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公开(公告)号：AT397836T
公开(公告)日：2008-06-15
申请号：AT01951058
申请日：2001-07-11
Applicant: QUALCOMM INC
Inventor： NEW WEN , LEVIN MARK , HUGHES ROBBIN
Abstract: Techniques to efficiently process paging channels in an asynchronous wireless communication system. In one aspect, if the base stations are not synchronized with each other and a remote terminal's designated page time is different from base station to base station, the remote terminal can wake up based on the earliest base station in a reacquisition search list that includes candidate base stations to which the remote terminal may be handed off. In another aspect, the criteria to select base stations for evaluation as reacquisition targets may be based on the received power of the base stations as well as their timing, both of which may be made relative to that of a preferred base station. In yet another aspect, the remote terminal may wake up multiple times in a particular paging cycle (i.e., a frame cycle or a DRX cycle) if there are one or more candidates base station to which the remote terminal may be handed off.
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公开(公告)号：AT368967T
公开(公告)日：2007-08-15
申请号：AT02759529
申请日：2002-08-29
Applicant: QUALCOMM INC
Inventor： NEW WEN
Abstract: Methods and apparatus are presented to optimize the likelihood of a successful acquisition of frame timing information of an asynchronous base station by providing a mechanism that copes with short-term degradations caused by a dynamic radio environment. An acquisition search is performed in a plurality of stages, wherein a declaration indicating a failure at a stage is delayed through the use of a verification stage. The verification stage can be repeated a variable number of times. The number of repetitions of the verification stage can be dependent upon the stage at which the failure occurred. Declaration of failure occurs only after the predetermined number of verification searches have been performed.
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