Method, device, storage medium and electronic device for transmitting rs signal

Abstract

Embodiments of the present application provide a method and device for transmitting RS signals, a storage medium and an electronic device. The method comprises: configuring sidelink reference signal (RS) resources; transmitting, by a transmitting end, indication information of the RS resources, and transmitting RS signals on the RS resources indicated by the indication information. The above technical solution solves the problem of how the transmitting end effectively indicates the transmission of RS signals.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication, in particular to a RS signal sending method and device, a storage medium and an electronic device. BACKGROUND

[0002] With the development of wireless communication technology and the increasing demand of users for communication, in order to meet the demand of low latency, high reliability and high speed, the fifth generation mobile communication technology (5G, 5th Generation) has become the trend of future network development. In the sidelink communication system, when there is a service to be transmitted between user equipment (UE), the service data between UEs does not pass through the network side, that is, it does not pass through the cellular link between the UE and the base station for forwarding, but is directly transmitted by the data source UE to the target UE through the sidelink, as shown in Figure 1 This technology can reduce the burden of cellular network, reduce the battery power consumption of user equipment, and improve the robustness of network infrastructure, which can well meet the requirements of high data rate service and proximity service, and also support direct communication in network coverage scenarios, which can meet the special communication needs of public safety and the like.

[0003] In the 5G communication system, the minimum resource unit in the time domain is a symbol (Symbol), and further composed of 12 consecutive symbols with an extended cycle prefix (ECP, Extend Cycle Prefix) or 14 consecutive symbols with a normal cycle prefix (NCP, Normal Cycle Prefix) to form a time slot (which can be represented as Slot) in the time domain, or one or more consecutive symbols (less than or equal to 7 symbols) to form a mini-slot (Mini-Slot). The minimum resource unit in the frequency domain is a subcarrier, and the size of the subcarrier is a limited number of optional values (15kHZ, 30kHZ, 60kHZ, 120kHZ, 240kHZ), and 12 consecutive subcarriers form a frequency domain resource block (RB, Resource Block). RB is the resource unit of frequency domain resource configuration. In the 5G communication system, when sidelink communication is implemented, the same time domain and frequency domain resource units are also used as the basis for sidelink communication, and further a group of time domain and frequency domain resource units form a sidelink resource pool (sidelink Resource Pool). In the resource pool, the UE performs sidelink communication according to the configured or preconfigured resources.

[0004] In addition, when beam management is supported on SL, RS resources for beam management will be configured within the BWP on the SL carrier or on the SL resource pool. Taking CSI-RS as an example, there are three methods for resource configuration of RS resources, including:

[0005] (1) RS resource is configured in the slot where PSSCH is located and shares symbol with PSSCH, similar to CSI-RS signal defined for channel measurement feedback in R16 SL, as shown in Figure 2 .

[0006] (2) RS resource is configured in the slot where PSSCH is located and shares symbol with PSSCH, similar to PSFCH channel resource defined in R16 SL, as shown in Figure 3 .

[0007] (3) RS resource is configured on a certain BWP of SL carrier and outside the SL data resource pool, similar to SSB resource defined in R16 SL, as shown in Figure 4 .

[0008] No matter which resource configuration method, multiple RS resources are configured on SL for different UE to transmit signals, in this case, the transmitting UE (or expressed as the transmitting end) needs to indicate the RS resource position of the transmitting RS signal to the receiving UE (or expressed as the receiving end).

[0009] 3GPP SideLink R18 initiates the beam management operation in support of FR2, so on the SL carrier, it is highly likely to support the RS transmission corresponding to the beam management. After the RS resource is configured or pre-configured on the SL link, there is a problem of how the transmitting UE effectively informs the receiving UE of the RS transmission information. This paper assumes that after the RS resource is configured, some solutions are given on how to indicate the RS resource on SL.

[0010] For the problem of how the transmitting end effectively transmits the RS signal, currently there is no effective solution.

[0011] Therefore, it is necessary to improve the related technology to overcome the defects in the related technology. SUMMARY

[0012] The embodiments of the present application provide a RS signal transmission method and device, storage medium and electronic device, to at least solve the problem of how the transmitting end effectively transmits the RS signal.

[0013] According to an aspect of the embodiments of the present application, a RS signal transmission method is provided, comprising: configuring a sidelink reference signal (RS) resource; transmitting indication information of the RS resource by a transmitting end, and transmitting a RS signal on the RS resource indicated by the indication information.

[0014] Furthermore, in an optional exemplary embodiment, configuring sidelink reference signal (RS) resources includes configuring at least one set of RS resources, wherein the set of RS resources includes at least one RS resource.

[0015] Furthermore, in an optional exemplary embodiment, configuring the sidelink reference signal (RS) resource includes: configuring the RS resource on time-frequency resources within the sidelink data resource pool; or, configuring the RS resource on time-frequency resources outside the sidelink data resource pool.

[0016] Furthermore, in an optional exemplary embodiment, the indication information of the RS resource transmitted by the transmitter includes: RS resource indication information transmitted within the Side Link Control Information (SCI); or RS resource indication information transmitted within the MAC control unit.

[0017] Further, in an optional exemplary embodiment, the indication information includes: first identification information; or, second identification information; or, the first identification information and third identification information; or, the second identification information and the third identification information; wherein, the first identification information is used to indicate whether an RS signal has been transmitted on a determined RS resource on the Physical Side Link Shared Channel (PSSCH) of the time slot where the indication information is located; the second identification information is used to indicate whether an RS signal has been transmitted on an RS resource within the RS resource set corresponding to the Physical Side Link Control Channel (PSCCH) or PSSCH of the time slot where the indication information is located; the third identification information is used to indicate whether the spatial filters of the signals transmitted by multiple RS resources on the PSCCH or the RS resource set corresponding to the PSSCH of the time slot where the indication information is located are the same.

[0018] Furthermore, in an optional exemplary embodiment, the indication information includes: RS set index information within the time slot where the indication information is located; or, RS resource index information within a specific RS resource set within the time slot where the indication information is located.

[0019] Furthermore, in an optional exemplary embodiment, the indication information includes: set index information corresponding to the RS resource set, wherein the set index information corresponding to the RS resource set includes set index information of the RS resource set within the System Frame Number (SFN) period; or, displacement information of the RS resource set at the starting logical time slot position within the side link data resource pool, and RS resource set index information relative to the starting logical time slot; or, displacement information of the RS resource set at the starting physical time slot position within the SFN period, and RS resource set index information relative to the starting physical time slot.

[0020] Furthermore, in an optional exemplary embodiment, the indication information includes a trigger result, representing an RS measurement result fed back by the receiving end on an indicated, configured, or pre-configured resource. After the indication information indicates that it pertains to transmitting an RS signal and corresponds to an RS resource, the indication information is further used to trigger the receiving end to detect the RS signal based on the received RS resource indication information and to feed back the RS measurement result.

[0021] Furthermore, in an optional exemplary embodiment, the RS measurement results include beam quality information of the PSSCH of the RS resource, RS resource index information in the RS resource set corresponding to PSCCH / PSSCH, received power RSRP of the RS signal, interference signal-to-noise ratio SINR of the RS signal, and distance information from the transmitter to the receiver.

[0022] Furthermore, in an optional exemplary embodiment, the method further includes: the indication information includes second identification information located within the side link control information (SCI), and the transmitter uses the second identification information to indicate whether the RS signal has been transmitted on the RS resource set corresponding to the PSCCH / PSSCH in the time slot where the indication information is located. The relationship between the PSCCH / PSSCH in the time slot where the indication information is located and the corresponding RS resource set is a uniquely determined corresponding resource mapping relationship between the resources of the PSCCH / PSSCH in the time slot where the indication information is located and the configured or pre-configured RS resource set. Furthermore, the resources of different PSCCH / PSSCHs correspond to different beam RS resource sets.

[0023] According to another aspect of the embodiments of this application, an RS signal transmitting apparatus is also provided, comprising: a configuration module for configuring sidelink reference signal RS resources; and a transmitting module for transmitting indication information of the RS resources through a transmitter, and transmitting RS signals on the RS resources indicated by the indication information.

[0024] According to another aspect of the embodiments of this application, a computer-readable storage medium is also provided, wherein a computer program is stored in the computer program, and the computer program is configured to execute the above-described method for transmitting RS signals when it is run.

[0025] According to another aspect of the embodiments of this application, an electronic device is also provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the method for transmitting the RS signal through the computer program.

[0026] This application solves the problem of how the transmitter can effectively send RS signals by configuring side link reference signal (RS) resources, sending indication information of the RS resources through the transmitter, and transmitting RS signals on the RS resources indicated by the indication information. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and, together with the description thereof, serve to explain this application and do not constitute an undue limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram illustrating how data source UE transmits data to target UE via a sidelink in related technologies.

[0029] Figure 2 This is a schematic diagram of RS resource configuration in related technologies (I);

[0030] Figure 3 This is a schematic diagram (II) of RS resource configuration in related technologies;

[0031] Figure 4 This is a schematic diagram of RS resource configuration in related technologies (III);

[0032] Figure 5 This is a hardware structure block diagram of a computer terminal for an RS signal transmission method according to an embodiment of this application;

[0033] Figure 6 This is a flowchart of a method for transmitting RS signals according to an embodiment of this application;

[0034] Figure 7 This is a schematic diagram (a) of configuring an RS set on a BWP on an SL carrier according to an embodiment of this application;

[0035] Figure 8 This is a schematic diagram of a transmitting UE transmitting RS signals on PSSCH resources according to an embodiment of this application;

[0036] Figure 9 This is a schematic diagram (II) of configuring an RS set on a BWP within an SL carrier according to an embodiment of this application;

[0037] Figure 10 This is a schematic diagram (a) showing the correspondence between PSCCH / PSSCH and RS resource groups according to an embodiment of this application;

[0038] Figure 11 This is a schematic diagram (II) showing the correspondence between PSCCH / PSSCH and RS resource groups according to an embodiment of this application;

[0039] Figure 12 This is a schematic diagram (III) showing the correspondence between PSCCH / PSSCH and RS resource groups according to an embodiment of this application;

[0040] Figure 13 This is a schematic diagram (IV) showing the correspondence between PSCCH / PSSCH and RS resource groups according to an embodiment of this application;

[0041] Figure 14 This is a structural block diagram of an RS signal transmitting device according to an embodiment of this application. Detailed Implementation

[0042] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0043] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0044] The technical terms used in this application will be explained below:

[0045] SL, SideLink;

[0046] PSSCH, Physical Sidelink Shared Channel;

[0047] subchannel;

[0048] RS, Reference signal;

[0049] RB, Resource block;

[0050] SFN, System frame number;

[0051] DFN, Direct Frame Number;

[0052] PSCCH, Physical sidelink control channel;

[0053] PSSCH, Physical Sidelink Shared Channel.

