WO2021016940A1

WO2021016940A1 - Synchronization signal configuration method and apparatus for v2x communication, and storage medium

Info

Publication number: WO2021016940A1
Application number: PCT/CN2019/098695
Authority: WO
Inventors: 刘洋
Original assignee: 北京小米移动软件有限公司
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2021-02-04
Also published as: CN110583032A; CN110583032B

Abstract

The present disclosure relates to a synchronization signal configuration method and apparatus for V2X communication, and a storage medium, belonging to the technical field of communications. The method comprises: a base station sending sidelink synchronization signal block (S-SSB) configuration information, wherein the S-SSB configuration information is used for configuring the number of S-SSBs for a terminal for V2X communication; and the number of S-SSBs refers to the number of S-SSBs sent within one period. According to the present disclosure, the S-SSB configuration information is sent to the terminal by the base station, and the S-SSB configuration information is used for configuring the number of S-SSBs sent within one period, thereby realizing flexible configuration of the number of S-SSBs. Compared with a method using a fixed configuration, the technical solution provided in the embodiments of the present disclosure is more beneficial to improving the V2X performance.

Description

Synchronous signal configuration method, device and storage medium of V2X communication

Technical field

The embodiments of the present disclosure relate to the field of communication technologies, and in particular, to a synchronization signal configuration method, device, and storage medium for V2X (Vehicle to Everything, Internet of Vehicles) communication.

Background technique

In V2X technology, vehicle-mounted equipment and other equipment (such as other vehicle-mounted equipment, roadside infrastructure, etc.) can communicate directly through sidelinks. Direct communication has the characteristics of short delay and low overhead.

For 5G NR (New Radio, New Radio) V2X technology direct connection communication scenarios, the design of the synchronization signal can follow the design of the NR system, but because the NR system has the central node gNB (next generation NodeB), and the V2X direct connection communication scenario There is no central node, so when designing the synchronization signal in the V2X direct communication scenario, although you can refer to the synchronization signal design in the NR system, you need to make some adaptive changes.

Summary of the invention

The embodiments of the present disclosure provide a synchronization signal configuration method, device and storage medium for V2X communication. The technical solution is as follows:

According to a first aspect of the embodiments of the present disclosure, there is provided a synchronization signal configuration method for V2X communication, the method including:

The base station sends S-SSB (Sidelink Synchronization Signal Block) configuration information, and the S-SSB configuration information is used to configure the number of S-SSBs to the terminal of V2X communication; where the number of S-SSBs is Refers to the number of S-SSBs sent in a cycle.

Optionally, the base station supports providing different S-SSB configuration information in different scenarios.

Optionally, the method further includes: the base station determines the maximum number of S-SSBs according to the working frequency band and beam support conditions of the terminals supporting V2X communication in the cell.

Optionally, the maximum value of the number of SSBs is an integer multiple of the number of S-SSBs configured by the S-SSB configuration information.

According to a second aspect of the embodiments of the present disclosure, there is provided a synchronization signal configuration method for V2X communication, the method including:

The terminal receives S-SSB configuration information, where the S-SSB configuration information is used to configure the number of S-SSBs to the terminal for V2X communication;

Wherein, the number of S-SSBs refers to the number of S-SSBs sent in one cycle.

Optionally, the method further includes: the terminal determines the number n of first transmission beams according to the S-SSB configuration information, and the first transmission beam refers to a beam used to transmit the S-SSB; wherein, The number n of the first transmission beams is the same as the number of S-SSBs configured by the S-SSB configuration information, and the n is a positive integer.

Optionally, the method further includes: if the terminal has a transmission requirement for side link data, determining the direction of the first transmission beam by the terminal according to the direction of the second transmission beam, and the second transmission beam The beam refers to a beam used to transmit side link data; wherein, the coverage area of the first transmission beam overlaps the coverage area of the second transmission beam.

Optionally, if the number of the first transmission beam and the number of the second transmission beam are the same, the first transmission beam and the second transmission beam have a one-to-one correspondence, and the corresponding first transmission beam The directions of the transmitting beam and the second transmitting beam are the same.

Optionally, if the number of the first transmission beams is less than the number of the second transmission beams, at least one of the first transmission beams exists, and the coverage area of the first transmission beam overlaps with the coverage areas of the multiple second transmission beams .

Optionally, the method further includes: if the terminal does not have a transmission requirement of side link data, the terminal uses a beam scanning manner to transmit the S-SSB on the n first transmission beams.

Optionally, the method further includes: if the terminal receives the synchronization signal of the S-SSB in multiple beam directions, the terminal determines the beam direction with the best received signal quality of the synchronization signal; the The terminal receives side link data sent by other terminals in the beam direction with the best received signal quality.

Optionally, the method further includes: the terminal adjusts the directions of the multiple first transmission beams used to transmit the S-SSB to the same target direction; wherein, the target direction refers to the direction of the terminal toward the target terminal The beam direction used by the link data on the sending side.

According to a third aspect of the embodiments of the present disclosure, there is provided a synchronization signal configuration device for V2X communication, which is applied in a base station, and the device includes:

The information sending module is configured to send S-SSB configuration information, where the S-SSB configuration information is used to configure the number of S-SSBs to the terminal of V2X communication; wherein, the number of S-SSBs refers to the number of S-SSBs sent in one cycle The number of S-SSBs.

Optionally, the device further includes: a maximum value determining module configured to determine the maximum value of the number of S-SSBs according to the working frequency band and beam support conditions of the terminals supporting V2X communication in the cell.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a synchronization signal configuration device for V2X communication, which is applied to a terminal, and the device includes:

The information receiving module is configured to receive S-SSB configuration information, where the S-SSB configuration information is used to configure the number of S-SSBs to the terminal of V2X communication; wherein, the number of S-SSBs refers to the number of S-SSBs sent in one cycle The number of S-SSBs.

Optionally, the apparatus further includes: a quantity determining module configured to determine the quantity n of first transmission beams according to the S-SSB configuration information, and the first transmission beam refers to the number n for transmitting the S-SSB Beam; wherein the number n of the first transmission beam is the same as the number of the S-SSB configured by the S-SSB configuration information, and the n is a positive integer.

Optionally, the device further includes: a direction determination module configured to determine the direction of the first transmission beam according to the direction of the second transmission beam when the terminal has a transmission requirement for side link data, so The second transmission beam refers to a beam used to transmit side link data; wherein, the coverage area of the first transmission beam overlaps the coverage area of the second transmission beam.

Optionally, the device further includes: a signal sending module configured to send the S on the n first sending beams in a beam scanning mode when the terminal does not have a sending demand for side link data. -SSB.

Optionally, the device further includes: a direction selection module configured to determine the beam with the best received signal quality of the synchronization signal when the terminal receives the synchronization signal of the S-SSB in multiple beam directions Direction; the data receiving module is configured to receive side link data sent by other terminals in the beam direction with the best received signal quality.

Optionally, the device further includes: a direction adjustment module configured to adjust the directions of a plurality of first transmission beams to the same target direction, and the first transmission beam refers to a beam used to transmit S-SSB; The target direction refers to the beam direction used by the terminal to send side link data to the target terminal.

According to a fifth aspect of the embodiments of the present disclosure, there is provided a synchronization signal configuration device for V2X communication, which is applied in a base station, and the device includes:

processor;

A memory for storing executable instructions of the processor;

Wherein, the processor is configured to:

Sending S-SSB configuration information, where the S-SSB configuration information is used to configure the number of S-SSBs to the terminal for V2X communication;

Wherein, the number of S-SSBs refers to the number of S-SSBs sent in one cycle.

According to a sixth aspect of the embodiments of the present disclosure, there is provided a synchronization signal configuration device for V2X communication, which is applied to a terminal, and the device includes:

processor;

A memory for storing executable instructions of the processor;

Wherein, the processor is configured to:

Receiving S-SSB configuration information, where the S-SSB configuration information is used to configure the number of S-SSBs to a terminal for V2X communication;

Wherein, the number of S-SSBs refers to the number of S-SSBs sent in one cycle.

According to a seventh aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method described in the first aspect are implemented, Or implement the steps of the method described in the second aspect.

The beneficial effects brought about by the technical solutions provided by the embodiments of the present disclosure may include:

The S-SSB configuration information is sent to the terminal through the base station. The S-SSB configuration information is used to configure the number of S-SSBs sent in a cycle, which realizes the flexible configuration of the number of S-SSBs, compared to adopting a fixed configuration The technical solutions provided by the embodiments of the present disclosure are more conducive to the improvement of V2X performance.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work.

Fig. 1 is a schematic diagram of a network architecture provided by an exemplary embodiment of the present disclosure;

Fig. 2 is a flowchart of a method for configuring synchronization signals of V2X communication according to an exemplary embodiment of the present disclosure;

FIG. 3 is a flowchart of a synchronization signal configuration method for V2X communication according to another exemplary embodiment of the present disclosure;

Fig. 4 is an effect diagram of a beam direction adjustment provided by an exemplary embodiment of the present disclosure;

Fig. 5 is a schematic diagram of beam direction adjustment provided by an exemplary embodiment of the present disclosure;

Fig. 6 is a block diagram of a synchronization signal configuration device for V2X communication according to an exemplary embodiment of the present disclosure;

FIG. 7 is a block diagram of a synchronization signal configuration device for V2X communication according to another exemplary embodiment of the present disclosure;

FIG. 8 is a block diagram of a synchronization signal configuration device for V2X communication according to another exemplary embodiment of the present disclosure;

FIG. 9 is a block diagram of a synchronization signal configuration device for V2X communication according to another exemplary embodiment of the present disclosure;

Fig. 10 is a schematic structural diagram of a base station provided by an exemplary embodiment of the present disclosure;

Fig. 11 is a schematic structural diagram of a terminal provided by an exemplary embodiment of the present disclosure.

Detailed ways

Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. Rather, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

The network architecture and business scenarios described in the embodiments of the present disclosure are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure, and do not constitute a limitation to the technical solutions provided by the embodiments of the present disclosure. Those of ordinary skill in the art will know that with the network architecture The evolution of and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present disclosure are equally applicable to similar technical problems.

Fig. 1 is a schematic diagram showing a network architecture according to an exemplary embodiment. The network architecture may include: a core network 11, an access network 12, and a terminal 13.

The core network 11 includes several core network equipment. The function of the core network equipment is mainly to provide user connections, manage users, and complete the bearing of services, as the bearer network to provide an interface to the external network. For example, the core network of the 5G NR system may include AMF (Access and Mobility Management Function, access and mobility management function) entities, UPF (User Plane Function, user plane function) entities, and SMF (Session Management Function, session management functions). ) Physical and other equipment.

The access network 12 includes a number of base stations 14. The access network in the 5G NR system can be called NG-RAN (New Generation-Radio Access Network). The base station 14 is a device deployed in the access network 12 to provide the terminal 13 with wireless communication functions. The base station 14 may include various forms of macro base stations, micro base stations, relay stations, access points, and so on. In systems using different wireless access technologies, the names of devices with base station functions may be different. For example, in a 5G NR system, they are called gNodeB or gNB. As communication technology evolves, the name "base station" may change. For ease of description, in the embodiments of the present disclosure, the above-mentioned devices for providing wireless communication functions for the terminal 13 are collectively referred to as base stations.

The number of terminals 13 is usually multiple, and one or more terminals 13 may be distributed in a cell managed by each base station 14. The terminal 13 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of User Equipment (UE), mobile stations ( Mobile Station, MS), terminal device (terminal device), etc. For ease of description, the devices mentioned above are collectively referred to as terminals. The base station 14 and the core network equipment communicate with each other through some aerial technology, such as the NG interface in the 5G NR system. The base station 14 and the terminal 13 communicate with each other through a certain aerial technology, such as a Uu interface.

