A communication system comprises a mobile unit that generates mobile unit position signals and message signals. A base station is wireless two-way coupled to the mobile unit. The base station has a GPS receiver that generates base station position signals, a master wireless modem that receives the mobile unit position signals, and the mobile unit message signals. The base station includes a base display changing in response to the mobile unit position signals and the base station position signal.

 
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< Wireless communication system control apparatus and method

< Replenishment of pre-paid wireless telephone accounts using short message service (SMS)

> Message transmitting method using short message service

> Multiplexing-interleaving and demultiplexing-deinterleaving

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