164] In a possible design scheme, the third random number has the following parameters: The number of slots included in each system frame, The number of OFDM symbols included in each slot, Number of comb teeth, and Comb tooth offset It is further determined based on one or more of the following: the comb tooth quantity 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.

[0214]

[0165] In possible design schemes, the third random number is:

[0215]

number

[0216]

[0166] In a possible design scheme, the seventh random number is determined based on at least the frequency domain resources occupied by the second antenna port: The seventh random number is determined based on one of several sixth correspondences and a frequency domain resource occupied by the second antenna port, wherein the sixth correspondence includes at least one correspondence between the seventh random number and at least one frequency domain resource.

[0217]

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

[0218]

[0168] In a possible design scheme, the seventh random number is:

[0219]

number

[0220]

[0169] In a possible design scheme, 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: 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 It is determined based on one or more of the following.

[0221]

[0170] In a possible design scheme, the frequency domain resource occupied by the second antenna port includes one or more subbandwidths, and the one or more subbandwidths included in the frequency domain resource occupied by the second antenna port have the following parameters: The index of the frequency hopping bandwidth corresponding to the second antenna port, and Index of transmission bandwidth corresponding to the second antenna port It is determined based on one or more of the following.

[0222]

[0171] According to the eleventh aspect, a communication method is provided. The communication method includes: transmitting configuration information of a reference signal; and receiving 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, the 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 is 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 a time domain resource occupied by the first antenna port, the ninth correspondence includes a correspondence between at least one fourth offset and at least one time domain resource, and the plurality of ninth correspondences correspond to the same frequency scaling factor.

[0223]

[0172] According to a twelfth aspect, a communication method is provided. The communication method includes: receiving configuration information of a reference signal; and transmitting 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, the 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 is 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 a time domain resource occupied by the first antenna port, the ninth correspondence includes a correspondence between at least one fourth offset and at least one time domain resource, and the plurality of ninth correspondences correspond to the same frequency scaling factor.

[0224]

[0173] According to the communication method provided in the eleventh or twelfth embodiment, when the starting position of the frequency domain resource occupied by the antenna port is determined, a fourth offset is introduced, so that the starting position of the frequency domain resource occupied by each antenna port may change randomly on different time domain resources, and the antenna ports causing interference to the antenna ports of the terminal device also change randomly, thereby achieving frequency domain interference randomization. This results in 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 set by using upper-layer signaling RRC.

[0226]

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

[0227]

[0177] In possible design schemes, the fourth random number is:

[0228]

number

[0229]

number

[0230]

number

[0231]

number

[0232]

[0178] According to a thirteenth aspect, a communication method is provided. The method includes: transmitting configuration information for a reference signal; and receiving 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, the cyclic shift value of the first antenna port being determined based on at least a first code domain offset, the first code domain offset being determined based on at least the time domain resources and / or frequency domain resources occupied by the first antenna port.

[0233]

[0179] According to a fourteenth aspect, a communication method is provided. The method includes: receiving configuration information of a reference signal; and transmitting a reference signal through 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, the cyclic shift value of the first antenna port is determined based on at least a first code domain offset, the first code domain offset is determined based on at least the time domain resources and / or frequency domain resources occupied by the first antenna port.

[0234]

[0180] According to the communication method provided in the 13th or 14th aspect, the cyclic shift value of the first antenna port of the terminal device is determined based on a first code domain offset, and as a result, the cyclic shift value of the antenna port of the terminal device may change 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 changes randomly. Thus, interference randomization is achieved, and a better interference randomization effect can be achieved.

[0235]

[0181] Optionally, the cyclic shift value of the first antenna port may be determined based on at least a first code domain offset, which may include the cyclic shift value of the first antenna port being determined based on an initial value of the cyclic shift value of the first antenna port and a first code domain offset.

[0236]

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

[0237]

[0183] In a possible design scheme, 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, the time-domain resources occupied by the first antenna port. The second code-domain random number is determined based at least on the frequency domain resources occupied by the first antenna port.

[0238]

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

[0239]

[0185] In possible design schemes, each of the multiple seventh correspondences contains 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 contained 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 scheme, one frequency hopping period includes at least one transmission of a reference signal, and the correspondence between at least one first code-domain random number and at least one time-domain resource is: The system includes a correspondence between at least one first code-domain random number and the relative number of at least one transmission of a reference signal during a frequency-hopping period.

[0241]

[0187] In a possible design scheme, the correspondence between at least one first code-domain random number and at least one time-domain resource is: It includes a correspondence between at least one first code-domain random number and at least one frequency-hopping period index.

[0242]

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

[0243]

[0189] In a possible design scheme, the first code-domain random number has the following parameters: The number of slots included in each system frame, The number of OFDM symbols included in each slot, Number of comb teeth, and Comb tooth offset Further determined based on one or more of the following, the comb tooth quantity 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]

[0190] In a possible design scheme, the first code-domain random number is:

[0245]

number

[0246]

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

[0247]

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

[0248]

[0193] In possible design schemes, the second code-domain random number is:

[0249]

number

[0250]

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

[0251]

[0195] In possible design schemes, the value of the cyclic shift value satisfies α ∈ {0, 1, ..., K × Y - 1}, where Y is the maximum number of antenna ports n that are multiplexed via cyclic shift in one comb tooth. CS,max SRS , or the number of cyclic shift values ​​that can be set by using higher layer parameters in one comb tooth, where 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 value of the cyclic shift satisfies α ∈ {0, 1, ..., Y-1}, where Y is the number of Fourier transform points M, M=2 x Here, 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 value of the cyclic shift value satisfies 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 scheme, the time domain resource occupied by the first antenna port includes one or more orthogonal frequency division multiplexed 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: 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 It is determined based on one or more of the following.

[0255]

[0197] In a possible design scheme, the frequency domain resource occupied by the first antenna port includes one or more subbandwidths, and the one or more subbandwidths included in the frequency domain resource occupied by the first antenna port have the following parameters: The index of the frequency hopping bandwidth corresponding to the first antenna port, and Index of transmission bandwidth corresponding to the first antenna port It is determined based on one or more of the following.

[0256]

[0198] In a possible design, the M antenna ports further include at least one second antenna port, the cyclic shift value of the second antenna port is determined based on at least a second code domain offset, the second code domain offset is determined based on at least the time domain resources and / or frequency domain resources 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 in at least one time-domain resource and / or frequency-domain resource, the first code-domain offset of the first antenna port is different from the second code-domain offset of the second antenna port. For example, in the first time-domain resource and the second time-domain resource, the interval between the cyclic shift values ​​of the first antenna port and the second antenna port is different. Alternatively, in the first frequency-domain resource and the second frequency-domain resource, the interval between the cyclic shift values ​​of the first antenna port and the second antenna port is different.

[0258]

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

[0259]

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

[0260]

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

[0261]

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

[0262]

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

[0263]

[0205] In a possible design scheme, the third code-domain random number has the following parameters: The number of slots included in each system frame, The number of OFDM symbols included in each slot, Number of comb teeth, and Comb tooth offset It is further determined based on one or more of the following: the comb tooth quantity 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.

[0264]

[0206] In a possible design scheme, the fourth code-domain random number is determined based on at least the frequency domain resources occupied by the second antenna port: The fourth code-domain random number is determined based on one of a plurality of 18 correspondences and a frequency-domain resource occupied by the second antenna port, and one of the 18 correspondences includes at least one correspondence between a sixth random number and at least one frequency-domain resource.

[0265]

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

[0266]

[0208] According to the 15th aspect, a communication device is provided. The communication device includes a transmitting module and a receiving module, The transmitting module is configured to transmit the configuration information of the reference signal; and The receiving module is configured to receive a reference signal via M antenna ports based on 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, the first offset is determined based on at least the time-domain resources and / or frequency-domain resources occupied by the first antenna port.

[0267]

[0209] It should be noted that all relevant details of the steps in any possible implementation of the ninth aspect can be referenced in the functional description of the corresponding functional module. Further details are not provided here.

[0268]

[0210] It should be noted that the receiving module and the transmitting module may be arranged separately or may be integrated into a single 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 15th embodiment 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 15th embodiment becomes capable of performing any possible implementation of the 9th embodiment.

[0270]

[0212] It should be noted that the communication device according to the 15th embodiment may be a network device, or a chip (system) or other component or element that can be placed in a network device. This is not particularly limited in the present application.

[0271]

[0213] For the technical effects of the communication device according to the 15th embodiment, please refer to the technical effects of the method by any possible implementation of the 9th embodiment. Details will not be explained again here.

[0272]

[0214] According to the 16th aspect, a communication device is provided. The communication device includes a transmitting module and a receiving module, The receiving module is configured to receive configuration information for the reference signal; and, The transmitting module is configured to transmit a reference signal via M antenna ports based on 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, the first offset is determined based on at least the time-domain resources and / or frequency-domain resources occupied by the first antenna port.

[0273]

[0215] It should be noted that all relevant details of the steps in any possible implementation of the tenth aspect can be referenced in the functional description of the corresponding functional module. Further details are not provided here.

[0274]

[0216] It should be noted that the receiving module and the transmitting module may be arranged separately or may be integrated into a single 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 16th embodiment 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 16th embodiment becomes capable of performing any possible implementation of the 10th embodiment.

[0276]

[0218] It should be noted that the communication device according to the 16th aspect may be a terminal device, or a chip (system) or other component or element that can be placed in a terminal device. This is not particularly limited in the present application.

[0277]

[0219] For the technical effects of the communication device according to the 16th embodiment, please refer to the technical effects of the method by any possible implementation of the 10th embodiment. Details will not be explained again here.

[0278]

[0220] According to the 17th aspect, a communication device is provided. The communication device includes a transmitting module and a receiving module, The transmitting module is configured to transmit the configuration information of the reference signal; and The receiving module is configured to receive a reference signal via M antenna ports based on configuration information, where M is an integer greater than 0, and the M antenna ports include at least one first antenna port, and the starting position of the frequency domain resource occupied by the first antenna port is determined based on at least a fourth offset, where the fourth offset is 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, where the ninth correspondence includes at least one correspondence between the fourth offset and at least one time domain resource, and the plurality of ninth correspondences correspond to the same frequency scaling factor.

[0279]

[0221] It should be noted that all relevant details of the steps in any possible implementation of the eleventh aspect can be referenced in the functional description of the corresponding functional module. Further details are not provided here.

[0280]

[0222] It should be noted that the receiving module and the transmitting module may be arranged separately or may be integrated into a single 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 17th embodiment 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 17th embodiment becomes capable of performing any possible implementation of the 11th embodiment.

[0282]

[0224] It should be noted that the communication device according to the 17th embodiment may be a network device, or a chip (system) or other component or element that can be placed in a network device. This is not particularly limited in the present application.

[0283]

[0225] For the technical effects of the communication device according to the 17th embodiment, please refer to the technical effects of the method by any possible implementation of the 11th embodiment. Details will not be explained again here.

[0284]

[0226] According to the 18th aspect, a communication device is provided. The communication device includes a transmitting module and a receiving module, The receiving module is configured to receive configuration information for the reference signal; and The transmitting module is configured to transmit a reference signal via M antenna ports based on configuration information, where M is an integer greater than 0, and the M antenna ports include at least one first antenna port, and the starting position of the frequency domain resource occupied by the first antenna port is determined based on at least a fourth offset, where the fourth offset is 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, where the ninth correspondence includes at least one correspondence between the fourth offset and at least one time domain resource, and the plurality of ninth correspondences correspond to the same frequency scaling factor.

[0285]

[0227] It should be noted that all relevant details of the steps in any possible implementation of the twelfth aspect can be referenced in the functional description of the corresponding functional module. Further details are not provided here.

[0286]

[0228] It should be noted that the receiving module and the transmitting module may be arranged separately or may be integrated into a single 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 18th 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 18th aspect becomes capable of performing any possible implementation of the 12th aspect.

[0288]

[0230] It should be noted that the communication device according to the 18th aspect may be a terminal device, or a chip (system) or other component or element that can be placed in a terminal device. This is not particularly limited in the present application.

[0289]

[0231] For the technical effects of the communication device according to the 18th embodiment, please refer to the technical effects of the method by any possible implementation of the 12th embodiment. Details will not be explained again here.

[0290]

[0232] According to the 19th aspect, a communication device is provided. The communication device includes a transmitting module and a receiving module, The transmitting module is configured to transmit the configuration information of the reference signal; and The receiving module is configured to receive a reference signal via M antenna ports based on configuration information, where M is an integer greater than 0, and the M antenna ports include at least one first antenna port, the cyclic shift value of the first antenna port is determined based on at least a first code domain offset, the first code domain offset is determined based on at least the time domain resources and / or frequency domain resources occupied by the first antenna port.

[0291] It should be noted that all relevant details of the steps in any possible implementation of the 13th aspect can be referenced in the functional description of the corresponding functional module. Further details are not provided here.

[0292]

[0233] It should be noted that the receiving module and the transmitting module may be arranged separately or may be integrated into a single 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 embodiment 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 embodiment becomes capable of performing any possible implementation of the 13th embodiment.

[0294]

[0235] It should be noted that the communication device according to the 19th embodiment may be a network device, or a chip (system) or other component or element that can be placed in a network device. This is not particularly limited in the present application.

[0295]

[0231] For the technical effects of the communication device according to the 19th embodiment, please refer to the technical effects of the method by any possible implementation of the 13th embodiment. Details will not be explained again here.

[0296]

[0237] According to the 20th aspect, a communication device is provided. The communication device includes a transmitting module and a receiving module, The receiving module is configured to receive configuration information for the reference signal; and The transmitting module is configured to transmit a reference signal via M antenna ports based on configuration information, where M is an integer greater than 0, and the M antenna ports include at least one first antenna port, the cyclic shift value of the first antenna port is determined based on at least a first code domain offset, the first code domain offset is determined based on at least the time domain resources and / or frequency domain resources occupied by the first antenna port.

[0297]

[0238] It should be noted that all relevant details of the steps in any possible implementation of the 14th aspect can be referenced in the functional description of the corresponding functional module. Further details are not provided here.

[0298]

[0239] It should be noted that the receiving module and the transmitting module may be arranged separately or may be integrated into a single 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 embodiment 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 embodiment becomes capable of performing any possible implementation of the 14th embodiment.

[0300]

[0241] It should be noted that the communication device according to the 20th embodiment may be a terminal device, or a chip (system) or other component or element that can be placed in a terminal device. This is not particularly limited in the present application.

[0301]

[0242] For the technical effects of the communication device according to the 20th embodiment, please refer to the technical effects of the methods by any possible implementation of the 14th embodiment. Details will not be explained again here.

[0302]

[0243] According to the 21st aspect, a communication device is provided. The communication device includes a processor. The processor is coupled to memory, and the memory is configured to store computer programs.

[0303]

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

[0304]

[0245] In possible designs, the communication device according to the 20th 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 may be configured to implement a receiving function relating to any possible implementation of the first to fourth or 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 or ninth to fourteenth aspects.

[0306]

[0247] In this application, the communication device according to the 20th embodiment may be a terminal device or a network device, or a chip or chip system located inside a terminal device or network device.

[0307]

[0248] For the technical effects of the communication device relating to the 20th embodiment, please refer to the technical effects of the communication method implemented in any of the first to fourth embodiments or the ninth to fourteenth embodiments. Further details will not be explained here.

[0308]

[0249] According to the 21st aspect, a communication system is provided. 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 includes a communication device according to the fifth embodiment configured to carry out the method according to the first embodiment, and a communication device according to the sixth embodiment configured to carry out the method according to the second embodiment. Alternatively, the communication system includes a communication device according to the seventh embodiment configured to carry out the method according to the third embodiment, and a communication device according to the eighth embodiment configured to carry out the method according to the fourth embodiment.

[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 embodiment and a communication device according to the 18th embodiment, and further include a communication device according to the 19th embodiment and a communication device according to the 20th embodiment.

[0312]

[0253] According to the 22nd aspect, a chip system is provided. The chip system includes logic circuits and input / output ports. The logic circuits are configured to perform processing functions relating to any possible implementation of the first to fourth aspects or the 9th to fourteenth aspects, and the input / output ports are configured to perform transmitting and receiving functions relating to any possible implementation of the first to fourth aspects or the 9th to fourteenth aspects. Specifically, the input port can be configured to implement a receiving function relating to any possible implementation of the first to fourth or ninth to fourteenth aspects, and the output port can be configured to implement a transmitting function relating to any possible implementation of the first to fourth or ninth to fourteenth aspects.

[0313]

[0254] In possible designs, the chip system further includes memory. The memory is configured to store program instructions and data for performing functions in any possible implementation of the first through fourth embodiments or the ninth through fourteenth embodiments.

[0314]

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

[0315]

[0256] According to the 23rd aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program or instruction. When an instruction is executed on the computer or a computer program is executed, a communication method is performed in any possible implementation of the first to fourth aspects or the 9th to 14th aspects.

[0316]

[0257] According to the 24th aspect, a computer program product is provided. The computer program product includes a computer program or instructions. When an instruction is executed on a computer or a computer program is executed, a communication method is performed in any possible implementation of the first to fourth aspects or the 9th to fourteenth aspects. [Brief explanation of the drawing]

[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 the transmission bandwidth according to the embodiment of the present application. [Figure 3]

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

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

[0262] Figure 5 is a schematic flowchart of the communication method according to the 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 yet another application diagram 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 yet another application diagram 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 diagram showing the configuration of a communication device according to an embodiment of the present application. [Figure 17]

[0274] Figure 17 is a diagram showing the configuration of another communication device according to an embodiment of the present application. [Modes for carrying out the invention]

[0318]

[0275] The technical solution in this application will be explained below with reference to the attached drawings.

[0319]

[0276] The technical solutions in the embodiments of this application can be applied to various communication systems, such as fourth-generation (4G) mobile communication systems like 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, the Internet of Things (Internet) for vehicle communication systems, long-term evolution (LTE) systems, or worldwide interoperability for microwave access (WiMAX) communication systems, fifth-generation (5G) mobile communication systems like new radio (NR) systems, and future communication systems like sixth-generation (6G) mobile communication systems.

[0320]

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

[0321]

[0278] All aspects, embodiments, or features presented in this application are described by describing systems that may include multiple devices, components, modules, etc. It should be recognized 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 relation to the accompanying drawings. Furthermore, it is possible to use combinations of solutions.

[0322]

[0279] Furthermore, in the embodiments of this application, terms such as “example” or “for example” are used to express that an example, illustration, or explanation is being given. No embodiment or design solution described as an “example” in this application should be described as being preferable 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 this application, “of,” “corresponding,” and “corresponding” may often be used interchangeably. It should be noted that the meanings expressed 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 this application are intended to more clearly illustrate the technical solutions in the embodiments of this application and do not constitute any limitation to the technical solutions provided in the embodiments of this application. Those skilled in the art will be able to see that, with the evolution of network architectures and the emergence of new service scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0325]

[0282] To facilitate understanding of the embodiments of this application, a communication system applicable to the embodiments of this application will first be described in detail 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 this application can be applied.

[0326]

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

[0327]

[0284] A terminal device is a terminal that accesses a communication system and has wireless transmission and reception functions, or a chip or chip system that can be placed in a terminal. A terminal device may also be referred to as user equipment (UE), user equipment, 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 equipment.

[0328]

[0285] For example, the terminal device in the embodiment 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 care, 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 functionality. The access terminal may be a cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication capabilities (handset), computing device or other processing device connected to a wireless modem, wearable device, or similar.

[0329]

[0286] As another example, the terminal device in the embodiments of the present application may be a rapid delivery terminal in intelligent logistics (e.g., a device capable of monitoring the location of a cargo vehicle, 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 relevant data on poultry and livestock), a wireless terminal in intelligent architecture (e.g., a smart elevator, a fire monitoring device, or a smart measuring instrument), a wireless terminal in intelligent healthcare (e.g., a wearable device capable of monitoring the physiological state of a person or animal), a wireless terminal in intelligent transport (e.g., an intelligent bus, an intelligent vehicle, a shared bike, a charge level monitoring device, an intelligent traffic signal 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 yet another example, the terminal device in the present application may be a vehicle-mounted module, a vehicle-mounted assembly, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit, which is incorporated into a vehicle as one or more components or units. A vehicle can implement the method provided in this application via a vehicle-mounted module, vehicle-mounted assembly, vehicle-mounted component, vehicle-mounted chip, or vehicle-mounted unit 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 functions, or a chip or chip system that can be placed inside a device. Network devices include, but are not limited to, access points (APs) in a wireless fidelity (Wi-Fi) system, such as home gateways, routers, servers, switches, bridges, evolved node B (eNB), radio network controllers (RNC), node B (NB), base station controllers (BSC), base transceiver stations (BTS), home base stations (e.g., home evolved node B, or home node B, HNB), baseband units (BBUs), radio relay nodes, radio backhaul nodes, transmission points (TRP; or transmission point, TP), or remote radio heads (RRH). The network device may alternatively be a gNB or transmit point (TRP or TP) in a 5G system, such as a new radio (NR) system, or one antenna panel or group of antenna panels (including multiple antenna panels) of a gNB in ​​a 5G system. The network device may also alternatively be a network node such as a baseband unit (BBU), distributed unit (DU), or roadside unit (RSU) with base station functionality that constitutes the gNB or transmit point.

[0331]

[0288] It should be noted that the signal processing method provided in the embodiments of this application is applicable to any two nodes shown in Figure 1. For specific implementations, please refer to the embodiments of the method described below. Further details are not provided hereupon.

[0332]

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

[0333]

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

[0334]

[0291] In order to further clarify the embodiments of this application, several contents and concepts related to the embodiments of this application will be consistently described below.

[0292] 1. Configuration Information:

[0293] In the example where the reference signal is an SRS, the configuration information may be referred to as SRS resource configuration information. The reference signals to which the methods provided in embodiments of this application can be applied include, but are not limited to, SRS and demodulation reference signals (DMRS). In this application, an SRS is used as an example for illustrative purposes.

[0335]

[0294] For example, SRS resource configuration information can indicate an SRS resource configuration and may be quasi-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 of at least one antenna port (for example, an antenna port for transmitting SRS may be referred to as an SRS port).

[0337]

[0296] For example, SRS resource configuration information includes one or more of the following: N ap SRS ∈{1,2,4} antenna ports

[0338]

number

[0339]

[0297] Optionally, SRS can be transmitted between the antenna port of a terminal device and the antenna port of a network device on the corresponding resources, 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 the reference signal port.

[0299] Second, repetition coefficient, sounding bandwidth, frequency hopping bandwidth, transmission bandwidth, frequency hopping period, and frequency scaling coefficient P F :

[0300] The iteration coefficient R ∈ {1, 2, 4} is set quasi-statically by the network device using a higher-layer parameter (e.g., repetitionFactor). One reference signal transmission corresponds to R consecutive OFDM symbols in 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 in the reference signal resource can be divided exactly 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 the bandwidth range corresponding to the channels acquired by the network device after the reference signal has been 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 the 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 a protocol predefined table.

[0346]

[0306] Frequency scaling coefficient P FIf not set, the transmission bandwidth is equal to the frequency hopping bandwidth. Network devices use the frequency scaling factor P. F When this is set using upper layer parameters, the transmission bandwidth is P of the frequency hopping bandwidth. F This is the proportion.

[0347]

[0307] Figure 2 is a diagram of the transmission bandwidth according to the 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), one RB containing 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 coefficient P F If not configured, the transmission bandwidth is 4 RB (shaded box in Figure 2(a)). As shown in Figure 2(b), the frequency scaling factor P F When =2 is set, the transmission bandwidth is 2 RB (shaded box shown in Figure 2(b)).

[0349]

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

[0310] Third, cyclic shift value:

[0311] For example, the reference signal is sequence I u,v (α,δ) (n) may be used to generate the sequence I u,v (α,δ) (n) is the base sequence.

[0350]

number

[0351]

[0312] 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]

[0314] As an option, Base Sequence I - u,v This may also be a sequence generated using the ZC (Zadoff-Chu) sequence.

[0355]

[0315] For example, Base Sequence I - u,vThis is either a ZC sequence, or a sequence generated by intercepting or extending a ZC sequence using cyclic shift.

[0356]

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

[0357]

[0317] For example, a ZC sequence of length N may be expressed as follows:

[0318]

[0358]

number

[0359]

[0319] In some embodiments, the antenna port p i Compatible with Cyclic Shift α i The following equation (1) is satisfied:

[0360]

number

[0320] In the above equation (1), n SRS cs,i This can also be expressed as the following formula:

[0361]

number

[0362]

number

[0363]

[0321] As an option, the maximum cyclic shift value n SRS cs,max The delayed domain is n SRS cs,max It is possible to show that it is divided equally into individual parts, or that the phase value 2π is n SRS cs,max It is possible to show that the individual parts are divided equally, and each cyclic shift value corresponds to the starting point of each part.

[0364]

[0322] For example, the maximum cyclic shift value n SRS cs,max The number of comb teeth K TC It is possible to correspond to the value of K. As shown in Table 1, TC If = 2, then n SRS cs,max = 8 K TC If = 1, n SRS cs,max = 3 K TC If = 1, n SRS cs,max = 12 K TCIf n = 8, SRS cs,max = 6

[0365] Table 1

[0366] [Table 1]

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

[0324] For example, a frequency domain resource can be divided into multiple comb-type frequency domain resource groups, and one comb-type 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. This is not limited to the present application.

[0369]

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

[0370]

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

[0371]

[0329] Optionally, the number of comb teeth may be set quasi-statically by the network device using higher-layer parameters.

[0372]

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

[0373]

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

[0374]

[0332] In some embodiments, antenna port p i The index k of the comb teeth occupied by TC (pi) This satisfies equation (2) below:

[0375]

number

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

[0376]

[0334] As an option, comb tooth offset k - TC This may be configured by the network device using higher-layer parameters (e.g., transmissionComb).

[0335] 5th, Partial Sounding Offset n offset RPFS :

[0336] In some embodiments, antenna port p i k0 of the frequency domain start position(pi) The following equation (3) may also be satisfied:

[0377]

number

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

[0378]

number

[0379]

[0338] In the above equation (3), n offset FH This represents the frequency hopping offset.

[0380]

[0339] In the above equation (3), n offset RPFS This represents a partial sounding offset, and the partial sounding offset n offset RPFS The following equation (4) is satisfied:

[0381]

number

[0340] In the above equation (4), N sc RB This is the number of subcarriers contained in each resource block; m SRS,BSRS This represents the frequency hopping bandwidth, m SRS,BSRS This is the upper layer parameter B SRS and C SRSand the frequency hopping bandwidth determined based on the protocol predefined table; k F k is the index of the partial sounding start position. F ∈{0,1,...,P F -1} and; k hop This represents the starting resource block hopping offset; P F This represents the frequency scaling factor.

[0382]

[0341] Optionally, the partial sounding start position may be set quasi-statically by the network device using a higher-layer parameter (e.g., startRBIndexFScaling-r17).

[0383]

[0342] In some embodiments, the starting resource block hopping offset k hop This is defined by the following equation (5) and Table 2. For example, k - hop The value of k is determined by the following formula (5), hop is k - hop And determined based on Table 2.

[0384]

number

[0343] In the above equation (5),

[0385]

number

[0386]

number

[0387]

number

[0388]

[0344] In the above equation (5),

[0389]

number

[0390]

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

[0391]

[0346] As an option, N b’ This is the upper layer parameter B SRS and C SRS This may be determined based on the protocol predefined table, where N bhop = 1

[0392] Table 2

[0393] [Table 2]

[0347] The following examples related to the protocol predefined table are used in C SRS ,B SRS ,b hop ,N b’ Explain.

[0394]

[0348] Table 3 is a protocol predefined table. Network devices use higher layer parameters to enable C SRS =12,B SRS =3,b hop Assuming that = 1 is set quasi-statically, network devices and terminal devices are rows with row index 12 and column index B in Table 3. SRS The column where =1 (i.e., B SRS =b hop By using ), the transmission bandwidth of the reference signal is m SRS,bhop It was determined that =16 RB; also, in Table 3, the row index is 12 and the column index is B SRS The column where =3 (i.e., B SRS =B SRS By using ), the transmission bandwidth of the reference signal is m SRS,BSRS It can be determined that = 4 RB. In this setting, frequency hopping starts from the first layer and ends at the third layer, which means b hop =1 and B SRS This can be determined from =3. In this case, the number of reference signal transmissions included in one reference signal frequency hopping period is 2*2=4, which is the product 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 the reference signal frequency hopping period, the starting frequency hopping layer index b hop The number of parallel branches in the corresponding layer N bhopIt should be noted that this will be further considered. However, the limit N of the equation bhop Due to =1, N was obtained based on the table. bhop The value of N does not cause a change in the number of reference signal transmissions included in one reference signal frequency hopping period. bhop The reason for specifying =1 is that when calculating the number of reference signal transmissions included in the reference signal frequency hopping period, it is necessary that only the number of parallel branches in the layers after the starting frequency hopping layer be calculated.

[0396] Table 3

[0397] [Table 3] TIFF0007854070000076.tif248170 TIFF0007854070000077.tif225170

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

[0398]

[0351] 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 follows:

[0399]

number

[0352] A network device can assign sequences to different terminal devices that are obtained based on the same base sequence and different cyclic shift values, and these different terminal devices can transmit a reference signal 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 devices and the network device is flat within the range of the sequence length, no interference will occur between the terminal devices.

[0400]

[0353] Sequences acquired based on different base sequences (whether the same or different cyclic shift values ​​are used) are not orthogonal to each other, and terminal devices may transmit reference signals generated using these sequences (sequences acquired based on different base sequences) on the same time-frequency resources. Interference occurs if the channel between the terminal device and the network device is flat within the range of the sequence length.

[0401]

[0354] For example, let's assume that cell 1 contains UE1 and UE2, cell 2 contains UE3 and UE4, UE1 generates a reference signal using base sequence r1 and cyclic shift value α1 and transmits the reference signal, UE2 generates a reference signal using base sequence r1 and cyclic shift value α2 and transmits the reference signal, UE3 generates a reference signal using base sequence r2 and cyclic shift value α3 and transmits the reference signal, and UE4 generates a reference signal using base sequence r2 and 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 be transmitting a reference signal on the same time-frequency resource. The channel between UE1 to UE4 and the network device is assumed to be flat over M subcarriers occupied by the reference signal, which are h1, h2, h3, and h4, respectively. On the m-th subcarrier of the M subcarriers occupied by the reference signal, the received signal y(m) from the network device is as follows:

[0404]

number

[0356] The network device receives the signal y(m) and the sequence r1(m)e used by UE1. jα1m The following operation can be performed on the following to obtain the channel h1 of UE1:

[0405]

number

[0357]

[0406]

number

[0407]

number

[0408]

[0358] Thus, when reference signals are transmitted over the same time-frequency resources, 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]

[0359] In some embodiments, the antenna port p i The index k of the comb teeth occupied by TC (pi) The above equation (2) is satisfied. Antenna port p i The index k of the comb teeth occupied by TC (pi) If obtained according to equation (2), then the upper layer parameters (e.g., comb tooth offset k) - TC and the number of comb teeth K TC If the ) remains unchanged, it can be seen that the comb teeth occupied by each antenna port are constant at different transmission times, and that each antenna port is always 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 contains UE1, UE2, UE3, and UE4, and each UE contains four antenna ports (for example, 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 the base sequence r1 and the cyclic shift value corresponding to each antenna port, and at least the cyclic shift values ​​or the comb teeth occupied by the antenna ports of UE1, UE2, UE3, and UE4 are different. For example, the comb teeth occupied are different, and / or the cyclic shift values ​​used are different.

[0411] Cell 2 contains UE5, UE6, UE7, and UE8, each UE containing four antenna ports (for example, antenna port p0, antenna port p1, antenna port p2, and antenna port p3, respectively). Each antenna port of UE5, UE6, UE7, and UE8 generates a reference signal using the base sequence r2 and the 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, and differently filled boxes represent different comb teeth, with comb tooth quantity K. TC = 4. Antenna ports of UEs within the same cell generate a reference signal by using the same base sequence and different cyclic shift values. Therefore, they generate and transmit a reference signal by using the same base sequence and occupying different comb teeth, or by using the same base sequence and different cyclic shift values ​​and occupying different comb teeth. Consequently, antenna ports of UEs within the same cell are orthogonal to each other, and there is no interference between antenna ports of UEs within the same cell.

[0413]

[0361] It should be noted that the methods provided in this application are merely illustrated by using Scenario 1 as an example in this application. The applicable scenarios are not limited in this application, and are not limited to the number of cells, the number of UEs contained in the cells, the number of antenna ports contained in each UE, the number of comb teeth, and so on.

[0414] Table 5

[0415] [Table 5]

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

[0416]

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

[0417]

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

[0418]

[0365] It should be noted that the comb tooth index may also be referred to as the comb tooth number. This is not limited to the present application.

[0419]

[0366] In this way, at some point in 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 signal by using the same comb teeth, and the reference signal is 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 this application, the transmission time is the time when the reference signal is transmitted.

[0421]

[0368] However, at any given transmission point, the number of teeth occupied by each antenna port of each UE is constant, as shown in Table 5 and Figure 4. This causes one UE's antenna port to be interfered with by the same antenna port of the same UE at some point in time. Referring to Table 5 and Figure 4, UE1's antenna port is interfered with by UE5's and UE6's antenna ports at some point in time. Specifically, UE1's antenna ports p0 and p2 are interfered with by UE5's antenna ports p0 and p2, and UE6's antenna ports p0 and p2, at some point in time in time. The same applies to the other UEs, and the details will not be explained one by one. Thus, interference occurs in a specific pattern between multiple reference signal transmissions. This does not lead to interference randomization and does not result in channel estimation.

[0422]

[0369] The communication method provided in the embodiments of this application will be described in detail below with reference to Figures 5 to 12. The operations, terminology, etc., in the embodiments of this application may be referenced to one another, but are not limited to this. The object names, parameter names, etc., in the embodiments of this application are merely examples, and other names may be used instead in a particular implementation, but are not limited to this.

[0423]

[0370] For example, Figure 5 is a schematic flowchart of the communication method according to the 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 transmits configuration information. In response, a terminal device receives the configuration information.

[0426]

[0373] For example, 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] For specific implementation details of the configuration information as an option, please refer to the explanation in "First Configuration Information". Details will not be explained again here.

[0429]

[0376] S502: A terminal device transmits a reference signal via M antenna ports based on configuration information. In response, a network device receives the reference signal via M antenna ports based on configuration information.

[0430]

[0377] For example, M is an integer greater than 0.

[0431]

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

[0432]

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

[0433]

[0380] For example, the first antenna port may be any antenna port of the terminal device. For example, referring to Scenario 1 above, the terminal device is UE1, and the first antenna port may be any one of antenna ports p0 to p3 of UE1.

[0434]

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

[0435]

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

[0436]

[0383] For example, the first offset can be a non-negative integer.

[0437]

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

[0438]

[0385] As an option, the number of comb teeth is the transmission bandwidth m of the reference signal. SRS,bhop It may also be the number of comb teeth included.

[0439]

[0386] Optionally, the comb tooth 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 the cell identifier and the time-domain resources occupied by the first antenna port, or the first offset may be determined based on the cyclic shift value occupied by the first antenna port.

[0441]

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

[0442]

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

[0443]

[0390] For example, a pseudo-random sequence may be c().

[0444]

[0391] For example, a pseudo-random 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 a first configuration parameter.

[0448]

[0393] For example, the first configuration parameter may be a configuration parameter delivered by a network device to terminal devices in a serving cell, and the first configuration parameter is N in the range of 0 to 65536. SRS ID That's fine.

[0449]

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

[0450]

[0395] In a possible design method, the first offset is determined based on at least the cell identifier and the time-domain resources occupied by the first antenna port, and the first offset is determined by the following parameters: The number of slots included in each system frame, The number of orthogonal frequency division multiplexed OFDM symbols included in each slot, Number of comb teeth, and Comb tooth offset Further decisions can be made based on one or more of the following.

[0451]

[0396] Optionally, the time domain resources occupied by the first antenna port may include one or more OFDM symbols. One or more OFDM symbols include the following parameters: 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 It is determined based on one or more of the following.

[0452]

[0397] In other words, the number of OFDM symbols included in the time domain resources 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 the terminal device belong to the same reference signal resource, 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 or may not 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 may be 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

[0403] In equations (6), (7), (8), or (9), Q1 represents the first offset or the first random number (Q1 may also represent the first offset; if the first offset is the first random number, Q1 may also represent the first random number); the mathematical symbol Σ represents the summation; c() is a pseudorandom sequence, and the pseudorandom sequence is associated with a cell identifier; n f represents the system frame number corresponding to the first antenna port; Nslot frame This represents the number of slots included in each system frame; N symb slot n represents the quantity of OFDM symbols contained in each slot; s,f μ l0 represents the slot number corresponding to the first antenna port; l0 + l' represents the OFDM symbol number corresponding to the first antenna port, where l0 is 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, and l' is 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; the mathematical symbol mod represents the modulo operation.

[0459]

[0404] It should be noted that m in equations (6), (7), (8), or (9) is independent of the sequence length M. In equations (6), (7), (8), or (9), examples where m is an integer between 0 and 7 are used for illustrative purposes, and the range of values ​​for m in equations (6), (7), (8), or (9) is not limited in this application.

[0460]

[0405] In this application, the comb teeth occupied by the first antenna port of the terminal device are determined based on a first offset, and as a result, the frequency domain resources (comb teeth) occupied by the terminal device can change randomly at different transmission times. In this way, the terminal devices causing interference to the terminal device change randomly. Thus, frequency domain interference randomization is achieved, 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)The following equation may be satisfied, which is determined based on the number of comb teeth, the comb tooth offset, and the first offset:

[0462]

number

[0463]

[0407] For example, the antenna port of a terminal device i The index k of the comb teeth occupied by TC (pi) The following equation (10) may satisfy the number of comb teeth, the comb tooth offset, and the first offset, which are determined based on these:

[0464]

number

[0408] Similar to equation (2) above, in equation (10), k - TC represents the comb tooth offset, 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 so, antenna port p i The index k of the comb teeth occupied by TC (pi) The number of comb teeth, the comb tooth offset, and the first offset, which are determined based on these, can be expressed as follows:

[0466]

number

[0467]

number

[0410] Referring to Table 6 and Figure 6, the comb teeth occupied by the antenna ports of each terminal device will be described below, after the comb teeth occupied by the first antenna port have been determined based on at least the first offset.

[0468]

[0411] Scenario 1 above 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 a 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 teeth 1 and 3, and the antenna ports of UE3, UE4, UE7, and UE8 occupy the same comb teeth 2 and 4. UE1 is used as an example. The antenna port of UE1 is subjected to interference from the antenna ports of UE5 and UE6 on comb teeth 1 and 3.

[0470]

[0413] Table 6 and Figure 6 use an example where each UE's antenna port p0 and antenna port p2 occupy one comb tooth, and each UE's antenna port p1 and antenna port p3 occupy one comb tooth. For example, the comb tooth occupied by antenna ports 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 ports 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 the UE, the corresponding base sequence, and the corresponding comb tooth, but do not show the antenna ports.

[0471]

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

[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 is subjected to interference from the antenna ports of UE7 and UE8 on comb teeth 2 and 4.

[0473] Table 6

[0474] [Table 6]

[0416] In this way, the frequency domain resources (comb teeth) occupied by UE1's antenna port 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 port change randomly in order to achieve a better interference randomization effect.

[0475]

[0417] In possible design methods, 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 ports p0 and p2 of UE1 may be the first antenna ports, and antenna ports p1 and p3 of UE1 may be the second antenna ports.

[0478]

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

[0479]

[0421] As an option, 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 ports p0 and p2 of UE1 may be determined based on at least a first offset, and the comb teeth occupied by antenna ports p1 and 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 0.

[0482]

[0424] In some embodiments, the comb teeth occupied by the second antenna port may be determined based on the number of comb teeth, 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 tooth 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 resources occupied by the second antenna port.

[0486]

[0428] 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, or the second offset may be determined by the following parameters: The number of slots included in each system frame, The number of OFDM symbols included in each slot, Number of comb teeth, and Comb tooth offset Further decisions can be made based on one or more of the following.

[0487]

[0429] Optionally, the time domain resources occupied by the second antenna port may include one or more OFDM symbols. Optionally, one or more OFDM symbols may include the following parameters: 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 It is determined based on one or more of the following.

[0488]

[0430] In other words, the number of OFDM symbols included in the time domain resources 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 may be a random number greater than 0.

[0491]

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

[0492]

number

[0434] In equations (11), (12), (13), or (14), Q2 represents a second offset or a second random number (Q2 may also represent a second offset; if the second offset is a second random number, Q2 may also represent a second random number); n f n represents the system frame number corresponding to the second antenna port; s,f μl0 represents the slot number corresponding to the second antenna port; l0+l' represents the OFDM symbol number corresponding to the second antenna port, where l0 represents the index of the starting OFDM symbol among 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 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 formulas (6), (7), (8), or (9), where the mathematical symbol Σ represents summation; c() is a pseudo-random sequence, and the pseudo-random sequence is related to the cell identifier; N slot frame This represents the number of slots included in each system frame; N symb slot The symbol 'x' represents the quantity 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 a non-negative integer.

[0496]

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

[0497]

[0439] Optionally, the third offset can be determined based on one or more of the following parameters: the number of slots in each system frame, the number of OFDM symbols 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]

[0441] Optionally, the third random number may satisfy equation (15), equation (16), equation (17), or equation (18):

[0500]

number

[0442] In equations (15), (16), (17), or (18), Δ represents a third random number, and the meaning of the other symbols is the same as in equations (11), (12), (13), or (14), and the details are not explained again here.

[0501]

[0443] In this 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 port of the terminal device may change randomly at different transmission times, and the intervals between multiple comb teeth occupied by the same antenna port of the terminal device may also change 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 antenna ports of the terminal device that occupy different comb teeth are not antenna ports of the same terminal device. This enables frequency domain interference randomization and further improves the degree of freedom of the frequency domain resources occupied by the antenna ports of the terminal device, thereby further improving the interference randomization effect.

[0502]

[0444] In some embodiments, the antenna port p i The index k of the comb teeth occupied byTC (pi) The following formula may satisfy the following equation, which is determined based on the number of comb teeth, the comb tooth offset, and the second offset:

[0503]

number

[0504]

[0445] 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. Antenna port p of the terminal device i The index k of the comb teeth occupied by TC (pi) It may satisfy the following equations (19), (20), (21), or (22).

[0505]

number

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

[0506]

[0447] 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 so, antenna port p i The index k of the comb teeth occupied by TC (pi) The number of comb teeth, the comb tooth offset, and the first offset, which are determined based on these, can be expressed as follows:

[0507]

number

[0508]

number

[0448] In equation (20), if the first condition is met: N ap SRS =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 SRScs,max -1}; if so, antenna port p i The index k of the comb teeth occupied by TC (pi) The number of comb teeth, the comb tooth offset, and the second offset, which are determined based on these, can be expressed as follows:

[0509]

number

[0510]

number

[0449] In equation (21), if the first condition is met: N ap SRS =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 so, antenna port p i The index k of the comb teeth occupied by TC (pi) The number of comb teeth, the comb tooth offset, and the first offset, which are determined based on these, can be expressed as follows:

[0511]

number

[0512]

number

[0450] In equation (22), if the first condition is met: N ap SRS =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 so, antenna port p i The index k of the comb teeth occupied by TC (pi) The number of comb teeth, the comb tooth offset, and the second offset, which are determined based on these, can be expressed as follows:

[0513]

number

[0514]

number

[0451] Referring to Table 7 and Figure 7, the comb teeth occupied by each terminal device's antenna port will be described below, after the comb teeth occupied by different antenna ports have been determined based on at least a first or second offset.

[0515]

[0452] Scenario 1 described above is used as an example. The comb teeth occupied by each of the two antenna ports of UE1 to UE8 are determined based on at least a first offset, and the comb teeth occupied by each of the other two antenna ports of UE1 to UE8 are determined based on at least a second offset, as used as an example. 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 teeth 1 and 3, and the antenna ports of UE3, UE4, UE7, and UE8 occupy the same comb teeth 2 and 4.

[0517]

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

[0518]

[0455] Table 7 and Figure 7 use an example where each UE's antenna port p0 and antenna port p2 occupy one comb tooth, and each UE's antenna port p1 and antenna port p3 occupy one comb tooth. For example, the comb tooth occupied by antenna ports 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 ports 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 the UE, the corresponding base sequence, and the corresponding comb tooth, but do not show the 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 ports p0 and p2) are interfered with by the antenna ports of UE7 and UE8 (e.g., antenna ports p0 and p2) at comb teeth 1. The antenna ports of UE1 (e.g., antenna ports p1 and p3) are interfered with by the antenna ports of UE5 and UE6 (e.g., antenna ports p0 and p2) at comb teeth 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 ports p0 and p2) are interfered with by the antenna ports of UE7 and UE8 (e.g., antenna ports p0 and p2) at comb tooth 1. The antenna ports of UE1 (e.g., antenna ports p1 and p3) are interfered with by the antenna ports of UE5 and UE6 (e.g., antenna ports p0 and 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 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 UE1 to UE8 are determined based on at least a second offset, the comb teeth occupied by the antenna port of UE1 change randomly at different transmission times. For example, at transmission time 1, UE1 transmits a reference signal via comb teeth 1 and 3, and at transmission time 2, UE1 transmits a reference signal via comb teeth 1 and 4, and as a result, the antenna port causing interference to the antenna port of UE1 changes randomly. Furthermore, at the same transmission time, the antenna port causing interference to the antenna ports of terminal devices (antenna ports p0 and p2 of UE1, and antenna ports p1 and p3 of UE1) that occupy different comb teeth may not be the antenna ports of the same terminal device. For example, at transmission time 2, antenna ports p0 and p2 of UE1 are interfered with by antenna ports p0 and p2 of UE7 and UE8 at comb tooth 1, and antenna ports p1 and p3 of UE1 are interfered with by antenna ports p0 and p2 of UE5 and UE6 at comb tooth 2. This can further improve the degree of freedom of the frequency domain resources occupied by the 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]

[0461] In some embodiments, with respect to Scenario 1 above, for each UE, the 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 the result is 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 ports p0, p1, p2, and p3 of UE1 occupy comb tooth 1. Antenna ports p0, p1, p2, and p3 of UE5 occupy comb tooth 1. Other UEs are not listed individually. See Table 8 for details. UE1 is used as an example. Antenna ports p0 through p3 of UE1 are interfered with by antenna ports p0 through p3 of UE5 at comb tooth 1.

[0527] Table 8

[0528] [Table 8] TIFF0007854070000107.tif208170

[0463] At transmission time 2, antenna ports p0, p1, p2, and p3 of UE1 occupy comb tooth 1. Antenna ports p0, p1, p2, and p3 of UE5 occupy comb tooth 1. Other UEs are not listed individually. See Table 8 for details. UE1 is used as an example. Antenna ports p0 through p3 of UE1 are interfered with by antenna ports p0 through p3 of UE5 at comb tooth 1.

[0529]

[0464] Similarly, at transmission time n, antenna ports p0, p1, p2, and p3 of UE1 occupy comb tooth 1. Antenna ports p0, p1, p2, and p3 of UE5 occupy comb tooth 1. Other UEs are not listed individually. See Table 8 for details. UE1 is used as an example. Antenna ports p0 through p3 of UE1 are interfered with by antenna ports p0 through p3 of UE5 at comb tooth 1.

[0530]

[0465] At any given transmission point, each antenna port is subjected to interference from the same antenna port. UE1 is used as an example. At any given transmission point, antenna ports p0 through p3 of UE1 are subjected to interference from antenna ports p0 through 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, a correspondence may exist 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 a first offset, 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, and 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, and the antenna ports that cause interference to the antenna ports of terminal devices also change randomly at different transmission times. At the same transmission time, the antenna ports that cause interference to different antenna ports of terminal devices are different. Two-dimensional interference randomization can be achieved in the code domain and frequency domain, the interference randomization effect can be further improved, and the interference randomization convergence speed can be accelerated.

[0534]

[0469] Also, due to the introduction of cyclic shift values, the antenna port p of UEy b UEX antenna port p a The interference level resulting from this can still vary significantly at different transmission times. In this way, a good interference randomization effect can be guaranteed.

[0535]

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

[0536]

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

[0537]

[0472] For example, suppose the range of the cyclic shift value 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 And; or, if α1 belongs to the second range, the value of the first offset is k offset1 That is the case.

[0538]

[0473] In some embodiments, antenna port p i With respect to the corresponding cyclic shift value, if α1 mod 2π ∈ R0, the value of the first offset is k offset0 And; or, if α1 mod 2π ∈ R1, the value of the first offset is k offset1 And similarly, α1 mod 2π ∈ R y-1 If so, the value of the first offset is k offset y-1 That is the case.

[0539] Here, R0 represents the first range, R1 represents the second range, and similarly R y-1 represents the y-th range, and the mathematical symbol ∈ indicates belonging.

[0540]

[0474] The following may be valid as options:

[0541]

number

[0542]

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

[0543]

number

[0544]

[0476] In some other embodiments, the cyclic shift value may satisfy the following formula:

[0545]

number

[0546]

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

[0547]

number

[0478] Unless otherwise specified in the embodiments of this application, it should be noted that the meanings of the parameters in the formulas are mutually interchangeable. This is not limited to these terms.

[0548]

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

[0549]

[0480] In some embodiments, the first offset is determined based on the cyclic shift value occupied by the first antenna port p i The index k of the comb teeth occupied by TC (pi) The following equation may be satisfied, which is determined based on the number of comb teeth, the comb tooth offset, and the first offset:

[0550]

number

[0551]

[0481] For example, the first offset is determined based on the range to which the cyclic shift value belongs, and the antenna port p i The index k of the comb teeth occupied by TC (pi) The following equation (23) may be satisfied, which is determined based on the number of comb teeth, the comb tooth offset, and the first offset:

[0552]

number

[0482] Similar to equation (2) above, in equation (23), k - TC represents the comb tooth offset, k - TC ∈{0,1,...,K TC -1} and KTC represents the number of comb teeth, k offset0 or k offset0 Each of these can represent the first offset.

[0553]

[0483] If the first condition is met: N ap SRS =4, p i ∈{1001,1003},and n SRS cs,max If = 6, then antenna port p i The index k of the comb teeth occupied by TC (pi) This relates to the cyclic shift value. For example, if the cyclic shift value is α1 mod 2π ∈ R0, then antenna port p i The index k of the comb teeth occupied by TC (pi) The following equation is satisfied:

[0554]

number

[0555]

number

[0556]

number

[0484] Similarly, if the second condition is met: N apSRS =4, p i ∈{1001,1003},and n SRS cs ∈{n SRS cs,max / 2,...,n SRS cs,max -1}; if so, antenna port p i The index k of the comb teeth occupied by TC (pi) This relates to the cyclic shift value. See the formula above for details. Further details will not be explained again.

[0557] If neither the first nor the second condition is met (according to equation (23) above, (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) This relates to the cyclic shift value. For example, if the cyclic shift value is α1 mod 2π ∈ R0, then antenna port p i The index k of the comb teeth occupied by TC (pi) The following equation is satisfied:

[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] Scenario 1 above 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 equation (23) above, it is assumed that the following holds:

[0562]

number

[0563]

number

[0564]

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

[0565]

[0488] UE1 is used as an example. At transmission time 1, UE1's antenna port p0 is affected on comb teeth 1 by interference from UE2's antenna port p3, UE3's antenna port p2, UE4's antenna port p1, UE5's antenna port p0, UE6's antenna port p3, UE7's antenna port p3, and UE8's antenna port p1; UE1's antenna port p1 is affected on comb teeth 2 by interference from UE2's antenna port p0, UE3's antenna port p3, UE4's antenna port p2, UE5's antenna port p1, UE6's antenna port p0, UE7's antenna port p2, and UE8's antenna port p2. Details are not listed one by one. See Table 9 and Figure 9 for details.

[0566]

[0489] At transmission time 2, antenna ports p0 through p3 of UE1 occupy comb teeth 2, 3, 4, and 1, respectively; and antenna ports p0 through p3 of UE2 occupy comb teeth 3, 4, 1, and 2, respectively. Details are not listed individually. See Table 9 and Figure 9 for details.

[0567]

[0490] UE1 is used as an example. At transmission time 2, UE1's antenna port p0 is affected on comb teeth 1 by interference from UE2's antenna port p3, UE3's antenna port p2, UE4's antenna port p1, UE5's antenna port p3, UE6's antenna port p2, UE7's antenna port p1, and UE8's antenna port p0. Details are not listed one by one. See 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 at transmission time 1 and transmission time 2. At the same transmission time, the antenna ports that cause interference to different antenna ports of the UE are different. For example, at transmission time 1, the antenna port that causes interference to antenna port p0 of UE1 is different from the one that causes interference to antenna port p1 of UE1, and as a result, the interference randomization effect can be further improved.

[0569]

[0492] Also, due to the introduction of cyclic shift values, the antenna port p of UEy b UEX antenna port p a The level of interference resulting from this can still vary significantly at different transmission times. In this way, a good interference randomization effect can be guaranteed.

[0570] Table 9

[0571] [Table 9] TIFF0007854070000123.tif182170

[0493] According to the communication method shown in Figure 5, the comb teeth occupied by the first antenna port of the terminal device are determined based on the first offset, and as a result, 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. Thus, frequency domain interference randomization is achieved, 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 terminal devices also change randomly at different transmission times. At the same transmission time, the antenna ports that cause interference to different antenna ports of terminal devices are different. In this way, two-dimensional interference randomization can be achieved in the code domain and frequency domain, the interference randomization effect can be further enhanced, and the interference randomization convergence speed can be accelerated.

[0573]

[0495] In some embodiments, a partial sounding offset n offset RPFS The above equation (4) satisfies:

[0574]

number

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

[0575]

[0497] Referring to Table 10 and Figure 10, in Scenario 2, cell 1 contains UE1 and UE2, and each UE contains two antenna ports (for example, antenna port p0 and antenna port p1, respectively). Each antenna port of UE1 and UE2 generates a reference signal by using the base sequence r1 and the 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 contains UE3 and UE4, each UE containing two antenna ports (for example, antenna port p0 and antenna port p1, respectively). Each antenna port of UE3 and UE4 generates a reference signal using the base sequence r2 and the 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 thereby are different.

[0577] In Figure 10, each box represents one RB, with a sounding bandwidth of 16 RBs, a frequency hopping bandwidth of 4 RBs, and a frequency hopping period of 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 frequency scaling factor P F The antenna ports of the terminal devices are the same. Specifically, as shown in Table 10, the two UEs can transmit the reference signal on the same time-frequency resources.

[0579] Table 10

[0580] [Table 10]

[0499] Assume that the antenna ports of UEs within the same cell are orthogonal to each other. Upper layer parameters (e.g., K F and P F If the ) remains unchanged, one UE's antenna port will experience fixed interference at any point in time of transmission. For example, UE1's antenna port will be interfered with by UE3's antenna port.

[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 Figure 11, the communication method includes the following steps.

[0583]

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

[0584]

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

[0585]

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

[0586]

[0505] 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 the antenna ports p0 and p1 of UE1 can be determined based on at least a fourth offset.

[0590]

[0509] Optionally, the fourth offset may be a non-negative integer.

[0591]

[0510] In some embodiments, the fourth offset may be determined based on at least the cell identifier and the index of the 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 similar.

[0593]

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

[0594]

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

[0595]

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

[0596]

number

[0515] In formula (24) or formula (25), k rand represents the fourth offset or fourth random number (k randk may represent the fourth offset; if the fourth offset is the fourth random number, then k rand It is possible to represent a fourth random number; the mathematical symbol Σ represents the summation; c() is a pseudo-random sequence, and the pseudo-random sequence is associated with a cell identifier;

[0597]

number

[0598]

number

[0599]

number

[0600]

[0516] As an option, N bhop = 1

[0601]

[0517] The above formula (25) and N bhop It should be noted that the meaning of the parameter in =1 should be explained in equation (5) and Table 3 above. Further details will not be explained here.

[0602]

[0518] It should be noted that m in formula (24) or formula (25) is independent of the sequence length M. In formula (24) or formula (25), examples are used for illustrative purposes where m is an integer in the range of 0 to 7, and the range of values ​​for m in formula (24) or formula (25) is not limited in this application.

[0603]

[0519] In some embodiments, the starting position of the frequency domain resource occupied by each of the M antenna ports is determined based on at least a fourth offset: the starting position of the frequency domain resource occupied by each of the M antenna ports is a partial sounding offset n offset RPFS This may include the possibility that decisions may be made based on [the relevant criteria].

[0604]

[0520] As an option, partial sounding offset n offset RPFS This 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 a fourth offset.

[0605]

[0521] For example, partial sounding offset n offset RPFS The following equation (26) may be satisfied:

[0606]

number

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

[0607]

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

[0608]

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

[0609]

number

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

[0610]

number

[0611]

[0526] In the above equation (27), n offset FH This represents the frequency hopping offset. Optionally, the frequency hopping offset n offset FH teeth,

[0612]

number

[0613]

[0527] In the above equation (27), n offset RPFS This can represent a partial sounding offset, and a partial sounding offset n offset RPFS This 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 a fourth offset, for example, equation (26) above.

[0614]

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

[0616] During 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, during a 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. During frequency hopping period 1, the antenna port of UE3 causes interference with the antenna port of UE1. During frequency hopping period 2, the antenna port of UE4 causes interference with the antenna port of UE1. It can be seen that different antenna ports cause interference with the antenna port of UE1 at different frequency hopping periods. This results in a good interference randomization effect, which can accelerate the interference randomization convergence speed and improve channel estimation performance.

[0619]

[0531] According to the communication method shown in Figure 11, when the starting position of the frequency domain resources occupied by the antenna ports is determined, a fourth offset is introduced. As a result, the starting position of the frequency domain resources occupied by each antenna port can change randomly with different frequency hopping periods, and the antenna ports that cause interference to the antenna ports of terminal devices also change randomly, thereby achieving frequency domain interference randomization. This results in 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 for a reference signal. In response, a terminal device receives configuration information for a reference signal.

[0623]

[0535] For specific implementation and configuration information of S1301, please refer to the corresponding explanation in S501. Further details will not be explained here.

[0624]

[0536] S1302: A terminal device transmits a reference signal via M antenna ports based on configuration information. In response, a network device receives the reference signal via M antenna ports based on configuration information.

[0625]

[0537] For example, M is an integer greater than 0, and 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 are not explained here again.

[0626]

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

[0627]

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

[0628]

[0540] Optionally, the first offset may be a non-negative integer.

[0629]

[0541] Optionally, the determination of the comb teeth occupied by the first antenna port may include the possibility that the comb teeth occupied by the first antenna port may be determined based on the initial value of the comb teeth occupied by the first antenna port and a first offset.

[0630]

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

[0635]

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

[0636]

[0548] Optionally, the time domain resource occupied by the first antenna port may contain one or more OFDM symbols. The one or more OFDM symbols contained in the time domain resource occupied by the first antenna port have the following parameters: 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 decision may be based on one or more of the following.

[0637]

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

[0638]

[0550] In possible design schemes, the index of the 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 a 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 also be defined according to this principle.

[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 subbandwidths. The one or more subbandwidths included in the frequency domain resource occupied by the first antenna port have the following parameters: The index of the frequency hopping bandwidth corresponding to the first antenna port, and Index of transmission bandwidth corresponding to the first antenna port The decision may be based on one or more of the following.

[0641]

[0553] In possible design schemes, the index of the frequency-hopping bandwidth in which the frequency domain resource is located is determined based on the frequency domain resource occupied by the first antenna port, or the 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, the granularity of which is b, and the subbands are numbered in ascending order of frequencies 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 a first random number and / or a fifth random number.

[0644]

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

[0645]

[0557] For example, the first random number may be a random number greater than 0.

[0646]

[0558] Optionally, the fifth random number may be determined based on at least the frequency domain resources occupied by the first antenna port. For example, the fifth random number may be indicated by Q3.

[0559] For example, the fifth random number may be a random number greater than 0.

[0647]

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

[0648]

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

[0649]

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

[0650]

[0563] Optionally, a pseudo-random sequence may be c(). For a specific implementation of a pseudo-random sequence, please refer to the corresponding explanation in S502. Further details will not be explained here.

[0651]

[0564] Optionally, the first random number is determined based on the time-domain resources occupied by the first antenna port and a pseudo-random sequence, and the first offset is determined by the following parameters: The number of slots included in each system frame, The number of orthogonal frequency division multiplexed OFDM symbols included in each slot, Further decisions can be made based on one or more of the following. In addition, the range of values ​​for the first random number may alternatively be determined based on the number of comb teeth and the comb tooth offset.

[0652]

[0565] For example, in this 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 this application, the quantity of OFDM symbols included in each slot may be the quantity of OFDM symbols included in one slot.

[0654]

[0567] Optionally, the first random number may satisfy equation (6), equation (7), equation (8), or equation (9) in S502. Further details are not provided here.

[0655]

[0568] In equations (6), (7), (8), or (9), Q1 represents the first random number; the mathematical symbol Σ represents the summation; the mathematical symbol mod represents the modulo operation; c() is a pseudo-random sequence; n f represents the system frame number corresponding to the first antenna port (or n f (where represents the system frame number of the time-domain resource occupied by the first antenna port); N slot frame This represents the number of slots included in each system frame; N symb slot n represents the quantity of OFDM symbols contained in each slot; s,f μ represents the slot number corresponding to the first antenna port (or n s,f μl' represents 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 This represents the number of teeth on the comb.

[0656]

[0569] In this application, the comb teeth occupied by the first antenna port of the terminal device are determined based on a first offset, and as a result, the frequency domain resources (comb teeth) occupied by the terminal device can change randomly at different transmission times. In this way, the terminal devices causing interference to the terminal device change randomly. Thus, frequency domain interference randomization is achieved, and a better interference randomization effect can be achieved.

