Multi-channel communication station for communicating a multi-channel PPDU and methods of reducing collisions on secondary channels in multi-channel wireless networks
First Claim
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1. A communication station comprising:
- a transceiver configured to communicate on a primary channel and up to three or more secondary channels; and
processing circuitry to configure the transceiver to;
perform short-preamble detection during a contention window to detect a packet transmission on any one of the secondary channels starting within the contention window; and
perform guard-interval detection during the contention window to detect a guard interval of a packet transmission on any one of the secondary channels,wherein the short-preamble detection and the guard-interval detection are performed concurrently during the contention window,wherein the packet transmission to be detected on one of the secondary channels by either the short-preamble detection or the guard-interval detection comprises packet transmissions of a communication station of a neighboring basic service set having its primary channel co-located on one of the secondary channels.
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Abstract
Embodiments of a very-high throughput communication station and method for communicating on a primary channel and up to three or more secondary channels are generally described herein. Short-preamble detection may be performed during a contention window to detect packet transmissions on any one of the secondary channels starting within the contention window. Guard-interval detection is also performed during the contention window to detect a guard interval of a packet transmission on any one of the secondary channels. The short-preamble detection and the guard-interval detection may be performed concurrently during the contention window to determine if any of the secondary channels are busy.
19 Citations
21 Claims
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1. A communication station comprising:
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a transceiver configured to communicate on a primary channel and up to three or more secondary channels; and processing circuitry to configure the transceiver to; perform short-preamble detection during a contention window to detect a packet transmission on any one of the secondary channels starting within the contention window; and perform guard-interval detection during the contention window to detect a guard interval of a packet transmission on any one of the secondary channels, wherein the short-preamble detection and the guard-interval detection are performed concurrently during the contention window, wherein the packet transmission to be detected on one of the secondary channels by either the short-preamble detection or the guard-interval detection comprises packet transmissions of a communication station of a neighboring basic service set having its primary channel co-located on one of the secondary channels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of communicating a multi-channel data unit on a primary channel and up to three or more secondary channels, the method comprising:
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performing short-preamble detection during a contention window to detect a packet transmission on any one of the secondary channels starting within the contention window; and performing guard-interval detection during the contention window to detect a guard interval of a packet transmission on any one of the secondary channels, wherein the short-preamble detection and the guard-interval detection are performed concurrently during the contention window, wherein the guard-interval detection and the short-preamble detection are performed after a distributed coordination function interframe space, and wherein the distributed coordination function interframe space is provided after an acknowledge packet. - View Dependent Claims (14, 15)
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16. The method of clam 15 wherein to determine if the primary channel is idle or busy, the method further comprises:
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performing energy detection in the primary channel during the contention window to determine whether the primary channel is idle or busy; performing short-preamble detection during the contention window to detect packet transmissions on the primary channel; and performing guard-interval detection during the contention window to detect a guard interval of a packet transmission on the primary channel, wherein when the primary channel is determined to be idle for a time that includes a distributed coordination function interframe space plus the contention window, the method comprises transmitting a packet on the primary channel and any of the secondary channels that are designated as idle secondary channels.
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17. A method of transmitting a multi-channel data unit in accordance with IEEE 802.11ac, the method comprising:
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performing short-preamble detection during a contention window to detect packet transmissions on any one of a plurality of secondary channels starting within the contention window; performing guard-interval detection during the contention window to detect a guard interval of a packet transmission on any one of the secondary channels; designating, based on the short-preamble detection and the guard-interval detection, any of the secondary channels as busy when a packet transmission is detected; and transmitting a multi-channel data unit on a primary channel and any of the secondary channels that are not designated as busy. - View Dependent Claims (18, 19, 20, 21)
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Specification