Mobile communication system and method for transmission of connection less packets

A method of communication for a system comprising a gateway connected to a connectionless data network, a plurality of routers connected to said gateway, and a plurality of wireless access networks, connected respectively to said routers, for establishing wireless links with mobile stations, each of said routers including a memory for storing location data of mobile stations, the method comprising the steps of:

• a) receiving a packet of first arrival from the connectionless data network at said gateway;
• b) transmitting a request message from said gateway to all of said routers in response to receipt of the packet for requesting a search for a mobile station specified by the packet of first arrival;
• c) making a search through the memory of each of the routers in response to said request message from the gateway;
• d) receiving, at one of said routers, said packet from the gateway if the specified mobile station is found in the memory of said one router;
• and
• e) routing the received packet via the corresponding wireless access network to the mobile station.

A method of communication for a system comprising gateway connected to a connectionless data network, a plurality of routers connected to said gateway, and a plurality of wireless access networks, connected respectively to said routers, for establishing wireless links with mobile stations, each of said routers including a memory for storing location data of mobile stations, the method comprising the steps of:

• a) receiving, at said gateway, packets of first and second arrival of same destination from the connectionless data network;
• b) transmitting a request message from said gateway to all of said routers in response to receipt of the packet of first arrival for requesting a search for a mobile station specified by the packet of first arrival;
• c) making a search through the memory of each of the routers in response to said request message from the gateway;
• d) transmitting a reply message from one of said routers to said gateway if the specified mobile station is found in the memory of said one router;
• e) transmitting said packets from the gateway to said one router in response to said reply message;
• and
• f) receiving, at said one router, said packets from the gateway and routing the received packets via the corresponding wireless access network to the mobile station.

A method of communication for a system comprising a gateway connected to a connectionless data network, a plurality of routers connected to said gateway, and a plurality of wireless access networks, connected respectively to said routers, for establishing wireless links with mobile stations, each of said routers including a memory for storing location data of mobile stations, the method comprising the steps of:

• a) receiving, at said gateway, packets of first and second arrival of same destination from the connectionless data network;
• b) transmitting a request message from said gateway to all of said routers in response to receipt of the packet of first arrival for requesting a search for a mobile station specified by the packet;
• c) making a search, at each of said routers, through the memory of the router in response to said request message and transmitting a reply message back to said gateway from one of the routers if the specified mobile station is found in the memory of said one router and establishing a connection from said one router to the specified mobile station via the corresponding wireless access network;
• d) transmitting, from the gateway to said one router, the packet of first arrival in response to said reply message;
• e) transmitting, from the gateway to said one router, the packet of second arrival if the packet of second arrival is received before a predetermined time interval expires;
• f) transmitting, from the gateway to said one router, a disconnect signal if said predetermined time interval expires after the transmission of each of the packets of first and second arrival;
• g) transmitting said packets of first and second arrival from said one router to the specified mobile station over the established connection;
• and
• h) clearing said connection in response to said disconnect signal.