CN111132301B - Method and device for transmitting synchronization information - Google Patents

Abstract

Embodiments of the present invention provide a method and device for transmitting synchronization information, wherein the method includes: acquiring an environment where a sending terminal is located and/or a synchronization source of the sending terminal, wherein the synchronization source of the sending terminal is a global navigation satellite system GNSS , Long Term Evolution evolved base station LTE-eNB, wireless access 5G base station NR-gNB or terminal; According to the environment where the transmitting terminal is located and/or the synchronization source of the transmitting terminal, determine the synchronization type of the transmitting terminal; According to The synchronization type of the sending terminal determines the synchronization indication information used to indicate the synchronization type and the synchronization resource used to transmit the synchronization indication information; the synchronization indication information is sent to the receiving terminal through the synchronization resource, so that the receiving terminal determines the synchronization type of the sending terminal according to the synchronization indication information. The embodiment of the present invention realizes NR V2X-oriented synchronization source indication and transmission.

Description

Method and device for transmitting synchronization information

technical field

Embodiments of the present invention relate to the field of communication technologies, and in particular, to a method and device for transmitting synchronization information.

Background technique

At present, in order to meet the advanced Vehicle to Everything (V2X) service, it is necessary to study the side link synchronization mechanism of 5G-oriented wireless access-New Radio Vehicle to Everything (NR V2X). Among them, in the Long Term Evolution Vehicle to Everything (LTE V2X) system, the Sidelink Synchronization Signal (SLSS) and the Physical Sidelink Broadcast Channel (PSBCH) are used for Synchronized on the side link.

集合表示，且

集合(包括0-335同步ID)分为id_net和id_oon两组，其中集合id_net包含0-167同步ID，集合id_oon包含168-335同步ID。其中，PSSS信号的生成与同步ID属于id_net集合或id_oon集合有关，如果同步ID属于id_net集合，则由根序列u＝26生成ZC同步信号；如果同步ID属于id_oon集合，则由根序号u＝37生成同步信号。The SLSS includes a primary sidelink synchronization signal (Primary Sidelink Synchronization Signal, PSSS) and a secondary sidelink synchronization signal (Secondary Sidelink Synchronization Signal, SSSS). Additionally, the physical side link sync ID is given by

set representation, and

Sets (including 0-335 sync IDs) are divided into two groups: id_net and id_oon, where set id_net contains 0-167 sync IDs, and set id_oon contains 168-335 sync IDs. Among them, the generation of the PSSS signal is related to the synchronization ID belonging to the id_net set or the id_oon set. If the synchronization ID belongs to the id_net set, the ZC synchronization signal is generated by the root sequence u=26; if the synchronization ID belongs to the id_oon set, then the root sequence number u=37 Generate a sync signal.

In addition, in the LTE V2X system, the period of the side link synchronization resources is 160ms, and the core network can configure up to three synchronization resources for transmitting synchronization information: Resource1, Resource2 and Resource3. Resource is given by the parameter SL-OffsetIndicatorSync, that is, the frame number and subframe number used to transmit synchronization information must satisfy (frame number×10+subframe number) mod 160=SL-OffsetIndicatorSync. In addition, in the LTE V2X system, the PSBCH carries a Master Information Block (MIB), and whether the value of inCoverage is 1 in the MIB indicates whether the terminal transmitting the PSBCH is in the Evolved UMTS Terrestrial Radio Access Network (Evolved). UMTS Terrestrial RadioAccess Network) coverage.

To sum up, in the LTE V2X system, two sets of physical side link synchronization IDs, id_net and id_oon, whether the parameter inCoverage is 1, and the synchronization resources Resource1, Resource2 and Resource3 are used to indicate the synchronization source contained in the terminal in the side link. information. However, in the NR V2X system, the NR-gNB also acts as a synchronization source, and the NR side link can be controlled by the LTE Uu port and the NR Uu port. Therefore, for NR V2X side link communication, in order to support more V2X application scenarios, NR V2X-oriented synchronization source indication and transmission methods need to be designed.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a method and apparatus for transmitting synchronization information, so as to realize NR V2X-oriented synchronization source indication and transmission.

In order to implement NR V2X-oriented synchronization source indication and transmission, in the first aspect, this embodiment provides a method for transmitting synchronization information, the method including:

Obtain the environment where the transmitting terminal is located and/or the synchronization source of the transmitting terminal, wherein the synchronization source of the transmitting terminal is the global navigation satellite system GNSS, the long-term evolution evolved base station LTE-eNB, the wireless access 5G base station NR-gNB or terminal;

determining the synchronization type of the sending terminal according to the environment where the sending terminal is located and/or the synchronization source of the sending terminal;

determining, according to the synchronization type of the sending terminal, synchronization indication information for indicating the synchronization type and synchronization resources for transmitting the synchronization indication information;

The synchronization indication information is sent to the receiving terminal through the synchronization resource, so that the receiving terminal determines the synchronization type of the transmitting terminal according to the synchronization indication information.

