A communication method, device and storage medium based on side link

Abstract

The present disclosure relates to a sidelink-based communication method, apparatus, and storage medium. The method, performed by a first device, includes: transmitting multiple reference signals, each corresponding to a different reference signal resource; wherein the multiple reference signals are used for sidelink beam measurement. The first device transmits multiple reference signals for sidelink beam measurement, thereby implementing a design of reference signals for beam measurement in Sidelink and improving the performance of Sidelink beam-based transmission.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a sidelink-based communication method, device, and storage medium. Background Art

[0002] In New Radio (NR), especially when the communication frequency band is in Frequency Range 2 (FR2), beam-based transmission and reception are required to ensure coverage due to the rapid attenuation of high-frequency channels. To achieve beam-based transmission, beam measurement is required. NR mainly uses at least one of the Synchronization Signal Block (SSB) and the Channel State Information Reference Signal (CSI-RS) for beam measurement.

[0003] Among them, the implementation of beam measurement based on sidelink communication is being studied. Summary of the Invention

[0004] To overcome the problems existing in the related art, the present disclosure provides a communication method, device and storage medium based on a side link.

[0005] According to a first aspect of an embodiment of the present disclosure, a sidelink-based communication method is provided, where the method is performed by a first device and includes:

[0006] Send multiple reference signals, each reference signal corresponding to a different reference signal resource;

[0007] The multiple reference signals are used for side link beam measurement.

[0008] According to a second aspect of an embodiment of the present disclosure, a sidelink-based communication method is provided, where the method is performed by a second device and includes:

[0009] receiving a plurality of reference signals, each reference signal corresponding to a different reference signal resource;

[0010] The multiple reference signals are used for side link beam measurement.

[0011] According to a third aspect of an embodiment of the present disclosure, a sidelink-based communication device is provided, including:

[0012] a sending unit configured to send a plurality of reference signals, each reference signal corresponding to a different reference signal resource;

[0013] The multiple reference signals are used for side link beam measurement.

[0014] According to a fourth aspect of an embodiment of the present disclosure, a sidelink-based communication device is provided, including:

[0015] a receiving unit configured to receive a plurality of reference signals, each reference signal corresponding to a different reference signal resource;

[0016] The multiple reference signals are used for side link beam measurement.

[0017] According to a fifth aspect of an embodiment of the present disclosure, a sidelink-based communication device is provided, including:

[0018] processor;

[0019] a memory for storing processor-executable instructions;

[0020] The processor is configured to: execute the method as described in the first aspect or any one of the embodiments of the first aspect.

[0021] According to a sixth aspect of an embodiment of the present disclosure, a sidelink-based communication device is provided, including:

[0022] processor;

[0023] a memory for storing processor-executable instructions;

[0024] The processor is configured to: execute the method as described in the second aspect or any one of the embodiments of the second aspect.

[0025] According to the seventh aspect of an embodiment of the present disclosure, a storage medium is provided, in which instructions are stored. When the instructions in the storage medium are executed by a processor of a first device, the first device is enabled to execute the method described in the first aspect or any one of the embodiments of the first aspect.

[0026] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is provided, in which instructions are stored. When the instructions in the storage medium are executed by a processor of a second device, the second device is enabled to execute the method described in the second aspect or any one of the embodiments of the second aspect.

[0027] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: multiple reference signals for sidelink beam measurement are sent through the first device, the design of reference signals for beam measurement is implemented in the sidelink, and the performance of the sidelink based on beam transmission is improved.

[0028] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0030] Figure 1 The figure is a schematic diagram of a wireless communication system according to an exemplary embodiment.

[0031] Figure 2 The figure is a flowchart of a sidelink-based communication method according to an exemplary embodiment.

[0032] Figure 3 The present invention is a flowchart of a method for indicating that reference signal resources in each time slot correspond to different beam directions according to an exemplary embodiment.

[0033] Figure 4 The present invention is a flowchart of a method for indicating that reference signal resources in each time slot correspond to different beam directions according to an exemplary embodiment.

[0034] Figure 5 The present invention is a flowchart of a method for indicating that reference signal resources in each time slot correspond to different beam directions according to an exemplary embodiment.

[0035] Figure 6 The present invention is a flowchart of a method for indicating that reference signal resources in each time slot correspond to different beam directions according to an exemplary embodiment.

[0036] Figure 7 The present invention is a flowchart of a method for indicating that reference signal resources in the same time slot correspond to different beam directions according to an exemplary embodiment.

[0037] Figure 8 The present invention is a flowchart of a method for indicating that reference signal resources in the same time slot correspond to different beam directions according to an exemplary embodiment.

[0038] Figure 9 The present invention is a flowchart of a method for indicating that reference signal resources in the same time slot correspond to different beam directions according to an exemplary embodiment.

[0039] Figure 10 The present invention is a flowchart of a method for indicating that reference signal resources in the same time slot correspond to different beam directions according to an exemplary embodiment.

[0040] Figure 11The figure is a flowchart of a sidelink-based communication method according to an exemplary embodiment.

[0041] Figure 12 The figure is a flowchart of a sidelink-based communication method according to an exemplary embodiment.

[0042] Figure 13 The present invention is a flowchart of a method for indicating that reference signal resources in each time slot correspond to different beam directions according to an exemplary embodiment.

[0043] Figure 14 The present invention is a flowchart of a method for indicating that reference signal resources in each time slot correspond to different beam directions according to an exemplary embodiment.

[0044] Figure 15 The present invention is a flowchart of a method for indicating that reference signal resources in each time slot correspond to different beam directions according to an exemplary embodiment.

[0045] Figure 16 The present invention is a flowchart of a method for indicating that reference signal resources in each time slot correspond to different beam directions according to an exemplary embodiment.

[0046] Figure 17 The present invention is a flowchart of a method for indicating that reference signal resources in the same time slot correspond to different beam directions according to an exemplary embodiment.

[0047] Figure 18 The present invention is a flowchart of a method for indicating that reference signal resources in the same time slot correspond to different beam directions according to an exemplary embodiment.

[0048] Figure 19 The present invention is a flowchart of a method for indicating that reference signal resources in the same time slot correspond to different beam directions according to an exemplary embodiment.

[0049] Figure 20 The present invention is a flowchart of a method for indicating that reference signal resources in the same time slot correspond to different beam directions according to an exemplary embodiment.

[0050] Figure 21 The figure is a flowchart of a sidelink-based communication method according to an exemplary embodiment.

[0051] Figure 22 The figure is a block diagram of a sidelink-based communication device according to an exemplary embodiment.

[0052] Figure 23 The figure is a block diagram of a sidelink-based communication device according to an exemplary embodiment.

[0053] Figure 24 The figure is a block diagram of a sidelink-based communication device according to an exemplary embodiment.

[0054] Figure 25 The figure is a block diagram of a sidelink-based communication device according to an exemplary embodiment. DETAILED DESCRIPTION

[0055] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different drawings represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present disclosure.

[0056] In order to better understand the sidelink-based communication method and apparatus provided by the embodiments of the present disclosure, the communication system to which the embodiments of the present disclosure are applicable is first described below.

[0057] The sidelink-based communication method of the embodiment of the present disclosure can be applied to Figure 1 In the wireless communication system shown in FIG. Figure 1 As shown, the wireless communication system includes network equipment and terminals. The terminals are connected to the network equipment and / or other terminals via wireless resources and perform data transmission.

[0058] It is understandable that Figure 1 The wireless communication system shown is only for schematic illustration. The wireless communication system may also include other network devices, such as core network devices, wireless relay devices, and wireless backhaul devices. Figure 1 The embodiment of the present disclosure does not limit the number of network devices and terminals included in the wireless communication system.

[0059] It can be further understood that the wireless communication system of the embodiment of the present disclosure is a network that provides wireless communication functions. The wireless communication system can adopt different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and carrier sense multiple access with collision avoidance. According to factors such as the capacity, rate, and latency of different networks, the network can be divided into 2G (English: generation) network, 3G network, 4G network or future evolution network, such as 5G network. 5G network can also be called new radio (NR). For the convenience of description, the present disclosure sometimes refers to the wireless communication network as simply a network.

[0060] Furthermore, the network devices involved in the present disclosure may also be referred to as wireless access network devices. The wireless access network devices may be: base stations, evolved node Bs (base stations), home base stations, access points (APs) in wireless fidelity (WIFI) systems, wireless relay nodes, wireless backhaul nodes, transmission points (TPs) or transmission and reception points (TRPs), etc. They may also be gNBs in NR systems, or they may be components or part of devices that constitute base stations. It should be understood that in the embodiments of the present disclosure, the specific technologies and specific device forms used by the network devices are not limited. In the present disclosure, the network devices may provide communication coverage for a specific geographical area and may communicate with terminals located within the coverage area (cell). In addition, when it is a vehicle-to-everything (V2X) communication system, the network devices may also be vehicle-mounted devices.

[0061] Furthermore, the terminal involved in the present disclosure may also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., which is a device that provides voice and / or data connectivity to users. For example, the terminal can be a handheld device with wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminals are: smart phones (Mobile Phones), customer premises equipment (Customer Premise Equipment, CPE), pocket computers (Pocket Personal Computers, PPCs), handheld computers, personal digital assistants (Personal Digital Assistants, PDAs), laptops, tablet computers, wearable devices, or vehicle-mounted devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

[0062] Among them, the interfaces between base stations and between terminals can be specified by protocols such as LTE and NR, and the interfaces between terminals can be specified by the sidelink protocol to achieve direct connection between the two terminals.

[0063] As mentioned above, in NR, especially when using the FR2 communication band, beam-based transmission and reception are required to ensure coverage due to the rapid attenuation of high-frequency channels. Beam measurement is required to implement beam-based transmission. NR primarily uses at least one of the SSB and CSI-RS for beam measurement. Sidelink does not support beam-based transmission, so to introduce it, a reference signal for beam measurement must be designed. The technical challenge of transmitting this reference signal for beam measurement is a challenge.