[0054] The methods and embodiments provided in this application can be executed on a computer terminal or similar computing device. Taking running on a computer terminal as an example, Figure 5 This is a hardware structure block diagram of a computer terminal for an RS signal transmission method according to an embodiment of this application. For example... Figure 5 As shown, a computer terminal may include one or more ( Figure 5 Only one is shown in the diagram. A processor 202 (which may include, but is not limited to, a microprocessor unit (MPU) or a programmable logic device (PLD)) and a memory 204 for storing data are also shown. In one exemplary embodiment, the computer terminal may further include a transmission device 206 for communication functions and an input / output device 208. Those skilled in the art will understand that... Figure 5 The structure shown is for illustrative purposes only and does not limit the structure of the computer terminal described above. For example, the computer terminal may also include components that are more complex than those described above. Figure 5 The more or fewer components shown, or having the same Figure 5 Equivalent functions or ratios shown Figure 5 The functions shown have more different configurations.

[0055] The memory 204 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the RS signal transmission method in this embodiment. The processor 202 executes various functional applications and data processing by running the computer program stored in the memory 204, thus implementing the aforementioned method. The memory 204 may include high-speed random access memory and non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 204 may further include memory remotely located relative to the processor 202, and these remote memories can be connected to a computer terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0056] The transmission device 206 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider for the computer terminal. In one example, the transmission device 206 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 206 may be a Radio Frequency (RF) module used for wireless communication with the Internet.

[0057] Figure 6 This is a flowchart of a method for transmitting RS signals according to an embodiment of this application, as shown below. Figure 6 As shown, the steps of this method include:

[0058] Step S602: Configure the side link reference signal RS resource.

[0059] Step S604: Send indication information of the RS resource through the transmitter, and transmit an RS signal on the RS resource indicated by the indication information.

[0060] By using the above method, by configuring the side link reference signal (RS) resource, sending the indication information of the RS resource through the transmitter, and transmitting the RS signal on the RS resource indicated by the indication information, the problem of how the transmitter can effectively send the RS signal is solved.

[0061] In an optional exemplary embodiment, in order to better understand how the side link reference signal RS resources are configured in step S602 above, at least one RS resource set can be configured, wherein the RS resource set includes at least one RS resource.

[0062] RS resources can also include RS resource groups. Configuring sidelink reference signal (RS) resources can include configuring at least one RS resource group. Resource groups and RS resource sets have the same meaning, only their implementation scenarios differ.

[0063] In an optional exemplary embodiment, to better understand how the side link reference signal RS resource is configured in step S602 above, the RS resource can be configured on time-frequency resources within the side link data resource pool; or, the RS resource can be configured on time-frequency resources outside the side link data resource pool.

[0064] In an optional exemplary embodiment, the configured sidelink RS resource includes at least one of the following: a port of the RS resource on the sidelink, a frequency domain pattern of the RS resource, a density of the RS resource, a power of the RS resource, a symbol position of the RS resource, and a code division multiplexing type of the RS resource.

[0065] In an optional exemplary embodiment, the RS resource indication information sent by the transmitter in step S604 above specifically includes: RS resource indication information sent within the side link control information (SCI); or, RS resource indication information sent within the MAC control unit.

[0066] In an optional exemplary embodiment, the indication information includes: first identification information; or, second identification information; or, the first identification information and third identification information; or, the second identification information and the third identification information; wherein, the first identification information is used to indicate whether an RS signal has been transmitted on a determined RS resource on the Physical Side Link Shared Channel (PSSCH) of the time slot where the indication information is located; the second identification information is used to indicate whether an RS signal has been transmitted on an RS resource within the RS resource set corresponding to the Physical Side Link Control Channel (PSCCH) or PSSCH of the time slot where the indication information is located; the third identification information is used to indicate whether the spatial filters of the signals transmitted by multiple RS resources on the PSCCH or the RS resource set corresponding to the PSSCH of the time slot where the indication information is located are the same.

[0067] In an optional exemplary embodiment, the indication information includes: RS set index information within the time slot where the indication information is located; or, RS resource index information within a specific RS resource set within the time slot where the indication information is located.

[0068] In an optional exemplary embodiment, the indication information includes: set index information corresponding to the RS resource set, wherein the set index information corresponding to the RS resource set includes set index information of the RS resource set within the System Frame Number (SFN) period; or, displacement information of the RS resource set at the starting logical timeslot position within the side link data resource pool, and RS resource set index information relative to the starting logical timeslot; or, displacement information of the RS resource set at the starting physical timeslot position within the SFN period, and RS resource set index information relative to the starting physical timeslot.

[0069] In this context, a logical slot is simply a slot number within the data resource pool. A physical slot is simply a physical number, because the data resource pool is formed by mapping a portion of time-domain slots onto available physical resources using a bitmap, creating a logically continuous resource pool in the time domain.