The terminal 13 and the terminal 13 (for example, vehicle-mounted equipment and other equipment (such as other vehicle-mounted equipment, mobile phones, RSU (Road Side Unit), etc.)) can communicate with each other through a direct communication interface (such as a PC5 interface). In particular, the communication link established based on the direct communication interface may be referred to as a direct link or a side link. Compared with the communication based on the Uu interface, the communication based on the direct communication interface has the characteristics of short delay and low overhead, and it is suitable for communication between two terminals in close geographic locations (such as vehicle-mounted equipment and other peripheral devices in close geographic locations). Communication.

The "5G NR system" in the embodiments of the present disclosure may also be referred to as a 5G system or an NR system, but those skilled in the art can understand its meaning. The technical solutions described in the embodiments of the present disclosure may be applicable to the 5G NR system, and may also be applicable to the subsequent evolution system of the 5G NR system.

The SSB in the V2X communication scenario is called S-SSB, which represents the SSB used for side link communication. In the embodiments of the present disclosure, for the direct communication scenario in the above-mentioned V2X service scenario, a synchronization signal configuration method is provided. S-SSB configuration information is sent to the terminal through the base station, and the S-SSB configuration information is used for configuration in one cycle. The number of sent S-SSBs realizes a flexible configuration of the number of S-SSBs. Compared with adopting a fixed configuration, the technical solution provided by the embodiments of the present disclosure is more conducive to the improvement of V2X performance.

Hereinafter, the technical solution of the present disclosure will be introduced and explained through several exemplary embodiments.

Fig. 2 is a flow chart showing a method for configuring synchronization signals of V2X communication according to an exemplary embodiment. This method can be applied to the base station 14 of the network architecture shown in FIG. 1. The method may include the following steps:

In step 201, the base station sends S-SSB configuration information, and the S-SSB configuration information is used to configure the number of S-SSBs to the terminal for V2X communication.

The base station can send S-SSB configuration information to the terminals in the serving cell, and configure the number of S-SSBs to the terminals in the cell performing V2X communication through the S-SSB configuration information. In the embodiments of the present disclosure, the number of S-SSBs refers to the number of S-SSBs transmitted in one cycle. The terminal in V2X communication can periodically send S-SSB to realize synchronization with other terminals in V2X communication. The number of S-SSBs sent in each cycle and the time domain position occupied by each S-SSB may be the same. For example, the number of S-SSBs configured by the base station through the S-SSB configuration information is 4, which means that the terminal configures the terminal in the cell to send 4 S-SSBs in each cycle.

In the embodiments of the present disclosure, the S-SSB may include: sidelink PSS (sidelink Primary Synchronized Signal), sidelink SSS (sidelink Secondary Synchronized Signal) and sidelink PBCH (sidelink Physical) Broadcast Channel, side link physical broadcast channel).

In addition, the base station can send S-SSB configuration information to the terminals in the serving cell by broadcasting. For example, the S-SSB configuration information can be sent as system information. After the terminal accesses the base station, it can receive the system information broadcast by the base station, including the S-SSB configuration information.

Optionally, in addition to the number of S-SSBs in the S-SSB configuration information, the S-SSB configuration information may also include other information related to the S-SSB configuration. For example, the S-SSB configuration information may also include at least one of the following: periodic configuration information, time domain configuration information, and so on. The period configuration information is used to indicate the transmission period of the S-SSB, and the time domain configuration information is used to indicate the time domain position of the S-SSB in the transmission period. For example, the transmission period of the S-SSB is 10 ms, and the time domain positions of the S-SSB in each transmission period of 10 ms are 1 ms, 3 ms, 5 ms, 7 ms, and 9 ms.

Optionally, the base station supports providing different S-SSB configuration information in different scenarios. For example, in an application scenario that requires high synchronization real-time performance and an application scenario that requires low synchronization real-time performance, the S-SSB configuration information sent by the base station is different, that is, the number of S-SSB configured to the terminal is Different. For example, in an application scenario that requires high synchronization real-time performance, the number of S-SSBs configured to the terminal can be 4; for an application scenario where synchronization real-time requirements are low, the number of S-SSB configured to the terminal can be 2. Through the above method, the base station can provide different S-SSB configuration information in different scenarios, so that the S-SSB configuration information is more in line with the requirements of actual scenarios, and the flexibility of configuration is further improved.

Optionally, the base station determines the maximum number of S-SSBs according to the working frequency band and beam support conditions of the terminals supporting V2X communication in the cell. Among them, the working frequency band refers to the frequency band used by the terminal during V2X communication, and the beam support situation refers to the number of beams that the terminal can use when sending and/or receiving information. For multiple terminals in the same cell, their working frequency bands and beam support conditions may be the same or different, which is not limited in the embodiments of the present disclosure. Exemplarily, assuming that the base station determines that the maximum number of S-SSBs is 4, the number of S-SSBs configured by the base station to the terminals in the cell through the S-SSB configuration information cannot exceed 4. In the above manner, the base station determines the maximum number of S-SSBs according to the working frequency band and beam support conditions of the terminals supporting V2X communication in the cell, so that the number of S-SSBs configured by the base station for the terminal is more accurate.

Optionally, the maximum value of the number of S-SSBs is an integer multiple of the number of S-SSBs configured in the S-SSB configuration information. For example, if the maximum number of S-SSBs determined by the base station is 4, the number of S-SSBs configured by the base station to the terminal for V2X communication can be 4, 2, or 1.

In a possible implementation manner, the number of S-SSBs configured by the base station through the S-SSB configuration information is the above-mentioned maximum value. After receiving the S-SSB configuration information, the terminal can determine the number of S-SSBs to be sent in a period in accordance with its actual situation. Wherein, the number of S-SSBs to be sent in a period determined by the terminal may be the above-mentioned maximum value or less than the above-mentioned maximum value.

For example, if the number of S-SSBs configured by the base station to the terminal through the S-SSB configuration information is 4, the terminal can autonomously determine the number of S-SSBs sent in a period according to the actual application requirements, and the terminal independently determines the S-SSB. -The number of SSB cannot be greater than 4. If the synchronization demand of the terminal is relatively high, it can be determined to send 4 S-SSBs in one cycle; and if the synchronization demand of the terminal is relatively low, it can send 2 S-SSBs in one cycle. Optionally, the maximum value of the number of S-SSBs configured by the S-SSB configuration information is an integer multiple of the number of S-SSBs independently determined by the terminal. For example, if the maximum number of S-SSBs configured in the S-SSB configuration information is 4, the terminal can autonomously determine that the number of S-SSBs sent in a period can be 4, 2, or 1.

It should be noted that the technical solution provided by the embodiments of the present disclosure is suitable for V2X communication scenarios operating in the FR2 frequency band. In this scenario, the number of S-SSBs can be configured, that is, for the V2X communication scenario, the operating frequency is 24250MHz For terminals up to 52600MHz, the base station can configure the number of S-SSBs for the terminal through the method described above. Of course, for the V2X communication scenario working in the FR1 frequency band, the technical solutions provided by the embodiments of the present disclosure are also applicable, which is not limited in the present disclosure.

To sum up, in the technical solution provided by the embodiments of the present disclosure, the base station sends S-SSB configuration information to the terminal. The S-SSB configuration information is used to configure the number of S-SSBs sent in one cycle, which realizes the -Flexible configuration of the number of SSBs, compared to adopting a fixed configuration, the technical solution provided by the embodiments of the present disclosure is more conducive to the improvement of V2X performance.

In addition, the base station can provide different S-SSB configuration information in different scenarios, so that the S-SSB configuration information is more in line with the requirements of actual scenarios, and the flexibility of configuration is further improved.

In addition, the base station determines the maximum number of S-SSBs according to the working frequency band and beam support of the terminals supporting V2X communication in the cell, so that the number of S-SSBs configured by the base station for the terminal is more accurate.

Fig. 3 is a flowchart showing a synchronization signal configuration method of V2X communication according to another exemplary embodiment. This method can be applied to the terminal 13 of the network architecture shown in FIG. 1. The method may include the following steps:

In step 301, the terminal receives S-SSB configuration information. The S-SSB configuration information is used to configure the number of S-SSBs to the terminal for V2X communication. The number of S-SSBs refers to the number of S-SSBs sent in a period. number.

For the introduction and description of the S-SSB configuration information, please refer to the method embodiment on the base station side above, which will not be repeated in this embodiment.

After receiving the S-SSB configuration information, the terminal determines the number of S-SSBs to be sent in a period according to the number of S-SSBs configured by the S-SSB configuration information.

In an example, the number of S-SSBs to be sent in a period determined by the terminal is the number of S-SSBs configured by the S-SSB configuration information. For example, if the number of S-SSBs configured in the S-SSB configuration information is 4, the terminal determines that the number of S-SSBs sent in a period is 4; for another example, the number of S-SSBs configured in the S-SSB configuration information If it is 2, the terminal determines that the number of S-SSBs sent in a cycle is 2.

In another example, the terminal determines the number of S-SSBs to be sent in a period according to the number of S-SSBs configured by the S-SSB configuration information and its own actual application requirements. And the number of S-SSBs determined by the terminal is not greater than the number of S-SSBs configured in the S-SSB configuration information. Optionally, the number of S-SSBs configured in the S-SSB configuration information is an integer multiple of the number of S-SSBs determined by the terminal. For example, the number of S-SSBs configured in the S-SSB configuration information is 4. If the terminal's synchronization requirement is relatively high, it can be determined to send 4 S-SSBs in one cycle; and if the terminal's synchronization requirement is relatively low, Then two S-SSBs can be sent in one cycle.

In addition, after the above step 301, the following step may be included: the terminal determines the number n of the first transmission beams according to the S-SSB configuration information, where n is a positive integer. Wherein, the first sending beam refers to a beam used to send S-SSB.

In a possible implementation manner, the number n of the first transmission beams is the same as the number of S-SSBs configured in the S-SSB configuration information. For example, if the number of S-SSBs configured in the S-SSB configuration information is 4, the terminal determines that the number of the first transmission beam is also 4. In this way, in one cycle, the terminal can use 4 first transmission beams to send 4 S-SSBs respectively, that is, each first transmission beam is used to send one S-SSB.

Optionally, if the terminal has a transmission requirement for side link data, the terminal may also determine the direction of the first transmission beam according to the direction of the second transmission beam, where the second transmission beam refers to the transmission side link data The beam; wherein, the coverage of the first transmission beam overlaps with the coverage of the second transmission beam.

The coverage of the first transmission beam and the coverage of the second transmission beam described above overlap, which may be that the coverage of the first transmission beam and the coverage of the second transmission beam completely overlap, or may be partially overlapped. The embodiment does not limit this.

If the first transmission beam can adapt to the second transmission beam, that is, the coverage of the first transmission beam overlaps with the coverage of the second transmission beam, the receiving terminal of the S-SSB can achieve better synchronization effect. For example, as shown in Figure 4, when the first transmission beam of terminal A can adapt to the second transmission beam, terminal B can achieve a better synchronization effect; when the first transmission beam of terminal B can adapt to the second transmission beam, Terminal A can achieve a better synchronization effect. In addition, because the terminal needs to periodically check whether it is synchronized in the process of receiving data, by setting the coverage of the first transmission beam to overlap the coverage of the second transmission beam, the beam management process of the terminal can be simplified. Moreover, in the 5G NR system, the beam represents a certain spatial characteristic. If the direction of the first transmission beam is consistent with the direction of the second transmission beam, the direction of the first transmission beam can be used to provide side link data demodulation. A certain spatial reference.

