Patent ID: 7457273

Claim:
A radio terminal equipment, comprising: a route supervision processing section for registering, for each destination address, an address of a radio-relay terminal equipment, which relays datagrams destined for the destination address, into a routing table in accordance with a predetermined dynamic routing protocol; a first transmission processing section for transmitting a datagram to a radio-relay terminal equipment corresponding to the destination address of the datagram in accordance with said routing table; a datagram supervision processing section for receiving a first datagram transmitted by another radio terminal equipment and checking whether a source address of the first datagram is an address of the radio terminal equipment, and judging whether a second data transmitted by the radio terminal equipment having a destination address that is the same as the destination address of the first datagram has been relayed by the other radio terminal equipment when the source address of the first data rain is the address of the radio terminal equipment; and a second transmission processing section for transmitting, where a received third datagram is to be relayed by said radio terminal equipment itself, the third datagram to the radio terminal equipment corresponding to the destination address of the third datagram in accordance with said routing table.