Communication device and a method therein for determining a contention window size in a communication network
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsJung-Fu Cheng, Sorour Falahati, Du Ho Kang, Havish Koorapaty, Daniel Larsson, Amitav Mukherjee
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Abstract
The disclosed embodiments relate to a method performed by an apparatus and also relate to an apparatus. The method includes transmitting to a communication device a burst including a subframe; receiving from the communication device a HARQ values associated with the subframe; and determining a random backoff contention window size based on the received HARQ values and also based on previously unused HARQ feedbacks. The apparatus is configured to perform the method steps described above.
Claims17
A method performed by a first communication device for adapting a random backoff contention window size, comprising:
- transmitting a plurality of transmissions to at least one second communication device;
- receiving from the second communication device, a plurality of Hybrid Automatic Repeat reQuest, HARQ, feedback values corresponding to the plurality of transmissions;
- and
- adapting the random backoff contention window size based on the received plurality of HARQ feedback values.
An apparatus configured to adapt a random backoff contention window size, comprising:
- processing circuitry, memory and transceiver circuitry, collectively configured to:
- transmit a plurality of transmissions to at least one second communication device;
- receive, from the second communication device, a plurality of Hybrid Automatic Repeat reQuest, HARQ, feedback values corresponding to the plurality of transmissions;
- and
- adapt the random backoff contention window size based on the received plurality of HARQ feedback values.
An apparatus, comprising:
- processing circuitry, memory and transceiver circuitry collectively configured to:
- perform a listen-before-talk (LBT) procedure with respect to a channel in unlicensed spectrum using a random backoff contention window size;
- transmit a downlink burst on the channel as a consequence of the LBT procedure;
- receive a plurality of HARQ feedback values for the downlink burst;
- and
- adapt the random backoff contention window size based on the plurality of HARQ feedback values.
Dependencies are inferred from the claim text.