公开(公告)号：US06373882B1

公开(公告)日：2002-04-16

申请号：US09187002

申请日：1998-11-06

申请人： Roozbeh Atarius ,  Torsten Carlsson ,  Håkan Eriksson ,  Kjell Gustafsson ,  Torgny Palenius ,  Christer Östberg

发明人： Roozbeh Atarius ,  Torsten Carlsson ,  Håkan Eriksson ,  Kjell Gustafsson ,  Torgny Palenius ,  Christer Östberg

IPC分类号： H04B1500

CPC分类号： H04B1/7115 ,  H04B2201/70707

摘要： The present invention provides a system and method for reducing the power consumed by a RAKE receiver. In exemplary embodiments of the present invention, an environment variation estimator is implemented in a CDMA mobile station. The environment variation estimator is connected to the searcher of the RAKE receiver and provides an estimate of the rate at which the mobile station's environment is changing. By providing an estimate of the rate of change of the mobile station's environment, the duty cycle of the searcher can be optimized, thereby reducing the overall power consumed by the receiver. By also providing the estimate to the RAKE fingers, channel tracking can be improved.

摘要翻译： 本发明提供了一种用于减少RAKE接收机消耗的功率的系统和方法。 在本发明的示例性实施例中，在CDMA移动台中实现环境变化估计器。 环境变化估计器连接到RAKE接收机的搜索者，并提供移动台环境正在改变的速率的估计。 通过提供移动台环境变化率的估计，可以优化搜索者的占空比，从而降低接收机消耗的总体功耗。 通过向RAKE手指提供估计，可以改善频道跟踪。

公开(公告)号：US6104767A

公开(公告)日：2000-08-15

申请号：US971666

申请日：1997-11-17

申请人： Roozbeh Atarius ,  Georg Frank

发明人： Roozbeh Atarius ,  Georg Frank

IPC分类号： H03J7/02 ,  H04B17/00 ,  H04L27/00 ,  H04L27/14 ,  H04L27/06

CPC分类号： H03J7/02 ,  H04L2027/0065

摘要： In a communication system including at least one transmitter and at least one receiver, a frequency offset between a carrier frequency of the transmitter and a local frequency reference of the receiver is estimated. A phase difference is computed between successively collected samples of a frequency synchronization signal transmitted by the transmitter and detected by the receiver. The phase difference is added to accumulated phase differences. Phase differences of successively collected samples are computed and added to accumulated phase differences until M accumulated phase differences have been added. The sum of the M phase differences is dumped, resulting in zero accumulated phase differences. Phase differences of successively collected samples are computed, the phase differences are added to accumulated phase differences, and the sum of M phase differences is dumped until N sums of M phase differences have been dumped. The N sums of the M phase differences are added to produce the estimated frequency offset.

摘要翻译： 在包括至少一个发射机和至少一个接收机的通信系统中，估计发射机的载波频率和接收机的本地频率参考之间的频率偏移。 在由发射机发射并由接收机检测的频率同步信号的连续收集的采样之间计算相位差。 相位差加到累加的相位差上。 计算连续收集的样本的相位差，并将其相加到累积相位差，直到添加了M个累积相位差。 M相差的总和被转储，导致零累积相位差。 计算连续收集的样本的相位差，将相位差加到累积相位差上，并将M相差的和倾倒，直到M个相位差的N个和已经被转储。 将M个相位差的N个和相加以产生估计的频率偏移。

公开(公告)号：US08995318B2

公开(公告)日：2015-03-31

申请号：US13076212

申请日：2011-03-30

申请人： Roozbeh Atarius ,  Peerapol Tinnakornsrisuphap ,  David A. Ott ,  Ramachandran Subramanian

发明人： Roozbeh Atarius ,  Peerapol Tinnakornsrisuphap ,  David A. Ott ,  Ramachandran Subramanian

IPC分类号： H04B7/00 ,  H04W60/00 ,  H04W8/18 ,  H04W84/04

CPC分类号： H04W60/00 ,  H04W8/183 ,  H04W84/045

摘要： A method of communication involves sending a request from a first network entity (e.g., a femto convergence server) to a second network entity (e.g., a home subscriber server) for user data relating to an access point, receiving a response to the request, wherein the response identifies at least one application server, and sending registration status information to the identified at least one application server.

