Method and system for uplink multi-user multiple-input-multiple-output communication in wireless networks
First Claim
Patent Images
1. A method of wireless communication, comprising:
- a wireless station obtaining a transmission opportunity period (TXOP) for communicating with an access point (AP) over a wireless communication channel;
the wireless station transmitting an announcement that includes an uplink transmission request (UTR) to share the TXOP with at least another wireless station, as a multi-user TXOP for simultaneously transmitting data from the wireless stations on multiple uplink (UL) spatial streams over the wireless communication channel; and
causing one or more target wireless stations to receive an uplink transmission indication (UTI) frame, wherein the UTI frame comprises an enhanced clear to send (CTS) frame with a compressed receiver address (RA) field replacing a conventional RA field, the compressed RA field to represent multiple wireless stations and including an identifier for each of the one or more target wireless stations.
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Abstract
Wireless communication in a wireless network comprises a wireless station obtaining a transmission opportunity period (TXOP) for communicating with an access point (AP) over a wireless communication channel. The wireless station sends an announcement to the AP to share the transmission opportunity period with at least another wireless station, as a multi-user transmission opportunity period for simultaneously transmitting data from said wireless stations to the AP on multiple uplink (UL) spatial streams over the wireless channel.
125 Citations
36 Claims
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1. A method of wireless communication, comprising:
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a wireless station obtaining a transmission opportunity period (TXOP) for communicating with an access point (AP) over a wireless communication channel; the wireless station transmitting an announcement that includes an uplink transmission request (UTR) to share the TXOP with at least another wireless station, as a multi-user TXOP for simultaneously transmitting data from the wireless stations on multiple uplink (UL) spatial streams over the wireless communication channel; and causing one or more target wireless stations to receive an uplink transmission indication (UTI) frame, wherein the UTI frame comprises an enhanced clear to send (CTS) frame with a compressed receiver address (RA) field replacing a conventional RA field, the compressed RA field to represent multiple wireless stations and including an identifier for each of the one or more target wireless stations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A wireless station, comprising:
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a Physical Layer (PHY) including hardware configured to provide wireless communication over a wireless communication channel; a Media Access Control (MAC) layer; and a channel access processor configured to obtain a transmission opportunity period (TXOP) to communicate with an access point (AP) over the wireless communication channel, wherein the channel access processor is configured to transmit an announcement that includes an uplink transmission request (UTR) to the AP to share the TXOP with at least another wireless station as a multi-user TXOP to simultaneously transmit data from the wireless stations to the AP on multiple uplink (UL) spatial streams over the wireless channel, for the AP to transmit an uplink transmission indication (UTI) frame and an enhanced clear to send (CTS) frame with a compressed receiver address (RA) field replacing a conventional RA field, the compressed RA field to represent multiple wireless stations and including an identifier for each of one or more target wireless stations. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A wireless access point, comprising:
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a Physical Layer (PHY) including hardware configured to wirelessly communicate over a wireless communication channel; Media Access Control (MAC) layer configured to manage simultaneous transmissions from multiple wireless stations to the access point on multiple uplink (UL) spatial streams during a multi-user transmission opportunity period (TXOP) over a wireless channel; and a channel access processor configured to receive an announcement that includes an uplink transmission request (UTR) from a wireless station to share the TXOP with at least another wireless station as a multi-user TXOP, and to transmit an uplink transmission indication (UTI) frame and an enhanced clear to send (CTS) frame with a compressed receiver address (RA) field replacing a conventional RA field, the compressed RA field to represent multiple wireless stations and including an identifier for each of one or more target wireless stations. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification