Patent Number: 6,400,948

Title: Systems and methods for acquiring a control channel

Abstract: A radiotelephone system having DCCH channels includes an over-the-air activation teleservice sub-system (OTAF) for programming mobile stations (MS) with Intelligent Roaming (IR) information. Each MS includes a history list containing the most recently used DCCHs. The IR information sent to a MS includes data for setting the number of entries in the history list, data for setting the content of the history list entries, and a data for setting the power level threshold. The number of entries in each MS can be optimally set according to the number of DCCHs in a network with networks having a greater number of DCCHs being able to place a greater number of entries in the history list of their subscribing MSs. The content of the history list, moreover, may be optimally set for a network and for a particular cell or group of cells in a network. Thus, for instance, an MS entering a new network can be programmed to have the DCCHs of the new network. The power level threshold is used by the MS to detect suitable DCCHs. By setting the power level threshold, an MS can be optimized according to the RF planning of its carrier. As a result, the threshold selected by the MS can coincide with the carrier's intended reselection power level threshold.

Inventors: Hardin; Stephen T. (Snellville, GA)

Assignee: BellSouth Intellectual Property Corporation

International Classification: H04Q 7/32 (20060101); H04Q 7/38 (20060101); H04Q 007/20 ()

Expiration Date: 06/04/2019