Method and apparatus for terminal self-reselecting resource based on priority in wireless communication system
First Claim
1. A method performed by a media access control (MAC) entity of a user equipment (UE) in a wireless communication system, the method comprising:
- based on the MAC entity being configured by an upper layer to transmit using a pool of resources, creating a configured sidelink grant that corresponds to transmissions of multiple MAC protocol data units (PDUs);
determining that there is data for a vehicle-to-everything (V2X) communication in a sidelink traffic channel (STCH) associated with the configured sidelink grant;
determining that first sidelink resources of the STCH associated with the configured sidelink grant do not fulfill a latency requirement for transmitting the data in the V2X communication according to a ProSe per-packet priority (PPPP);
selecting, from among the pool of resources, second sidelink resources for the transmissions of the multiple MAC PDUs based on determining that the first sidelink resources of the STCH do not fulfill the latency requirement; and
transmitting the multiple MAC PDUs using the second sidelink resources.
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Abstract
Suggested is a novel condition for a media access control (MAC) entity in user equipment (UE) reselecting a sidelink resource in a wireless communication system. The MAC entity of the UE can reselect a sidelink resource when a configured sidelink grant does not satisfy a latency requirement according to ProSe per-packet priority (PPPP). More particularly, configuration is performed by an upper layer so that the MAC entity transmits on the basis of sensing using a resource pool; the MAC entity selects generation of a configured sidelink grant corresponding to transmission of a plurality of MAC protocol data units (PDU); and when data is available in a sidelink traffic channel (STCH) and the configured sidelink grant does not satisfy the latency requirement according to the PPPP, a sidelink resource is reselected.
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Citations
18 Claims
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1. A method performed by a media access control (MAC) entity of a user equipment (UE) in a wireless communication system, the method comprising:
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based on the MAC entity being configured by an upper layer to transmit using a pool of resources, creating a configured sidelink grant that corresponds to transmissions of multiple MAC protocol data units (PDUs); determining that there is data for a vehicle-to-everything (V2X) communication in a sidelink traffic channel (STCH) associated with the configured sidelink grant; determining that first sidelink resources of the STCH associated with the configured sidelink grant do not fulfill a latency requirement for transmitting the data in the V2X communication according to a ProSe per-packet priority (PPPP); selecting, from among the pool of resources, second sidelink resources for the transmissions of the multiple MAC PDUs based on determining that the first sidelink resources of the STCH do not fulfill the latency requirement; and transmitting the multiple MAC PDUs using the second sidelink resources. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A user equipment (UE) configured to operate in a wireless communication system, the UE comprising:
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a transceiver; at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations that comprise; based on a media access control (MAC) entity of the UE being configured by an upper layer to transmit using a pool of resources, creating a configured sidelink grant that corresponds to transmissions of multiple MAC protocol data units (PDUs); determining that there is data for a vehicle-to-everything (V2X) communication in a sidelink traffic channel (STCH) associated with the configured sidelink grant; determining that first sidelink resources of the STCH associated with the configured sidelink grant do not fulfill a latency requirement for transmitting the data in the V2X communication according to a ProSe per-packet priority (PPPP); selecting, from among the pool of resources, second sidelink resources for the transmissions of the multiple MAC PDUs based on determining that the first sidelink resources of the STCH do not fulfill the latency requirement; and transmitting the multiple MAC PDUs using the second sidelink resources. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification