Patent ID: 7965979
Filing Date: 2011-06-21
Classification: H04W

Abstract:
1. A method comprising: synchronizing, by a subscriber station, with a network clock associated with a base station of a wireless metropolitan area network having a first coverage area; receiving, by the subscriber station, a first short messaging service (SMS) message, including time stamp information, counter information, and location-specific information associated with an access point of a wireless local area network having a second coverage area, which is smaller than the first coverage area, wherein the subscriber station is located inside the first coverage area and outside the second coverage area when said receiving of the first SMS message occurs and the first SMS message is a re-broadcasted version of a second SMS message, originated from another subscriber station communicatively coupled with the access point, that includes the location-specific information; identifying, by the subscriber station, an interval to communicate the location-specific information based on the network clock; determining, by the subscriber station, whether counter information exceeds a threshold; and broadcasting, by the subscriber station, a third SMS message, including the location-specific information, during the interval based on the time stamp information and said determining.