[0064] In view of this, an embodiment of the present disclosure provides a sidelink-based communication method, in which a first device sends multiple reference signals for sidelink beam measurement, implements the design of reference signals for beam measurement in sidelink, and improves the performance of sidelink-based beam transmission.

[0065] In the disclosed embodiment, beam refers to beam, or spatial relation information, spatial setting, spatial Rx parameter, Tx spatial filter, spatial domain receive filters, spatial domain transmission filter, Transmission Configuration Indication (TCI) status, Quasi Co Location (QCL) type D, etc.

[0066] The above-mentioned reference signal in the sidelink can be transmitted together with the Physical Sidelink Shared Channel (PSSCH). Each reference signal can correspond to a different reference signal resource. The reference signal resource configuration includes the time domain starting symbol position and the frequency domain resource position and port indication. In the embodiment of the present disclosure, by configuring different parameters of the transmitted reference signal resource, it is possible to use different reference signal resources to indicate different beams in the sidelink, thereby realizing beam measurement based on the reference signal in the reference signal resource.

[0067] Figure 2 is a flow chart showing a sidelink-based communication method according to an exemplary embodiment. Figure 2 As shown, the method is executed by the first device and includes the following steps.

[0068] In step S21 , a plurality of reference signals are transmitted.

[0069] Each reference signal corresponds to a different reference signal resource, and the multiple reference signals are used for sidelink beam measurement.

[0070] In an embodiment of the present disclosure, a first device may be a device in a sidelink communication system. The first device transmits multiple reference signals to perform sidelink beam measurement based on the multiple reference signals. In one example, the first device may transmit the multiple reference signals to one or more second devices, with the first device and the second devices communicating via sidelink. The multiple reference signals may be used to perform sidelink beam measurement between the first device and the second devices.

[0071] In the embodiments of the present disclosure, each reference signal may correspond to a different reference signal resource. Different reference signal resources may correspond to different beam directions, or correspond to the same beam direction but be received using different receive beams. Each reference signal resource may be used to transmit reference signals of one or more second devices.

[0072] By adopting the technical solution of the embodiment of the present disclosure, multiple reference signals for sidelink beam measurement are sent through the first device, and the design of reference signals for beam measurement is implemented in the sidelink, thereby improving the performance of sidelink beam-based transmission.

[0073] In the embodiment of the present disclosure, at least two of the reference signal resources corresponding to the multiple reference signals may be located in different time slots. In other words, at least two of the reference signal resources corresponding to the multiple reference signals are transmitted in different time slots.

[0074] In the embodiment of the present disclosure, the time slot where the reference signal resource is located may also include resources of the physical sidelink shared channel (Physical Sidelink Control Channel, PSSCH) for sidelink communication of the first device, and the symbols occupied by the reference signal resource overlap or do not overlap with the symbols occupied by the PSSCH resources. That is, a time slot may include a reference signal resource, and the reference signal resource is sent together with the PSSCH resources in one time slot. It should be noted that the time slot where the reference signal resource is located contains the time domain resources of the PSSCH. It is understandable that the time domain resource occupancy of the reference signal resource and the PSSCH is a resource set subset of the corresponding resource set on the time slot. It is understandable that when the symbols occupied by the reference signal resource do not overlap with the symbols occupied by the PSSCH resources, the resource set subset occupied by the reference signal resource is different from the resource set subset occupied by the PSSCH. When the symbols occupied by the reference signal resource overlap with the symbols occupied by the PSSCH resources, the resource set subset occupied by the reference signal resource and the resource set subset occupied by the PSSCH have the same part.

[0075] Among them, the reference signal resources and the resources of PSSCH can be sent in a frequency division multiplexing (FDM) manner. At this time, the symbols occupied by the reference signal resources overlap with the symbols occupied by the PSSCH resources, that is, the symbols occupied by the reference signal resources also have PSSCH resources. And the PSSCH resources may also occupy symbols not occupied by the reference signal resources in the time slot. On the symbols occupied by both the reference signal resources and the PSSCH resources, the first device needs to use the same beam to send the reference signal and PSSCH. Alternatively, the reference signal resources and the resources of PSSCH can also be sent in a time slot in a time slot using time division multiplexing (TDM). At this time, the symbols occupied by the reference signal resources do not overlap with the symbols occupied by the PSSCH resources. Since the reference signal resources and the PSSCH resources occupy different symbols, the first device can use different beams to send the reference signal and PSSCH in different symbols.

[0076] In an embodiment of the present disclosure, a first device transmits in multiple time slots, each of which includes reference signal resources and PSSCH resources. If the beam directions corresponding to the reference signal resources are different, it is necessary to indicate that the beam directions corresponding to the reference signal resources are different. In one example, an implicit indication can be used to indicate that the beam directions corresponding to the reference signal resources are different.

[0077] Figure 3 is a flowchart of a method for indicating that reference signal resources in each time slot correspond to different beam directions according to an exemplary embodiment. Figure 3 As shown, the method includes the following steps:

[0078] In step S31, it is determined that the reference signal resources include N reference signal resources, and the N reference signal resources correspond one-to-one to N time slots.

[0079] The first device may determine that the reference signal resources include N reference signal resources based on configuration information of the network device and / or the second device; the first device may also determine that the reference signal resources include N reference signal resources based on a default rule.

[0080] In step S32, each of the N time slots is configured to include reference signal resources and PSSCH resources.

[0081] In step S33, resources of the PSSCH included in different time slots in the N time slots are configured to have at least the same first parameter.

[0082] Wherein, N is a positive integer.

[0083] In an embodiment of the present disclosure, by configuring the PSSCH resources included in different time slots in N time slots to have at least the same first parameter, it is possible to indicate that the N reference signal resources in the N time slots where the PSSCH resources with the same first parameter are located correspond to different beam directions.

[0084] In one example, multiple reference signals sent by a first device correspond to N reference signal resources. The N reference signal resources correspond one-to-one to N time slots, and each time slot includes reference signal resources and PSSCH resources. In this case, there is also a one-to-one correspondence between N PSSCH resources and N time slots. Furthermore, if the N PSSCH resources have the same first parameter, it can be indicated that the reference signal resources in the time slots where the N PSSCH resources are located correspond to different beam directions.

[0085] In the embodiment of the present disclosure, the first parameter includes at least one of the following serial numbers a to l:

[0086] a. Symbol position of PSSCH resources in the time slot;

[0087] b. The frequency domain resource location of PSSCH resources in the time slot;

[0088] c. The frequency domain bandwidth of PSSCH resources in the time slot;

[0089] d. Modulation and Coding Scheme (MCS) of PSSCH resources;

[0090] e. The demodulation reference signal (DMRS) pattern and number of ports for PSSCH resources;

[0091] f. New data indicator for PSSCH resources;

[0092] g. Hybrid Automatic Repeat reQuest (HARQ) process number for PSSCH resources;

[0093] h. Redundancy Version (RV);

[0094] i. Source ID;

[0095] j. Destination ID;

[0096] k.cast type;

[0097] 1. Channel State Information (CSI) request.

[0098] Figure 4 is a flowchart of a method for indicating that reference signal resources in each time slot correspond to different beam directions according to an exemplary embodiment, wherein steps S41 and S42 are Figure 3 Steps S31 and S32 in the embodiment shown are the same and will not be described in detail here. Figure 4 As shown, further, the method also includes the following steps:

[0099] In step S43, reference signal resources included in different time slots in the N time slots are configured to have at least the same first parameter.

[0100] In the embodiment of the present disclosure, by configuring the reference signal resources included in different time slots in N time slots to have at least the same second parameter, it is possible to indicate that the N reference signal resources in the N time slots where the reference signal resources with the same second parameter are located correspond to different beam directions.

[0101] In one example, multiple reference signals transmitted by a first device correspond to N reference signal resources. The N reference signal resources correspond one-to-one to N time slots, and each time slot includes reference signal resources and PSSCH resources. Thus, N PSSCH resources also correspond one-to-one to the N time slots. Furthermore, if the N reference signal resources have the same second parameter, this may indicate that the reference signal resources in the time slots containing the N reference signal resources correspond to different beam directions.

[0102] In the embodiment of the present disclosure, the second parameter includes at least one of the following serial numbers a to c:

[0103] a. Symbol position of the reference signal resource in the time slot;

[0104] b. The frequency domain resource position of the reference signal resource in the time slot;

[0105] c. The number of ports corresponding to the reference signal resource.

[0106] Figure 3 The embodiment shown implements the indication that each reference signal resource corresponds to a different beam direction by indicating that the reference signal resources in the time slot where the PSSCH resources having the same first parameter are located correspond to different beam directions. Figure 4The illustrated embodiment implements the indication that each reference signal resource corresponds to a different beam direction by indicating that the reference signal resources in the time slots containing reference signal resources having the same first parameter correspond to different beam directions. Furthermore, the indication that the reference signal resources in each time slot correspond to different beam directions can also be implemented based on a default rule.

[0107] Figure 5 is a flowchart of a method for indicating that reference signal resources in each time slot correspond to different beam directions according to an exemplary embodiment, wherein steps S51 and S52 are Figure 3 Steps S31 and S32 in the embodiment shown are the same and will not be described in detail here. Figure 5 As shown, further, the method also includes the following steps:

[0108] In step S53, the value of N is determined based on a default rule, and the beam directions corresponding to the N reference signal resources are different.

[0109] In the embodiments of the present disclosure, by determining the value of N based on a default rule, the reference signal resources in N time slots are defaulted to correspond to different beam directions, thereby enabling indication that less than or equal to N reference signal resources correspond to different beam directions. The default N time slots may be consecutive or discontinuous. Similarly, the second device may also determine the same value of N based on the same default rule.

