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US 11,700,666 B2Granted
Method and apparatus for triggering transmission carrier selection in wireless communication system
AssigneeLG Electronics Inc.
InventorsJaewook Lee, Taehun Kim, Youngdae Lee, Jongwoo Hong
Life of this patent
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Abstract
A method performed by a user equipment (UE) in a wireless communication system, the method including: selecting to create a configured sidelink grant corresponding to transmissions of at least one media access control (MAC) protocol data unit (PDU); and triggering a transmission carrier selection procedure based on (i) data being available in a sidelink traffic channel (STCH) associated with one or more carriers, and (ii) there being no configured sidelink grant on any carrier, among the one or more carriers, that is allowed for the STCH.
Claims17
A method performed by a wireless device operating in a wireless communication system, the method comprising:
- determining that at least one currently selected carrier is not allowed to be used for a sidelink logical channel where data is available, wherein the sidelink logical channel is associated with a carrier;
- determining that a channel busy ratio (CBR) of the carrier is below a CBR threshold associated with a priority of the sidelink logical channel;
- considering the carrier as a candidate carrier for a transmission (TX) carrier selection or reselection based on i) the determination that the at least one currently selected carrier is not allowed to be used for the sidelink logical channel where the data is available, and ii) the determination that the CBR of the carrier is below the CBR threshold associated with the priority of the sidelink logical channel;
- and
- selecting one or more carriers among candidate carriers for the TX carrier selection or reselection including the carrier,
- wherein the CBR of the carrier comprises:
- a CBR value measured by the wireless device based on a CBR measurement result being available for the carrier;
- and
- a value configured by a network for the carrier based on the CBR measurement result not being available for the carrier.
6 more elements
A wireless device configured to operate in a wireless communication system, the wireless device comprising:
- a transceiver;
- at least one memory;
- and
- at least one processor operably connectable to the at least one memory and storing instructions that, when executed by the at least one processor, perform operations comprising:
- determining that at least one currently selected carrier is not allowed to be used for a sidelink logical channel where data is available, wherein the sidelink logical channel is associated with a carrier;
- determining that a channel busy ratio (CBR) of the carrier is below a CBR threshold associated with a priority of the sidelink logical channel;
- considering the carrier as a candidate carrier for a transmission (TX) carrier selection or reselection based on i) the determination that the at least one currently selected carrier is not allowed to be used for the sidelink logical channel where the data is available, and ii) the determination that the CBR of the carrier is below the CBR threshold associated with the priority of the sidelink logical channel;
- and
- selecting one or more carriers among candidate carriers for the TX carrier selection or reselection including the carrier,
- wherein the CBR of the carrier comprises:
- a CBR value measured by the wireless device based on a CBR measurement result being available for the carrier;
- and
- a value configured by a network for the carrier based on the CBR measurement result not being available for the carrier.
10 more elements
An apparatus comprising:
- at least one memory;
- and
- at least one processor operably connectable to the at least one memory and storing instructions that, when executed by the at least one processor, perform operations comprising:
- determining that at least one currently selected carrier is not allowed to be used for a sidelink logical channel where data is available, wherein the sidelink logical channel is associated with a carrier;
- determining that a channel busy ratio (CBR) of the carrier is below a CBR threshold associated with a priority of the sidelink logical channel;
- considering the carrier as a candidate carrier for a transmission (TX) carrier selection or reselection based on i) the determination that the at least one currently selected carrier is not allowed to be used for the sidelink logical channel where the data is available, and ii) the determination that the CBR of the carrier is below the CBR threshold associated with the priority of the sidelink logical channel;
- and
- selecting one or more carriers among candidate carriers for the TX carrier selection or reselection including the carrier,
- wherein the CBR of the carrier comprises:
- a CBR value measured by the apparatus based on a CBR measurement result being available for the carrier;
- and
- a value configured by a network for the carrier based on the CBR measurement result not being available for the carrier.
9 more elements
Dependencies are inferred from the claim text.