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DOWNLINK PACKET DATA CONVERGENCE PROTOCOL BEHAVIOR DURING HANDOVER

  • US 20080310368A1
  • Filed: 06/17/2008
  • Published: 12/18/2008
  • Est. Priority Date: 06/18/2007
  • Status: Active Grant
First Claim
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1. A method for maintaining an order of received data units during a handover procedure in a wireless communication system, the method comprising:

  • receiving a plurality of data units from a source base station according to a sequence prior to handover to a target base station, wherein each data unit includes a sequence number;

    receiving at least one data unit having a sequence number after handover from a target base station; and

    delivering to a higher layer all data units received from the source base station prior to handover and having sequence numbers smaller than a sequence number of the at least one data unit received from the target base station after handover.

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