[0110] Furthermore, when the number of reference signal resources corresponding to different beam directions is greater than N, a step-by-step indication method can be used to implement the indication of each reference signal resource corresponding to a different beam direction. For example, assuming that the default value of N is 2, it means that the reference signal resources in the two time slots correspond to different beam directions. At this time, if the first device corresponds to four beam directions, namely beam 1, beam 2, beam 3 and beam 4, the indication can be performed in two steps. First, the four beam directions are combined into two wide beams, where wide beam 1 includes beam 1 and beam 2, and wide beam 2 includes beam 3 and beam 4. The reference signals on the first reference signal resource and the second reference signal resource are respectively sent in the directions corresponding to wide beam 1 and wide beam 2, and the first reference signal resource is located in the first time slot and the second reference signal resource is located in the second time slot. At this time, since the default value of N is 2, it can be indicated that the reference signal resources in the first time slot and the second time slot correspond to different beam directions, so that the second device can perform beam measurement.

[0111] The second device measures the received wide beam 1 and wide beam 2 and returns the measurement results. The first device determines to send on wide beam 1 (or wide beam 2) based on the measurement results, and then splits the wide beam 1 (or wide beam 2) into beam 1 and beam 2 (or beam 3 and beam 4). The first device sends reference signals on the third reference signal resource and the fourth reference signal resource in the directions corresponding to beam 1 and beam 2, respectively, and the third reference signal resource is located in the third time slot and the fourth reference signal resource is located in the fourth time slot. At this time, since the default value of N is 2, it can also indicate that the reference signal resources in the third time slot and the fourth time slot correspond to different beam directions, so that the second device can perform beam measurement.

[0112] By adopting the technical solution of the embodiment of the present invention, an implicit indication method is used to indicate that the beam direction corresponding to the reference signal resource in each time slot is different, and the design of the reference signal for beam measurement is simply and efficiently implemented in the sidelink, thereby improving the performance of the sidelink based on beam transmission.

[0113] In another example, an explicit indication method may be used to indicate that the beam directions corresponding to the reference signal resources in each time slot are different.

[0114] Figure 6 is a flowchart of a method for indicating that reference signal resources in each time slot correspond to different beam directions according to an exemplary embodiment. Figure 6 As shown, the method includes the following steps:

[0115] In step S61, it is determined that the reference signal resources include N reference signal resources, and the N reference signal resources correspond one-to-one to N time slots.

[0116] In step S62, the first device determines a first reference signal resource set, where the first reference signal resource set includes the N reference signal resources.

[0117] In step S63, a repetitive transmission state is configured for the first reference signal resource set.

[0118] In an embodiment of the present disclosure, the first device may determine a first reference signal resource set, and determine an identifier (Identity, ID or index) of the reference signal resources contained in the first reference signal resource set, and / or the number of reference signal resources. Furthermore, a repetition transmission state Repetition may be configured for the first reference signal resource set. Repetition includes a repetition transmission on state (on) or off state (off), that is, Repetition may be configured as on or off. When Repetition is configured as on, it indicates that the reference signal resources in the first reference signal resource set correspond to the same beam direction; when Repetition is configured as off, it indicates that the reference signal resources in the first reference signal resource set correspond to different beam directions. That is, in response to Repetition being on, the reference signal resources included in different time slots in the N time slots correspond to the same beam direction; in response to Repetition being off, the reference signal resources included in different time slots in the N time slots correspond to different beam directions. In this case, the first device needs to send the above configuration information to facilitate the second device to determine at least one of the information including the identification, quantity and whether the beams of the reference signal resources included in the reference signal resource set are the same based on the configuration information.

[0119] By adopting the technical solution of the embodiment of the present invention, it is indicated that the beam corresponding to each reference signal resource is different by explicitly indicating the repeated transmission status, and the design of the reference signal for beam measurement is clearly and unambiguously implemented in the sidelink, thereby improving the performance of the sidelink based on beam transmission.

[0120] In the disclosed embodiments, a time slot may include at least one reference signal resource. That is, at least two of the reference signal resources corresponding to multiple reference signals may be transmitted in the same time slot. The same time slot may be a single time slot or multiple consecutive time slots.

[0121] In the disclosed embodiments, one or more reference signal resources are included in the same time slot, and the multiple reference signal resources correspond to multiple different beam directions. In other words, the reference signal resources of multiple different beam directions can be sent in one time slot or occupy multiple consecutive time slots for transmission.

[0122] In the embodiment of the present disclosure, the first symbol occupied by each reference signal resource in the same time slot may include an automatic gain adjustment symbol before it; and / or the last symbol occupied by at least the last reference signal resource may include a guard interval symbol after it.

[0123] In traditional sidelink methods, the first symbol of each timeslot is used for automatic gain control (AGC). This is because sidelink is transmitted between terminals, and the distance between terminals changes frequently, resulting in large variations in received power at the receiving end. Therefore, the first symbol of each timeslot is reserved for power adjustment at the receiving end. Furthermore, in traditional sidelink methods, the last symbol of each timeslot is a guard interval symbol (gap) to prevent interference with the downlink (DL) and uplink (UL) of the air interface (Uu port).

[0124] The technical solution of the disclosed embodiments configures multiple reference signal resources in a time slot. If each reference signal resource corresponds to a different beam direction, the power of each beam direction will also be different for the second receiving device. Therefore, an AGC symbol must be placed before the first symbol occupied by each reference signal resource in the same time slot. At the same time, a guard interval symbol must still be placed after the last symbol occupied by at least the last reference signal resource in the same time slot.

[0125] In an embodiment of the present disclosure, if at least two reference signal resources corresponding to multiple reference signals sent by a first device are transmitted in the same time slot, it is necessary to indicate that the beam directions corresponding to the reference signal resources are different. In one example, an explicit indication can be used to indicate that the beam directions corresponding to the reference signal resources are different.

[0126] Figure 7 is a flowchart of a method for indicating that each reference signal resource in the same time slot corresponds to a different beam direction according to an exemplary embodiment. Figure 7 As shown, the method includes the following steps:

[0127] In step S71, the first device determines a second reference signal resource set, where the second reference signal resource set includes identification information and / or quantity information of a plurality of reference signal resources.

[0128] In step S72, a repetition transmission state is configured for the second reference signal resource set.

[0129] In an embodiment of the present disclosure, the first device can determine the second reference signal resource set, and determine the identification information and / or quantity information of the reference signal resources contained in the second reference signal resource set. Furthermore, the repetition transmission state Repetition can also be configured for the second reference signal resource set. Repetition includes repetition on or off, that is, Repetition can be configured as on or off. When Repetition is configured as on, it indicates that the reference signal resources in the second reference signal resource set correspond to the same beam direction; when Repetition is configured as off, it indicates that the reference signal resources in the second reference signal resource set correspond to different beam directions. That is, in response to Repetition being on, different reference signal resources contained in the same time slot correspond to the same beam direction; in response to Repetition being off, different reference signal resources contained in the same time slot correspond to different beam directions. In this case, the first device needs to send the above-mentioned configuration information to facilitate the second device to determine at least one of the information including the identification, quantity and whether the beams of the reference signal resources contained in the reference signal resource set are the same based on the configuration information.

[0130] By adopting the technical solution of the embodiment of the present disclosure, the beam directions corresponding to different reference signal resources in the same time slot are different, which is indicated by repeated transmission status display indication. The design of the reference signal for beam measurement is clearly and unambiguously implemented in the sidelink, thereby improving the performance of the sidelink based on beam transmission.

[0131] In another example, an implicit indication method may be used to indicate that the beam directions corresponding to the reference signal resources in the same time slot are different.

[0132] Figure 8 is a flowchart of a method for indicating that each reference signal resource in the same time slot corresponds to a different beam direction according to an exemplary embodiment. Figure 8 As shown, the method includes the following steps:

[0133] In step S81, it is determined that multiple reference signal resources included in the same time slot correspond to one or more third reference signal resource sets.

[0134] Different reference signal resources in the same third reference signal resource set correspond to different beam directions.

[0135] In the embodiments of the present disclosure, by configuring multiple reference signal resources within the same time slot to correspond to one or more third reference signal resource sets, and different reference signal resources within the same third reference signal resource set to correspond to different beam directions, it is possible to indicate whether different reference signal resources within the same time slot correspond to different beam directions. It is understood that when different reference signal resources within the same time slot belong to the same third reference signal resource set, the different reference signal resources correspond to different beam directions.

[0136] Figure 9 is a flowchart of a method for indicating that each reference signal resource in the same time slot corresponds to a different beam direction according to an exemplary embodiment, wherein step S91 is Figure 8 Step S81 in the embodiment shown is the same and will not be described again here. Figure 9 As shown, the method further includes the following steps:

[0137] In step S92 , the number of reference signal resources included in the third reference signal resource set is determined based on a default rule.

[0138] In the embodiments of the present disclosure, by setting the number of reference signal resources included in the third reference signal resource set to a default value, different reference signal resources belonging to the same third reference signal resource set within the same time slot can be assigned different beam directions. In this case, the second device can also determine the number of reference signal resources included in the third reference signal resource set based on the same default rule.

[0139] In the embodiment of the present disclosure, whether the beam directions corresponding to the reference signal resources included in the third reference signal resource set are the same may be indicated by configuring a repetition transmission state for the third reference signal resource set.

[0140] In the embodiment of the present disclosure, there are no PSSCH resources in the symbols occupied by the reference signal resources.

[0141] Figure 10 is a flowchart of a method for indicating that each reference signal resource in the same time slot corresponds to a different beam direction according to an exemplary embodiment. Figure 10 As shown, the method includes the following steps:

[0142] In step S101, the symbol positions occupied by the configured reference signal resources correspond to the PSSCH resources allocated using mini-slots as time-domain scheduling units.

[0143] In step S102, different PSSCH resources at symbol positions occupied by different reference signal resources are configured to have at least the same third parameter.

[0144] In the embodiment of the present disclosure, by configuring a PSSCH resource at the symbol position occupied by each reference signal resource and sending them together in an FDM manner, that is, the PSSCH resource is sent with a small time slot as the time domain scheduling unit, and further configuring the different PSSCH resources at the symbol positions occupied by different reference signal resources to have at least the same third parameter, it is possible to achieve different beam directions corresponding to the reference signal resources corresponding to the PSSCH resources with the same third parameter. Among them, the small time slot is relative to the granularity of the time slot. When scheduling with the time slot as the granularity, the minimum number of occupied symbols is 3; the number of symbols occupied by the small time slot can be 1 or 2. Moreover, a time slot can contain multiple small time slot scheduling units. A small time slot can also occupy the symbols of two adjacent time slots.

