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Methods for ensuring medium access in a wireless network

  • US 7,499,425 B2
  • Filed: 11/08/2002
  • Issued: 03/03/2009
  • Est. Priority Date: 11/09/2001
  • Status: Active Grant
First Claim
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1. A method for use in a system comprising an access point and a plurality of stations, the method comprising:

  • periodically broadcasting a control frame, including information specifying contention slots during which a station may transmit a reservation request in contention with other stations, the periodic broadcasting being carried out by the access point;

    transmitting a reservation request, which does not include information indicating a required bandwidth, from a station to the access point in the contention slots;

    transmitting a permission signal from the access point, which provides a transmission opportunity for the station, in response to a successful receipt of the reservation request from the station; and

    transmitting a bandwidth request including the information indicating the required bandwidth, from the station to the access point, during the transmission opportunity, said bandwidth request having a data structure different from that of said reservation request.

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