In a second aspect, an embodiment of the present invention provides an apparatus for transmitting synchronization information, and the apparatus includes:

The acquisition module is used to acquire the environment where the transmitting terminal is located and/or the synchronization source of the transmitting terminal, wherein the synchronization source of the transmitting terminal is the global navigation satellite system GNSS, the long-term evolution evolved base station LTE-eNB, the wireless access 5G Base station NR-gNB or terminal;

a first determining module, configured to determine the synchronization type of the sending terminal according to the environment where the sending terminal is located and/or the synchronization source of the sending terminal;

a second determining module, configured to determine synchronization indication information for indicating the synchronization type and synchronization resources for transmitting the synchronization indication information according to the synchronization type of the sending terminal;

A sending module, configured to send the synchronization indication information to the receiving terminal through the synchronization resource, so that the receiving terminal determines the synchronization type of the transmitting terminal according to the synchronization indication information.

In a third aspect, an embodiment of the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the synchronization when executing the computer program The steps of a method of transmitting information.

In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the steps of the synchronization information transmission method.

The method and device for transmitting synchronization information provided by the embodiments of the present invention determine the synchronization type of the transmitting terminal according to the environment where the transmitting terminal is located and/or the synchronization source of the transmitting terminal, wherein the synchronization source is GNSS, LTE-eNB, NR-gNB or terminal, and according to the synchronization type of the sending terminal, determine the synchronization indication information used to indicate the synchronization type and the synchronization resource used to transmit the synchronization indication information, and finally send the synchronization indication information to the receiving terminal through the synchronization resource, so that the receiving terminal The synchronization type of the sending terminal is determined according to the synchronization indication information, thereby realizing the indication and transmission of synchronization source information in the NR V2X system, thereby enabling more V2X application scenarios to be supported.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 shows a flowchart of steps of a method for transmitting synchronization information in an embodiment of the present invention;

Fig. 2 shows the module block diagram of the transmission device of synchronization information in the embodiment of the present invention;

FIG. 3 is a schematic diagram of a physical structure of an electronic device in an embodiment of the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1 , it is a flowchart of steps of a method for transmitting synchronization information in an embodiment of the present invention, and the method includes the following steps:

Step 101: Obtain the environment where the sending terminal is located and/or the synchronization source of the sending terminal.

In this step, specifically, before determining the synchronization indication information, the sending terminal needs to obtain the environment where it is located and/or the synchronization source of the sending terminal.

The synchronization source of the transmitting terminal may be a Global Navigation Satellite System (GNSS for short), an evolved base station for long term evolution (LTE-eNB for short), a 5G base station for wireless access (NR-gNB for short), or a terminal.

In addition, specifically, the environment in which the sending terminal is located may be located within the coverage of the evolved UMTS terrestrial radio access network (referred to as E-UTRAN), and within the coverage of the wireless access radio access network (referred to as NG-RAN) within or outside the coverage of E-UTRAN and NG-RAN.

Step 102: Determine the synchronization type of the sending terminal according to the environment where the sending terminal is located and/or the synchronization source of the sending terminal.

Specifically in this step, after acquiring the environment where the sending terminal is located and/or the synchronization source of the sending terminal, the synchronization type of the sending terminal can be determined according to the environment where the sending terminal is located and/or the synchronization source of the sending terminal, so that The synchronization indication information sent to the receiving terminal can be determined according to the synchronization type of the sending terminal.

Step 103: Determine synchronization indication information for indicating the synchronization type and synchronization resources for transmitting the synchronization indication information according to the synchronization type of the sending terminal.

In this step, specifically, after the synchronization type of the sending terminal is determined, the synchronization indication information used to indicate the synchronization type and the synchronization resource used to transmit the synchronization indication information may be determined according to the synchronization type of the transmission terminal, so that the synchronization The resource sends the determined synchronization indication information corresponding to the synchronization type to the receiving terminal, which realizes the transmission of the synchronization indication information in the NR V2X system.

Step 104: Send the synchronization indication information to the receiving terminal through the synchronization resource.

In this step, the sending terminal may send the determined synchronization indication information for indicating the synchronization type to the receiving terminal through the synchronization resource, so that the receiving terminal can determine the synchronization type of the sending terminal according to the received synchronization indication information, and then determine The environment where the terminal is located and/or the synchronization source of the transmission terminal is sent, thereby realizing the synchronization process between the terminals.

