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Acknowledgement, error recovery and backoff operation of uplink multi-user multiple-input-multiple-output communication in wireless networks

  • US 9,295,074 B2
  • Filed: 09/10/2013
  • Issued: 03/22/2016
  • Est. Priority Date: 09/10/2013
  • Status: Active Grant
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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