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Low power protocol for wireless terminal peer-to-peer communications

  • US 7,277,417 B2
  • Filed: 02/04/2004
  • Issued: 10/02/2007
  • Est. Priority Date: 04/29/2003
  • Status: Active Grant
First Claim
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1. A method for managing peer-to-peer communications in a Wireless Local Area Network (WLAN) having a plurality of wireless terminals, one of which acts as a master at any time and remaining ones acting as slaves at any time, the method comprising:

  • communicating according to a frame cycle including a beaconing period, a broadcast data period, a plurality of polled data periods, and a contention period;

    during the beaconing period, the master transmitting a beacon and each of the plurality of Slaves listening for the beacon;

    during the broadcast data period, the master broadcasting data and each of the plurality of Slaves listening for the broadcast data;

    during each polled data period, the master polling an assigned Slave and the assigned Slave transmitting data to the master if it has data to send;

    during the contention period, a new Slave, if present, transmitting to the master;

    during the plurality of polled data periods, non-assigned Slaves optionally powering down their transmitters and receivers; and

    during the contention period, the plurality of Slaves optionally powering down their transmitters and receivers.

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