CHANNEL ACCESS METHOD AND APPARATUS
First Claim
1. A channel access method, applied to a wireless local area network, and comprising:
- generating, by a station, a backoff counter value, wherein the backoff counter value is randomly selected from a range from zero to CWo, CWo is a contention window for orthogonal frequency division multiple access (OFDMA) subchannel contention, and CWo is an integer greater than 0;
receiving, by the station, a first trigger frame from an access point, the first trigger frame indicates a quantity of subchannels for random access, and the quantity of subchannels for random access is an integer greater than 0;
if the backoff counter value is not greater than the quantity of subchannels for random access, randomly selecting, by the station, one subchannel from the subchannels for random access to send an uplink frame.
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Accused Products
Abstract
A channel access process method in a wireless local area network is provided. The method includes: generating, by a station, a backoff counter value; then performing, by the station, a backoff operation after receiving a first trigger frame, where the backoff operation includes: deducting, from the backoff counter value, a quantity N of subchannels for random access, to obtain a new backoff counter value; and when the new backoff counter value is 0 or a negative number, randomly selecting, by the station, one subchannel from the subchannels for random access, and then accessing the subchannel to send an uplink frame. The present application further provides a corresponding channel access apparatus. Applying the method and the apparatus of the embodiments of the present application improves system access efficiency and avoids a waste of system resources.
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12 Claims
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1. A channel access method, applied to a wireless local area network, and comprising:
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generating, by a station, a backoff counter value, wherein the backoff counter value is randomly selected from a range from zero to CWo, CWo is a contention window for orthogonal frequency division multiple access (OFDMA) subchannel contention, and CWo is an integer greater than 0; receiving, by the station, a first trigger frame from an access point, the first trigger frame indicates a quantity of subchannels for random access, and the quantity of subchannels for random access is an integer greater than 0; if the backoff counter value is not greater than the quantity of subchannels for random access, randomly selecting, by the station, one subchannel from the subchannels for random access to send an uplink frame. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A channel access apparatus, applied to a wireless local area network, and the apparatus comprising:
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a processor and a non-transitory storage medium storing instructions, the instructions, when executed by the processor, cause the apparatus to; generate a backoff counter value, wherein the backoff counter value is randomly selected from a range from zero to CWo, CWo is a contention window for orthogonal frequency division multiple access (OFDMA) subchannel contention, and CWo is an integer greater than 0; receive, a first trigger frame from an access point, the first trigger frame indicates a quantity of subchannels for random access, and the quantity of subchannels for random access is an integer greater than 0; randomly select, one subchannel from the subchannels for random access to send an uplink frame when the backoff counter value is not greater than the quantity of subchannels for random access. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification