| 摘要 |
A cyclic prioritized multiple access (CPMA) method is disclosed which includes Fixed Deterministic Post-Backoff. Fixed deterministic post-backoff reduces conflicts between access points (102,152) of overlapping cells (170). A fixed deterministic backoff delay (Bkoff times a fixed number of idle time slots) is used by all access points (102,104A,104B,106,152,154A,154B), with the value of Bkoff being greater than the number of overlapping cells. Each access point has a backoff timer that is counted down using the shortest interframe space possible. A contention-free session (CFS) is initiated when the backoff timer expires, and it is then reset to the value of Bkoff to start a new cycle. A cycle is measured in terms of idle time slots instead of a fixed time interval. Contention-based transmissions can be attempted by an access point or other stations in the cell using their assigned priority while the access point is counting down its backoff timer. |
