| US 7,590,386 B2 | ||
| Method for control of contention-based wireless access | ||
| Christopher Cave, Candiac (Canada); and Eldad Zeira, Huntington, N.Y. (US) | ||
| Assigned to InterDigital Technology Corporation, Wilmington, Del. (US) | ||
| Filed on Aug. 12, 2002, as Appl. No. 10/217,126. | ||
| Claims priority of provisional application 60/373463, filed on Apr. 18, 2002. | ||
| Prior Publication US 2004/0203426 A1, Oct. 14, 2004 | ||
| Int. Cl. H04B 17/00 (2006.01); H04M 1/00 (2006.01) | ||
| U.S. Cl. 455—67.11 [455/522; 455/63.1; 455/67.13; 370/252; 370/445; 370/447] | 19 Claims |
| 1. A method for controlling access to a contention-based communication channel, the method comprising:
receiving a communication signal transmitted over the contention based communication channel;
performing an error detection test to determine whether a transmission error has occurred;
determining a threshold value based on averages of previous signal-to-interference ratio (SIR) determinations;
classifying transmission errors according to error type using a threshold test, the threshold test including comparing a SIR
to the threshold value;
determining an occurrence rate of each error type, including insufficient transmission power errors; and
maintaining an error occurrence rate for each error type, wherein an insufficient transmission power error occurrence rate
is maintained by adjusting a transmission power parameter by a value equal to a sum of a power offset and interference signal
code power (ISCP).
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