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1. 发明授权

US06765887B1 Method and apparatus for processing a received transmission based on processing delays requirement 有权
标题翻译：基于处理延迟要求处理接收的传输的方法和装置
公开(公告)号：US06765887B1
公开(公告)日：2004-07-20
申请号：US09657220
申请日：2000-09-06
申请人： Da-Shan Shiu , Avneesh Agrawal , Daisuke Terasawa
发明人： Da-Shan Shiu , Avneesh Agrawal , Daisuke Terasawa
IPC分类号： H04Q700
CPC分类号： H04W28/18 , H04B7/2628
摘要： Techniques for processing transmissions in a communications (e.g., CDMA) system. Samples are received and assembled into one or more traffics, with each traffic including one or more portions (e.g., radio frames, coded blocks) suitable for processing independently. The priority of each portion is determined based on its processing delays requirement, which can be estimated based on, for example, the time interval over which the samples in the traffic are interleaved, the processing deadline, and so on. A portion in a traffic having the highest priority is selected and scheduled for processing. The processing can include reordering the samples in the selected portion in accordance with a particular reordering scheme, accumulating redundant samples and inserting place holders (e.g., don't cares) for deleted samples in the selected portion, and decoding the reordered samples in the selected portion. The processing of the traffic may be interrupted, in which case the state information related to the processing of the interrupted traffic is saved. A portion in another traffic can then be selected and scheduled for processing. Thereafter, the processing on the interrupted traffic can be resumed using the saved state information.
摘要翻译：用于在通信（例如，CDMA）系统中处理传输的技术。样本被接收并组装成一个或多个业务，每个业务包括一个或多个适合独立处理的部分（例如，无线电帧，编码块）。每个部分的优先级基于其处理延迟要求来确定，该处理延迟要求可以基于例如业务中的样本交错的时间间隔，处理期限等来估计。具有最高优先级的流量中的一部分被选择并被调度用于处理。该处理可以包括根据特定的重排序方案重新排序所选部分中的样本，累积冗余样本并插入所选部分中被删除样本的占位符（例如，不关心），以及对所选择的部分中的重排序样本进行解码一部分。流量的处理可能被中断，在这种情况下，与处理中断流量相关的状态信息被保存。然后可以选择和调度另一个业务中的一部分进行处理。此后，可以使用保存的状态信息恢复对中断业务的处理。

2. 发明授权

US06624767B1 Data buffer structure for asynchronously received physical channels in a CDMA system 有权
标题翻译：用于在CDMA系统中异步接收的物理信道的数据缓冲器结构
公开(公告)号：US06624767B1
公开(公告)日：2003-09-23
申请号：US09655666
申请日：2000-09-06
申请人： Da-Shan Shiu , Avneesh Agrawal , Daisuke Terasawa
发明人： Da-Shan Shiu , Avneesh Agrawal , Daisuke Terasawa
IPC分类号： H03M700
CPC分类号： H03M13/271 , H04B1/707
摘要： A receiver unit for use in a CDMA system and including a channel processor, a buffer, and a data processor. The channel processor processes samples for one or more physical channels for each time interval to provide symbols. The buffer is operated as a number of memory banks. Each memory bank is associated with a respective time interval and stores symbols associated with that time interval. The data processor retrieves symbols for a particular “traffic” from one or more memory banks and processes the retrieved symbols. For the W-CDMA system, each traffic includes one or more radio frames for a particular transmission time interval. The receiver unit typically further includes a controller that directs the storage and retrieval of symbols to and from the memory banks and a decoder that decodes symbols processed by the data processor. For each time interval, radio frames for physical channels received starting within that time interval can be stored to permutated locations of designated sections of the memory bank. Radio frames associated with a particular CCTrCH can be stored to contiguous sections of the memory bank. Symbols for a particular traffic can be retrieved from one or more memory banks in permutated order.
摘要翻译：一种用于CDMA系统并包括信道处理器，缓冲器和数据处理器的接收器单元。信道处理器针对每个时间间隔处理一个或多个物理信道的采样以提供符号。缓冲器作为多个存储体操作。每个存储体与相应的时间间隔相关联并且存储与该时间间隔相关联的符号。数据处理器从一个或多个存储体检索特定“流量”的符号并处理所检索的符号。对于W-CDMA系统，每个业务包括用于特定传输时间间隔的一个或多个无线电帧。接收器单元通常还包括一个控制器，其指示将符号存储和检索到存储器组和从存储体中解码，以及解码器，其对由数据处理器处理的符号进行解码。对于每个时间间隔，在该时间间隔内开始接收的物理信道的无线电帧可被存储到存储体的指定部分的排列位置。与特定CCTrCH相关联的无线帧可以存储到存储体的相邻部分。可以根据排列顺序从一个或多个存储体检索特定业务的符号。

