Method for synchronization between ues according to change in reference synchronization source in v2x communication system, and device therefor
AssigneeLG Electronics Inc.
InventorBongjun Hwang
Life of this patent
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Abstract
Provided are a method for synchronization between user equipments (UEs) according to a change in a reference synchronization source in a vehicle-to-everything (V2X) communication system, and a device therefor. A first transmission UE transmits information on a change in a reference synchronization source to at least one reception UE, and after a predetermined time, changes the reference synchronization source from the first transmission UE to a second transmission UE.
Claims20
A method performed by a first transmitting User Equipment (UE) adapted to operate in a wireless communication system, the method comprising:
- establishing a Sidelink (SL) link with at least one receiving UE;
- transmitting a first Sidelink Synchronization Signal Block (SL-SSB) to the at least one receiving UE;
- performing synchronization with the at least one receiving UE based on the first SL-SSB;
- providing SL services to the at least one receiving UE using the first transmitting UE as a reference synchronization source;
- receiving a second SL-SSB from a second transmitting UE having a higher priority of the reference synchronization source than the first transmitting UE;
- transmitting information about a change of the reference synchronization source to the at least one receiving UE;
- and
- changing the reference synchronization source from the first transmitting UE to the second transmitting UE after a period of time.
A first transmitting User Equipment (UE) adapted to operate in a wireless communication system, the first transmitting UE comprising:
- at least one transceiver;
- at least one processor;
- and
- at least one memory operably connectable to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising:
- establishing a Sidelink (SL) link with at least one receiving UE;
- transmitting a first Sidelink Synchronization Signal Block (SL-SSB) to the at least one receiving UE via the at least one transceiver;
- performing synchronization with the at least one receiving UE based on the first SL-SSB;
- providing SL services to the at least one receiving UE using the first transmitting UE as a reference synchronization source via the at least one transceiver;
- receiving a second SL-SSB from a second transmitting UE having a higher priority of the reference synchronization source than the first transmitting UE via the at least one transceiver;
- transmitting information about a change of the reference synchronization source to the at least one receiving UE via the at least one transceiver;
- and
- changing the reference synchronization source from the first transmitting UE to the second transmitting UE after a period of time.
A method performed by a receiving User Equipment (UE) adapted to operate in a wireless communication system, the method comprising:
- establishing a sidelink link with a first transmitting UE;
- receiving a first Sidelink Synchronization Signal Block (SL-SSB) from the first transmitting UE;
- performing synchronization with the first transmitting UE based on the first SL-SSB;
- receiving sidelink services from the first transmitting UE using the first transmitting UE as a reference synchronization source;
- receiving information from the first transmitting UE about a change of the reference synchronization source;
- and
- changing the reference synchronization source from the first transmitting UE to a second transmitting UE after a period of time.
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Dependencies are inferred from the claim text.