[0657]

[0570] The first random number is determined based on at least the time-domain resources occupied by the first antenna port: This may include the fact that the first random number is determined based on one of several first correspondences and the time-domain resources occupied by the first antenna port. Optionally, the first random number may be replaced with the first variable.

[0658]

[0571] Optionally, one of the multiple first correspondences 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 multiple first correspondences and / or indication information that points to one of the multiple first correspondences.

[0659]

[0572] For example, a network device may select one first correspondence from a plurality of first correspondences and instruct a terminal device to use the selected first correspondence.

[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, at least one first random number corresponds one-to-one with 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, a terminal device can obtain a first random number corresponding to a time-domain resource occupied by a first antenna port from a correspondence between at least one first random number and at least one time-domain resource, based on the time-domain resource occupied by the first antenna port.

[0663]

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

[0664]

[0577] For example, assume that each first correspondence (which may also be called a pattern) includes a correspondence between n time-domain resources and n first random numbers. n time-domain resources {y1, y2, ..., y nThe first random number corresponding to each of the} is, for the k-th first correspondence, {x1, x2, ..., x n If} then the first random number corresponding sequentially to the n time-domain resources is {x} for the (k+1)th first correspondence. (1+a)modn ,x (2+a)modn ,...,x (M+a)modn} is {x1,x2,...,x n The value of} is {0, 1, ..., K}. TC It belongs to -1}, K TC is the number of comb teeth. Optionally, a=1.

[0665]

[0578] Thus, in different time domain resources, the first random number obtained by the terminal device changes randomly, and the comb teeth occupied by the first antenna port of the terminal device are determined based on the first random number, and as a result, 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 at least one first random number and at least one time-domain resource includes: the correspondence between at least one first random number and the relative number of at least one reference signal transmission in the frequency hopping period.

[0667]

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

[0668]

[0581] For example, a terminal device can obtain a first random number from a correspondence between at least one first random number and 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, as an option, the correspondence between at least one first random number and at least one time-domain resource may include: a correspondence between at least one first random number and at least one frequency-hopping period index.

[0670]

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

[0671]

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

[0672]

[0585] Optionally, a network device may instruct terminal devices in different cells to have different first correspondences.

[0673]

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

[0674]

[0587] In some embodiments, if the first offset is a first random number (where the first random number is determined based on the time domain resources occupied by the first antenna port), the antenna port p i The index k of the comb teeth occupied by TC (pi) And the one determined based on the first offset may satisfy the following equation:

[0675]

number

[0676]

[0588] For example, the antenna port p of a terminal device i The index k of the comb teeth occupied by TC (pi) The result determined based on the first random number may satisfy equation (10) in S502, where Q1 represents the first random number or the first offset. For specific implementations, please refer to the explanation of equation (10) in S502. Further details will not be explained here.

[0677]

[0589] 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 resources occupied by the first antenna port, and the first offset is a first random number), please refer to the explanation of Table 6 and Figure 6 in S502 for the comb teeth occupied by the antenna port of each terminal device. Further details will not be explained here again.

[0678]

[0590] In some embodiments, the fifth random number is determined based on frequency domain resources occupied by at least the first antenna port, which may include the fifth random number being determined based on 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]

[0592] Optionally, the fifth random number may satisfy equation (28) or equation (29):

[0681]

number

[0593] In equation (28) or equation (29), Q3 is the fifth random number, the mathematical symbol Σ represents the summation, the mathematical symbol mod represents the modulo operation, c() is a pseudo-random sequence, k represents the index of the frequency hopping bandwidth and / or the index of the transmission bandwidth, corresponding to the frequency domain resources occupied by the first antenna port, K TC This represents the number of teeth on the comb.

[0682]

[0594] It should be noted that m in formula (28) or formula (29) is independent of the sequence length M. In formula (28) or formula (29), examples are used for illustrative purposes where m is an integer in the range of 0 to 7, and the range of values ​​for m in formula (28) or formula (29) is not limited in this application.

[0683]

[0595] In some other embodiments, the fifth random number may be determined based on at least the frequency domain resources occupied by the first antenna port, which may include the fifth random number being determined based on one of a plurality of second correspondences and the frequency domain resources occupied by the first antenna port.

[0684]

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

[0685]

[0597] For example, a network device may select one second correspondence from a plurality of second correspondences and instruct a terminal device to use the selected second correspondence.

[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, at least one fifth random number corresponds one-to-one with at least one frequency domain resource.

[0688]

[0600] For example, a terminal device can obtain a fifth random number corresponding to a frequency domain resource occupied by a first antenna port from the correspondence 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 is the same as that of the first correspondence. For details, please refer to the explanation of the first correspondence. Details will not be explained again here.

[0690]

[0602] Thus, in different frequency domain resources, the fifth random number obtained by the terminal device changes randomly, and the comb teeth occupied by the terminal device's first antenna port are determined based on the fifth random number, and as a result, the frequency domain resources (comb teeth) occupied by the terminal device change randomly at different transmission times.

[0691]

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

[0692]

[0604] In this way, the network device instructs terminal devices in different cells to have different second correspondences, and as a result, the terminal devices that cause interference to terminal devices change randomly, thereby achieving interference randomization and a better interference randomization effect.

[0693]

[0605] In some embodiments, when the first offset is a fifth random number (where the first offset is determined based on the time domain resources occupied by the first antenna port), the antenna port p i The index k of the comb teeth occupied by TC (pi) And the one determined based on the fifth offset may satisfy the following equation:

[0694]

number

[0695]

[0606] For example, the antenna port p of a terminal device i The index k of the comb teeth occupied by TC (pi) And the one determined based on the fifth offset may satisfy the following equation (30):

[0696]

number

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

[0697]

[0608] Referring to Table 11, the comb teeth occupied by each terminal device's antenna port are described below after the comb teeth occupied by the first antenna port have been determined based on at least the fifth random number.

[0698]

[0609] Scenario 1 above 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 ports of each UE may be those shown in Table 11.

[0699]

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

[0700]

[0611] It should be noted that Table 11 uses an example where each UE's antenna port p0 and antenna port p2 occupy one comb tooth, and antenna port p1 and antenna port p3 occupy one comb tooth. For example, the comb tooth occupied by antenna ports 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 ports 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 the UE, the corresponding base sequence, and the corresponding comb tooth, but does not show the antenna ports.

[0701]

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

[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 is subjected to interference from the antenna ports of UE7 and UE8 on comb teeth 2 and 4.

[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 similar. Frequency domain resources 2 through n are similar to frequency domain resource 1 and are not described in detail individually.

[0704] Table 11

[0705] [Table 11]

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

[0706]

[0616] In some embodiments, the first offset includes a first random number and a fifth random number (the first random number is determined based on the time domain resources occupied by the first antenna port, and the fifth random number is determined based on the frequency domain resources occupied by the first antenna port), antenna port p i The index k of the comb teeth occupied by TC (pi) The following equation may be satisfied, which is determined based on the number of comb teeth, the comb tooth offset, and the first offset:

[0707]

number

[0708]

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

[0709]

number

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

[0710]

[0619] 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 have been determined based on the first random number and the fifth random number.

[0711]

[0620] Scenario 1 above 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 a first random number and a fifth random number. The comb teeth occupied by each 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 1, the antenna ports of UE1, UE2, UE5, and UE6 occupy comb teeth 1 and 3, and the antenna ports of UE3, UE4, UE7, and UE8 occupy the same comb teeth 2 and 4. UE1 is used as an example. The antenna port of UE1 is subjected to interference from the antenna ports of UE5 and UE6 on comb teeth 1 and 3.

[0713]

[0622] At frequency domain resource 2 and 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 tooth 2 and the same comb tooth 4. The antenna port of UE1 is subjected to interference from the antenna ports of UE7 and UE8 on comb teeth 1 and 3.

[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 is subjected to interference from the antenna ports of UE7 and UE8 on comb teeth 2 and 4.

[0715] Table 12

[0716] [Table 12]

[0624] In this way, the comb teeth occupied by the antenna port of UE1 change randomly at different transmission times and different frequency domain resources, and as a result, the UEs that cause interference to UE1 change randomly. UE5 and UE6 are UEs that cause interference to UE1 at some frequency domain resources and some transmission times. UE7 and UE8 are UEs that cause interference to UE1 at some frequency domain resources and some transmission times. The antenna port that causes interference to the antenna port of UE1 changes randomly in order 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 ten correspondences and the time-domain resources occupied by the first antenna port.

[0718]

[0626] Optionally, one of the multiple 10th correspondences 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 multiple 10th correspondences and / or indication information that points to one of the multiple 10th correspondences.

[0719]

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

[0720]

[0628] Optionally, a network device may instruct terminal devices in different cells to have different 10th correspondences.

[0721]

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

[0722]

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

[0723]

[0631] For example, assume that each 10th correspondence (which may also be called a pattern) includes a correspondence between n time-domain resources and n comb values. n time-domain resources {y1, y2, ..., y n The first random number corresponding to each of the} is, for the k-th first correspondence, {cb1, cb2, ..., cb n If}, then the comb tooth values ​​corresponding sequentially to n time-domain resources are {cb} for the (k+1)th first correspondence. (1+a)modn ,cb (2+a)modn ,...,cb (M+a)modn} is {cb1,cb2,...,cb n The value of} is {0, 1, ..., K}. TC It belongs to -1}, K TC is the number of comb teeth. Optionally, a=1.

[0724]

[0632] For example, a terminal device can 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] Multiple 10th correspondences may be as shown in Table 13. In Table 13, for example, there are four 10th correspondences, each containing four time-domain resources and four combs. 10th correspondences 1 through 10th correspondences 4 are distinct from each other. See Table 13 for details.

[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 times 2 through 4 are the same as transmission time 1, and their details will not be described individually.

[0727]

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

[0728]

[0636] For example, in the 10th correspondence relationship 1, transmission time 1 to transmission time 4 correspond to comb tooth 1 to comb tooth 4, respectively, and transmission time 5 to transmission time 8 correspond to comb tooth 1 to comb tooth 4, respectively.

[0729] Table 13

[0730] [Table 13]

[0637] In this way, the terminal device obtains a comb tooth occupied by the first antenna port by using one of the multiple 10th correspondences and the time domain resources occupied by the first antenna port, and as a result the occupied comb tooth changes randomly at different transmission times. The network device assigns different 10th correspondences (patterns) to terminal devices in different cells, and as a result the terminal devices causing interference to terminal devices change randomly, thereby achieving 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 11 correspondences and the frequency domain resources occupied by the first antenna port.

[0732]

[0639] Optionally, one of the eleventh correspondences 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 correspondences and / or indication information that points to one of the eleventh correspondences.

[0733]

[0640] For example, a network device may select one eleventh correspondence from a plurality of eleventh correspondences and instruct a terminal device to use the selected eleventh correspondence.

[0734]

[0641] Optionally, a network device may instruct terminal devices in different cells to have different 11th correspondences.

[0735]

[0642] Optionally, one 11th correspondence may include a correspondence 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 with at least one frequency domain resource.

[0737]

[0644] For example, assume that each 10th correspondence (which may also be called a pattern) includes a correspondence between n frequency domain resources and n comb tooth values. n frequency domain resources {y1, y2, ..., y n The first random number corresponding to each of the} is, for the k-th first correspondence, {cb1, cb2, ..., cb n If}, then the comb tooth values ​​corresponding sequentially to the n frequency domain resources are {cb} for the (k+1)th first correspondence. (1+a)modn ,cb (2+a)modn ,...,cb (M+a)modn} is {cb1,cb2,...,cb n The value of} is {0, 1, ..., K}.TC It belongs to -1}, K TC is the number of comb teeth. Optionally, a=1.

[0738]

[0645] For example, a terminal device can 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] Multiple eleventh correspondences may be as shown in Table 14. In Table 14, for example, there are four eleventh correspondences, each containing four frequency domain resources and four combs. Eleventh correspondences 1 through 4 are distinct from each other. See Table 14 for details.

[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 similar. Frequency domain resources 2 through 4 are similar to frequency domain resource 1 and are not described in detail individually.

[0741]

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

[0742] Table 14

[0743] [Table 14]

[0649] In this way, the terminal device obtains a comb tooth occupied by the first antenna port by using one of the 11th correspondences and the frequency domain resource occupied by the first antenna port, and as a result 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, and as a result the terminal devices causing interference to terminal devices change randomly, thereby achieving interference randomization and 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 twelve correspondences and frequency domain resources and time domain resources occupied by the first antenna port.

[0745]

[0651] Optionally, one of the 12th correspondences may be indicated to the terminal device by the network device. For example, the configuration information of the reference signal may include indication information that points to one of the 12th correspondences and / or one of the 11th correspondences.