[0070] In an optional exemplary embodiment, the indication information includes a trigger result, representing an RS measurement result fed back by the receiver on an indicated, configured, or pre-configured resource. After the indication information indicates that it belongs to the RS signal transmission and corresponds to the RS resource, the indication information is further used to trigger the receiver to detect the RS signal according to the received RS resource indication information and feed back the RS measurement result.

[0071] Specifically, after the indication information indicates that it belongs to the transmission of RS signal and the RS resource corresponding to the indication information, the indication information is also used to trigger the receiving end to detect the RS signal on the configured sidelink RS resource according to the configured sidelink RS resource and the indication information of the received RS resource, and to feed back the RS measurement result on the PSSCH resource provided by the transmitting end. The PSSCH resource provided by the transmitting end includes the resource indicated by the transmitting end, or a configured resource, or a pre-configured resource.

[0072] The transmitting end provides feedback resources for feeding back the RS measurement results. The receiving end autonomously selects the feedback resources for feeding back the RS measurement results. The feedback resources may include PSSCH resources, SCI resources, or PSFCH (Physical sidelink feedback channel) resources.

[0073] In an optional exemplary embodiment, the RS measurement results include beam quality information of the PSSCH of the RS resource, RS resource index information in the RS resource set corresponding to PSCCH / PSSCH, received power RSRP of the RS signal, interference signal-to-noise ratio SINR of the RS signal, and distance information from the transmitter to the receiver.

[0074] Specifically, for beam RSRP (or SINR), if it is determined that the beam RSRP is higher than a preset threshold, then ACK information is sent; if it is determined that the beam RSRP is lower than the preset threshold, then NACK information is sent.

[0075] In an optional exemplary embodiment, a technical solution is also proposed, the specific steps of which include: the indication information includes second identification information located within the side link control information (SCI), and the transmitter uses the second identification information to indicate whether the RS signal has been transmitted on the RS resource set corresponding to the PSCCH / PSSCH in the time slot where the indication information is located, wherein the relationship between the PSCCH / PSSCH in the time slot where the indication information is located and the corresponding RS resource set is a uniquely determined corresponding resource mapping relationship between the resources of the PSCCH / PSSCH in the time slot where the indication information is located and the configured or pre-configured RS resource set, and the resources of different PSCCH / PSSCH have a corresponding relationship with different beam RS resource sets.

[0076] The second identification information is also used to indicate whether different RS resources on the RS resource set send the same beam type.

[0077] The method for transmitting RS signals will be further explained below with reference to the following embodiments.

[0078] In this application, configurations generally originate from the network or base station and are sent to the UE via signaling. Pre-configurations are generally configurations provided by other higher-level entities, such as the UE's own higher-level entities, other network entities, etc. The distinction between configuration and pre-configuration will not be strictly enforced thereafter; the following description of configuration also includes pre-configuration cases, and the term "higher-level entity" will be used to refer to the base station, network, or other higher-level entities.

[0079] When the SL is operating on FR2, beam management-related operations require the transmission of beam-related RSs, such as CSI-RS, on the SL. There are typically two methods for RS transmission on the SL: either the RS is transmitted simultaneously with the PSSCH within the PSSCH, or the RS is transmitted independently on the SL link. Regardless of the method, after configuring the RS resources on the SL, the transmitting UE needs to indicate the transmitted SL RS. This indication information is contained in at least one of the SCI or MAC CE, facilitating further measurement and feedback by the receiving UE.

[0080] like Figure 2 As shown, in the case of shared slots and symbols, Method 1 can be used to explain the shared indication information under transmission between RS and PSSCH. Method 1 is as follows:

[0081] When one RS set is configured, the transmitting UE uses 1 bit of indication information to indicate whether an RS signal is being transmitted in the current PSSCH. When the RS set contains multiple RS resources, the receiving UE detects all RS resources in the receiving slot, and the indication information can be carried in the SCI.

[0082] In one embodiment, such as Figure 7 As shown, an RSset is configured or pre-configured on the BWP on the SL carrier.

[0083] Furthermore, such as Figure 8 As shown, in the SL communication resource pool, the transmitting UE transmits a certain RS signal from RSset on the selected PSSCH resource and indicates it. The transmitting UE transmits a reference signal on RS1 resource within the PSSCH resource area selected in slot n, and on RS2 resource within the PSSCH resource area selected in slot n+2. Then, the transmitting UE indicates 1 in the corresponding indication field of the corresponding SCI, indicating that an RS signal is transmitted on the RS resource in the current data area indicated by the SCI. No RS signal is transmitted on the RS resource within the PSSCH resource area in slot n+1, and the corresponding SCI indication field indicates 0.

[0084] Alternatively, Method 2 can be used to explain how RS and PSSCH share the indication information during transmission. Method 2 is detailed below:

[0085] When one RS set is configured, and the RS set contains N RS resources, the transmitting UE indicates the RS index transmitted in the current PSSCH. The correspondence between the indication information and the transmitted RS is configured. The receiving UE performs detection at a determined location according to the indication information (SCI or MAC CE).

