CN118158736A

CN118158736A - Communication method and device, computer readable storage medium, terminal and network equipment

Info

Publication number: CN118158736A
Application number: CN202211565202.1A
Authority: CN
Inventors: 张萌
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2024-06-07

Abstract

A communication method and device, a terminal and a network device, wherein the method comprises the following steps: transmitting a reference signal; the frequency domain position of the reference signal is determined at least according to comb tooth offset and time domain granularity of the comb tooth offset, wherein the time domain granularity is used for indicating the applicable duration of the comb tooth offset. The scheme provided by the application is beneficial to inhibiting interference between reference signal resources.

Description

Communication method and device, computer readable storage medium, terminal and network equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communications method and apparatus, a computer readable storage medium, a terminal, and a network device.

Background

Currently, the demand of the communication system for the reference signal resource increases due to the increase of the number of users and the traffic. For example, in the R18 version, a New Radio (NR) system introduces a coherent joint transmission (Coherent Joint Transmission, CJT) mechanism. Under the CJT mechanism, the network device may perform coherent joint transmission with the terminal through a plurality of transmission receiving points (TRANSMITTER RECEIVER points, abbreviated as TRP), and along with the introduction of the CJT mechanism, the requirement for the uplink reference signal is correspondingly increased.

As the reference signal capacity increases in the system, more interference is introduced. Taking Sounding REFERENCE SIGNAL as an example, when the SRS capacity of the system increases, interference easily exists between SRS resources, and the interference between SRS resources may affect the estimation of the network device on the Channel State Information (CSI) of the downlink channel.

Disclosure of Invention

The technical problem to be solved by the embodiments of the present application is how to suppress interference between reference signal resources in a communication system.

In order to solve the above technical problem, in a first aspect, an embodiment of the present application provides a communication method, including: transmitting a reference signal; the frequency domain position of the reference signal is determined at least according to comb tooth offset and time domain granularity of the comb tooth offset, wherein the time domain granularity is used for indicating the applicable duration of the comb tooth offset.

Optionally, the reference signal is a sounding reference signal SRS.

Optionally, the time domain granularity is determined according to the number of symbols occupied by SRS resources in a single slot.

Optionally, the time domain granularity is determined according to a repetition factor of SRS resources.

Optionally, the time domain granularity is at least one SRS resource period.

Optionally, the time domain granularity is N symbols, and N is a positive integer; if n=1, the time division orthogonal cover code TD-OCC corresponding to the SRS resource is not available.

Optionally, the time domain granularity is N symbols, N is greater than or equal to L, L is the length of TD-OCC corresponding to SRS resources, and N and L are both positive integers.

Optionally, the time domain granularity and the length of the TD-OCC corresponding to the SRS resource have a mapping relationship.

Optionally, the time domain granularity is predefined by a protocol, or the time domain granularity is preconfigured by higher layer signaling.

In a second aspect, an embodiment of the present application provides a communication apparatus, including: the communication module is used for sending a reference signal; the frequency domain position of the reference signal is determined at least according to comb tooth offset and time domain granularity of the comb tooth offset, wherein the time domain granularity is used for indicating the applicable duration of the comb tooth offset.

In a third aspect, an embodiment of the present application provides a communication method, including: receiving a reference signal; the frequency domain position of the reference signal is determined at least according to comb tooth offset and time domain granularity of the comb tooth offset, wherein the time domain granularity is used for indicating the applicable duration of the comb tooth offset.

Optionally, the reference signal is a sounding reference signal SRS.

Optionally, the time domain granularity is a period of at least one SRS resource.

Optionally, before receiving the reference signal, the method further includes: and sending resource indication information, wherein the resource indication information is at least used for indicating the comb tooth offset and/or the time domain granularity of the comb tooth offset.

In a fourth aspect, an embodiment of the present application provides a communication apparatus, including: a communication module for receiving a reference signal; the frequency domain position of the reference signal is determined at least according to comb tooth offset and time domain granularity of the comb tooth offset, wherein the time domain granularity is used for indicating the applicable duration of the comb tooth offset.

In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, causes the communication method provided in the first or third aspect described above to be performed.

In a sixth aspect, an embodiment of the present application provides a terminal, including a memory and a processor, where the memory stores a computer program executable on the processor, and the processor executes the steps of the communication method provided in the first aspect when the processor executes the computer program.

In a seventh aspect, an embodiment of the present application provides a network device, including a memory and a processor, where the memory stores a computer program executable on the processor, and where the processor executes the steps of the communication method provided in the third aspect when the computer program is executed.

Compared with the prior art, the technical scheme of the embodiment of the application has the following beneficial effects:

In the scheme of the embodiment of the application, the reference signal is sent, wherein the frequency domain position of the reference signal is at least determined according to comb tooth offset and the time domain granularity of the comb tooth offset, and the time domain granularity is used for indicating the applicable time length of the comb tooth offset. In the above scheme, the time domain granularity of the comb teeth offset is considered when the reference signal adopts the comb teeth structure on the frequency domain, and because the time domain granularity is used for indicating the applicable time length of the comb teeth offset, different time domain positions can adopt different comb teeth offset, and further, the randomization of the frequency domain positions is realized by adopting different comb teeth offset, thereby being beneficial to inhibiting the interference between the reference signal resources.

Drawings

FIG. 1 is a flow chart of a communication method according to an embodiment of the application;

FIG. 2 is a schematic diagram of a first SRS resource in an embodiment of the present application;

FIG. 3 is a diagram of a second SRS resource in an embodiment of the present application;

FIG. 4 is a diagram of a third SRS resource in an embodiment of the present application;

FIG. 5 is a diagram of a fourth SRS resource in an embodiment of the present application;

FIG. 6 is a diagram of a fifth SRS resource in an embodiment of the present application;

fig. 7 is a schematic structural diagram of a data transmission device according to an embodiment of the present application;

Fig. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application.

Detailed Description

It should be noted that, the communication system applicable to the embodiment of the present application includes, but is not limited to, a third generation system (3 th-generation, abbreviated as 3G), a long term evolution (long term evolution, abbreviated as LTE) system, a fourth generation system (4 th-generation, abbreviated as 4G), a fifth generation (5 th-generation, abbreviated as 5G) system, a New Radio (abbreviated as NR) system, and a future evolution system or a plurality of communication fusion systems. The 5G system may be a non-independent Networking (NSA) 5G system or an independent networking (standalone, SA) 5G system. The scheme of the embodiment of the application can be also applied to various new communication systems in the future, such as 6G, 7G and the like.

A terminal in an embodiment of the present application may refer to various forms of User Equipment (UE), an access terminal, a subscriber unit, a subscriber Station, a Mobile Station (MS), a remote Station, a remote terminal, a Mobile device, a User terminal, a terminal device (Terminal Equipment), a wireless communication device, a User agent, or a User Equipment. The terminal may also be a cellular phone, a cordless phone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal in a future 5G network or a terminal in a future evolved public land mobile network (Public Land Mobile Network, PLMN) and so on, which the embodiments of the present application are not limited.

The network device in the embodiment of the present application may also be referred to as an access network device, for example, may be a Base Station (BS) (also referred to as a base station device), where the network device is a device deployed in a radio access network (Radio Access Network, RAN) to provide a wireless communication function. For example, the device for providing a base station function in the second generation (2 nd-generation, abbreviated as 2G) network includes a base radio transceiver station (base transceiver station, abbreviated as BTS), the device for providing a base station function in the third generation (3 rd-generation, abbreviated as 3G) network includes a node B (NodeB), the device for providing a base station function in the fourth generation (4 th-generation, abbreviated as 4G) network includes an evolved NodeB (eNB), the device for providing a base station function in the wireless local area network (wireless local area networks, abbreviated as WLAN) is an Access Point (AP), the next generation base station node (nextgeneration node base station, abbreviated as gNB) in NR, and the node B (ng-eNB) continuing to evolve, wherein the gNB and the terminal device communicate using NR technology, and the ng-eNB and the terminal device communicate using evolved universal terrestrial radio access (Evolved Universal Terrestrial Radio Access, abbreviated as E-UTRA) technology, and the gNB and the ng-eNB can be connected to the 5G core network. The network device in the embodiment of the present application further includes a device for providing a base station function in a new communication system in the future, and the like.

As described in the background, as the reference signal capacity increases in the system, more interference is introduced.

In order to solve the technical problem, an embodiment of the present application provides a communication method, in a scheme of the embodiment of the present application, a reference signal is sent, where a frequency domain position of the reference signal is determined at least according to comb teeth offset and a time domain granularity of the comb teeth offset, and the time domain granularity is used to indicate a time length for which the comb teeth offset is applicable. In the above scheme, the time domain granularity of the comb teeth offset is considered when the reference signal adopts the comb teeth structure on the frequency domain, and because the time domain granularity is used for indicating the applicable time length of the comb teeth offset, different time domain positions can adopt different comb teeth offset, and further, the randomization of the frequency domain positions is realized by adopting different comb teeth offset, thereby being beneficial to inhibiting the interference between the reference signal resources.

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below.

Referring to fig. 1, fig. 1 is a flow chart of a communication method according to an embodiment of the application. The method shown in fig. 1 may be performed by a terminal. The communication method shown in fig. 1 may include:

Step S11: and transmitting a reference signal, wherein the frequency domain position of the reference signal is determined at least according to comb tooth offset and the time domain granularity of the comb tooth offset, and the time domain granularity is used for indicating the applicable duration of the comb tooth offset.

It should be noted that, in the embodiment of the present application, the reference signal may be a reference signal transmitted on an Uplink (UL) or a reference signal transmitted on a side Uplink (Sidelink SL). More specifically, the reference signal may be a reference signal that may be transmitted on UL or SL in an existing communication system, or may be a reference signal that may be transmitted on UL or SL in a future communication system. The solution provided by the embodiment of the present application will be described herein by taking SRS as an example. In other embodiments, the reference signal may also be a Demodulation reference signal (DMRS for short), a Phase-tracking reference signal (PTRS for short), or the like.

The configuration or configuration information mentioned in the present application may be configured by the network layer through higher layer signaling (such as radio resource Control (Radio Resource Control, abbreviated as RRC) signaling, or configured through a medium access Control-Control Element (Medium Access Control-Control Element, abbreviated as MAC-CE), or configured through downlink Control information (Downlink Control Information, abbreviated as DCI).

Comb teeth offset as referred to in the present applicationIdentical, it can be understood as/>, of the same antenna port of SRS resourceThe same applies. Or comb offset/>Can be understood as/>, of the same antenna port

In an implementation, the terminal may first determine an SRS resource, which may include a frequency domain position (frequency-domain position) of the SRS and a time domain position (time-domain starting position) of the SRS, and then transmit the SRS at the determined time-frequency position. Accordingly, the network device receives the SRS. More specifically, the terminal may receive resource configuration information from the network device, and the terminal may determine SRS resources according to the resource configuration information.

Wherein the time domain position of the SRS may be determined according to one or more of: time domain starting position, number of occupied symbols and repetition factor. It should be noted that, in the embodiment of the present application, the symbol refers to an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, abbreviated as OFDM) symbol.

Specifically, the time domain start position may be denoted as l ₀ for indicating the first symbol in a single slot for transmitting SRS. The number of occupied symbols may be denoted nrofSymbol for indicating the number of symbols used for transmitting SRS within a single slot. Assuming that the number of occupied symbols is denoted as X, the symbols in a single slot, i ₀～(l₀ + X-1), are used for transmission of SRS. The repetition factor may be denoted RepetitionFactor for indicating the number of repeated symbols at SRS frequency hopping. Assuming that the repetition factor is denoted as R, frequency hopping at the resource block (Resoure Block, abbreviated RB) level is performed in units of R symbols within a single slot.

Further, when the terminal is configured to transmit the SRS in a periodic (periodic) or semi-persistent (semi-persistent) manner, the time domain position of the SRS also depends on the SRS resource period and slot offset (slot offset). Let SRS resource period be denoted as T, i.e. the terminal performs SRS transmission every T slots.

Further, the frequency domain position of the SRS refers to a frequency at which the SRS is transmitted, and more specifically, the frequency domain position of the SRS may refer to a frequency position of a subcarrier at which the SRS is transmitted.

Specifically, the frequency domain position of the SRS depends on the RB in which the SRS is located and the subcarriers in which the SRS is located in the RB. Wherein, the SRS adopts a comb structure on the frequency domain, and the subcarrier where the SRS is located in the RB is determined by the comb structure of the SRS resource.

Specifically, the comb structure of SRS in the frequency domain may depend on the transmission comb number (transmission comb number) and comb offset (comb offset). For a single terminal, SRS is transmitted every K _TC subcarriers in the frequency domain, and K _TC is the number of transmission comb teeth. K _TC is a positive integer greater than 1, for example, K _TC =2, or K _TC =4, or K _TC =8, or K _TC =16, or the like. Further, the comb teeth are offsetRefers to the offset of the subcarrier transmitting SRS in K _TC subcarriers. More specifically,/>The value range of (2) is/>

The comb offset may be configured by higher layer parameters, e.g., by higher layer parameters transmissioncombsIn the existing scheme, the time domain granularity of comb teeth offset is not considered when the comb teeth offset is configured by a high layer. Specifically, the comb offset adopted at each time domain position of the SRS resource is the comb offset/>, indicated by the parameter transmissionComb

In the scheme of the embodiment of the application, the comb teeth are offsetIntroducing time domain granularity for indicating comb teeth offset/>And the applicable time length is long, so that different comb tooth offsets can be adopted for different time domain positions, and further, the randomization of the frequency domain positions is realized by adopting the different comb tooth offsets, thereby being beneficial to inhibiting the interference between SRS resources.

In a first embodiment of the application, the network device may configure the terminal with a time domain granularity of comb offset. Specifically, the network device may send resource configuration information to the terminal, where the resource configuration information may include a comb offset and a time domain granularity of the comb offset. More specifically, the resource configuration information includes a plurality of comb offsets and a time domain granularity of the comb offsets. The time domain granularity of different comb tooth offsets of the SRS resource may be the same or different. For example, the resource configuration information includes a first comb offsetAnd second comb offset/>Wherein the first comb teeth offset/>And second comb offset/>Or the first comb offset/>And second comb offset/>Is different in time domain granularity.

In one example, the teeth of the comb are offsetThe time domain granularity of (a) is N symbols, which represents comb teeth offset/>The method is applicable to N symbols, wherein N is a positive integer. Alternatively, the N symbols must be consecutive symbols.

The network layer can send indication information through high-layer signaling to indicate whether SRS sent by the terminal supports comb offsetMultiple locations are supported within SRS resources.

The count of N symbols may initially be the first SRS OFDM symbol within the SRS resource. For example, one SRS resource includes 4N OFDM symbols, and then the comb offsets from the 1 st symbol to the nth symbol are the same, the comb offsets from the n+1st symbol to the 2nth symbol are the same, the comb offsets from the 2n+1st symbol to the 3 nth symbol are the same, and the comb offsets from the 1 st symbol to the 4 nth symbol are the same. Wherein, the four comb teeth can be different from each other.

Specifically, if n=1, the comb teeth are offsetOnly 1 symbol for transmitting SRS. In other words, the comb teeth adopted by adjacent two symbols are different in offset. For example, the frequency domain position corresponding to symbol l is according to/>Determining the frequency domain position corresponding to the symbol l ₁ +1 according to/>Determine, and/>

If N > 1 (e.g., N=2, or N=4), the comb teeth are offsetIs applicable to N consecutive symbols. More specifically, comb teeth offset/>Which applies to N consecutive symbols within a single slot. For example, the frequency domain locations corresponding to symbols l ₁ through l ₁ +N-1 are according to/>Determining the frequency domain positions corresponding to the symbols l ₁ +N to the symbols l ₁ +2N-1 according to/>Determine, and/>

In another example, the teeth of the comb are offsetIs the continuous M transmissions or duration of periodic SRS resources or semi-persistent SRS, i.e./>The time domain granularity of (2) is M cycles or a duration. For example, the period of the periodic SRS resource-1 is 10ms, and then the network side can configure comb offset/>The time domain granularity of 4, which means that the comb offset of the transmission of the SRS resource-1 of 4 consecutive periods is the same, then the next transmission of the SRS resource-1 of 4 periods can be offset with another comb, and so on. Or the period of the periodic SRS resource-1 is 10ms, and the network side can be configured with comb offset/>The comb offset for multiple transmissions of periodic SRS resource-1 within 40ms is the same, then the next transmission of periodic SRS resource-1 within 40ms may be offset with another comb, and so on.

In another example, the network layer may configure a length of time through higher layer signaling, indicating comb offset of the same antenna port for all SRS resources during the length of timeThen, immediately after that, in the next same time period, the comb offset of the same antenna port of all SRS resources may select another value, and so on. That is, the time domain granularity of the comb offset is the length of time of the higher layer signaling configuration.

In another example, the teeth of the comb are offsetMay be related to SRS resource repeat transmission factor (repetitionfactor). Comb teeth offset/>The time domain granularity of (c) may be no greater than the repetition transmission factor and may be capable of dividing the repetition transmission factor by one or more positive integers or divided by the repetition transmission factor. Optionally, the repeat transmission factor is offset from the comb teeth/>There may be a one-to-one correspondence of time domain granularity.

In another example, the teeth of the comb are offsetThe time domain granularity of (a) is M SRS resource periods, which represents/>The time domain granularity of (a) is M cycles, i.e. comb offset/>The method is applicable to M SRS resource periods, wherein M is a positive integer.

Specifically, if m=1, the comb teeth are offsetOnly for 1 SRS resource period. In other words, comb teeth offset/>Can be applied to each time domain position of 1 SRS resource in the SRS resource period. For example/>, in a certain SRS resourceAnd m=1, then represents/>, corresponding to each time domain position in the SRS resourceAll 0.

If M > 1 (e.g., M=2, or M=4), the comb teeth are offsetThe method is suitable for M SRS resource periods. More specifically, comb teeth offset/>The method is applicable to M continuous SRS resource periods. In other words, each time domain position of the same SRS resource in M consecutive SRS resource periods corresponds to/>The same applies.

It should be noted that, in other embodiments, the time domain granularity of the comb offset may be predefined by the protocol. For example, if the network device is not configured with a comb offset time domain granularity, then m=1. As another example, if the network device is not configured with a comb offset time domain granularity, n=1.

In a second embodiment of the present application, the time domain granularity of the comb offset is N symbols, and the value of N is determined according to the number of symbols occupied by SRS resources in a single slot. Wherein, it is assumed that the number of symbols occupied by SRS resources in a single slot is denoted as X, and the value of N is associated with the value of X.

In one example, n=x. I.e. the same comb offset is used on each symbol in the same slot.

Referring to fig. 2, fig. 2 is a schematic diagram of a first SRS resource in an embodiment of the present application.

As shown in fig. 2, the terminal is configured with 2 SRS resources, one of which is located in slot 1 and the other of which is located in slot 2. Wherein, in the SRS resource of the time slot 1: the SRS bandwidth is 8 RBs, the occupied symbol number is X=8, and the comb teeth offset isAnd/>Time domain granularity n=8. In SRS resource at slot 2: SRS bandwidth is 8 RBs, occupied symbol number X=8, comb offset is/>And/>Time domain granularity n=8.

In a specific implementation, the network device may indicate the time domain granularity of the comb offset to the terminal, or the resource configuration information includes the number of symbols occupied by the SRS resource in a single slot, or the network device may not additionally indicate the time domain granularity of the comb offset to the terminal, and after the terminal receives the resource configuration information, the network device may determine the time domain granularity N of the comb offset according to the number X of symbols occupied by the SRS resource in the single slot in the resource configuration information. That is, there may be a correspondence between X and N. Wherein, the correspondence may be a one-to-one correspondence. Optionally, the correspondence is only that the network layer sends the indication information to instruct the SRS support comb offset sent by the terminal through the high-layer signalingCan only be used when multiple locations are supported within the SRS resource.

In another example, N < X. More specifically, N may divide X entirely. In other words the first and second phase of the process,Wherein a is more than 1 and less than or equal to N, and a is an integer.

In a specific implementation, the value of a may be predefined by the protocol, or may be configured for the terminal by the network device. Specifically, the network device sends resource configuration information to the terminal, where the resource configuration information may include: the number of symbols occupied by SRS resources within a single slot, and a first time domain granularity factor (i.e., a). Wherein the first time domain granularity factor is used to determine the time domain granularity of the comb offset.

Referring to fig. 3, fig. 3 is a schematic diagram of a second SRS resource in an embodiment of the present application. As shown in fig. 3, a=2.

Specifically, the terminal is configured with 2 SRS resources, where one SRS resource is located in slot 1 and the other SRS resource is located in slot 2. Wherein, in the SRS resource of the time slot 1: the SRS bandwidth is 8 RBs, the occupied symbol number is X=8, and the comb offset comprisesAnd/>And a=2, i.e./>And/>The time domain granularity of (2) is 4 symbols. Therefore, the comb teeth corresponding to the first 4 symbols in the occupied 8 symbols are shifted to/>Comb teeth offset corresponding to the last 4 symbols is/>Similarly, in SRS resources located in slot 2: SRS bandwidth is 8 RBs, number of occupied symbols x=8, comb offset includes/>And/>And a=2, the comb teeth corresponding to the first 4 symbols in the occupied 8 symbols are offset as/>Comb teeth offset corresponding to the last 4 symbols is/>

In a third embodiment of the present application, the time domain granularity of the comb offset is N symbols, and the value of N may be determined according to the repetition factor of the SRS resource. The repetition factor of the SRS resource is assumed to be R, and the value of N is associated with the value of R. The repetition factor of the SRS resource may also be referred to as a frequency hopping period of the SRS.

In one example, n=r. I.e. the same comb offset is used on each symbol in a single frequency hopping period. In other words, comb offset in the same sub-bandwidthThe same, comb offset/>, of two adjacent sub-bandwidthsDifferent.

Referring to fig. 4, fig. 4 is a schematic diagram of a third SRS resource in an embodiment of the present application.

As shown in fig. 4, a certain SRS resource is located in slot 1, and the SRS resource is: the SRS bandwidth is 8 RBs, the number of occupied symbols x=8, the RB-level frequency hopping (i.e. r=4) is performed with 4 symbols as a period, and the comb offset includesAnd/>And n=r. I.e./>And/>The time domain granularity of (2) is 4 symbols. In other words, the SRS bandwidth is divided into 2 sub-bandwidths, each of which occupies 4 RBs, and the comb offset in the 1 st sub-bandwidth is/>Comb offset in sub-band 2 is/>

In a specific implementation, the network device may indicate the time domain granularity of the comb offset to the terminal, or when the resource configuration information includes a repetition factor, the network device may not additionally indicate the time domain granularity of the comb offset to the terminal, and after the terminal receives the resource configuration information, the network device may determine the time domain granularity of the comb offset according to the repetition factor in the resource configuration information. Or n=r may be predefined by the protocol. That is, there may be a correspondence between R and N. Wherein, the correspondence may be a one-to-one correspondence. Optionally, the correspondence is only that the network layer sends the indication information to instruct the SRS support comb offset sent by the terminal through the high-layer signalingCan only be used when multiple locations are supported within the SRS resource.

In another example, N < R. More specifically, N may divide R entirely. In other words the first and second phase of the process,Wherein b is more than 1 and less than or equal to R, and b is an integer. In other words, comb offset/>, in the same sub-bandwidthDifferent, and each comb offset has a time domain granularity of N symbols.

In a specific implementation, the value of b may be predefined by the protocol or may be configured for the terminal by the network device. Specifically, the network device sends resource configuration information to the terminal, where the resource configuration information may include: a repetition factor of SRS resources, and a second time domain granularity factor (i.e., b). Wherein the second time domain granularity factor is used to determine the time domain granularity of the comb offset.

Referring to fig. 5, fig. 5 is a schematic diagram of a fourth SRS resource according to an embodiment of the present application. As shown in fig. 5, b=2.

Specifically, a certain SRS resource is located in slot 1, where: the SRS bandwidth is 8 RBs, the number of occupied symbols x=8, and frequency hopping at the RB level is performed with 4 symbols as a period (i.e., r=4). In addition, the SRS resource also includes 4 comb offsets (i.e.,And/>) And b=2. Therefore, the time domain granularity of each comb offset in the SRS resource is 2 symbols.

Referring to fig. 6, fig. 6 is a schematic diagram of a fifth SRS resource in an embodiment of the present application. As shown in fig. 6, b=4.

Specifically, a certain SRS resource is located in slot 1, where: the SRS bandwidth is 8 RBs, the number of occupied symbols x=8, and frequency hopping at the RB level is performed with 4 symbols as a period (i.e., r=4). In addition, the SRS resource also includes 4 comb offsets (i.e.,And/>) And b=4. Thus, the time domain granularity of each comb offset is 1 symbol.

In the fourth embodiment of the present application, in order to increase the SRS capacity in the system, a time-division orthogonal cover code (Time Division Orthogonal Cover Code, abbreviated as TD-OCC) may be further used to process the SRS sequence, so that multiple terminals may multiplex the same SRS sequence after SRS resource transmission processing.

In one example, both the time domain granularity of the comb offset and the TD-OCC cannot be enabled (active or active) simultaneously for the same SRS resource. In other words, for the same SRS resource, only one of the time domain granularity of the comb offset and the TD-OCC can be used.

For example, for a certain SRS resource, the frequency domain position corresponding to each symbol may be determined according to the time domain granularity of the comb offset, but the SRS sequence is not processed by using the TD-OCC, or the SRS sequence may be processed by using the TD-OCC, so as to obtain the processed SRS sequence, but the same comb offset is adopted on each symbol in the SRS resource.

In another example, the comb offset has a time domain granularity of N symbols, and if n=1, TD-OCC is not available. As described above, n=1 means that comb teeth corresponding to two adjacent symbols are different in offset, so that frequency domain positions corresponding to two adjacent symbols are different, and in this case, TD-OCC is not suitable, which is liable to cause SRS reception failure.

In yet another example, the comb offset has a time domain granularity of N symbols, N satisfying: n is more than or equal to L, N is an integer, and L is the length of TD-OCC. By adopting the scheme, the symbols corresponding to the same TD-OCC adopt the same comb tooth offset, so that the normal receiving of SRS is ensured, the SRS resource can be randomized by adopting the time domain granularity of the comb tooth offset, and the SRS capacity in the system can be enlarged by adopting the TD-OCC.

In yet another example, the comb offset has a time domain granularity of N symbols, and a mapping relationship between the time domain granularity and the length of the TD-OCC. The mapping relationship may be expressed as (N, L-set), where L-set represents a length set of TD-OCC, and the length set may include at least one length value indicating a length of TD-OCC.

Specifically, the terminal may be configured with a length set corresponding to N, where each length value L in the length set is less than or equal to N corresponding to the length set. The length set may be predefined by a protocol or may be preconfigured by higher layer signaling.

More specifically, the length set corresponding to N may include only 1 length value L, and the length value L is a factor of N. If n=6, then l=3; as another example, n=6, l=2.

Or the N corresponding length set may comprise a plurality of length values L, e.g. n=6, L-set comprising l=2 and l=4.

