公开(公告)号：US07110765B2

公开(公告)日：2006-09-19

申请号：US10317385

申请日：2002-12-12

Applicant: Messay Amerga ,  Sudhir Halbhavi

Inventor： Messay Amerga ,  Sudhir Halbhavi

IPC: H04Q7/20

CPC classification number: H04W36/30 ,  H04W52/0229 ,  Y02D70/1222 ,  Y02D70/1262 ,  Y02D70/24

Abstract: Techniques for limiting cell reselection in response to a variable channel are disclosed. In one aspect, a measurement of received pilot power from a base station is used as an indication of channel quality. In another aspect, hysteresis is applied to limit cell reselection, wherein the hysteresis is greater in relatively higher quality channel environments and lower in relatively lower channel quality environments. Various other aspects are also presented. These aspects have the benefit of reducing cell reselection, thus increasing time spent in low-power mode, thereby reducing power consumption and increasing standby time.

Abstract translation: 公开了用于限制响应于可变通道的小区重选的技术。 在一个方面，使用来自基站的接收导频功率的测量作为信道质量的指示。 另一方面，应用滞后来限制小区重选，其中在相对较高质量的信道环境中的迟滞较大，并且在相对较低的信道质量环境中较低。 还提出了各种其他方面。 这些方面具有减少小区重选的优点，从而增加了在低功率模式下花费的时间，从而降低功耗并增加了待机时间。

公开(公告)号：US08068834B2

公开(公告)日：2011-11-29

申请号：US10650146

申请日：2003-08-27

Applicant: Messay Amerga ,  Sudhir Halbhavi

Inventor： Messay Amerga ,  Sudhir Halbhavi

IPC: H04W36/00

CPC classification number: H04W48/16 ,  H04W24/00 ,  H04W52/0216 ,  H04W52/0245 ,  Y02D70/122 ,  Y02D70/24

Abstract: Techniques for searching neighbor cells within a fixed time duration are disclosed. In one embodiment, cells in a monitored list are ranked. A first subset of the ranked cells are searched during each cycle in a series of cycles, and a subset of the remainder of ranked cells is searched in each cycle, the subset varying from cycle to cycle. In another embodiment, the ranking and searching of a subset of the ranked list of cells is performed when the number of monitored cells is greater than a pre-determined search number. In yet another embodiment, the complete list of monitored cells is searched when the number of monitored cells is less than or equal to a pre-determined search number. In various embodiments, the searching comprises one or more of intra-frequency, inter-frequency, or inter-RAT searching. Various other embodiments are also presented. Benefits include allowing prescribed levels of intra-frequency, inter-frequency and/or inter-RAT search to be performed allowing for improved base station selection and therefore improved performance and system capacity.

Abstract translation: 公开了在固定持续时间内搜索相邻小区的技术。 在一个实施例中，对受监视列表中的单元进行排名。 在一系列循环中在每个周期期间搜索排名细胞的第一子集，并且在每个周期中搜索排列细胞的剩余部分的子集，该子集从周期到周期变化。 在另一个实施例中，当所监视的小区的数量大于预定的搜索号码时，执行排序的小区列表的子集的排名和搜索。 在另一个实施例中，当受监视的小区的数目小于或等于预定的搜索号码时，搜索所监视的小区的完整列表。 在各种实施例中，搜索包括频率内，频率间或RAT间搜索中的一个或多个。 还提出了各种其它实施例。 优点包括允许执行规定级别的频率内，频率间和/或RAT间搜索，从而改善基站选择，从而提高性能和系统容量。

公开(公告)号：US07133702B2

公开(公告)日：2006-11-07

申请号：US10318695

申请日：2002-12-12

Applicant: Messay Amerga ,  Sudhir Halbhavi

Inventor： Messay Amerga ,  Sudhir Halbhavi

IPC: H04Q7/22 ,  H04B1/40

CPC classification number: H04W48/20 ,  H04B1/70753 ,  H04B1/70754 ,  H04B1/70756 ,  H04B2201/70702 ,  H04B2201/70709 ,  H04W52/0216 ,  H04W52/0219 ,  H04W52/0245 ,  Y02D70/24 ,  Y02D70/40

Abstract: Techniques for cell reacquisition and reselection that increases time spent in low-power mode while effectively monitoring neighbor cells are disclosed. In one aspect, one or more windows around the expected location of the serving cell are searched in the period of time prior to the page indicator. In another aspect, intra-frequency neighbor cells are searched first to determine reselection candidates. Various other aspects are also presented. These aspects have the benefit of increasing time spent in low-power mode, thereby reducing power consumption and increasing standby time.

