Wireless local area network data transmission method and apparatus for flexibly configuring a bandwidth mode
AssigneeHuawei Technologies Co., Ltd.
InventorsYunbo Li, Sheng Liu
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Abstract
A wireless local area network data transmission method and an apparatus, such that a bandwidth mode can be flexibly configured, and idle channel utilization and a throughput can be increased. The method includes sending, by a first station (STA), respective preambles and data on a primary channel and at least one secondary channel of a communication channel to a second STA, where the at least one secondary channel includes some secondary channels of the communication channel, and a bandwidth (BW) sub-field in the preamble is set to a value that indicates a complete bandwidth of the communication channel and that indicates skipping preamble puncturing.
Claims20
A wireless local area network data transmission method, comprising:
- performing, by a first station (STA) a clear channel assessment (CCA) on a communication channel comprising a primary channel and a plurality of secondary channels;
- setting, by the first STA, a bandwidth (BW) sub-field in a preamble to a value after the first STA determines, based on the CCA, that the plurality of secondary channels include one or more busy channels that are unavailable for data transmission;
- sending, by the first STA, the preamble and data on the primary channel and an idle channel of the plurality of secondary channels to a second STA, wherein the value of the BW sub-field indicates to the second STA that the primary channel and each of the plurality of secondary channels are available for transmission even though the plurality of secondary channels include the one or more busy channels.
A station (STA), comprising:
- a transceiver unit configured to send, to a second STA, respective preambles and data on a primary channel of a communication channel and a plurality of secondary channels of the communication channel;
- and
- a processing unit coupled to the transceiver unit, wherein the processing unit is configured to:
- perform a clear channel assessment (CCA) on the communication channel;
- and
- set a bandwidth sub-field in a preamble to a value after determining, based on the CCA, that the plurality of secondary channels include one or more busy channels that are unavailable for data transmission, wherein the value indicates to the second STA that the primary channel and each of the plurality of secondary channels are available for transmission even though the plurality of secondary channels include the one or more busy channels.
A transmitter chip, applied to a station (STA), comprising:
- a control circuit configured such that when a channel mode of a communication channel includes a primary channel and a plurality of secondary channels having some channels of the communication channel, the control circuit sets a bandwidth (BW) sub-field in a to-be-sent preamble to a value that indicates a complete bandwidth of the communication channel and that indicates a non-preamble puncturing mode;
- a signal processing circuit configured to perform signal processing on the to-be-sent preamble in which the BW sub-field is set and to-be-sent data based on a bandwidth mode indicated by the BW sub-field;
- and
- a transmitter circuit coupled to the control circuit and configured to send each preamble and data to a second STA on the primary channel and an idle channel of the plurality of secondary channels, wherein the value of the BW sub-field indicates to the second STA that the primary channel and each of the plurality of secondary channels are available for transmission even though the plurality of secondary channels include one or more busy channels that are unavailable for transmission.
Dependencies are inferred from the claim text.