Cell reselection method based on quality of service in mobile communication terminal
First Claim
1. A cell reselection method based on quality of service (QoS) in a mobile station (MS), the method comprising the steps of:
- measuring signal characteristics of adjacent cells located near a current serving cell;
determining quality of packet data traffic channel (PDTCH) through which data are received and transmitted;
searching for an adjacent cell which has a traffic channel quality similar to that of the current serving cell from among the adjacent cells, when the traffic channel quality decreases below a predetermined threshold value as a result of the determination; and
performing a camping to one of the searched adjacent cells.
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Accused Products
Abstract
Disclosed is a cell selection method for providing better quality of service. For this purpose, when measurement values (for example, a receive level) from adjacent cells near a mobile station (MS) are similar to each other, the MS measures quality of a packet data traffic channel (PDTCH) through which data are transmitted. Then, based on the measured quality, the MS selects or reselects a new cell which can provide better QoS. Even when the receive levels of the adjacent cells near the MS are similar to each other, the MS can perform camping to the new cell which is capable of providing the best QoS so that the user of the MS may receive better QoS.
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Citations
15 Claims
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1. A cell reselection method based on quality of service (QoS) in a mobile station (MS), the method comprising the steps of:
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measuring signal characteristics of adjacent cells located near a current serving cell;
determining quality of packet data traffic channel (PDTCH) through which data are received and transmitted;
searching for an adjacent cell which has a traffic channel quality similar to that of the current serving cell from among the adjacent cells, when the traffic channel quality decreases below a predetermined threshold value as a result of the determination; and
performing a camping to one of the searched adjacent cells. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A cell reselection method based on quality of service (QoS) in the mobile station (MS), the method comprising the steps of:
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periodically measuring signal characteristics of adjacent cells located near a current serving cell;
determining if differences between the measured result values are within a range of a predetermined threshold value;
determining quality of packet data traffic channel (PDTCH) through which data are received and transmitted, if the differences are within the range of the predetermined threshold value;
searching for an adjacent cell which has a measured value of signal characteristics similar to that of the current serving cell, when the traffic channel quality decreases below a predetermined threshold value as a result of the determination; and
performing a camping to one of the searched adjacent cells except for cells which have been previously camped on for a predetermined last time period. - View Dependent Claims (14, 15)
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Specification