×

Medium access method for contention and non-contention

  • US 8,259,655 B2
  • Filed: 11/04/2005
  • Issued: 09/04/2012
  • Est. Priority Date: 11/26/2004
  • Status: Expired due to Fees
First Claim
Patent Images

1. A medium access method for contention and non-contention in a system comprising an access point, a first group of stations for accessing a medium without contention, and a second group of stations for accessing the medium through contention, the medium access method comprising:

  • (a) preparing a contention-free access message for the first group;

    (b) detecting a transmission time of a contention access message for the second group;

    (c) embedding the contention-free access message in the contention access message to transmit the embedded message to the first group and the second group during the transmission time of the contention access message; and

    (d) receiving the contention access message with the embedded contention-free access message at the first group and the second group, and endowing one of the first group and the second group with a priority to attempt access to a medium,wherein, in response to endowing the first group with the priority in step (d), the first group accesses the medium according to access scheduling within the contention-free period, and the second group has a network allocation vector set for the contention-free period to maintain a standby state and the second group attempts to access the medium within a contention period subsequent to the standby state, andwherein the contention-free period comprises a first period for sequentially uploading data of the stations of the first group to an access point, and a second period for sequentially downloading data corresponding to the uploaded data to each of the stations generating the uploaded data.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×