Method for performing handover in a mobile communication system
First Claim
1. A method for determining handover of a mobile station by a serving base station in a mobile communication system, the method comprising the steps of:
- (1) measuring a channel state between the mobile station and the serving base station;
(2) comparing the measured channel state with a reference level and determining whether to request the mobile station to measure a signal intensity of at least one neighbor base station according to the comparison;
(3) receiving a report from the mobile station about the signal intensity of the at least one neighbor base station; and
(4) lowering the reference level when a signal intensity of the serving base station is higher than or equal to the signal intensity of the at least one neighbor base station.
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Accused Products
Abstract
Disclosed is a method for determining handover of a mobile station by a mobile station in a mobile communication system. The method includes measuring a downlink reference signal intensity of a serving base station; determining to perform scanning for measurement of reference signal intensities of the serving base station and neighbor base stations, when the measured downlink reference signal intensity of the serving base station is less than a reference value, negotiating with the serving base station for a scanning period and the number of scanning repetitions, measuring the reference signal intensities of the serving base station and the neighbor base stations, and resetting the reference value when a reference signal intensity of the serving base station is greater than or equal to reference signal intensities of neighbor base stations.
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Citations
21 Claims
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1. A method for determining handover of a mobile station by a serving base station in a mobile communication system, the method comprising the steps of:
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(1) measuring a channel state between the mobile station and the serving base station;
(2) comparing the measured channel state with a reference level and determining whether to request the mobile station to measure a signal intensity of at least one neighbor base station according to the comparison;
(3) receiving a report from the mobile station about the signal intensity of the at least one neighbor base station; and
(4) lowering the reference level when a signal intensity of the serving base station is higher than or equal to the signal intensity of the at least one neighbor base station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for determining handover of a mobile station by a mobile station in a mobile communication system, he method comprising the steps of:
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measuring a downlink reference signal intensity of a serving base station;
determining whether to perform scanning for measurement of reference signal intensities of the serving base station and at least one neighbor base station, when the measured downlink reference signal intensity of the serving base station is less than a reference value;
measuring the reference signal intensities of the serving base station and the at least one neighbor base station; and
resetting the reference value when a reference signal intensity of the serving base station is higher than or equal to reference signal intensity of the at least one neighbor base station. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification