CN110583032A

CN110583032A - Synchronization signal configuration method and device for V2X communication and storage medium

Info

Publication number: CN110583032A
Application number: CN201980001591.5A
Authority: CN
Inventors: 刘洋
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2019-12-17
Anticipated expiration: 2039-07-31
Also published as: WO2021016940A1; CN110583032B

Abstract

The disclosure relates to a synchronization signal configuration method, a synchronization signal configuration device and a storage medium for V2X communication, and belongs to the technical field of communication. The method comprises the following steps: the base station sends side link synchronization signal block S-SSB configuration information, and the S-SSB configuration information is used for configuring the number of S-SSBs to the terminal communicated with V2X; wherein, the number of the S-SSBs refers to the number of the S-SSBs sent in one period. According to the method and the device, the base station sends the S-SSB configuration information to the terminal, the SSB configuration information is used for configuring the number of the S-SSBs sent in one period, flexible configuration of the number of the S-SSBs is achieved, and compared with the fixed configuration, the technical scheme provided by the embodiment of the invention is more beneficial to improvement of V2X performance.

Description

Synchronization signal configuration method and device for V2X communication and storage medium

Technical Field

The embodiment of the disclosure relates to the technical field of communication, and in particular, to a method, an apparatus, and a storage medium for configuring a synchronization signal for V2X (Vehicle to electrical networking) communication.

Background

In the V2X technology, direct communication between an in-vehicle device and other devices (such as other in-vehicle devices, road-side infrastructure, etc.) can be performed through sidelink (sidelink). The direct connection communication has the characteristics of short time delay, low overhead and the like.

For a direct connection communication scenario in a 5G NR (New Radio, New air interface) V2X technology, a design of a synchronization signal may follow a design of an NR system, but since the NR system has a central node gnb (next generation nodeb) and there is no central node in a V2X direct connection communication scenario, when designing a synchronization signal in a V2X direct connection communication scenario, although the design of the synchronization signal in the NR system may be referred to, some adaptive changes need to be made.

disclosure of Invention

The embodiment of the disclosure provides a synchronization signal configuration method and device for V2X communication and a storage medium.

The technical scheme 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:

A base station transmits S-SSB (Sidelink Synchronization Signal Block) configuration information, wherein the S-SSB configuration information is used for configuring the number of S-SSBs to a terminal in V2X communication; wherein, the number of the S-SSBs refers to the number of the S-SSBs sent in one period.

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

Optionally, the method further comprises: and the base station determines the maximum value of the S-SSB quantity according to the working frequency band and the beam supporting condition of the terminal supporting V2X communication in the cell.

Optionally, the maximum value of the SSB number is an integer multiple of the S-SSB number 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, wherein the S-SSB configuration information is used for configuring the number of S-SSBs to the terminal communicated with V2X;

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

optionally, the method further comprises: the terminal determines the number n of first sending beams according to the S-SSB configuration information, wherein the first sending beams are beams used for sending S-SSB; wherein the number n of the first transmission beams is the same as the number of the S-SSBs configured by the S-SSB configuration information, and n is a positive integer.

optionally, the method further comprises: if the terminal has a side link data transmission requirement, the terminal determines the direction of the first transmission beam according to the direction of a second transmission beam, wherein the second transmission beam is a beam used for transmitting side link data; wherein a coverage of the first transmit beam overlaps with a coverage of the second transmit beam.

optionally, if the number of the first transmission beams is the same as the number of the second transmission beams, the first transmission beams and the second transmission beams correspond to each other one to one, and the directions of the corresponding first transmission beams and the corresponding second transmission beams are the same.

optionally, if the number of the first transmission beams is smaller than the number of the second transmission beams, there is at least one first transmission beam whose coverage area overlaps with that of the plurality of second transmission beams.

optionally, the method further comprises: and if the terminal does not have the transmission requirement of the side link data, the terminal adopts a beam scanning mode to transmit the S-SSB on the n first transmission beams.

Optionally, the method further comprises: if the terminal receives the synchronization signal of the S-SSB in a plurality of beam directions, the terminal determines the beam direction with the optimal quality of the received signal of the synchronization signal; and the terminal receives side link data sent by other terminals in the beam direction with the optimal received signal quality.

Optionally, the method further comprises: the terminal adjusts the directions of a plurality of first transmitting beams for transmitting the S-SSB to the same target direction; the target direction refers to a beam direction adopted by the terminal to transmit side link data to the target terminal.

according to a third aspect of the embodiments of the present disclosure, there is provided a synchronization signal configuration apparatus for V2X communication, which is applied in a base station, the apparatus including:

the information sending module is configured to send S-SSB configuration information, and the S-SSB configuration information is used for configuring the number of S-SSBs to the terminal communicated with the V2X; wherein, the number of the S-SSBs refers to the number of the S-SSBs sent in one period.

Optionally, the apparatus further comprises: and the maximum value determining module is configured to determine the maximum value of the number of the S-SSBs according to the working frequency band and the beam supporting situation of the terminal 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 apparatus for V2X communication, which is applied in a terminal, the apparatus including:

an information receiving module configured to receive S-SSB configuration information for configuring the number of S-SSBs to a terminal communicating with V2X; wherein, the number of the S-SSBs refers to the number of the S-SSBs sent in one period.

optionally, the apparatus further comprises: a number determining module configured to determine a number n of first transmission beams according to the S-SSB configuration information, the first transmission beams being beams used for transmitting S-SSBs; wherein the number n of the first transmission beams is the same as the number of the S-SSBs configured by the S-SSB configuration information, and n is a positive integer.

Optionally, the apparatus further comprises: a direction determining module, configured to determine a direction of the first transmission beam according to a direction of a second transmission beam when the terminal has a transmission demand of side link data, where the second transmission beam is a beam for transmitting side link data; wherein a coverage of the first transmit beam overlaps with a coverage of the second transmit beam.

Optionally, the apparatus further comprises: a signal transmitting module configured to transmit the S-SSB on the n first transmit beams in a beam scanning manner when the terminal does not have a transmission requirement for side link data.

optionally, the apparatus further comprises: a direction selection module configured to determine a beam direction in which a received signal quality of a synchronization signal is optimal when the terminal receives the synchronization signal of the S-SSB in a plurality of beam directions; and the data receiving module is configured to receive the sidelink data transmitted by other terminals in the beam direction with the optimal received signal quality.

Optionally, the apparatus further comprises: a direction adjusting module configured to adjust directions of a plurality of first transmission beams to a same target direction, the first transmission beams being beams for transmitting S-SSB; the target direction refers to a beam direction adopted by the terminal to transmit 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 apparatus for V2X communication, which is applied in a base station, the apparatus including:

A processor;

a memory for storing executable instructions of the processor;

Wherein the processor is configured to:

sending S-SSB configuration information, wherein the S-SSB configuration information is used for configuring the number of S-SSBs to a terminal communicated with V2X;

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

A processor;

A memory for storing executable instructions of the processor;

wherein the processor is configured to:

Receiving S-SSB configuration information, wherein the S-SSB configuration information is used for configuring the number of S-SSBs to a terminal communicated with V2X;

according to a seventh aspect of embodiments of the present disclosure, there is provided a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to the first aspect or implements the steps of the method according to the second aspect.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure can include:

The base station sends the S-SSB configuration information to the terminal, and the SSB configuration information is used for configuring the number of the S-SSBs sent in one period, so that flexible configuration of the number of the S-SSBs is achieved, and compared with a fixed configuration, the technical scheme provided by the embodiment of the disclosure is more beneficial to improvement of V2X performance.

drawings

in order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

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 synchronization signal configuration method for 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 a diagram illustrating an effect of beam direction adjustment according to 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 apparatus for V2X communication according to an exemplary embodiment of the present disclosure;

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

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

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

fig. 10 is a schematic structural diagram of a base station according to an exemplary embodiment of the present disclosure;

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

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

the network architecture and the service scenario described in the embodiment of the present disclosure are for more clearly illustrating the technical solution of the embodiment of the present disclosure, and do not constitute a limitation to the technical solution provided in the embodiment of the present disclosure, and as the network architecture evolves and a new service scenario appears, a person of ordinary skill in the art may know that the technical solution provided in the embodiment of the present disclosure is also applicable to similar technical problems.

fig. 1 is a schematic diagram illustrating a network architecture in accordance with an example 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 devices. The core network device mainly functions to provide user connection, user management, and service completion bearer, and serves as a bearer network to provide an interface to an external network. For example, the core network of the 5G NR system may include devices such as an AMF (Access and Mobility Management Function) entity, a UPF (User Plane Function) entity, and an SMF (Session Management Function) entity.

Several base stations 14 are included in access network 12. The Access Network in the 5G NR system may be referred to as NG-RAN (New Generation-Radio Access Network, New Generation Radio Access Network). Base station 14 is a device deployed in access network 12 to provide wireless communication functions for terminal 13. The base stations 14 may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, the names of devices with base station functionality may differ, for example in a 5G NR system, called nodeb or gNB. The name "base station" may change as communication technology evolves. For convenience of description, in the embodiment of the present disclosure, the above-mentioned apparatuses providing the terminal 13 with the wireless communication function are collectively referred to as a base station.

The number of terminals 13 is usually plural, 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, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem with wireless communication functions, as well as various forms of User Equipment (UE), Mobile Stations (MS), terminal Equipment (terminal device), and so on. For convenience of description, the above-mentioned devices are collectively referred to as a terminal. The base stations 14 communicate with core network devices over some air technology, such as the NG interface in a 5G NR system. The base station 14 and the terminal 13 communicate with each other via some air technology, e.g. the Uu interface.

The terminal 13 and the terminal 13 (for example, the vehicle-mounted device and other devices (such as other vehicle-mounted devices, a mobile phone, an RSU (Road Side Unit, drive test Unit), etc.)) may communicate with each other through a direct communication interface (such as a PC5 interface), and accordingly, the communication link established based on the direct communication interface may be referred to as a direct link or a sidelink (sidelink). Compared with the Uu-interface-based communication, the communication based on the direct communication interface has the characteristics of short time delay, low overhead and the like, and is suitable for communication between two terminals close to the geographic position (such as vehicle-mounted equipment and other peripheral equipment close to the geographic position).

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 the meaning thereof. The technical scheme described in the embodiment of the present disclosure may be applied to a 5G NR system, and may also be applied to a subsequent evolution system of a 5GNR system.

The SSB in the V2X communication scenario is referred to as S-SSB, which represents the SSB for sidelink communications. In the embodiment of the present disclosure, a synchronization signal configuration method is provided for a direct connection communication scenario in the V2X service scenario, where S-SSB configuration information is sent to a terminal through a base station, and the SSB configuration information is used to configure the number of S-SSBs sent in a period, so that flexible configuration of the number of S-SSBs is achieved, and compared with a fixed configuration, the technical solution provided in the embodiment of the present disclosure is more beneficial to improving the performance of V2X.

The technical solution of the present disclosure is described below by means of several exemplary embodiments.

fig. 2 is a flow chart illustrating a synchronization signal configuration method for V2X communication, according to an example embodiment. The method may be applied in the base station 14 of the network architecture shown in fig. 1. The method may comprise the steps of:

In step 201, the base station transmits S-SSB configuration information for configuring the number of S-SSBs to the terminal communicating with V2X.

The base station may send S-SSB configuration information to the terminals in the serving cell, through which S-SSB configuration information the number of S-SSBs is configured to the terminals in the cell that are in V2X communication. In the embodiment of the present disclosure, the number of S-SSBs refers to the number of S-SSBs sent in one period. The terminals in V2X communication may periodically transmit S-SSBs to achieve synchronization with other terminals in V2X communication. The number of S-SSBs sent in each period and the time domain position occupied by each S-SSB may be the same. For example, if the number of S-SSBs configured by the base station through the S-SSB configuration information is 4, it indicates that the terminal is configured for the terminal in the cell to send 4S-SSBs in each period.

In an embodiment 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).

In addition, the base station can send the S-SSB configuration information to the terminal in the serving cell in a broadcasting mode. For example, the S-SSB configuration information may be sent as system information. After accessing the base station, the terminal may receive system information broadcast by the base station, where the system information includes the S-SSB configuration information.

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

optionally, the base station supports providing different S-SSB configuration information in different scenarios. For example, in an application scenario with a high requirement on synchronization instantaneity and an application scenario with a low requirement on synchronization instantaneity, the S-SSB configuration information sent by the base station is different, that is, the number of S-SSBs configured to the terminal is different. For example, in an application scenario where the requirement on synchronization real-time performance is high, the number of S-SSBs configured for the terminal may be 4; for an application scenario with a low requirement on synchronization real-time performance, the number of S-SSBs configured for the terminal may be 2. By the method, the base station can provide different S-SSB configuration information under different scenes, so that the S-SSB configuration information is more in line with the requirements of actual scenes, and the configuration flexibility is further improved.

Optionally, the base station determines the maximum value of the number of S-SSBs according to the working frequency band and beam support condition of the terminal supporting V2X communication in the cell. The operating frequency band refers to a frequency band adopted by the terminal when performing V2X communication, and the beam support condition refers to the number of beams that can be used by the terminal when transmitting and/or receiving information. For a plurality of terminals in the same cell, the operating frequency band and the beam support condition may be the same or different, and this is not limited in this disclosure. For example, assuming that the base station determines that the maximum value of the number of S-SSBs is 4, the number of S-SSBs that the base station configures to the terminal in the cell through the S-SSB configuration information may not exceed 4. Through the mode, the base station determines the maximum value of the S-SSB quantity according to the working frequency band and the beam supporting condition of the terminal supporting V2X communication in the cell, so that the S-SSB quantity configured for the terminal by the base station is more accurate.

Optionally, the maximum value of the number of S-SSBs is an integer multiple of the number of S-SSBs configured by the S-SSB configuration information. For example, if the maximum value of the number of S-SSBs determined by the base station is 4, the number of S-SSBs configured by the base station to the terminal communicating with V2X may 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 maximum value. After receiving the S-SSB configuration information, the terminal may determine the number of S-SSBs sent in one period according to its own actual situation. The number of the S-SSBs transmitted in one period determined by the terminal may be the maximum value or smaller than the 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 may autonomously determine the number of S-SSBs sent in one period according to the requirement of the actual application, and the number of S-SSBs autonomously determined by the terminal cannot be greater than 4. If the synchronization requirement of the terminal is relatively high, it can be determined that 4S-SSBs are transmitted in one period; and if the synchronization requirement of the terminal is low, 2S-SSBs may be transmitted in one period. 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 autonomously determined by the terminal. For example, if the maximum value of the number of S-SSBs configured by the S-SSB configuration information is 4, the terminal may autonomously determine that the number of S-SSBs transmitted in one period may be 4, 2, or 1.

It should be noted that the technical solution provided in the embodiment of the present disclosure is applicable to a V2X communication scenario operating in an FR2 frequency band, and in this scenario, the number of S-SSBs is configurable, that is, for a terminal having an operating frequency of 24250MHz to 52600MHz in the V2X communication scenario, the base station may configure the number of S-SSBs for the terminal in the manner described above. Of course, for a V2X communication scenario operating in the FR1 frequency band, the technical solution provided by the embodiment of the present disclosure may also be applicable, and the present disclosure does not limit this.

To sum up, in the technical solution provided in the embodiment of the present disclosure, the base station sends S-SSB configuration information to the terminal, where the SSB configuration information is used to configure the number of S-SSBs sent in one period, so as to implement flexible configuration of the number of S-SSBs, and compared with using a fixed configuration, the technical solution provided in the embodiment of the present disclosure is more beneficial to improving the performance of V2X.

in addition, the base station can provide different S-SSB configuration information under different scenes, so that the S-SSB configuration information better meets the requirements of actual scenes, and the configuration flexibility is further improved.

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

Fig. 3 is a flow chart illustrating a synchronization signal configuration method of V2X communication, according to another exemplary embodiment. The method can be applied to the terminal 13 of the network architecture shown in fig. 1. The method may comprise the steps of:

in step 301, the terminal receives S-SSB configuration information for configuring the number of S-SSBs to the terminal communicating with V2X, the number of S-SSBs being the number of S-SSBs sent in one cycle.

for the introduction and description of the S-SSB configuration information, reference may be made to the above method embodiment at the base station side, which is not described in detail in this embodiment.

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

in one example, the number of the S-SSBs sent in one period determined by the terminal is the number of the S-SSBs configured by the S-SSB configuration information. For example, if the number of S-SSBs configured by the S-SSB configuration information is 4, the terminal determines that the number of S-SSBs sent in one period is 4; for another example, if the number of S-SSBs configured by the S-SSB configuration information is 2, the terminal determines that the number of S-SSBs transmitted in one period is 2.

In another example, the terminal determines the number of the S-SSBs sent in one period according to the number of the S-SSBs configured by the S-SSB configuration information and the actual application requirements of the terminal. And the number of the S-SSBs determined by the terminal is not more than the number of the S-SSBs configured by the S-SSB configuration information. Optionally, the number of S-SSBs configured by 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 by the S-SSB configuration information is 4, and if the synchronization requirement of the terminal is relatively high, it may be determined that 4S-SSBs are sent in one period; and if the synchronization requirement of the terminal is low, 2S-SSBs may be transmitted in one period.

in addition, the step 301 may further include the following steps: and the terminal determines the number n of the first transmitting beams according to the S-SSB configuration information, wherein n is a positive integer. Wherein the first transmission beam is a beam for transmitting S-SSB.

in one possible implementation, the number n of the first transmission beams is the same as the number of the S-SSBs configured by the S-SSB configuration information. For example, if the number of S-SSBs configured by the S-SSB configuration information is 4, the terminal determines that the number of the first transmission beams is also 4. Thus, in one period, the terminal may use 4 first transmission beams to transmit 4S-SSBs, respectively, that is, each first transmission beam is used to transmit one S-SSB.

optionally, if the terminal has a need to transmit the sidelink data, the terminal may further determine a direction of the first transmit beam according to a direction of a second transmit beam, where the second transmit beam is a beam used for transmitting the sidelink data; wherein the coverage of the first transmit beam overlaps the coverage of the second transmit beam.

The coverage area of the first transmission beam overlaps with the coverage area of the second transmission beam, which may be a complete coverage area of the first transmission beam and a complete coverage area of the second transmission beam, or a partial coverage area of the first transmission beam and the second transmission beam, and the embodiment of the present disclosure 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 that of the second transmission beam, the receiving terminal of the S-SSB can achieve better synchronization effect. For example, as shown in fig. 4, when the first transmission beam of terminal a can adapt to the second transmission beam, terminal B can achieve 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, since the terminal needs to periodically check whether to synchronize in the process of receiving data, the beam management process of the terminal can be simplified by setting the coverage of the first transmission beam to overlap with the coverage of the second transmission beam. Also, in the 5G NR system, beams represent a certain spatial characteristic, and if the direction of a first transmission beam coincides with the direction of a second transmission beam, the direction of the first transmission beam can be used to provide a certain spatial reference for demodulation of side link data.

Optionally, the coverage of the first transmission beam overlaps with the coverage of the second transmission beam, which means that the direction of the first transmission beam is the same as the direction of the second transmission beam. For example, referring to fig. 5, if the terminal has a side link data transmission request and the terminal has a second transmission beam with a direction from 20 degrees north to 40 degrees north, the terminal determines that the first transmission beam also has a direction from 20 degrees north to 40 degrees north.

In one example, if the number of the first transmission beams is the same as the number of the second transmission beams, the first transmission beams and the second transmission beams correspond to each other one to one, and the directions of the corresponding first transmission beams and the second transmission beams are the same. The first transmission beams and the second transmission beams are in one-to-one correspondence, which means that one first transmission beam corresponds to one second transmission beam. For example, if the number of first transmission beams is 2, which is denoted as a first transmission beam 1 and a first transmission beam 2, and the number of second transmission beams is also 2, which is denoted as a second transmission beam 1 and a second transmission beam 2, 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 coincides with the direction of the second transmission beam 1, and the direction of the first transmission beam 2 coincides with the direction of the second transmission beam 2; alternatively, the first transmission beam 1 may correspond to the second transmission beam 2, the first transmission beam 2 may correspond to the second transmission beam 1, the direction of the first transmission beam 1 coincides with the direction of the second transmission beam 2, and the direction of the first transmission beam 2 coincides with the direction of the second transmission beam 1.

In another example, if the number of first transmission beams is smaller than the number of second transmission beams, there is at least one first transmission beam whose coverage area overlaps with the coverage areas of the plurality of second transmission beams, i.e. the direction in which there is at least one first transmission beam comprises the direction of the plurality of second transmission beams. For example, if the number of the first transmission beams is 1, denoted as first transmission beam 1, and the number of the second transmission beams is 2, denoted as second transmission beam 1 and second transmission beam 2, the coverage area of the first transmission beam 1 may include the coverage areas of the second transmission beam 1 and second transmission beam 2, that is, if the direction of the second transmission beam 1 is 60 degrees to 80 degrees, and the direction of the second transmission beam 2 is 10 degrees to 30 degrees, the direction of the first transmission beam 1 is 10 degrees to 80 degrees.

in addition, if the terminal does not have the transmission requirement of the side link data, the terminal may transmit the S-SSB on the n first transmission beams by using a beam scanning manner. Because the beam scanning can improve the coverage, when the terminal has no need of transmitting the sidelink data, the S-SSB is transmitted on the first transmission beam by using the beam scanning mode, so that the synchronization signals of the terminals in the V2X communication can be ensured to be consistent. In addition, the direction of beam scanning may be preset, which is not limited in the embodiment of the present disclosure.

In an exemplary embodiment, if a terminal receives a synchronization signal of an S-SSB in a plurality of beam directions, the terminal determines a beam direction in which a received signal quality of the synchronization signal is optimal; and the terminal receives the side link data transmitted by other terminals in the beam direction with the optimal received signal quality.

When the terminal receives the synchronization signal of the S-SSB in multiple beam directions, the terminal may measure the received signal strength to determine the received signal quality of each beam. For example, if the terminal receives synchronization signals of the S-SSB in 2 beam directions, which are denoted as beam direction 1 and beam direction 2, and the quality of the received signal in beam direction 2 is better, the terminal then receives sidelink data transmitted by another terminal in beam direction 2.

As described in conjunction with the above description of the embodiment, due to the terminal performing V2X communication, when transmitting S-SSB, the direction of the first transmission beam may be determined according to the direction of the second transmission beam, for example, the coverage area of the first transmission beam is ensured to overlap with the coverage area of the second transmission beam, for example, the direction of the first transmission beam is ensured to be the same as the direction of the second transmission beam; then, for the receiving terminal, the sidelink data transmitted by other terminals is received in the beam direction with the best quality of the received signal of the S-SSB, so that the success rate of sidelink data reception can be improved. Because the transmitting terminal transmits the S-SSB and the side link data in the same beam direction, the quality of the received signal of the S-SSB is not poor in the beam direction with the optimal quality, and the success rate of the side link data reception is improved.

in an exemplary embodiment, the terminal may further adjust the directions of the multiple first transmission beams to a same target direction, where the target direction is a beam direction used by the terminal to transmit sidelink data to the target terminal. For example, the terminal has 2 first transmission beams, which are denoted as a first transmission beam 1 and a first transmission beam 2, and if the beam direction adopted by the terminal to transmit the side link data to the target terminal is 10 degrees to 30 degrees, the terminal adjusts the direction of the first transmission beam 1 and the direction of the first transmission beam 2 to 10 degrees to 30 degrees. By the method, the plurality of S-SSBs are transmitted in the same beam direction, and the receiving effect of the S-SSBs is improved.

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 with 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 embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods. For details not disclosed in the embodiments of the apparatus of the present disclosure, refer to the embodiments of the method of the present disclosure.

Fig. 6 is a block diagram illustrating a synchronization signal configuration apparatus for V2X communication, according to an example embodiment. The device has the function of realizing the method example of the base station side, and the function can be realized by hardware or by executing corresponding software by hardware. The apparatus may be a base station or may be located in a base station. The apparatus 60 may comprise: and an information sending module 61.

an information sending module 61 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 communicating with V2X; wherein, the number of the S-SSBs refers to the number of the S-SSBs sent in one period.

optionally, referring to fig. 7, the apparatus 60 further includes: and a maximum value determining module 62 configured to determine a maximum value of the number of S-SSBs according to an operating frequency band and a beam support condition of a terminal supporting V2X communication in a cell.

Fig. 8 is a block diagram illustrating a synchronization signal configuration apparatus for V2X communication, according to another example embodiment. The apparatus has a function of implementing the above method example at the terminal side, and the function may be implemented by hardware, or may be implemented by hardware executing corresponding software. The device may be a terminal or may be provided in a terminal. The apparatus 80 may include: and an information receiving module 81.

An information receiving module 81 configured to receive S-SSB configuration information for configuring the number of S-SSBs to a terminal communicating with V2X; wherein, the number of the S-SSBs refers to the number of the S-SSBs sent in one period.

Optionally, referring to fig. 9, the apparatus 80 further includes: a number determining module 82, configured to determine a number n of first transmit beams according to the S-SSB configuration information, where the first transmit beams are beams used for transmitting S-SSBs; wherein the number n of the first transmission beams is the same as the number of the S-SSBs configured by the S-SSB configuration information, and n is a positive integer.

Optionally, referring to fig. 9, the apparatus 80 further includes: a direction determining module 83, configured to determine, when the terminal has a transmission requirement of side link data, a direction of the first transmission beam according to a direction of a second transmission beam, where the second transmission beam is a beam used for transmitting side link data; wherein a coverage of the first transmit beam overlaps with a coverage of the second transmit beam.

Optionally, referring to fig. 9, the apparatus further includes: a signal transmitting module 84 configured to transmit the S-SSB on the n first transmit beams in a beam scanning manner when there is no need for the terminal to transmit side link data.

Optionally, the apparatus 80 further comprises: a direction selection module 85 configured to determine a beam direction in which the received signal quality of the synchronization signal is optimal when the terminal receives the synchronization signal of the S-SSB in a plurality of beam directions; and a data receiving module 86 configured to receive the sidelink data transmitted by other terminals in the beam direction with the best received signal quality.

Optionally, the apparatus 80 further comprises: a direction adjusting module 87 configured to adjust directions of the plurality of first transmission beams to a same target direction; the target direction refers to a beam direction adopted by the terminal to transmit side link data to the target terminal.

An exemplary embodiment of the present disclosure also provides a synchronization signal configuration apparatus 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 by the present disclosure. The apparatus may include: a processor, and a memory for storing executable instructions for the processor. Wherein the processor is configured to:

optionally, the processor is further configured to:

And determining the maximum value of the S-SSB quantity according to the working frequency band and the beam support condition of the terminal supporting V2X communication in the cell.

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

receiving side link synchronization signal block S-SSB configuration information, wherein the S-SSB configuration information is used for configuring the number of S-SSBs to a terminal communicated with V2X;

optionally, the processor is further configured to:

Determining the number n of first sending beams according to the S-SSB configuration information, wherein the first sending beams are beams used for sending S-SSB;

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

optionally, the processor is further configured to:

If the terminal has a side link data transmission requirement, the terminal determines the direction of the first transmission beam according to the direction of a second transmission beam, wherein the second transmission beam is a beam used for transmitting side link data;

Wherein a coverage of the first transmit beam overlaps with a coverage of the second transmit beam.

Optionally, if the number of the first transmission beams is smaller than the number of the second transmission beams, at least one first transmission beam exists, and a coverage area of the first transmission beam overlaps with a coverage area of a plurality of second transmission beams.

Optionally, the processor is further configured to:

And if the terminal does not have the transmission requirement of the side link data, the terminal adopts a beam scanning mode to transmit the S-SSB on the n first transmission beams.

Optionally, the processor is further configured to:

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

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

Optionally, the processor is further configured to:

The terminal adjusts the directions of a plurality of first transmitting beams for transmitting the S-SSB to the same target direction;

the target direction refers to a beam direction adopted by the terminal to transmit side link data to the target terminal.

the above description mainly introduces the scheme provided by the embodiments of the present disclosure from the perspective of the terminal and the base station. It is to be understood that the terminal and the base station include corresponding hardware structures and/or software modules for performing the respective functions in order to implement the above-described functions. The elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein may be embodied in hardware or in a combination of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

Fig. 10 is a schematic diagram illustrating a structure of 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 be a controller, and is shown as "controller/processor 1002" in fig. 10. The transmitter/receiver 1001 is used to support information transceiving between a base station and the terminal in the above embodiments, and to support communication between the base station and other network entities. The processor 1002 performs various functions for communicating with the terminals. On the uplink, uplink signals from the terminal are received via the antenna, demodulated by a receiver 1001 (e.g., to demodulate high frequency signals to baseband signals), and further processed by a processor 1002 to recover the traffic data and signaling information sent by the terminal. On the downlink, traffic data and signaling messages are processed by processor 1002 and modulated (e.g., by modulating a baseband signal to a high frequency signal) by transmitter 1001 to generate a downlink signal, which is transmitted via the antenna to the terminals. It is noted that the above demodulation or modulation functions may also be performed by the processor 1002. For example, the processor 1002 is further configured to perform various steps on the base station side in the above-described method embodiments, and/or other steps of the technical solutions described in the embodiments of the present disclosure.

Further, the base station 1000 may also comprise a memory 1003, the memory 1003 being used for storing program codes and data of the base station 1000. The base station may further include a communication unit 1004. The communication unit 1004 is used to support the base station to communicate with other network entities (e.g., network devices in a core network, etc.). For example, in the 5G NR system, the communication unit 1004 may be an NG-U interface for supporting a base station to communicate with a UPF (User Plane Function) entity; alternatively, the communication unit 1004 may also be an NG-C interface, which is used to support Access to an AMF (Access and mobility management Function) entity for communication.

It will be appreciated 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 scope of the embodiments of the present disclosure.

fig. 11 is a block diagram of a terminal according to an example embodiment.

The terminal 1100 comprises a transmitter 1101, a receiver 1102 and a processor 1103. The processor 1103 may also be a controller, which is shown 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 conditions (e.g., converts to analog, filters, amplifies, and frequency upconverts, etc.) the output samples and generates an uplink signal, which is transmitted via an antenna to a base station. On the downlink, an antenna receives a downlink signal transmitted by a base station. Receiver 1102 conditions (e.g., filters, amplifies, downconverts, and digitizes, etc.) the received signal from the antenna and provides input samples. In modem processor 1105, an encoder 1106 receives traffic data and signaling messages to be transmitted on the uplink and processes (e.g., formats, encodes, and interleaves) the traffic data and signaling messages. A modulator 1107 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples. A demodulator 1109 processes (e.g., demodulates) the input samples and provides symbol estimates. A decoder 1108 processes (e.g., deinterleaves and decodes) the symbol estimates and provides decoded data and signaling messages for transmission to terminal 1100. Encoder 1106, modulator 1107, demodulator 1109, and decoder 1108 may be implemented by a combined modem processor 1105. These units handle according to the radio access technology employed by the radio access network (e.g., 5G NR and access technologies of other evolved systems). Note that when terminal 1100 does not include modem processor 1105, the above-described functions of modem processor 1105 may also be performed by processor 1103.

The processor 1103 performs control management on the actions of the terminal 1100, and is configured to perform the processing procedures performed by the terminal 1100 in the embodiments of the present disclosure. For example, the processor 1103 is further configured to perform various steps of the terminal side in the above-described method embodiments, and/or other steps of the technical solutions described in the embodiments of the present disclosure.

Further, terminal 1100 can also include a memory 1104, memory 1104 for storing program codes and data for terminal 1100.

it is to be understood that fig. 11 merely illustrates a simplified design of terminal 1100. In practical applications, terminal 1100 may comprise any number of transmitters, receivers, processors, modem processors, memories, etc., and all terminals that may implement embodiments of the present disclosure are within the scope of the embodiments of the present disclosure.

The disclosed embodiments also provide a non-transitory computer readable storage medium, on which a computer program is stored, which, when executed by a processor of a base station, implements the steps of the above-described synchronization signal configuration method for V2X communication on the base station side.

the disclosed embodiments also provide a non-transitory computer-readable storage medium on which a computer program is stored, which, when executed by a processor of a terminal, implements the steps of the above-described synchronization signal configuration method of V2X communication on the terminal side.

It should be understood that reference to "a plurality" herein means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for configuring synchronization signals for V2X communication, the method comprising:

a base station sends side link synchronization signal block S-SSB configuration information, wherein the S-SSB configuration information is used for configuring the number of S-SSBs to a terminal communicated with V2X;

2. the method of claim 1, wherein the base station supports providing different S-SSB configuration information in different scenarios.

3. The method of claim 1, further comprising:

and the base station determines the maximum value of the S-SSB quantity according to the working frequency band and the beam supporting condition of the terminal supporting V2X communication in the cell.

4. The method of 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.

5. A method for configuring synchronization signals for V2X communication, the method comprising:

The terminal receives side link synchronization signal block S-SSB configuration information, and the S-SSB configuration information is used for configuring the number of S-SSBs to the terminal communicated with V2X;

6. The method of claim 5, further comprising:

the terminal determines the number n of first sending beams according to the S-SSB configuration information, wherein the first sending beams are beams used for sending S-SSB;

7. the method of claim 6, further comprising:

8. the method of claim 7, wherein if the number of the first transmission beams is the same as the number of the second transmission beams, the first transmission beams and the second transmission beams are in one-to-one correspondence, and the directions of the corresponding first transmission beams and the second transmission beams are the same.

9. The method of claim 7, wherein if the number of the first transmission beams is less than the number of the second transmission beams, there is at least one of the first transmission beams having a coverage area that overlaps with a coverage area of a plurality of the second transmission beams.

10. the method of claim 6, further comprising:

11. The method according to any one of claims 5 to 10, further comprising:

12. the method according to any one of claims 5 to 10, further comprising:

The terminal adjusts the directions of a plurality of first transmitting beams to the same target direction, wherein the first transmitting beams are beams used for transmitting S-SSB;

13. a synchronization signal configuration device for V2X communication, applied in a base station, the device comprising:

an information sending module configured to send sidelink synchronization signal block S-SSB configuration information, the S-SSB configuration information being used for configuring the number of S-SSBs to a terminal communicating with V2X;

14. The apparatus of claim 13, wherein the base station supports providing different S-SSB configuration information in different scenarios.

15. The apparatus of claim 13, further comprising:

And the maximum value determining module is configured to determine the maximum value of the number of the S-SSBs according to the working frequency band and the beam supporting situation of the terminal supporting V2X communication in the cell.

16. The apparatus of claim 15, wherein the maximum number of SSBs is an integer multiple of the number of S-SSBs configured by the S-SSB configuration information.

17. A synchronization signal configuration device for V2X communication, applied in a terminal, the device comprising:

An information receiving module configured to receive side link synchronization signal block S-SSB configuration information, the S-SSB configuration information being used to configure the number of S-SSBs to a terminal communicating with V2X;

18. The apparatus of claim 17, further comprising:

A number determining module configured to determine a number n of first transmission beams according to the S-SSB configuration information, the first transmission beams being beams used for transmitting S-SSBs;

19. the apparatus of claim 18, further comprising:

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

20. the apparatus of claim 19, wherein if the number of the first transmission beams is the same as the number of the second transmission beams, the first transmission beams and the second transmission beams have a one-to-one correspondence, and the directions of the corresponding first transmission beams and second transmission beams are the same.

21. The apparatus of claim 19, wherein if the number of the first transmission beams is less than the number of the second transmission beams, there is at least one of the first transmission beams having a coverage area that overlaps with a coverage area of a plurality of the second transmission beams.

22. The apparatus of claim 18, further comprising:

A signal transmitting module configured to transmit the S-SSB on the n first transmit beams in a beam scanning manner when the terminal does not have a transmission requirement for side link data.

23. the apparatus of any one of claims 17 to 22, further comprising:

A direction selection module configured to determine a beam direction in which a received signal quality of a synchronization signal is optimal when the terminal receives the synchronization signal of the S-SSB in a plurality of beam directions;

And the data receiving module is configured to receive the sidelink data transmitted by other terminals in the beam direction with the optimal received signal quality.

24. The apparatus of any one of claims 17 to 22, further comprising:

A direction adjusting module configured to adjust directions of a plurality of first transmission beams to a same target direction, the first transmission beams being beams for transmitting S-SSB;

25. A synchronization signal configuration device for V2X communication, applied in a base station, the device comprising:

A 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, wherein the S-SSB configuration information is used for configuring the number of S-SSBs to a terminal communicated by V2X;

26. a synchronization signal configuration device for V2X communication, applied in a terminal, the device comprising:

A processor;

A memory for storing executable instructions of the processor;

Wherein the processor is configured to:

27. A non-transitory computer readable storage medium, having stored thereon a computer program, wherein the computer program, when executed by a processor, implements the steps of the method according to any one of claims 1 to 4, or implements the steps of the method according to any one of claims 5 to 12.