3. 发明授权

US06798826B1 Method and apparatus for performing reverse rate matching in a CDMA system 有权
标题翻译：用于在CDMA系统中执行反向速率匹配的方法和装置
公开(公告)号：US06798826B1
公开(公告)日：2004-09-28
申请号：US09707349
申请日：2000-11-06
申请人： Da-Shan Shiu , Avneesh Agrawal
发明人： Da-Shan Shiu , Avneesh Agrawal
IPC分类号： H04B1707
CPC分类号： H04L1/0071 , H04L1/0045 , H04L1/0067
摘要： Techniques for processing symbols received for a (transport) channel in a (W-CDMA) communication system. According to the W-CDMA standard, the coded bits of a transport channel are first rate-matched, then first de-interleaved, and then segmented to form X radio frames, where X is the transmission time interval (TTI) of the transport channel. The radio frames can be processed in various manners. In one aspect, the rate-matching and first interleaving can be applied to the coded bits of the transport channel X times to generate a radio frame with each application. In accordance with a method, the correspondence between the coded bit xm and the rate-matched bits yn, and between the rate-matched bits yn and the interleaved bits zk, can be computed based on direct or iterative computations. In another aspects, the first de-interleaving and inverse rate-matching can be applied onto each rad it is received, without having to wait for the remaining radio frames in the TTI to be received. The correspondences between the received symbols zk′, de-interleaved symbols yn′ and de-rate-matched symbols xm′ can be computed. Reduced buffering requirement and reduced processing delays may be achieved based on the above.
摘要翻译：用于处理（W-CDMA）通信系统中为（传输）信道接收的符号的技术。根据W-CDMA标准，传输信道的编码比特首先进行速率匹配，然后首先解交织，然后分段形成X个无线帧，其中X是传输信道的传输时间间隔（TTI）。无线电帧可以以各种方式进行处理。在一个方面，速率匹配和第一交织可以被应用于传输信道X的编码比特，以产生每个应用的无线帧。根据一种方法，可以基于直接或迭代计算来计算编码比特xm和速率匹配比特yn之间以及速率匹配比特yn和交织比特zk之间的对应关系。在另一方面，可以将第一解交织和反比特率匹配应用于其接收的每个弧度上，而不必等待接收到TTI中的剩余无线电帧。可以计算接收符号zk'，解交织符号yn'和解速率匹配符号xm'之间的对应关系。基于上述可以实现减少缓冲要求和减少的处理延迟。

4. 发明授权

US07187708B1 Data buffer structure for physical and transport channels in a CDMA system 有权
标题翻译：用于CDMA系统中物理和传输信道的数据缓冲器结构
公开(公告)号：US07187708B1
公开(公告)日：2007-03-06
申请号：US09678645
申请日：2000-10-03
申请人： Da-Shan Shiu , Avneesh Agrawal
发明人： Da-Shan Shiu , Avneesh Agrawal
IPC分类号： H04B1/69
CPC分类号： H04B1/707 , H04B2201/70703
摘要： A buffer structure for storing symbols received via a number of (e.g., physical or transport) channels. Each channel is associated with a particular time interval (e.g., a radio frame period or a transmission time interval (TTI)) over which the received symbols are processed (e.g., interleaved). The buffer structure includes a buffer and an address generator. The buffer is partitioned into a number of sections. One section is assigned to each channel being processed. Each section can be operated as a circular buffer. The address generator provides addresses for writing symbols to the assigned sections. If the buffer structure is used for the transport channels, the sections can be assigned to the transport channels based on the associated TTIs (e.g., in descending order of TTIs). For each coded composite transport channel (CCTrCH), the transport channels in the CCTrCH can be assigned to sections defined starting from a respective initial location (e.g., the top or bottom of the buffer) and continuing along a respective direction of the buffer (e.g., downward or upward).
摘要翻译：一种用于存储经由多个（例如物理或传输）信道接收的符号的缓冲结构。每个信道与特定的时间间隔（例如，无线电帧周期或传输时间间隔（TTI））相关联，在该时间间隔处处理（例如，交织）接收到的符号。缓冲器结构包括缓冲器和地址发生器。缓冲区被分割成多个部分。一个部分被分配给正在处理的每个通道。每个部分都可以作为循环缓冲器运行。地址生成器提供用于将符号写入分配的部分的地址。如果缓冲结构用于传输信道，则可以基于相关联的TTI（例如，以TTI的降序）将这些部分分配给传输信道。对于每个编码的复合传输信道（CCTrCH），CCTrCH中的传输信道可以被分配到从相应的初始位置（例如，缓冲器的顶部或底部）开始定义并沿着缓冲器的相应方向（例如，，向下或向上）。

