Patent ID: 6728541
Filing Date: 2004-04-27
Classification: H04B,H04L,H04W

Abstract:
A radio relay system having a plurality of radio relay devices for performing the relay of communication data between communication devices by radio transmission, comprising:a plurality of radio transmission paths for ring-connecting said plurality of radio relay devices; said each radio relay device including, a local interface for holding one or plural communication devices; relay means for relaying communication data received from an immediately preceding radio transmission path on a ring, which is formed by the ring connection to an immediately following radio transmission path on the ring when the data is not destined for each communication device held by a corresponding radio relay device; receiving means for transmitting the communication data received from the on-ring immediately preceding radio transmission path to the corresponding communication device held through the local interface when the communication data is destined for the communication device held by said corresponding radio relay device; and transmitting means for transmitting communication data received from the communication device held through the local interface to the on-ring immediately following radio transmission path.