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US 2020/0288498 A1Published application
Method For Listening On Uplink Channel And Apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsYuan LI, Lei GUAN
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Abstract
Example uplink channel listening methods and apparatus are described. In one example method, a contention window size (CWS) is determined with reference to a time threshold, for example, a timer. After sending an uplink burst, if a terminal device does not receive indication information carrying a hybrid automatic repeat request (HARQ) status, the terminal device increases the CWS and then performs channel listening.
Claims20
A method, implemented by a terminal device, comprising:
- performing first listen before talk (LBT);
- and
- sending a first data packet on a first uplink burst after the first LBT succeeds;
- and
- determining a second contention window size (CWS), wherein determining the second CWS comprises at least one of following:
- on condition that a first time length is greater than or equal to a first time threshold and that first indication information indicating a hybrid automatic repeat request (HARQ) status is not received after the first uplink burst, determining that the second CWS is greater than a first CWS;
- or
- on condition that the first time length is less than or equal to the first time threshold and the first indication information indicating the HARQ status is not received after the first uplink burst, determining that the second CWS is equal to the first CWS;
- and
- performing second LBT based on the second CWS, wherein:
- an interval between a first reference time unit and a second reference time unit that corresponds to the first uplink burst is a first time length, wherein the first CWS corresponds to a LBT previous to the second LBT, and wherein the first reference time unit is later than the second reference time unit.
8 more elements
A wireless apparatus, comprising:
- a transceiver;
- a memory storage comprising instructions;
- and
- one or more hardware processors in communication with the memory storage, wherein the the instructions, when executed by the one or more hardware processors, instruct the one or more hardware processors to:
- perform first listen before talk (LBT);
- send a first data packet on a first uplink burst after the first LBT succeeds;
- and
- determine a second contention window size (CWS), wherein determining the second CWS comprising at least one of following:
- on condition that a first time length is greater than or equal to a first time threshold and that first indication information indicating a hybrid automatic repeat request (HARQ) status is not received after the first uplink burst, determining that the second CWS is greater than a first CWS;
- or
- on condition that the first time length is less than or equal to the first time threshold and the first indication information indicating the HARQ status is not received after the first uplink burst, determining that the second CWS is equal to the first CWS;
- and
- perform second LBT based on the second CWS, wherein:
- an interval between a first reference time unit and a second reference time unit that corresponds to the first uplink burst is a first time length, wherein the first CWS corresponds to LBT previous to the second LBT, and wherein the first reference time unit is later than the second reference time unit.
11 more elements
A non-transitory computer-readable medium storing computer executable instructions, wherein the instructions, when executed by one or more processors, instruct the one or more processors to perform operations comprising:
- performing first listen before talk (LBT);
- sending a first data packet on a first uplink burst after the first LBT succeeds;
- determining a second contention window size (CWS), wherein determining the second CWS comprises at least one of following:
- on condition that a first time length is greater than or equal to a first time threshold and that first indication information indicating a hybrid automatic repeat request (HARQ) status is not received after the first uplink burst, determining that the second CWS is greater than a first CWS;
- or
- on condition that the first time length is less than or equal to the first time threshold and the first indication information indicating the HARQ status is not received after the first uplink burst, determining that the second CWS is equal to the first CWS;
- and
- performing second LBT based on the second CWS, wherein:
- an interval between a first reference time unit and a second reference time unit that corresponds to the first uplink burst is a first time length, wherein the first CWS corresponds to a LBT previous to the second LBT, and wherein the first reference time unit is later than the second reference time unit.
6 more elements
Dependencies are inferred from the claim text.