Rake receiver finger assignment based on signal path concentration
    1.
    发明授权
    Rake receiver finger assignment based on signal path concentration 有权
    基于信号路径浓度的耙式接收器手指分配

    公开(公告)号:US08098780B2

    公开(公告)日:2012-01-17

    申请号:US12711991

    申请日:2010-02-24

    CPC classification number: H04B1/7117 B60L2200/26

    Abstract: A rake receiver finger assignor is configured to assign a rake receiver finger to a time offset between identified signal path time offsets in accordance with a concentration of identified signal paths from a transmitter to a rake receiver. In accordance with the exemplary embodiment, a number of identified signal paths having time offsets within a time window are observed to determine the concentration of signal paths identified by a path searcher. If the number of identified signal paths indicates a concentrated distribution of signal paths such as during a fat path condition, at least one rake finger is assigned between at a time offset between two identified signal paths.

    Abstract translation: 耙式接收器手指分配器被配置为根据从发射机到耙式接收机的识别的信号路径的浓度,将耙机接收机手指分配到所识别的信号路径时间偏移之间的时间偏移。 根据示例性实施例,观察到在时间窗内具有时间偏移的多个识别的信号路径,以确定由路径搜索器识别的信号路径的浓度。 如果所识别的信号路径的数量表示信号路径的集中分布,例如在脂肪路径条件期间,则在两个识别的信号路径之间的时间偏移处分配至少一个耙指。

    SYSTEM FRAME NUMBER (SFN) EVALUATOR
    2.
    发明申请
    SYSTEM FRAME NUMBER (SFN) EVALUATOR 有权
    系统帧号(SFN)评估器

    公开(公告)号:US20080056422A1

    公开(公告)日:2008-03-06

    申请号:US11468263

    申请日:2006-08-29

    CPC classification number: H04W52/029 H04W76/27 H04W76/28 Y02D70/24

    Abstract: An access terminal (102) reacquires a system frame number (SFN) when a difference between a continuous counter elapsed time (220) and a calculated elapsed time (222) exceeds a threshold. The continuous counter elapsed time (220) is generated by a continuous counter (122) remaining active during a sleep state of the access terminal (102) and the calculated elapsed time (222) is based on a SFN derived from a counter value generated by a discontinuous counter (124) that is deactivated during the sleep state. In one aspect, the continuous counter (122) may be clocked by a continuous clock (118) during a sleep mode and the discontinuous counter (124) may be clocked by a faster clock (120) that is deactivated during the sleep mode. During reactivation after the sleep mode, the discontinuous counter (120) is set, at the counter set time, to a reset counter value (126) corresponding to an SFN indicated by the continuous counter (122).

    Abstract translation: 当连续计数器经过时间(220)和计算出的经过时间(222)之间的差超过阈值时,接入终端(102)重新获取系统帧号(SFN)。 连续计数器经过时间(220)由在接入终端(102)的休眠状态期间保持活动的连续计数器(122)生成,并且所计算的经过时间(222)基于从由 在休眠状态期间停用的不连续计数器(124)。 在一个方面,连续计数器(122)可以在休眠模式期间由连续时钟(118)计时,并且不连续计数器(124)可以由在睡眠模式期间被去激活的更快的时钟(120)来计时。 在休眠模式之后的再激活期间,不连续计数器(120)在计数器设定时间被设置为对应于由连续计数器(122)指示的SFN的复位计数器值(126)。

    Sleep mode for wireless communication device during out of service operation
    3.
    发明申请
    Sleep mode for wireless communication device during out of service operation 失效
    无线通信设备在停止运行时的休眠模式

    公开(公告)号:US20070207841A1

    公开(公告)日:2007-09-06

    申请号:US11283100

    申请日:2006-03-06

    CPC classification number: H04W52/287 H04W52/0229 Y02D70/1222 Y02D70/1242

    Abstract: The disclosure is directed to techniques for performing service signal searches with reduced power consumption when a wireless communication device is operating out of service. The techniques include placing the wireless communication device in a “deep sleep” mode when the wireless communication device is not in service. When operating in the deep sleep mode, the wireless communication device reduces power consumption by not looking for paging signals or searching for service signals. The wireless communication device then may periodically enter a wake-up period during which power consumption is increased to perform signal searches in one or more frequency bands. The wireless communication device returns to the deep sleep mode when the signal searches are unsuccessful.

