Acknowledgement, error recovery and backoff operation of uplink multi-user multiple-input-multiple-output communication in wireless networks
First Claim
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1. A method of wireless communication, comprising:
- obtaining a transmission opportunity (TXOP) period for communicating with an access point (AP) over a wireless communication channel;
sending an announcement to the AP to share the TXOP period among wireless stations, as a multi-user TXOP period for simultaneously transmitting data from the wireless stations to the AP on multiple uplink (UL) spatial streams over the wireless communication channel; and
performing error recovery and backoff processing upon loss of communication information based on frame type, wherein the frame type comprises an uplink transmission request (UTR) frame or an uplink transmission indication (UTI) control frame, and backoff processing comprises increasing a contention window (CW) or transmitting an additional UTI or UTR frame.
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Abstract
Wireless communication in a wireless network comprises obtaining a transmission opportunity period (TXOP) for communicating with an access point (AP) over a wireless communication channel. An announcement is sent to the AP to share the transmission opportunity period among wireless stations, 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. Correctly received UL frames received by the AP are acknowledged. Error recovery and backoff processing are performed upon loss of communication information based on frame type.
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Citations
28 Claims
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1. A method of wireless communication, comprising:
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obtaining a transmission opportunity (TXOP) period for communicating with an access point (AP) over a wireless communication channel; sending an announcement to the AP to share the TXOP period among wireless stations, as a multi-user TXOP period for simultaneously transmitting data from the wireless stations to the AP on multiple uplink (UL) spatial streams over the wireless communication channel; and performing error recovery and backoff processing upon loss of communication information based on frame type, wherein the frame type comprises an uplink transmission request (UTR) frame or an uplink transmission indication (UTI) control frame, and backoff processing comprises increasing a contention window (CW) or transmitting an additional UTI or UTR frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A wireless station, comprising:
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a Physical Layer (PHY) for 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 send an announcement to the AP to share the TXOP with at least another wireless station as a multi-user transmission opportunity period for simultaneously transmitting data from the wireless stations to the AP on multiple uplink (UL) spatial streams over the wireless communication channel, and to perform error recovery and backoff processing upon loss of communication information based on frame type, the frame type comprises an uplink transmission request (UTR) frame or an uplink transmission indication (UTI) control frame, and the backoff processing comprises the channel access processor configured to increase a contention window (CW) or to transmit an additional UTI or UTR frame. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A wireless access point, comprising:
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a Physical Layer (PHY) for wireless communication over a wireless communication channel; and a Media Access Control (MAC) layer configured to manage simultaneous transmissions to the access point on multiple uplink (UL) spatial streams during a multi-user transmission opportunity period over the wireless communication channel, wherein the wireless access point (AP) is configured to determine if UL frames are received correctly and to receive communications based on error recovery and backoff processing upon loss of communication information based on frame type, the frame type comprises an uplink transmission request (UTR) frame or an uplink transmission indication (UTI) control frame, and the backoff processing comprises the AP to increase a contention window (CW) or to transmit an additional UTI or UTR frame. - View Dependent Claims (25, 26, 27, 28)
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Specification