Patent ID: 8289924

Claim:
A communication system, comprising a radio relay device for performing radio communication with radio terminals configured to communicate with each other and a control device for performing packet transfer to and from said radio relay device and for controlling radio communication between said radio terminals and said radio relay device, wherein: when a transmitting side radio terminal and a receiving side radio terminal are connected to the same radio relay device, said transmitting side radio terminal divides a transmitting packet addressed to said receiving side radio terminal into a first packet to be transmitted via a route not passing through said control device and a second packet to be transmitted via said control device, and transmits said first packet and said second packet to said radio relay device; said radio relay device receives said first packet and said second packet transmitted from the transmitting side radio terminal and transmits said first packet to said receiving side radio terminal and transmits said second packet to said control device; said control device receives said second packet transmitted from said radio relay device and transmits said second packet to said radio relay device; said radio relay device receives said second packet transmitted from said control device and transmits said second packet to said receiving side radio terminal; and said receiving side radio terminal receives said first packet and said second packet transmitted from said radio relay device and restores the initial packet.