Patent ID: 7428571

Claim:
A method of operating a gateway with a location information system, comprising the steps of: a) receiving a plurality of location request messages from a plurality of client terminals for location information of a mobile terminal, and storing the location request messages in a memory; and b) making a search through said memory at periodic intervals for detecting at least one location request message, requesting the location information of said mobile terminal from a location information system if there is at least one location request message detected in said memory, transmitting a reply message to the client terminal from which was received the at least one location request message detected in said memory, and deleting from the memory the at least one location request message for which the reply message was transmitted, wherein step (a) comprises: a 1 ) creating a plurality of client entries in a memory for mapping addresses of the client terminals to said mobile terminal; and a 2 ) setting a flag to “0” in each of said client entries; wherein step (b) comprises: b 1 ) repeatedly making said search for detecting at least one client entry whose flag is set to “0”; b 2 ) requesting said location information from the location information system; b 3 ) setting the flag to “1” in the client entry for which the location information has been requested; b 4 ) reading the address from the client entry whose flag is set to “1” when the location information is received from said system, encapsulating the location information in a reply message destined to the address that has been read, and transmitting the reply message.