In this way, in this embodiment, the synchronization source of the transmitting terminal may be GNSS, LTE-eNB, NR-gNB or a terminal, and the synchronization type of the transmitting terminal is determined according to the environment where the transmitting terminal is located and/or the synchronization source of the transmitting terminal , and according to the synchronization type of the sending terminal, determine the synchronization indication information used to indicate the synchronization type and the synchronization resource used to transmit the synchronization indication information, and finally send the synchronization indication information to the receiving terminal through the synchronization resource, realizing the NR V2X system. , the indication and transmission of synchronization source information, thereby enabling more V2X application scenarios to be supported.

Further, the synchronization indication information includes a synchronization source identifier of the sending terminal and an inCoverage parameter in a master information block (MIB for short), wherein the synchronization source identifier is selected from a synchronization source set, and the synchronization source set includes Four sets; the inCoverage parameter is a 2-bit value.

For example, the inCoverage parameter may consist of numbers 0 and 1; in addition, the set of synchronization sources may include a first set of synchronization sources, a second set of synchronization sources, a third set of synchronization sources, and a fourth set of synchronization sources, where the first set of synchronization sources may Named id_lte_net, and the range of synchronization source IDs in the set is 0-167; the second sync source set can be named id_lte_oon, and the range of sync source IDs in the set is 168-335; the third sync source set can be named id_nr_net, And the synchronization source identifiers in the set are 335-501; the fourth synchronization source set may be named id_nr_oon, and the synchronization source identifiers in the set are 502-671.

In addition, specifically, the following describes determining the synchronization type of the sending terminal according to the environment where the sending terminal is located and/or the synchronization source of the sending terminal, and determining the synchronization type used to indicate the sending terminal according to the synchronization type of the sending terminal. The synchronization indication information of the synchronization type and the synchronization resources used to transmit the synchronization indication information are described.

First, when the environment where the sending terminal is located is within the coverage of the Evolved UMTS Terrestrial Radio Access Network (E-UTRAN for short), and the synchronization source of the sending terminal is LTE-eNB, determine the sending terminal. The synchronization type of the terminal is the first type. At this time, when the synchronization type of the sending terminal is the first type, it is determined that the synchronization source identifier of the sending terminal is any identifier except the first synchronization source identifier in the first synchronization source set, and the The value of the inCoverage parameter is a first sequence combination of a 2-bit value, and the synchronization resource used for transmitting the synchronization indication information is the first resource;

Specifically, the first sequence combination of the inCoverage parameter may be 01.

Second, when the environment where the sending terminal is located is within the coverage of the wireless access network NG-RAN, and the synchronization source of the sending terminal is NR-gNB, determine the synchronization of the sending terminal. The type is the second type; at this time, when the synchronization type of the sending terminal is the second type, it is determined that the synchronization source identifier of the sending terminal is any identifier in the third synchronization source set, and the inCoverage parameter The value is a second sequence combination of a 2-bit value, and the synchronization resource used for transmitting the synchronization indication information is the first resource.

Specifically, the second sequence combination of the inCoverage parameter may be 10.

Third, when the synchronization source of the sending terminal is GNSS, determine that the synchronization type of the sending terminal is the third type; at this time, when the synchronization type of the sending terminal is the third type, determine that the sending terminal is of the third type. The synchronization source identifier is the first synchronization source identifier in the first synchronization source set, and the value of the inCoverage parameter is a third sequence combination of a 2-bit value, and the synchronization resource used to transmit the synchronization indication information is the first a resource.

Specifically, the third sequence combination of the inCoverage parameter may be 11.

In addition, the first synchronization source identifier in the specific first synchronization source set may be 0.

Fourth, when the synchronization source of the sending terminal is the first terminal, determine that the synchronization type of the sending terminal is the fourth type; wherein the synchronization type of the first terminal is the first type, the second type or the first type. three types; at this time, when the synchronization type of the sending terminal is the fourth type, it is determined that the synchronization source identifier of the sending terminal is the same as the synchronization source identifier of the first terminal, and the value of the inCoverage parameter is 2 a fourth sequence combination of bit values, and the synchronization resource used for transmitting the synchronization indication information is the second resource.

Specifically, the fourth sequence combination of the inCoverage parameter may be 00.

In addition, specifically, assuming that the first terminal of the first type is A, the first terminal of the second type is B, and the first terminal of the third type is C, when the synchronization source of the sending terminal is A, B or C , the synchronization type of the transmitting terminal is the fourth type; in addition, when the synchronization source of the transmitting terminal of the fourth type is A, the synchronization source identification of the transmitting terminal is the same as the synchronization source identification of A; When the synchronization source of the sending terminal is B, the synchronization source identifier of the sending terminal is the same as that of B; when the synchronization source of the fourth type of sending terminal is C, the synchronization source identifier of the sending terminal is the same as that of C.

