WO2022027426A1

WO2022027426A1 - Resource reporting method and apparatus and resource selection method and apparatus

Info

Publication number: WO2022027426A1
Application number: PCT/CN2020/107378
Authority: WO
Inventors: 张健; 纪鹏宇; 王昕�
Original assignee: 富士通株式会社; 张健; 纪鹏宇; 王昕�
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2022-02-10

Abstract

Provided are a resource reporting method and apparatus and a resource selection method and apparatus. The resource reporting method comprises: a first terminal device determining M sidelink resources to be reported to a second terminal device; the first terminal device selecting N sidelink resources from among the M sidelink resources, so as to generate auxiliary information, wherein N and M are both positive integers, and N is less than M; and the first terminal device sending the auxiliary information to the second terminal device.

Description

Resource reporting and resource selection method and device

technical field

The embodiments of the present application relate to the field of communication technologies.

Background technique

V2X (Vehicle to Everything) is a vehicle communication technology. Compared with the cellular communication using the Uu link, the transmitting device of V2X communicates directly with the receiving device through a sidelink. New Radio (NR, New Radio) V2X is an important project of 5G Rel-16. Compared with Long Term Evolution (LTE, Long Term Evolution) V2X of Rel-14/Rel-15, NR V2X can support more scenarios and services. Can meet higher performance requirements.

The physical channels defined by NR V2X include Physical Sidelink Control Channel (PSCCH, Physical Sidelink Control Channel), Physical Sidelink Shared Channel (PSSCH, Physical Sidelink Shared Channel) and Physical Sidelink Feedback Channel (PSFCH, Physical Sidelink Feedback Channel) ).

PSCCH carries first-level side link control information (1st stage SCI, Sidelink Control Informaiton), and 1st stage SCI is mainly used to reserve resources (resources in this paper include time domain resources and/or frequency domain resources). PSSCH carries the 2nd stage SCI (2nd stage SCI) and the transport block (TB, Transport Block), where the 2nd stage SCI is mainly used for TB demodulation. PSFCH carries side link feedback information (called HARQ-ACK). The resources used for side link transmission are located in a certain resource pool.

NR V2X defines two working modes. For NR V2X Mode 1 (Mode 1), the resources used by the device for V2X communication are scheduled or configured by the network device (such as the base station) through the NR Uu link. For NR V2X Mode 2 (Mode 2), devices can autonomously select resources for V2X communication based on perception results.

It should be noted that the above description of the technical background is only for the convenience of clearly and completely describing the technical solutions of the present application and facilitating the understanding of those skilled in the art. It should not be assumed that the above-mentioned technical solutions are known to those skilled in the art simply because these solutions are described in the background section of this application.

SUMMARY OF THE INVENTION

On the basis of Mode 2, inter-UE coordination can be introduced, which can additionally provide devices with information that cannot be obtained by relying on their own perception, thereby further avoiding collision problems and half-duplex problems. Therefore, as an enhancement to Mode 2 of autonomous resource selection, inter-device collaboration has also become one of the research contents of Rel-17 V2X. Inter-device collaboration requires interaction information between devices, which is called assistance information. Auxiliary information can be used to optimize resource selection.

However, the inventor found that if the auxiliary information needs to carry too many resources, the code rate of the auxiliary information will be too high, so that the auxiliary information cannot be correctly demodulated and decoded. If the auxiliary information cannot be transmitted reliably and efficiently, the inter-device cooperation will not bring gains, but will degrade system performance due to the introduction of additional overhead and collisions.

For at least one of the above problems, embodiments of the present application provide a resource reporting and resource selection method and apparatus.

According to an aspect of the embodiments of the present application, a resource reporting method is provided, including:

The first terminal device determines M side link resources for reporting to the second terminal device;

the first terminal device selects N side link resources from the M side link resources to generate auxiliary information; wherein N and M are both positive integers and N is less than M; and

The first terminal device sends the auxiliary information to the second terminal device.

According to another aspect of the embodiments of the present application, a resource reporting device is provided, including:

a determining unit, which determines M side link resources for reporting to the second terminal device;

a selection unit that selects N side link resources from the M side link resources to generate auxiliary information; wherein N and M are both positive integers and N is less than M; and

a sending unit, which sends the auxiliary information to the second terminal device.

According to another aspect of the embodiments of the present application, a resource selection method is provided, including:

The second terminal device receives the auxiliary information sent by the first terminal device, and the auxiliary information is generated by the first terminal device selecting N side link resources from M side link resources; wherein N and M are both positive an integer and N is less than M; and

The second terminal device performs sidelink resource selection according to the auxiliary information.

According to another aspect of the embodiments of the present application, a resource selection apparatus is provided, including:

a receiving unit, which receives the auxiliary information sent by the first terminal device, the auxiliary information is generated by the first terminal device selecting N side link resources from M side link resources; wherein N and M are both positive an integer and N is less than M; and

a selection unit, which selects side link resources according to the auxiliary information.

One of the beneficial effects of the embodiments of the present application is that: the first terminal device selects N side link resources from the M side link resources to generate auxiliary information; and sends the auxiliary information to the second terminal device. Therefore, the number of resources to be carried by the auxiliary information is limited within a certain range, and the code rate of the auxiliary information will not be too high, thereby ensuring that the auxiliary information can be correctly demodulated and decoded.

With reference to the following description and drawings, specific embodiments of the present application are disclosed in detail, indicating the manner in which the principles of the present application may be employed. It should be understood that the embodiments of the present application are not thereby limited in scope. Embodiments of the present application include many changes, modifications and equivalents within the spirit and scope of the appended claims.

Features described and/or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, in combination with, or instead of features in other embodiments .

It should be emphasized that the term "comprising/comprising" when used herein refers to the presence of a feature, integer, step or component, but does not exclude the presence or addition of one or more other features, integers, steps or components.

Description of drawings

Elements and features described in one figure or embodiment of the present application may be combined with elements and features shown in one or more other figures or embodiments. Furthermore, in the figures, like reference numerals refer to corresponding parts throughout the several figures, and may be used to designate corresponding parts that are used in more than one embodiment.

1 is a schematic diagram of a communication system according to an embodiment of the present application;

FIG. 2 is an example diagram of a collision problem in an embodiment of the present application;

FIG. 3 is an example diagram of a half-duplex problem in an embodiment of the present application;

4 is a schematic diagram of a resource reporting method according to an embodiment of the present application;

FIG. 5 is an example diagram of sending resources according to an embodiment of the present application;

FIG. 6 is an exemplary diagram of a receiving resource according to an embodiment of the present application;

FIG. 7 is an example diagram of interference resources according to an embodiment of the present application;

FIG. 8 is an example diagram of selecting resources according to an embodiment of the present application;

FIG. 9 is another example diagram of selecting resources according to an embodiment of the present application;

FIG. 10 is another example diagram of selecting resources according to an embodiment of the present application;

FIG. 11 is another example diagram of selecting resources according to an embodiment of the present application;

FIG. 12 is another example diagram of selecting resources according to an embodiment of the present application;

FIG. 13 is another example diagram of selecting resources according to an embodiment of the present application;

FIG. 14 is another example diagram of selecting resources according to an embodiment of the present application;

15 is a schematic diagram of a resource selection method according to an embodiment of the present application;

16 is a schematic diagram of a resource reporting device according to an embodiment of the present application;

17 is a schematic diagram of a resource selection apparatus according to an embodiment of the present application;

18 is a schematic diagram of a network device according to an embodiment of the present application;

FIG. 19 is a schematic diagram of a terminal device according to an embodiment of the present application.

detailed description

The foregoing and other features of the present application will become apparent from the following description with reference to the accompanying drawings. In the specification and drawings, specific embodiments of the present application are specifically disclosed, which are indicative of some embodiments in which the principles of the present application may be employed, it being understood that the present application is not limited to the described embodiments, on the contrary, the present The application includes all modifications, variations and equivalents falling within the scope of the appended claims.

In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements in terms of appellation, but do not indicate the spatial arrangement or temporal order of these elements, and these elements should not be referred to by these terms restricted. The term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "comprising", "including", "having", etc. refer to the presence of stated features, elements, elements or components, but do not preclude the presence or addition of one or more other features, elements, elements or components.

In the embodiments of the present application, the singular forms "a", "the", etc. include the plural forms, and should be broadly understood as "a" or "a class" rather than being limited to the meaning of "an"; in addition, the term "the" "" is understood to include both the singular and the plural, unless the context clearly dictates otherwise. In addition, the term "based on" should be understood as "at least in part based on..." and the term "based on" should be understood as "based at least in part on..." unless the context clearly dictates otherwise.

In the embodiments of the present application, the term "communication network" or "wireless communication network" may refer to a network that conforms to any of the following communication standards, such as Long Term Evolution (LTE), Long Term Evolution Enhanced (LTE-A, LTE-Advanced), broadband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed Packet Access (HSPA, High-Speed Packet Access), etc.

Moreover, the communication between devices in the communication system can be carried out according to communication protocols at any stage, for example, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G , New Radio (NR, New Radio), etc., and/or other communication protocols currently known or to be developed in the future.

In this embodiment of the present application, the term "network device" refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device. Network devices may include but are not limited to the following devices: base station (BS, Base Station), access point (AP, Access Point), transmission and reception point (TRP, Transmission Reception Point), broadcast transmitter, mobility management entity (MME, Mobile Management Entity), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller) and so on.

The base station may include but is not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), and 5G base station (gNB), etc., and may also include a remote radio head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay (relay) or low power node (eg femeto, pico, etc.). And the term "base station" may include some or all of their functions, each base station may provide communication coverage for a particular geographic area. The term "cell" may refer to a base station and/or its coverage area, depending on the context in which the term is used.

In the embodiments of this application, the term "User Equipment" (UE, User Equipment) or "Terminal Equipment" (TE, Terminal Equipment or Terminal Device), for example, refers to a device that accesses a communication network through a network device and receives network services. A terminal device may be fixed or mobile, and may also be referred to as a mobile station (MS, Mobile Station), a terminal, a subscriber station (SS, Subscriber Station), an access terminal (AT, Access Terminal), a station, and the like.

Wherein, the terminal device may include but is not limited to the following devices: Cellular Phone (Cellular Phone), Personal Digital Assistant (PDA, Personal Digital Assistant), wireless modem, wireless communication device, handheld device, machine type communication device, laptop computer, Cordless phones, smartphones, smart watches, digital cameras, and more.

For another example, in scenarios such as the Internet of Things (IoT, Internet of Things), the terminal device may also be a machine or device that performs monitoring or measurement, such as but not limited to: Machine Type Communication (MTC, Machine Type Communication) terminals, In-vehicle communication terminals, device-to-device (D2D, Device to Device) terminals, machine-to-machine (M2M, Machine to Machine) terminals, etc.

In addition, the term "network side" or "network device side" refers to one side of the network, which may be a certain base station, and may also include one or more network devices as described above. The term "user side" or "terminal side" or "terminal device side" refers to the side of a user or terminal, which may be a certain UE, or may include one or more terminal devices as above. Unless otherwise specified in this document, "equipment" may refer to network equipment or terminal equipment.

The following describes the scenarios of the embodiments of the present application by using examples, but the present application is not limited thereto.

FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application, which schematically illustrates the case of a terminal device and a network device as an example. As shown in FIG. 1 , a communication system 100 may include a network device 101 and

terminal devices

102 and 103 . For simplicity, FIG. 1 only takes two terminal devices and one network device as an example for description, but the embodiment of the present application is not limited to this.

In this embodiment of the present application, existing services or services that can be implemented in the future may be sent between the network device 101 and the

terminal devices

102 and 103 . For example, these services may include, but are not limited to: Enhanced Mobile Broadband (eMBB, enhanced Mobile Broadband), Massive Machine Type Communication (mMTC, massive Machine Type Communication), and Ultra-Reliable and Low Latency Communication (URLLC, Ultra-Reliable and Low). -Latency Communication), etc.

It is worth noting that FIG. 1 shows that both

terminal devices

102 and 103 are within the coverage of the network device 101, but the present application is not limited to this. Both

terminal devices

102 , 103 may not be within the coverage of the network device 101 , or one terminal device 102 may be within the coverage of the network device 101 and the other end device 103 may be outside the coverage of the network device 101 .

In this embodiment of the present application, side link transmission may be performed between the two

terminal devices

102 and 103 . For example, the two

terminal devices

102 and 103 can both perform side link transmission within the coverage of the network device 101 to implement V2X communication, or both can perform side link transmission outside the coverage of the network device 101 to implement V2X For communication, it is also possible that one terminal device 102 is within the coverage of the network device 101 and another terminal device 103 is outside the coverage of the network device 101 to perform side link transmission to implement V2X communication.

In this embodiment of the present application, the terminal devices 102 and/or 103 can autonomously select side link resources (ie, adopt Mode 2), and in this case, the side link transmission can be independent of the network device 101, that is, the network device 101 is optional of. Of course, the embodiment of the present application may also combine the autonomous selection of side link resources (that is, using Mode 2) and the allocation of side link resources by the network device (that is, using Mode 1); the embodiment of the present application does not limit this.

For the autonomous resource selection mode (Mode 2) of Rel-16 NR V2X, the device selects and transmits resources based on its own sensing results, which can avoid interference or collision between devices to a certain extent. But in some cases, there are still collision problems.

FIG. 2 is an example diagram of a collision problem in an embodiment of the present application. For example, as shown in Figure 2, device A (UE 1) and device B (UE 2) need to send periodic services with the same period, because the devices independently select resources, or because they are outside each other's perception range, autonomous Resource selection may cause two devices to always transmit on overlapping resources (i.e., collision problems), and each is a strong interference to each other, which will cause the devices to fail to transmit continuously (continuous packet loss).

Due to half-duplex limitations (ie, devices cannot receive when sending, and cannot send when receiving), devices cannot discover each other, and the collision problem may not be resolved for a long time. In addition, Mode 2 is not designed to solve the half-duplex problem.

FIG. 3 is an example diagram of a half-duplex problem in an embodiment of the present application. For example, as shown in Figure 3, it is assumed that device A (UE 1) needs to receive periodic services sent by device B (UE 2), and device A itself also needs to send periodic services with the same period. Selection, autonomous resource selection may result in the following: while device B is transmitting, device A is also transmitting. Due to the half-duplex limitation, device A will continue to be unable to receive the data sent by device B (continuous packet loss), and the devices cannot find each other, so the half-duplex problem may not be resolved for a long time.

For simplicity, the above problems are collectively referred to as a collision problem or a half-duplex problem between device A and device B. Device-independent resource selection is one reason Mode 2 has collision problems and half-duplex problems. Based on Mode 2, the introduction of inter-UE coordination (inter-UE coordination) can additionally provide devices with information that cannot be obtained by relying on their own perception, thereby further avoiding collision problems and half-duplex problems.

Therefore, as an enhancement to Mode 2 of autonomous resource selection, inter-device collaboration has also become one of the research contents of Rel-17 V2X. Inter-device collaboration requires information exchanged between devices, called auxiliary information. Auxiliary information can be used to optimize resource selection. According to the project establishment document (WID, work item description) of Rel-17 V2X, auxiliary information can at least indicate (or include) resource information, that is, indicate a resource set. For example, the auxiliary information may indicate deprecated (or recommended) resources obtained by the device based on perception, resources occupied by the device itself, and the like.

For example, the auxiliary information indicates the resources used by device A for sending. After receiving the auxiliary information, device B can avoid the resources occupied by device A during resource selection, so as to avoid the collision problem or half-duplex problem mentioned above. problem. At present, the standardization of Rel-17 V2X has not yet started, and the specific methods of cooperation between devices, including the content indicated by the auxiliary information, are all issues to be studied and solved.

The gain of inter-device cooperation comes from the interaction of auxiliary information. Auxiliary information itself is also a signaling overhead, and the transmission of auxiliary information may also collide with resources. In order to reduce the overhead and collision caused by sending auxiliary information, the size of resources used for sending auxiliary information should be limited to a certain range.

However, the number of resources that meet the reporting conditions on the device side may be very large, that is, the number of resources that the auxiliary information needs to be carried is too many, which will cause the code rate of the auxiliary information to be too high, so that it cannot be correctly demodulated and decoded. If the auxiliary information cannot be transmitted reliably and efficiently, the inter-device cooperation will not bring any gain, but will degrade the system performance by introducing additional overhead and collisions.

For at least one of the above technical problems, the embodiments of the present application provide corresponding solutions.

In the embodiment of the present application, "V2X" is used as an example to describe the side link, but the present application is not limited to this, and can also be applied to side link scenarios other than "V2X". In the following description, the terms "side link" and "V2X" are interchangeable, the terms "PSFCH" and "side link feedback channel" are interchangeable, and the terms "PSCCH" and " "Sidelink Control Channel" or "Sidelink Control Information" are interchangeable, as are the terms "PSSCH" and "Sidelink Data Channel" or "Sidelink Data".

In addition, transmitting or receiving PSCCH can be understood as sending or receiving side link control information carried by PSCCH; sending or receiving PSSCH can be understood as sending or receiving side link data carried by PSSCH; sending or receiving PSFCH can be understood as sending or receiving side link feedback information carried by PSFCH. Sidelink transmission (Sidelink transmission, also known as sidelink transmission) can be understood as PSSCH/PSCCH transmission or sidelink data/information transmission.

Embodiments of the first aspect

This embodiment of the present application provides a resource reporting method, which is described from the first terminal device. The first terminal device may send auxiliary information to the second terminal device. The auxiliary information in this embodiment of the application may include information related to resources (resource information or resource set), and may also include an indication of reference signal received power (RSRP, Reference Signal Receiving Power), a received signal strength indication (RSSI, Received Signal Strength). Indicator), priority (priority), business cycle and other information.

For example, the auxiliary information may indicate time-frequency location information of resources and information such as reference signal received power, received signal strength indication, priority, and service period corresponding to each resource, but the present application is not limited thereto. Since both resource information and auxiliary information are generated based on N side link resources, in this application, "device sends or reports resource information" can be equivalent to "device sends or reports auxiliary information" without causing confusion , the terms "auxiliary information" and "resource information" or "resource collection" are interchangeable.

FIG. 4 is a schematic diagram of a resource reporting method according to an embodiment of the present application. As shown in FIG. 4 , the method includes:

401. The first terminal device determines M side link resources for reporting to the second terminal device;

402, the first terminal device selects N side link resources from the M side link resources to generate auxiliary information; wherein N and M are both positive integers and N is less than M; and

403. The first terminal device sends the auxiliary information to the second terminal device.

It should be noted that the above FIG. 4 only schematically illustrates the embodiment of the present application, but the present application is not limited thereto. For example, the execution order of the various operations can be adjusted appropriately, and other operations can be added or some of the operations can be reduced. Those skilled in the art can make appropriate modifications according to the above content, and are not limited to the description of the above-mentioned FIG. 4 .

In some embodiments, the M side link resources include at least one of the following: a sending resource used by the first terminal device for sending side link information, and a receiving resource perceived by the first terminal device and used for receiving side link information , the interference resource perceived by the first terminal device. The "side link information" herein may include side link data, side link control information, side link feedback information, etc., and the present application does not limit the specific content of the side link information.

For example, the first terminal device may perform resource selection/reselection to obtain transmission resources, and may also perform monitoring or sensing to obtain reception resources and/or interference resources. For details on how to determine the M side link resources, reference may be made to the related art, and the description is omitted here.

In some embodiments, the first terminal device may randomly select N side link resources from M side link resources, or may also select N side link resources from M side link resources according to priorities resource.

For example, when the device needs to select N resources (N<M) from M resources for reporting, the device randomly selects N resources. For another example, the auxiliary information is generated based on the resource priority ordering, and the problem that the auxiliary information bit rate is too high can be avoided by discarding low-priority resources.

In some embodiments, the priority is determined according to at least one of the following information: the priority indicated by the side link control information (SCI) corresponding to the side link resource, the signal strength (RSRP/ RSSI), the type of side link resources, and the trigger conditions corresponding to the side link resources; but the present application is not limited to this. For the specific content of the priority sorting, reference may be made to the embodiments of the second aspect to the seventh aspect described later.

In this embodiment of the present application, for the auxiliary information sent by a device, the size of the resources occupied by the auxiliary information should be controlled within a reasonable range. If the resources occupied by the auxiliary information are relatively large, the transmission of the auxiliary information is likely to collide with the transmission of other devices, thereby affecting the transmission reliability of the auxiliary information. Therefore, the size of the resources occupied by the auxiliary information should be limited to a small range.

For the auxiliary information sent by a device, the number of resources that the auxiliary information can bear is limited. In other words, the number of resources reported by the device by sending auxiliary information is limited. This is because the indication of each resource and/or resource-related information requires several bits of overhead, and the more the number of resources, the greater the overhead; limited by the size of the resources occupied by the auxiliary information, the large overhead will cause the auxiliary information The bit rate is too high, thus affecting the reliability of auxiliary information transmission.

For a certain device, the number of resources that meet the reporting conditions may exceed the number of resources that can be carried by the auxiliary information. When the number of resources that meet the reporting conditions exceeds the number of resources that can be carried by the auxiliary information, the device selects a part of the resources for reporting.

In some embodiments, it is assumed that the device can report M resources when the number of resources is not limited. When the number of resources is limited, the device needs to select N resources (N<M) from M resources for reporting. More specifically, for example, the device selects N resources with the highest resource priority for reporting, where the resource priority is determined based on at least one of the following parameters: priority indicated by SCI, RSRP/RSSI, resource type, and trigger condition.

When the device needs to select N resources (N<M) from M resources for reporting, there is no restriction on how to determine the value of N. For example, a code rate threshold R _max may be defined, where N is the maximum number of resources that can satisfy the code rate less than or equal to (or less than) R _max . For another example, a threshold value C _max of the number of resources may be defined, and N is the maximum number of resources that can satisfy that the number of resources is less than or equal to (or less than) C _max . For another example, a threshold value B _max of the number of reported bits may be defined, and N is the maximum number of resources that can satisfy that the number of reported bits is less than or equal to (or less than) B _max . For another example, the value of N may be directly configured by the base station or the device to the terminal device.

In some embodiments, R _max , C _max , B _max , N may be determined in at least one of the following ways: pre-configured; configured by a base station, eg, through a System Information Block (SIB, System Information Block) broadcast message and/or wireless Resource Control (RRC, Radio Resource Control) signaling configuration; configured by another device, for example, configured through PC5-RRC signaling and/or indicated through SCI. R _max , C _max , B _max , N can be configured independently for each resource pool.

It is worth noting that "selecting resources" in Mode 2 has a different meaning from "selecting resources" in the auxiliary information generation process in this article. The former refers to the resources selected for sending PSCCH/PSSCH (for example, as described in the ninth performed by the second terminal device in the embodiments of the aspect), the latter refers to selecting resources that can be carried in the auxiliary information (for example, as described later by the first terminal device in the embodiments of the first to eighth aspects). implemented).

In some embodiments, the terminal device selects a certain resource to report, which means that the device reports information associated with the resource, including reporting the time-frequency location information of the resource, and may also include reporting other information related to the resource. , for example, the priority indicated by the SCI of the resource, the RSRP of the resource, the source ID (source ID), the destination ID (destination ID) associated with the resource, etc., are not listed one by one. Selecting a resource for reporting can refer to reporting any one or more than one information associated with the resource.

The above embodiments merely illustrate the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications can also be made on the basis of the above embodiments. For example, each of the above-described embodiments may be used alone, or one or more of the above-described embodiments may be combined.

It can be known from the above embodiments that the first terminal device selects N sidelink resources from the M sidelink resources to generate auxiliary information; and sends the auxiliary information to the second terminal device. Therefore, the number of resources to be carried by the auxiliary information is limited within a certain range, and the code rate of the auxiliary information will not be too high, thereby ensuring that the auxiliary information can be correctly demodulated and decoded.

Embodiments of the Second Aspect

The embodiments of the present application provide supplementary descriptions on the basis of the embodiments of the first aspect, and the same content as the embodiments of the first aspect will not be repeated. In the embodiment of the second aspect, the first terminal device selects N side link resources with the highest priority from the M side link resources in order of priority from high to low. The side link resources included in the auxiliary information are resources that the first terminal device does not recommend to be used by the second terminal device.

In the embodiment of the second aspect, the types of the side link resources include at least one of the following: the first type of resources is transmission resources, the second type of resources is reception resources, and the third type of resources is interference resources; The priority is greater than the priority of the second type of resource, and the priority of the second type of resource is greater than the priority of the third type of resource.

In the embodiments of the present application, if there is no specific reference to a resource, the "resource" described herein generally refers to one or more than one resource. For a certain resource, the priority and RSRP indicated by the corresponding SCI can be obtained based on related technologies.

For example, for a resource reserved by PSCCH/PSSCH: the priority indicated by the SCI of the resource comes from the priority value indicated by the priority field in PSCCH (1st stage SCI). The higher the priority; the RSRP of the resource can be obtained by measurement based on the demodulation reference signal (DM-RS, DeModulation Reference Signal) of the PSCCH reserved for the resource, or based on the DM-RS of the PSSCH reserved for the resource. The RSRP threshold can be a function of sending priority and receiving priority; sending priority is the priority indicated by the SCI sent by the device, and receiving priority is the priority indicated by the SCI (PSCCH) received by the device.

In some embodiments, it is assumed that device A reports auxiliary information to device B. The auxiliary information includes a set of resources, the resources in the set are the resources that device A recommends device B to avoid. In other words, device B does not select the resource indicated by the auxiliary information when performing autonomous resource selection.

Device A may have PSCCH/PSSCH (referred to as side link information) that needs to be sent. Device A notifies device B of the resources it needs to send. Then device B can avoid the transmission of device A when sending the side link. The resources used to avoid collision problems or half-duplex problems between device B and device A.

For example, device B's transmission may avoid using overlapping resources with device A's transmission, thereby avoiding interference between device B and device A. For another example, if device B has side link information that needs to be sent to device A, then device B can avoid using the same time slot as device A's transmission, so as to avoid device A being unable to receive information from device B due to half-duplex restrictions. Edge link information. The resources used by device A for transmission may be referred to as transmission resources.

FIG. 5 is an example diagram of sending resources according to an embodiment of the present application. As shown in FIG. 5 , UE A reports auxiliary information to UE B. UE A sends side link information to UE C, and the resources used by UE A for side link transmission are called transmission resources.

Device A can know which resources have been reserved by other devices based on perception. Due to the limitation of the sensing range or the half-duplex limitation, the device B may not be able to perceive the resource reservation of the device A. Therefore, the reporting of the sensing result by device A helps device B to select better resources. The ^1st stage SCI indicates the reserved resources, and device A can know the reserved resources after correctly demodulating the 1st stage SCI.

Device A then demodulates the 2nd stage SCI. When the 2nd stage SCI can be demodulated correctly, device A can obtain the source ID (source ID) and destination ID (destination ID) carried by the 2nd stage SCI. Through the destination ID, device A can know whether the resources reserved by the SCI are It is used to transmit side link information sent to itself, that is, to know whether the reserved resources are receiving resources or interfering resources.

For receiving a resource, device A needs to receive sidelink information on the resource. Device A reports the receiving resource to device B, and after the sending of device B avoids the receiving resource, interference to the receiving of device A can be avoided. For the interference resource, device A knows that there are other devices transmitting on the resource, that is, there is interference. Device A reports the interference resource to device B, and after the transmission of device B avoids the interference resource, the transmission of device B can be prevented from being interfered. Although it is called an interference resource here, this resource can also be a resource that causes a half-duplex problem. For example, device A reports the interference resource, and after device B avoids the interference resource, it can avoid half-duplex between the transmission of device B and the transmission of device C. labor problem. For simplicity, some cases may be collectively referred to as interference resources.

When the 2nd stage SCI cannot be demodulated correctly, device A knows that there are resources reserved, but cannot determine whether the reserved resources are receiving resources. At this time, the reserved resources can be treated as interference resources. In a word, for the reserved resources perceived by the device A, a part of the resources are called reception resources, and a part of the resources are called interference resources.

FIG. 6 is an example diagram of a receiving resource according to an embodiment of the present application. As shown in FIG. 6 , UE A receives the side link information sent by UE C to itself, and the resources used by UE A for receiving are called receiving resources. FIG. 7 is an example diagram of interference resources in an embodiment of the present application. As shown in FIG. 7 , UE A does not receive the side link information sent by UE C, and the transmission from UE C to UE D is a kind of interference for UE A , the resources that UE A is interfered with are called interference resources.

Optionally, for receiving resources or interference resources, the measured RSRP can be restricted to be higher than a certain RSRP threshold, that is, only when the signal strength or interference strength is higher than a certain threshold, the resource can become a receiving resource or interference resources, it is necessary for device B to avoid these resources. Conversely, if the signal strength or interference strength of the received resource or interference resource is less than the threshold value, device B can reuse these resources, that is, spatial reuse, and spectrum utilization can be improved through spatial reuse.

In some embodiments, when device A selects resources to report, the transmission of device A can be prioritized, so the transmission resource has the highest resource priority; secondly, the existing reception of device A is protected, so the receiving resource has the second highest resource priority Finally, the interference resource has the lowest resource priority, which can make the device B avoid the strong interference received by the device A when sending the side link information to the device A. Therefore, the resources can be divided into three types of resources, namely, the first type of resources, the second type of resources and the third type of resources, which correspond to transmission resources, reception resources and interference resources, respectively.

To sum up, the resources (candidate resources) that meet the reporting conditions can be divided into the first type of resources (transmission resources), the second type of resources (reception resources) and the third type of resources (interference resources), that is, divided into three types. Resource type. These three resource types have resource priorities from high to low. The device selects resources for reporting in descending order of resource priorities. A device may need to select resources within a certain class of resources. For resources with the same resource type, their resource priorities need to be further determined within the same resource type.

In some embodiments, when the types of the at least two side link resources are the first type of resources, the priorities of the at least two side link resources are based on the corresponding side link control information (SCI) The indicated priority is determined.

For example, for transmit resources, the resource priority is further dependent on the priority indicated by the SCI. The higher the priority indicated by the side link control information (SCI), the higher the priority of the side link resource. This is because the priority indicated by the SCI reflects the importance of the sending service. By preferentially selecting the resource with a higher priority indicated by the SCI, the service with a higher priority can be preferentially protected from being affected by the sending of the device B (protecting the device B). sending of A). For the resources with the same priority indicated by the SCI, the resource priority order can be determined by the device A, that is, it depends on the implementation of the device A.

In some embodiments, when the types of at least two side link resources are both the second type resource or the third type resource, the priority of the at least two side link resources is based on the corresponding side link resources The priority indicated by the control information (SCI) is determined. For example, the higher the priority indicated by the side link control information (SCI), the higher the priority of the side link resource.

In some embodiments, when the priorities indicated by the side link control information (SCI) corresponding to at least two side link resources are the same, and the types are both the second type of resources or the third type of resources, the The priorities of the at least two side link resources are determined according to the corresponding signal strengths (RSRP/RSSI). For example, the higher the signal strength (RSRP/RSSI), the higher the priority of the side link resources.

In some embodiments, when the types of at least two side link resources are both the second type resource or the third type resource, the priority of the at least two side link resources is based on the corresponding signal strength ( RSRP/RSSI) to determine. For example, the higher the signal strength (RSRP/RSSI), the higher the priority of the side link resources.

In some embodiments, when the signal strengths (RSRP/RSSI) corresponding to the at least two sidelink resources are the same, and the types are both the second type of resources or the third type of resources, the at least two sidelink resources The priority of the road resource is determined according to the priority indicated by the corresponding side link control information (SCI).

For example, for receiving resources, the resource priority is further dependent on the priority indicated by the SCI and/or the RSRP.

As an implementation manner, the resource priority depends on the priority indicated by the SCI, and the higher the priority indicated by the SCI, the higher the resource priority. This is because the priority indicated by the SCI reflects the importance of the received service. By preferentially selecting the resource with a higher priority indicated by the SCI, the service with a higher priority can be preferentially protected from being affected by the transmission of the device B (protecting the receiving of the device A). ).

Optionally, for resources with the same priority indicated by the SCI, the resource priority further depends on the RSRP, and the higher the RSRP, the higher the resource priority. This is because RSRP reflects the received signal strength. By preferentially selecting resources with higher RSRP, the reception of sidelink information with better signal strength can be preferentially protected from interference by device B (reception by device A is protected).

As another embodiment, the resource priority depends on the RSRP, and the higher the RSRP, the higher the resource priority.

Optionally, for resources with the same RSRP, the resource priority further depends on the priority indicated by the SCI, and the higher the priority indicated by the SCI, the higher the resource priority.

As another example, for interfering resources, the resource priority further depends on the priority indicated by the SCI and/or the RSRP.

As an implementation manner, the resource priority depends on the priority indicated by the SCI, and the higher the priority indicated by the SCI, the higher the resource priority. By preferentially selecting a resource with a higher priority indicated by the SCI, it is possible to preferentially protect the high-importance services of other devices from being affected by the transmission of the device B (protecting the transmission of other devices).

Optionally, for resources with the same priority indicated by the SCI, the resource priority further depends on the RSRP, and the higher the RSRP, the higher the resource priority. By preferentially selecting a resource with a higher RSRP, device B can be made to preferentially avoid strong interference resources in transmission (protecting the transmission of device B).

As another embodiment, the resource priority depends on the RSRP, and the higher the RSRP, the higher the resource priority. By preferentially selecting a resource with a higher RSRP, device B can be made to preferentially avoid strong interference resources in transmission (protecting the transmission of device B).

Optionally, for resources with the same RSRP, the resource priority further depends on the priority indicated by the SCI, and the higher the priority indicated by the SCI, the higher the resource priority. By preferentially selecting a resource with a higher priority indicated by the SCI, it is possible to preferentially protect the high-importance services of other devices from being affected by the transmission of the device B (protecting the transmission of other devices).

The embodiments of the present application will be described below through Table 1:

Table 1

In some embodiments, the resources of the first type, the resources of the second type and the resources of the third type are represented by P ₁ , P ₂ and P ₃ respectively, and the resource priorities of P ₁ , P ₂ and P ₃ are in descending order. Decrease. The priority indicated by the SCI is represented by p _i , and the resource priorities of p ₁ , p ₂ , p ₃ , . . . decrease sequentially from high to low. RSRP is represented by RSRP _i , and the resource priorities of RSRP ₁ , RSRP ₂ , RSRP ₃ . . . decrease sequentially from high to low. For a certain resource, it can be uniquely identified by (P _u , p _v ), or it can be uniquely identified by (P _u , p _v , RSRP _w ).

FIG. 8 is an example diagram of selecting resources according to an embodiment of the present application, and FIG. 9 is another example diagram of selecting resources according to an embodiment of the present application. For the resources in Figures 8 and 9, their resource priorities decrease sequentially from top to bottom. When the device needs to select N resources (N<M) from the M resources for reporting, the device selects the N resources with the highest priority.

As shown in FIG. 8 , for the receiving resource and the interference resource, the resource with higher priority indicated by the SCI may be preferentially selected, and for the same priority indicated by the SCI, the resource with high RSRP is preferentially selected.

As shown in FIG. 9 , for the receiving resource: the resource with higher priority indicated by the SCI may be preferentially selected; for the same priority indicated by the SCI, the resource with high RSRP is preferentially selected. For the interference resource: the resource with high RSRP can be preferentially selected; for the same RSRP, the resource with high priority indicated by the SCI is preferentially selected.

It should be noted that, in the embodiment of the present application, it is not required that the auxiliary information includes the first type of resources, the second type of resources and the third type of resources at the same time. If a certain type of resource does not exist, the device skips this type of resource when selecting it, so the embodiment of the present application can be used when the auxiliary information does not include any one of the first type resource, the second type resource and the third type resource at the same time. a situation. In other words, as long as the auxiliary information includes at least one of the first type of resources, the second type of resources, and the third type of resources, the embodiments of the present application can be used.

This embodiment of the present application does not limit the reason why a certain type of resource does not exist. For example, a device may only be allowed to report resources of the first type. For another example, although the device is allowed to report all three types of resources, since the device does not send side link information when reporting, the reported auxiliary information does not include the first type of resources. Not listed here.

It can be known from the above embodiment that the first terminal device selects N side link resources with the highest priority from M side link resources in order of priority from high to low; the side link resources included in the auxiliary information are: The first terminal device does not recommend resources used by the second terminal device. Therefore, the number of resources that the auxiliary information needs to be carried is limited within a certain range, and the code rate of the auxiliary information will not be too high, so as to ensure that the auxiliary information can be correctly demodulated and decoded; the reliability of auxiliary information transmission can be improved. Enables collaboration between users to take advantage of avoiding collision problems and half-duplex problems.

Embodiments of the third aspect

The embodiments of the present application provide supplementary descriptions on the basis of the embodiments of the first and second aspects, and the same contents as those of the embodiments of the first and second aspects will not be repeated. In the embodiment of the third aspect, the first terminal device selects N side link resources with the highest priority from the M side link resources in order of priority from high to low. The side link resources included in the auxiliary information are resources that the first terminal device does not recommend to be used by the second terminal device.

In the embodiment of the third aspect, the types of side link resources include at least one of the following: the first type of resources are transmission resources, the second type of resources are reception resources and/or interference resources; the priority of the first type of resources is greater than The priority of the second type of resource.

For example, the device divides resources into two types of resources according to whether they are transmitting on the resources: the first type of resources includes transmission resources, and the second type of resources includes reception resources and interference resources, that is, including all perceived reserved resources ( Optionally, the RSRP of the reserved resource needs to be higher than a certain RSRP threshold). For definitions of sending resources, receiving resources and interference resources, reference may be made to the embodiments of the second aspect. In the embodiment of the present application, since the second type of resource is a perceived reserved resource, the device can determine the second type of resource without demodulating the 2nd stage SCI.

In some embodiments, when the types of the at least two side link resources are the first type of resources, the priorities of the at least two side link resources are based on the corresponding side link control information (SCI) The indicated priority is determined. For example, the higher the priority indicated by the side link control information (SCI), the higher the priority of the side link resource.

In some embodiments, when the types of the at least two side link resources are the second type of resources, the priorities of the at least two side link resources are based on the corresponding side link control information (SCI) The indicated priority is determined. For example, the higher the priority indicated by the side link control information (SCI), the higher the priority of the side link resource.

In some embodiments, in the case that the priorities indicated by the side link control information (SCI) corresponding to at least two side link resources are the same, and the types of the at least two side link resources are the second type of resources, the at least two side link resources The priority of link resources is determined according to the corresponding signal strength (RSRP/RSSI). For example, the higher the signal strength (RSRP/RSSI), the higher the priority of the side link resources.

In some embodiments, when the types of the at least two side link resources are the second type of resources, the priorities of the at least two side link resources are determined according to the corresponding signal strengths (RSRP/RSSI) . For example, the higher the signal strength (RSRP/RSSI), the higher the priority of the side link resources.

In some embodiments, when the signal strengths (RSRP/RSSI) corresponding to the at least two side link resources are the same, and the types are both of the second type of resources, the priority of the at least two side link resources It is determined according to the priority indicated by the corresponding side link control information (SCI).

The embodiments of the present application will be described below through Table 2:

Table 2

FIG. 10 is another example diagram of selecting resources according to an embodiment of the present application, and FIG. 11 is another example diagram of selecting resources according to an embodiment of the present application. The definitions of variables p _i and RSRP _i in Figures 10 and 11 are the same as in Figures 8 and 9 .

As shown in FIG. 10 , for the second type of resource, the resource with higher priority indicated by the SCI is preferentially selected, and for the same priority indicated by the SCI, the resource with high RSRP is preferentially selected. As shown in FIG. 11 , for the second type of resources, the resources with high RSRP are preferentially selected, and for the same RSRP, the resources with high priority indicated by the SCI are preferentially selected. For the resources in Figures 10 and 11, their resource priorities decrease sequentially from top to bottom. When the device needs to select N resources (N<M) from the M resources for reporting, the device selects the N resources with the highest priority.

It should be noted that the auxiliary information in this embodiment of the present application does not necessarily include both the first type of resources and the second type of resources. The second type of resources does not necessarily include both reception resources and interference resources.

Embodiments of the fourth aspect

The embodiments of the present application provide supplementary descriptions on the basis of the embodiments of the first to third aspects, and the same content as the embodiments of the first to third aspects will not be repeated. In the embodiment of the fourth aspect, the first terminal device selects N side link resources with the highest priority from the M side link resources in order of priority from high to low. The side link resources included in the auxiliary information are resources that the first terminal device does not recommend to be used by the second terminal device.

In the embodiment of the fourth aspect, the types of the side link resources include at least one of the following: the first type of resources are transmission resources and/or reception resources, and the second type of resources are interference resources; the priority of the first type of resources is greater than The priority of the second type of resource.

For example, the device classifies resources into two resource types according to whether the resource is of interest to itself. When a device needs to send sidelink information or receive sidelink information on a resource, the resource is a resource of interest to the device. The first type of resources includes sending resources and receiving resources, that is, resources of interest to the device. The second type of resources includes interfering resources, which are not resources of interest to the device.

In some embodiments, in the case where the priorities indicated by the side link control information (SCI) corresponding to at least two side link resources are the same and the types are the first type of resources, the at least two side link resources The priority of the link resources is determined in the order that the priority of the sending resource is higher than the priority of the receiving resource.

In some embodiments, in the case where the priorities indicated by the side link control information (SCI) corresponding to at least two side link resources are the same, the types are the first type of resources, and they are all receiving resources, the The priorities of at least two side link resources are determined according to the corresponding signal strengths (RSRP/RSSI). For example, the higher the signal strength (RSRP/RSSI), the higher the priority of the side link resources.

The embodiments of the application will be described below through Table 3:

table 3

FIG. 12 is another example diagram of selecting resources according to an embodiment of the present application. The definitions of variables p _i and RSRP _i in FIG. 12 are the same as those in FIGS. 8 and 9 . For the resources in Fig. 12, the priority of the resources decreases sequentially from top to bottom. As shown in FIG. 12 , for the second type of resource, the resource with high priority indicated by the SCI is preferentially selected, and for the same priority indicated by the SCI, the resource with high RSRP is preferentially selected.

It should be noted that the auxiliary information in this embodiment of the present application does not necessarily include both the first type of resources and the second type of resources. The first type of resources does not necessarily include both sending and receiving resources.

Embodiments of the Fifth Aspect

The embodiments of the present application provide supplementary descriptions based on the embodiments of the first to fourth aspects, and the same content as the embodiments of the first to fourth aspects will not be repeated. In the embodiment of the fifth aspect, the first terminal device selects N side link resources with the highest priority from the M side link resources in order of priority from high to low. The side link resources included in the auxiliary information are resources that the first terminal device does not recommend to be used by the second terminal device.

In some embodiments, the priority of the side link resources is determined according to the priority indicated by the corresponding side link control information (SCI). For example, the higher the priority indicated by the side link control information (SCI), the higher the priority of the side link resource.

For example, the device selects resources according to the priority indicated by the SCI in descending order, that is, the resources are not classified according to the resource type; or all candidate reporting resources have the same resource type; for example, they are classified into the first type of resources: sending resources , at least one of receiving resources and interference resources.

In some embodiments, when the priorities indicated by the side link control information (SCI) corresponding to the at least two side link resources are the same, the priorities of the at least two side link resources are based on the transmission resources The priority of the priority is higher than the priority of the receiving resource and/or the priority of the interference resource is determined in order.

In some embodiments, when the priorities indicated by the side link control information (SCI) corresponding to the at least two side link resources are the same, and neither of the at least two side link resources is a transmission resource, the at least two side link resources The priority is determined according to the corresponding signal strength (RSRP/RSSI). For example, the higher the signal strength (RSRP/RSSI), the higher the priority of the side link resources.

For example, when the device selects resources in the first type of resources, the device selects the resources in descending order of priorities indicated by the SCI. Optionally, when the device selects resources among resources with the same priority indicated by the SCI, the device preferentially selects transmission resources, and then selects reception resources and/or interference resources. Optionally, when the device selects resources among the receiving resources and/or the interference resources, the device selects the resources in the order of RSRP from high to low.

FIG. 13 is another example diagram of selecting resources according to an embodiment of the present application. The definitions of variables p _i and RSRP _i in FIG. 13 are the same as in FIGS. 8 and 9 . For the resources in Fig. 13, the priority of the resources decreases sequentially from top to bottom.

It should be noted that the embodiments of the present application do not necessarily include sending resources, receiving resources and interference resources at the same time.

Embodiments of the sixth aspect

The embodiments of the present application provide supplementary descriptions on the basis of the embodiments of the first to fifth aspects, and the same content as the embodiments of the first to fifth aspects will not be repeated. In the embodiment of the sixth aspect, the first terminal device selects N side link resources with the highest priority from the M side link resources in order of priority from high to low. The side link resources included in the auxiliary information are resources that the first terminal device does not recommend to be used by the second terminal device.

In some embodiments, the trigger conditions corresponding to the side link resources include: triggered by an event to report; not triggered by an event to report; the priority of the side link resource triggered by the event to report is higher than that of the side link not triggered by the event to report The priority of the resource.

For example, the device selects resources in descending order of the following resource types. The resource priorities of class A resources and class B resources decrease in order from high to low.

-Type A resources: resources that trigger devices to report auxiliary information. When the device selects a resource in the A-type resource, any one of the methods in the embodiments of the second aspect to the fifth aspect may be used to select the resource.

-B-type resources: resources other than A-type resources that meet the reporting conditions. When the device selects the resource in the B-type resource, any one of the methods in the embodiments of the second aspect to the fifth aspect may be used to select the resource.

For example, suppose that device A reports auxiliary information to device B. Device A can actively report auxiliary information to device B when the trigger conditions are met, that is, the reporting is event-triggered. For example, based on perception, device A finds that there is a collision problem or a half-duplex problem between the transmission of device B and the transmission of device C. Device A is triggered to report auxiliary information, and device A reports the resources occupied by device C to device B, thereby Device B can avoid the resources of device C in subsequent transmissions, thereby avoiding collision problems or half-duplex problems.

The class A resource here is the resource of the device C. The resource needs to be included in the auxiliary information to solve the collision problem or the half-duplex problem. Therefore, the class A resource has a higher resource priority than other candidate reporting resources. class. For another example, when device A has side link information to be sent, device A is triggered to report auxiliary information, and reports to device B the resources used for sending its own side link. The trigger conditions are not listed one by one.

When the A-type resource includes more than one resource, any method in the embodiments of the second aspect to the fifth aspect can be used to select the resource, that is, the A-type resource can be further divided into the first-type resource and the second-type resource and/or the third category of resources, and make subsequent resource selections. For candidate resources (type B resources) other than resources of type A, any one of the methods in the embodiments of the second aspect to the fifth aspect may be used to select resources. In short, Class A resources can trigger device A to report auxiliary information, and such resources will be preferentially selected.

FIG. 14 is another example diagram of selecting resources according to an embodiment of the present application. The definitions of variables p _i and RSRP _i in FIG. 14 are the same as those in FIGS. 8 and 9 . For the resources in Fig. 14, the priority of the resources decreases sequentially from top to bottom.

As shown in FIG. 14, class A resources are selected in preference to class B resources. The device uses the method of Embodiment 1 to select and report resources within the A-type resources and the B-type resources. Class A resources include only interference resources (P ₃ ). Class B resources include transmit resources (P ₁ ), receive resources (P ₂ ), and interference resources (P ₃ ).

Embodiments of the seventh aspect

The embodiments of the present application provide supplementary descriptions on the basis of the embodiments of the first to sixth aspects, and the same content as the embodiments of the first to sixth aspects will not be repeated. In the embodiments of the second to sixth aspects, the side link resources included in the auxiliary information are resources that are not recommended by the first terminal device to be used by the second terminal device.

In the embodiment of the seventh aspect, the side link resources included in the auxiliary information are resources recommended by the first terminal device to be used by the second terminal device; Among the link resources, the N side link resources with the lowest priority are selected.

In some embodiments, the priorities of the M side link resources are determined according to the signal strength (RSRP/RSSI) corresponding to the side link resources. For example, the higher the signal strength (RSRP/RSSI), the higher the priority of the side link resources.

In some embodiments, when the signal strengths (RSRP/RSSI) corresponding to the at least two side link resources are the same, the priorities of the at least two side link resources are based on the corresponding side link control information. (SCI) indicates priority determination. For example, the higher the priority indicated by the side link control information (SCI), the higher the priority of the side link resource.

In some embodiments, sidelink resources that are not reserved are determined to have the lowest corresponding signal strengths (RSRP/RSSI).

For example, when the device needs to select N resources (N<M) from M resources for reporting, the device selects the N resources with the lowest priority. The device may select resources in ascending order of RSRP and/or RSSI. The lower the RSRP and/or RSSI, the lower the resource priority. Resources that are not reserved are considered to have the lowest RSRP, ie are selected first.

Optionally, when more than one resource has the same RSRP/RSSI, the device selects the resources in descending order of priority indicated by the SCI. The lower the priority indicated by the SCI, the lower the resource priority. Resources that are not reserved may be considered to have the lowest priority indicated by the SCI, ie to be selected first.

For example, suppose that device A reports auxiliary information to device B. The auxiliary information includes a resource set, and the resources in the set are the resources that device A recommends device B to use. After receiving the auxiliary information, device B can send the sidelink information to device A using the recommended resources. It is recommended that the resources used by the device B be the resources with less interference, that is, the resources with less RSRP and/or RSSI (RSRP/RSSI) of the resources.

Device A can know which resources have been reserved and which resources have not been reserved based on perception. For the resources reserved by PSCCH#1/PSSCH#1, device A can estimate the interference intensity of the resource based on the RSRP measurement result of PSCCH#1/PSSCH#1. The smaller the RSRP, the smaller the interference to the resource.

Device A selects resources in ascending order of RSRP, and can select resources with less interference and recommend them to device B for use. For a resource that is not reserved, the resource does not have a corresponding RSRP measurement result. Such a resource is considered to have the lowest RSRP, that is, it is not interfered by other devices, so it will be selected first. Compared with RSRP, RSSI is a measurement result in a statistical sense. Even resources that are not reserved may have corresponding RSSIs. Therefore, devices can uniformly select resources in ascending order of RSSI.

For a resource recommended by device A to be used by device B, the resource may also be a reserved resource, that is, if the interference intensity of the resource is small, it can still be used by device B. When the recommended resource is a reserved resource, the resource also corresponds to a priority indicated by an SCI. When more than one resource has the same RSRP/RSSI, the device selects the resources according to the priority indicated by the SCI from low to high, which can avoid causing interference to the services with higher priority indicated by the SCI, that is, give priority to protecting the priority indicated by the SCI. higher priority business.

It can be seen from the above embodiment that the first terminal device selects N side link resources with the lowest priority from M side link resources in order of priority from low to high; the side link resources included in the auxiliary information are: The first terminal device recommends resources used by the second terminal device. Therefore, the number of resources that the auxiliary information needs to be carried is limited within a certain range, and the code rate of the auxiliary information will not be too high, so as to ensure that the auxiliary information can be correctly demodulated and decoded; the reliability of auxiliary information transmission can be improved. Enables collaboration between users to take advantage of avoiding collision problems and half-duplex problems.

Embodiments of the Eighth Aspect

The embodiments of the present application provide supplementary descriptions on the basis of the embodiments of the first to seventh aspects, and the same content as the embodiments of the first to seventh aspects will not be repeated. The embodiments of the present application may be combined with the embodiments of the first to seventh aspects, or may be implemented independently.

In some embodiments, the priority indicated by the side link control information (SCI) corresponding to the auxiliary information is equal to the priority indicated by the side link control information (SCI) corresponding to all resources carried by the auxiliary information highest priority.

For example, a PSSCH has a priority, which is indicated by the priority field in the PSCCH (1st stage SCI) that schedules the PSSCH. This priority is the priority indicated by the aforementioned SCI. The priority indicated by the SCI can be used to determine the RSRP threshold value in mode 2 resource selection, to determine whether to be preempted in pre-emption, and to transmit one or more sidelink signals/channels and/or When there are one or more uplink signals/channels, it is decided which signal/channel to send first or which signal/channel is to be allocated power with priority, etc.

For the auxiliary information carried by the PSSCH, the priority field of the PSCCH in which the auxiliary information is scheduled also needs to be determined, that is, the priority indicated by the SCI of the auxiliary information is determined. Auxiliary information may carry one or more resources. For the embodiments of the first to sixth aspects, each resource corresponds to a priority indicated by the SCI, and the priority indicated by the SCI of the auxiliary information is equal to the priority indicated by the highest SCI among all resources carried by the resource. For the embodiment of the seventh aspect, the priority of the auxiliary information is the priority of the service that UE A wants to receive.

Embodiments of the ninth aspect

An embodiment of the present application provides a resource selection method, which is described from the second terminal device, and the same content as the embodiments of the first to eighth aspects will not be repeated. Wherein, the second terminal device may receive auxiliary information (including resource information or resource set) sent by the first terminal device, and select resources according to the auxiliary information to send sidelink information (including data information and/or control information and/or resource set) or feedback).

FIG. 15 is a schematic diagram of a resource selection method according to an embodiment of the present application. As shown in FIG. 15 , the method includes:

1501. A second terminal device receives auxiliary information sent by a first terminal device, where the auxiliary information is generated by the first terminal device selecting N side link resources from M side link resources; wherein N and M are both. is a positive integer and N is less than M; and

1502. The second terminal device performs sidelink resource selection according to the auxiliary information.

It is worth noting that the above FIG. 15 only schematically illustrates the embodiment of the present application, but the present application is not limited thereto. For example, the execution order of the various operations can be adjusted appropriately, and other operations can be added or some of the operations can be reduced. Those skilled in the art can make appropriate modifications according to the above content, and are not limited to the description of the above-mentioned FIG. 15 .

In this embodiment of the present application, after selecting side link resources, the second terminal device may use these resources to send side links. For how to select side link resources and how to perform side link transmission, reference may be made to related technologies, and details are not repeated here.

It can be known from the above embodiments that the second terminal device receives the auxiliary information sent by the first terminal device, where the auxiliary information is generated by the first terminal device selecting N side link resources from M side link resources. As a result, the number of resources that the auxiliary information needs to carry is limited within a certain range, and the code rate of the auxiliary information will not be too high, so as to ensure that the auxiliary information can be correctly demodulated and decoded; the reliability of auxiliary information transmission can be improved. Enables collaboration between users to take advantage of avoiding collision problems and half-duplex problems.

Embodiments of the tenth aspect

An embodiment of the present application provides a resource reporting device. The apparatus may be, for example, a terminal device (the aforementioned first terminal device), or may be one or some components or components configured in the terminal device. The same content as the embodiments of the first to eighth aspects is not the same Repeat.

FIG. 16 is a schematic diagram of a resource reporting apparatus according to an embodiment of the present application. As shown in FIG. 16 , the resource reporting apparatus 1600 includes:

determining unit 1601, which determines M side link resources for reporting to the second terminal device;

A selection unit 1602 that selects N sidelink resources from the M sidelink resources to generate auxiliary information; wherein N and M are both positive integers and N is less than M; and

A sending unit 1603, which sends the auxiliary information to the second terminal device.

In some embodiments, the M side link resources include at least one of the following: a sending resource used by the first terminal device for sending side link information, a sending resource used by the first terminal device for receiving side link information, and a receiving side link perceived by the first terminal device Information receiving resources, and interference resources perceived by the first terminal device.

In some embodiments, the selecting unit 1602 selects the N side link resources from the M side link resources randomly or according to priority.

In some embodiments, the priority is determined according to at least one of the following information: the priority indicated by the sidelink control information corresponding to the sidelink resource, the signal corresponding to the sidelink resource strength, the type of the side link resource, and the trigger condition corresponding to the side link resource.

In some embodiments, the selection unit 1602 selects N side link resources with the highest priority from the M side link resources in order of priority from high to low; the side link resources included in the auxiliary information Road resources are resources that are not recommended by the first terminal device to be used by the second terminal device.

In some embodiments, the types of the side link resources include at least one of the following: the first type of resources is transmission resources, the second type of resources is reception resources, and the third type of resources is interference resources; the priority of the first type of resources The priority of the resources of the second type is higher than the priority of the resources of the second type, and the priority of the resources of the second type is higher than the priority of the resources of the third type.

In some embodiments, when the types of the at least two side link resources are the first type of resources, the priorities of the at least two side link resources are determined according to the corresponding side link control information. The indicated priority is determined; wherein, the higher the priority indicated by the side link control information, the higher the priority of the side link resource.

In some embodiments, when the types of at least two side link resources are the second type of resources or the third type of resources, the priorities of the at least two side link resources are based on the corresponding The priority indicated by the side link control information is determined.

In some embodiments, in the case that the priorities indicated by the side link control information corresponding to at least two side link resources are the same, and the types are both the second type of resources or the third type of resources, The priorities of the at least two side link resources are determined according to the corresponding signal strengths; wherein, the higher the signal strength, the higher the priority of the side link resources.

In some embodiments, when the types of at least two side link resources are the second type of resources or the third type of resources, the priorities of the at least two side link resources are based on the corresponding The signal strength is determined; wherein, the higher the signal strength, the higher the priority of the side link resource.

In some embodiments, when the signal strengths corresponding to the at least two sidelink resources are the same and the types are the second type of resources or the third type of resources, the at least two sidelink resources The priority of the resource is determined according to the priority indicated by the corresponding side link control information.

In some embodiments, the types of the side link resources include at least one of the following: a first type of resources, namely transmit resources, a second type of resources, namely receive resources and/or interference resources; the priority of the first type of resources greater than the priority of the second type of resources.

In some embodiments, when the types of at least two side link resources are the resources of the second type, the priorities of the at least two side link resources are determined according to the corresponding side link control information. The indicated priority is determined.

In some embodiments, in the case where the priorities indicated by the side link control information corresponding to the at least two side link resources are the same and the types are the second type of resources, the at least two side link resources The priority of the path resource is determined according to the corresponding signal strength; wherein, the higher the signal strength, the higher the priority of the side link resource.

In some embodiments, when the types of at least two side link resources are the resources of the second type, the priorities of the at least two side link resources are determined according to the corresponding signal strengths; wherein, The higher the signal strength, the higher the priority of the side link resource.

In some embodiments, when the signal strengths corresponding to the at least two side link resources are the same and the types are the second type of resources, the priorities of the at least two side link resources are based on the corresponding The priority indicated by the side link control information is determined.

In some embodiments, the types of the side link resources include at least one of the following: a first type of resources, namely sending resources and/or receiving resources, and a second type of resources, namely interference resources; the priority of the first type of resources greater than the priority of the second type of resources.

In some embodiments, when the types of at least two side link resources are the resources of the second type, the priorities of the at least two side link resources are determined according to the corresponding side link control information. The indicated priority is determined; wherein, the higher the priority indicated by the side link control information, the higher the priority of the side link resource.

In some embodiments, in the case where the priorities indicated by the side link control information corresponding to the at least two side link resources are the same and the types are the second type of resources, the at least two side link resources The priority of the path resource is determined according to the corresponding signal strength; the higher the signal strength, the higher the priority of the side link resource.

In some embodiments, in the case where the priorities indicated by the side link control information corresponding to at least two side link resources are the same and the types are the first type of resources, the at least two side link resources The priorities of the road resources are determined in an order in which the priorities of the transmission resources are greater than the priorities of the reception resources.

In some embodiments, in the case where the priorities indicated by the side link control information corresponding to at least two side link resources are the same, the types are the first type of resources, and both are the receiving resources, the The priorities of the at least two side link resources are determined according to the corresponding signal strengths; the higher the signal strength, the higher the priority of the side link resources.

In some embodiments, the priority of the side link resource is determined according to the priority indicated by the corresponding side link control information; the higher the priority indicated by the side link control information, the higher the priority of the side link resource. higher priority.

In some embodiments, when the priorities indicated by the side link control information corresponding to the at least two side link resources are the same, the priorities of the at least two side link resources are sent according to the The priority of resources is higher than the priority of the receiving resources and/or the priority of the interference resources is determined in order.

In some embodiments, in the case where the priorities indicated by the side link control information corresponding to at least two side link resources are the same and neither is the sending resource, the at least two side link resources have the same priority. The priority is determined according to the corresponding signal strength; wherein, the higher the signal strength, the higher the priority of the side link resource.

In some embodiments, the trigger conditions corresponding to the side link resources include: triggered by an event to report; not triggered by an event to report; the priority of the side link resource triggered by an event to be reported is higher than that of a non-event-triggered report the priority of the side link resources.

In some embodiments, the selecting unit 1602 selects N side link resources with the lowest priority from the M side link resources in order of priority from low to high; the side link resources included in the auxiliary information A road resource is a resource recommended by the first terminal device to be used by the second terminal device.

In some embodiments, the priorities of the M side link resources are determined according to the signal strengths corresponding to the side link resources; wherein, the higher the signal strength, the higher the priority of the side link resources. high.

In some embodiments, when the signal strengths corresponding to the at least two side link resources are the same, the priorities of the at least two side link resources are based on the priorities indicated by the corresponding side link control information. Determine; wherein, the higher the priority indicated by the side link control information, the higher the priority of the side link resource.

It is worth noting that the above only describes each component or module related to the present application, but the present application is not limited thereto. The resource reporting apparatus 1600 may further include other components or modules, and for the specific contents of these components or modules, reference may be made to related technologies.

In addition, for the sake of simplicity, FIG. 16 only exemplarily shows the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned components or modules may be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc. The implementation of this application does not limit this.

It can be known from the above embodiments that the first terminal device selects N side link resources from the M side link resources to generate auxiliary information; and sends the auxiliary information to the second terminal device. Therefore, the number of resources to be carried by the auxiliary information is limited within a certain range, and the code rate of the auxiliary information will not be too high, thereby ensuring that the auxiliary information can be correctly demodulated and decoded.

Embodiments of the Eleventh Aspect

Embodiments of the present application provide a resource selection apparatus. The apparatus may be, for example, a terminal device (the aforementioned second terminal device), or may be one or some components or components configured in the terminal device, and the same contents as those of the embodiments of the first to tenth aspects will not be repeated. Repeat.

FIG. 17 is another schematic diagram of a resource selection apparatus according to an embodiment of the present application. As shown in FIG. 17 , the resource selection apparatus 1700 includes:

A receiving unit 1701, which receives auxiliary information sent by a first terminal device, where the auxiliary information is generated by the first terminal device selecting N side link resources from M side link resources; wherein N and M are both a positive integer and N is less than M; and

A selection unit 1702, which performs side link resource selection according to the auxiliary information.

It is worth noting that the above only describes each component or module related to the present application, but the present application is not limited thereto. The resource selection apparatus 1700 may also include other components or modules, and for the specific content of these components or modules, reference may be made to the related art.

In addition, for the sake of simplicity, FIG. 17 only exemplarily shows the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned components or modules may be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc. The implementation of this application does not limit this.

Embodiments of the Twelfth Aspect

An embodiment of the present application further provides a communication system, and reference may be made to FIG. 1 , and the same content as the embodiments of the first aspect to the eleventh aspect will not be repeated.

In some embodiments, the communication system 100 may include at least:

a first terminal device, which determines M side link resources for reporting; selects N side link resources from the M side link resources to generate auxiliary information; wherein N and M are both positive integers and N less than M; and

The second terminal device receives the auxiliary information, and performs sidelink resource selection according to the auxiliary information.

The embodiment of the present application also provides a network device, which may be, for example, a base station, but the present application is not limited to this, and may also be other network devices.

FIG. 18 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in FIG. 18 , the network device 1800 may include: a processor 1810 (eg, a central processing unit CPU) and a memory 1820 ; the memory 1820 is coupled to the processor 1810 . The memory 1820 can store various data; in addition, the program 1830 for information processing is also stored, and the program 1830 is executed under the control of the processor 1810 .

In addition, as shown in FIG. 18, the network device 1800 may further include: a transceiver 1840, an antenna 1850, etc.; wherein, the functions of the above components are similar to those in the prior art, and details are not repeated here. It is worth noting that the network device 1800 does not necessarily include all the components shown in FIG. 18 ; in addition, the network device 1800 may also include components not shown in FIG. 18 , and reference may be made to the prior art.

The embodiment of the present application also provides a terminal device, but the present application is not limited to this, and may also be other devices.

FIG. 19 is a schematic diagram of a terminal device according to an embodiment of the present application. As shown in FIG. 19 , the terminal device 1900 may include a processor 1910 and a memory 1920 ; the memory 1920 stores data and programs, and is coupled to the processor 1910 . Notably, this figure is exemplary; other types of structures may be used in addition to or in place of this structure to implement telecommunication functions or other functions.

For example, the processor 1910 may be configured to execute a program to implement the resource reporting method according to the embodiments of the first to eighth aspects. For example, the processor 1910 may be configured to perform the following controls: determine M side link resources for reporting to the second terminal device; select N side link resources from the M side link resources to generate auxiliary information; wherein both N and M are positive integers and N is less than M; and sending the auxiliary information to the second terminal device.

For example, the processor 1910 may be configured to execute a program to implement the resource selection method described in the embodiment of the ninth aspect. For example, the processor 1910 may be configured to perform the following control: receiving auxiliary information sent by the first terminal device, where the auxiliary information is selected by the first terminal device N side link resources from M side link resources generating; wherein N and M are both positive integers and N is less than M; and performing side link resource selection according to the auxiliary information.

As shown in FIG. 19 , the terminal device 1900 may further include: a communication module 1930 , an input unit 1940 , a display 1950 , and a power supply 1960 . The functions of the above components are similar to those in the prior art, and details are not repeated here. It is worth noting that the terminal device 1900 does not necessarily include all the components shown in FIG. 19 , and the above components are not required; in addition, the terminal device 1900 may also include components not shown in FIG. 19 . There is technology.

An embodiment of the present application further provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the resource reporting method according to the embodiments of the first to eighth aspects.

An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the resource reporting method described in the embodiments of the first to eighth aspects.

The embodiment of the present application further provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the resource selection method according to the embodiment of the ninth aspect.

The embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program causes the terminal device to execute the resource selection method described in the embodiment of the ninth aspect.

The apparatuses and methods above in the present application may be implemented by hardware, or may be implemented by hardware combined with software. The present application relates to a computer-readable program that, when executed by logic components, enables the logic components to implement the above-described apparatus or constituent components, or causes the logic components to implement the above-described various methods or steps. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, and the like.

The method/apparatus described in conjunction with the embodiments of this application may be directly embodied as hardware, a software module executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in the figures and/or one or more combinations of the functional block diagrams may correspond to either software modules or hardware modules of the computer program flow. These software modules may respectively correspond to the various steps shown in the figure. These hardware modules can be implemented by, for example, solidifying these software modules using a Field Programmable Gate Array (FPGA).

A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. A storage medium can be coupled to the processor, such that the processor can read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor. The processor and storage medium may reside in an ASIC. The software module can be stored in the memory of the mobile terminal, or can be stored in a memory card that can be inserted into the mobile terminal. For example, if a device (such as a mobile terminal) adopts a larger-capacity MEGA-SIM card or a large-capacity flash memory device, the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.

For one or more of the functional blocks and/or one or more combinations of the functional blocks described in the figures, it can be implemented as a general-purpose processor, a digital signal processor (DSP) for performing the functions described in this application ), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof. One or more of the functional blocks and/or one or more combinations of the functional blocks described with respect to the figures can also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors processor, one or more microprocessors in communication with the DSP, or any other such configuration.

The present application has been described above with reference to the specific embodiments, but those skilled in the art should understand that these descriptions are all exemplary and do not limit the protection scope of the present application. Those skilled in the art can make various variations and modifications to the present application according to the spirit and principles of the present application, and these variations and modifications are also within the scope of the present application.

Regarding the implementations including the above embodiments, the following additional notes are also disclosed:

Appendix 1. A method for reporting resources, including:

Supplement 2. The method according to Supplement 1, wherein the M side link resources include at least one of the following: a sending resource used by the first terminal device to send side link information, the first Reception resources perceived by the terminal device for receiving side link information, and interference resources perceived by the first terminal device.

Supplement 3. The method according to

Supplement

1 or 2, wherein the first terminal device selects the N side link resources from the M side link resources randomly or according to priorities.

Supplement 4. The method according to Supplement 3, wherein the priority is determined according to at least one of the following information: the priority indicated by the side link control information (SCI) corresponding to the side link resource level, the signal strength (RSRP/RSSI) corresponding to the side link resource, the type of the side link resource, and the trigger condition corresponding to the side link resource.

Supplement 5. The method according to Supplement 3, wherein the first terminal device selects N side chains with the highest priority from the M side link resources in order of priority from high to low road resources.

Supplement 6. The method according to Supplement 5, wherein the types of the side link resources include at least one of the following: the first type of resources is sending resources, the second type of resources is receiving resources, and the third type of resources is interfere with resources;

The priority of the first type of resources is higher than the priority of the second type of resources, and the priority of the second type of resources is higher than the priority of the third type of resources.

Supplement 7. The method according to Supplement 6, wherein, in the case that the types of at least two side link resources are the first type of resources, the priorities of the at least two side link resources are according to The priority indicated by the corresponding side link control information (SCI) is determined.

Supplement 8. The method according to Supplement 6 or 7, wherein, in the case that the types of at least two side link resources are the second type of resources or the third type of resources, the at least two The priority of each side link resource is determined according to the priority indicated by the corresponding side link control information (SCI).

Supplement 9. The method according to Supplement 6 or 7, wherein the priority levels indicated by the side link control information (SCI) corresponding to the at least two side link resources are the same and the types are all the same. In the case of the second type of resources or the third type of resources, the priorities of the at least two side link resources are determined according to the corresponding signal strengths (RSRP/RSSI).

Supplement 10. The method according to Supplement 6 or 7, wherein, when the types of at least two side link resources are both the second type of resources or the third type of resources, the at least two The priority of each side link resource is determined according to the corresponding signal strength (RSRP/RSSI).

Supplement 11. The method according to Supplement 6 or 7, wherein the signal strengths (RSRP/RSSI) corresponding to the at least two side link resources are the same, and both types are the second type of resources or In the case of the third type of resources, the priorities of the at least two side link resources are determined according to the priorities indicated by the corresponding side link control information (SCI).

Supplement 12. The method according to any one of Supplementary Notes 7 to 11, wherein the higher the priority indicated by the side link control information (SCI), the higher the priority of the side link resource.

Supplementary Note 13. The method according to any one of Supplementary Notes 9 to 11, wherein the higher the signal strength (RSRP/RSSI), the higher the priority of the side link resource.

Supplementary note 14. The method according to supplementary note 5, wherein the types of the side link resources include at least one of the following: a first type of resource is a sending resource, a second type of resource is a receiving resource and/or an interference resource;

The priority of the first type of resources is greater than the priority of the second type of resources.

Supplementary Note 15. The method according to Supplementary Note 14, wherein, in the case that the types of at least two side link resources are the resources of the first type, the priorities of the at least two side link resources are based on: The priority indicated by the corresponding side link control information (SCI) is determined.

Supplementary Note 16. The method according to Supplementary Note 14 or 15, wherein, when the types of at least two side link resources are the second type of resources, the priority of the at least two side link resources The level is determined according to the priority indicated by the corresponding side link control information (SCI).

Supplement 17. The method according to Supplement 14 or 15, wherein the priority levels indicated by the side link control information (SCI) corresponding to the at least two side link resources are the same and the types are all the same. In the case of the second type of resources, the priorities of the at least two side link resources are determined according to the corresponding signal strengths (RSRP/RSSI).

Supplementary Note 18. The method according to Supplementary Note 14 or 15, wherein, in the case that the types of at least two side link resources are the second type of resources, the priority of the at least two side link resources The level is determined according to the corresponding signal strength (RSRP/RSSI).

Supplement 19. The method according to Supplement 14 or 15, wherein the signal strengths (RSRP/RSSI) corresponding to the at least two side link resources are the same, and the types are both of the second type of resources In this case, the priorities of the at least two side link resources are determined according to the priorities indicated by the corresponding side link control information (SCI).

Supplement 20. The method according to any one of Supplementary Notes 15 to 19, wherein the higher the priority indicated by the side link control information (SCI) is, the higher the priority of the side link resource is.

Supplement 21. The method according to any one of Supplementary Notes 17 to 19, wherein the higher the signal strength (RSRP/RSSI), the higher the priority of the side link resource.

Supplement 22. The method according to Supplement 5, wherein the types of the side link resources include at least one of the following: the first type of resources are transmission resources and/or reception resources, and the second type of resources are interference resources;

Supplementary Note 23. The method according to Supplementary Note 22, wherein, in the case that the types of at least two side link resources are the resources of the second type, the priorities of the at least two side link resources are based on: The priority indicated by the corresponding side link control information (SCI) is determined.

Supplement 24. The method according to Supplement 22, wherein the priority levels indicated by the side link control information (SCI) corresponding to the at least two side link resources are the same, and the types are the same as the first In the case of the second type of resources, the priorities of the at least two side link resources are determined according to the corresponding signal strengths (RSRP/RSSI).

Supplementary Note 25. The method according to any one of Supplementary Notes 22 to 24, wherein, in the case that the types of the at least two sidelink resources are the resources of the first type, the at least two sidelink resources are The priority of the resource is determined according to the priority indicated by the corresponding side link control information (SCI).

Supplement 26. The method according to any one of Supplementary Notes 22 to 24, wherein the priority indicated by the side link control information (SCI) corresponding to the at least two side link resources is the same and the type is the same In the case that they are all resources of the first type, the priorities of the at least two side link resources are determined in an order in which the priorities of the transmission resources are greater than the priorities of the reception resources.

Supplementary Note 27. The method according to any one of Supplementary Notes 22 to 24, wherein the priority indicated by the side link control information (SCI) corresponding to the at least two side link resources is the same and the type is the same. In the case that the resources of the first type are the receiving resources, the priorities of the at least two side link resources are determined according to the corresponding signal strengths (RSRP/RSSI).

Supplement 28. The method according to any one of Supplementary Notes 23 to 27, wherein the higher the priority indicated by the side link control information (SCI), the higher the priority of the side link resource.

Supplementary note 29. The method according to any one of supplementary notes 24 to 27, wherein the higher the signal strength (RSRP/RSSI) is, the higher the priority of the side link resource.

Supplement 30. The method according to Supplement 5, wherein the priority of the side link resource is determined according to the priority indicated by the corresponding side link control information (SCI).

Supplementary Note 31. The method according to Supplementary Note 30, wherein, in the case that the priorities indicated by the sidelink control information (SCI) corresponding to the at least two sidelink resources are the same, the at least two sidelink resources have the same priority. The priorities of the side link resources are determined in an order in which the priorities of the transmission resources are greater than the priorities of the reception resources and/or the interference resources.

Supplement 32. The method according to Supplement 30 or 31, wherein the priorities indicated by the side link control information (SCI) corresponding to the at least two side link resources are the same, and neither is the In the case of sending resources, the priorities of the at least two side link resources are determined according to the corresponding signal strengths (RSRP/RSSI).

Supplement 33. The method according to any one of Supplements 30 to 32, wherein the higher the priority indicated by the side link control information (SCI), the higher the priority of the side link resource.

Supplement 34. The method according to Supplement 32, wherein the higher the signal strength (RSRP/RSSI), the higher the priority of the side link resource.

Supplement 35. The method according to any one of Supplementary Notes 5 to 34, wherein the triggering conditions corresponding to the side link resources include: triggered by an event to report; not triggered by an event to be reported;

The priority of the side link resource triggered by the event to be reported is greater than the priority of the side link resource not triggered by the event to be reported.

Supplement 36. The method according to any one of Supplements 5 to 35, wherein the side link resources included in the auxiliary information are resources that are not recommended by the first terminal device to be used by the second terminal device.

Supplement 37. The method according to Supplement 3, wherein the first terminal device selects N side chains with the lowest priority from the M side link resources in order of priority from low to high road resources.

Supplement 38. The method according to Supplement 37, wherein the priorities of the M side link resources are determined according to the signal strength (RSRP/RSSI) corresponding to the side link resources.

Supplement 39. The method according to Supplement 38, wherein the higher the signal strength (RSRP/RSSI), the higher the priority of the side link resource.

Supplement 40. The method according to Supplement 38, wherein, when the signal strengths (RSRP/RSSI) corresponding to the at least two side link resources are the same, the priority of the at least two side link resources It is determined according to the priority indicated by the corresponding side link control information (SCI).

Supplement 41. The method according to Supplement 40, wherein the higher the priority indicated by the side link control information (SCI), the higher the priority of the side link resource.

Supplement 42. The method according to Supplement 38, wherein the unreserved side link resources are determined to have the lowest corresponding signal strengths (RSRP/RSSI).

Supplement 43. The method according to any one of Supplements 37 to 42, wherein the side link resources included in the auxiliary information are resources recommended by the first terminal device to be used by the second terminal device.

Supplement 44. The method according to any one of Supplementary Notes 1 to 43, wherein the priority indicated by the side link control information (SCI) corresponding to the auxiliary information is equal to all resources carried by the auxiliary information The highest priority among the priorities indicated by the corresponding side link control information (SCI).

Note 45. A method for reporting resources, comprising:

The first terminal device determines auxiliary information for reporting to the second terminal device; and

sending, by the first terminal device, the auxiliary information to the second terminal device;

The priority indicated by the side link control information (SCI) corresponding to the auxiliary information is equal to the highest priority among the priorities indicated by the side link control information (SCI) corresponding to all resources carried by the auxiliary information priority.

Supplement 46. A resource selection method, comprising:

Supplement 47. The method according to any one of Supplements 1 to 46, wherein the auxiliary information at least includes resource information or a resource set.

Supplement 48. A terminal device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to realize the resource according to any one of Supplementary Notes 1 to 45 The reporting method, or is configured to execute the computer program to implement the resource selection method described in Supplementary Note 46.

Claims

A resource reporting device, comprising:

a determining unit, which determines M side link resources for reporting to the second terminal device;

a selection unit that selects N side link resources from the M side link resources to generate auxiliary information; wherein N and M are both positive integers and N is less than M; and

a sending unit, which sends the auxiliary information to the second terminal device.
The apparatus according to claim 1, wherein the M side link resources include at least one of the following: a sending resource used by the first terminal device to send side link information, a use resource perceived by the first terminal device Receiving resources for receiving side link information, and interference resources perceived by the first terminal device.
The apparatus of claim 1, wherein the selecting unit selects the N side link resources from the M side link resources randomly or according to a priority;

The priority is determined according to at least one of the following information: the priority indicated by the side link control information corresponding to the side link resource, the signal strength corresponding to the side link resource, the side link Types of road resources and trigger conditions corresponding to the side link resources.
The apparatus according to claim 3, wherein the selection unit selects N side link resources with the highest priority from the M side link resources in order of priority from high to low; the auxiliary The side link resources included in the information are resources that are not recommended by the first terminal device to be used by the second terminal device.
The apparatus according to claim 4, wherein the types of the side link resources include at least one of the following: the first type of resources is transmission resources, the second type of resources is reception resources, and the third type of resources is interference resources; The priority of the first type of resources is higher than the priority of the second type of resources, and the priority of the second type of resources is higher than the priority of the third type of resources.
The apparatus according to claim 5, wherein, when the types of the at least two side link resources are the first type of resources, the priorities of the at least two side link resources are based on the corresponding edge determining the priority indicated by the link control information; wherein, the higher the priority indicated by the side link control information, the higher the priority of the side link resource; and/or

When the types of at least two side link resources are both the second type resource or the third type resource, the priority of the at least two side link resources is based on the corresponding side link control information the indicated priority determination; and/or

In the case where the priorities indicated by the side link control information corresponding to at least two side link resources are the same, and the types are both the second type of resources or the third type of resources, the at least two side link resources The priority of the link resource is determined according to the corresponding signal strength; wherein, the higher the signal strength, the higher the priority of the side link resource.
The apparatus according to claim 5, wherein in the case that the types of at least two side link resources are the second type of resources or the third type of resources, the at least two side link resources The priority is determined according to the corresponding signal strength; wherein, the higher the signal strength, the higher the priority of the side link resource; and/or

In the case that the signal strengths corresponding to at least two side link resources are the same and the types are the second type resource or the third type resource, the priority of the at least two side link resources is based on the The priority indicated by the corresponding side link control information is determined.
The apparatus according to claim 4, wherein the types of the side link resources include at least one of the following: a first type of resources, namely transmission resources, a second type of resources, namely reception resources and/or interference resources; the first type of resources The priority of the class resource is greater than the priority of the second class resource.
The apparatus according to claim 8, wherein, when the types of the at least two side link resources are the first type of resources, the priorities of the at least two side link resources are based on the corresponding edge determining the priority indicated by the link control information; wherein, the higher the priority indicated by the side link control information, the higher the priority of the side link resource; and/or

In the case that the types of at least two side link resources are the resources of the second type, the priorities of the at least two side link resources are determined according to the priorities indicated by the corresponding side link control information; and / or

In the case where the priorities indicated by the side link control information corresponding to the at least two side link resources are the same and the types are the second type of resources, the priorities of the at least two side link resources are based on The corresponding signal strength is determined; wherein, the higher the signal strength, the higher the priority of the side link resource.
The apparatus according to claim 8, wherein, when the types of the at least two side link resources are the second type of resources, the priorities of the at least two side link resources are based on the corresponding signals Strength determination; wherein, the higher the signal strength, the higher the priority of the side link resource; and/or

When the signal strengths corresponding to the at least two side link resources are the same and the types are the second type of resources, the priorities of the at least two side link resources are based on the corresponding side link control information. The indicated priority is determined.
The apparatus according to claim 4, wherein the types of the side link resources include at least one of the following: a first type of resources, namely transmission resources and/or reception resources, and a second type of resources, namely interference resources; the first type of resources The priority of the class resource is greater than the priority of the second class resource.
The apparatus according to claim 11, wherein, when the types of the at least two side link resources are the resources of the second type, the priorities of the at least two side link resources are based on the corresponding edge determining the priority indicated by the link control information; wherein, the higher the priority indicated by the side link control information, the higher the priority of the side link resource; and/or

In the case where the priorities indicated by the side link control information corresponding to the at least two side link resources are the same and the types are the second type of resources, the priorities of the at least two side link resources are based on The corresponding signal strength is determined; the higher the signal strength, the higher the priority of the side link resource.
The apparatus according to claim 11, wherein, when the types of the at least two side link resources are the first type of resources, the priorities of the at least two side link resources are based on the corresponding edge determining the priority indicated by the link control information; wherein, the higher the priority indicated by the side link control information, the higher the priority of the side link resource; and/or

In the case where the priorities indicated by the side link control information corresponding to at least two side link resources are the same and the types are the first type of resources, the priorities of the at least two side link resources are based on The priority of the sending resource is higher than the priority of the receiving resource is determined in order; and/or

In the case where the priorities indicated by the side link control information corresponding to the at least two side link resources are the same, the types are the first type of resources, and both are the receiving resources, the at least two side link resources The priority of the path resource is determined according to the corresponding signal strength; the higher the signal strength, the higher the priority of the side link resource.
The apparatus according to claim 4, wherein the priority of the side link resources is determined according to the priority indicated by the corresponding side link control information; the higher the priority indicated by the side link control information, the higher the priority. The priority of the edge link resource is higher.
The apparatus according to claim 14, wherein in the case where the priorities indicated by the side link control information corresponding to the at least two side link resources are the same, the priorities of the at least two side link resources are based on The priority of the transmit resource is higher than the priority of the receive resource and/or the priority of the interfering resource is determined in order; and/or

In the case where the priorities indicated by the side link control information corresponding to at least two side link resources are the same and neither is the sending resource, the priorities of the at least two side link resources are based on the corresponding priorities. The signal strength is determined; wherein, the higher the signal strength, the higher the priority of the side link resource.
The apparatus according to claim 4, wherein the trigger conditions corresponding to the side link resources include: triggered by an event to report; not triggered by an event to report; and the priority of the side link resources triggered by an event to be reported is greater than The priority of the side link resources that are not reported by an event trigger.
The apparatus according to claim 3, wherein the selection unit selects N side link resources with the lowest priority from the M side link resources in order of priority from low to high; the auxiliary The side link resources included in the information are resources recommended by the first terminal device to be used by the second terminal device.
The apparatus according to claim 17, wherein the priorities of the M side link resources are determined according to the signal strengths corresponding to the side link resources; the higher the priority of the resource; and/or

When the signal strengths corresponding to at least two side link resources are the same, the priorities of the at least two side link resources are determined according to the priorities indicated by the corresponding side link control information; wherein the The higher the priority indicated by the side link control information, the higher the priority of the side link resource.
A resource selection device, comprising:

a receiving unit, which receives the auxiliary information sent by the first terminal device, the auxiliary information is generated by the first terminal device selecting N side link resources from the M side link resources; wherein N and M are both positive an integer and N is less than M; and

and a selection unit, which performs side link resource selection according to the auxiliary information.
A communication system comprising:

a first terminal device, which determines M side link resources for reporting; selects N side link resources from the M side link resources to generate auxiliary information; wherein N and M are both positive integers and N less than M; and

The second terminal device receives the auxiliary information, and performs sidelink resource selection according to the auxiliary information.