摘要翻译： 一种通信方法涉及从第一网络实体（例如，毫微微融合服务器）向第二网络实体（例如，归属订户服务器）发送与接入点相关的用户数据的请求，接收对该请求的响应， 其中所述响应识别至少一个应用服务器，以及向所述所识别的至少一个应用服务器发送注册状态信息。

公开(公告)号：US08787362B2

公开(公告)日：2014-07-22

申请号：US12732806

申请日：2010-03-26

申请人： Roozbeh Atarius ,  Arungundram C. Mahendran ,  Haipeng Jin ,  Ramachandran Subramanian

发明人： Roozbeh Atarius ,  Arungundram C. Mahendran ,  Haipeng Jin ,  Ramachandran Subramanian

IPC分类号： H04L12/66 ,  H04L29/06 ,  H04W76/02

CPC分类号： H04L65/1069 ,  H04L65/1016 ,  H04L65/1096 ,  H04L69/40 ,  H04W76/18 ,  Y02D30/30

摘要： Fall back using mobile device assisted terminating access domain selection is provided. A network entity forwards an invitation to a session to a mobile device. Session has packet switched bearers for media. Mobile device replies with a rejection of the invitation and a request for network entity to hold the session. Rejection is based on mobile device determining circuit switched bearers should be utilized. Mobile device sends a circuit switched call and network entity correlates the circuit switched call with the session. A dialog is set up over circuit switched domain bearers and Internet Protocol Multimedia Subsystem bearers.

摘要翻译： 提供了使用移动设备辅助终接接入域选择的回退。 网络实体将会话转发到移动设备。 会话具有用于媒体的分组交换承载。 移动设备回复拒绝邀请和请求网络实体持有会话。 拒绝是基于移动设备确定的电路交换机应该被利用。 移动设备发送电路交换呼叫，并且网络实体将电路交换呼叫与会话相关联。 在电路交换域承载和互联网协议多媒体子系统承载上建立对话。

公开(公告)号：US08031645B2

公开(公告)日：2011-10-04

申请号：US11399833

申请日：2006-04-06

申请人： Roozbeh Atarius ,  Ramachandran Subramanian

发明人： Roozbeh Atarius ,  Ramachandran Subramanian

IPC分类号： H04B7/00

CPC分类号： H04L67/303 ,  H04L63/102 ,  H04L67/14 ,  H04W8/26 ,  H04W12/08 ,  H04W28/14 ,  H04W84/04 ,  H04W84/12 ,  H04W84/18 ,  H04W88/02

摘要： Techniques for archiving data exchanged between a terminal and a wireless communication network during a session are described. Session data may be archived at a network entity in real-time while the session is in progress or may be uploaded to the network entity for archival after the session has terminated. The network entity may archive all data exchanged during the session or only data of the terminal, depending on whether authorization is received from other terminals in the session. The network entity may assign an identifier for the session and may store the identifier and other attributes for the session. During or after the session, the network entity may receive from the terminal a request for all or a portion of the archived data and would then provide the requested data. The network entity may archive a single copy of the session data for all terminals in the session.

摘要翻译： 描述在会话期间归档在终端和无线通信网络之间交换的数据的技术。 会话数据可以在会话正在进行时实时存档在网络实体处，或者可以在会话终止之后被上传到网络实体进行归档。 网络实体可以归档在会话期间所交换的所有数据，或只归档终端的数据，这取决于是否从会话中的其他终端接收到授权。 网络实体可以为会话分配标识符，并且可以存储会话的标识符和其他属性。 在会话期间或之后，网络实体可以从终端接收对归档数据的全部或一部分的请求，然后提供所请求的数据。 网络实体可以存档会话中所有终端的会话数据的单个副本。

公开(公告)号：US07382821B2

公开(公告)日：2008-06-03

申请号：US11626728

申请日：2007-01-24

申请人： Roozbeh Atarius ,  Torsten J. Carlsson ,  Håkan B. Eriksson ,  Kjell B. Gustafsson ,  Torgny Palenius ,  Christer Östberg

发明人： Roozbeh Atarius ,  Torsten J. Carlsson ,  Håkan B. Eriksson ,  Kjell B. Gustafsson ,  Torgny Palenius ,  Christer Östberg