[0145] In the embodiment of the present disclosure, the third parameter includes at least one of the following sequence numbers a to l:

[0146] a. The number of symbols occupied by PSSCH resources in the time slot;

[0147] b. The frequency domain resource location of the PSSCH resource in the time slot;

[0148] c. Frequency domain bandwidth of PSSCH resources in the time slot;

[0149] d. MCS of PSSCH resources;

[0150] e. DMRS pattern and number of ports of PSSCH resources;

[0151] f. New data indicator of PSSCH resources;

[0152] g. HARQ processing number of PSSCH resources;

[0153] h. Redundancy Version (RV);

[0154] i.source ID;

[0155] j.destination ID;

[0156] k.cast type;

[0157] l.CSI request.

[0158] By adopting the technical solution of the embodiment of the present invention, the beam directions corresponding to different reference signal resources in the same time slot are different, which is indicated by repeated transmission status display indication. The design of the reference signal for beam measurement is simply and efficiently implemented in the sidelink, thereby improving the performance of the sidelink based on beam transmission.

[0159] Figure 11 is a flow chart of a sidelink-based communication method according to an exemplary embodiment, wherein step S111 is Figure 2 Step S21 in the embodiment shown is the same and will not be described again here. Figure 11 As shown, the method further includes the following steps:

[0160] In step S112, the first device receives or sends first reference signal resource configuration information and / or second reference signal resource configuration information.

[0161] The first device receiving the first reference signal resource configuration information and / or the second reference signal resource configuration information includes: the first device receiving the first reference signal resource configuration information and / or the second reference signal resource configuration information from the second device and / or the network device.

[0162] The first reference signal resource configuration information and / or the second reference signal resource configuration information are used to indicate at least one of the time domain resource information, frequency domain resource information, number of ports and beam information of the N reference signal resources contained in the first reference signal resource set and / or the second reference signal resource set.

[0163] In the embodiments of the present disclosure, the first reference signal resource configuration information may indicate at least one of time domain resource information, frequency domain resource information, number of ports, and beam information of the N reference signal resources included in the first reference signal resource set, and / or the second reference signal resource configuration information may indicate at least one of time domain resource information, frequency domain resource information, number of ports, and beam information of the N reference signal resources included in the second reference signal resource set. The beam information includes whether the beams of the N reference signal resources are the same or different.

[0164] In an embodiment of the present disclosure, the reference signal includes at least one of the following: a sidelink channel state information reference signal (Sidelink Channel State Information-Reference Signal, Sidelink CSI-RS), a sidelink synchronization signal (Synchronization Signal, S-SS) and a physical sidelink broadcast channel (Physical Sidelink Broadcast Channel, PSBCH) transmission block.

[0165] Figure 12 is a flow chart of a sidelink-based communication method according to an exemplary embodiment. Figure 12 As shown, the method is performed by the second device and includes the following steps:

[0166] In step S121 , a plurality of reference signals are received.

[0167] Each reference signal corresponds to a different reference signal resource, and the multiple reference signals are used for sidelink beam measurement.

[0168] In an embodiment of the present disclosure, a second device may be a device in a sidelink communication system. The second device receives multiple reference signals to perform sidelink beam measurement based on the multiple reference signals. In one example, the second device may receive multiple reference signals from one or more first devices, with the first devices communicating with the second devices via sidelink. The multiple reference signals may be used to perform sidelink beam measurement between the first and second devices.

[0169] In the embodiments of the present disclosure, each reference signal may correspond to a different reference signal resource. Different reference signal resources may correspond to different beam directions, or correspond to the same beam direction but be received using different receive beams. Each reference signal resource may be used to transmit multiple reference signals from one or more first devices.

[0170] By adopting the technical solution of the embodiment of the present disclosure, multiple reference signals for sidelink beam measurement are received by the second device, and the design of reference signals for beam measurement is implemented in the sidelink, thereby improving the performance of sidelink beam-based transmission.

[0171] In the embodiment of the present disclosure, at least two of the reference signal resources corresponding to the multiple reference signals may be located in different time slots. In other words, at least two of the reference signal resources corresponding to the multiple reference signals are transmitted in different time slots.

[0172] In the embodiment of the present disclosure, the time slot where the reference signal resource is located may also include the resources of the PSSCH used for the sidelink communication of the first device, and the symbols occupied by the reference signal resource overlap or do not overlap with the symbols occupied by the PSSCH resources. That is, a time slot may include a reference signal resource, and the reference signal resource and the PSSCH resources are sent in one time slot. It should be noted that the time slot where the reference signal resource is located contains the time domain resources of the PSSCH. It is understandable that the time domain resource occupancy of the reference signal resource and the PSSCH is a resource set subset of the corresponding resource set on the time slot. It is understandable that when the symbols occupied by the reference signal resource do not overlap with the symbols occupied by the PSSCH resources, the resource set subset occupied by the reference signal resource is different from the resource set subset occupied by the PSSCH. When the symbols occupied by the reference signal resource overlap with the symbols occupied by the PSSCH resources, the resource set subset occupied by the reference signal resource and the resource set subset occupied by the PSSCH have the same part.

[0173] The reference signal resources and PSSCH resources can be sent together using frequency division multiplexing (FDM). In this case, the symbols occupied by the reference signal resources overlap with the symbols occupied by the PSSCH resources, that is, the symbols occupied by the reference signal resources also have PSSCH resources. The PSSCH resources may also occupy symbols not occupied by the reference signal resources in the time slot. In the symbols occupied by both the reference signal resources and the PSSCH resources, the first device needs to use the same beam to send the reference signal and the PSSCH. Alternatively, the reference signal resources and the PSSCH resources can also be sent in a time slot using time division multiplexing (TDM). In this case, the symbols occupied by the reference signal resources do not overlap with the symbols occupied by the PSSCH resources. Since the reference signal resources and the PSSCH resources occupy different symbols, the first device can use different beams to send the reference signal and the PSSCH in different symbols. It should be noted that the PSSCH sent by the first device together with the reference signal in each time slot may or may not be sent to the second device. That is, the second device may receive the reference signal and the PSSCH in each time slot, or may receive only the reference signal without receiving the PSSCH in at least one time slot.

[0174] In an embodiment of the present disclosure, a second device receives a reference signal in multiple time slots, each of which includes reference signal resources and PSSCH resources. If the beam directions corresponding to the reference signal resources are different, it is necessary to indicate that the beam directions corresponding to the reference signal resources are different. In one example, an implicit indication can be used to indicate that the beam directions corresponding to the reference signal resources are different.

[0175] Figure 13is a flowchart of a method for indicating that reference signal resources in each time slot correspond to different beam directions according to an exemplary embodiment. Figure 13 As shown, the method includes the following steps:

[0176] In step S131 , it is determined that the reference signal resources include N reference signal resources, and the N reference signal resources correspond one-to-one to N time slots.

[0177] The second device may determine that the reference signal resources include N reference signal resources based on configuration information of the network device and / or the first device; the second device may also determine that the reference signal resources include N reference signal resources based on a default rule.

[0178] In step S132, configuration information of the first device and / or the network device is received, and it is determined that each of the N time slots includes reference signal resources and PSSCH resources.

[0179] In step S133, configuration information of the first device and / or the network device is received, and it is determined that PSSCH resources included in different time slots in the N time slots have at least the same first parameter.

[0180] Wherein, N is a positive integer.

[0181] In an embodiment of the present disclosure, by configuring the PSSCH resources included in different time slots in N time slots to have at least the same first parameter, it is possible to indicate that the N reference signal resources in the N time slots where the PSSCH resources with the same first parameter are located correspond to different beam directions.

[0182] In the embodiment of the present disclosure, the first parameter includes at least one of the following serial numbers a to l:

[0183] a. Symbol position of PSSCH resources in the time slot;

[0184] b. The frequency domain resource location of PSSCH resources in the time slot;

[0185] c. The frequency domain bandwidth of PSSCH resources in the time slot;

[0186] d. MCS of PSSCH resources;

[0187] e. DMRS pattern and port number of PSSCH resources;

[0188] f. New data indicator of PSSCH resources;

[0189] g. HARQ processing number of PSSCH resources;

[0190] h. Redundancy Version (RV);

[0191] i.source ID;

[0192] j.destination ID;

[0193] k.cast type;

[0194] 1. Channel state information CSI request.

[0195] Figure 14 is a flowchart of a method for indicating that reference signal resources in each time slot correspond to different beam directions according to an exemplary embodiment, wherein steps S141 and S142 are the same as Figure 13 Steps S131 and S132 in the embodiment shown are the same and will not be described in detail here. Figure 14 As shown, further, the method also includes the following steps:

[0196] In step S143, reference signal resources included in different time slots among the N time slots are configured to have at least the same first parameter.

[0197] In the embodiment of the present disclosure, by configuring the reference signal resources included in different time slots in N time slots to have at least the same second parameter, it is possible to indicate that the N reference signal resources in the N time slots where the reference signal resources with the same second parameter are located correspond to different beam directions.

[0198] In the embodiment of the present disclosure, the second parameter includes at least one of the following serial numbers a to c:

[0199] a. Symbol position of the reference signal resource in the time slot;

[0200] b. The frequency domain resource position of the reference signal resource in the time slot;

[0201] c. The number of ports corresponding to the reference signal resource.

[0202] Figure 15 is a flowchart of a method for indicating that reference signal resources in each time slot correspond to different beam directions according to an exemplary embodiment, wherein steps S151 and S152 are the same as Figure 13 Steps S131 and S132 in the embodiment shown are the same and will not be described in detail here. Figure 15 As shown, further, the method also includes the following steps:

[0203] In step S153, the value of N is determined based on a default rule, and the beam directions corresponding to the N reference signal resources are different.

[0204] In the embodiments of the present disclosure, by determining the value of N based on a default rule, the reference signal resources in N time slots are defaulted to correspond to different beam directions, thereby enabling indication that less than or equal to N reference signal resources correspond to different beam directions. The default N time slots may be consecutive or discontinuous. Similarly, the first device may also determine the same value of N based on the same default rule.