Optionally, the coverage of the first transmission beam overlaps the coverage of the second transmission beam, which means that the direction of the first transmission beam is consistent with the direction of the second transmission beam. For example, referring to Figure 5, the terminal has a side link data transmission requirement, and the direction of the second transmission beam of the terminal is 20 degrees west of north to 40 degrees west of north, then the terminal determines the direction of the first transmission beam It is also 20 degrees west of north to 40 degrees west of north.

In an example, if the number of the first transmission beam and the number of the second transmission beam are the same, the first transmission beam and the second transmission beam correspond one-to-one, and the directions of the corresponding first transmission beam and the second transmission beam the same. The one-to-one correspondence between the first transmission beam and the second transmission beam means that one first transmission beam corresponds to one second transmission beam. For example, the number of the first transmission beam is 2, marked as the first transmission beam 1 and the first transmission beam 2, and the number of the second transmission beam is also 2, marked as the second transmission beam 1 and the second transmission beam 2, then The first transmission beam 1 may correspond to the second transmission beam 1, the first transmission beam 2 may correspond to the second transmission beam 2, and the direction of the first transmission beam 1 is consistent with the direction of the second transmission beam 1, and the first transmission beam The direction of 2 is consistent with the direction of the second transmission beam 2; or, the first transmission beam 1 may also correspond to the second transmission beam 2, and the first transmission beam 2 may also correspond to the second transmission beam 1, and the first transmission beam The direction of 1 is consistent with the direction of the second transmission beam 2, and the direction of the first transmission beam 2 is consistent with the direction of the second transmission beam 1.

In another example, if the number of first transmission beams is less than the number of second transmission beams, there is at least one first transmission beam whose coverage overlaps with the coverage of multiple second transmission beams, that is, there is at least one first transmission beam. The direction of a transmission beam includes the directions of a plurality of second transmission beams. For example, if the number of the first transmit beam is 1, it is recorded as the first transmit beam 1, and the number of the second transmit beam is 2, recorded as the second transmit beam 1 and the second transmit beam 2, then the coverage of the first transmit beam 1 The range may include the coverage of the second transmission beam 1 and the second transmission beam 2, that is, if the direction of the second transmission beam 1 is 60 degrees south east to 80 degrees south east, the direction of the second transmission beam 2 is east From 10 degrees south to 30 degrees south east, the direction of the first transmission beam 1 is 10 degrees south east to 80 degrees south east.

In addition, if the terminal does not have a transmission requirement for side link data, the terminal can use the beam scanning mode to send the S-SSB on the n first transmission beams. Because beam scanning can improve the coverage, when the terminal has no side link data transmission requirements, using beam scanning to send S-SSB on the first transmission beam can ensure that the synchronization signal of each terminal in V2X communication is maintained Consistent. In addition, the direction of beam scanning can be preset, which is not limited in the embodiment of the present disclosure.

In an exemplary embodiment, if the terminal receives the synchronization signal of the S-SSB in multiple beam directions, the terminal determines the beam direction with the best received signal quality of the synchronization signal; the terminal has the best received signal quality In the beam direction, receive side link data sent by other terminals.

When the terminal receives the S-SSB synchronization signal in multiple beam directions, the terminal can measure the received signal strength to determine the received signal quality of each beam. For example, the terminal receives S-SSB synchronization signals in two beam directions, which are recorded as beam direction 1, beam direction 2. Assuming that the received signal quality of beam direction 2 is better, the terminal will then be in beam direction 2. Receive side link data sent by other terminals.

Combined with the description of the above embodiment, since the terminal performing V2X communication, when transmitting S-SSB, the direction of the first transmission beam can be determined according to the direction of the second transmission beam, such as ensuring the coverage of the first transmission beam The coverage of the second transmission beam overlaps, such as ensuring that the direction of the first transmission beam is the same as the direction of the second transmission beam; then, for the receiving terminal, in the beam direction with the best received signal quality of the S-SSB, Receiving side link data sent by other terminals can improve the success rate of side link data reception. Because the transmitting terminal sends S-SSB and side link data in the same beam direction, the beam direction where the received signal quality of S-SSB is the best, the received signal quality of the side link data will not be bad, thereby improving the side link The success rate of data reception.

In an exemplary embodiment, the terminal may also adjust the directions of the multiple first transmission beams to the same target direction, and the target direction refers to the beam direction used by the terminal to send side link data to the target terminal. For example, the terminal has two first transmission beams, denoted as first transmission beam 1 and first transmission beam 2. Assume that the beam direction used by the terminal to send side link data to the target terminal is 10 degrees west to south At 30 degrees west, the terminal will also adjust the direction of the first transmission beam 1 and the direction of the first transmission beam 2 to 10 degrees west of south to 30 degrees west of south. Through the above method, multiple S-SSBs are transmitted in the same beam direction, which helps to improve the S-SSB reception effect.

In addition, the transmitting terminal adapts the first transmitting beam to the second transmitting beam, that is, the coverage of the first transmitting beam overlaps the coverage of the second transmitting beam, so that the receiving terminal of the S-SSB can achieve a better synchronization effect.

The following are device embodiments of the present disclosure, which can be used to implement the method embodiments of the present disclosure. For details that are not disclosed in the device embodiments of the present disclosure, please refer to the method embodiments of the present disclosure.

Fig. 6 is a block diagram showing a device for configuring a synchronization signal of V2X communication according to an exemplary embodiment. The device has the function of realizing the above-mentioned method example on the base station side, and the function can be realized by hardware, or by hardware executing corresponding software. The device can be a base station or set in a base station. The device 60 may include: an information sending module 61.

