Mode transition method considering handover in a broadband wireless access communication system
First Claim
1. A method for enabling a mobile subscriber station to transit from a sleep mode to an awake mode in a broadband wireless access communication system including the sleep mode in which there exists no data to be transmitted between the mobile subscriber station and a base station, and the awake mode in which there exists data to be exchanged between the mobile subscriber station and the base station, the method comprising the steps of:
- measuring a signal quality in a predetermined time interval during the sleep mode; and
transiting from the sleep mode to the awake mode when the measured signal quality is less than a first threshold value
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Abstract
Disclosed is a method for enabling a subscriber station to shift from a sleep mode to an awake mode in a broadband wireless access communication system including the sleep mode in which there exists no data to be transmitted between the subscriber station and a base station, and the awake mode in which there exists data to be exchanged between the subscriber station and the base station. The method includes measuring a Carrier-to-Interference and Noise Ratio(CINR) with respect to the base station in a time interval for monitoring a received signal during the sleep mode; and shifting from the sleep mode to the awake mode when the measured signal-to-noise ratio is less than a first threshold value set in advance.
134 Citations
30 Claims
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1. A method for enabling a mobile subscriber station to transit from a sleep mode to an awake mode in a broadband wireless access communication system including the sleep mode in which there exists no data to be transmitted between the mobile subscriber station and a base station, and the awake mode in which there exists data to be exchanged between the mobile subscriber station and the base station, the method comprising the steps of:
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measuring a signal quality in a predetermined time interval during the sleep mode; and
transiting from the sleep mode to the awake mode when the measured signal quality is less than a first threshold value - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13)
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7. The method as claimed in claim 7, wherein the mobile subscriber station continuously measures the signal quality when a last measured signalquality is less than the first threshold value in even a case in which a number of times of a repetition of the first threshold value does not arrive at the maximum allowed value and the time interval for monitoring the signal has ended.
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14. A method for enabling a mobile subscriber station to maintain an awake mode in a broadband wireless access communication system including a sleep mode in which there exists no data to be transmitted between the mobile subscriber station and a base station, and the awake mode in which there exists data to be exchanged between the mobile subscriber station and the base station, the method comprising the steps of:
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measuring a signal quality; and
setting a state of the mobile subscriber station to be an awake mode lock state to maintain the awake mode when the measured signal quality is less than a first threshold value. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification