Method and apparatus for determining transmission resources of reference signals

Abstract

The application provides a method and device for determining a transmission resource of a reference signal, and relates to the technical field of communication. The method comprises the following steps: acquiring time-frequency resource information used by PSSCH transmission corresponding to a reference signal, the reference signal being used for beam management of sidelink communication; and determining a time unit used by the reference signal transmission in the sidelink and a time-frequency code resource in the time unit according to the time-frequency resource information. Through application of the technical solution of the application, a resource determination scheme required for reference signal transmission for beam management is provided in the sidelink communication, and the accuracy of beam management in the sidelink communication can be improved.

Description

Method and apparatus for determining the transmission resources of reference signals Technical Field

[0001] This application relates to the field of communication technology, and in particular to a method and apparatus for determining the transmission resources of a reference signal. Background Technology

[0002] With technological advancements, sidelink (SL) communication using higher millimeter-wave frequencies has become possible. When using millimeter-wave frequencies, analog beamforming or hybrid analog-digital beamforming is typically employed. Therefore, beam management is required on the sidelink, which can be achieved through a reference signal (RS).

[0003] However, there is currently a lack of a scheme for determining the resources required for the transmission of reference signals for beam management in sidelink communication. Summary of the Invention

[0004] This application proposes a method and apparatus for determining the transmission resources of a reference signal. In side-link communication, it provides a resource determination scheme for the transmission of a reference signal that can be used for beam management, thereby improving the accuracy of beam management in side-link communication.

[0005] A first aspect of this application provides a method for determining the transmission resources of a reference signal, comprising: acquiring time and frequency resource information used for transmission of a Physical Sidelink Control Channel (PSSCH) corresponding to the reference signal, wherein the reference signal is used for beam management of sidelink communication; and determining, based on the time and frequency resource information, the time unit used for transmission of the reference signal in the sidelink and the time and frequency code resources within the time unit.

[0006] In some embodiments of this application, the PSSCH transmission corresponds to the transmission of at least one reference signal, the transmission of which uses the same beam or different beams.

[0007] In some embodiments of this application, when the PSSCH transmission corresponds to the transmission of at least two reference signals, the transmission of different reference signals uses different time-domain resources.

[0008] In some embodiments of this application, determining the time unit used for the reference signal transmission and the time-frequency code resources within the time unit based on the time-frequency resource information includes: determining the time unit used for the reference signal transmission based on the time unit used for the PSSCH transmission; and determining the time-frequency code resources used for the reference signal transmission within the time unit used for the reference signal transmission by querying a preset mapping relationship based on the time unit and frequency domain sub-channel where the PSSCH transmission is located, wherein the preset mapping relationship includes a mapping relationship between the time-frequency resource information used for the PSSCH transmission and the time-frequency code resources used for the reference signal transmission.

[0009] In some embodiments of this application, determining the time unit used for the reference signal transmission based on the time unit used for the PSSCH transmission includes: starting from a first time unit after the time unit where the PSSCH transmission is located, determining the time units used for multiple reference signal transmissions respectively, wherein the first time unit is the first time unit with reference signal resources that meets the processing timing requirements, and the timing requirements are that the time difference between the transmission of the reference signal and the PSSCH transmission is greater than a time threshold.

[0010] In some embodiments of this application, the frequency domain subchannel includes the starting subchannel used by the PSSCH transmission; the step of determining the time-frequency code resources used by the reference signal transmission in the time unit used by the reference signal transmission, based on the time unit and frequency domain subchannel of the PSSCH transmission, by querying a preset mapping relationship, includes: determining the time-frequency code resources used by the reference signal transmission corresponding to the time unit and the starting subchannel of the PSSCH transmission.

[0011] In some embodiments of this application, the frequency domain sub-channel includes the sub-channel occupied by the PSSCH transmission; the step of determining the time-frequency code resources used by the reference signal transmission in the time unit used by the reference signal transmission, based on the time unit and frequency domain sub-channel of the PSSCH transmission, by querying a preset mapping relationship, includes: determining the time-frequency code resources used by the reference signal transmission corresponding to the time unit and the occupied sub-channel of the PSSCH transmission.

[0012] In some embodiments of this application, if it is determined that the obtained time-frequency code resource contains at least two resources, the time-frequency code resource used for the reference signal transmission is determined by one of the following:

[0013] Randomly select one resource from the at least two resources as the time-frequency code resource used for the reference signal transmission; determine one resource from the at least two resources as the time-frequency code resource used for the reference signal transmission based on the modulus of the total number of resources of the at least two resources and the information contained in the sidelink control information (SCI) associated with the PSSCH.

[0014] In some embodiments of this application, the method further includes: when the PSSCH transmission corresponds to transmissions within at least two time units, mapping the transmissions to different time-frequency code resources within the time units according to the preset mapping relationship.

[0015] In some embodiments of this application, the time unit includes one of the following:

[0016] Time slot; frame; subframe; Orthogonal Frequency Division Multiplexing (OFDM) symbol; second; microsecond.

[0017] In some embodiments of this application, the method further includes one of the following:

[0018] Based on the indication information contained in the SCI, determine whether there is a corresponding reference signal transmission for the PSSCH transmission associated with the SCI; based on the indication information, determine the actual transmission of the target number of reference signals corresponding to the PSSCH transmission associated with the SCI, and the time and frequency resource information used by the actual transmission of the corresponding reference signals; based on the indication information, determine the number of times the reference signals corresponding to the PSSCH transmission associated with the SCI are transmitted.

[0019] In some embodiments of this application, the reference signal includes one of the following:

[0020] Channel-state information reference signal (CSI-RS); Sidelink SS block (S-SSB), where SS is an abbreviation for Synchronization signal; Sounding Reference Signal (SRS).

[0021] In some embodiments of this application, the method is performed by a first user equipment (UE) or by a second UE.