Further, within the time frame (i.e., N symbols) in which the same comb offset is used, the SRS sequence may be processed with multiple identical TD-OCCs, or the SRS sequence may be processed with different TD-OCCs.

For example, n=6, l=2, then the comb teeth are offsetThe SRS sequence transmitted over 6 symbols may be processed using 3 TD-OCCs of length 2 over the 6 symbols, respectively, where the 3 TD-OCCs may be the same TD-OCC or the 3 TD-OCCs may be different TD-OCCs.

For another example, n=6, L-set includes l=2 and l=4, and on 6 symbols where the comb offset remains unchanged, the SRS sequences transmitted on 6 symbols may be processed with 1 TD-OCC of length 2 and 1 TD-OCC of length 4, respectively.

In the fifth embodiment of the present application, in order to increase the capacity of SRS in the communication system, SRS frequency hopping may also be employed. Specifically, SRS hopping refers to hopping over RBs within a slot. Specifically, if the SRS resource includes a repetition factor R and the number of symbols occupied X in a single slot, and R < X, it indicates that the SRS resource supports frequency hopping on RBs in the slot.

In one example, both the time domain granularity of the comb offset and the SRS hopping cannot be enabled at the same time for the same SRS resource. In other words, for the same SRS resource, only one of the time domain granularity of the comb offset and SRS hopping can be used.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application, where the communication device shown in fig. 7 may be disposed in the terminal, and the device shown in fig. 7 may include:

a communication module 71 for transmitting a reference signal; the frequency domain position of the reference signal is determined at least according to comb tooth offset and time domain granularity of the comb tooth offset, wherein the time domain granularity is used for indicating the applicable duration of the comb tooth offset.

In a specific implementation, the communication device shown in fig. 7 may correspond to a chip having a communication function in a terminal; or corresponds to a chip or a chip module having a communication function included in the terminal, or corresponds to the terminal.

The embodiment of the application also provides another communication device, which comprises: a communication module for receiving a reference signal; the frequency domain position of the reference signal is determined at least according to comb tooth offset and time domain granularity of the comb tooth offset, wherein the time domain granularity is used for indicating the applicable duration of the comb tooth offset. The communication device may be deployed in the network apparatus described above. In a specific implementation, the communication device may correspond to a chip with a communication function in the network device; or corresponds to a chip or a chip module having a communication function included in the network device, or corresponds to the network device.

For more matters such as the working principle, the working method and the beneficial effects of the communication device in the embodiment of the present application, reference may be made to the above related description about the communication method, which is not repeated here.

The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, which when being executed by a processor, performs the communication method described above. The storage medium may include ROM, RAM, magnetic or optical disks, and the like. The storage medium may also include a non-volatile memory (non-volatile) or a non-transitory memory (non-transitory) or the like.

The embodiment of the application also provides a terminal, which comprises a memory and a processor, wherein the memory stores a computer program which can be run on the processor, and the processor executes the steps of the communication method when running the computer program. The terminal comprises, but is not limited to, a mobile phone, a computer, a tablet personal computer and other terminal equipment. The terminal may be a mobile phone, a computer, a tablet computer, a vehicle-mounted terminal, a wearable device, etc., but is not limited thereto.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application. The terminal shown in fig. 8 includes a memory 81 and a processor 82, the processor 82 being coupled to the memory 81, and the memory 81 may be located inside the terminal or outside the terminal. The memory 81 and the processor 82 may be connected by a communication bus. The memory 81 stores a computer program executable on the processor 82, and the processor 82 executes the steps of the communication method provided in the above embodiment when the computer program is executed.

The embodiment of the application also provides a network device, which comprises a memory and a processor, wherein the memory stores a computer program which can be run on the processor, and the processor executes the steps of the communication method when running the computer program.

It should be appreciated that in the embodiment of the present application, the processor may be a central processing unit (central processing unit, abbreviated as CPU), and the processor may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL processors, abbreviated as DSP), application Specific Integrated Circuits (ASIC), field programmable gate arrays (field programmable GATE ARRAY, abbreviated as FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an erasable programmable ROM (erasable PROM EPROM), an electrically erasable programmable ROM (ELECTRICALLY EPROM, EEPROM), or a flash memory. The volatile memory may be a random access memory (random access memory, RAM for short) which acts as an external cache. By way of example, and not limitation, many forms of random access memory (random access memory, RAM) are available, such as static random access memory (STATIC RAM, SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (double DATA RATE SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCHLINK DRAM, SLDRAM), and direct memory bus random access memory (direct rambus RAM, DR RAM).

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer program may be stored in or transmitted from one computer readable storage medium to another, for example, by wired or wireless means from one website, computer, server, or data center.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus and system may be implemented in other manners. For example, the device embodiments described above are merely illustrative; for example, the division of the units is only one logic function division, and other division modes can be adopted in actual implementation; for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units. For example, for each device or product applied to or integrated on a chip, each module/unit included in the device or product may be implemented in hardware such as a circuit, or at least some modules/units may be implemented in software program, where the software program runs on a processor integrated inside the chip, and the remaining (if any) part of modules/units may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module/unit contained in the device and product can be realized in a hardware manner such as a circuit, different modules/units can be located in the same component (such as a chip, a circuit module and the like) or different components of the chip module, or at least part of the modules/units can be realized in a software program, the software program runs on a processor integrated in the chip module, and the rest (if any) of the modules/units can be realized in a hardware manner such as a circuit; for each device, product, or application to or integrated with the terminal, each module/unit included in the device, product, or application may be implemented in hardware such as a circuit, where different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least some modules/units may be implemented in a software program, where the software program runs on a processor integrated within the terminal, and the remaining (if any) some modules/units may be implemented in hardware such as a circuit.

The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory RAM), a magnetic disk, or an optical disk, etc., which can store program codes.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In this context, the character "/" indicates that the front and rear associated objects are an "or" relationship.

The term "plurality" as used in the embodiments of the present application means two or more.

The first, second, etc. descriptions in the embodiments of the present application are only used for illustrating and distinguishing the description objects, and no order is used, nor is the number of the devices in the embodiments of the present application limited, and no limitation on the embodiments of the present application should be construed.

Although the present application is disclosed above, the present application is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the application, and the scope of the application should be assessed accordingly to that of the appended claims.

Claims

1. A method of communication, comprising:

Transmitting a reference signal;

The frequency domain position of the reference signal is determined at least according to comb tooth offset and time domain granularity of the comb tooth offset, wherein the time domain granularity is used for indicating the applicable duration of the comb tooth offset.

2. The communication method according to claim 1, wherein the reference signal is a sounding reference signal, SRS.

3. The communication method of claim 2, wherein the time domain granularity is determined according to a number of symbols occupied by SRS resources within a single slot.

4. The communication method of claim 2, wherein the time domain granularity is determined according to a repetition factor of SRS resources.

5. The communication method according to claim 2, wherein the time domain granularity is at least one SRS resource period.

6. The communication method according to claim 2, wherein the time domain granularity is N symbols, N being a positive integer; if n=1, the time division orthogonal cover code TD-OCC corresponding to the SRS resource is not available.

7. The communication method of claim 2, wherein the time domain granularity is N symbols,

N is more than or equal to L, L is the length of TD-OCC corresponding to SRS resources, and N and L are both positive integers.

8. The communication method according to claim 2, wherein the time domain granularity and the length of the TD-OCC corresponding to the SRS resource have a mapping relationship.

9. The communication method according to claim 1, characterized in that the time domain granularity is predefined by a protocol or the time domain granularity is preconfigured by higher layer signaling.

10. A communication device, comprising:

The communication module is used for sending a reference signal;

11. A method of communication, comprising:

receiving a reference signal;

12. The communication method according to claim 11, wherein the reference signal is a sounding reference signal, SRS.

13. The communication method of claim 12, wherein the time domain granularity is determined based on a number of symbols occupied by SRS resources within a single slot.

14. The communication method of claim 12, wherein the time domain granularity is determined according to a repetition factor of SRS resources.

15. The communication method according to claim 12, wherein the time domain granularity is a period of at least one SRS resource.

16. The communication method according to claim 12, wherein the time domain granularity is N symbols, N being a positive integer; if n=1, the time division orthogonal cover code TD-OCC corresponding to the SRS resource is not available.

17. The communication method according to claim 12, wherein the time domain granularity is N symbols, N is greater than or equal to L, L is a length of TD-OCC corresponding to SRS resources, and N and L are both positive integers.

18. The communication method of claim 12, wherein the time domain granularity and the length of the TD-OCC corresponding to the SRS resource have a mapping relationship.

19. The communication method of claim 11, wherein prior to receiving the reference signal, the method further comprises:

and sending resource indication information, wherein the resource indication information is at least used for indicating the comb tooth offset and/or the time domain granularity of the comb tooth offset.

20. A communication device, comprising:

A communication module for receiving a reference signal;

21. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, causes the communication method of any one of claims 1 to 9 or 11 to 19 to be performed.

22. A terminal comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor executes the steps of the communication method according to any of claims 1 to 9 when the computer program is executed.

23. A network device comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor executes the steps of the communication method according to any of claims 11 to 19 when the computer program is executed.