IPC分类号： H04B1/00

CPC分类号： H04B1/7115 ,  H04B1/7093

摘要： A searcher uses an input signal, and for example, a matched filter to generate a first set of candidate paths. A selector uses the input signal and the first set of candidate paths to generate a second set of paths. The second set of paths is used to configure the fingers of a RAKE receiver. According to one aspect of the invention, the first set of candidate paths contains M paths, and the second stage uses M correlators to generate a set of M correlation values. The second stage uses the M correlation values to select N paths that are used to configure the N fingers of the RAKE receiver. According to another aspect of the invention, the first set of candidate paths contains M paths, and the second stage uses a multiple of M correlators to track the M paths and generate a set of M estimates. The second stage uses the M estimates to select N paths that are used to configure the N fingers of the RAKE receiver. According to another aspect of the invention, the selector can generate new sets of N paths while the searcher is either active or inactive. The receiver can use a quality signal or a counter to notify the searcher and/or the selector to generate new sets of paths. The selector decreases the need to continuously run the matched filter. The receiver can re-configure the fingers without having to search for new paths. The receiver can also find paths that are uncorrelated and less susceptible to fading.

摘要翻译： 搜索者使用输入信号，例如，匹配滤波器来生成第一组候选路径。 选择器使用输入信号和第一组候选路径来生成第二组路径。 第二组路径用于配置RAKE接收机的手指。 根据本发明的一个方面，第一组候选路径包含M个路径，第二阶段使用M个相关器来生成一组M个相关值。 第二级使用M个相关值来选择用于配置RAKE接收机的N个手指的N个路径。 根据本发明的另一方面，第一组候选路径包含M个路径，并且第二阶段使用多个M个相关器来跟踪M个路径并生成一组M个估计。 第二阶段使用M个估计来选择用于配置RAKE接收机的N个手指的N个路径。 根据本发明的另一方面，当搜索者处于活动或不活动状态时，选择器可以生成新的N个路径集合。 接收机可以使用质量信号或计数器来通知搜索者和/或选择器来生成新的路径集合。 选择器减少了连续运行匹配滤波器的需要。 接收机可以重新配置手指，而无需搜索新的路径。 接收机还可以找到不相关的路径，并且不易受衰落影响。

公开(公告)号：US07065130B1

公开(公告)日：2006-06-20

申请号：US09678165

申请日：2000-10-02

申请人： Roozbeh Atarius ,  Håkan Eriksson ,  Torgny Palenius ,  Christer Östberg ,  Torsten Carlsson ,  Kjell Gustafsson

发明人： Roozbeh Atarius ,  Håkan Eriksson ,  Torgny Palenius ,  Christer Östberg ,  Torsten Carlsson ,  Kjell Gustafsson

IPC分类号： H04B15/00 ,  H04K1/00 ,  H04L27/30

CPC分类号： H04B1/70758 ,  H04B1/70757 ,  H04B1/712

摘要： A method and system enables matched filters of a CDMA system to be simplified using a two stage search. A course stage and a fine stage jointly produce the location(s) of received signal path-rays. In a first stage, an oversampled digital signal is decimated, and the decimated signal is applied to a matched filter to eventually produce an approximate location. In a second stage, the oversampled signal is shifted based on the determined approximate location and then correlated to a generated code, and a more-exact location is selected from the outputs of the correlations. Alternatively, a shifted version of the generated code is correlated to the oversampled signal, and the more-exact location is selected from the outputs of those correlations.

摘要翻译： 一种方法和系统使得能够使用两级搜索来简化CDMA系统的匹配滤波器。 课程阶段和精细阶段共同产生接收到的信号路径射线的位置。 在第一阶段，抽取过采样的数字信号，并将抽取的信号施加到匹配滤波器以最终产生近似位置。 在第二阶段，过采样信号基于所确定的近似位置移位，然后与生成的代码相关，并且从相关的输出中选择更精确的位置。 或者，生成的代码的移位版本与过采样信号相关，并且从这些相关的输出中选择更精确的位置。

公开(公告)号：US06920324B2

公开(公告)日：2005-07-19

申请号：US09829689

申请日：2001-04-10

申请人： Roozbeh Atarius ,  Murali Narasimha ,  Wail Refai ,  Stuart B. Sanders

发明人： Roozbeh Atarius ,  Murali Narasimha ,  Wail Refai ,  Stuart B. Sanders

IPC分类号： H04W36/18 ,  H04Q7/20

CPC分类号： H04W36/18

摘要： Methods, receivers, transmitters, and systems are provided for performing a soft hand-over of a mobile terminal between base station transceivers that communicate using different communication channels. A mobile terminal may be configured to receive and demodulate signals on a plurality of different communication channels concurrently and to modulate and transmit signals on a plurality of different communication channels concurrently. This allows, for example, multiple communication connections to be concurrently established between the mobile terminal and a plurality of different base station transceivers that use the different communication channels to communicate. The mobile terminal and cooperating base station transceivers may perform a soft hand-over by allowing the mobile terminal to establish communication connections with one or more new base station transceivers to decide which base station transceiver should be given control before terminating any pre-existing communication connection with a current base station transceiver.

