PRE-ALLOCATED RANDOM ACCESS IDENTIFIERS

  • US 20160007382A1
  • Filed: 09/15/2015
  • Published: 01/07/2016
  • Est. Priority Date: 09/01/2006
  • Status: Active Grant
First Claim
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1. A method of operating a wireless cellular system, comprising:

  • transmitting, 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 by a mobile station in a coverage area of the serving base station;

    transmitting, from a target base station, an indication of a second reserved set of access identifiers usable for non-contention access over a second random access channel by the mobile station in a coverage area of the target base station;

    enabling the mobile station to obtain, during a handover of the mobile station from the serving base station to the target base station, an indication of a non-contention reserved access identifier identifying the mobile station in the coverage area of the target base station, the non-contention reserved access identifier belonging to the second reserved set of access identifiers;

    receiving, at the target base station, from the mobile station, the non-contention reserved access identifier over the second random access channel;

    transmitting, to the mobile station, from the target base station, a feedback message comprising a timing adjustment; and

    receiving, at the target base station, a transmission from the mobile station, the transmission characterized by at least one adjusted operating parameter based at least in part on the feedback message.

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