5. 发明授权

US08326257B2 Utilizing speed and position information to select an operational mode in a wireless communication system 失效
标题翻译：利用速度和位置信息来选择无线通信系统中的操作模式
公开(公告)号：US08326257B2
公开(公告)日：2012-12-04
申请号：US10357793
申请日：2003-02-03
申请人： Da-Shan Shiu , Daisuke Terasawa
发明人： Da-Shan Shiu , Daisuke Terasawa
IPC分类号： H04M11/00
CPC分类号： H04W8/02 , H04B7/022 , H04B7/0613 , H04B7/0617 , H04B7/0619 , H04B7/0669 , H04W64/00 , H04W99/00
摘要： A method and apparatus for determining an operational mode for use in a wireless communication system based on a location, a velocity, or both, of a wireless communication device (WCD) in relation to a wireless network infrastructure is described. The selected mode can be used by various devices within the communication system. Modes that are selected include transmit diversity and site selection diversity.
摘要翻译：描述了一种用于基于无线通信设备（WCD）相对于无线网络基础设施的位置，速度或两者确定在无线通信系统中使用的操作模式的方法和装置。所选择的模式可以由通信系统内的各种设备使用。选择的模式包括发射分集和选址多样性。

6. 发明授权

US07420947B2 Communication system performance using position location information 有权
标题翻译：通信系统性能使用位置信息
公开(公告)号：US07420947B2
公开(公告)日：2008-09-02
申请号：US10650270
申请日：2003-08-28
申请人： Andrew Sendonaris , Da-Shan Shiu , David Patterson , Pavathanathan Subrahmanya , Daisuke Terasawa
发明人： Andrew Sendonaris , Da-Shan Shiu , David Patterson , Pavathanathan Subrahmanya , Daisuke Terasawa
IPC分类号： H04B7/216
CPC分类号： H04B1/70754
摘要： A method and apparatus for using information about a mobile terminal's location relative to a base station can improve performance of a communication system. In addition, information about the mobile terminal's velocity relative to the base station may be used to improve performance of the communication system. The location information may be used to estimate a nominal PN offset, and a set of PN offset to use, for processing communication signals. The velocity information may be used to estimate a nominal frequency of the communication signals.
摘要翻译：使用关于移动终端相对于基站的位置的信息的方法和装置可以提高通信系统的性能。另外，可以使用关于移动终端相对于基站的速度的信息来改善通信系统的性能。可以使用位置信息来估计用于处理通信信号的标称PN偏移和要使用的一组PN偏移。速度信息可以用于估计通信信号的标称频率。

7. 发明授权

US08355685B2 Segmented CDMA searching 有权
公开(公告)号：US08355685B2
公开(公告)日：2013-01-15
申请号：US11746031
申请日：2007-05-08
申请人： Subramanya P. Rao , Da-Shan Shiu , Jeremy H. Lin , Jeong Geun Kim
发明人： Subramanya P. Rao , Da-Shan Shiu , Jeremy H. Lin , Jeong Geun Kim
IPC分类号： H04B1/18 , H04B1/16
CPC分类号： H04B1/7077 , H04B1/70753 , H04B2201/70707
摘要： Techniques for segmented CDMA searching are disclosed. In one aspect, a searcher comprises a plurality of storage elements selectable for performing a plurality of segmentable search tasks, each storage element operable for storage of and access to state information for one of the plurality of search tasks. In another aspect, a first search task is interrupted in progress, the state information for the first task is stored, a second search task is performed, and the first search task is continued using the stored state information. In yet another aspect, a search task is segmented into smaller search segments, sized to fit within contiguous available time in the searcher. Various other aspects of the invention are also presented. These aspects have the benefit of circuit area and search-time efficiency which translate into reduced costs, increased standby time, increased acquisition speed, higher quality signal transmission, increased data throughput, decreased power, and improved overall system capacity.

