WO2022161018A1

WO2022161018A1 - Assistance device determination method and apparatus, electronic device, and storage medium

Info

Publication number: WO2022161018A1
Application number: PCT/CN2021/139571
Authority: WO
Inventors: 陈咪咪
Original assignee: 展讯通信（上海）有限公司
Priority date: 2021-01-27
Filing date: 2021-12-20
Publication date: 2022-08-04
Also published as: CN114827957A

Abstract

Embodiments of the present application provide an assistance device determination method and apparatus, an electronic device, and a storage medium. The technical solution provided in the embodiments of the present application comprises: receiving control information, the control information comprising assistance ability information; and determining an assistance device according to the assistance ability information, the assistance device being configured to assist sidelink (SL) communication. By means of the present application, collision problems can be reduced, and the transmission reliability of an assistance communication system can be improved.

Description

A determination method, device, electronic device and storage medium for auxiliary equipment

technical field

The present application relates to the field of communication technologies, and in particular, to a method, apparatus, electronic device, and storage medium for determining auxiliary equipment.

Background technique

Under the resource allocation mode (mode) 2 mechanism of vehicle wireless communication technology (vehicle to everything, referred to as: V2X) communication, the sending user equipment (User Equipment, referred to as: UE) selects resources through perception to complete the workshop (vehicle to Vehicle, referred to as: V2V) communication, because the sending UE is difficult to know the situation on the receiving UE side in the process of perceiving and selecting resources, and lack of centralized resource scheduling, collision problems such as hidden nodes and half-duplex problems may occur. resulting in lower transmission reliability.

Application content

In view of this, embodiments of the present application provide a method, apparatus, electronic device, and storage medium for determining an auxiliary device, which can reduce the collision problem and improve the transmission reliability of the auxiliary communication system.

On the one hand, an embodiment of the present application provides a method for determining an auxiliary device, the method comprising:

receiving control information, the control information including auxiliary capability information;

According to the auxiliary capability information, an auxiliary device is determined, and the auxiliary device is used for auxiliary side link SL communication.

Optionally, the auxiliary capability information is used to indicate that the sending device of the control information supports auxiliary SL communication; according to the auxiliary capability information, determining the auxiliary device includes:

According to the auxiliary capability information, it is determined that the sending device of the control information is an auxiliary device for assisting its own SL communication.

Optionally, the method further includes:

Send an SL communication assistance request to the auxiliary device.

Optionally, the auxiliary capability information includes at least one of the following information:

Area identification code, source identification code or indication information; the indication information is used to indicate the device capability of assisting SL communication.

Optionally, the control information is first-order side link control information.

Optionally, the format of the first-order side link control information is format 1-A.

Optionally, the control information includes auxiliary capability information, including:

The first-order side link side link control information includes an indication information field, and the indication information field is used to indicate the device capability of assisting SL communication.

Optionally, the format of the first-order side link control information is predefined.

The first-order side link control information includes the area identification code field, and the area identification code field includes the area identification code.

Optionally, determining the auxiliary device according to the auxiliary capability information, including:

Determine the distance between itself and the sending device of control information according to its own location and area identification code;

If the distance between itself and the sending device is less than or equal to the first threshold, it is determined that the sending device of the control information is an auxiliary device for assisting its own SL communication.

Optionally, the control information is second-order side link control information.

Optionally, the format of the second-order side link control information is format 2-A.

The second-order side link control information includes a target identification code field, and the target identification code field includes a target identification code, and the target identification code is used to indicate the device capability of assisting SL communication.

If the device capability of the auxiliary SL communication is used to indicate that the sending device of the control information supports the auxiliary SL communication, determine the distance between itself and the sending device of the control information;

If the distance between itself and the sending device of the control information is less than or equal to the second threshold, it is determined that the sending device of the control information is an auxiliary device for assisting its own SL communication.

Optionally, determine the distance between itself and the sending device of the control information, including:

Determine the distance between itself and the sending device of the control information according to its own location and the area identification code, wherein the area identification code is received from the physical side link shared channel PSSCH.

Optionally, the format of the second-order side link control information is format 2-B.

If the distance between itself and the sending device of the control information is less than or equal to the third threshold, it is determined that the sending device of the control information is an auxiliary device for assisting its own SL communication.

Optionally, the format of the second-order side link control information is predefined.

Optionally, the second-order side link control information includes a region identification code field and/or a target identification code field, the region identification code field includes a region identification code, and the target identification code field includes a target identification code.

On the other hand, an embodiment of the present application provides a device for determining auxiliary equipment, including:

a receiving unit, configured to receive control information, where the control information includes auxiliary capability information;

The determining unit is configured to determine an auxiliary device according to the auxiliary capability information, and the auxiliary device is used to assist the side link SL communication.

On the other hand, an embodiment of the present application provides a storage medium, where the storage medium includes a stored program, wherein when the program runs, a device where the storage medium is located is controlled to execute the above-mentioned method for determining an auxiliary device.

On the other hand, an embodiment of the present application provides an electronic device, including a memory and a processor, where the memory is used for storing information including program instructions, and the processor is used for controlling the execution of the program instructions, wherein the When the program instructions are loaded and executed by the processor, the above-mentioned method for determining the auxiliary device is implemented.

