公开(公告)号：US20050047492A1

公开(公告)日：2005-03-03

申请号：US10650547

申请日：2003-08-27

申请人： Messay Amerga ,  Thomas Wilborn ,  Gurdeep Singh

发明人： Messay Amerga ,  Thomas Wilborn ,  Gurdeep Singh

IPC分类号： H04B1/707

CPC分类号： H04B1/70735 ,  H04B1/7083 ,  H04B2201/70702

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07369534B2

公开(公告)日：2008-05-06

申请号：US10650547

申请日：2003-08-27

申请人： Messay Amerga ,  Thomas B. Wilborn ,  Gurdeep Singh

发明人： Messay Amerga ,  Thomas B. Wilborn ,  Gurdeep Singh

IPC分类号： H04J3/06

CPC分类号： H04B1/70735 ,  H04B1/7083 ,  H04B2201/70702

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07986661B2

公开(公告)日：2011-07-26

申请号：US11367498

申请日：2006-03-02

申请人： Supratik Bhattacharjee ,  Messay Amerga ,  Brian Dong ,  Gurdeep Singh

发明人： Supratik Bhattacharjee ,  Messay Amerga ,  Brian Dong ,  Gurdeep Singh

IPC分类号： H04W4/00

CPC分类号： H04W24/10

摘要： 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.

摘要翻译： 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：US20080056422A1

公开(公告)日：2008-03-06

申请号：US11468263

申请日：2006-08-29

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

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

IPC分类号： H04L7/00

CPC分类号： H04W52/029 ,  H04W76/27 ,  H04W76/28 ,  Y02D70/24

摘要： 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).

摘要翻译： 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：US20070207824A1

公开(公告)日：2007-09-06

申请号：US11367498

申请日：2006-03-02

申请人： Supratik Bhattacharjee ,  Messay Amerga ,  Brian Dong ,  Gurdeep Singh

发明人： Supratik Bhattacharjee ,  Messay Amerga ,  Brian Dong ,  Gurdeep Singh

IPC分类号： H04B7/00

CPC分类号： H04W24/10

摘要： 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.

摘要翻译： 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：US07734264B2

公开(公告)日：2010-06-08

申请号：US11468263

申请日：2006-08-29

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

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

IPC分类号： H04B1/04

CPC分类号： H04W52/029 ,  H04W76/27 ,  H04W76/28 ,  Y02D70/24

摘要： 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).

摘要翻译： 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：US08098780B2

公开(公告)日：2012-01-17

申请号：US12711991

申请日：2010-02-24

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

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

IPC分类号： H03D1/06

CPC分类号： H04B1/7117 ,  B60L2200/26

摘要： 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.

摘要翻译： 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：US20070207841A1

公开(公告)日：2007-09-06

申请号：US11283100

申请日：2006-03-06

申请人： Messay Amerga ,  Bhupesh Umatt ,  Vineet Mittal

发明人： Messay Amerga ,  Bhupesh Umatt ,  Vineet Mittal

IPC分类号： H04B1/38

CPC分类号： H04W52/287 ,  H04W52/0229 ,  Y02D70/1222 ,  Y02D70/1242

摘要： 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.

摘要翻译： 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：US20070042775A1

公开(公告)日：2007-02-22

申请号：US11283115

申请日：2005-11-17

申请人： Bhupesh Umatt ,  Messay Amerga ,  Vineet Mittal

发明人： Bhupesh Umatt ,  Messay Amerga ,  Vineet Mittal

IPC分类号： H04Q7/20

CPC分类号： H04W48/16

摘要： 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.

摘要翻译： 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

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

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

IPC分类号： H04B1/00 ,  H04L27/06

CPC分类号： G01S19/24 ,  G01S5/0215 ,  G01S5/0221 ,  G01S19/21 ,  G01S19/31 ,  G01S19/46

摘要： 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.