[0086] In one embodiment, such as Figure 7 The transmitting UE further indicates the RS index in the SCI. A total of 4 RS resources are configured in the RS set, and the correspondence of one configuration is shown in Table 1 below:

[0087] Table 1

[0088] Bit information bit indication meaning 000 no signal transmission 001 RS1 010 RS2 011 RS3 100 RS4 101 RS1+RS2 110 RS1+RS2+RS3 111 RS1+RS2+RS3+RS4

[0089] According to the table above, if the transmitting UE indicates 001 in the SCI of slot n, it means that RS1 is being transmitted in that slot; if it indicates 010 in the SCI of slot n+2, it means that RS2 is being transmitted in that slot; and if it indicates 000 in the SCI of slot n+1, it means that there is no RS transmission in that slot.

[0090] The SCI contains 1 bit of indication information, where 1 indicates the presence of an RS signal transmission and 0 indicates its absence. When the SCI is 1, the subsequent MAC CE indicates the RS index transmitted in the PSSCH, indicating at least one RS index.

[0091] Alternatively, method 3 can be used to explain how RS and PSSCH share indication information during transmission. Method 3 is detailed below:

[0092] The transmitting UE instructs the set index according to the configured number of RS sets. When the RS set contains multiple RS resources, the receiving UE detects all RS resources in the receiving slot.

[0093] In one embodiment, such as Figure 9 As shown, two RS sets are configured on the BWP within the SL carrier.

[0094] The number of RS sets, N=2, is used to set 2 bits of information for indication, with one code point used to indicate that no RS is transmitted.

[0095] When a UE transmits RS in RS set1 within a PSSCH in a certain slot, it indicates 01 in the corresponding PSCCH. When a UE transmits RS in RS set2 within a PSSCH in a certain slot, it indicates 10 in the corresponding PSCCH. When a UE does not transmit any RS in RS set within a PSSCH in a certain slot, it indicates 00 in the corresponding PSCCH.

[0096] Alternatively, method 4 can be used to explain the shared indication information between RS and PSSCH during transmission. Method 4 is as follows: The transmitting UE indicates the set index according to the configured number of RS sets. When the RS set contains multiple RS resources, it further indicates the RS index, indicating the RS signal position in the slot. This indication information is at least one of SCI or MAC CE.

[0097] In one embodiment, such as Figure 9 As shown, both Set index information and RS index information are contained in SCI, and one field in SCI is 2-bit information. 00 indicates that no RS in RS set is transmitted in the current slot PSSCH, 01 indicates that any RS in RS set1 is transmitted in the current slot PSSCH, 10 indicates that any RS in RS set2 is transmitted in the current slot PSSCH, and 11 is the reserved field.

[0098] Furthermore, there is a 3-bit field used to indicate the RS index in the RS set, where 000 represents RS1; 001 represents RS2; 010 represents RS3; 011 represents RS4; 100 represents RS1+RS2; 010 represents RS1+RS2+RS3; and 011 represents RS1+RS2+RS3+RS4.

[0099] When the SCI contains 1 bit of indication information, 1 indicates that an RS signal is being transmitted on the PSSCH in the slot where the SCI is located, and 0 indicates that no RS signal is being transmitted on the PSSCH in the slot where the SCI is located. When the indication in the SCI is 1, the MACCE further indicates the set index and the RS index within the set.

[0100] like Figure 3 or Figure 4 As shown, in the case of independent RS transmission, the indication information can be explained using method 5-7, wherein, Figure 3 This corresponds to RS being within the SL data resource pool, and the symbol for RS being different from the symbol for PSSCH. Figure 4This corresponds to RS resources being outside the SL data resource pool.

[0101] The specific implementation steps of Method 5 include: the UE transmitting 1 bit of information in the SCI to indicate whether an RS signal is transmitted at the RS resource group location corresponding to the current PSCCH / PSSCH. The resource correspondence can be configured, pre-configured, or a predefined rule; optionally, the UE further indicates with 1 bit whether beam training (different RSs correspond to different beams) or beam training (different RSs correspond to the same beam) is transmitted at the RS resource group location corresponding to the PSCCH / PSSCH.

[0102] In one embodiment, the candidate PSCCH / PSSCH resources in the SL data resource pool have a unique and definite corresponding resource mapping relationship with the configured or pre-configured RS resource groups. That is, one PSCCH / PSSCH resource can map to at least one RS resource group, and different PSCCH / PSSCH resources can map to different resource groups.

[0103] like Figure 10 As shown, taking PSSCH1 as an example, PSCCH / PSSCH1 on slot1 subchannel 1 corresponds to the RS1 resource group (i.e., Figure 10 In RS1 resource group, there are multiple RS resources that can be used to transmit multiple beams. When the PSCCH indicates 1, it means that there is beam transmission on the corresponding RS1 resource group; when the PSCCH indicates 0, it means that there is no beam transmission on the corresponding RS1 resource group. Correspondingly, slot2 subchannel 1 corresponds to RS5 resource group (i.e., Figure 10 In RS group 5), slot 3 subchannel 1 corresponds to RS9 resource group (i.e. Figure 10 In RS group 9), slot4 subchannel 1 corresponds to resource group RS13 (i.e. Figure 10 RS group 13).

[0104] Similarly, the resource groups corresponding to different subchannels on the same slot can be obtained by referring to the above process, which will not be elaborated here.