The information sending module 61 is configured to send S-SSB configuration information, where the S-SSB configuration information is used to configure the number of S-SSBs to the terminal of V2X communication; wherein, the number of S-SSBs means sending in one cycle The number of S-SSBs.

Optionally, referring to FIG. 7, the device 60 further includes: a maximum value determining module 62, configured to determine the maximum number of S-SSBs according to the working frequency band and beam support conditions of terminals supporting V2X communication in the cell value.

Fig. 8 is a block diagram showing a device for configuring a synchronization signal of V2X communication according to another exemplary embodiment. The device has the function of realizing the above-mentioned method example on the terminal side, and the function can be realized by hardware, or by hardware executing corresponding software. The device can be a terminal or set in the terminal. The device 80 may include: an information receiving module 81.

The information receiving module 81 is configured to receive S-SSB configuration information, and the S-SSB configuration information is used to configure the number of S-SSBs to the terminal of V2X communication; wherein, the number of S-SSBs refers to sending in one cycle The number of S-SSBs.

Optionally, referring to FIG. 9, the apparatus 80 further includes: a quantity determining module 82 configured to determine the quantity n of first transmission beams according to the S-SSB configuration information, where the first transmission beam refers to A beam used to transmit an S-SSB; wherein the number n of the first transmission beam is the same as the number of the S-SSB configured by the S-SSB configuration information, and the n is a positive integer.

Optionally, referring to FIG. 9, the apparatus 80 further includes a direction determining module 83, configured to determine the first transmission beam according to the direction of the second transmission beam when the terminal has a transmission requirement for side link data. A direction of a sending beam, the second sending beam refers to a beam used for sending side link data; wherein, the coverage of the first sending beam overlaps the coverage of the second sending beam.

Optionally, please refer to FIG. 9, the belonging device further includes: a signal sending module 84 configured to use a beam scanning method to scan the n first sending beams when the terminal does not have a sending demand for side link data The S-SSB is sent on.

Optionally, the device 80 further includes: a direction selection module 85 configured to determine that the received signal quality of the synchronization signal is the best when the terminal receives the synchronization signal of the S-SSB in multiple beam directions The data receiving module 86 is configured to receive side link data sent by other terminals in the beam direction with the best received signal quality.

Optionally, the apparatus 80 further includes: a direction adjustment module 87 configured to adjust the directions of the multiple first transmission beams to the same target direction; wherein, the target direction refers to the terminal sending to the target terminal The beam direction used by the side link data.

An exemplary embodiment of the present disclosure also provides a synchronization signal configuration device for V2X communication, which can be applied to the base station described above, and can implement the synchronization signal configuration method for V2X communication on the base station side provided in the present disclosure. The device may include a processor, and a memory for storing executable instructions of the processor. Among them, the processor is configured as:

Wherein, the number of S-SSBs refers to the number of S-SSBs sent in one cycle.

Optionally, the processor is further configured to:

The maximum number of S-SSBs is determined according to the working frequency band and beam support conditions of the terminals supporting V2X communication in the cell.

An exemplary embodiment of the present disclosure also provides a synchronization signal configuration device for V2X communication, which can be applied to the terminal introduced above, and can implement the synchronization signal configuration method for V2X communication on the terminal side provided in the present disclosure. The device may include a processor, and a memory for storing executable instructions of the processor. Among them, the processor is configured as:

Receiving side link synchronization signal block S-SSB configuration information, where the S-SSB configuration information is used to configure the number of S-SSBs to the terminal for V2X communication;

Wherein, the number of S-SSBs refers to the number of S-SSBs sent in one cycle.

Optionally, the processor is further configured to:

Determine the number n of first transmission beams according to the S-SSB configuration information, where the first transmission beam refers to a beam used to transmit S-SSB;

Wherein, the number n of the first transmission beams is the same as the number of S-SSBs configured by the S-SSB configuration information, and the n is a positive integer.

Optionally, the processor is further configured to:

If the terminal has a transmission requirement for side link data, the terminal determines the direction of the first transmission beam according to the direction of the second transmission beam, and the second transmission beam refers to the transmission side link data Beam

Wherein, the coverage area of the first transmission beam overlaps the coverage area of the second transmission beam.

Optionally, if the number of the first transmission beams is less than the number of the second transmission beams, there is at least one first transmission beam whose coverage area overlaps with coverage areas of multiple second transmission beams .

Optionally, the processor is further configured to:

If the terminal does not have a transmission requirement of side link data, the terminal transmits the S-SSB on the n first transmission beams in a beam scanning manner.

Optionally, the processor is further configured to:

If the terminal receives the synchronization signal of the S-SSB in multiple beam directions, the terminal determines the beam direction with the best received signal quality of the synchronization signal;

The terminal receives the side link data sent by other terminals in the beam direction with the best received signal quality.

Optionally, the processor is further configured to:

The terminal adjusts the directions of the multiple first transmission beams used to transmit the S-SSB to the same target direction;

The target direction refers to the beam direction used by the terminal to send side link data to the target terminal.

The foregoing mainly introduces the solutions provided by the embodiments of the present disclosure from the perspective of the terminal and the base station. It can be understood that, in order to realize the above-mentioned functions, the terminal and the base station include hardware structures and/or software modules corresponding to each function. In combination with the units and algorithm steps of the examples described in the embodiments disclosed in the present disclosure, the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Those skilled in the art can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the technical solutions of the embodiments of the present disclosure.

Fig. 10 is a schematic structural diagram showing a base station according to an exemplary embodiment.

The base station 1000 includes a transmitter/receiver 1001 and a processor 1002. The processor 1002 may also be a controller, which is represented as "controller/processor 1002" in FIG. 10. The transmitter/receiver 1001 is used to support the sending and receiving of information between the base station and the terminal in the foregoing embodiment, and to support communication between the base station and other network entities. The processor 1002 performs various functions for communicating with the terminal. In the uplink, the uplink signal from the terminal is received via the antenna, demodulated by the receiver 1001 (for example, the high-frequency signal is demodulated into a baseband signal), and further processed by the processor 1002 to restore the terminal Send to business data and signaling information. On the downlink, service data and signaling messages are processed by the processor 1002, and modulated by the transmitter 1001 (for example, the baseband signal is modulated into a high-frequency signal) to generate a downlink signal, which is transmitted to the terminal via the antenna . It should be noted that the above-mentioned demodulation or modulation function may also be performed by the processor 1002. For example, the processor 1002 is further configured to execute each step on the base station side in the foregoing method embodiment, and/or other steps of the technical solution described in the embodiment of the present disclosure.

Further, the base station 1000 may further include a memory 1003, and the memory 1003 is used to store program codes and data of the base station 1000. In addition, the base station may also include a communication unit 1004. The communication unit 1004 is used to support the base station to communicate with other network entities (for example, network equipment in the core network, etc.). For example, in a 5G NR system, the communication unit 1004 may be an NG-U interface to support communication between the base station and a UPF (User Plane Function) entity; or, the communication unit 1004 may also be an NG-C The interface is used to support access to AMF (Access and Mobility Management Function, access and mobility management function) entities for communication.

It is understandable that FIG. 10 only shows a simplified design of the base station 1000. In practical applications, the base station 1000 may include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all base stations that can implement the embodiments of the present disclosure are within the protection scope of the embodiments of the present disclosure. Inside.

Fig. 11 is a schematic structural diagram of a terminal according to an exemplary embodiment.

The terminal 1100 includes a transmitter 1101, a receiver 1102, and a processor 1103. The processor 1103 may also be a controller, which is represented as "controller/processor 1103" in FIG. 11. Optionally, the terminal 1100 may further include a modem processor 1105, where the modem processor 1105 may include an encoder 1106, a modulator 1107, a decoder 1108, and a demodulator 1109.

In one example, the transmitter 1101 adjusts (eg, analog conversion, filtering, amplification, and upconversion, etc.) the output samples and generates an uplink signal, which is transmitted to the base station via an antenna. On the downlink, the antenna receives the downlink signal transmitted by the base station. The receiver 1102 adjusts (e.g., filters, amplifies, downconverts, and digitizes, etc.) the signal received from the antenna and provides input samples. In the modem processor 1105, the encoder 1106 receives service data and signaling messages to be sent on the uplink, and processes the service data and signaling messages (for example, formatting, encoding, and interleaving). The modulator 1107 further processes (e.g., symbol mapping and modulation) the encoded service data and signaling messages and provides output samples. The demodulator 1109 processes (e.g., demodulates) the input samples and provides symbol estimates. The decoder 1108 processes (e.g., deinterleaves and decodes) the symbol estimation and provides decoded data and signaling messages sent to the terminal 1100. The encoder 1106, the modulator 1107, the demodulator 1109, and the decoder 1108 can be implemented by a synthesized modem processor 1105. These units are processed according to the radio access technology adopted by the radio access network (for example, 5G NR and access technologies of other evolved systems). It should be noted that when the terminal 1100 does not include the modem processor 1105, the foregoing functions of the modem processor 1105 may also be performed by the processor 1103.

The processor 1103 controls and manages the actions of the terminal 1100, and is configured to execute the processing procedure performed by the terminal 1100 in the foregoing embodiment of the present disclosure. For example, the processor 1103 is further configured to execute various steps on the terminal side in the foregoing method embodiments, and/or other steps of the technical solutions described in the embodiments of the present disclosure.

Further, the terminal 1100 may further include a memory 1104, and the memory 1104 is configured to store program codes and data for the terminal 1100.

It is understandable that FIG. 11 only shows a simplified design of the terminal 1100. In practical applications, the terminal 1100 may include any number of transmitters, receivers, processors, modem processors, memories, etc., and all terminals that can implement the embodiments of the present disclosure are within the protection scope of the embodiments of the present disclosure. Inside.

The embodiment of the present disclosure also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by the processor of the base station, the steps of the synchronization signal configuration method of the V2X communication on the base station side are realized .

The embodiment of the present disclosure also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by the processor of the terminal, the steps of the synchronization signal configuration method of the V2X communication on the terminal side are realized .

It should be understood that the "plurality" mentioned herein refers to two or more. "And/or" describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects are in an "or" relationship.

Those skilled in the art will easily think of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptive changes of the present disclosure. These variations, uses, or adaptive changes follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure. . The description and the embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

It should be understood that the present disclosure is not limited to the precise structure that has been described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

A synchronization signal configuration method for V2X communication, characterized in that the method includes:

The base station sends side link synchronization signal block S-SSB configuration information, where the S-SSB configuration information is used to configure the number of S-SSBs to the terminal of V2X communication;

Wherein, the number of S-SSBs refers to the number of S-SSBs sent in one cycle.
The method according to claim 1, wherein the base station supports providing different S-SSB configuration information in different scenarios.
The method of claim 1, wherein the method further comprises:

The base station determines the maximum number of S-SSBs according to the working frequency band and beam support conditions of the terminals supporting V2X communication in the cell.
The method according to claim 3, wherein the maximum value of the number of SSBs is an integer multiple of the number of S-SSBs configured by the S-SSB configuration information.
A synchronization signal configuration method for V2X communication, characterized in that the method includes:

The terminal receives side link synchronization signal block S-SSB configuration information, where the S-SSB configuration information is used to configure the number of S-SSBs to the terminal for V2X communication;

Wherein, the number of S-SSBs refers to the number of S-SSBs sent in one cycle.
The method of claim 5, wherein the method further comprises:

The terminal determines the number n of first transmission beams according to the S-SSB configuration information, where the first transmission beam refers to a beam used to transmit S-SSB;

Wherein, the number n of the first transmission beams is the same as the number of S-SSBs configured by the S-SSB configuration information, and the n is a positive integer.
The method according to claim 6, wherein the method further comprises:

If the terminal has a transmission requirement for side link data, the terminal determines the direction of the first transmission beam according to the direction of the second transmission beam, and the second transmission beam refers to the transmission side link data Beam

Wherein, the coverage area of the first transmission beam overlaps the coverage area of the second transmission beam.
7. The method according to claim 7, wherein if the number of the first transmission beam and the number of the second transmission beam are the same, the first transmission beam and the second transmission beam correspond one-to-one , And the corresponding directions of the first transmission beam and the second transmission beam are the same.
The method according to claim 7, wherein if the number of the first transmission beams is less than the number of the second transmission beams, then there is at least one first transmission beam whose coverage area is equal to that of multiple transmission beams. The coverage of the second transmission beam overlaps.
The method according to claim 6, wherein the method further comprises:

If the terminal does not have a transmission requirement of side link data, the terminal transmits the S-SSB on the n first transmission beams in a beam scanning manner.
The method according to any one of claims 5 to 10, wherein the method further comprises:

If the terminal receives the synchronization signal of the S-SSB in multiple beam directions, the terminal determines the beam direction with the best received signal quality of the synchronization signal;

The terminal receives the side link data sent by other terminals in the beam direction with the best received signal quality.
The method according to any one of claims 5 to 10, wherein the method further comprises:

The terminal adjusts the directions of the multiple first transmission beams to the same target direction, where the first transmission beam refers to a beam used to transmit S-SSB;

The target direction refers to the beam direction used by the terminal to send side link data to the target terminal.
A synchronization signal configuration device for V2X communication is characterized in that it is applied in a base station, and the device includes:

The information sending module is configured to send S-SSB configuration information of the link synchronization signal block on the side, where the S-SSB configuration information is used to configure the number of S-SSBs to the terminal for V2X communication;

Wherein, the number of S-SSBs refers to the number of S-SSBs sent in one cycle.
The apparatus according to claim 13, wherein the base station supports providing different S-SSB configuration information in different scenarios.
The device according to claim 13, wherein the device further comprises:

The maximum value determining module is configured to determine the maximum value of the number of S-SSBs according to the working frequency band and beam support conditions of the terminals supporting V2X communication in the cell.
The apparatus according to claim 15, wherein the maximum value of the number of SSBs is an integer multiple of the number of S-SSBs configured by the S-SSB configuration information.
A synchronization signal configuration device for V2X communication is characterized in that it is applied to a terminal, and the device includes:

The information receiving module is configured to receive S-SSB configuration information of the link synchronization signal block on the side, where the S-SSB configuration information is used to configure the number of S-SSBs to the terminal of the V2X communication;

Wherein, the number of S-SSBs refers to the number of S-SSBs sent in one cycle.
The device according to claim 17, wherein the device further comprises:

A quantity determining module, configured to determine the number n of first transmission beams according to the S-SSB configuration information, where the first transmission beam refers to a beam used to transmit the S-SSB;

Wherein, the number n of the first transmission beams is the same as the number of S-SSBs configured by the S-SSB configuration information, and the n is a positive integer.
The device according to claim 18, wherein the device further comprises:

The direction determining module is configured to determine the direction of the first transmission beam according to the direction of the second transmission beam when the terminal has a transmission demand for side link data, and the second transmission beam refers to the transmission Beam of side link data;

Wherein, the coverage area of the first transmission beam overlaps the coverage area of the second transmission beam.
The apparatus according to claim 19, wherein if the number of the first transmission beam and the number of the second transmission beam are the same, the first transmission beam and the second transmission beam correspond one-to-one , And the corresponding directions of the first transmission beam and the second transmission beam are the same.
The apparatus according to claim 19, wherein if the number of the first transmission beams is less than the number of the second transmission beams, then there is at least one first transmission beam whose coverage area is greater than the number of the second transmission beams. The coverage of the second transmission beam overlaps.
The device according to claim 18, wherein the device further comprises:

The signal sending module is configured to send the S-SSB on the n first sending beams in a beam scanning mode when the terminal does not have a sending demand for side link data.
The device according to any one of claims 17 to 22, wherein the device further comprises:

A direction selection module, configured to determine the beam direction with the best received signal quality of the synchronization signal when the terminal receives the synchronization signal of the S-SSB in multiple beam directions;

The data receiving module is configured to receive side link data sent by other terminals in the beam direction with the best received signal quality.
The device according to any one of claims 17 to 22, wherein the device further comprises:

A direction adjustment module configured to adjust the directions of a plurality of first transmission beams to the same target direction, where the first transmission beam refers to a beam used to transmit S-SSB;

The target direction refers to the beam direction used by the terminal to send side link data to the target terminal.
A synchronization signal configuration device for V2X communication, characterized in that it is applied in a base station, and the device includes:

processor;

A memory for storing executable instructions of the processor;

Wherein, the processor is configured to:

Sending side link synchronization signal block S-SSB configuration information, where the S-SSB configuration information is used to configure the number of S-SSBs to the terminal for V2X communication;

Wherein, the number of S-SSBs refers to the number of S-SSBs sent in one cycle.
A synchronization signal configuration device for V2X communication is characterized in that it is applied to a terminal, and the device includes:

processor;

A memory for storing executable instructions of the processor;

Wherein, the processor is configured to:

Receiving side link synchronization signal block S-SSB configuration information, where the S-SSB configuration information is used to configure the number of S-SSBs to the terminal for V2X communication;

Wherein, the number of S-SSBs refers to the number of S-SSBs sent in one cycle.
A non-transitory computer-readable storage medium with a computer program stored thereon, wherein the computer program implements the steps of any one of claims 1 to 4 when the computer program is executed by a processor, or implements The steps of the method according to any one of claims 5 to 12.