Fifth, when the synchronization source of the sending terminal is the second terminal, it is determined that the synchronization type of the sending terminal is the fifth type; wherein, the synchronization type of the second terminal is the fourth type; When the synchronization type of the sending terminal is the fifth type, determine that the synchronization source identifier of the sending terminal is the sum of the total number of synchronization source identifiers in the first synchronization source set and the synchronization source identifier of the second terminal, or is the sum of the total number of synchronization source identifiers in the third synchronization source set and the synchronization source identifier of the second terminal, and the value of the inCoverage parameter is a fourth sequence combination of a 2-bit value, and is used to transmit all The synchronization resource of the synchronization indication information is the first resource.

For example, assuming that the second terminal of the fourth type is D, when the synchronization source of the transmitting terminal is D, the synchronization type of the transmitting terminal is the fifth type. At this time, it is assumed that the total number of synchronization source identifiers in the first synchronization source set is 168, and the total number of synchronization source identifiers in the third synchronization source set is 168, then the synchronization source identifier of the sending terminal is the synchronization source identifier of D and 168 , or the sum of D's synchronization source ID and 168.

Sixth, when the environment where the sending terminal is located is outside the coverage of E-UTRAN and NG-RAN, and the synchronization source of the sending terminal is not the terminal and GNSS, determine that the synchronization type of the sending terminal is the first Six types; at this time, when the synchronization type of the sending terminal is the sixth type, it is determined that the synchronization source identifier of the sending terminal is any synchronization source identifier in the second synchronization source set or the fourth synchronization source set, and The value of the inCoverage parameter is a fourth sequence combination of a 2-bit value, and the synchronization resource used for transmitting the synchronization indication information is the first resource or the second resource.

Seventh, when the synchronization source of the sending terminal is the third terminal or the fourth terminal, determine that the synchronization type of the sending terminal is the seventh type, or when the synchronization source of the sending terminal is the fifth terminal, determine The synchronization type of the sending terminal is the seventh type; the synchronization type of the third terminal is the fifth type, the synchronization type of the fourth terminal is the sixth type, and the synchronization type of the fifth terminal is the seventh type type. At this time, when the synchronization type of the sending terminal is the seventh type, it is determined that the synchronization source identifier of the sending terminal is the same as the synchronization source identifier of the synchronization source of the sending terminal, and the value of the inCoverage parameter is 2 bits The fourth sequence combination of numerical values, and the synchronization resources used for transmitting the synchronization indication information are the first resource and the second resource, which are different from the resources used for transmitting the synchronization indication information of the synchronization source of the sending terminal resource.

For example, if the synchronization source of the sending terminal is the third terminal, it is determined that the synchronization source identifier of the sending terminal is the same as the synchronization source identifier of the third terminal, and the value of the inCoverage parameter is a fourth sequence of 2-bit values. combination, and the synchronization resource used for transmitting the synchronization indication information is the second resource; if the synchronization source of the sending terminal is the fourth terminal, determine the synchronization source identifier of the sending terminal and the synchronization source identifier of the fourth terminal is the same, and the value of the inCoverage parameter is a fourth sequence combination of a 2-bit value, and the synchronization resource used for transmitting the synchronization indication information is the same as the one used for transmitting the fourth terminal in the first resource and the second resource. A resource that is not identical to the resource of the synchronization indication information.

Specifically, when the resource used to transmit the synchronization indication information of the fourth terminal is the first resource, the synchronization resource used to transmit the synchronization indication information of the seventh type of sending terminal is the second resource; When the resource of the synchronization indication information of the four terminals is the second resource, the synchronization resource used for transmitting the synchronization indication information of the seventh type of the sending terminal is the first resource.

In this way, this embodiment realizes the confirmation and indication of the synchronization type of the sending terminal in the above-mentioned manner, that is, confirms the confirmation and indication of the environment where the sending terminal is located and/or the synchronization source of the sending terminal, thereby realizing that in the NR V2X system, the Synchronize the indication and transmission of source information, thereby enabling more V2X application scenarios to be supported.

As shown in FIG. 2, it is a block diagram of a module of an apparatus for transmitting synchronization information in an embodiment of the present invention, and the apparatus includes:

The acquisition module 201 is configured to acquire the environment where the transmitting terminal is located and/or the synchronization source of the transmitting terminal, wherein the synchronization source of the transmitting terminal is the Global Navigation Satellite System GNSS, the Long Term Evolution LTE-eNB, the wireless access 5G base station NR-gNB or terminal;

a first determining module 202, configured to determine the synchronization type of the sending terminal according to the environment where the sending terminal is located and/or the synchronization source of the sending terminal;

A second determining module 203, configured to determine, according to the synchronization type of the sending terminal, synchronization indication information for indicating the synchronization type and synchronization resources for transmitting the synchronization indication information;

The sending module 204 is configured to send the synchronization indication information to the receiving terminal through the synchronization resource, so that the receiving terminal determines the synchronization type of the transmitting terminal according to the synchronization indication information.

Optionally, the first determining module 202 includes:

a first determining unit, configured to determine the sending terminal when the environment where the sending terminal is located is within the coverage of the evolved UMTS terrestrial radio access network E-UTRAN and the synchronization source of the sending terminal is LTE-eNB The synchronization type of the sending terminal is the first type;

The second determining unit is configured to determine the sending terminal when the environment where the sending terminal is located is within the coverage of the wireless access network NG-RAN and the synchronization source of the sending terminal is NR-gNB The synchronization type of the sending terminal is the second type;

a third determining unit, configured to determine that the synchronization type of the transmitting terminal is the third type when the synchronization source of the transmitting terminal is GNSS;

a fourth determining unit, configured to determine that the synchronization type of the transmitting terminal is the fourth type when the synchronization source of the transmitting terminal is the first terminal; wherein the synchronization type of the first terminal is the first type, the first type Type II or Type III;

a fifth determining unit, configured to determine that the synchronization type of the sending terminal is the fifth type when the synchronization source of the sending terminal is the second terminal; wherein the synchronization type of the second terminal is the fourth type;

A sixth determination unit, configured to determine the transmission terminal's synchronization source when the environment where the transmission terminal is located is outside the coverage of E-UTRAN and NG-RAN, and the synchronization source of the transmission terminal is not the terminal and GNSS. The synchronization type is the sixth type;

A seventh determining unit, configured to determine that the synchronization type of the sending terminal is the seventh type when the synchronization source of the sending terminal is the third terminal or the fourth terminal, or when the synchronization source of the sending terminal is the fifth terminal terminal, determine that the synchronization type of the sending terminal is the seventh type; wherein the synchronization type of the third terminal is the fifth type, the synchronization type of the fourth terminal is the sixth type, and the synchronization type of the fifth terminal Type is the seventh type.

Optionally, the synchronization indication information includes a synchronization source identifier of the sending terminal and an inCoverage parameter in the main information block MIB, wherein the synchronization source identifier is selected from a synchronization source set, and the synchronization source set includes four. set; the inCoverage parameter is a 2-bit value; wherein,

The second determining module 203 includes:

An eighth determining unit, configured to determine that the synchronization source identifier of the sending terminal is any identifier except the first synchronization source identifier in the first synchronization source set when the synchronization type of the sending terminal is the first type , and the value of the inCoverage parameter is a first sequence combination of a 2-bit value, and the synchronization resource used for transmitting the synchronization indication information is the first resource;

A ninth determination unit, configured to determine that the synchronization source identifier of the sending terminal is any identifier in the third synchronization source set when the synchronization type of the sending terminal is the second type, and the value of the inCoverage parameter is a second sequence combination of 2-bit values, and the synchronization resource used for transmitting the synchronization indication information is the first resource;

A tenth determining unit, configured to determine that the synchronization source identifier of the sending terminal is the first synchronization source identifier in the first synchronization source set when the synchronization type of the sending terminal is the third type, and the inCoverage parameter is a third sequence combination of a 2-bit value, and the synchronization resource used to transmit the synchronization indication information is the first resource;

An eleventh determining unit, configured to determine that, when the synchronization type of the sending terminal is the fourth type, the synchronization source identifier of the sending terminal is the same as the synchronization source identifier of the first terminal, and the value of the inCoverage parameter is the same as that of the first terminal. is a fourth sequence combination of a 2-bit value, and the synchronization resource used for transmitting the synchronization indication information is the second resource;

A twelfth determination unit, configured to determine, when the synchronization type of the sending terminal is the fifth type, that the synchronization source identifier of the sending terminal is the total number of synchronization source identifiers in the first synchronization source set and the second synchronization source identifier. The sum of the synchronization source identifiers of the terminal, or the sum of the total number of synchronization source identifiers in the third synchronization source set and the synchronization source identifier of the second terminal, and the value of the inCoverage parameter is a 2-bit value. the fourth sequence combination, and the synchronization resource used for transmitting the synchronization indication information is the first resource;

A thirteenth determining unit, configured to determine that the synchronization source identifier of the sending terminal is any synchronization source identifier in the second synchronization source set or the fourth synchronization source set when the synchronization type of the sending terminal is the sixth type , and the value of the inCoverage parameter is a fourth sequence combination of a 2-bit value, and the synchronization resource used to transmit the synchronization indication information is the first resource or the second resource;

A fourteenth determining unit, configured to determine that, when the synchronization type of the sending terminal is the seventh type, determine that the synchronization source identifier of the sending terminal is the same as the synchronization source identifier of the synchronization source of the sending terminal, and the inCoverage parameter The value of is a fourth sequence combination of 2-bit values, and the synchronization resources used for transmitting the synchronization indication information are the first resource and the second resource, and the synchronization indication information used for transmitting the synchronization source of the sending terminal. A resource that is not the same as a resource.

The apparatus for transmitting synchronization information provided in this embodiment determines the synchronization type of the transmitting terminal according to the environment where the transmitting terminal is located and/or the synchronization source of the transmitting terminal, wherein the synchronization source is GNSS, LTE-eNB, NR-gNB or terminal, And according to the synchronization type of the sending terminal, determine the synchronization instruction information used to indicate the synchronization type and the synchronization resource used to transmit the synchronization instruction information, and finally send the synchronization instruction information to the receiving terminal through the synchronization resource, so that the receiving terminal can perform the synchronization instruction according to the synchronization instruction. The information determines the synchronization type of the sending terminal, thereby realizing the indication and transmission of synchronization source information in the NR V2X system, thereby enabling more V2X application scenarios to be supported.

In addition, as shown in FIG. 3 , which is a schematic diagram of an entity structure of an electronic device provided by an embodiment of the present invention, the electronic device may include: a processor (processor) 310, a communications interface (Communications Interface) 320, a memory (memory) 330, and a communication The bus 340, wherein the processor 310, the communication interface 320, and the memory 330 complete the communication with each other through the communication bus 340. The processor 310 may call a computer program stored in the memory 330 and run on the processor 310 to execute the methods provided in the above embodiments, for example, including: acquiring the environment where the transmitting terminal is located and/or the synchronization source of the transmitting terminal, The synchronization source of the sending terminal is the global navigation satellite system GNSS, the long-term evolution LTE-eNB, the wireless access 5G base station NR-gNB or the terminal; according to the environment where the sending terminal is located and/or the sending terminal determine the synchronization type of the sending terminal; according to the synchronization type of the sending terminal, determine the synchronization indication information used to indicate the synchronization type and the synchronization resource used to transmit the synchronization indication information; synchronization resources, and send the synchronization indication information to the receiving terminal, so that the receiving terminal determines the synchronization type of the transmitting terminal according to the synchronization indication information.

In addition, the above-mentioned logic instructions in the memory 330 may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present invention can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .

Embodiments of the present invention also provide a non-transitory computer-readable storage medium on which a computer program is stored, and the computer program is implemented when executed by a processor to execute the methods provided in the above-mentioned embodiments, for example, including: obtaining the data of the sending terminal. environment and/or the synchronization source of the transmitting terminal, wherein the synchronization source of the transmitting terminal is the Global Navigation Satellite System GNSS, the Long Term Evolution LTE-eNB, the wireless access 5G base station NR-gNB or the terminal; The environment where the sending terminal is located and/or the synchronization source of the sending terminal, determine the synchronization type of the sending terminal; according to the synchronization type of the sending terminal, determine the synchronization indication information used to indicate the synchronization type and the synchronization indication information used to transmit the The synchronization resource of the synchronization indication information; the synchronization indication information is sent to the receiving terminal through the synchronization resource, so that the receiving terminal determines the synchronization type of the sending terminal according to the synchronization indication information.

The device embodiments described above are only illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.

From the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on this understanding, the above-mentioned technical solutions can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic A disc, an optical disc, etc., includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (6)

1. A method for transmitting synchronization information, the method comprising:

acquiring the environment of a sending terminal and/or a synchronous source of the sending terminal, wherein the synchronous source of the sending terminal is a Global Navigation Satellite System (GNSS), a long-term evolution evolved node B (LTE-eNB), a wireless accessed 5G base station (NR-gNB) or a terminal;

determining the synchronization type of the sending terminal according to the environment of the sending terminal and/or the synchronization source of the sending terminal;

according to the synchronization type of the sending terminal, determining synchronization indication information used for indicating the synchronization type and synchronization resources used for transmitting the synchronization indication information;

sending the synchronization indication information to a receiving terminal through the synchronization resource so that the receiving terminal determines the synchronization type of the sending terminal according to the synchronization indication information;

wherein, the determining the synchronization type of the sending terminal according to the environment of the sending terminal and/or the synchronization source of the sending terminal includes:

when the environment of the sending terminal is in the coverage range of an evolved Universal Mobile Telecommunications System (UMTS) terrestrial radio access network (E-UTRAN) and the synchronization source of the sending terminal is an LTE-eNB, determining that the synchronization type of the sending terminal is a first type;

when the environment of the sending terminal is in the coverage range of a radio access network (NG-RAN) of wireless access and the synchronization source of the sending terminal is NR-gNB, determining that the synchronization type of the sending terminal is a second type;

when the synchronization source of the sending terminal is GNSS, determining that the synchronization type of the sending terminal is a third type;

