Method and apparatus for handover in a communication system
First Claim
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1. A handover method of a serving Base Station (BS) in a communication system, the method comprising:
- the serving BS alternately receiving a target BS indicator and a downlink (DL) channel status report from a Mobile Station (MS) at intervals of preset frames in a BS switching period; and
if a signal, received in at least one of a first frame corresponding to a first reception of the target BS indicator and a second frame corresponding to a second reception of the target BS indicator, comprises the target BS indicator, the serving BS determining to continue the handover,wherein if signals, received in both of the first and second frames, comprise the same target BS indicator and the DL channel status report is not received in the interval of preset frames after an expiration of the BS switching period, the serving BS determines to cancel the handover.
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Abstract
A handover method and apparatus in a communication system are provided. A serving Base Station (BS) alternately receives a target BS indicator and a downlink (DL) channel status from a Mobile Station (MS) at intervals of predetermined frames in a BS switching period for handover of the MS. The serving BS determines whether to continue the handover according to a signal received in a frame corresponding to a second reception of the target BS indicator. The method and apparatus provide a detailed definition of operation parameters for a switching time between the serving BS and a target BS.
11 Citations
23 Claims
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1. A handover method of a serving Base Station (BS) in a communication system, the method comprising:
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the serving BS alternately receiving a target BS indicator and a downlink (DL) channel status report from a Mobile Station (MS) at intervals of preset frames in a BS switching period; and if a signal, received in at least one of a first frame corresponding to a first reception of the target BS indicator and a second frame corresponding to a second reception of the target BS indicator, comprises the target BS indicator, the serving BS determining to continue the handover, wherein if signals, received in both of the first and second frames, comprise the same target BS indicator and the DL channel status report is not received in the interval of preset frames after an expiration of the BS switching period, the serving BS determines to cancel the handover. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A handover apparatus in a communication system, the apparatus comprising:
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a serving Base Station (BS) for alternately receiving a target BS indicator and a downlink (DL) channel status report from a Mobile Station (MS) at intervals of preset frames in a BS switching period for handover of the MS, and for, if a signal, received in at least one of a first frame corresponding to a first reception of the target BS indicator and a second frame corresponding to a second reception of the target BS indicator, comprises the target BS indicator, determining to continue the handover, wherein if signals, received in both of the first and second frames, comprise the same target BS indicator and the DL channel status report is not received in the interval of preset frames after an expiration of the BS switching period, the serving BS determines to cancel the handover. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification