Pre-allocated random access identifiers

CAFC
  • US 9,226,320 B1
  • Filed: 08/20/2015
  • Issued: 12/29/2015
  • Est. Priority Date: 09/01/2006
  • Status: Active Grant
First Claim
Patent Images

1. A method of operating a mobile station, comprising:

  • receiving, from a serving base station, an indication of a first reserved set of access identifiers usable for non-contention access over a first random access channel in a coverage area of the serving base station;

    obtaining, during a handover of the mobile station from the serving base station to a target base station, an indication of a non-contention reserved access identifier identifying the mobile station in a coverage area of the target base station;

    transmitting the non-contention reserved access identifier to the target base station over a second random access channel in the coverage area of the target base station;

    receiving, from the target base station, a feedback message comprising a timing adjustment; and

    adjusting at least one operating parameter of a transmission from the mobile station to the target base station based at least in part on the feedback message.

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