when the synchronization source of the sending terminal is the first terminal, determining that the synchronization type of the sending terminal is a fourth type; the synchronization type of the first terminal is a first type, a second type or a third type;

when the synchronization source of the sending terminal is a second terminal, determining that the synchronization type of the sending terminal is a fifth type; the synchronization type of the second terminal is a fourth type;

when the environment of the sending terminal is out of the coverage range of E-UTRAN and NG-RAN and the synchronization source of the sending terminal is not a terminal and GNSS, determining that the synchronization type of the sending terminal is a sixth type;

when the synchronization source of the sending terminal is a third terminal or a fourth terminal, determining that the synchronization type of the sending terminal is a seventh type, or when the synchronization source of the sending terminal is a fifth terminal, determining that the synchronization type of the sending terminal is the seventh type; the synchronization type of the third terminal is a fifth type, the synchronization type of the fourth terminal is a sixth type, and the synchronization type of the fifth terminal is a seventh type.

2. The method of claim 1, wherein the synchronization indication information includes a synchronization source identifier of the sending terminal and an coverage parameter in a master information block MIB, wherein the synchronization source identifier is selected from a synchronization source set, and the synchronization source set includes four sets; the noncoverage parameter is a 2-bit numerical value; wherein,

the determining, according to the synchronization type of the sending terminal, synchronization indication information for indicating the synchronization type and synchronization resources for transmitting the synchronization indication information includes:

when the synchronization type of the sending terminal is a first type, determining that a synchronization source identifier of the sending terminal is any identifier except a first synchronization source identifier in a first synchronization source set, and the value of the coverage parameter is a first sequence combination of 2-bit numerical values, and a synchronization resource used for transmitting the synchronization indication information is a first resource;

when the synchronization type of the sending terminal is a second type, determining that a synchronization source identifier of the sending terminal is any identifier in a third synchronization source set, the value of the coverage parameter is a second sequence combination of 2-bit numerical values, and a synchronization resource used for transmitting the synchronization indication information is a first resource;

when the synchronization type of the sending terminal is a third type, determining that the synchronization source identifier of the sending terminal is a first synchronization source identifier in a first synchronization source set, the value of the coverage parameter is a third sequence combination of 2-bit numerical values, and the synchronization resource used for transmitting the synchronization indication information is a first resource;

when the synchronization type of the sending terminal is a fourth type, determining that the synchronization source identifier of the sending terminal is the same as the synchronization source identifier of the first terminal, the value of the coverage parameter is a fourth sequence combination of 2-bit numerical values, and the synchronization resource used for transmitting the synchronization indication information is a second resource;

when the synchronization type of the sending terminal is a fifth type, determining that the synchronization source identifier of the sending terminal is a sum of the total number of the synchronization source identifiers in the first synchronization source set and the synchronization source identifier of the second terminal, or a sum of the total number of the synchronization source identifiers in the third synchronization source set and the synchronization source identifier of the second terminal, and the value of the inCoverage parameter is a fourth sequence combination of 2-bit numerical values, and the synchronization resource used for transmitting the synchronization indication information is a first resource;

when the synchronization type of the sending terminal is a sixth type, determining that the synchronization source identifier of the sending terminal is any one of a second synchronization source set and a fourth synchronization source set, the value of the coverage parameter is a fourth sequence combination of 2-bit numerical values, and the synchronization resource used for transmitting the synchronization indication information is a first resource or a second resource;

and when the synchronization type of the sending terminal is a seventh type, determining that the synchronization source identifier of the sending terminal is the same as the synchronization source identifier of the synchronization source of the sending terminal, and the value of the coverage parameter is a fourth sequence combination of 2-bit numerical values, and the synchronization resource used for transmitting the synchronization indication information is a resource which is different from the resource used for transmitting the synchronization indication information of the synchronization source of the sending terminal in the first resource and the second resource.

3. An apparatus for transmitting synchronization information, the apparatus comprising:

the system comprises an acquisition module and a sending module, wherein the acquisition module is used for acquiring the environment of a sending terminal and/or a synchronous source of the sending terminal, and the synchronous source of the sending terminal is a Global Navigation Satellite System (GNSS), a long-term evolution evolved node B (LTE-eNB), a wireless access 5G base station NR-gNB or a terminal;

a first determining module, configured to determine a synchronization type of the sending terminal according to an environment in which the sending terminal is located and/or a synchronization source of the sending terminal;

a second determining module, configured to determine, according to a synchronization type of the sending terminal, synchronization indication information used for indicating the synchronization type and synchronization resources used for transmitting the synchronization indication information;

a sending module, configured to send the synchronization indication information to a receiving terminal through the synchronization resource, so that the receiving terminal determines a synchronization type of the sending terminal according to the synchronization indication information;

wherein the first determining module comprises:

