Method of efficiently reselecting cell in mobile station using GPS
AssigneeSamsung Electronics Co., Ltd.
InventorYoon-Suk Choi
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Abstract
A cell reselection function in a mobile station (MS) through an adjacent cell search is provided. The MS in an idle state obtains its own moving speed and current location using Global Positioning System (GPS) location information, calculates a predicted moving location, and stores the predicted moving location. Thereafter, when measurement values of adjacent cells are similar, or when the adjacent cells are located in different location areas (LAs), the MS can efficiently search for the best cell from among the adjacent cells based on the location information and select the best cell as a new serving cell.
Claims15
A method of reselecting a cell in a mobile station (MS) in an idle state using Global Positioning System (GPS), the method comprising the steps of:
- obtaining location change information by periodically measuring GPS location information;
- measuring signal characteristics from adjacent cells and comparing the signal characteristics to a current cell;
- determining whether differences between the measurement values are equal to or less than a threshold;
- and
- if the differences between the measurement values are equal to or less than the threshold, performing the cell reselection based on stored base station system (BSS) GPS location information of adjacent cells and the location change information.
Dependencies are inferred from the claim text.