Pre-allocated random access identifiers

  • US 8,532,052 B2
  • Filed: 08/02/2012
  • Issued: 09/10/2013
  • Est. Priority Date: 09/01/2006
  • Status: Active Grant
First Claim
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1. A method for handover of an existing communication link with a mobile station from a serving base station to a target base station, the method comprising:

  • allocating, by the target base station, a random access identifier that uniquely identifies the mobile station in a coverage area of the target base station;

    obtaining, by the serving base station from the target base station, an indication of the allocated random access identifier;

    transmitting, by the serving base station to the mobile station over the existing communication link, the indication of the allocated random access identifier;

    receiving, by the mobile station from the serving base station over the existing communication link, the indication of the allocated random access identifier;

    transmitting, by the mobile station to the target base station over a random access channel, the allocated random access identifier;

    receiving, by the target base station from the mobile station over the random access channel, the allocated random access identifier;

    generating, by the target base station, a feedback message comprising an adjustment based on the receiving of the allocated random access identifier by the target base station;

    transmitting, by the target base station to the mobile station, the feedback message;

    receiving, by the mobile station from the target base station, the feedback message; and

    synchronizing the mobile station with the target base station using the adjustment in association with the handover of the existing communication link.

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