Patent ID: 7162253
Filing Date: 2007-01-09
Classification: H04W

Abstract:
1. A method for supporting a geographical-based service for at least one terminal node in a communications system, the method comprising: (a) determining a first geographical position that is associated with a first terminal node; (b) inserting the first geographical position and a specified radius into a message header of a first datagram, the specified radius being indicative of a serving area for the geographical-based service; (c) sending, by the first terminal node, the first datagram; (d) receiving, by another terminal node, the first datagram; (e) determining another geographical position, the other geographical position being associated with the other terminal node; and (f) if the other terminal node is within an approximate circular area, accepting the first datagram, wherein the approximate circular area is specified by the specified radius in relation to the first geographical position.