a first determining unit, configured to determine that a synchronization type of the sending terminal is a first type when an environment in which the sending terminal is located is within a coverage area of an evolved UMTS terrestrial radio access network E-UTRAN and a synchronization source of the sending terminal is an LTE-eNB;

a second determining unit, configured to determine that the synchronization type of the sending terminal is a second type when the environment where the sending terminal is located is within a coverage area of a radio access network NG-RAN that is wirelessly accessed and a synchronization source of the sending terminal is NR-gNB;

a third determining unit, configured to determine that the synchronization type of the sending terminal is a third type when the synchronization source of the sending terminal is a GNSS;

a fourth determining unit, configured to determine that the synchronization type of the sending terminal is a fourth type when the synchronization source of the sending terminal is the first terminal; the synchronization type of the first terminal is a first type, a second type or a third type;

a fifth determining unit, configured to determine that the synchronization type of the sending terminal is a fifth type when the synchronization source of the sending terminal is the second terminal; the synchronization type of the second terminal is a fourth type;

a sixth determining unit, configured to determine that the synchronization type of the sending terminal is a sixth type when the environment of the sending terminal is outside the coverage of the E-UTRAN and the NG-RAN and a synchronization source of the sending terminal is not a terminal and a GNSS;

a seventh determining unit, configured to determine that the synchronization type of the sending terminal is a seventh type when the synchronization source of the sending terminal is a third terminal or a fourth terminal, or determine that the synchronization type of the sending terminal is a seventh type when the synchronization source of the sending terminal is a fifth terminal; the synchronization type of the third terminal is a fifth type, the synchronization type of the fourth terminal is a sixth type, and the synchronization type of the fifth terminal is a seventh type.

4. The apparatus of claim 3, wherein the synchronization indication information includes a synchronization source identifier of the sending terminal and an coverage parameter in a master information block MIB, wherein the synchronization source identifier is selected from a synchronization source set, and the synchronization source set includes four sets; the noncoverage parameter is a 2-bit numerical value; wherein,

the second determining module includes:

an eighth determining unit, configured to determine, when the synchronization type of the sending terminal is a first type, that a synchronization source identifier of the sending terminal is any identifier except a first synchronization source identifier in a first synchronization source set, a value of the coverage parameter is a first sequence combination of 2-bit values, and a synchronization resource used for transmitting the synchronization indication information is a first resource;

a ninth determining unit, configured to determine that, when the synchronization type of the sending terminal is a second type, a synchronization source identifier of the sending terminal is any identifier in a second synchronization source set, a value of the coverage parameter is a second sequence combination of 2-bit values, and a synchronization resource used for transmitting the synchronization indication information is a first resource;

a tenth determining unit, configured to determine, when the synchronization type of the sending terminal is a third type, that a synchronization source identifier of the sending terminal is a first synchronization source in a first synchronization source set, and a value of the coverage parameter is a third sequence combination of 2-bit numerical values, and a synchronization resource used for transmitting the synchronization indication information is a first resource;

an eleventh determining unit, configured to determine, when the synchronization type of the sending terminal is a fourth type, that the synchronization source identifier of the sending terminal is the same as the synchronization source identifier of the first terminal, and the value of the coverage parameter is a fourth sequence combination of 2-bit numerical values, and a synchronization resource used for transmitting the synchronization indication information is a second resource;

a twelfth determining unit, configured to determine, when the synchronization type of the sending terminal is a fifth type, that the synchronization source identifier of the sending terminal is a sum of the total number of synchronization sources in the first synchronization source set and the synchronization source identifier of the second terminal, or is a sum of the total number of synchronization sources in the second synchronization source set and the synchronization source identifier of the second terminal, a value of the inCoverage parameter is a fourth sequence combination of 2-bit values, and a synchronization resource used for transmitting the synchronization indication information is a first resource;

a thirteenth determining unit, configured to determine, when the synchronization type of the sending terminal is a sixth type, that a synchronization source identifier of the sending terminal is any one identifier of a third synchronization source set or a fourth synchronization source set, a value of the coverage parameter is a fourth sequence combination of 2-bit values, and a synchronization resource used for transmitting the synchronization indication information is a first resource or a second resource;

a fourteenth determining unit, configured to determine, when the synchronization type of the sending terminal is a seventh type, that the synchronization source identifier of the sending terminal is the same as the synchronization source identifier of the synchronization source of the sending terminal, and the value of the coverage parameter is a fourth sequence combination of 2-bit values, and the synchronization resource used for transmitting the synchronization indication information is a resource, of the first resource and the second resource, that is different from the resource used for transmitting the synchronization indication information of the synchronization source of the sending terminal.

5. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the transmission method of synchronization information according to any of claims 1 to 2 when executing the computer program.

6. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the transmission method of synchronization information according to any one of claims 1 to 2.

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