[0105] Additionally, optionally, there is a field in the PSCCH where indication 1 indicates that different RS resources on the RS1 resource group transmit the same beam, and indication 0 indicates that different RS resources on the RS1 resource group transmit different beams.

[0106] The candidate PSCCH / PSSCH resources in the SL data resource pool have multiple corresponding resource mapping relationships with the configured or pre-configured RS resource groups, referred to as mapping relationship 1, mapping relationship 2, ..., mapping relationship L. Based on the PC5 RRC configuration, a specific mapping relationship is indicated by the SCI, with the indication bit length being log2(L) rounded up. After the mapping relationship is determined, one PSCCH / PSSCH resource can map to at least one RS resource group, and different PSCCH / PSSCHs can be mapped to different RS resource groups. Furthermore, under this mapping relationship, the transmitting UE uses 1 bit in the SCI to indicate whether an RS signal has been transmitted on the corresponding RS resource group of the PSCCH / PSSCH.

[0107] The specific implementation steps of Method 6 include: transmitting the starting slot index of the RS resource group indicated by the UE (the slot index can be the logical slot number in the resource pool or the physical slot number in the SFN period), and the RS group index number at the beginning of the RS resource slot. Optionally, the UE further indicates with 1 bit whether the corresponding resource group position is for transmit beam training (different RS transmit different beams) or receive beam training (different RS transmit the same beam).

[0108] The transmitting UE uses 1 bit in the SCI to indicate whether RS ​​transmission exists. If it does, it further indicates the logical slot starting position of the RS resource from the current slot in the MAC CE, as well as the relative index of the RS resource group starting from the slot of the RS resource. Figure 11 As shown, the PSSCH corresponding to PSSCH1 indicates that 1 bit exists for RS transmission, and the MAC CE further indicates that the logical slot offset of RS is 1. Furthermore, it indicates that the RS group resource index starting from slot2 is 2, which means that the second RS resource group on slot2, that is, the RS6 resource group is the resource group of the transmitting RS indicated by PSCCH.

[0109] Figure 12 All RS resources are configured within the available slots of the SL data resource pool. The transmitting UE indicates the presence of RS transmission in its SCI using 1 bit. If present, the MAC CE further indicates the physical slot starting position of the RS resource (offset = 3) from the current slot, and the relative index of the RS resource group starting from the initial slot of the RS resource (2). Figure 12 The RS resource group for transmitting RS signals corresponding to PSSCH1 was finally determined to be RS6.

[0110] Figure 13All RS resources are configured in slots outside the SL data resource pool. The transmitting UE uses 1 bit in the SCI to indicate whether RS ​​transmission exists. If it exists, the MAC CE further indicates the physical slot starting position offset = 4 for the RS resource from the current slot, and the relative index of the RS resource group starting from the initial slot of the RS resource is 2. Figure 13 The RS resource group for transmitting RS signals corresponding to PSSCH1 was finally determined to be RS6.

[0111] The specific implementation steps of method 7 include: transmitting the resource index of the RS resource group in the SFN cycle to the UE. Optionally, the UE further indicates with 1 bit whether the corresponding resource group position is for transmit beam training (different RS transmit different beams) or receive beam training (different RS transmit the same beam).

[0112] like Figure 11- Figure 13 As shown, the PSCCH corresponding to PSSCH1 indicates the presence of RS transmission by 1 bit, and the RS group resource index in the SFN cycle is 6 in the MAC CE. Furthermore, 1 bit in the MAC indicates whether the resources in the RS resource group are the same beam or different beams.

[0113] In this embodiment, based on methods 1 to 7 above, after indicating the RS resource for transmitting RS through at least one of SCI or MAC CE, the indication information is described as follows: The indication information also includes triggering the receiving UE to provide feedback. This resource indication information is also feedback trigger information. After receiving the indication information, the receiving UE provides feedback on the RS measurement results on the configured, pre-configured, or feedback resource indicated by the transmitting UE.

[0114] In one embodiment, configuring RS resources also requires determining the RS resource port, resource frequency domain pattern, density, power, and symbol location parameters. Multiple RS resource parameters can be configured or pre-configured within the SL BWP. The transmitting UE on the sidelink unicast link can indicate which set of RS resource parameters to use on the sidelink through SCI or MAC CE.

[0115] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of this application.

[0116] This embodiment also provides an RS signal transmitting device, which is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0117] Figure 14 This is a structural block diagram of an RS signal transmitting apparatus according to an embodiment of this application. Figure 14 As shown, the RS signal transmitting device includes:

[0118] Configuration module 1402 is used to configure the side link reference signal RS resources.

[0119] The transmitting module 1404 is used to transmit indication information of the RS resource through the transmitting end, and transmit RS signals on the RS resource indicated by the indication information.

[0120] The above-described device, by configuring the side link reference signal (RS) resource, sending indication information of the RS resource through the transmitter, and transmitting the RS signal on the RS resource indicated by the indication information, solves the problem of how the transmitter can effectively send the RS signal.

[0121] In an exemplary embodiment, the configuration module 1402 is further configured to configure at least one RS resource set, wherein the RS resource set includes at least one RS resource.

[0122] RS resources can also include RS resource groups. Configuring sidelink reference signal (RS) resources can include configuring at least one RS resource group. Resource groups and RS resource sets have the same meaning, only their implementation scenarios differ.