[0205] Furthermore, when the number of reference signal resources corresponding to different beam directions is greater than N, a step-by-step indication method can be used to implement the indication of each reference signal resource corresponding to a different beam direction. For example, assuming that the default value of N is 2, it means that the reference signal resources in the two time slots correspond to different beam directions. At this time, if the second device corresponds to four beam directions, namely beam 1, beam 2, beam 3 and beam 4, it can be indicated in two steps. First, the four beam directions are combined into two wide beams, where wide beam 1 includes beam 1 and beam 2, and wide beam 2 includes beam 3 and beam 4. The reference signals on the first reference signal resource and the second reference signal resource are received in the directions corresponding to wide beam 1 and wide beam 2, respectively, and the first reference signal resource is located in the first time slot, and the second reference signal resource is located in the second time slot. At this time, since the default value of N is 2, it can be indicated that the reference signal resources on the first time slot and the second time slot correspond to different beams, so that the second device can perform beam measurement.

[0206] The second device measures the received wide beam 1 and wide beam 2 and returns the measurement results. The first device determines to send on wide beam 1 (or wide beam 2) based on the measurement results, and then splits the wide beam 1 (or wide beam 2) into beam 1 and beam 2 (or beam 3 and beam 4). The second device receives the reference signals on the third reference signal resource and the fourth reference signal resource in the directions corresponding to beam 1 and beam 2, respectively, and the third reference signal resource is located in the third time slot and the fourth reference signal resource is located in the fourth time slot. At this time, since the default value of N is 2, it can also indicate that the reference signal resources in the third time slot and the fourth time slot correspond to different beam directions, so that the second device can perform beam measurement.

[0207] By adopting the technical solution of the embodiment of the present invention, an implicit indication method is used to indicate that the beam direction corresponding to the reference signal resource in each time slot is different, and the design of the reference signal for beam measurement is simply and efficiently implemented in the sidelink, thereby improving the performance of the sidelink based on beam transmission.

[0208] In another example, an explicit indication method may be used to indicate that the beam directions corresponding to the reference signal resources in each time slot are different.

[0209] Figure 16is a flowchart of a method for indicating that reference signal resources in each time slot correspond to different beam directions according to an exemplary embodiment. Figure 16 As shown, the method includes the following steps:

[0210] In step S161 , it is determined that the reference signal resources include N reference signal resources, and the N reference signal resources correspond one-to-one to N time slots.

[0211] In step S162, the second device determines a fourth reference signal resource set, where the fourth reference signal resource set includes the N reference signal resources.

[0212] In step S163 , the repetition transmission status of the fourth reference signal resource set is determined.

[0213] In an embodiment of the present disclosure, the second device may determine a fourth reference signal resource set, and determine an identification ID or index of the reference signal resources contained in the fourth reference signal resource set, and / or the number of reference signal resources. Furthermore, the repetition state Repetition of the fourth reference signal resource set may also be determined. Repetition includes repetition on or off, that is, Repetition can be configured as on or off. When Repetition is configured as on, it indicates that the reference signal resources in the fourth reference signal resource set correspond to the same beam direction; when Repetition is configured as off, it indicates that the reference signal resources in the first reference signal resource set correspond to different beam directions. That is, in response to Repetition being on, the reference signal resources included in different time slots in the N time slots correspond to the same beam direction; in response to Repetition being off, the reference signal resources included in different time slots in the N time slots correspond to different beam directions.

[0214] By adopting the technical solution of the embodiment of the present invention, the beam direction corresponding to each reference signal resource is indicated to be different by explicitly indicating the repeated transmission status, and the design of the reference signal for beam measurement is clearly and unambiguously implemented in the sidelink, thereby improving the performance of the sidelink based on beam transmission.

[0215] In the disclosed embodiments, a time slot may include at least one reference signal resource. That is, at least two of the reference signal resources corresponding to multiple reference signals may be transmitted in the same time slot. The same time slot may be a single time slot or multiple consecutive time slots.

[0216] In the disclosed embodiments, one or more reference signal resources are included in the same time slot, and the multiple reference signal resources correspond to multiple different beam directions. In other words, the reference signal resources of multiple different beam directions can be received in one time slot or occupy multiple consecutive time slots for reception.

[0217] In the embodiment of the present disclosure, the first symbol occupied by each reference signal resource in the same time slot may include an automatic gain adjustment symbol before it; and / or the last symbol occupied by at least the last reference signal resource may include a guard interval symbol after it.

[0218] In an embodiment of the present disclosure, if at least two reference signal resources corresponding to multiple reference signals sent by a first device are transmitted in the same time slot, it is necessary to indicate that the beam directions corresponding to the reference signal resources are different. In one example, an explicit indication can be used to indicate that the beam directions corresponding to the reference signal resources are different.

[0219] Figure 17 is a flowchart of a method for indicating that each reference signal resource in the same time slot corresponds to a different beam direction according to an exemplary embodiment. Figure 17 As shown, the method includes the following steps:

[0220] In step S171, the second device determines a fifth reference signal resource set, where the fifth reference signal resource set includes identification information and / or quantity information of a plurality of reference signal resources.

[0221] In step S172 , the repetition transmission status of the fifth reference signal resource set is determined.

[0222] In an embodiment of the present disclosure, the second device may determine the fifth reference signal resource set, and determine the identification information and / or quantity information of the reference signal resources contained in the fifth reference signal resource set. Furthermore, the repetition transmission state Repetition of the fifth reference signal resource set may also be determined. Repetition includes repetition on or off, that is, Repetition can be configured as on or off. When Repetition is configured as on, it indicates that the reference signal resources in the fifth reference signal resource set correspond to the same beam direction; when Repetition is configured as off, it indicates that the reference signal resources in the fifth reference signal resource set correspond to different beam directions. That is, in response to Repetition being on, different reference signal resources contained in the same time slot correspond to the same beam direction; in response to Repetition being off, different reference signal resources contained in the same time slot correspond to different beam directions.

[0223] By adopting the technical solution of the embodiment of the present disclosure, the beam directions corresponding to different reference signal resources in the same time slot are different, which is indicated by repeated transmission status display indication. The design of the reference signal for beam measurement is clearly and unambiguously implemented in the sidelink, thereby improving the performance of the sidelink based on beam transmission.

[0224] In another example, an implicit indication method may be used to indicate that the beam directions corresponding to the reference signal resources in the same time slot are different.

[0225] Figure 18 is a flowchart of a method for indicating that each reference signal resource in the same time slot corresponds to a different beam direction according to an exemplary embodiment. Figure 18 As shown, the method includes the following steps:

[0226] In step S181, multiple reference signal resources included in the same time slot correspond to one or more sixth reference signal resource sets.

[0227] Different reference signal resources in the same sixth reference signal resource set correspond to different beam directions.

[0228] In the embodiments of the present disclosure, by configuring multiple reference signal resources within the same time slot to correspond to one or more sixth reference signal resource sets, and different reference signal resources within the same sixth reference signal resource set to correspond to different beam directions, it is possible to indicate whether different reference signal resources within the same time slot correspond to different beam directions. It is understood that when different reference signal resources within the same time slot belong to the same sixth reference signal resource set, the different reference signal resources correspond to different beam directions.

[0229] Figure 19 is a flowchart of a method for indicating that each reference signal resource in the same time slot corresponds to a different beam direction according to an exemplary embodiment, wherein step S191 is Figure 18 Step S181 in the embodiment shown is the same and will not be described again here. Figure 19 As shown, the method further includes the following steps:

[0230] In step S192 , the number of reference signal resources included in the sixth reference signal resource set is determined based on a default rule.

[0231] In the embodiments of the present disclosure, by setting the number of reference signal resources included in the sixth reference signal resource set to a default value, different reference signal resources belonging to the same sixth reference signal resource set within the same time slot can be assigned different beam directions. In this case, the first device can also determine the number of reference signal resources included in the third reference signal resource set based on the same default rule.

[0232] In the embodiment of the present disclosure, whether the beam directions corresponding to the reference signal resources included in the sixth reference signal resource set are the same may be determined by determining the repetition transmission status of the sixth reference signal resource set.

[0233] In the embodiment of the present disclosure, there are no PSSCH resources in the symbols occupied by the reference signal resources.

[0234] Figure 20 is a flowchart of a method for indicating that each reference signal resource in the same time slot corresponds to a different beam direction according to an exemplary embodiment. Figure 20 As shown, the method includes the following steps:

[0235] In step S201, the symbol positions occupied by the configured reference signal resources correspond to the PSSCH resources allocated using mini-slots as time domain scheduling units.

[0236] In step S202, different PSSCH resources at symbol positions occupied by different reference signal resources are configured to have at least the same third parameter.

[0237] In the embodiment of the present disclosure, by configuring a PSSCH resource at the symbol position occupied by each reference signal resource, the reference signal resource and the PSSCH resource are transmitted together in an FDM manner, that is, the PSSCH resource is sent with a small time slot as the time domain scheduling unit, and further configuring the different PSSCH resources at the symbol positions occupied by different reference signal resources to have at least the same third parameter, it is possible to achieve different beam directions for the reference signal resources corresponding to the PSSCH resources with the same third parameter. Among them, the small time slot is relative to the granularity of the time slot. When scheduling with the time slot as the granularity, the minimum number of occupied symbols is 3; the number of symbols occupied by the small time slot can be 1 or 2. Moreover, a time slot can contain multiple small time slot scheduling units. A small time slot can also occupy the symbols of two adjacent time slots.

[0238] In the embodiment of the present disclosure, the third parameter includes at least one of the following sequence numbers a to l:

[0239] a. The number of symbols occupied by PSSCH resources in the time slot;

[0240] b. The frequency domain resource location of the PSSCH resource in the time slot;

[0241] c. Frequency domain bandwidth of PSSCH resources in the time slot;

[0242] d. MCS of PSSCH resources;

[0243] e. DMRS pattern and number of ports of PSSCH resources;

[0244] f. New data indicator of PSSCH resources;

[0245] g. HARQ processing number of PSSCH resources;

[0246] h. Redundancy Version (RV);

[0247] i.source ID;

[0248] j.destination ID;

[0249] k.cast type;

[0250] l.CSI request.

