Method and device for detecting uplink lbt failure in wireless communication system using unlicensed band
AssigneeSamsung Electronics Co., Ltd.
InventorsJaehyuk JANG, Anil Agiwal
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Abstract
The disclosure relates to a communication technique for convergence of a 5G communication system for supporting a higher data transmission rate beyond a 4G system with an IoT technology, and a system therefor. The disclosure may be applied to intelligent services (e.g., smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail business, security and safety-related services, etc.) based on 5G communication technology and IoT-related technology. The disclosure relates to a method and apparatus for detecting an uplink listen-before-talk (LBT) failure when using a 3GPP 5G new radio (NR) technology in a wireless communication system.
Claims20
A method performed by a terminal in a wireless communication system, the method comprising:
- receiving listen before talk (LBT)-related configuration information including first information on a timer for an LBT failure detection and second information on a maximum counter value for the LBT failure detection;
- performing an LBT for a first uplink (UL) bandwidth part (BWP) of a serving cell;
- in case that a transmission on an unlicensed band is not performed as a result of performing the LBT, starting the timer and incrementing a counter value;
- and
- in case that the counter value is greater than or equal to the maximum counter value before the timer expires, triggering a consistent LBT failure for the first UL BWP.
A terminal in a wireless communication system, the terminal comprising:
- a transceiver;
- and
- a controller configured to:
- receive, via the transceiver, listen before talk (LBT)-related configuration information including first information on a timer for an LBT failure detection and second information on a maximum counter value for the LBT failure detection,
- perform an LBT for a first uplink (UL) bandwidth part (BWP) of a serving cell,
- in case that a transmission on an unlicensed band is not performed as a result of performing the LBT, start the timer and increment a counter value, and
- in case that the counter value is greater than or equal to the maximum counter value before the timer expires, trigger a consistent LBT failure for the first UL BWP.
Dependencies are inferred from the claim text.