[0123] In an exemplary embodiment, the configuration module 1402 is further configured to configure the RS resource on time-frequency resources within the side link data resource pool; or to configure the RS resource on time-frequency resources outside the side link data resource pool.

[0124] In an exemplary embodiment, the configured sidelink RS resource includes at least one of the following: a port of the RS resource on the sidelink, a frequency domain pattern of the RS resource, a density of the RS resource, a power of the RS resource, a symbol position of the RS resource, and a code division multiplexing type of the RS resource.

[0125] In an exemplary embodiment, the indication information of the RS resource transmitted by the aforementioned transmitter specifically includes: indication information of the RS resource transmitted within the Side Link Control Information (SCI); or, indication information of the RS resource transmitted within the MAC control unit.

[0126] In an exemplary embodiment, the indication information includes: first identification information; or, second identification information; or, the first identification information and third identification information; or, the second identification information and the third identification information; wherein, the first identification information is used to indicate whether an RS signal has been transmitted on a determined RS resource on the Physical Side Link Shared Channel (PSSCH) of the time slot where the indication information is located; the second identification information is used to indicate whether an RS signal has been transmitted on an RS resource within the RS resource set corresponding to the Physical Side Link Control Channel (PSCCH) or PSSCH of the time slot where the indication information is located; the third identification information is used to indicate whether the spatial filters of the signals transmitted by multiple RS resources on the RS resource set corresponding to the PSCCH or PSSCH of the time slot where the indication information is located are the same;

[0127] In one exemplary embodiment, the indication information includes: RS set index information within the time slot where the indication information is located; or, RS resource index information within a specific RS resource set within the time slot where the indication information is located.

[0128] In an exemplary embodiment, the indication information includes: set index information corresponding to the RS resource set, wherein the set index information corresponding to the RS resource set includes set index information of the RS resource set within the System Frame Number (SFN) period; or, displacement information of the RS resource set at the starting logical timeslot position within the sidelink data resource pool, and RS resource set index information relative to the starting logical timeslot; or, displacement information of the RS resource set at the starting physical timeslot position within the SFN period, and RS resource set index information relative to the starting physical timeslot.

[0129] In this context, a logical slot is simply a slot number within the data resource pool. A physical slot is simply a physical number, because the data resource pool is formed by mapping a portion of time-domain slots onto available physical resources using a bitmap, creating a logically continuous resource pool in the time domain.

[0130] In an exemplary embodiment, the indication information includes a trigger result, representing an RS measurement result fed back by the receiver on an indicated, configured, or pre-configured resource. After the indication information indicates that it belongs to the transmission of RS signal and is an RS resource corresponding to the indication information, the indication information is further used to trigger the receiver to detect the RS signal according to the received indication information of the RS resource and feed back the RS measurement result.

[0131] Specifically, after the indication information indicates that it belongs to the transmission of RS signal and the RS resource corresponding to the indication information, the indication information is also used to trigger the receiving end to detect the RS signal on the configured sidelink RS resource according to the configured sidelink RS resource and the indication information of the received RS resource, and to feed back the RS measurement result on the PSSCH resource provided by the transmitting end. The PSSCH resource provided by the transmitting end includes the resource indicated by the transmitting end, or a configured resource, or a pre-configured resource.

[0132] In an exemplary embodiment, the RS measurement results include beam quality information of the PSSCH of the RS resource, RS resource index information in the RS resource set corresponding to PSCCH / PSSCH, received power RSRP of the RS signal, interference signal-to-noise ratio SINR of the RS signal, and distance information from the transmitter to the receiver.

[0133] In an exemplary embodiment, the RS signal transmitting device further includes: an indication module, configured to use the second identification information located within the side link control information (SCI) in the indication information to indicate whether the RS signal has been transmitted on the RS resource set corresponding to the PSCCH / PSSCH in the time slot where the indication information is located, through the transmitting end. The relationship between the PSCCH / PSSCH in the time slot where the indication information is located and the corresponding RS resource set is a uniquely determined corresponding resource mapping relationship between the resources of the PSCCH / PSSCH in the time slot where the indication information is located and the configured or pre-configured RS resource set. Furthermore, the resources of different PSCCH / PSSCHs correspond to different beam RS resource sets.

[0134] The second identification information is also used to indicate whether different RS resources on the RS resource set send the same beam type.

[0135] In one exemplary embodiment, the aforementioned computer-readable storage medium may include, but is not limited to, various media capable of storing computer programs, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard disk, magnetic disk, or optical disk.

[0136] Specific examples in this embodiment can be found in the examples described in the above embodiments and exemplary implementations, and will not be repeated here.

[0137] Embodiments of this application also provide an electronic device including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0138] Optionally, in this embodiment, the processor can be configured to perform the following steps via a computer program:

[0139] S1, Configure the side link reference signal RS resource;

[0140] S2, the transmitter sends the indication information of the RS resource and transmits the RS signal on the RS resource corresponding to the indication information.

[0141] In one exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0142] Specific examples in this embodiment can be found in the examples described in the above embodiments and exemplary implementations, and will not be repeated here.

[0143] Obviously, those skilled in the art should understand that the modules or steps of this application described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented here, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, this application is not limited to any particular combination of hardware and software.

[0144] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the scope of protection of this application.