[0022] A second aspect of this application provides a UE, including: a transceiver module configured to acquire time and frequency resource information used for PSSCH transmission corresponding to a reference signal, the reference signal being used for beam management in sidelink communication; and a processing module configured to determine, based on the time and frequency resource information, a time unit used for the transmission of the reference signal in the sidelink and time and frequency code resources within the time unit.

[0023] A third aspect of this application provides a communication device comprising: a transceiver; a memory; and a processor, which are respectively connected to the transceiver and the memory, and configured to control the transmission and reception of wireless signals of the transceiver by executing computer-executable instructions on the memory, and to implement the method of the first aspect of this application.

[0024] A fourth aspect of this application provides a computer storage medium storing computer-executable instructions; when executed by a processor, the computer-executable instructions can implement the method of the first aspect of this application.

[0025] This application provides a method and apparatus for determining the transmission resources of a reference signal. In sidelink communication, it provides a resource determination scheme for reference signal transmission that can be used for beam management, accurately determining the time-frequency code resources used for reference signal transmission. Specifically, firstly, the time-frequency resource information used for PSSCH transmission corresponding to the reference signal is obtained. This reference signal is used for beam management in sidelink communication. Then, based on the time-frequency resource information used for PSSCH transmission, the time unit used for the reference signal transmission in the sidelink and the time-frequency code resources within that time unit are determined. Subsequently, the receiving UE can determine the time unit used for the reference signal transmission corresponding to the sending UE and the time-frequency code resources within that time unit based on the time-frequency resource information used for PSSCH transmission. This allows for better measurement of a beam with higher quality, and then sidelink communication between UEs can be performed using this higher-quality beam, improving the accuracy of beam management in sidelink communication.

[0026] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0028] Figure 1 is a schematic diagram of an example architecture according to an embodiment of this application;

[0029] Figure 2 is a flowchart illustrating a method for determining the transmission resources of a reference signal according to an embodiment of this application;

[0030] Figure 3 is a flowchart illustrating a method for determining the transmission resources of a reference signal according to an embodiment of this application;

[0031] Figure 4 is a flowchart illustrating a method for determining the transmission resources of a reference signal according to an embodiment of this application;

[0032] Figure 5 is a flowchart illustrating a method for determining the transmission resources of a reference signal according to an embodiment of this application;

[0033] Figure 6 is a block diagram of a UE device according to an embodiment of this application;

[0034] Figure 7 is a schematic diagram of a communication device according to an embodiment of this application;

[0035] Figure 8 is a schematic diagram of the structure of a chip provided in an embodiment of this application. Detailed Implementation

[0036] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. It should be noted that, unless otherwise specified, the embodiments of this application and the features in the embodiments can be combined with each other.

[0037] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a” and “the” as used in the embodiments of this application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0038] It should be understood that although the terms first, second, third, etc., may be used to describe various information in the embodiments of this application, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to a determination."

[0039] To facilitate understanding, the terminology used in this embodiment will be introduced first.

[0040] 1. Sidelink (SL)

[0041] The communication interface between UEs is called the PC-5 interface. The link for data transmission between UEs on the PC-5 interface is called the sidelink. As shown in Figure 1, based on the correspondence between the first UE (sender UE) 11 and the second UE (receiver UE) 12, three transmission modes are supported on the sidelink: unicast, multicast, and broadcast. The first UE 11 transmits the SCI on the Physical Sidelink Control Channel (PSCCH) and the second-stage SCI on the PSSCH channel. For data packets with Hybrid Automatic Repeat reQuest (HARQ) feedback enabled, the second UE 12 performs HARQ-ACK feedback on the PSSCH on the Physical Sidelink Feedback Channel (PSFCH).

[0042] 2. Beam Management

[0043] In this embodiment, beam management dynamically selects the direction and frequency of beams for communication between UEs (such as the first UE 11 and the second UE 12) based on channel quality. The beam involved in this embodiment can refer to "beam," or be called spatial relation information, spatial setting, Spatial Rx parameter, Tx spatial filter, spatial domain receive filters, TCI (transmission configuration indication) status, QCL (quasi-co-location) type D, etc.

[0044] 3. Reference Signal (RS)

[0045] The reference signal is a "pilot" signal, a known signal provided by the first UE 11 to the second UE 12 for channel estimation or channel sounding. In this embodiment, it can be used for beam management in sidelink communication.

[0046] The continuous emergence of new-generation internet applications has placed higher demands on wireless communication technologies, driving their continuous evolution to meet application needs. To better support vehicle-to-everything (V2X) communication, LTE Vehicle-to-X (V2X) technology was developed in Long Term Evolution (LTE) Release 14, supporting direct communication between V2X devices (such as vehicles-to-vehicle, vehicle-to-pedestrian, and vehicle-to-roadside nodes) via direct links. Release 15 further enhanced LTE V2X technology, supporting features such as carrier aggregation. Following the release of 5G New Radio (NR) technology in Release 15, 3GPP initiated work on supporting V2X communication using the NR interface, completing 5G Sidelink in Release 16, supporting direct communication between V2X devices via NR technology. Release 17 further enhanced NR Sidelink in areas such as energy efficiency and reliability.

[0047] Beam management support was not considered in LTE V2X and Release 16 NRV2X because the primary frequency bands for V2X applications at that time were located in lower spectrum areas. However, with technological advancements, using higher millimeter-wave bands for Sidelink communication has become possible. When using millimeter-wave bands (such as the FR2 band), analog beamforming or hybrid analog-digital beamforming is typically employed. Therefore, beam management support is required in Sidelink.

[0048] Beam management in NR downlink (DL) or uplink (UL) communication is performed using reference signals such as the downlink synchronization signal and physical broadcast channel (PBCH) block (SSB), CSI-RS, or uplink SRS. In Rel-16 / 17, the reference signal format transmitted on the SL is similar to that of the DL reference signal, but it can only be transmitted along with the PSSCH, and uses a portion of the resource elements (REs) on the corresponding PSSCH's Orthogonal Frequency Division Multiplexing (OFDM) symbols as the time-frequency resources for transmission. The corresponding PSSCH can be transmitted using other REs on the same OFDM symbol not used by the reference signal.

[0049] When using analog beamforming or hybrid analog-digital beamforming, the transmit / receive analog beams used by the same UE on the same OFDM symbol are identical. Therefore, according to the resource configuration scheme for reference signals in DL / UL communication, the CSI-RS transmitted on the SL can only use the same analog beam as its corresponding PSSCH. However, beam management needs to support the same UE using different beams for transmitting or receiving reference signals. If the resource configuration scheme for reference signals in DL / UL communication is still used, it will result in unnecessary duplicate PSSCH transmissions, reducing the resource utilization efficiency of the sidelink. Therefore, sidelink communication needs to support the transmission of reference signals independently of the PSSCH, meaning that the resources used for reference signal transmission do not overlap with those used for PSSCH transmission. If the reference signal is transmitted independently of the PSSCH, the resource determination scheme required for reference signal transmission for beam management needs to be reconfigured.

[0050] Therefore, this embodiment proposes a method and apparatus for determining the transmission resources of reference signals. In side link communication, it provides a resource determination scheme for the transmission of reference signals that can be used for beam management, which can improve the accuracy of beam management in side link communication.

[0051] The method and apparatus for determining the transmission resources of the reference signal provided in this application will be described in detail below with reference to the accompanying drawings.

[0052] Figure 2 illustrates a flowchart of a method for determining transmission resources of a reference signal according to an embodiment of this application. As shown in Figure 2, this method is applied to the transmitting end UE side (as shown in Figure 1, the first UE 11) and may include the following steps.

[0053] Step 201: The first UE obtains the time and frequency resource information used for the PSSCH transmission corresponding to the reference signal.

[0054] The reference signal is used for beam management in side link communication.

[0055] In this embodiment, the reference signal can be transmitted together with the PSSCH, but the resources used for the reference signal transmission do not overlap with those used for the PSSCH transmission. That is, the resources used by the UE to transmit the reference signal in sidelink communication are resources other than those used for its corresponding PSSCH transmission. This allows the reference signal to be transmitted independently of the PSSCH, thus enabling the transmission of multiple reference signals for a single PSSCH. In some examples, the PSSCH transmission corresponds to the transmission of at least one reference signal, which can use the same beam or different beams.

[0056] Compared to the reference signal resource configuration scheme in DL / UL communication, the reference signal can be transmitted separately on the side link without using a portion of the REs on a portion of the OFDM symbols of the corresponding PSSCH as transmission resources. Using different beams to transmit the reference signal for the same UE can effectively reduce redundant and unnecessary PSSCH transmissions and improve the resource utilization efficiency of the side link.

[0057] The time and frequency resource information used for PSSCH transmission may include relevant information about the time and frequency resources used for PSSCH transmission, including time-domain and frequency-domain resource information used for PSSCH transmission in the side link.

[0058] Step 202: The first UE determines the time unit and time-frequency code resources used for reference signal transmission in the side link based on the time-frequency resource information used for PSSCH transmission.

[0059] To enable the reference signal to be transmitted independently of the PSSCH, the reference signal will be transmitted using resources that do not overlap with the PSSCH resources. In this embodiment, a mapping relationship of the resource information used between the reference signal and its corresponding PSSCH can be pre-configured. Then, based on the time and frequency resource information used for PSSCH transmission, the time unit used for the corresponding reference signal transmission is determined. By querying the mapping relationship, the time and frequency code resources used for the reference signal transmission within the time unit are determined. The determined time and frequency code resources can be used to determine the time domain resources, and / or frequency domain resources, and / or code domain resources used for reference signal transmission in the side link.

[0060] The method for determining the transmission resources of the reference signal provided in this embodiment provides a resource determination scheme for the transmission of the reference signal that can be used for beam management in side link communication. It can accurately determine the resources used for the transmission of the reference signal and improve the accuracy of beam management in side link communication.

[0061] Figure 3 illustrates a flowchart of a method for determining transmission resources of a reference signal according to an embodiment of this application. Based on the embodiment shown in Figure 2, as shown in Figure 3, this method is applied to the transmitting end UE side (as shown in the first UE 11 in Figure 1) and may include the following steps.

[0062] Step 301: The first UE obtains the time and frequency resource information used for the PSSCH transmission corresponding to the reference signal.

[0063] The reference signal is used for beam management in sidelink communication. In some examples, the reference signal used for sidelink beam management may include one of CSI-RS, Direct S-SSB, and SRS, or other RS ​​signal formats. It should be noted that, for ease of understanding, the following explanation will primarily use CSI-RS as an example.

[0064] In some examples, the PSSCH transmission may correspond to the transmission of at least one reference signal, which may use the same beam or different beams.

[0065] For example, a PSSCH transmission can correspond to M CSI-RS transmissions and M CSI-RS transmission resources, where one CSI-RS transmission resource corresponds to one CSI-RS transmission; these M CSI-RS transmissions can use the same beam or different beams.

[0066] In some examples, when the PSSCH transmission corresponds to the transmission of at least two reference signals, the transmission of different reference signals uses different time-domain resources.

[0067] For example, a single PSSCH transmission can correspond to M CSI-RS transmissions. When M ≥ 2, different CSI-RS transmissions use different time-domain resources. This could mean different CSI-RS transmissions are located in different time units, or on different OFDM symbols within the same time unit. The value of M can be predefined, pre-configured, or obtained through downlink signaling configuration.

[0068] In this embodiment, the time unit may include one of the following: slot, frame, subframe, OFDM symbol, second, and microsecond. It should be noted that, for ease of understanding, the following explanation will primarily use slot as an example. In this embodiment, a slot can be a physical slot or a logical slot. For example, all slots available for SL transmission can be configured as logical slots, or slots in a resource pool can be configured as logical slots, with slotn+1 being the next logical slot after slotn.

[0069] Step 302: The first UE determines the time unit used for reference signal transmission based on the time unit used for PSSCH transmission.

[0070] The process of determining the time unit used for reference signal transmission may include starting from the next time unit after the time unit in which the PSSCH transmission takes place, and sequentially determining the time unit used for each reference signal transmission. For example, assuming the PSSCH transmission is in slot n, the corresponding M CSI-RS transmissions are located in slot n+x1, slot n+x2, slot n+x3, ..., slot n+xM, respectively.

[0071] In some examples, step 302 may specifically include: starting from the first time unit after the time unit in which the PSSCH transmission occurs, determining the time units to be used for the transmission of multiple reference signals respectively, wherein the first time unit is the first time unit in which there are reference signal resources that meets the processing timing requirements. The timing requirements are that the time difference between the transmission of the reference signal and the transmission of the PSSCH is greater than a time threshold, which may be predefined, preconfigured, or configured by downlink signaling.

[0072] For example, CSI-RS resources are configured on slots with a period of T slots. x1 is the first slot containing CSI-RS resources after slot n, where n+x1 satisfies the processing timing requirements. Satisfying the processing timing requirements means that the time difference between the CSI-RS transmission and the corresponding PSSCH transmission exceeds a minimum time threshold (time threshold). This time threshold can be predefined, pre-configured, or configured via downlink signaling; for example, it can also be 0. Thus, after slot n where the PSSCH transmission is located, slot n+x1 can be determined based on this configuration. After obtaining slot n+x1 (the first time unit), slot n+x2, slot n+x3, ..., slot n+xk are calculated sequentially using the formula xk = x1 + (k-1)*T, thereby obtaining the time unit used for each reference signal transmission.

[0073] Step 303: In the time unit used for reference signal transmission, the first UE determines the time-frequency code resources used for reference signal transmission by querying a preset mapping relationship based on the time unit and frequency domain sub-channel where the PSSCH transmission is located.

[0074] The preset mapping relationship includes the mapping relationship between the time and frequency resource information used for PSSCH transmission and the time and frequency code resources used for reference signal transmission.

[0075] For example, determine the CSI-RS resource set (the time-frequency code set used to transmit the CSI-RS reference signal within this time unit) in slot n+xk (the time unit used for reference signal transmission). The resources in this CSI-RS resource set do not overlap with the resources used for PSSCH transmission. This CSI-RS resource set can contain Y CSI-RS resources (time-frequency code resources). CSI-RS transmitted on different CSI-RS resources can be orthogonally separated (non-overlapping) using time division, frequency division, or code division methods. Divide these Y CSI-RS resources into M groups, where the k-th group corresponds to the time-frequency code resources that can be used in the k-th CSI-RS transmission out of the M CSI-RS transmissions; divide the k-th group of CSI-RS resources into N*T groups; where T is the slot period for CSI-RS resource configuration; and N is the number of frequency domain subchannels in the resource pool. This allows us to determine one set of CSI-RS resources from the N*T sets of CSI-RS resources based on the slot and subchannel positions used for PSSCH transmission corresponding to the CSI-RS. This set serves as the time-frequency code resource for the k-th CSI-RS transmitted in slot n+xk (assuming there is only one CSI-RS resource in this set). If there are at least two CSI-RS resources in this set, one of them can be selected as the time-frequency code resource for the k-th CSI-RS. This method accurately determines the time-frequency code resource used for reference signal transmission.

[0076] In some examples, the frequency domain subchannel in which the PSSCH transmission takes place may include the starting subchannel used by the PSSCH transmission; correspondingly, step 303 may specifically include: determining the time-frequency code resources used by the reference signal transmission corresponding to the time unit and starting subchannel in which the PSSCH transmission takes place.

[0077] For example, since the frequency domain resource allocation granularity of PSSCH is sub-channel, there are N possibilities for the starting sub-channel position of PSSCH in a slot. When the resource allocation period of CSI-RS is T, for the CSI-RS resources in a slot, the k-th CSI-RS transmission corresponding to the PSSCH transmitted in T slots will use the CSI-RS resources in this slot. Therefore, a one-to-one mapping between a total of N*T starting sub-channels and N*T sets of CSI-RS resources in these T slots can be established according to the time domain priority or frequency domain priority. Then, based on the starting sub-channel position used by the corresponding PSSCH and the time unit in which the PSSCH transmission takes place, a corresponding set of CSI-RS resources can be determined as the time-frequency code resource used by the k-th CSI-RS transmitted in slot n+xk (assuming that there is only 1 CSI-RS resource in this set).

[0078] In some examples, the frequency domain subchannel in which the PSSCH transmission is located may include the subchannel occupied by the PSSCH transmission; correspondingly, step 303 may also specifically include: determining the time-frequency code resources used for the reference signal transmission corresponding to the time unit in which the PSSCH transmission is located and the subchannel occupied by the PSSCH transmission.

[0079] For example, similar to the above example, after establishing the mapping relationship, one set of CSI-RS resources can be determined based on the sub-channel occupied by the corresponding PSSCH and the time unit in which the PSSCH is transmitted, as the time-frequency code resource used by the k-th CSI-RS transmitted in slot n+xk (assuming that there is only 1 CSI-RS resource in this set of CSI-RS resources).

[0080] Based on the two examples above, further, if it is determined that the obtained time-frequency code resource contains at least two resources, then one resource can be randomly selected from the at least two resources as the time-frequency code resource used for reference signal transmission; or, based on the modulus of the total number of resources of the at least two resources and the information contained in the SCI associated with the PSSCH, one resource can be determined from the at least two resources as the time-frequency code resource used for reference signal transmission.

[0081] For example, when the number of selected CSI-RS resources exceeds one, the sending UE randomly selects a CSI-RS time-frequency code resource from this group for CSI-RS transmission. The selection of a CSI-RS resource can be determined based on the UE-ID and the modulus of the number of CSI-RS resources in the group, where the UE-ID can be an ID contained in the SCI associated with the PSSCH; or it can be determined based on other information in the SCI associated with the corresponding PSSCH and the number of CSI-RS resources in the group.

[0082] In some examples, the method of this embodiment may further include: when the PSSCH transmission corresponds to transmission within at least two time units, mapping the signal to different time-frequency code resources within the time units according to the aforementioned preset mapping relationship. For example, within a time unit, there may be a CSI-RS reference signal transmitted for the first time or a CSI-RS reference signal transmitted for the yth time (an integer greater than 1). For the time-frequency code set used to transmit the CSI-RS reference signal within that time unit, the CSI-RS reference signals transmitted at different times will be mapped to different video code resources within that time-frequency code set. Specifically, when the PSSCH transmission corresponds to transmission within at least two time units, mapping the signal to different time-frequency code resources within the time units according to the aforementioned preset mapping relationship.

[0083] In some examples, the method of this embodiment may further include: determining whether there is a corresponding reference signal transmission for the PSSCH transmission associated with the SCI based on the indication information contained in the SCI; or, determining the actual transmission of the target number reference signal corresponding to the PSSCH transmission associated with the SCI, and the time and frequency resource information used by the actual transmission of the corresponding reference signal, based on the indication information contained in the SCI; or, determining the number of reference signals corresponding to the PSSCH transmission associated with the SCI based on the indication information contained in the SCI.

[0084] For example, the transmitting UE can include 1 bit information in the SCI indicating whether a corresponding CSI-RS transmission exists for the PSSCH transmission associated with the SCI. Alternatively, the SCI can include X bits information indicating how many actual CSI-RS transmissions correspond to the PSSCH transmission associated with the SCI, and which time-frequency code resource in the X transmissions the corresponding CSI-RS transmission uses. Or, the SCI can include log2(X) bits information indicating the number of CSI-RS transmissions corresponding to the PSSCH transmission associated with the SCI, which can default to transmitting CSI-RS on the CSI-RS resources corresponding to the first k transmissions.

[0085] The method for determining the transmission resources of the reference signal provided in this embodiment provides a resource determination scheme for the transmission of the reference signal that can be used for beam management in side link communication. It can accurately determine the time and frequency code resources used for the transmission of the reference signal and improve the accuracy of beam management in side link communication.

[0086] Figure 4 illustrates a flowchart of a method for determining transmission resources of a reference signal according to an embodiment of this application. This method is applied to the receiving end UE side (as shown in Figure 1, the second UE 12) and may include the following steps.

[0087] Step 401: The second UE obtains the time and frequency resource information used for the PSSCH transmission corresponding to the reference signal.

[0088] The reference signal is used for beam management in side link communication.

[0089] In this embodiment, the reference signal can be transmitted together with the PSSCH, but the resources used for the reference signal transmission do not overlap with those used for the PSSCH transmission. That is, the resources used by the UE to transmit the reference signal in sidelink communication are resources other than those used for its corresponding PSSCH transmission. This allows the reference signal to be transmitted independently of the PSSCH, thus enabling the transmission of multiple reference signals for a single PSSCH. In some examples, the PSSCH transmission corresponds to the transmission of at least one reference signal, which can use the same beam or different beams.

[0090] Step 402: The second UE determines the time unit and time-frequency code resources used for reference signal transmission in the side link based on the time-frequency resource information used for PSSCH transmission.

[0091] To enable the reference signal to be transmitted independently of the PSSCH, the reference signal will be transmitted using resources that do not overlap with the PSSCH resources. In this embodiment, a mapping relationship of the resource information used between the reference signal and its corresponding PSSCH can be pre-configured. Then, based on the time and frequency resource information used for PSSCH transmission, the time unit used for the corresponding reference signal transmission is determined. By querying the mapping relationship, the time and frequency code resources used for the reference signal transmission within the time unit are determined. The determined time and frequency code resources can be used to determine the time domain resources, and / or frequency domain resources, and / or code domain resources used for reference signal transmission in the side link.

[0092] It should be noted that the specific resource determination scheme for the above reference signal can be found in the corresponding description in Figure 2, and will not be repeated here.

[0093] The method for determining the transmission resources of the reference signal provided in this embodiment provides a resource determination scheme for the transmission of the reference signal that can be used for beam management in side link communication. It can accurately determine the time and frequency code resources used for the transmission of the reference signal and improve the accuracy of beam management in side link communication.

[0094] Figure 5 illustrates a flowchart of a method for determining transmission resources of a reference signal according to an embodiment of this application. Based on the embodiment shown in Figure 4, as shown in Figure 5, this method is applied to the receiving end UE side (as shown in the second UE 12 in Figure 1) and may include the following steps.

[0095] Step 501: The second UE obtains the time and frequency resource information used for the PSSCH transmission corresponding to the reference signal.

[0096] The reference signal is used for beam management of the sidelink communication. In some examples, the reference signal used for sidelink beam management may include one of CSI-RS, Direct S-SSB, and SRS, or other RS ​​signal formats.

[0097] In some examples, the PSSCH transmission may correspond to the transmission of at least one reference signal, which may use the same beam or different beams.

[0098] In some examples, when the PSSCH transmission corresponds to the transmission of at least two reference signals, the transmission of different reference signals uses different time-domain resources.

[0099] Step 502: The second UE determines the time unit used for reference signal transmission based on the time unit used for PSSCH transmission.

[0100] In some examples, step 502 may specifically include: starting from the first time unit after the time unit in which the PSSCH transmission occurs, determining the time units to be used for the transmission of multiple reference signals respectively, wherein the first time unit is the first time unit in which there are reference signal resources that meets the processing timing requirements. The timing requirements are that the time difference between the transmission of the reference signal and the transmission of the PSSCH is greater than a time threshold, which may be predefined, preconfigured, or configured by downlink signaling.

[0101] Step 503: In the time unit used for reference signal transmission, the second UE determines the time-frequency code resources used for reference signal transmission by querying a preset mapping relationship based on the time unit and frequency domain sub-channel where the PSSCH transmission is located.

[0102] The preset mapping relationship includes the mapping relationship between the time and frequency resource information used for PSSCH transmission and the time and frequency code resources used for reference signal transmission.

[0103] In some examples, the frequency domain subchannel in which the PSSCH transmission takes place may include the starting subchannel used by the PSSCH transmission; correspondingly, step 503 may specifically include: determining the time-frequency code resources used by the reference signal transmission corresponding to the time unit and starting subchannel in which the PSSCH transmission takes place.

[0104] In some examples, the frequency domain subchannel in which the PSSCH transmission is located may include the subchannel occupied by the PSSCH transmission; correspondingly, step 503 may also specifically include: determining the time-frequency code resources used for the reference signal transmission corresponding to the time unit in which the PSSCH transmission is located and the subchannel occupied by the PSSCH transmission.

[0105] Based on the two examples above, further, if it is determined that the obtained time-frequency code resource contains at least two resources, then one resource can be randomly selected from the at least two resources as the time-frequency code resource used for reference signal transmission; or, based on the modulus of the total number of resources of the at least two resources and the information contained in the SCI associated with the PSSCH, one resource can be determined from the at least two resources as the time-frequency code resource used for reference signal transmission.

[0106] In some examples, the method of this embodiment may further include: when the PSSCH transmission corresponds to the transmission within at least two time units, mapping it to different time-frequency code resources within the time units according to the above-mentioned preset mapping relationship.

[0107] In some examples, the method of this embodiment may further include: determining whether there is a corresponding reference signal transmission for the PSSCH transmission associated with the SCI based on the indication information contained in the SCI; or, determining the actual transmission of the target number reference signal corresponding to the PSSCH transmission associated with the SCI, and the time and frequency resource information used by the actual transmission of the corresponding reference signal, based on the indication information contained in the SCI; or, determining the number of reference signals corresponding to the PSSCH transmission associated with the SCI based on the indication information contained in the SCI.

[0108] It should be noted that the specific resource determination scheme for the above reference signal can be found in the corresponding description in Figure 3, and will not be repeated here.

[0109] The method for determining the transmission resources of the reference signal provided in this embodiment provides a resource determination scheme for the transmission of the reference signal that can be used for beam management in side link communication. It can accurately determine the time and frequency code resources used for the transmission of the reference signal and improve the accuracy of beam management in side link communication.

[0110] In the embodiments provided above, the methods provided by the embodiments of this application have been described from the perspectives of the sending UE and the receiving UE, respectively. To implement the functions of the methods provided in the embodiments of this application, the UE may include hardware structures and software modules, and implement the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. One of the above functions can be executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules.

[0111] Corresponding to the methods for determining the transmission resources of reference signals provided in the above embodiments, this application also provides an apparatus for determining the transmission resources of reference signals. Since the apparatus for determining the transmission resources of reference signals provided in this application corresponds to the methods for determining the transmission resources of reference signals provided in the above embodiments, the implementation of the methods for determining the transmission resources of reference signals is also applicable to the apparatus for determining the transmission resources of reference signals provided in this embodiment, and will not be described in detail in this embodiment.

[0112] Figure 6 is a schematic diagram of the structure of a UE device provided in an embodiment of this application. The UE may be a first UE or a second UE.

[0113] As shown in Figure 6, the device may include: a transceiver module 61, configured to acquire time and frequency resource information used for PSSCH transmission corresponding to a reference signal, wherein the reference signal is used for beam management of side link communication; and a processing module 62, configured to determine, based on the time and frequency resource information, the time unit used for the transmission of the reference signal in the side link and the time and frequency code resources within the time unit.

[0114] In some embodiments, the PSSCH transmission corresponds to the transmission of at least one reference signal, the transmission of which uses the same beam or different beams.

[0115] In some embodiments, when the PSSCH transmission corresponds to the transmission of at least two reference signals, the transmission of different reference signals uses different time-domain resources.

[0116] In some embodiments, the processing module 62 is specifically configured to determine the time unit used for the reference signal transmission based on the time unit used for the PSSCH transmission; and within the time unit used for the reference signal transmission, determine the time-frequency code resources used for the reference signal transmission by querying a preset mapping relationship based on the time unit and frequency domain sub-channel of the PSSCH transmission, wherein the preset mapping relationship includes a mapping relationship between the time-frequency resource information used for the PSSCH transmission and the time-frequency code resources used for the reference signal transmission.

[0117] In some embodiments, the processing module 62 is further configured to determine the time units to be used for multiple reference signal transmissions, starting from the first time unit after the time unit in which the PSSCH transmission takes place. The first time unit is the first time unit with reference signal resources that meets the processing timing requirements. The timing requirements are that the time difference between the transmission of the reference signal and the PSSCH transmission is greater than a time threshold.

[0118] In some embodiments, the frequency domain subchannel includes the starting subchannel used by the PSSCH transmission; the processing module 62 is further configured to determine the time-frequency code resources used by the reference signal transmission corresponding to the time unit of the PSSCH transmission and the starting subchannel.

[0119] In some embodiments, the frequency domain subchannel includes the subchannel occupied by the PSSCH transmission; the processing module 62 is further configured to determine the time-frequency code resources used by the reference signal transmission corresponding to the time unit of the PSSCH transmission and the occupied subchannel.