摘要翻译： 提供了方法，接收机，发射机和系统，用于在使用不同通信信道进行通信的基站收发器之间执行移动终端的软切换。 移动终端可以被配置为同时在多个不同的通信信道上接收和解调信号，并且同时在多个不同的通信信道上调制和发送信号。 这允许例如在移动终端与使用不同通信信道进行通信的多个不同基站收发机之间同时建立多个通信连接。 移动终端和协作基站收发机可以通过允许移动终端与一个或多个新的基站收发机建立通信连接来执行软切换，以在终止任何预先存在的通信连接之前决定哪个基站收发机应该被控制 与当前的基站收发器。

公开(公告)号：US06768727B1

公开(公告)日：2004-07-27

申请号：US09711219

申请日：2000-11-09

申请人： Essam Sourour ,  Roozbeh Atarius ,  Ali Khayrallah

发明人： Essam Sourour ,  Roozbeh Atarius ,  Ali Khayrallah

IPC分类号： H04Q7216

CPC分类号： H04W52/42 ,  H04B7/0619 ,  H04W52/143 ,  H04W52/20 ,  H04W52/24 ,  H04W52/58

摘要： A method of forward link power control in a CDMA mobile communication system is adapted for diversity transmission. First and second diversity signals are transmitted from a base station to a mobile terminal. The mobile terminal derives first and second channel quality estimates associated with the first and second diversity signals respectively. The mobile terminal uses the channel quality estimates to derive first and second power control codes which it transmits to said base station. The base station adjusts the transmit power of first and second antennas associated with the base station based on the first and second power control codes, respectively.

摘要翻译： CDMA移动通信系统中的前向链路功率控制方法适用于分集传输。 第一和第二分集信号从基站发送到移动终端。 移动终端分别导出与第一和第二分集信号相关联的第一和第二信道质量估计。 移动终端使用信道质量估计来导出其向所述基站发送的第一和第二功率控制码。 基站分别基于第一和第二功率控制码来调整与基站相关联的第一和第二天线的发射功率。

公开(公告)号：US06356608B1

公开(公告)日：2002-03-12

申请号：US09106227

申请日：1998-06-29

申请人： Roozbeh Atarius

发明人： Roozbeh Atarius

IPC分类号： H04L704

CPC分类号： H04W56/0035 ,  H04B7/2675 ,  H04L7/042 ,  H04L27/2332 ,  H04L2027/0065

摘要： A method, apparatus, and system determine a location of a frequency synchronization signal in a frame of data transmitted from a transmitter and received by a receiver in a communication system including at least one transmitter and at least one receiver. A peak value representing a detected frequency synchronization signal transmitted from the transmitter to the receiver is calculated. A frequency offset between a carrier frequency of the transmitter and a frequency reference of the receiver is estimated, along with a quality factor for the estimated frequency offset. A determination is made whether the peak value is greater than or equal to a peak threshold and whether the quality factor is less than or equal to a quality threshold. When both of the predetermined threshold conditions are met, the peak value, frequency offset, and quality factor are stored. When either of the threshold conditions is not met, the location of the frequency synchronization signal corresponds to the location of a stored maximum peak value and a stored minimum quality factor.

摘要翻译： 方法，装置和系统确定频率同步信号在从发射机发送的数据帧中的接收机在包括至少一个发射机和至少一个接收机的通信系统中接收的数据的位置。 计算表示从发送器发送到接收器的检测到的频率同步信号的峰值。 估计发射机的载波频率和接收机的频率参考之间的频率偏移以及估计频率偏移的品质因数。 确定峰值是否大于或等于峰值阈值以及质量因子是否小于或等于质量阈值。 当满足预定阈值条件两者时，存储峰值，频率偏移和品质因数。 当不满足任一阈值条件时，频率同步信号的位置对应于所存储的最大峰值和存储的最小质量因子的位置。