US 2001/0018328 A1 · Radio relay system

Abstract

A plurality of radio relay stations 1 are connected so that bi-directional ring-like paths are made up of radio transmission paths. The respective radio relay stations 1 bidirectionally transmit data inputted from terminals placed thereunder onto the bidirectional ring-like paths respectively. The respective data are respectively received by radio relay stations 2 having data destination terminals placed thereunder along the bidirectional ring-like paths. Each radio relay station, which has received the data destined for the terminals placed thereunder from both directions, transmits earlier incoming data to each terminal placed thereunder and discards later incoming data. Thus, a radio relay system can be implemented which is capable of relaying data with a high degree of reliability.

Claims11

Dependent claims

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.

4 more elements

Dependencies are inferred from the claim text.

Radio relay system

Life of this patent

Radio relay system

Life of this patent

Abstract

Claims11