[0120] In some embodiments, the processing module 62 is further configured to, if it is determined that the obtained time-frequency code resource contains at least two resources, randomly select one resource from the at least two resources as the time-frequency code resource used for the reference signal transmission; or determine one resource from the at least two resources as the time-frequency code resource used for the reference signal transmission based on the modulus of the total number of resources of the at least two resources and the information contained in the SCI associated with the PSSCH.

[0121] In some examples, the processing module 62 is also configured to map the PSSCH transmission to different time-frequency code resources within the time unit according to the above-mentioned preset mapping relationship when the PSSCH transmission corresponds to transmission within at least two time units.

[0122] In some embodiments, the time unit may include one of slot, frame, subframe, OFDM symbol, second, and microsecond.

[0123] In some embodiments, the processing module 62 is further configured to determine, based on the indication information contained in the SCI, whether there is a corresponding reference signal transmission for the PSSCH transmission associated with the SCI; or based on the indication information, determine the actual transmission of the target number of reference signals corresponding to the PSSCH transmission associated with the SCI, and the time and frequency resource information used by the actual transmission of the corresponding reference signals; or based on the indication information, determine the number of reference signals corresponding to the PSSCH transmission associated with the SCI.

[0124] In some embodiments, the reference signal for side link beam management may include one of CSI-RS, direct-connect S-SSB and SRS, or other RS ​​signal formats, etc.

[0125] By applying the technical solution of this embodiment, a resource determination scheme for reference signal transmission that can be used for beam management is provided in side link communication. This scheme can accurately determine the resources used for reference signal transmission and improve the accuracy of beam management in side link communication.

[0126] Please refer to Figure 7, which is a schematic diagram of the structure of a communication device 1800 provided in this embodiment. The communication device 1800 can be a network device, a user device, a chip, chip system, or processor that supports the network device in implementing the above methods, or a chip, chip system, or processor that supports the user device in implementing the above methods. This device can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0127] The communication device 1800 may include one or more processors 1801. The processor 1801 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal equipment, terminal equipment chip, DU or CU, etc.), execute computer programs, and process data from the computer programs.

[0128] Optionally, the communication device 1800 may further include one or more memories 1802, on which a computer program 1804 may be stored. The processor 1801 executes the computer program 1804 to cause the communication device 1800 to perform the methods described in the above method embodiments. Optionally, the memory 1802 may also store data. The communication device 1800 and the memory 1802 may be provided separately or integrated together.

[0129] Optionally, the communication device 1800 may also include a transceiver 1805 and an antenna 1806. The transceiver 1805 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 1805 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0130] Optionally, the communication device 1800 may further include one or more interface circuits 1807. The interface circuits 1807 are used to receive code instructions and transmit them to the processor 1801. The processor 1801 executes the code instructions to cause the communication device 1800 to perform the methods described in the above method embodiments.

[0131] In one implementation, the processor 1801 may include a transceiver for implementing receive and transmit functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receive and transmit functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0132] In one implementation, processor 1801 may store computer program 1803, which runs on processor 1801 and causes communication device 1800 to perform the methods described in the above method embodiments. Computer program 1803 may be embedded in processor 1801, in which case processor 1801 may be implemented in hardware.

[0133] In one implementation, the communication device 1800 may include circuitry capable of performing the functions of transmitting, receiving, or communicating as described in the aforementioned method embodiments. The processor and transceiver described in this application can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductors (CMOS), n-metal-oxide-semiconductor (NMOS), positive-channel metal oxide semiconductors (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0134] The communication device described in the above embodiments can be a network device or a user equipment, but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device is not limited to FIG. 7. The communication device can be a standalone device or part of a larger device. For example, the communication device can be:

[0135] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0136] (2) A collection of one or more ICs, optionally including storage components for storing data and computer programs;

[0137] (3) ASIC, such as modem;

[0138] (4) Modules that can be embedded in other devices;

[0139] (5) Receivers, terminal equipment, smart terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.

[0140] (6) Others, etc.

[0141] For communication devices that can be chips or chip systems, please refer to the schematic diagram of the chip structure shown in Figure 8. The chip shown in Figure 8 includes a processor 1901 and an interface 1902. The number of processors 1901 can be one or more, and the number of interfaces 1902 can be multiple.

[0142] Optionally, the chip also includes a memory 1903, which is used to store necessary computer programs and data.

[0143] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented through hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this application.

[0144] This application also provides a readable storage medium having instructions stored thereon that, when executed by a computer, implement the functions of any of the above method embodiments.

[0145] This application also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0146] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer programs. When a computer program is loaded and executed on a computer, it generates, in whole or in part, the processes or functions according to the embodiments of this application. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, a computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0147] Those skilled in the art will understand that the various numerical designations such as "first," "second," etc., involved in this application are merely for the convenience of description and are not intended to limit the scope of the embodiments of this application, nor do they indicate the order of sequence.

[0148] At least one in this application can also be described as one or more, and multiple can be two, three, four or more, and this application does not impose any limitation. In the embodiments of this application, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", and there is no order or size among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0149] As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, device, and / or apparatus (e.g., disk, optical disk, memory, programmable logic device (PLD)) used to provide machine instructions and / or data to a programmable processor, including machine-readable media that receive machine instructions as machine-readable signals. The term "machine-readable signal" refers to any signal used to provide machine instructions and / or data to a programmable processor.

[0150] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as a data server), or computing systems that include middleware components (e.g., an application server), or computing systems that include frontend components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with embodiments of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., a communication network). Examples of communication networks include local area networks (LANs), wide area networks (WANs), and the Internet.

[0151] Computer systems can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. Client-server relationships are created by computer programs running on the respective computers and having a client-server relationship with each other.

[0152] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this application can be achieved, and this is not limited herein.

[0153] Furthermore, it should be understood that the various embodiments described in this application can be implemented individually or in combination with other embodiments, where the scheme allows.

[0154] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments claimed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0155] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0156] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for determining the transmission resources of a reference signal, characterized in that, The method includes: acquiring time and frequency resource information used for the transmission of the Physical Direct Shared Channel (PSSCH) corresponding to a reference signal, wherein the reference signal is used for beam management of sidelink communication; determining, based on the time and frequency resource information, the time unit used for the transmission of the reference signal in the sidelink and the time and frequency code resources within the time unit; wherein the PSSCH transmission corresponds to the transmission of at least two reference signals, the transmission of different reference signals uses different time-domain resources, and the transmission of the at least two reference signals uses the same beam or different beams; determining the time and frequency code resources used for the transmission of the reference signal includes: determining a set of resources based on the time and frequency resource information, wherein the set of resources includes at least two resources; using the information contained in the Direct Control Information (SCI) associated with the PSSCH as the divisor, using the resource number of the set of resources as the modulus for modulo operation, and determining one resource from the at least two resources based on the result of the modulo operation as the time and frequency code resource used for the transmission of the reference signal.

2. The method according to claim 1, characterized in that, The step of determining the time unit used for the reference signal transmission and the time-frequency code resources within the time unit in the side link based on the time-frequency resource information includes: determining the time unit used for the reference signal transmission based on the time unit used for the PSSCH transmission; and determining the time-frequency code resources used for the reference signal transmission within the time unit used for the reference signal transmission by querying a preset mapping relationship based on the time unit and frequency domain sub-channel where the PSSCH transmission is located, wherein the preset mapping relationship includes a mapping relationship between the time-frequency resource information used for the PSSCH transmission and the time-frequency code resources used for the reference signal transmission.

3. The method according to claim 2, characterized in that, The step of determining the time unit used for the reference signal transmission based on the time unit used for the PSSCH transmission includes: starting from the first time unit after the time unit where the PSSCH transmission is located, determining the time units used for multiple reference signal transmissions respectively, wherein the first time unit is the first time unit with reference signal resources that meets the processing timing requirements, and the timing requirements are that the time difference between the transmission of the reference signal and the PSSCH transmission is greater than a time threshold.

4. The method according to claim 2, characterized in that, The frequency domain subchannel includes the starting subchannel used by the PSSCH transmission; the step of determining the time-frequency code resources used by the reference signal transmission within the time unit used by the reference signal transmission, based on the time unit and frequency domain subchannel of the PSSCH transmission, by querying a preset mapping relationship, includes: determining the time-frequency code resources used by the reference signal transmission corresponding to the time unit and the starting subchannel of the PSSCH transmission.

5. The method according to claim 2, characterized in that, The frequency domain subchannel includes the subchannel occupied by the PSSCH transmission; the step of determining the time-frequency code resources used by the reference signal transmission within the time unit used by the reference signal transmission, based on the time unit and frequency domain subchannel of the PSSCH transmission, by querying a preset mapping relationship, includes: determining the time-frequency code resources used by the reference signal transmission corresponding to the time unit and the occupied subchannel of the PSSCH transmission.

6. The method according to claim 4 or 5, characterized in that, If it is determined that the obtained time-frequency code resource contains at least two resources, then determining the time-frequency code resource used for the reference signal transmission includes: randomly selecting one resource from the at least two resources as the time-frequency code resource used for the reference signal transmission.

7. The method according to claim 2, characterized in that, The method further includes: when the PSSCH transmission corresponds to transmissions within at least two time units, mapping the transmissions to different time-frequency code resources within the time units according to the preset mapping relationship.

8. The method according to claim 1, characterized in that, The time unit includes one of the following: slot; frame; subframe; orthogonal frequency division multiplexing (OFDM) symbol; second; microsecond.

9. The method according to claim 1, characterized in that, The method further includes one of the following: Based on the indication information contained in the SCI, determine whether there is a corresponding reference signal transmission for the PSSCH transmission associated with the SCI; based on the indication information, determine the actual transmission of the target number of reference signals corresponding to the PSSCH transmission associated with the SCI, and the time and frequency resource information used by the actual transmission of the corresponding reference signals; based on the indication information, determine the number of times the reference signals corresponding to the PSSCH transmission associated with the SCI are transmitted.

10. The method according to claim 1, characterized in that, The reference signal includes one of the following: Channel State Information Reference Signal (CSI-RS); Direct Connection Synchronization Information Block (S-SSB); Probe Reference Signal (SRS).

11. The method according to claim 1, characterized in that, The method is executed by a first user equipment (UE) or by a second UE.

12. A user equipment (UE), characterized in that, include: The transceiver module is configured to acquire time and frequency resource information used for the transmission of the Physically Direct Shared Channel (PSSCH) corresponding to the reference signal, wherein the reference signal is used for beam management of the side link communication; the processing module is configured to determine, based on the time and frequency resource information, the time unit used for the transmission of the reference signal in the side link and the time and frequency code resources within the time unit; the PSSCH transmission corresponds to the transmission of at least two reference signals, the transmission of different reference signals uses different time domain resources, and the transmission of the at least two reference signals uses the same beam or different beams; The processing module determines a set of resources based on the time and frequency resource information, the set of resources including at least two resources; it uses the information contained in the direct control information SCI associated with the PSSCH as the divisor, and performs a modulo operation on the number of resources in the set of resources as the modulus; based on the result of the modulo operation, it determines one resource from the at least two resources as the time and frequency code resource used for the reference signal transmission.

13. A communication device, wherein, include: transceiver; Memory; The processor, connected to both the transceiver and the memory, is configured to control the wireless signal transmission and reception of the transceiver by executing computer-executable instructions on the memory, and to implement the method of any one of claims 1 to 11.

14. A computer storage medium, wherein, The computer storage medium stores computer-executable instructions; when executed by a processor, the computer-executable instructions can implement the method of any one of claims 1 to 11.

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