A method of determining whether a wireless packet data service can be activated in a dormant state. To activate one of a plurality of packet data services in the dormant state, a BS transmits to an MS a Page Message containing an SR ID identifying the service to be activated. If a service instance for the service is unavailable, the MS transmits to the BS a response message indicating that the service cannot be reconnected. The BS then terminates immediately, thereby saving radio resources and improving system performance.

 
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< Frame structure for radio communications system

> Method of rate control

> Time information transmitter-receiver, and time information transmission-reception integrated circuit

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