    Abstract translation: 本公开涉及当无线通信设备运行停止服务时,以降低的功率消耗执行服务信号搜索的技术。 这些技术包括当无线通信设备不在服务时将无线通信设备置于“深度睡眠”模式。 当在深度睡眠模式下操作时,无线通信设备通过不寻找寻呼信号或搜索服务信号来降低功耗。 然后,无线通信设备可以周期性地进入唤醒周期,在该唤醒周期期间增加功耗以在一个或多个频带中执行信号搜索。 当信号搜索不成功时,无线通信设备返回深度睡眠模式。

    Efficient utilization of transmission gaps for cell measurements
    4.
    发明申请
    Efficient utilization of transmission gaps for cell measurements 有权
    有效利用传输间隙进行细胞测量

    公开(公告)号:US20070207824A1

    公开(公告)日:2007-09-06

    申请号:US11367498

    申请日:2006-03-02

    CPC classification number: H04W24/10

    Abstract: A terminal communicates with a first wireless network and obtains a list of cells in a second wireless network to measure. The terminal operates in a compressed mode and receives multiple transmission gap pattern sequences for different measurement purposes, e.g., RSSI measurements, BSIC identification, and BSIC re-confirmation. The terminal utilizes each transmission gap for its designated purpose or an alternate purpose. For each transmission gap, the designated purpose for the transmission gap is ascertained, and whether the transmission gap is usable for an alternate purpose is also determined based on at least one criterion. The transmission gap is used for the alternate purpose if the at least one criterion is satisfied and is used for the designated purpose otherwise. For example, a transmission gap designated for RSSI measurement may be used for BSIC identification, a transmission gap designed for BSIC identification or BSIC re-confirmation may be used for RSSI measurement, and so on.

    Abstract translation: 终端与第一无线网络进行通信,并获得第二无线网络中的小区列表以进行测量。 终端以压缩模式操作并且接收用于不同测量目的的多个传输间隙模式序列,例如RSSI测量,BSIC标识和BSIC重新确认。 终端利用每个传输间隙用于其指定目的或替代目的。 对于每个传输间隙,确定传输间隙的指定目的,并且传输间隙是否可用于替代目的也基于至少一个标准来确定。 如果满足至少一个标准并且用于指定目的,则传输间隙用于替代目的。 例如,指定用于RSSI测量的传输间隙可以用于BSIC标识,为BSIC标识设计的传输间隙或BSIC重新确认可以用于RSSI测量,等等。

    System search to detect for a wireless communication network in a crowded frequency band
    5.
    发明申请
    System search to detect for a wireless communication network in a crowded frequency band 有权
    系统搜索在拥挤的频带中检测无线通信网络

    公开(公告)号:US20070042775A1

    公开(公告)日:2007-02-22

    申请号:US11283115

    申请日:2005-11-17

    CPC classification number: H04W48/16

    Abstract: Techniques for efficiently performing system search to obtain service from a wireless system as quickly as possible are described. A terminal initially looks for service from a first (e.g., W-CDMA) system. The terminal identifies network(s) in the first system from which service was received in the past and performs acquisition on each network to look for service. If service is not found for the first system, then the terminal performs a search for a second (e.g., GSM) system. If service is found on the second system, then the terminal obtains service from the second system and avoids a frequency scan for the first system. Otherwise, the terminal performs a frequency scan for the first system using the search results for the second system. The terminal may obtain a list of RF channels detected for the second system and may omit these RF channels and possibly some other RF channels around these RF channels from the frequency scan.

    Abstract translation: 描述了用于有效地执行系统搜索以尽可能快地从无线系统获得服务的技术。 终端首先从第一(例如W-CDMA)系统寻找服务。 终端识别过去接收服务的第一系统中的网络,并在每个网络上执行获取以寻找服务。 如果没有为第一系统找到服务,则终端执行对第二(例如,GSM)系统的搜索。 如果在第二系统上找到服务,则终端从第二系统获得服务,并避免对第一系统进行频率扫描。 否则,终端使用第二系统的搜索结果对第一系统进行频率扫描。 终端可以获得针对第二系统检测到的RF信道的列表,并且可以从频率扫描中省略这些RF信道以及可能的这些RF信道周围的一些其它RF信道。

    System and method for the detection and compensation of radio signal time of arrival errors
    7.
    发明授权
    System and method for the detection and compensation of radio signal time of arrival errors 有权
    用于检测和补偿无线电信号到达时间错误的系统和方法

    公开(公告)号:US07095813B2

    公开(公告)日:2006-08-22

    申请号:US10150687

    申请日:2002-05-16

    Abstract: A system and method to reduce-the effects of TOA errors. A mobile unit, generates a correlation pulse when a signal transmitted from a base station is detected. The transmitted signal may be reflected or defracted such that multipath signals arrive at the mobile unit, leading to distortion in the generated correlation pulse and errors in accurate TOA measurements. The system models the response function and calculates the width of the pulse using the modeling function with a dynamically adjustable factor to indicate at what point down from the peak the pulse width will be calculated. Based on calculation of pulse width, a type of multipath signal may be determined and an appropriate correction factor applied to the measured TOA to provide a more accurate TOA determination. The system may apply correction factors to TOA signals from base stations in a mobile telephone unit or from signals received from GPS satellites.

