Importance

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Abstract

In an embodiment of this invention that is suitable for practicing in an IS-136 or similarly compliant system, a method for operating a mobile station (10) includes steps of (A) receiving a Control Channel Selection Parameters message with the mobile station; (B) storing a SCANINTERVAL value received with the message in a memory (24) of the mobile station; in response to a user specifying a new system during an execution of a Non-Public System, Digital Control Channel (NPS-DCCH) selection procedure, (C) modifying the stored SCANINTERVAL value so as to indicate a measurement interval equal to a period of one Hyperframe; (D) performing signal strength measurements on a channel of the user-specified system using the modified SCANINTERVAL value; and, at the termination of the signal strength measurements, (E) restoring the SCANINTERVAL value to the value received in the Control Channel Selection Parameters message. The step of storing also stores a DELAY value received with the Control Channel Selection Parameters message, and in one embodiment the step of measuring ignores the stored DELAY value, while in another embodiment the step of modifying also modifies the stored DELAY value to have a value that is less than an amount of time that the mobile station has already been camped on a current DCCH.

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First Claim