In media access control, the step which updates the log record from set of the choice null

摘要

In the environment of IEEE 802.11 WLAN network, the enhancement for R-DEB (Relaxed Deterministic Backoff) are provided for a random access MAC (Medium Access Control) method to be shared. The resource slots are all available candidate, reflecting the level of use / occupy in the past, a busy index for estimating the probability of use in future according to another occurs simultaneously device is calculated. The method assumes the use of a subset of the transmission resource slot, the collision is busy index resource slots are frequent that replaces a resource to be candidates that are not currently in use is the lowest, to update this set. For the purposes of resource monitoring, passive snooping / overhearing of all resources of the CCA (Clear Channel Assessment) it is used.