Patent ID: 8031720

Claim:
A packet transmission system comprising: a plurality of wireless base stations; and one or more terminal devices belonging to one of the wireless base stations; wherein each of the wireless base stations has a location table to record an address of each of said plurality of wireless base stations that structure a network, and for each of said plurality of wireless base stations that are recorded, addresses of the terminal devices that are currently existing under the respective wireless base station, a short packet route control table and a long packet route control table that indicate for each of the other wireless base stations that structure the network which wireless base stations are along a first route for a short packet and along a second route for a long packet, and wherein each of the wireless base stations is configured to exchange the information in the location table with the other wireless base stations to update the location table; and each of the wireless base stations is configured to, upon receiving a packet, identify a wireless base station to which the source terminal device or the destination terminal device currently belongs according to the location table, based on a source address of the source terminal device or a destination address of the destination terminal device, respectively, included in the received packet, and to determine whether the packet is a short packet or a long packet to find a next hop based on either the short packet route control table or the long packet route control table, respectively, to find the next hop, and transmit the packet to the next hop.