COMMUNICATION NETWORK WITH IMPROVED ACCESS PROTOCOL

摘要

In a multiple access communication network a primary station (2) is coupled via a transmission medium to a plurality of secondary stations (4......18). The primary station is arranged for determining a free channel list comprising the channels which are not used by any of the secondary stations to transmit information to the primary station. The primary station is arranged for transmitting this list of free channels to the secondary stations. The secondary stations are arranged for attempting to seize one of the channels indicated on the free channel list. If the attempt to seize a channel was successful, the secondary stations keeps using the channel it seized until it has all available information transmitted. If the secondary station stops using the channel, the primary station will include said channel again in the free channel list.