公开(公告)号：WO2004054142A3

公开(公告)日：2004-09-16

申请号：PCT/US0338802

申请日：2003-12-04

Applicant: QUALCOMM INC

Inventor： JOSHI ABHAY A ,  NEUFELD ARTHUR J ,  YOON STEVEN ,  EKVETCHAVIT THUNYACHATE

IPC: H04W48/20 ,  H04W52/02 ,  H04B1/707

CPC classification number: H04W48/20 ,  H04W52/0225 ,  H04W52/0245 ,  Y02D70/00

Abstract: A wireless mobile telephone (400) is operated so as to manage the performance of "off-frequency searches," that is, searches for base station pilot signals that differ in frequency from the pilot signals in the mobile station's active set. Whenever frequency searching is performed (such as responsive to emerging from a reduced-power sleep mode), the mobile station performs on-frequency pilot signal searching (902) upon a prescribed active set frequency. Only if a prescribed off-frequency searching condition (903-908) is satisfied, the mobile station additionally performs off-frequency pilot signal searching (912) upon one or more neighboring base stations' frequencies.

Abstract translation: 操作无线移动电话（400）以管理“非频率搜索”的性能，即，搜索与移动台的活动集中的导频信号不同的基站导频信号。 无论何时执行频率搜索（例如响应于从低功耗睡眠模式出来），移动台根据规定的活动设定频率执行频率导频信号搜索（902）。 只有满足规定的偏频搜索条件（903-908）时，移动台在一个或多个相邻基站的频率上附加地执行非频率导频信号搜索（912）。

公开(公告)号：WO03015307A3

公开(公告)日：2003-08-07

申请号：PCT/US0225470

申请日：2002-08-08

Applicant: QUALCOMM INC

Inventor： JOSHI ABHAY A ,  NEUFELD ARTHUR JAMES

IPC: H04B1/7073 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/709 ,  H04B1/707

CPC classification number: H04B1/70751 ,  H04B1/70735 ,  H04B1/7077 ,  H04B1/709 ,  H04B2201/70701 ,  H04B2201/70702

Abstract: Systems and techniques are disclosed wherein a gated pilot signal can be acquired by searching for a first gated pilot signal, deriving timing information from the search for the first gated pilot signal, and searching for a second gated pilot signal using the timing information. This can be implemented in a variety of fashions including a receiver with a searcher configured to generate a bit sequence, a correlator configured to correlate a received signal with the bit sequence, and a processor configured to detect a first gated pilot signal as a function of the correlation, derive timing information from the first gated pilot signal, and detect a second gated pilot signal by using the timing information to control the bit sequence generated by the searcher.

Abstract translation: 公开了系统和技术，其中可以通过搜索第一选通导频信号，从搜索第一选通导频信号导出定时信息，并且使用定时信息搜索第二选通导频信号来获取选通导频信号。 这可以以各种方式来实现，包括具有被配置为生成比特序列的搜索器的接收器，被配置为将接收到的信号与比特序列相关的相关器，以及被配置为检测第一选通导频信号作为 相关性，从第一门控导频信号导出定时信息，并且通过使用定时信息来检测第二门控导频信号，以控制由搜索器生成的比特序列。

公开(公告)号：WO2004043128A3

公开(公告)日：2005-02-03

申请号：PCT/US0334502

申请日：2003-10-29

Applicant: QUALCOMM INC

Inventor： JOSHI ABHAY A ,  HUTCHISON JAMES A ,  BLACK PETER J ,  TURNER SIMON ,  EKVETCHAVIT THUNYACHATE

IPC: H04L12/28 ,  H04W48/18 ,  H04W88/06 ,  H04Q7/38

CPC classification number: H04W48/18 ,  H04W88/06 ,  Y02D70/00 ,  Y02D70/1224

Abstract: Techniques to efficiently attempt acquisition of a packet data system (e.g., an IS-856 system). If a terminal has acquired one or more channels in a voice/data system (e.g., an IS-2000 system), then it can attempt acquisition on channels in the packet data system that are co-located with the acquired channels in the voice/data system. Multiple acquisition modes may be used, and on-going acquisition attempts on the co-located channels may be performed using one acquisition mode at a time in order to reduce power consumption. Acquisition attempts may be performed in a "ping-pong" manner to improve the likelihood of acquisition. For a ping-pong search, an acquisition attempt is made on the most recently acquired channel prior to an acquisition attempt on each of the remaining channels. Received signal strength estimates may also be obtained for selected channels and may be used to determine whether or not to attempt acquisition on these channels.

Abstract translation: 有效地尝试采集分组数据系统（例如，IS-856系统）的技术。 如果终端已经在语音/数据系统（例如，IS-2000系统）中获取了一个或多个信道，则它可以尝试在分组数据系统中与所获取的信道在与语音/ 数据系统 可以使用多个采集模式，并且可以一次使用一个采集模式来执行同位置信道上的持续采集尝试，以便降低功耗。 收购尝试可以以“乒乓”方式进行，以提高获取的可能性。 对于乒乓搜索，在对每个剩余通道进行获取尝试之前，在最近获取的通道上进行采集尝试。 也可以对所选择的信道获得接收的信号强度估计，并且可以用于确定是否尝试在这些信道上进行采集。