Patent ID: 7327729

Claim:
A communication system for supporting reservation of network resources, said system comprising: a plurality of terminals; and a relaying device operable to perform priority control of packets based on a priority set to each of the packets to relay the packets between said plurality of terminals, wherein each of said plurality of terminals comprises: a communication-managing table operable to store communication information of the terminal and a communication partner thereof, the communication partner is included in said plurality of terminals; a packet-transmitting unit operable to set the priority for each of the packets according to the communication information stored on said communication-managing table and operable to transmit the packets; a packet-receiving unit operable to receive packets; and a link-managing unit operable to update the priority of each of the packets transmitted from the terminal when a link condition of the terminal changes, the priority of each of the packets is included in the communication information stored in said communication-managing table, wherein each of said terminals is configured to couple to at least another of the terminals through said relaying device, such that when one of said terminals is moved, the link condition changes and said link managing unit is operable to update the priority of the packets, transmitted from the one terminal, from a previous priority value associated with the one terminal before the link condition changed to a new priority value.