Abstract translation: 公开了用于在有效监测相邻小区的同时增加在低功率模式下花费的时间的用于小区重新获取和重新选择的技术。 在一个方面，在页面指示符之前的时间段内搜索围绕服务小区的预期位置的一个或多个窗口。 在另一方面，首先搜索频率内相邻小区以确定重选候选。 还提出了各种其他方面。 这些方面具有增加在低功率模式下花费的时间的优点，从而降低功耗并增加待机时间。

公开(公告)号：US08098780B2

公开(公告)日：2012-01-17

申请号：US12711991

申请日：2010-02-24

Applicant: Thejaswi Bharadwaj Madapushi Shesha ,  Brian Dong ,  Messay Amerga ,  Chih-Ping Hsu ,  Parvathanathan Subrahmanya ,  Xiaoming Zhu

Inventor： Thejaswi Bharadwaj Madapushi Shesha ,  Brian Dong ,  Messay Amerga ,  Chih-Ping Hsu ,  Parvathanathan Subrahmanya ,  Xiaoming Zhu

IPC: H03D1/06

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。

公开(公告)号：US20080056422A1

公开(公告)日：2008-03-06

申请号：US11468263

申请日：2006-08-29

Applicant: Anil S. Rao ,  Chandra Kumar ,  Gurdeep Singh ,  Kiran Chikkappa ,  Messay Amerga ,  Maheedhar Gollamudi ,  Sudarshan Keshava

Inventor： Anil S. Rao ,  Chandra Kumar ,  Gurdeep Singh ,  Kiran Chikkappa ,  Messay Amerga ,  Maheedhar Gollamudi ,  Sudarshan Keshava

IPC: H04L7/00

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）。

公开(公告)号：US20070207841A1

公开(公告)日：2007-09-06

申请号：US11283100

申请日：2006-03-06

Applicant: Messay Amerga ,  Bhupesh Umatt ,  Vineet Mittal

Inventor： Messay Amerga ,  Bhupesh Umatt ,  Vineet Mittal

IPC: H04B1/38

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。

公开(公告)号：US20070207824A1

公开(公告)日：2007-09-06

申请号：US11367498

申请日：2006-03-02

Applicant: Supratik Bhattacharjee ,  Messay Amerga ,  Brian Dong ,  Gurdeep Singh

Inventor： Supratik Bhattacharjee ,  Messay Amerga ,  Brian Dong ,  Gurdeep Singh

IPC: H04B7/00

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。

公开(公告)号：US20070042775A1

公开(公告)日：2007-02-22

申请号：US11283115

申请日：2005-11-17

Applicant: Bhupesh Umatt ,  Messay Amerga ,  Vineet Mittal

Inventor： Bhupesh Umatt ,  Messay Amerga ,  Vineet Mittal

IPC: H04Q7/20

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。

公开(公告)号：US20060274823A1

公开(公告)日：2006-12-07

申请号：US11501451

申请日：2006-08-08

Applicant: Jeremy Stein ,  Ivan Fernandez-Corbaton ,  Roland Rick ,  Borislav Ristic ,  Ashok Bhatia ,  Messay Amerga

Inventor： Jeremy Stein ,  Ivan Fernandez-Corbaton ,  Roland Rick ,  Borislav Ristic ,  Ashok Bhatia ,  Messay Amerga

IPC: H04B1/00 ,  H04L27/06

CPC classification number: G01S19/24 ,  G01S5/0215 ,  G01S5/0221 ,  G01S19/21 ,  G01S19/31 ,  G01S19/46

Abstract: A parameter estimator for estimating one or more parameter(s) from a correlation function derived from a signal using a dynamically variable integration time is described. The parameter estimator may be employed in a subscriber station to estimate the time of arrival of one or more base station or sector pilot signals in a wireless communication system. This information may be utilized in an overall advanced forward link trilateration (AFLT) process for estimating the location of the subscriber station.

公开(公告)号：US07095813B2

公开(公告)日：2006-08-22

申请号：US10150687

申请日：2002-05-16

Applicant: Messay Amerga ,  Roland Rick

Inventor： Messay Amerga ,  Roland Rick

IPC: H04L27/06

CPC classification number: H04B1/7085 ,  G01S5/0215 ,  G01S5/0273 ,  G01S19/22 ,  G01S19/428 ,  H04B1/70757 ,  H04B1/7117

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。