    Abstract translation: 减少TOA错误影响的系统和方法。 当检测到从基站发送的信号时,移动单元产生相关脉冲。 传输的信号可以被反射或消除,使得多径信号到达移动单元,导致产生的相关脉冲的失真和准确的TOA测量中的误差。 系统对响应函数进行建模,并使用具有动态可调整因子的建模函数计算脉冲的宽度,以指示从峰值下降到什么点将计算脉冲宽度。 基于脉冲宽度的计算,可以确定一种类型的多路径信号,并将适当的校正因子应用于所测量的TOA以提供更准确的TOA确定。 该系统可以对来自移动电话单元中的基站的TOA信号或从GPS卫星接收的信号应用校正因子。

    Reducing search time using known scrambling code offsets
    8.
    发明申请
    Reducing search time using known scrambling code offsets 失效
    使用已知的扰码偏移减少搜索时间

    公开(公告)号:US20050047492A1

    公开(公告)日:2005-03-03

    申请号:US10650547

    申请日:2003-08-27

    CPC classification number: H04B1/70735 H04B1/7083 H04B2201/70702

    Abstract: Techniques for reducing search time using known scrambling code offsets are disclosed. In one embodiment, a plurality of search results is generated by correlating a received signal with a synchronization sequence. The plurality of search results is reduced by removing any results whose offset is within a threshold of a stored offset. In another embodiment, stored offsets correspond to previously identified cells. In yet another embodiment, a searcher further correlates the received signal with a scrambling code over a search window to produce a list search result. The scrambling code may be associated with one of the cells in a neighbor list. Various other embodiments are also presented. Benefits include efficient searching which allows for improved base station selection and therefore improved performance and system capacity.

    Abstract translation: 公开了使用已知的扰码偏移减少搜索时间的技术。 在一个实施例中,通过将接收的信号与同步序列相关联来产生多个搜索结果。 通过去除其偏移在所存储的偏移的阈值内的任何结果来减少多个搜索结果。 在另一个实施例中,存储的偏移对应于先前识别的小区。 在另一个实施例中,搜索者进一步将接收到的信号与搜索窗口上的扰码相关联,以产生列表搜索结果。 扰码可以与邻居列表中的一个小区相关联。 还提出了各种其它实施例。 优点包括有效的搜索,可以改善基站选择,从而提高性能和系统容量。

    Assigning clusters of demodulation elements in a spread spectrum system
    9.
    发明授权
    Assigning clusters of demodulation elements in a spread spectrum system 有权
    在扩频系统中分配解调元素簇

    公开(公告)号:US06731676B2

    公开(公告)日:2004-05-04

    申请号:US09968344

    申请日:2001-09-28

    CPC classification number: H04B1/7117 H04B7/0697

    Abstract: An apparatus, such as a subscriber unit or a base station within a spread spectrum communication system, may add one or more additional “virtual” paths to a list of candidate paths when assigning demodulation elements. These “virtual” paths are added as candidate paths even though a corresponding peak was not necessarily detected within a received spread spectrum system. The list of paths may include a first path having a time offset approximately equal to a time offset for one of the demodulation elements, and the virtual path having a short time separation from the first path. The time separation between the paths may be, for example, less than 2 chips.

    Abstract translation: 扩展频谱通信系统中的诸如用户单元或基站之类的装置在分配解调元件时可以向候选路径列表添加一个或多个附加的“虚拟”路径。 这些“虚拟”路径被添加为候选路径,即使在接收的扩频系统中不一定检测到相应的峰值。 路径列表可以包括具有近似等于解调元件之一的时间偏移的时间偏移的第一路径,并且虚拟路径具有与第一路径的短时间间隔。 路径之间的时间间隔可以是例如小于2个码片。

    Method and apparatus for reducing frequency space from frequency search
    10.
    发明授权
    Method and apparatus for reducing frequency space from frequency search 有权
    从频率搜索中减少频率空间的方法和装置

    公开(公告)号:US08145132B2

    公开(公告)日:2012-03-27

    申请号:US12212064

    申请日:2008-09-17

    Abstract: A method and apparatus for reducing frequency space from code space search is disclosed in a wireless network. The method and apparatus reduces the frequency space without compromising the probability of detection, so that user equipment can expedite system acquisition and reduce power consumption. To reduce the frequency space, the described aspects note that the power spectral density of the WCDMA signal is essentially flat within the channel bandwidth. By capturing in-phase quadrature samples and doing frequency domain analysis of the signal in bandwidth around the center frequency, to the described aspects can eliminate some channels from the WCDMA code space search during frequency scan.

    Abstract translation: 在无线网络中公开了一种用于从代码空间搜索减少频率空间的方法和装置。 该方法和装置降低了频率空间,而不损害检测的概率,使得用户设备可以加快系统采集并降低功耗。 为了降低频率空间,所描述的方面注意到WCDMA信号的功率谱密度在信道带宽内基本上是平坦的。 通过捕获同相正交采样并对围绕中心频率的带宽中的信号进行频域分析,所描述的方面可以在频率扫描期间从WCDMA码空间搜索中消除一些信道。

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