Claims

1. A method for transmitting an RS signal, characterized in that, include: Configure the side link reference signal RS resource; The transmitter sends indication information of the RS resource and transmits an RS signal on the RS resource indicated by the indication information. The indication information includes: first identification information and third identification information; or, second identification information and the third identification information; wherein, the first identification information is used to indicate whether an RS signal has been transmitted on a determined RS resource on the Physical Sidelink Shared Channel (PSSCH) of the time slot where the indication information is located; the second identification information is used to indicate whether an RS signal has been transmitted on an RS resource within the RS resource set corresponding to the Physical Sidelink Control Channel (PSCCH) or PSSCH of the time slot where the indication information is located; the third identification information is used to indicate whether the spatial filters of the signals transmitted by multiple RS resources on the RS resource set corresponding to the PSCCH or PSSCH of the time slot where the indication information is located are the same; The method further includes at least one of the following: The transmitter indicates the starting time slot index of the RS resource set and the RS group index number at which the RS resource time slot begins; The transmitter can instruct different RS resources at the corresponding resource group location to send different beams, or instruct different RS resources at the corresponding resource group location to send the same beam.

2. The method for transmitting RS signals according to claim 1, characterized in that, Configure sidelink reference signal (RS) resources, including: Configure at least one RS resource set, wherein the RS resource set includes at least one RS resource.

3. The method for transmitting RS signals according to claim 1, characterized in that, Configure sidelink reference signal (RS) resources, including: Configure the RS resources on time-frequency resources within the sidelink data resource pool; or, Configure the RS resources on time-frequency resources outside the side link data resource pool.

4. The method for transmitting RS signals according to claim 1, characterized in that, The indication information of the RS resource transmitted by the transmitter includes: Indication information for RS resources sent within the Side Link Control Information (SCI); or, Send indication information for RS resources within the MAC control unit.

5. The method for transmitting RS signals according to claim 1, characterized in that, The indication information includes: The RS set index information within the time slot where the indication information is located; or... The RS resource index information is located within a specific RS resource set in the time slot where the indication information is located.

6. The method for transmitting RS signals according to claim 1, characterized in that, The indication information includes: set index information corresponding to the RS resource set, wherein the set index information corresponding to the RS resource set includes set index information of the RS resource set within the system frame number SFN period; or, displacement information of the RS resource set at the starting logical timeslot position within the side link data resource pool, and RS resource set index information relative to the starting logical timeslot; or, displacement information of the RS resource set at the starting physical timeslot position within the SFN period, and RS resource set index information relative to the starting physical timeslot.

7. The method for transmitting RS signals according to claim 1, characterized in that, The indication information includes a trigger result, which indicates the RS measurement result fed back by the receiving end on the indicated, configured, or pre-configured resource. The indication information is also used to trigger the receiving end to detect the RS signal according to the received RS resource indication information and to feed back the RS measurement result.

8. The method for transmitting RS signals according to claim 7, characterized in that, The RS measurement results include beam quality information of the PSSCH of the RS resource, RS resource index information in the RS resource set corresponding to PSCCH / PSSCH, received power RSRP of the RS signal, interference signal-to-noise ratio SINR of the RS signal, and distance information from the transmitter to the receiver.

9. The method for transmitting RS signals according to claim 1, characterized in that, The method further includes: The indication information includes a second identification information located within the side link control information (SCI). The transmitter uses the second identification information to indicate whether the RS signal has been transmitted on the RS resource set corresponding to the PSCCH / PSSCH in the time slot where the indication information is located. The relationship between the PSCCH / PSSCH in the time slot where the indication information is located and the corresponding RS resource set is a unique and definite resource mapping relationship between the resources of the PSCCH / PSSCH in the time slot where the indication information is located and the configured or pre-configured RS resource set. Furthermore, the resources of different PSCCH / PSSCHs correspond to different beam RS resource sets.

10. An RS signal transmitting device, characterized in that, include: The configuration module is used to configure the side link reference signal (RS) resources; A transmitting module is configured to transmit indication information of the RS resource via a transmitter, and transmit RS signals on the RS resource indicated by the indication information. The indication information includes: first identification information and third identification information; or, second identification information and the third identification information; wherein, the first identification information is used to indicate whether an RS signal has been transmitted on a determined RS resource on the Physical Sidelink Shared Channel (PSSCH) of the time slot where the indication information is located; the second identification information is used to indicate whether an RS signal has been transmitted on an RS resource within the RS resource set corresponding to the Physical Sidelink Control Channel (PSCCH) or PSSCH of the time slot where the indication information is located; the third identification information is used to indicate whether the spatial filters of the signals transmitted by multiple RS resources on the RS resource set corresponding to the PSCCH or PSSCH of the time slot where the indication information is located are the same. The device is also configured to: indicate the starting time slot index of the RS resource set and the RS group index number at the start of the RS resource time slot via the transmitter; indicate via the transmitter that different RS resources at the corresponding resource group location transmit different beams, or indicate that different RS resources at the corresponding resource group location transmit the same beam.

11. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, wherein the computer program is configured to execute the method described in any one of claims 1 to 9 when it is run.

12. An electronic device, characterized in that, The method includes a memory and a processor, wherein the memory stores a computer program and the processor is configured to perform the method of any one of claims 1 to 9 through the computer program.

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