[0251] By adopting the technical solution of the embodiment of the present invention, the beam directions corresponding to different reference signal resources in the same time slot are different, which is indicated by repeated transmission status display indication. The design of the reference signal for beam measurement is simply and efficiently implemented in the sidelink, thereby improving the performance of the sidelink based on beam transmission.

[0252] Figure 21 is a flow chart of a sidelink-based communication method according to an exemplary embodiment, wherein step S211 is Figure 12 The step S121 in the embodiment shown is the same and will not be described again here. As shown in FIG211 , the method further includes the following steps:

[0253] In step S212, the second device receives or sends fourth reference signal resource configuration information and / or fifth reference signal resource configuration information.

[0254] The second device receiving the fourth reference signal resource configuration information and / or the fifth reference signal resource configuration information includes receiving the fourth reference signal resource configuration information and / or the fifth reference signal resource configuration information from the first device and / or the network device.

[0255] Among them, the fourth reference signal resource configuration information and / or the fifth reference signal resource configuration information is used to indicate at least one of the time domain resource information, frequency domain resource information, port number and beam information of the N reference signal resources contained in the fourth reference signal resource set and / or the fifth reference signal resource set.

[0256] In the embodiments of the present disclosure, at least one of time domain resource information, frequency domain resource information, number of ports, and beam information of the N reference signal resources included in the fourth reference signal resource set may be indicated by fourth reference signal resource configuration information, and / or at least one of time domain resource information, frequency domain resource information, number of ports, and beam information of the N reference signal resources included in the fifth reference signal resource set may be indicated by fifth reference signal resource configuration information. The beam information includes whether the beams of the N reference signal resources are the same or different.

[0257] In the embodiment of the present disclosure, the reference signal includes at least one of the following: sidelink CSI-RS, S-SS / PSBCH block.

[0258] It can be understood that the technical implementations involved in the process of the second device performing sidelink-based communication in the embodiment of the present disclosure can be applied to the process of the first device performing sidelink-based communication in the embodiment of the present disclosure. Therefore, for some technical implementations of the process of the second device performing sidelink-based communication that are not described in detail, please refer to the relevant description of the implementation process of the first device performing sidelink-based communication, and no further details will be given here.

[0259] It is understood that the Sidelink-based communication method provided in the embodiments of the present disclosure is applicable to the process of implementing Sidelink-based communication during the interaction between the first device and the second device. The embodiments of the present disclosure will not further describe the process of implementing Sidelink-based communication during the interaction between the first device and the second device.

[0260] It should be noted that those skilled in the art will appreciate that the various implementation methods / embodiments involved in the embodiments of the present disclosure can be used in conjunction with the aforementioned embodiments or can be used independently. Whether used alone or in conjunction with the aforementioned embodiments, the implementation principles are similar. In the embodiments of the present disclosure, some embodiments are described in terms of implementation methods used together. Of course, those skilled in the art will appreciate that such examples are not limitations on the embodiments of the present disclosure.

[0261] Based on the same concept, an embodiment of the present disclosure also provides a sidelink-based communication device.

[0262] It is understandable that the sidelink-based communication device provided by the embodiment of the present disclosure includes hardware structures and / or software modules corresponding to the execution of each function in order to realize the above functions. In combination with the units and algorithm steps of each example disclosed in the embodiment of the present disclosure, the embodiment of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware 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 to exceed the scope of the technical solution of the embodiment of the present disclosure.

[0263] Figure 22 FIG1 is a block diagram of a sidelink-based communication device according to an exemplary embodiment. Figure 22 , the device 2200 includes a sending unit 2210.

[0264] The sending unit 2210 is configured to send multiple reference signals, each reference signal corresponding to a different reference signal resource.

[0265] Among them, multiple reference signals are used for sidelink beam measurement.

[0266] In the embodiment of the present disclosure, there are at least two reference signal resources in the reference signal resources that are located in different time slots.

[0267] In the embodiment of the present disclosure, the time slot where the reference signal resource is located also includes PSSCH resources used for sidelink communication of the first device, and the symbols occupied by the reference signal resource overlap or do not overlap with the symbols occupied by the PSSCH resources.

[0268] In the embodiment of the present disclosure, the reference signal resources include N reference signal resources, and the N reference signal resources correspond one-to-one to N time slots; each of the N time slots includes reference signal resources and PSSCH resources.

[0269] In the embodiment of the present disclosure, the PSSCH resources included in different time slots among the N time slots have at least the same first parameter.

[0270] In an embodiment of the present disclosure, the first parameter includes at least one of the following: the symbol position of the PSSCH resource in the time slot; the frequency domain resource position of the PSSCH resource in the time slot; the frequency domain bandwidth of the PSSCH resource in the time slot; the modulation and coding strategy of the PSSCH resource; the demodulation reference signal mode and port number of the PSSCH resource; the new data indication of the PSSCH resource; the automatic retransmission request process number of the PSSCH resource; the redundancy version (RV); the source identifier; the destination identifier; the transmission type; and the channel state information CSI request.

[0271] In the embodiment of the present disclosure, the reference signal resources included in different time slots in the N time slots have at least the same second parameter.

[0272] In the embodiment of the present disclosure, the second parameter includes at least one of the following: the symbol position of the reference signal resource in the time slot; the frequency domain resource position of the reference signal resource in the time slot; and the number of ports corresponding to the reference signal resource.

[0273] In the embodiment of the present disclosure, N is a default value, and the beam directions corresponding to the N reference signal resources are different.

[0274] In an embodiment of the present disclosure, a first device determines a first reference signal resource set, where the first reference signal resource set includes N reference signal resources.

[0275] In the embodiment of the present disclosure, a time slot includes at least one reference signal resource.

[0276] In the embodiment of the present disclosure, one or more reference signal resources are included in the same time slot, and the multiple reference signal resources correspond to multiple different beam directions.

[0277] In the embodiment of the present disclosure, an automatic gain adjustment symbol is included before the first symbol occupied by the reference signal resource; and / or a guard interval symbol is included after the last symbol occupied by the reference signal resource.

[0278] In the embodiment of the present disclosure, the method further includes: the first device determining a second reference signal resource set, where the second reference signal resource set includes identification information and / or quantity information of a plurality of reference signal resources.

[0279] In an embodiment of the present disclosure, multiple reference signal resources included in the same time slot correspond to one or more third reference signal resource sets, wherein different reference signal resources in the same third reference signal resource set correspond to different beam directions.

[0280] In the embodiment of the present disclosure, the number of reference signal resources included in the third reference signal resource set is a default value.

[0281] In the embodiment of the present disclosure, there are no PSSCH resources in the symbols occupied by the reference signal resources.

[0282] In the embodiment of the present disclosure, the symbol positions occupied by the reference signal resources correspond to PSSCH resources allocated using mini-slots as time domain scheduling units.

[0283] In the embodiment of the present disclosure, different PSSCH resources at symbol positions occupied by different reference signal resources have at least the same third parameter.

[0284] In an embodiment of the present disclosure, the third parameter includes at least one of the following: the number of symbols occupied by the PSSCH resources in the time slot; the frequency domain resource position of the PSSCH resources in the time slot; the frequency domain bandwidth of the PSSCH resources in the time slot; the modulation and coding strategy of the PSSCH resources; the demodulation reference signal mode and port number of the PSSCH resources; the new data indication of the PSSCH resources; the automatic retransmission request process number of the PSSCH resources; the redundancy version (RV); the source identifier; the destination identifier; the transmission type; and the channel state information CSI request.

[0285] In an embodiment of the present disclosure, the first reference signal resource set and / or the second reference signal resource set corresponds to a repeated transmission state, and the repeated transmission state includes a repeated transmission on state or an off state; in response to the repeated transmission state being on, the reference signal resources included in different time slots in the N time slots correspond to the same beam direction; in response to the repeated transmission state being off, the reference signal resources included in different time slots in the N time slots correspond to different beam directions.

[0286] In an embodiment of the present disclosure, it also includes: the first device receives or sends first reference signal resource configuration information and / or second reference signal resource configuration information, and the first reference signal resource configuration information and / or the second reference signal resource configuration information are used to indicate at least one of the time domain resource information, frequency domain resource information, port number and beam information of the N reference signal resources included in the first reference signal resource set and / or the second reference signal resource set.

[0287] In the embodiment of the present disclosure, the reference signal includes at least one of the following: sidelink CSI-RS, S-SS / PSBCH block.

[0288] Figure 23 FIG1 is a block diagram of a sidelink-based communication device according to an exemplary embodiment. Figure 23 , the device 2300 includes a receiving unit 2310.

[0289] The receiving unit 2310 is configured to receive multiple reference signals, each reference signal corresponding to a different reference signal resource.

[0290] Among them, multiple reference signals are used for sidelink beam measurement.

[0291] In the embodiment of the present disclosure, there are at least two reference signal resources in the reference signal resources that are located in different time slots.

[0292] In the embodiment of the present disclosure, the time slot where the reference signal resource is located also includes resources of a physical sidelink shared channel PSSCH used for sidelink communication of the second device, and the symbols occupied by the reference signal resource overlap or do not overlap with the symbols occupied by the PSSCH resources.

[0293] In the embodiment of the present disclosure, the reference signal resources include N reference signal resources, and the N reference signal resources correspond one-to-one to N time slots; each of the N time slots includes reference signal resources and PSSCH resources.

[0294] In the embodiment of the present disclosure, the PSSCH resources included in different time slots among the N time slots have at least the same first parameter.

[0295] In an embodiment of the present disclosure, the first parameter includes at least one of the following: the symbol position of the PSSCH resource in the time slot; the frequency domain resource position of the PSSCH resource in the time slot; the frequency domain bandwidth of the PSSCH resource in the time slot; the modulation and coding strategy of the PSSCH resource; the demodulation reference signal mode and port number of the PSSCH resource; the new data indication of the PSSCH resource; the automatic retransmission request process number of the PSSCH resource; the redundancy version (RV); the source identifier; the destination identifier; the transmission type; and the channel state information CSI request.

[0296] In the embodiment of the present disclosure, the reference signal resources included in different time slots in the N time slots have at least the same second parameter.

[0297] In the embodiment of the present disclosure, the second parameter includes at least one of the following: the symbol position of the reference signal resource in the time slot; the frequency domain resource position of the reference signal resource in the time slot; and the number of ports corresponding to the reference signal resource.

[0298] In the embodiment of the present disclosure, N is a default value, and the beam directions corresponding to the N reference signal resources are different.

[0299] In the embodiment of the present disclosure, the second device determines a fourth reference signal resource set, where the fourth reference signal resource set includes the N reference signal resources.

[0300] In the embodiment of the present disclosure, the same time slot includes at least one reference signal resource.

[0301] In the embodiment of the present disclosure, one or more reference signal resources are included in the same time slot, and the multiple reference signal resources correspond to multiple different beam directions.

[0302] In the embodiment of the present disclosure, an automatic gain adjustment symbol is included before the first symbol occupied by the reference signal resource; and / or a guard interval symbol is included after the last symbol occupied by the reference signal resource.

[0303] In the embodiment of the present disclosure, the method further includes: the second device determining a fifth reference signal resource set, where the fifth reference signal resource set includes identification information and / or quantity information of a plurality of reference signal resources.

[0304] In an embodiment of the present disclosure, multiple reference signal resources included in the same time slot correspond to one or more sixth reference signal resource sets, wherein different reference signal resources in the same sixth reference signal resource set correspond to different beam directions.

[0305] In the embodiment of the present disclosure, the number of reference signal resources included in the sixth reference signal resource set is a default value.

[0306] In the embodiment of the present disclosure, there are no PSSCH resources in the symbols occupied by the reference signal resources.

[0307] In the embodiment of the present disclosure, the symbol positions occupied by the reference signal resources correspond to PSSCH resources allocated using mini-slots as time domain scheduling units.

[0308] In the embodiment of the present disclosure, different PSSCH resources at symbol positions occupied by different reference signal resources have at least the same third parameter.

[0309] In an embodiment of the present disclosure, the third parameter includes at least one of the following: the number of symbols occupied by the PSSCH resources in the time slot; the frequency domain resource position of the PSSCH resources in the time slot; the frequency domain bandwidth of the PSSCH resources in the time slot; the modulation and coding strategy of the PSSCH resources; the demodulation reference signal mode and port number of the PSSCH resources; the new data indication of the PSSCH resources; the automatic retransmission request process number of the PSSCH resources; the redundancy version (RV); the source identifier; the destination identifier; the transmission type; and the channel state information CSI request.

[0310] In an embodiment of the present disclosure, the fourth reference signal resource set and / or the fifth reference signal resource set corresponds to a repeated transmission state, and the repeated transmission state includes a repeated transmission on state or an off state; in response to the repeated transmission state being on, the reference signal resources included in different time slots in the N time slots correspond to the same beam direction, and / or different reference signal resources included in the same time slot correspond to the same beam direction; and / or in response to the repeated transmission state being off, the reference signal resources included in different time slots in the N time slots correspond to different beam directions, and / or different reference signal resources included in the same time slot correspond to different beam directions.

[0311] In an embodiment of the present disclosure, it also includes: the second device receives or sends fourth reference signal resource configuration information and / or fifth reference signal resource configuration information, and the fourth reference signal resource configuration information and / or the fifth reference signal resource configuration information are used to indicate at least one of the time domain resource information, frequency domain resource information, port number and beam information of the N reference signal resources included in the fourth reference signal resource set and / or the fifth reference signal resource set.

[0312] In the embodiment of the present disclosure, the reference signal includes at least one of the following: a sidelink channel state information reference signal CSI-RS, and an S-SS / PSBCH block.

[0313] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0314] Figure 24 FIG1 is a block diagram of a SideLink-based communication device 8100 according to an exemplary embodiment. For example, the device 8100 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0315] 81 , the device 8100 may include one or more of the following components: a processing component 8102 , a memory 8104 , a power component 8106 , a multimedia component 8108 , an audio component 8110 , an input / output (I / O) interface 8112 , a sensor component 8114 , and a communication component 8116 .

[0316] The processing component 8102 generally controls the overall operation of the device 8100, such as operations associated with display, phone calls, data communications, camera operation, and recording operations. The processing component 8102 may include one or more processors 8120 to execute instructions to perform all or part of the steps of the above-described method. In addition, the processing component 8102 may include one or more modules to facilitate interaction between the processing component 8102 and other components. For example, the processing component 8102 may include a multimedia module to facilitate interaction between the multimedia component 8108 and the processing component 8102.

[0317] The memory 8104 is configured to store various types of data to support operations on the device 8100. Examples of such data include instructions for any application or method operating on the device 8100, contact data, phone book data, messages, pictures, videos, etc. The memory 8104 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0318] The power component 8106 provides power to the various components of the device 8100. The power component 8106 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the device 8100.

[0319] The multimedia component 8108 includes a screen that provides an output interface between the device 8100 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 8108 includes a front camera and / or a rear camera. When the device 8100 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0320] The audio component 8110 is configured to output and / or input audio signals. For example, the audio component 8110 includes a microphone (MIC), which is configured to receive external audio signals when the device 8100 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 8104 or transmitted via the communication component 8116. In some embodiments, the audio component 8110 also includes a speaker for outputting audio signals.

[0321] The I / O interface 8112 provides an interface between the processing component 8102 and peripheral interface modules, such as a keyboard, a click wheel, buttons, etc. These buttons may include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0322] The sensor assembly 8114 includes one or more sensors for providing various aspects of the status assessment of the device 8100. For example, the sensor assembly 8114 can detect the open / closed state of the device 8100, the relative positioning of components, such as the display and keypad of the device 8100. The sensor assembly 8114 can also detect changes in the position of the device 8100 or a component of the device 8100, the presence or absence of user contact with the device 8100, the orientation or acceleration / deceleration of the device 8100, and temperature changes of the device 8100. The sensor assembly 8114 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 8114 can also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 8114 can also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0323] The communication component 8116 is configured to facilitate wired or wireless communication between the device 8100 and other devices. The device 8100 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 8116 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 8116 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0324] In an exemplary embodiment, the device 8100 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to perform the above-mentioned methods.

[0325] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 8104 including instructions, and the instructions can be executed by the processor 8120 of the device 8100 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0326] Figure 251 is a block diagram of a device 1900 for sidelink-based communication according to an exemplary embodiment. For example, the device 1900 may be provided as a server. Figure 25 The apparatus 1900 includes a processing component 1922, which further includes one or more processors, and a memory resource represented by a memory 1932 for storing instructions, such as applications, that can be executed by the processing component 1922. The application stored in the memory 1932 may include one or more modules, each corresponding to a set of instructions. In addition, the processing component 1922 is configured to execute the instructions to perform the above-described method based on the sidelink communication method.

[0327] The device 1900 may also include a power supply component 1926 configured to perform power management of the device 1900, a wired or wireless network interface 1950 configured to connect the device 1900 to a network, and an input / output (I / O) interface 1958. The device 1900 may operate based on an operating system stored in the memory 1932, such as Windows Server™, MacOS X™, Unix™, Linux™, FreeBSD™, or the like.

[0328] It is further understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0329] It is further understood that the meanings of words such as "in response to" and "if" involved in this disclosure depend on the context and the actual usage scenario. For example, the word "in response to" used herein can be interpreted as "at..." or "when..." or "if".

[0330] It will be further understood that the terms "first," "second," and the like are used to describe various types of information, but such information should not be limited to these terms. These terms are used solely to distinguish information of the same type from one another and do not indicate a particular order or level of importance. In fact, the terms "first," "second," and the like are fully interchangeable. For example, first information could be referred to as second information, and similarly, second information could be referred to as first information without departing from the scope of this disclosure.

[0331] It is further understood that although operations are described in a particular order in the drawings in the embodiments of the present disclosure, this should not be construed as requiring that the operations be performed in the particular order shown or in a serial order, or that all of the operations shown be performed to obtain the desired results. In certain circumstances, multitasking and parallel processing may be advantageous.

[0332] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein.

[0333] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A communication method based on a side link, characterized in that: The method is performed by a first device, and includes: Send multiple reference signals, each reference signal corresponding to a different reference signal resource; wherein the multiple reference signals are used for sidelink beam measurement; The same time slot includes multiple reference signal resources; Determine a second reference signal resource set, where the second reference signal resource set corresponds to the multiple reference signal resources, and the second reference signal resource set corresponds to a repeated transmission state; In response to the repetition transmission state being an off state, different reference signal resources included in the same time slot correspond to different beam directions.

2. The method according to claim 1, characterized in that include: There are at least two reference signal resources in the reference signal resources that are located in different time slots.

3. The method according to claim 1 or 2, characterized in that The time slot where the reference signal resource is located also includes resources of a physical sidelink shared channel PSSCH used for sidelink communication of the first device, and the symbols occupied by the reference signal resource overlap or do not overlap with the symbols occupied by the PSSCH resources.

4. The method according to claim 3, characterized in that The number of the reference signal resources is N, N reference signal resources correspond one-to-one to N time slots, and N is a positive integer; Each of the N time slots includes a reference signal resource and a resource of the PSSCH.

5. The method according to claim 4, characterized in that The PSSCH resources included in different time slots in the N time slots have at least the same first parameter.

6. The method according to claim 5, characterized in that The first parameter includes at least one of the following: Symbol position of PSSCH resource in the time slot; The frequency domain resource location of the PSSCH resource in the time slot; The frequency domain bandwidth of the PSSCH resource in the time slot; Modulation and coding strategy of PSSCH resources; Demodulation reference signal mode and port number of PSSCH resources; New data indication for PSSCH resources; Automatic repeat request process number of PSSCH resource; Redundancy version RV; Source identification; Destination identification; Transmission type; Channel State Information CSI request.

7. The method according to claim 4, characterized in that The reference signal resources included in different time slots in the N time slots have at least the same second parameter.

8. The method according to claim 7, characterized in that The second parameter includes at least one of the following: Symbol position of the reference signal resource in the time slot; The frequency domain resource location of the reference signal resource in the time slot; The port number corresponding to the reference signal resource.

9. The method according to any one of claims 5 to 8, characterized in that The N is a default value, and the beam directions corresponding to the N reference signal resources are different.

10. The method according to claim 4, characterized in that The first device determines a first reference signal resource set, where the first reference signal resource set includes the N reference signal resources.

11. The method according to claim 1, wherein The same time slot contains at least one reference signal resource.

12. The method according to claim 1, characterized in that The first symbol occupied by the reference signal resource includes an automatic gain adjustment symbol; and / or The last symbol occupied by the reference signal resource includes a guard interval symbol.

13. The method according to claim 1, wherein The second reference signal resource set includes identification information and / or quantity information of the multiple reference signal resources.

14. The method according to any one of claims 11 to 13, characterized in that The multiple reference signal resources included in the same time slot correspond to one or more third reference signal resource sets, wherein different reference signal resources in the same third reference signal resource set correspond to different beam directions.

15. The method according to claim 14, characterized in that The number of reference signal resources included in the third reference signal resource set is a default value.

16. The method according to claim 11, characterized in that There is no PSSCH resource in the symbols occupied by the reference signal resources.

17. The method according to claim 11, characterized in that The symbol positions occupied by the reference signal resources correspond to PSSCH resources allocated using mini-slots as time domain scheduling units.

18. The method according to claim 17, characterized in that Different PSSCH resources at symbol positions occupied by different reference signal resources have at least the same third parameter.

19. The method according to claim 18, characterized in that The third parameter includes at least one of the following: The number of symbols occupied by the PSSCH resource in the time slot; The frequency domain resource location of the PSSCH resource in the time slot; The frequency domain bandwidth of the PSSCH resource in the time slot; Modulation and coding strategy of PSSCH resources; Demodulation reference signal mode and port number of PSSCH resources; New data indication for PSSCH resources; Automatic repeat request process number of PSSCH resource; Redundant version; Source identification; Destination identification; Transmission type; Channel State Information CSI request.

20. The method according to claim 10 or 13, characterized in that The first reference signal resource set and / or the second reference signal resource set corresponds to a repeated transmission state, where the repeated transmission state includes a repeated transmission on state or a closed state; In response to the repeated transmission state being the on state, the reference signal resources included in different time slots in the N time slots correspond to the same beam direction, and / or different reference signal resources included in the same time slot correspond to the same beam direction; and / or In response to the repetitive transmission state being an off state, reference signal resources included in different time slots in the N time slots correspond to different beam directions.

21. The method according to claim 10 or 13, characterized in that The method further comprises: The first device receives or sends first reference signal resource configuration information and / or second reference signal resource configuration information, where the first reference signal resource configuration information and / or the second reference signal resource configuration information are used to indicate at least one of the time domain resource information, frequency domain resource information, number of ports and beam information of the N reference signal resources contained in the first reference signal resource set and / or the second reference signal resource set.

22. The method according to claim 1, wherein The reference signal includes at least one of the following: Sidelink channel state information reference signal CSI-RS, sidelink synchronization signal and physical sidelink broadcast channel transport block S-SS / PSBCH block.

23. A communication method based on a side link, characterized in that: The method is performed by a second device, and includes: receiving a plurality of reference signals, each reference signal corresponding to a different reference signal resource; wherein the multiple reference signals are used for sidelink beam measurement; The same time slot includes multiple reference signal resources; determining a fifth reference signal resource set, where the fifth reference signal resource set corresponds to the multiple reference signal resources, and the fifth reference signal resource set corresponds to a repeated transmission state; In response to the repetition transmission state being an off state, different reference signal resources included in the same time slot correspond to different beam directions.

24. The method according to claim 23, wherein include: There are at least two reference signal resources in the reference signal resources that are located in different time slots.

25. The method according to claim 23 or 24, characterized in that The time slot where the reference signal resource is located also includes resources of a PSSCH used for sidelink communication, and the symbols occupied by the reference signal resource overlap or do not overlap with the symbols occupied by the PSSCH resources.

26. The method according to claim 25, characterized in that The reference signal resources include N reference signal resources, the N reference signal resources correspond one-to-one to N time slots, and N is a positive integer; Each of the N time slots includes a reference signal resource and a resource of the PSSCH.

27. The method according to claim 26, characterized in that The PSSCH resources included in different time slots in the N time slots have at least the same first parameter.

28. The method according to claim 27, characterized in that The first parameter includes at least one of the following: Symbol position of PSSCH resource in the time slot; The frequency domain resource location of the PSSCH resource in the time slot; The frequency domain bandwidth of the PSSCH resource in the time slot; Modulation and coding strategy of PSSCH resources; Demodulation reference signal mode and port number of PSSCH resources; New data indication for PSSCH resources; Automatic repeat request process number of PSSCH resource; Redundancy version RV; Source identification; Destination identification; Transmission type; Channel State Information CSI request.

29. The method according to claim 26, wherein The reference signal resources included in different time slots in the N time slots have at least the same second parameter.

30. The method according to claim 29, wherein The second parameter includes at least one of the following: Symbol position of the reference signal resource in the time slot; The frequency domain resource location of the reference signal resource in the time slot; The port number corresponding to the reference signal resource.

31. The method according to any one of claims 26 to 30, characterized in that The N is a default value, and the beam directions corresponding to the N reference signal resources are different.

32. The method according to claim 26, wherein The second device determines a fourth reference signal resource set, where the fourth reference signal resource set includes the N reference signal resources.

33. The method according to claim 23, wherein The same time slot contains at least one reference signal resource.

34. The method according to claim 23, wherein The first symbol occupied by the reference signal resource includes an automatic gain adjustment symbol; and / or The last symbol occupied by the reference signal resource includes a guard interval symbol.

35. The method according to claim 33, wherein The fifth reference signal resource set includes identification information and / or quantity information of the multiple reference signal resources.

36. The method according to claim 33, wherein The multiple reference signal resources included in the same time slot correspond to one or more sixth reference signal resource sets, wherein different reference signal resources in the same sixth reference signal resource set correspond to different beam directions.

37. The method according to claim 36, wherein The number of reference signal resources included in the sixth reference signal resource set is a default value.

38. The method according to claim 33, wherein There is no PSSCH resource in the symbols occupied by the reference signal resources.

39. The method according to claim 33, wherein The symbol positions occupied by the reference signal resources correspond to PSSCH resources allocated using mini-slots as time domain scheduling units.

40. The method according to claim 39, wherein Different PSSCH resources at symbol positions occupied by different reference signal resources have at least the same third parameter.

41. The method according to claim 40, wherein The third parameter includes at least one of the following: The number of symbols occupied by the PSSCH resource in the time slot; The frequency domain resource location of the PSSCH resource in the time slot; The frequency domain bandwidth of the PSSCH resource in the time slot; Modulation and coding strategy of PSSCH resources; Demodulation reference signal mode and port number of PSSCH resources; New data indication for PSSCH resources; Automatic repeat request process number of PSSCH resource; Redundant version; Source identification; Destination identification; Transmission type; Channel State Information CSI request.

42. The method according to claim 32 or 35, characterized in that The fourth reference signal resource set and / or the fifth reference signal resource set corresponds to a repeated transmission state, where the repeated transmission state includes a repeated transmission on state or a closed state; In response to the repeated transmission state being the on state, the reference signal resources included in different time slots in the N time slots correspond to the same beam direction, and / or different reference signal resources included in the same time slot correspond to the same beam direction; and / or In response to the repetitive transmission state being the off-on state, reference signal resources included in different time slots in the N time slots correspond to different beam directions.

43. The method according to claim 32 or 37, characterized in that The method further comprises: The second device receives or sends fourth reference signal resource configuration information and / or fifth reference signal resource configuration information, where the fourth reference signal resource configuration information and / or fifth reference signal resource configuration information are used to indicate at least one of the time domain resource information, frequency domain resource information, number of ports and beam information of the N reference signal resources included in the fourth reference signal resource set and / or the fifth reference signal resource set.

44. The method according to claim 23, wherein The reference signal includes at least one of the following: Sidelink channel state information reference signal CSI-RS, sidelink synchronization signal and physical sidelink broadcast channel transport block S-SS / PSBCH block.

45. A communication device based on a side link, characterized in that: include: a sending unit configured to send a plurality of reference signals, each reference signal corresponding to a different reference signal resource; wherein the multiple reference signals are used for sidelink beam measurement; The same time slot includes multiple reference signal resources; Determine a second reference signal resource set, where the second reference signal resource set corresponds to the multiple reference signal resources, and the second reference signal resource set corresponds to a repeated transmission state; In response to the repetition transmission state being an off state, different reference signal resources included in the same time slot correspond to different beam directions.

46. ​​A communication device based on a side link, characterized in that include: a receiving unit configured to receive a plurality of reference signals, each reference signal corresponding to a different reference signal resource; wherein the multiple reference signals are used for sidelink beam measurement; The same time slot includes multiple reference signal resources; determining a fifth reference signal resource set, where the fifth reference signal resource set corresponds to the multiple reference signal resources, and the fifth reference signal resource set corresponds to a repeated transmission state; In response to the repetition transmission state being an off state, different reference signal resources included in the same time slot correspond to different beam directions.

47. A communication device based on a side link, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to execute the method according to any one of claims 1 to 22.

48. A communication device based on a side link, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to execute the method according to any one of claims 23 to 44.

49. A non-transitory computer-readable storage medium, which, when instructions in the storage medium are executed by a processor of a first device, enables the first device to perform the method according to any one of claims 1 to 22.

50. A non-transitory computer-readable storage medium, which, when instructions in the storage medium are executed by a processor of a second device, enables the second device to perform the method according to any one of claims 23 to 44.

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