Pre-allocated random access identifiers

  • US 9,332,572 B2
  • Filed: 08/01/2013
  • Issued: 05/03/2016
  • Est. Priority Date: 09/01/2006
  • Status: Active Grant
First Claim
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1. A method of handover of a mobile station to a target base station, the method comprising:

  • transmitting, from the target base station, an indication of a reserved set of access identifiers from a plurality of access identifiers for non-contention access over a shared random access channel in a coverage area of the target base station;

    communicating, from the target base station, an indication of a non-contention reserved access identifier, the non-contention reserved access identifier from the reserved set of access identifiers;

    receiving, at the target base station, from the mobile station, during a handover of the mobile station to the target base station, the non-contention reserved access identifier over the shared random access channel in the coverage area of the target base station, the received non-contention reserved access identifier enabling identification of the mobile station by the target base station; and

    transmitting, from the target base station, a feedback message to the mobile station, the feedback message based at least in part on a parameter of a signal associated with the received non-contention reserved access identifier, the feedback message comprising at least a timing adjustment useable for synchronization of the mobile station with the target base station.

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