In the solution of the embodiment of the present application, the control information is received, and the control information includes the auxiliary capability information; the auxiliary device is determined according to the auxiliary capability information, and the auxiliary device is used for the auxiliary side link SL communication, which can reduce the collision problem and improve the transmission of the auxiliary communication system. reliability.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a flowchart of a method for determining an auxiliary device provided by an embodiment of the present application;

2 is a flowchart of another method for determining an auxiliary device provided by an embodiment of the present application;

3 is a flowchart of another method for determining an auxiliary device provided by an embodiment of the present application;

4 is a flowchart of another method for determining an auxiliary device provided by an embodiment of the present application;

5 is a flowchart of another method for determining an auxiliary device provided by an embodiment of the present application;

FIG. 6 is a flowchart of another method for determining an auxiliary device provided by an embodiment of the present application

7 is a flowchart of another method for determining an auxiliary device provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a device for determining an auxiliary device according to an embodiment of the present application;

FIG. 9 is a schematic diagram of an electronic device according to an embodiment of the present application.

Detailed ways

In order to better understand the technical solutions of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

It should be clear that the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. As used in the embodiments of this application and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

It should be understood that the term "and/or" used in this document is only an association relationship to describe the associated objects, indicating that there may be three kinds of relationships, for example, A and/or B, which may indicate that A exists alone, and A and B exist at the same time. B, there are three cases of B alone. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

It should be understood that although the terms first, second, etc. may be used to describe the set thresholds in the embodiments of the present application, these set thresholds should not be limited to these terms. These terms are only used to distinguish set thresholds from one another. For example, without departing from the scope of the embodiments of the present application, the first set threshold may also be referred to as the second set threshold, and similarly, the second set threshold may also be referred to as the first set threshold.

The UE working in mode 2 is always doing resource sensing. When the data packet arrives, the UE will randomly select this transmission and subsequent multiple transmissions from the candidate resources according to the candidate resources sensed within a period of time before the data packet arrives. resources, and reserve resources for subsequent retransmissions or periodic transmissions in the control information (SCI) of the first transmission. Thus, the direct communication between the transmitting user equipment (TX UE) and the receiving user equipment (RX UE) is completed. Therefore, the way of cooperative communication between UEs can be used as an enhancement of mode 2, that is, the TX UE completes V2X communication with the assistance of the auxiliary UE, and the auxiliary UE can be either an RX UE or a non-local communication link. UE. FIG. 1 is a schematic structural diagram of a system for determining an auxiliary device provided by an embodiment of the present application. As shown in FIG. 1 , the system includes a TX UE 1, an auxiliary UE 2, and an RX UE 3. Among them, the TX UE 1 is in communication connection with the auxiliary UE 2 and the RX UE 3, respectively. In the embodiment of the present application, the TX UE 1 is a receiving device of the control information, and the auxiliary UE 2 is a transmitting device of the control information.

The TX UE 1 is used to receive the SCI, and the SCI includes the auxiliary capability information; it is also used to determine the auxiliary UE 2 according to the auxiliary capability information, and the auxiliary UE 2 is used for auxiliary side link (SideLink, abbreviated: SL) communication.

In order to ensure that the auxiliary information provided by the auxiliary UE 2 is of higher value, the TX UE 1 is also used to send an SL communication auxiliary request to the auxiliary UE 2, and the SL communication auxiliary request carries the information about the TX UE 1 to help the auxiliary UE 2 determine the auxiliary information ; TX UE 1 communicates with RX UE 3 according to the auxiliary information.

In the technical solution provided by the embodiment of the present application, the control information is received, and the control information includes the auxiliary capability information; the auxiliary device is determined according to the auxiliary capability information, and the auxiliary device is used for auxiliary side link SL communication, which can reduce the collision problem and improve the auxiliary communication system. transmission reliability.

FIG. 2 is a flowchart of a method for determining an auxiliary device provided by an embodiment of the present application. As shown in FIG. 2 , the method includes:

Step 101: The first device receives the SCI of the second device, where the SCI includes auxiliary capability information.

In this embodiment of the present application, the first device is an SCI receiving device, and the second device is an SCI sending device.

Step 102: The first device determines an auxiliary device according to the auxiliary capability information, and the auxiliary device is used to assist the side link SL communication.

In the embodiment of this application, the auxiliary capability information is used to indicate that the SCI sending device supports auxiliary SL communication or does not support auxiliary SL communication. If the auxiliary capability information indicates that the SCI sending device supports auxiliary SL communication, it indicates that the SCI sending device has auxiliary SL communication. If the auxiliary capability information indicates that the SCI sending device does not support auxiliary SL communication, it indicates that the SCI sending device does not have the auxiliary SL communication capability.

Specifically, if the auxiliary capability information indicates that the sending device of the SCI supports auxiliary SL communication, according to the auxiliary capability information, it is determined that the sending device of the SCI is an auxiliary device for assisting its own SL communication.

FIG. 3 is a flowchart of another method for determining an auxiliary device provided by an embodiment of the present application. As shown in FIG. 3 , the method includes:

Step 201: The first device receives the SCI of the second device, the SCI includes auxiliary capability information, the SCI is first-order side link control information ( ^1st stage SCI), and the ^1st stage SCI may have the first format.

In this embodiment of the present application, each step is performed by the first device. The first device is the receiving device of the SCI, and the second device is the sending device of the SCI.

Specifically, the first device is always detecting the SCI sent by the second device except when the data is sent, so that the first device can acquire the SCI of the second device in real time. In the embodiment of the present application, the first device may also receive the SCI sent by the second device in other manners, and the embodiment of the present application does not limit the receiving manner of the SCI.

In this embodiment of the present application, the auxiliary capability information includes one of a zone identification code (Zone ID), a source identification code (Source ID), and indication information, or any combination thereof. Among them, the indication information is used to indicate the device capability of assisting SL communication; the Zone ID is used to indicate the location of other devices; the Source ID is used to indicate other devices.

For example, the first format is format 1-A, and the first-order side link control information (SCI format 1-A) with the first format is shown in Table 1.

Table 1

Wherein, the SCI format 1-A includes a priority indication field (Priority) with a size of 3 bits (bits); a frequency domain resource indication field (Frequency resource assignment); a time domain resource indication field (Time resource assignment) with a size of 5 bits; Resource reservation period indicating field (Resource reservation period), the size is

bits, where N _{rsv_period} is the number of possible values of the resource reservation period; the demodulation reference signal information indication field (DMRS pattern) has a size of

bits, where N _pattern is the total number of optional DMRS patterns; the second-order side link control information format field (2nd-stage SCI format), with a size of 2 bits, can indicate up to 4 formats (format); parameter indication field (Beta_offset indicator), the size is 2bits; the demodulation reference signal port number field (Number of DMRS port), the size is 1bits; the modulation and coding strategy field (Modulation and coding scheme), the size is 5bits; additional modulation and coding strategy table indication (Additional MCS table indicator), the size is 0/1/2 bits; the feedback channel overhead indication (PSFCH overhead indication), the size is 1 bit; the reserved bit field (Reserved), in this embodiment, the reserved bit field is used as the indication information field, the size is 1 bit, the indication information field includes the first information or the second information, and the indication information field is used to indicate the device capability of assisting SL communication. For example: the first information is symbol 1 or bit value 1, which is used to indicate that the device capability of auxiliary SL communication is to support auxiliary SL communication; the second information is symbol 0 or bit value 0, which is used to indicate that the device capability of auxiliary SL communication is not capable of supporting auxiliary SL communication. Auxiliary SL communication is supported.

Among them, the specific instructions of the 2nd-stage SCI format shown in Table 1 are shown in Table 2:

Table 2

域值(Value of 2nd-stage SCI format field)Value of 2nd-stage SCI format field	2nd-stage SCI format2nd-stage SCI format
0000	SCI format 2-ASCI format 2-A
0101	SCI format 2-BSCI format 2-B
1010	Reserved Reserved
1111	ReservedReserved

When the field value of 2nd-stage SCI format is 00, it means that the 2nd-stage SCI format is SCI format 2-A; when the field value of 2nd-stage SCI format is 01, it means that the 2nd-stage SCI format is SCI format 2- B; When the field value of the 2nd-stage SCI format is 10, it means that the 2nd-stage SCI format is a reserved bit (Reserved), which can be set according to the actual situation; when the field value of the 2nd-stage SCI format is 11, it means that the 2nd-stage SCI format is reserved. -stage SCI format is Reserved, which can be set according to the actual situation.

Step 202: The first device determines whether the indication information is the first information, if yes, executes step 203; if not, executes step 201.

In this embodiment of the present application, the first device is a receiving device of the SCI.

In this embodiment of the present application, the first information may be set according to the actual situation. As an optional solution, if the first information is symbol 1 or bit value 1, it indicates that the sending device of SCI supports auxiliary SL communication, and proceeds to step 203; the second information is symbol 0 or bit value 0, indicating that the sending device of SCI If auxiliary SL communication is not supported, go to step 201.

Step 203: The first device determines the second device as an auxiliary device for assisting its own SL communication. .

In this embodiment of the present application, if there is a second device that supports auxiliary SL communication, the first device determines the second device as an auxiliary device. If there are multiple second devices supporting auxiliary SL communication, all of the multiple second devices supporting auxiliary SL communication are determined as auxiliary devices.

Step 204: The first device sends an SL communication assistance request to the auxiliary device.

In this embodiment of the present application, the first device sends an SL communication assistance request to the auxiliary device, so as to request the auxiliary device to provide auxiliary information for the first device.

In the technical solution of the method for determining auxiliary equipment provided by the embodiments of the present application, control information is received, and the control information includes auxiliary capability information; auxiliary equipment is determined according to the auxiliary capability information, and the auxiliary equipment is used for auxiliary side link SL communication, which can reduce collisions problem and improve the transmission reliability of the auxiliary communication system.

FIG. 4 is a flowchart of another method for determining an auxiliary device provided by an embodiment of the present application. As shown in FIG. 4 , the method includes:

Step 301: The first device receives the SCI of the second device, the SCI includes auxiliary capability information, the SCI is a 1 ^st stage SCI, and the format of the 1 ^st stage SCI is predefined.

In this embodiment of the present application, the format of the 1 ^st stage SCI is a defined new format.

In the embodiment of this application, the auxiliary capability information includes one or any combination of Zone ID, Source ID, and indication information, and the indication information is used to indicate the device capability of the auxiliary SL communication; the Zone ID is used to indicate the location of other devices; the Source ID Used to indicate other devices.

In this embodiment of the present application, the first-order side link control information (New 1 ^st stage SCI format) having a defined new format includes a Zone ID field and/or a Source ID field. The Zone ID field includes the Zone ID; the Source ID field includes the Source ID.

It is worth noting that if the New 1 ^st stage SCI format includes the Zone ID field, the Zone ID can also be used to indicate the device capability of the auxiliary SL communication. When the device capability of the auxiliary SL communication indicates that the auxiliary SL communication is supported, the auxiliary device is determined to be the SCI. When the device capability of the auxiliary SL communication indicates that the auxiliary SL communication is not supported, the auxiliary device is not the sending device of the SCI.

Step 302: The first device determines the distance between itself and the sending device of the SCI according to its own location and Zone ID.

In this embodiment of the present application, the first device may calculate the longitude position and latitude position of the second device by using the following formula to generate a Zone ID. Wherein, the second device is the sending device of the SCI.

x ₁ = Floor(x/L) Mod 64 (1)

y ₁ = Floor(y/L) Mod 64 (2)

Zone ID=y ₁ *64+x ₁ (3)

Among them, x is the longitude distance between the current location of the SCI sending device and the geographic coordinates (0,0) of the WGS84 model, in meters; y is the current location of the SCI sending device and the geographic coordinates (0,0) of the WGS84 model. The latitude distance between them, in meters; L is the parameter configured by the high-level; x ₁ is the first intermediate parameter; y ₁ is the second intermediate parameter.

In the embodiment of the present application, the location and the Zone ID of the first device itself may be calculated by various methods to generate the distance between the first device and the sending device of the SCI, which is not limited in the embodiment of the present application. As an optional solution, the position and the Zone ID of the first device itself are calculated by the PostGIS algorithm to generate the distance between the first device and the sending device of the SCI.

Step 303: The first device judges whether the distance between itself and the sending device of the SCI is less than or equal to the first threshold, if so, go to step 304; if not, go to step 301.

As an optional solution, the first threshold is Communication range requirement. Communication range requirement can be configured by Radio Resource Control (RRC) parameters, indicating that good transmission can be maintained between UEs. As an optional solution, the Communication range requirement is 20 meters, 50 meters, 80 meters, 100 meters, 120 meters, 150 meters, 180 meters, 200 meters, 220 meters, 250 meters, 270 meters, 300 meters , 350m, 370m, 400m, 420m, 450m, 480m, 500m, 550m, 600m, 700m or 1000m.

In the embodiment of the present application, if the distance between itself and the sending device of the SCI is less than or equal to the first threshold, it indicates that the distance between itself and the sending device of the SCI meets the communication range requirement that can maintain good transmission, and proceed to step 304; If the distance between itself and the SCI sending device is greater than the first threshold, it indicates that the distance between itself and the SCI sending device cannot maintain good transmission, and the SCI sending device is not suitable as an auxiliary device of the first device, and the steps are continued. 301.

Step 304: The first device determines that the sending device of the SCI is an auxiliary device for assisting its own SL communication.

In this embodiment of the present application, if the location of the SCI sending device can maintain good transmission with the first device, the SCI sending device is determined as an auxiliary device. If the positions of the sending devices of multiple SCIs can maintain good transmission with the first device, the sending devices of the multiple SCIs are all determined as auxiliary devices.

Step 305: The first device sends an SL communication assistance request to the auxiliary device.

FIG. 5 is a flowchart of another method for determining an auxiliary device provided by an embodiment of the present application. As shown in FIG. 5 , the method includes:

Step 401: The first device receives the SCI of the second device, the SCI includes auxiliary capability information, the SCI is second-order side link control information (2 ^nd stage SCI), and the 2 ^nd stage SCI may have a second format.

In this embodiment of the present application, the auxiliary capability information includes one of a zone identification code (Zone ID), a source identification code (Source ID), and indication information, or any combination thereof. Wherein, the indication information is used to indicate the device capability of the auxiliary SL communication; the Zone ID is used to indicate the location of the sending device of the SCI; the Source ID is used to indicate the sending device of the SCI.

For example, the second format is format 2-A, and the second-order side link control information (SCI format 2-A) with the second format is shown in Table 3.

table 3

Among them, SCI format 2-A includes: hybrid automatic repeat request process number field (HARQ process number), the size is

bits, where N _process is the total number of HARQ processes; the new data indicator field (New data indicator), the size is 1 bit; the redundancy version (Redundancy version), the size is 2 bits; the source identification code field (Source ID), used to indicate the source Identification code, the size is 8bits; the destination identification code field (Destination ID), the Destination ID field includes the Destination ID, the Destination ID is used to indicate the device capability of the auxiliary SL communication, the size is 16bits; the hybrid automatic repeat request feedback indication (HARQ feedback enabled /disabled indicator), the size is 1bit; the transmission type indicator (Cast type indicator), the transmission type indicator includes: unicast (unicast), multicast (groupcast) and broadcast (Broadcast), the size is 2 bits; channel state information request (CSI) request), the size is 2bits.

