CN111132301B - Method and device for transmitting synchronization information - Google Patents
Method and device for transmitting synchronization information Download PDFInfo
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- CN111132301B CN111132301B CN201811290292.1A CN201811290292A CN111132301B CN 111132301 B CN111132301 B CN 111132301B CN 201811290292 A CN201811290292 A CN 201811290292A CN 111132301 B CN111132301 B CN 111132301B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/46—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
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Abstract
The embodiment of the invention provides a method and a device for transmitting synchronous information, wherein the method comprises the following steps: 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; and 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. The embodiment of the invention realizes the NR V2X-oriented synchronous source indication and transmission.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method and a device for transmitting synchronous information.
Background
At present, in order to meet advanced Vehicle to internet (V2X) service, a side link synchronization mechanism of a New Radio Vehicle to internet of vehicles (NR V2X) oriented to 5G Radio access needs to be researched. Among them, in a Long Term Evolution-Vehicle networking (LTE V2X) system, Side Link Synchronization Signal (SLSS) and Physical side link Broadcast Channel (PSBCH) are used for side link Synchronization.
The SLSS includes a Primary side link Synchronization signal (Primary side link Synchronization Si)gnal, PSSS) and Secondary link Synchronization Signal (SSSS). In addition, physical edge link synchronization ID routing
Is represented by a set, and
the set (including 0-335 sync IDs) is divided into two groups, ID _ net and ID _ oon, wherein the set ID _ net includes 0-167 sync IDs, and the set ID _ oon includes 168-335 sync IDs. Wherein the PSSS signal is generated in relation to whether the synchronization ID belongs to an ID _ net set or an ID _ oon set, and if the synchronization ID belongs to the ID _ net set, the ZC synchronization signal is generated by a root sequence u-26; if the sync ID belongs to the ID _ oon set, a sync signal is generated by the root sequence u being 37.
In addition, in the LTE V2X system, the cycle of the side link synchronization resource is 160ms, and the core network can configure at most 3 synchronization resources for transmitting synchronization information: resource1, Resource2 and Resource 3. Resource is given by the parameter SL-offset indicator sync, i.e. the frame number and subframe number used for transmitting the synchronization information need to satisfy (frame number × 10+ subframe number) mod 160 ═ SL-offset indicator sync. In addition, in the LTE V2X system, a PSBCH carries a Master Information Block (MIB), and the MIB indicates whether a terminal transmitting the PSBCH is in a coverage area of an Evolved UMTS Terrestrial Radio Access Network (Evolved UMTS Terrestrial Radio Access Network) by whether an inCoverage value is 1.
In summary, in the LTE V2X system, synchronization source information included in the terminal in the side link is indicated by two sets of physical side link synchronization ID of ID _ net and ID _ oon, whether the parameter coverage is 1, and synchronization resources Resource1, Resource2, and Resource 3. However, since in the NR V2X system, NR-gNB will also act as the synchronization source, 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, the NR V2X-oriented synchronization source indication and transmission mode needs to be designed.
Disclosure of Invention
The embodiment of the invention provides a method and a device for transmitting synchronization information, which are used for realizing the indication and transmission of a synchronization source facing NR V2X.
In order to implement NR V2X-oriented synchronization source indication and transmission, in a first aspect, the present embodiment provides a method for transmitting synchronization information, where the method includes:
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;
and 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.
In a second aspect, an embodiment of the present invention provides an apparatus for transmitting synchronization information, where the apparatus includes:
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;
and the sending module is used for 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.
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, where the processor implements the steps of the transmission method of synchronization information when executing the computer program.
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, where the computer program, when executed by a processor, implements the steps of the transmission method of synchronization information.
According to the transmission method and device of the synchronization information, the synchronization type of the sending terminal is determined according to the environment where the sending terminal is located and/or the synchronization source of the sending terminal, wherein the synchronization source is a GNSS, an LTE-eNB, an NR-gNB or a terminal, synchronization indication information used for indicating the synchronization type and synchronization resources used for transmitting the synchronization indication information are determined according to the synchronization type of the sending terminal, and finally the synchronization indication information is sent to the receiving terminal through the synchronization resources, so that the receiving terminal determines the synchronization type of the sending terminal according to the synchronization indication information, and therefore indication and transmission of the synchronization source information in an NR V2X system are achieved, and further more V2X application scenarios can be supported.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a flow chart illustrating steps of a method for transmitting synchronization information according to an embodiment of the present invention;
fig. 2 is a block diagram of a transmission apparatus for synchronization information according to an embodiment of the present invention;
fig. 3 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, 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 drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, which is a flowchart illustrating steps of a method for transmitting synchronization information according to an embodiment of the present invention, the method includes the following steps:
step 101: and acquiring the environment of the sending terminal and/or the synchronization source of the sending terminal.
In this step, specifically, before determining the synchronization indication information, the sending terminal needs to acquire its own environment and/or a synchronization source of the sending terminal.
The synchronization source of the sending terminal may be a global navigation satellite system (GNSS for short), an evolved node b for long term evolution (LTE-eNB for short), a wireless access 5G base station (NR-gNB for short), or a terminal.
In addition, the environment of the sending terminal can be specifically located in the coverage of an evolved UMTS terrestrial radio access network (E-UTRAN), in the coverage of a radio access network for radio access (NG-RAN), or outside the coverage of the E-UTRAN and NG-RAN.
Step 102: and 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.
Specifically, in this step, after the environment where the sending terminal is located and/or the synchronization source of the sending terminal are obtained, the synchronization type of the sending terminal may 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 may be determined according to the synchronization type of the sending terminal.
Step 103: according to the 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 are determined.
In this step, specifically, after determining the synchronization type of the transmitting terminal, synchronization indication information indicating the synchronization type and a synchronization resource for transmitting the synchronization indication information may be determined according to the synchronization type of the transmitting terminal, thereby enabling transmission of the synchronization indication information in the NR V2X system by transmitting the determined synchronization indication information corresponding to the synchronization type to the receiving terminal through the synchronization resource.
Step 104: and sending 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 may determine the synchronization type of the sending terminal according to the received synchronization indication information, and further determine the environment where the sending terminal is located and/or the synchronization source of the sending terminal, thereby implementing the synchronization process between terminals.
In this way, in this embodiment, the synchronization source of the sending terminal may be a GNSS, an LTE-eNB, an NR-gNB, or a terminal, and by 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 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, and finally transmitting the synchronization indication information to the receiving terminal through the synchronization resources, indication and transmission of synchronization source information in the NR V2X system are achieved, thereby enabling support for more V2X application scenarios.
Further, the synchronization indication information includes a synchronization source identifier of the sending terminal and an noncoverage parameter in a master information block (MIB for short), where the synchronization source identifier is selected from a synchronization source set, and the synchronization source set includes four sets; the coverage parameter is a 2-bit value.
For example, the coverage parameter may consist of the numbers 0 and 1; in addition, the synchronization source set may include a first synchronization source set, a second synchronization source set, a third synchronization source set, and a fourth synchronization source set, wherein the first synchronization source set may be named id _ lte _ net, and the synchronization source identification range within the set is 0-167; the second synchronization source set may be named as id _ lte _ oon, and the synchronization source identification range in the set is 168-; the third synchronization source set may be named as id _ nr _ net, and the synchronization source identifier in the set is 335-; the fourth set of synchronization sources may be named id _ nr _ oon, and the synchronization sources within the set are identified as 502-671.
In addition, specifically, the following describes determining 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, and determining 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.
First, when the environment of the sending terminal is in the coverage of an evolved UMTS terrestrial radio access network (E-UTRAN for short) and the synchronization source of the sending terminal is an LTE-eNB, it is determined that the synchronization type of the sending terminal is a first type. At this time, when the synchronization type of the sending terminal is a first type, determining that the 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 the synchronization resource used for transmitting the synchronization indication information is a first resource;
specifically, the first sequence combination of the coverage parameter may be 01.
Secondly, when the environment of the sending terminal is in the coverage 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; at this time, when the synchronization type of the sending terminal is a second type, it is determined that the synchronization source identifier of the sending terminal is any identifier in a third synchronization source set, and the value of the coverage parameter is a second sequence combination of 2-bit values, and the synchronization resource used for transmitting the synchronization indication information is a first resource.
Specifically, the second sequence combination of the coverage parameter may be 10.
Thirdly, when the synchronous source of the sending terminal is GNSS, determining that the synchronous type of the sending terminal is a third type; at this time, when the synchronization type of the sending terminal is a third type, it is determined 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 values, and the synchronization resource used for transmitting the synchronization indication information is a first resource.
Specifically, the third sequence combination of the coverage parameter may be 11.
In addition, the first synchronization source identifier in the specific first synchronization source set may be 0.
Fourthly, 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; at this time, when the synchronization type of the sending terminal is a 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 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.
Specifically, the fourth sequence combination of the coverage 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 sending terminal is a fourth type; in addition, when the synchronization source of the fourth type of sending terminal is a, the synchronization source identifier of the sending terminal is the same as the synchronization source identifier of a; of course, when the synchronization source of the fourth type of sending terminal is B, the synchronization source identifier of the sending terminal is the same as the synchronization source identifier of B; and 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 the synchronization source identifier of C.
Fifthly, when the synchronization source of the sending terminal is the 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; at this time, when the synchronization type of the sending terminal is a fifth type, it is determined that the synchronization source identifier of the sending terminal is a 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 a 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 inccoverage parameter is a fourth sequence combination of 2-bit numerical values, and the synchronization resource used for transmitting the synchronization indication information is the first resource.
For example, assuming that the fourth type of second terminal is D, when the synchronization source of the transmitting terminal is D, the synchronization type of the transmitting terminal is a fifth type. At this time, assuming that the total number of the synchronization source identifiers in the first synchronization source set is 168 and the total number of the synchronization source identifiers in the third synchronization source set is 168, the synchronization source identifier of the sending terminal is a sum of the synchronization source identifier of D and 168 or a sum of the synchronization source identifier of D and 168.
Sixthly, 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 a GNSS, determining that the synchronization type of the sending terminal is a sixth type; at this time, when the synchronization type of the sending terminal is a sixth type, it is determined that the synchronization source identifier of the sending terminal is any one of the second synchronization source set and the fourth synchronization source set, 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 the first resource or the second resource.
Seventhly, 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. At this time, when the synchronization type of the sending terminal is a 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 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, 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.
For example, if the synchronization source of the sending terminal is a 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 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; and if the synchronization source of the sending terminal is a fourth terminal, determining that the synchronization source identifier of the sending terminal is the same as the synchronization source identifier of the fourth 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 fourth terminal in the first resource and the second resource.
Specifically, when the resource for transmitting the synchronization indication information of the fourth terminal is the first resource, the synchronization resource for transmitting the synchronization indication information of the seventh type of transmitting terminal is the second resource; of course, when the resource for transmitting the synchronization indication information of the fourth terminal is the second resource, the synchronization resource for transmitting the synchronization indication information of the seventh type of transmitting terminal is the first resource.
In this way, the present embodiment implements confirmation and indication of the synchronization type of the sending terminal, i.e. confirmation and indication of the environment where the sending terminal is located and/or the synchronization source of the sending terminal, by the above manner, thereby implementing indication and transmission of synchronization source information in the NR V2X system, and further enabling support of more V2X application scenarios.
As shown in fig. 2, a block diagram of a device for transmitting synchronization information according to an embodiment of the present invention is shown, where the device includes:
an obtaining module 201, configured to obtain an environment where a sending terminal is located and/or a synchronization source of the sending terminal, where the synchronization source of the sending terminal is a global navigation satellite system GNSS, a long term evolution evolved node b LTE-eNB, a wirelessly accessed 5G base station NR-gNB, or a terminal;
a first determining module 202, configured to determine a synchronization type of the sending terminal according to an environment where the sending terminal is located and/or a 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 used for indicating the synchronization type and synchronization resources used for transmitting the synchronization indication information;
a sending module 204, 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.
Optionally, the first determining module 202 includes:
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.
Optionally, the synchronization indication information includes a synchronization source identifier of the sending terminal and an coverage parameter in a master information block MIB, where 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 content of the first and second substances,
the second determining module 203 comprises:
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 third 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 the synchronization source identifier of the sending terminal is a first synchronization source identifier in a first synchronization source set, and the 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 source identifiers in the first synchronization source set and the synchronization source identifier of the second terminal, or the total number of synchronization source identifiers in the third synchronization source set and the synchronization source identifier of the second terminal, and 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 of a second synchronization source set and a fourth synchronization source set, and a value of the coverage parameter is a fourth sequence combination of 2-bit numerical values, where 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.
The transmission apparatus for synchronization information provided in this embodiment determines, according to an environment where a transmitting terminal is located and/or a synchronization source of the transmitting terminal, a synchronization type of the transmitting terminal, where the synchronization source is a GNSS, an LTE-eNB, an NR-gNB, or a terminal, determines, according to the synchronization type of the transmitting terminal, synchronization indication information for indicating the synchronization type and a synchronization resource for transmitting the synchronization indication information, and finally transmits, through the synchronization resource, the synchronization indication information to a receiving terminal, so that the receiving terminal determines, according to the synchronization indication information, the synchronization type of the transmitting terminal, thereby implementing indication and transmission of synchronization source information in an NR V2X system, and further enabling to support more V2X application scenarios.
In addition, as shown in fig. 3, an entity structure schematic diagram of the electronic device provided in the embodiment of the present invention is shown, where the electronic device may include: a processor (processor)310, a communication Interface (communication Interface)320, a memory (memory)330 and a communication bus 340, wherein the processor 310, the communication Interface 320 and the memory 330 communicate with each other via the communication bus 340. The processor 310 may invoke a computer program stored on the memory 330 and executable on the processor 310 to perform the methods provided by the various embodiments described above, including, for example: 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; and 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.
In addition, the logic instructions in the memory 330 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Embodiments of the present invention further provide a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented to perform the method provided in the foregoing embodiments when executed by a processor, and the method includes: 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; and 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.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding 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 content of the first and second substances,
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 content of the first and second substances,
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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