Channel access method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsLei HUANG, Yingpei LIN, Jiayin ZHANG
Life of this patent
Estimating the term…
Abstract
A channel access method is provided. Under the method, a network element performs random backoff listen before talk (LBT) for channel preemption, and after the preemption succeeds, performs signal transmission in the first transmission time interval TTI within a maximum channel occupancy time MCOT. The network element also performs nonrandom backoff LBT for channel preemption before another at least one TTI within the maximum channel occupancy time MCOT. This is to ensure coexistence and performance of systems when an LBT requirement of a high unlicensed frequency band is met.
Claims16
A channel access method, comprising:
- performing, by a network element, random backoff listen before talk (LBT) for channel preemption;
- after the channel preemption succeeds, performing, signal transmission in a first transmission time interval (TTI) within a maximum channel occupancy time (MCOT);
- and
- performing, by the network element before another at least one TTI within the MCOT, non-random backoff LBT for channel preemption.
A channel access method, comprising:
- performing, by a first network element, random backoff listen before talk (LBT) for channel preemption;
- and
- after the channel preemption succeeds, notifying, by the first network element in at least one transmission time interval (TTI) within a maximum channel occupancy time (MCOT), a second network element of frame structure information of a corresponding TTI to enable the second network element to perform directional signal transmission in the corresponding TTI.
A channel access apparatus, comprising:
- a processor, configured to perform random backoff listen before talk (LBT) for channel preemption;
- and
- a transceiver, configured to perform, after the channel preemption succeeds, signal transmission in a first transmission time interval (TTI) within a maximum channel occupancy time (MCOT), wherein
- the processor is further configured to perform, before another at least one TTI within the MCOT, non-random backoff LBT for channel preemption.
A channel access apparatus, comprising:
- a processor, configured to perform random backoff listen before talk (LBT) for channel preemption;
- and
- a transceiver, configured to notify, in at least one transmission time interval (TTI) within a maximum channel occupancy time (MCOT) after the preemption succeeds, a network element of frame structure information of a corresponding TTI to enable the network element to perform directional signal transmission in the corresponding TTI.
Dependencies are inferred from the claim text.