Step 402: The first device determines whether the device capability of the auxiliary SL communication indicated by the Destination ID is that the sending device of the SCI supports the auxiliary SL communication, and if so, executes step 403; if not, executes step 401.

In the embodiment of the present application, if the device capability of the auxiliary SL communication indicated by the Destination ID is that the sending device of the SCI supports the auxiliary SL communication, it indicates that the sending device of the SCI supports the auxiliary SL communication, and proceeds to step 403; if not, it indicates that the sending device of the SCI supports the auxiliary SL communication If the device does not support auxiliary SL communication and cannot be used as an auxiliary device, step 401 is continued.

Step 403: The first device obtains the Zone ID from the Physical Sidelink Shared Channel (Physical Sidelink Shared Channel, PSSCH for short) corresponding to the SCI format 2-A.

In this embodiment of the present application, the PSSCH is used to carry the Zone ID. In the embodiment of the present application, the first device may also obtain the Zone ID in other ways, which is not limited in the embodiment of the present application.

As an optional solution, the first device can calculate the longitude position and latitude position of the sending device of the SCI by using the following formula to generate the Zone ID.

x ₁ = Floor(x/L) Mod 64 (1)

y ₁ = Floor(y/L) Mod 64 (2)

Zone ID=y ₁ *64+x ₁ (3)

Step 404: The first device determines the distance between itself and the sending device of the SCI according to its own location and Zone ID.

In this embodiment of the present application, step 404 is the same as step 302, and details are not repeated here.

Step 405: The first device determines whether the distance between itself and the sending device of the SCI is less than or equal to the second threshold, if so, go to Step 406; if not, go to Step 401.

As an optional solution, the second threshold is Communication range requirement. Communication range requirement can be configured by Radio Resource Control (RRC) parameters, indicating that good transmission can be maintained between UEs. As an optional solution, the Communication range requirement is 20 meters, 50 meters, 80 meters, 100 meters, 120 meters, 150 meters, 180 meters, 200 meters, 220 meters, 250 meters, 270 meters, 300 meters , 350m, 370m, 400m, 420m, 450m, 480m, 500m, 550m, 600m, 700m or 1000m.

In this embodiment of the present application, if the distance between itself and the sending device of the SCI is less than or equal to the second threshold, it indicates that the distance between itself and the sending device of the SCI meets the communication range requirement that can maintain good transmission, and proceeds to step 406; If the distance between itself and the SCI sending device is greater than the second threshold, it indicates that the distance between itself and the SCI sending device cannot maintain good transmission, and the SCI sending device is not suitable as an auxiliary device of the first device, and the steps are continued. 401.

Step 406: The first device determines that the sending device of the SCI is an auxiliary device for assisting its own SL communication.

In this embodiment of the present application, step 406 is the same as step 304, and details are not repeated here.

Step 407: The first device sends an SL communication assistance request to the auxiliary device.

In this embodiment of the present application, the first device sends a request for auxiliary information to the auxiliary device identified by the Destination ID, so as to request the auxiliary device to provide auxiliary information for the first device.

In the technical solution of the method for determining auxiliary equipment provided by the embodiment of the present application, the control information includes auxiliary capability information; the auxiliary equipment is determined according to the auxiliary capability information, and the auxiliary equipment is used for auxiliary side link SL communication, which can reduce the collision problem , to improve the transmission reliability of the auxiliary communication system.

FIG. 6 is a flowchart of another method for determining an auxiliary device provided by an embodiment of the present application. As shown in FIG. 6 , the method includes:

Step 501: The first device receives the SCI of the second device, the SCI includes auxiliary capability information, the SCI is a 2 ^nd stage SCI, and the 2 ^nd stage SCI has a third format.

In the embodiment of this application, the auxiliary capability information includes one or any combination of Zone ID, Source ID and indication information, and the indication information is used to indicate the device capability of auxiliary SL communication; Zone ID is used to indicate the location of the sending device of the SCI; Source ID is used to indicate the sending device of the SCI.

For example, the third format is format 2-B, and the second-order side link control information (SCI format 2-B) with the third format is shown in Table 4.

Table 4

Among them, SCI format 2-B includes: hybrid automatic repeat request process number field (HARQ process number), the size is

bits, where N _process is the total number of HARQ processes; the new data indicator field (New data indicator), the size is 1 bit; the redundancy version (Redundancy version), the size is 2 bits; the source identification code field (Source ID), used to indicate the source Identification code, the size is 8bits; the destination identification code field (Destination ID), the Destination ID field includes the Destination ID, the Destination ID is used to indicate the device capability of the auxiliary SL communication, the size is 16bits; the hybrid automatic repeat request feedback indication (HARQ feedback enabled /disabled indicator), the size is 1bit; the zone ID field, the Zone ID field includes the Zone ID, the Zone ID is used to indicate the zone identification code, and the size is 12bits; the communication range requirement, the size is 4bits.

Step 502: The first device determines the distance between itself and the sending device of the SCI according to its own location and Zone ID.

In this embodiment of the present application, step 502 is the same as step 404, and details are not described herein again.

Step 503, the first device judges whether the distance between itself and the sending device of the SCI is less than or equal to the third threshold, if so, go to step 504; if not, go to step 501.

As an optional solution, the third threshold is Communication range requirement. Communication range requirement can be configured by Radio Resource Control (RRC) parameters, indicating that good transmission can be maintained between UEs. As an optional solution, the Communication range requirement is 20 meters, 50 meters, 80 meters, 100 meters, 120 meters, 150 meters, 180 meters, 200 meters, 220 meters, 250 meters, 270 meters, 300 meters , 350m, 370m, 400m, 420m, 450m, 480m, 500m, 550m, 600m, 700m or 1000m.

In the embodiment of the present application, if the distance between itself and the sending device of the SCI is less than or equal to the third threshold, it indicates that the distance between itself and the sending device of the SCI meets the communication range requirement that can maintain good transmission, and proceeds to step 504; If the distance between itself and the sending device of SCI is greater than the third threshold, it indicates that the distance between itself and the sending device of SCI cannot maintain good transmission, and the device sending SCI is not suitable as an auxiliary device of the first device, and the steps are continued. 501.

Step 504: The first device determines that the sending device of the SCI is an auxiliary device for assisting its own SL communication.

Step 505: The first device sends an SL communication assistance request to the auxiliary device.

In this embodiment of the present application, steps 504 to 505 are the same as steps 406 to 407 , and details are not repeated here.

In the technical solution of the method for determining an auxiliary device provided by the embodiment of the present application, control information is received, and the control information includes auxiliary capability information; the auxiliary device is determined according to the auxiliary capability information, and the auxiliary device is used for auxiliary side link SL communication, which can reduce collisions problem and improve the transmission reliability of the auxiliary communication system.

FIG. 7 is a flowchart of another method for determining an auxiliary device provided by an embodiment of the present application. As shown in FIG. 7 , the method includes:

Step 601: The first device receives the SCI of the second device, the SCI includes auxiliary capability information, the SCI is a 2 ^nd stage SCI, and the format of the 2 ^nd stage SCI is predefined.

In this embodiment of the present application, the format of the 2 ^st stage SCI is a new format defined.

In this embodiment of the present application, the auxiliary capability information includes one of a zone identification code (Zone ID), a source identification code (Source ID), and indication information, or any combination thereof. Among them, the indication information is used to indicate the device capability of the auxiliary SL communication; the Zone ID is used to indicate the location of other devices; the Source ID is used to indicate other devices.

In this embodiment of the present application, the second-order side link control information (New 2 ^nd stage SCI format) having a defined new format includes one of a Zone ID field, a Source ID field, and a Destination ID field, or any combination thereof. The Zone ID field includes the Zone ID; the Source ID field includes the Source ID; the Destination ID field includes the Destination ID.

It is worth noting that if the New 2 ^nd stage SCI format only includes the Zone ID field, the Zone ID can also be used to indicate the device capability of the auxiliary SL communication. When the device capability of the auxiliary SL communication indicates that the auxiliary SL communication is supported, the auxiliary device is determined as The sending device of the SCI; when the device capability of the auxiliary SL communication indicates that the auxiliary SL communication is not supported, the auxiliary device is not the sending device of the SCI.

It is worth noting that if the New 2 ^nd stage SCI format only includes the Destination ID field, the Destination ID can also be used to indicate the device capability of the auxiliary SL communication. If the device capability of the auxiliary SL communication indicated by the Destination ID is supported by the sending device of the SCI For auxiliary SL communication, determine that the auxiliary device is the sending device of SCI; if the sending device whose capability of auxiliary SL communication indicated by Destination ID is SCI does not support auxiliary SL communication, the auxiliary device is not the sending device of SCI.

Step 602: The first device determines the distance between itself and the sending device of the SCI according to its own location and Zone ID.

In this embodiment of the present application, step 602 is the same as step 302, and details are not repeated here.

Step 603: The first device determines whether the distance between itself and the sending device of the SCI is less than or equal to the fourth threshold, if so, go to step 604; if not, go to step 601.

As an optional solution, the fourth threshold is Communication range requirement. Communication range requirement can be configured by Radio Resource Control (RRC) parameters, indicating that good transmission can be maintained between UEs. As an optional solution, the Communication range requirement is 20 meters, 50 meters, 80 meters, 100 meters, 120 meters, 150 meters, 180 meters, 200 meters, 220 meters, 250 meters, 270 meters, 300 meters , 350m, 370m, 400m, 420m, 450m, 480m, 500m, 550m, 600m, 700m or 1000m.

In the embodiment of the present application, if the distance between itself and the sending device of the SCI is less than or equal to the fourth threshold, it indicates that the distance between itself and the sending device of the SCI meets the communication range requirement that can maintain good transmission, and proceeds to step 604; If the distance between itself and the sending device of the SCI is greater than the fourth threshold, it indicates that the distance between itself and the sending device of the SCI cannot maintain good transmission, and the device sending the SCI is not suitable as an auxiliary device of the first device, and the steps are continued. 601.

Step 604: The first device determines that the sending device of the SCI is an auxiliary device for assisting its own SL communication.

Step 605: The first device sends an SL communication assistance request to the auxiliary device.

Steps 604 to 605 in this embodiment of the present application are the same as steps 304 to 305, and details are not repeated here.

FIG. 8 is a schematic structural diagram of an apparatus for determining an auxiliary device provided by an embodiment of the present application. The apparatus is used to execute the above-mentioned method for determining an auxiliary device. As shown in FIG. 8 , the apparatus includes: a receiving unit 11 and a determining unit 12 .

The receiving unit 11 is configured to receive control information, where the control information includes auxiliary capability information. The detection unit 11 may be a chip, a chip module or a part of a chip module.

The determining unit 12 is configured to determine an auxiliary device according to the auxiliary capability information, and the auxiliary device is used to assist the side link SL communication. The determining unit 12 may be: a chip, a chip module or a part of a chip module.

In the embodiment of the present application, the determining unit 12 is specifically configured to determine, according to the auxiliary capability information, that the sending device of the control information is an auxiliary device used to assist its own SL communication.

In this embodiment of the present application, the apparatus further includes: a sending unit 13 .

The sending unit 13 is specifically configured to send the SL communication assistance request to the auxiliary device.

In the embodiment of the present application, the determining unit 12 is specifically configured to determine the distance between itself and the sending device of the control information according to its own location and the area identification code; if the distance between itself and the sending device is less than or equal to the first threshold , and determine that the sending device of the control information is an auxiliary device for assisting its own SL communication.

In the embodiment of the present application, the determining unit 12 is specifically configured to determine the distance between itself and the sending device of the control information if the device capability of the auxiliary SL communication is used to indicate that the sending device of the control information supports the auxiliary SL communication; The distance between the sending devices is less than or equal to the second threshold, and it is determined that the sending device of the control information is an auxiliary device for assisting its own SL communication.

In the embodiment of the present application, the determining unit 12 is further configured to determine the distance between itself and the sending device of the control information according to its own location and the area identification code, wherein the area identification code is obtained from the physical side link shared channel PSSCH received above.

In the embodiment of the present application, the determining unit 12 is specifically configured to determine the distance between itself and the sending device of the control information if the device capability of the auxiliary SL communication is used to indicate that the sending device of the control information supports the auxiliary SL communication; The distance between the sending devices is less than or equal to the third threshold, and it is determined that the sending device of the control information is an auxiliary device for assisting its own SL communication.

In the solution of the embodiment of the present application, control information is received, and the control information includes auxiliary capability information; auxiliary equipment is determined according to the auxiliary capability information, and the auxiliary equipment is used for auxiliary side link SL communication, which can reduce the collision problem and improve the transmission reliability of the auxiliary communication system. sex.

An embodiment of the present application provides a storage medium, where the storage medium includes a stored program, wherein, when the program is run, the device where the storage medium is located is controlled to execute the steps of the above-mentioned embodiments of the method for determining an auxiliary device. For a specific description, please refer to the above-mentioned auxiliary device An example of a method for determining .

An embodiment of the present application provides an electronic device, including a memory and a processor, where the memory is used to store information including program instructions, the processor is used to control the execution of the program instructions, and when the program instructions are loaded and executed by the processor, the above-mentioned auxiliary equipment is implemented. For each step of the embodiment of the determination method, reference may be made to the above-mentioned embodiment of the determination method of the auxiliary device for a specific description.

FIG. 9 is a schematic diagram of an electronic device according to an embodiment of the present application. As shown in FIG. 9 , the electronic device 30 of this embodiment includes: a processor 31 , a memory 32 , and a computer program 33 stored in the memory 32 and executable on the processor 31 , when the computer program 33 is executed by the processor 31 The determination method applied to the auxiliary device in the embodiment is implemented, and in order to avoid repetition, details are not described here one by one. Alternatively, when the computer program is executed by the processor 31, the functions of each model/unit in the apparatus for determining the auxiliary device in the embodiment are implemented. To avoid repetition, details are not repeated here.

The electronic device 30 includes, but is not limited to, a processor 31 and a memory 32 . Those skilled in the art can understand that FIG. 9 is only an example of the electronic device 30, and does not constitute a limitation to the electronic device 30, and may include more or less components than the one shown, or combine some components, or different components For example, the electronic device may also include an input and output device, a network access device, a bus, and the like.

The so-called processor 31 may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processors, DSP), application specific integrated circuits (Application specific Integrated Circuit, ASIC), Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 32 may be an internal storage unit of the electronic device 30 , such as a hard disk or a memory of the electronic device 30 . The memory 32 can also be an external storage device of the electronic device 30, such as a plug-in hard disk, a smart storage (Smart Media, SM) card, a Secure Digital (SD) card, a flash memory card (Flash Card) equipped on the electronic device 30 )Wait. Further, the memory 32 may also include both an internal storage unit of the electronic device 30 and an external storage device. The memory 32 is used to store computer programs and other programs and data required by the electronic device. The memory 32 may also be used to temporarily store data that has been or will be output.

Each device and product described in the above embodiments includes modules/units, which may be software modules/units or hardware modules/units, or may be partly software modules/units and partly hardware modules/units. For example, for each device or product of an application or integrated chip, each module/unit included in the product may be implemented by hardware such as circuits, or at least some modules/units may be implemented by software programs, which run on the integrated processing inside the chip. The remaining (if any) part of the modules/units can be implemented by hardware such as circuits; for each device and product corresponding to or integrated with the chip module, the modules/units contained therein can be implemented by hardware such as circuits. , different modules/units can be located in the same piece (such as chip, circuit module, etc.) or different components of the chip module, and at least some/units can be implemented by a software program that runs on the integrated processor inside the chip module The remaining (if any) modules/units can be implemented by hardware such as circuits; for each device or product applied to or integrated in the terminal, the modules/units contained therein can be implemented by hardware such as circuits. The unit may be located in the same component (for example, chip, circuit module, etc.) or different components in the terminal, or at least some of the modules/units may be implemented in the form of a software program that runs on the processor integrated inside the terminal, and the rest (if Yes) Some modules/units can be implemented by hardware such as circuits.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the present application. within the scope of protection.

Claims

A communication method, characterized in that the method comprises:

receiving control information, the control information including auxiliary capability information;

According to the auxiliary capability information, an auxiliary device is determined, and the auxiliary device is used for auxiliary side link SL communication.
The method according to claim 1, wherein the auxiliary capability information is used to indicate that the sending device of the control information supports auxiliary SL communication; and determining the auxiliary device according to the auxiliary capability information, comprising:

According to the auxiliary capability information, it is determined that the sending device of the control information is an auxiliary device for assisting its own SL communication.
The method according to claim 1 or 2, wherein the method further comprises:

An SL communication assistance request is sent to the auxiliary device.
The method according to any one of claims 1 to 3, wherein the auxiliary capability information includes at least one of the following information:

Area identification code, source identification code or indication information; the indication information is used to indicate the device capability of assisting SL communication.
The method according to any one of claims 1 to 4, wherein the control information is first order side link control information.
The method according to claim 5, wherein the format of the first-order side link control information is format 1-A.
The method according to claim 6, wherein the control information comprises auxiliary capability information, comprising:

The first-order side link side link control information includes an indication information field, where the indication information field is used to indicate a device capability of assisting SL communication.
The method according to claim 6, wherein the format of the first-order side link control information is predefined.
The method according to claim 8, wherein the control information comprises auxiliary capability information, comprising:

The first-order side link control information includes an area identification code field, and the area identification code field includes an area identification code.
The method of claim 9, wherein the determining an auxiliary device according to the auxiliary capability information comprises:

Determine the distance between itself and the sending device of the control information according to its own location and the area identification code;

If the distance between itself and the sending device is less than or equal to the first threshold, it is determined that the sending device of the control information is an auxiliary device for assisting its own SL communication.
The method according to any one of claims 1 to 4, wherein the control information is second order side link control information.
The method according to claim 11, wherein the format of the second-order side link control information is format 2-A.
The method according to claim 12, wherein the control information comprises auxiliary capability information, comprising:

The second-order side link control information includes a target identification code field, and the target identification code field includes a target identification code, and the target identification code is used to indicate a device capability for assisting SL communication.
The method of claim 13, wherein the determining an auxiliary device according to the auxiliary capability information comprises:

If the device capability of the auxiliary SL communication is used to indicate that the sending device of the control information supports the auxiliary SL communication, determine the distance between itself and the sending device of the control information;

If the distance between itself and the sending device of the control information is less than or equal to the second threshold, it is determined that the sending device of the control information is an auxiliary device for assisting its own SL communication.
The method according to claim 14, wherein the determining the distance between itself and the sending device of the control information comprises:

Determine the distance between the self and the sending device of the control information according to the location of the self and the area identification code, wherein the area identification code is received from the physical side link shared channel PSSCH.
The method according to claim 11, wherein the format of the second-order side link control information is format 2-B.
The method according to claim 16, wherein the control information comprises auxiliary capability information, comprising:

The second-order side link control information includes a target identification code field, and the target identification code field includes a target identification code, and the target identification code is used to indicate a device capability for assisting SL communication.
The method of claim 17, wherein the determining an auxiliary device according to the auxiliary capability information comprises:

If the device capability of the auxiliary SL communication is used to indicate that the sending device of the control information supports the auxiliary SL communication, determine the distance between itself and the sending device of the control information;

If the distance between itself and the sending device of the control information is less than or equal to a third threshold, it is determined that the sending device of the control information is an auxiliary device for assisting its own SL communication.
The method according to claim 11, wherein the format of the second order side link control information is predefined.
The method according to claim 19, wherein the second-order side link control information includes an area identification code field and/or a target identification code field, the area identification code field includes an area identification code, and the target The identification code field includes the target identification code.
A device for determining auxiliary equipment, characterized in that the device comprises:

a receiving unit, configured to receive control information, where the control information includes auxiliary capability information;

and a determining unit, configured to determine an auxiliary device according to the auxiliary capability information, where the auxiliary device is used to assist side link SL communication.
A computer-readable storage medium, characterized in that the storage medium comprises a stored program, wherein when the program is run, a device where the storage medium is located is controlled to execute the assistance described in any one of claims 1 to 20 Device determination method.
An electronic device, comprising a memory and a processor, wherein the memory is used to store information including program instructions, the processor is used to control the execution of the program instructions, and it is characterized in that, the program instructions are loaded and executed by the processor. The method for determining an auxiliary device according to any one of claims 1 to 20.