MOBILE DECISION METHODOLOGY FOR ASSESSING MULTIPLE WIRELESS DATA NETWORKS

摘要

The present invention encompasses an apparatus and method for awireless communications device to choose the optimum wireless data network froma plurality of network choices. The wireless communications device employs aprotocol converter to convert out-bound data messages to a format usable by thewireless data network chosen and convert in-bound data messages to the originalformat usable by the wireless communications device. Based upon radio frequencymeasurements from a plurality of wireless data networks in the current coveragearea, the protocol converter will instruct the wireless communications device tocommunicate on wireless data network with strongest radio signal strength indicatoror a user-preferred wireless data network where the minimum radio signal strengthindicator requirement has been met. For end-user terminal transmission of datamessages, the protocol converter will perform conversion of data messages to thecurrent wireless data network and then transmit the data messages via radiofrequency transmission to the wireless network s base station. Also, upon receptionof data messages via radio frequency transmission from the fixed-end terminal, theprotocol converter will perform necessary conversion of data messages to the formatusable by an end processor of the wireless communications device.