Channel access method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsLei Huang, Yingpei Lin, Jiayin Zhang
Life of this patent
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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.
Claims20
A method, comprising:
- performing, by a network element, a random backoff listen before talk (LBT) to determine whether a channel is available;
- after determining the channel is available, performing, a signal transmission in a first transmission time interval within a maximum channel occupancy time (MCOT);
- and
- performing, by the network element before another at least one transmission time interval within the MCOT, a non-random backoff LBT to determine whether the channel is available.
The method according to claim3, wherein a receive beam of the directional non-random backoff LBT and a transmit beam of the signal transmission performed in the transmission time interval after the directional non-random backoff LBT are directed in manners that the receive beam of the directional non-random backoff LBT covers the transmit beam of the signal transmission performed in the transmission time interval after the directional non-random backoff LBT.
A method, comprising:
- performing, by a first network element, a random backoff listen before talk (LBT) to determine whether a channel is available;
- and
- in response to determining that the channel is available, notifying, by the first network element in at least one transmission time interval within a maximum channel occupancy time (MCOT), a second network element of frame structure information of a set of corresponding transmission time intervals to enable the second network element to perform a directional signal transmission in the set of corresponding transmission time intervals.
An apparatus, comprising:
- a processor, configured to perform a random backoff listen before talk (LBT) to determine whether a channel is available;
- and
- a transceiver, configured to perform, after determining that the channel is available, a signal transmission in a first transmission time interval within a maximum channel occupancy time (MCOT);
- and
- wherein the processor is further configured to perform, before another at least one transmission time interval within the MCOT, a non-random backoff LBT to determine whether the channel is available.
An apparatus, comprising:
- a processor, configured to perform a random backoff listen before talk (LBT) to determine whether a channel is available;
- and
- a transceiver, configured to notify, in at least one transmission time interval within a maximum channel occupancy time (MCOT) after determining that the channel is available, a network element of frame structure information of a set of corresponding transmission time intervals to enable the network element to perform a directional signal transmission in the set of corresponding transmission time intervals.
Dependencies are inferred from the claim text.