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METHOD AND APPARATUS FOR SHORT HANDOVER LATENCY IN WIRELESS COMMUNICATION SYSTEM USING BEAM FORMING

  • US 20130083774A1
  • Filed: 09/28/2012
  • Published: 04/04/2013
  • Est. Priority Date: 09/29/2011
  • Status: Active Grant
First Claim
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1. A method for handover in a Mobile Station (MS) of a wireless communication system which adjusts a beam direction, the method comprising:

  • sending a scan request message for scanning a downlink (DL) beam or a DL beam and uplink (UL) beam with respect to a serving base station (BS) and a neighboring BS, to the serving BS;

    receiving a scan response message;

    determining the DL beam or the DL beam and UL beam for the MS by performing scanning or the scanning and association with the serving BS and the neighboring BS based on the scan response message;

    sending a scan report message comprising a result of the scanning or the scanning and the association to the serving BS;

    when receiving an air handover (HO) request message from the serving BS, generating an air-HO response message comprising information of a neighboring handover BS to which the MS hands over based on the air-HO request message;

    performing beam selection with the neighboring handover BS based on the air-HO request message; and

    performing handover, and transmitting and receiving data to and from the neighboring handover BS.

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