[0746]

[0652] For example, a network device may select one 12th correspondence from a plurality of 12th correspondences and instruct a terminal device to use the selected 12th correspondence.

[0747]

[0653] Optionally, a network device may instruct terminal devices in different cells to have different 12th correspondences.

[0748]

[0654] Optionally, one 12th correspondence may include a correspondence 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, a terminal device can 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] Multiple 12th correspondences may be combinations of Table 13 and Table 14, for example, as shown in Table 15.

[0752]

[0658] In Table 15, for example, there are four 12th correspondences, each containing four time-domain resources and four frequency-domain resources, and has four teeth. The 12th correspondences 1 through 4 are distinct from each other. See Table 15 for details.

[0753] Table 15

[0754] [Table 15]

[0659] In this way, the terminal device obtains a comb tooth occupied by the first antenna port by using one of the 12 correspondences and frequency domain resources and time domain resources occupied by the first antenna port, and as a result the comb tooth occupied by the first antenna port changes randomly in different frequency domain resources and time domain resources. The network device assigns different 12 correspondences (patterns) to terminal devices in different cells, and as a result the terminal devices causing interference to terminal devices change randomly, thereby achieving interference randomization and a better interference randomization effect.

[0755]

[0660] In possible design methods, the M antenna ports may further include at least one second antenna port. For a description of the second antenna port, see the corresponding description in S502. Further details are not provided here.

[0756]

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

[0757]

[0662] As an option, 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 0.

[0759]

[0664] Optionally, the comb teeth occupied by the second antenna port may be determined based on at least a second offset, which may include the possibility that the comb teeth occupied by the second antenna port are determined based on the initial value of the comb teeth occupied by the second antenna port and a second offset.

[0760]

[0665] Optionally, the initial value of the comb teeth occupied by the second antenna port may be determined based on the comb tooth offset; or, the initial value of the comb teeth occupied by the second antenna port may be determined based on the number of comb teeth 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, 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 the time-domain resources and / or frequency-domain resources occupied by the second antenna port.

[0764]

[0669] Optionally, the time domain resource occupied by the second antenna port may contain 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 have the following parameters: 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 It is determined based on one or more of the following.

[0765]

[0670] The number of OFDM symbols included in the time domain resources 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 includes one or more subbandwidths. Optionally, the one or more subbandwidths included in the frequency domain resource occupied by the second antenna port have the following parameters: The index of the frequency hopping bandwidth corresponding to the second antenna port, and Index of transmission bandwidth corresponding to the second antenna port It is determined based on one or more of the following.

[0767]

[0672] Optionally, all first antenna ports included in the terminal device belong to the same reference signal resource, 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 or may not 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 the time-domain resources occupied by the second antenna port. For example, the second random number may be indicated by Q2.

[0770]

[0675] For example, the second random number may be a random number that is greater than 0 or equal to 0.

[0771]

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

[0772]

[0677] For example, the sixth random number may be a random number that is greater than 0 or equal to 0.

[0773]

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

[0775]

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

[0776]

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

[0777]

[0682] Optionally, the first random number may satisfy equation (11), equation (12), equation (13), or equation (14) in S502. Further details are not provided here.

[0778]

[0683] In equations (11), (12), (13), or (14), Q2 is the second random number, the mathematical symbol Σ represents the summation, the mathematical symbol mod represents the modulo operation, c() is a pseudo-random sequence, and n f represents the system frame number corresponding to the second antenna port (or n f (where represents the system frame number of the time-domain resource occupied by the second antenna port), N slot frame This represents the number of slots in each system frame, N symb slot n represents the quantity of OFDM symbols in each slot, s,f μ represents the slot number corresponding to the second antenna port (or n s,f μ l' 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 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 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 of the time domain resource occupied by the second antenna port), K TC This represents the number of teeth on the comb.

[0779]

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

[0780]

[0685] Optionally, one of the multiple third correspondences 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 multiple third correspondences and / or indication information that points to one of the multiple third correspondences.

[0781]

[0686] For example, a network device may select one third correspondence from a plurality of third correspondences and instruct a terminal device to use the selected third correspondence.

[0782]

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

[0783]

[0688] For example, at least one second random number corresponds one-to-one with 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, a terminal device can obtain a second random number corresponding to a time-domain resource occupied by a second antenna port from the correspondence between at least one second random number and at least one time-domain resource, based on the time-domain resource occupied by the second antenna port.

[0785]

[0690] Thus, the second random number obtained by the terminal device changes randomly at different transmission times, and the comb teeth occupied by the terminal device's second antenna port are determined based on the second random number, and as a result, the frequency domain resources (comb teeth) occupied by the terminal device's second antenna port 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 at least one second random number and at least one time-domain resource may include: the correspondence between at least one second random number and the relative number of at least one reference signal transmission in the frequency hopping period.

[0787]

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

[0788]

[0693] For example, a terminal device can obtain a second random number from a correspondence between at least one second random number and 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 at least one second random number and at least one time-domain resource may include: a correspondence between at least one second random number and at least one frequency-hopping period index.

[0790]

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

[0791]

[0696] For example, a terminal device can obtain a second random number from a correspondence between at least one second random number and at least one frequency hopping period index, 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, a network device may instruct terminal devices in different cells to have a different second correspondence.

[0793]

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

[0794]

[0699] In some embodiments, the sixth random number may be determined based on at least the frequency domain resources occupied by the second antenna port, and 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 the summation, the mathematical symbol mod represents the modulo operation, c() is a pseudo-random sequence, k represents the index of the frequency hopping bandwidth and / or the index of the transmission bandwidth corresponding to the frequency domain resource occupied by the second antenna port, K TC This represents the number of teeth on the comb.

[0798]

[0703] It should be noted that m in formula (32) or formula (33) is independent of the sequence length M. In formula (32) or formula (33), examples are used for illustrative purposes where m is an integer in the range of 0 to 7, and the range of values ​​for m in formula (32) or formula (33) is not limited in this application.

[0799]

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

[0800]

[0705] Optionally, one of the multiple fourth correspondences 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 multiple fourth correspondences and / or indication information that points to one of the multiple fourth correspondences.

[0801]

[0706] For example, a network device may select one fourth correspondence from a plurality of fourth correspondences and instruct a terminal device to use the selected fourth correspondence.

[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, at least one sixth random number corresponds one-to-one with at least one frequency domain resource.

[0804]

[0709] For example, a terminal device can obtain a sixth random number corresponding to a frequency domain resource occupied by a second antenna port from the correspondence 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 is the same as that of the first correspondence. For details, please refer to the explanation of the first correspondence. Details will not be explained again here.

[0806]

[0711] Thus, in different frequency domain resources, the sixth random number obtained by the terminal device changes randomly, and the comb teeth occupied by the terminal device's second antenna port are determined based on the sixth random number, and as a result, the frequency domain resources (comb teeth) occupied by the terminal device's second antenna port change randomly at different transmission times.

[0807]

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

[0808]

[0713] In this way, the network device instructs terminal devices in different cells to have different fourth correspondences, and as a result, the terminal devices that cause interference to other terminal devices change randomly, thereby achieving interference randomization and 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 a non-negative integer.

[0811]

[0716] In some embodiments, the third offset may be determined based on at least the time-domain resources and / or frequency-domain resources occupied by the second antenna port. For specific implementations of the time-domain resources and frequency-domain resources occupied by the second antenna port, please refer to the above description. Further details are not provided 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 the time-domain resources 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 that is greater than 0 or equal to 0.

[0815]

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

[0816]

[0721] For example, the seventh random number may be a random number that is greater than 0 or equal to 0.

[0817]

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

[0818]

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

[0819]

[0724] In some embodiments, the determination of the third random number may include the determination of the third random number based on 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 resources occupied by the second antenna port and a pseudo-random sequence, or the third random number is determined by the following parameters: The number of slots included in each system frame, The number of OFDM symbols included in each slot, Number of comb teeth, and Comb tooth offset The decision may be based on one or more of the following.

[0821]

[0726] Optionally, the third random number in S502 may satisfy equations (15), (16), (17), (18), (34), or (35). Further details are not provided here.

[0822]

number

[0727] In equations (15), (16), (17), (18), (34), or (35), Δ is a third random number, the mathematical symbol Σ represents the summation, the mathematical symbol mod represents the modulo operation, c() is a pseudo-random sequence, and n f represents the system frame number corresponding to the second antenna port (or n f (where represents the system frame number of the time-domain resource occupied by the second antenna port), N slot frame This represents the number of slots in each system frame, N symb slot n represents the quantity of OFDM symbols in each slot, s,f μ represents the slot number corresponding to the second antenna port (or n s,f μ l' 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 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 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 of the time domain resource occupied by the second antenna port), K TC This represents the number of teeth on the comb.

[0823]

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

[0824]

[0729] Optionally, one of the multiple fifth correspondences 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 multiple fifth correspondences and / or indication information that points to one of the multiple fifth correspondences.

[0825]

[0730] For example, a network device may select one fifth correspondence from a plurality of fifth correspondences and instruct a terminal device to use the selected fifth correspondence.

[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, at least one third random number corresponds one-to-one with 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, a terminal device can obtain a third random number corresponding to a time-domain resource occupied by a second antenna port from the correspondence 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 is the same as that of the first correspondence. For details, please refer to the explanation of the first correspondence. Details will not be explained again here.

[0830]

[0735] Thus, the third random number obtained by the terminal device changes randomly at different transmission times, and the comb teeth occupied by the terminal device's second antenna port are determined based on the third random number, and as a result, 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 at least one third random number and at least one time-domain resource may include: the correspondence between at least one third random number and the relative number of at least one reference signal transmission in the frequency hopping period.

[0832]

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

[0833]

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

[0834]

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

[0835]

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

[0836]

[0741] For example, a terminal device can obtain a third random number from a correspondence between at least one third random number and at least one frequency hopping period index, 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, a network device may instruct terminal devices in different cells to have a different fifth correspondence.

[0838]

[0743] In this way, the network device instructs terminal devices in different cells to have different fifth correspondences, and as a result, the terminal devices causing interference to terminal devices change randomly, thereby achieving frequency domain interference randomization and a better interference randomization effect.

[0839]

[0744] In some embodiments, the seventh random number may be determined based on at least the frequency domain resources occupied by the second antenna port, which may include the seventh random number being determined 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]

[0745] Optionally, the seventh random number may satisfy equation (36), equation (37), or equation (38):

[0841]

number

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

[0842]

[0747] It should be noted that m in equations (36), (37), or (38) is independent of the sequence length M. In equations (36), (37), or (38), examples where m is an integer between 0 and 7 are used for illustrative purposes, and the range of values ​​for m in equations (36), (37), or (38) is not limited in this application.

[0843]

[0748] In some other embodiments, the seventh random number may be determined based on at least the frequency domain resources occupied by the second antenna port, which may include the seventh random number being determined based on one of a plurality of sixth correspondences and the frequency domain resources occupied by the second antenna port.

[0844]

[0749] Optionally, one of the multiple sixth correspondences 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 multiple sixth correspondences and / or indication information that points to one of the multiple sixth correspondences.

[0845]

[0750] For example, a network device may select one sixth correspondence from a plurality of sixth correspondences and instruct a terminal device to use the selected sixth correspondence.

[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, at least one seventh random number corresponds one-to-one with at least one frequency domain resource.

[0848]

[0753] For example, a terminal device can obtain a seventh random number corresponding to a frequency domain resource occupied by a second antenna port from the correspondence 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 is the same as that of the first correspondence. For details, please refer to the explanation of the first correspondence. Details will not be explained again here.

[0850]

[0755] Thus, in different frequency domain resources, the seventh random number obtained by the terminal device changes randomly, and the comb teeth occupied by the terminal device's second antenna port are determined based on the seventh random number, and as a result, the frequency domain resources (comb teeth) occupied by the terminal device's second antenna port may change randomly at different transmission times.

[0851]

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

[0852]

[0757] In this way, the network device instructs terminal devices in different cells to have different sixth correspondences, and as a result, the terminal devices that cause interference to other terminal devices change randomly, thereby achieving interference randomization and a better interference randomization effect.

[0853]

[0758] In this 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 port of the terminal device may change randomly at different transmission times, and the intervals between multiple comb teeth occupied by the same antenna port of the terminal device may also change 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 antenna ports that occupy different comb teeth of the terminal device may not be antenna ports of the same terminal device. This can achieve interference randomization and further improve the degree of freedom of the resources occupied by the antenna ports of the terminal device, thereby further improving the interference randomization effect.

[0854]

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

[0855]

number

[0856]

[0760] In some embodiments, when the second offset is a sixth random number Q4 (where the sixth random number is determined based on the frequency domain resources occupied by the first antenna port), the antenna port p i The index k of the comb teeth occupied by TC (pi) And the one determined based on the second offset may satisfy the following equation:

[0857]

number

[0858]

[0761] In some embodiments, the second offset is the sum of the first offset and the third offset, the first offset is the first random number Q1, and the third offset is the third random number Δ, then the antenna port p i The index k of the comb teeth occupied by TC (pi) And the one determined based on the second offset may satisfy the following equation:

[0859]

number

[0762] In some embodiments, the second offset is the sum of the first offset and the third offset, the first offset is the fifth random number Q3, and the third offset is the seventh random number Δ1, then the antenna port p i The index k of the comb teeth occupied by TC (pi) And the one determined based on the second offset may satisfy the following equation:

[0860]

number

[0763] In some embodiments, the second offset is the sum of the first offset and the third offset, the first offset includes the first random number Q1 and the fifth random number Q3, and the third offset includes the third random number Δ and the seventh random number Δ1, then the antenna port p i The index k of the comb teeth occupied by TC (pi) And the one determined based on the second offset may satisfy the following equation:

[0861]

number

[0764] 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. Antenna port p of the terminal device i The index k of the comb teeth occupied by TC (pi) It may satisfy the following equations (39), (40), (41), (42), (43), or (44).

[0862]

number

[0765] Referring to Table 7 and Figure 7, the comb teeth occupied by each terminal device's antenna port will be described below, after the comb teeth occupied by different antenna ports have been determined based on at least a first or second offset.

[0863]

[0766] For example, after the comb teeth occupied by different antenna ports of terminal devices are determined based on a first offset (the first offset is determined based on the time 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), please refer to the explanation of Table 7 and Figure 7 in S502 for the comb teeth occupied by each antenna port of terminal devices. Further details will not be explained here again.

[0864]

[0767] For example, after the comb teeth occupied by different antenna ports of terminal devices 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), refer to Table 16 for the comb teeth occupied by each antenna port of terminal devices.

[0865]

[0768] Scenario 1 above is used as an example. It is used as an example that the comb teeth occupied by each of the two antenna ports of UE1 to UE8 are determined based on at least a first offset, and the comb teeth occupied by each of the other two antenna ports 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 teeth 1 and 3, while the antenna ports of UE3, UE4, UE7, and UE8 occupy the same comb teeth 2 and 4.

[0867]

[0770] UE1 is used as an example. In frequency domain resource 1, the antenna port of UE1 is subjected to 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 where each UE's antenna ports p0 and p2 occupy one comb tooth, and antenna ports p1 and p3 occupy one comb tooth. For example, the comb tooth occupied by antenna ports p0 and 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 ports p1 and 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 the UE, the corresponding base sequence, and the corresponding comb tooth, but does not show the 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 of UE1 (e.g., antenna ports p0 and p2) are interfered with by the antenna ports of UE7 and UE8 (e.g., antenna ports p0 and p2) in comb tooth 1. The antenna ports of UE1 (e.g., antenna ports p1 and p3) are interfered with by the antenna ports of UE5 and UE6 (e.g., antenna ports p0 and p2) 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 of UE1 (e.g., antenna ports p0 and p2) are interfered with by the antenna ports of UE7 and UE8 (e.g., antenna ports p0 and p2) in comb tooth 1. The antenna ports of UE1 (e.g., antenna ports p1 and p3) are interfered with by the antenna ports of UE5 and UE6 (e.g., antenna ports p0 and p2) in 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 similar. Frequency domain resources 2 through n are similar to frequency domain resource 1 and are not described in detail individually.

[0874] Table 16

[0875] [Table 16]

[0777] In this way, after the comb teeth occupied by two antenna ports of each 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 UE1 to UE8 are determined based on at least a second offset, the comb teeth occupied by the antenna ports of UE1 change randomly in different frequency domain resources. For example, in frequency domain resource 1, UE1 transmits a reference signal via comb teeth 1 and 3, and in frequency domain resource 2, UE1 transmits a reference signal via comb teeth 1 and 4, and as a result, the antenna ports that cause interference to the antenna ports of UE1 change randomly. Furthermore, in the same frequency domain resource, the antenna ports that cause interference to the antenna ports of terminal devices (antenna ports p0 and p2 of UE1, and antenna ports p1 and p3 of UE1) that occupy different comb teeth may not be antenna ports of the same terminal device. For example, in frequency domain resource 2, antenna ports p0 and p2 of UE1 are interfered with by antenna ports p0 and p2 of UE7 and UE8 in comb tooth 1, and antenna ports p1 and p3 of UE1 are interfered with by antenna ports p0 and p2 of UE5 and UE6 in comb tooth 2. This can further improve the degree of freedom of resources occupied by the 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 terminal devices 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 each UE terminal device may be a combination of Table 7 and Table 16, for example, as shown in Table 17.

[0877]

[0779] Scenario 1 above is used as an example. It is used as an example that the comb teeth occupied by two antenna ports of each UE1 to UE8, and the comb teeth occupied by the other two antenna ports of each UE1 to UE8, are determined based on at least the second offset. The comb teeth occupied by the antenna ports of each UE may be those shown in Table 17. For a specific explanation, 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 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 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 times and different frequency domain resources. For example, at transmission time 1 and frequency domain resource 1, UE1 transmits a reference signal via comb teeth 1 and 3; at transmission time 2 and frequency domain resource 2, UE1 transmits a reference signal via comb teeth 1 and 4, and as a result, the antenna ports that cause interference to the antenna ports of UE1 change randomly. Furthermore, at the same transmission time and the same frequency domain resource, the antenna ports that cause interference to the antenna ports of terminal devices (antenna ports p0 and p2 of UE1, and antenna ports p1 and p3 of UE1) that occupy different comb teeth may not be antenna ports of the same terminal device. For example, at transmission time 2 and in the same frequency domain resource 2, antenna ports p0 and p2 of UE1 are interfered with by antenna ports p0 and p2 of UE7 and UE8 in comb tooth 1, and antenna ports p1 and p3 of UE1 are interfered with by antenna ports p0 and p2 of UE5 and UE6 in comb tooth 2. This can further improve the degree of freedom of resources occupied by the 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 13 correspondences and the time-domain resources occupied by the second antenna port.

[0881]

[0782] Optionally, one of the 13th correspondence may be instructed to the terminal device by the network device.

[0882] Optionally, a network device may instruct terminal devices in different cells to have different 13th correspondences.

[0883]

[0783] Optionally, one 13th 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 with at least one time-domain resource.

[0885]

[0785] As an option, the 13th correspondence is different from the 10th correspondence.

[0886]

[0786] For example, a terminal device can 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] As an option, the specific implementation of the 13th correspondence is the same as that of the 10th correspondence. For details, please refer to the above explanation of the 10th correspondence. Details will not be explained 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 14 correspondences and the frequency domain resources occupied by the second antenna port.

[0889]

[0789] Optionally, one of several 14 correspondences may be instructed to the terminal device by the network device.

[0890] Optionally, a network device may instruct terminal devices in different cells to have different 14th correspondences.

[0891]

[0790] Optionally, one 14th 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 with at least one frequency domain resource.

[0893]

[0792] As an option, the 14th correspondence is different from the 11th correspondence.

[0894]

[0793] For example, a terminal device can obtain the comb teeth occupied by the second antenna port from the correspondence between at least one ...

Claims

1. It is a method of communication: The step of transmitting the configuration information of the reference signal; and A step of receiving the reference signal via M antenna ports based on the configuration information, wherein M is an integer greater than 0, the M antenna ports include at least one first antenna port, the comb teeth occupied by the first antenna port are determined based on at least a first offset, the first offset is determined based on at least the time-domain resources and / or frequency-domain resources occupied by the first antenna port; The first offset includes at least a first random number, The first random number is determined based at least on the time-domain resources occupied by the first antenna port, A communication method wherein the first random number is determined based on at least the time-domain resources occupied by the first antenna port, the first random number is determined based on one of a plurality of first correspondences and the time-domain resources occupied by the first antenna port.

2. In the communication method according to claim 1, the first offset further includes a fifth random number, A communication method wherein the fifth random number is determined based at least on the frequency domain resources occupied by the first antenna port.

3. A communication method according to claim 1, wherein the first correspondence includes a correspondence between at least one first random number and at least one time-domain resource.

4. In the communication method according to claim 3, one frequency hopping period includes at least one transmission of a reference signal, and the correspondence between at least one first random number and at least one time-domain resource is: A communication method comprising a correspondence between at least one first random number and the relative number of transmissions of at least one reference signal in the frequency hopping period.

5. In the communication method according to claim 3, the correspondence between at least one first random number and at least one time-domain resource is: A communication method comprising a correspondence between at least one first random number and at least one index of a frequency hopping period.

6. In the communication method according to claim 2, the first random number is determined based at least on the time-domain resources occupied by the first antenna port: A communication method comprising determining the first random number based on a time-domain resource occupied by the first antenna port and a pseudo-random sequence.

7. In the communication method according to claim 6, the first random number has the following parameters: The number of slots included in each system frame, The number of OFDM symbols included in each slot, Number of comb teeth, and Comb tooth offset A communication method further determined based on one or more of the following, wherein the number of comb teeth 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.

8. In the communication method according to claim 6, the first random number is: [Math 1] satisfies Q 1 is the first random number, the mathematical symbol Σ represents the sum, the mathematical symbol mod represents the modulo operation, c() is a pseudo-random 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 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, 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, and K TC represents the number of teeth, a communication method.

9. It is a method of communication: The step of receiving configuration information of a reference signal; and A step of transmitting the reference signal through M antenna ports based on the configuration information, wherein M is an integer greater than 0, the M antenna ports include at least one first antenna port, the comb teeth occupied by the first antenna port are determined based on at least a first offset, the first offset is determined based on at least the time-domain resources and / or frequency-domain resources occupied by the first antenna port; The first offset includes at least a first random number, The first random number is determined based at least on the time-domain resources occupied by the first antenna port, A communication method wherein the first random number is determined based on at least the time-domain resources occupied by the first antenna port, the first random number is determined based on one of a plurality of first correspondences and the time-domain resources occupied by the first antenna port.

10. In the communication method according to claim 9, the first offset further includes a fifth random number, A communication method wherein the fifth random number is determined based at least on the frequency domain resources occupied by the first antenna port.

11. A communication method according to claim 9, wherein the first correspondence includes a correspondence between at least one first random number and at least one time-domain resource.

12. In the communication method according to claim 11, one frequency hopping period includes at least one transmission of a reference signal, and the correspondence between at least one first random number and at least one time-domain resource is: A communication method comprising a correspondence between at least one first random number and the relative number of transmissions of at least one reference signal in the frequency hopping period.

13. In the communication method according to claim 11, the correspondence between at least one first random number and at least one time-domain resource is: A communication method comprising a correspondence between at least one first random number and at least one index of a frequency hopping period.

14. In the communication method according to claim 10, the first random number is determined based at least on the time-domain resources occupied by the first antenna port: A communication method comprising determining the first random number based on a time-domain resource occupied by the first antenna port and a pseudo-random sequence.

15. In the communication method according to claim 14, the first random number has the following parameters: The number of slots included in each system frame, The number of OFDM symbols included in each slot, Number of comb teeth, and Comb tooth offset A communication method further determined based on one or more of the following, wherein the number of comb teeth 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.

16. In the communication method according to claim 14, the first random number is: [Math 2] Satisfying Q 1 is the first random number, the mathematical symbol Σ represents the summation, the mathematical symbol mod represents the modulo operation, c() is a pseudo-random sequence, and n f represents the system frame number corresponding to the first antenna port, N slot frame This represents the number of slots in each system frame, N symb slot n represents the quantity of OFDM symbols in each slot, s,f μ represents the slot number corresponding to the first antenna port, l 0 l' 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, 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, K TC This is a communication method that represents the number of comb teeth.

17. A communication device comprising a unit or module configured to perform the communication method described in any one of claims 1 to 8, or the communication method described in any one of claims 9 to 16.

18. A communication device including a processor, wherein the processor is configured to perform the communication method described in any one of claims 1 to 8, or the communication method described in any one of claims 9 to 16.

19. A computer-readable storage medium for storing computer programs or instructions, wherein when the instructions or the computer program are executed in a computer, the communication method described in any one of claims 1 to 8, or the communication method described in any one of claims 9 to 16, is executed.

20. A computer program including a computer program or instructions, wherein when the instructions are executed in a computer or the computer program is executed, a communication method according to any one of claims 1 to 8, or a communication method according to any one of claims 9 to 16, is executed.

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