8. 发明授权

US07966032B2 Power control avoiding outer loop wind-up 有权
标题翻译：电源控制避免外圈卷绕
公开(公告)号：US07966032B2
公开(公告)日：2011-06-21
申请号：US11264950
申请日：2005-11-01
申请人： Richard Chi , Da-Shan Shiu , Nitin Kasturi , Parvathanathan Subrahmanya
发明人： Richard Chi , Da-Shan Shiu , Nitin Kasturi , Parvathanathan Subrahmanya
IPC分类号： H04Q7/20
CPC分类号： H04W52/228 , H04W52/12 , H04W52/20 , H04W52/221 , H04W52/24 , H04W52/241 , H04W52/248 , H04W52/36
摘要： Techniques for power control that avoids outer loop wind-up are disclosed. In one aspect, wind-up of a target power level is detected, and the target power level is modified in response. In another aspect, unwinding of the target power level is detected, after which the target power level is determined without considering wind-up. Various other aspects are also presented, including wind-up and unwinding detection procedures, and target power level modification procedures. These aspects have the benefit of reducing the time that transmit power exceeds that which is necessary, thus increasing system capacity and performance, and mitigating misallocation of system resources.
摘要翻译：公开了避免外圈卷绕的功率控制技术。在一个方面，检测目标功率电平的上升，并且响应地改变目标功率电平。在另一方面，检测目标功率电平的展开，之后在不考虑卷绕的情况下确定目标功率电平。还提出了各种其他方面，包括卷绕和展开检测程序以及目标功率级别修改程序。这些方面具有减少发射功率超过必要时间的优点，从而增加系统容量和性能，并减轻系统资源的分配不当。

9. 发明授权

US07734309B2 Power control avoiding outer loop wind-up 有权
标题翻译：电源控制避免外圈卷绕
公开(公告)号：US07734309B2
公开(公告)日：2010-06-08
申请号：US11750938
申请日：2007-05-18
申请人： Richard Chi , Da-Shan Shiu , Nitin Kasturi , Parvathanathan Subrahmanya
发明人： Richard Chi , Da-Shan Shiu , Nitin Kasturi , Parvathanathan Subrahmanya
IPC分类号： H04Q7/20
CPC分类号： H04W52/228 , H04W52/12 , H04W52/20 , H04W52/221 , H04W52/24 , H04W52/241 , H04W52/248 , H04W52/36
摘要： Techniques for power control that avoids outer loop wind-up are disclosed. In one aspect, wind-up of a target power level is detected, and the target power level is modified in response. In another aspect, unwinding of the target power level is detected, after which the target power level is determined without considering wind-up. Various other aspects are also presented, including wind-up and unwinding detection procedures, and target power level modification procedures. These aspects have the benefit of reducing the time that transmit power exceeds that which is necessary, thus increasing system capacity and performance, and mitigating misallocation of system resources.
摘要翻译：公开了避免外圈卷绕的功率控制技术。在一个方面，检测目标功率电平的上升，并且响应地改变目标功率电平。在另一方面，检测目标功率电平的展开，之后在不考虑卷绕的情况下确定目标功率电平。还提出了各种其他方面，包括卷绕和展开检测程序以及目标功率级别修改程序。这些方面具有减少发射功率超过必要时间的优点，从而增加系统容量和性能，并减轻系统资源的分配不当。

10. 发明申请

US20070298739A1 SEGMENTED CDMA SEARCHING 有权
标题翻译： SEGMENTED CDMA搜索
公开(公告)号：US20070298739A1
公开(公告)日：2007-12-27
申请号：US11746031
申请日：2007-05-08
申请人： Subramanya Rao , Da-Shan Shiu , Jeremy Lin , Jeong Kim
发明人： Subramanya Rao , Da-Shan Shiu , Jeremy Lin , Jeong Kim
IPC分类号： H04B1/18
CPC分类号： H04B1/7077 , H04B1/70753 , H04B2201/70707
摘要： Techniques for segmented CDMA searching are disclosed. In one aspect, a searcher comprises a plurality of storage elements selectable for performing a plurality of segmentable search tasks, each storage element operable for storage of and access to state information for one of the plurality of search tasks. In another aspect, a first search task is interrupted in progress, the state information for the first task is stored, a second search task is performed, and the first search task is continued using the stored state information. In yet another aspect, a search task is segmented into smaller search segments, sized to fit within contiguous available time in the searcher. Various other aspects of the invention are also presented. These aspects have the benefit of circuit area and search-time efficiency which translate into reduced costs, increased standby time, increased acquisition speed, higher quality signal transmission, increased data throughput, decreased power, and improved overall system capacity.
摘要翻译：公开了分段CDMA搜索的技术。在一个方面，搜索器包括可选择用于执行多个可分割搜索任务的多个存储元件，每个存储元件可操作用于存储和访问多个搜索任务之一的状态信息。在另一方面，第一搜索任务在进行中中断，存储第一任务的状态信息，执行第二搜索任务，并且使用所存储的状态信息继续第一搜索任务。在另一方面，搜索任务被分割成较小的搜索段，其大小适合于搜索者中的连续可用时间。还提出了本发明的各种其它方面。这些方面具有电路面积和搜索时间效率的优点，从而降低了成本，增加了待机时间，提高了采集速度，提高了信号传输质量，提高了数据吞吐量，降低了功耗，提高了整体系统容量。

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