公开(公告)号：US09603184B2

公开(公告)日：2017-03-21

申请号：US13602067

申请日：2012-08-31

Applicant: Tarik Tabet ,  Paul V. Flynn ,  Sreevalsan Vallath ,  Kee-Bong Song ,  Syed A. Mujtaba ,  Li Su

Inventor： Tarik Tabet ,  Paul V. Flynn ,  Sreevalsan Vallath ,  Kee-Bong Song ,  Syed A. Mujtaba ,  Li Su

IPC: H04W76/04 ,  H04W52/02

CPC classification number: H04W76/28 ,  H04W52/0216 ,  H04W76/27 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/24

Abstract: A method is disclosed for coordinating a user equipment's communication with a network during tune back with C-DRX (connected mode discontinuous receive). When a user equipment tunes back to a network after a tune away or a signal fade, a scheduling request is sent to the network to indicate the tune back as quickly as possible. The user equipment waits for a downlink transmission from the network. When the user equipment does not receive the downlink transmission, the method determines if the connection between the user equipment and the network has been released. The sending of the first scheduling request and any additional scheduling requests is coordinated with the C-DRX configuration so as to maximize the battery savings of C-DRX and minimize the latency of the tune back process in case the user equipment has uplink data to send.

公开(公告)号：US09049745B2

公开(公告)日：2015-06-02

申请号：US13347641

申请日：2012-01-10

Applicant: Syed A. Mujtaba ,  Jianxiong Shi ,  Isabel G. Mahe

Inventor： Syed A. Mujtaba ,  Jianxiong Shi ,  Isabel G. Mahe

IPC: H04W88/06 ,  H04W36/14 ,  H04W8/18

CPC classification number: H04W88/06 ,  H04W8/18 ,  H04W36/14

Abstract: Electronic devices may have multiple wireless integrated circuits such as first and second baseband processor integrated circuits. The first baseband processors may be used exclusively for handling packet switched traffic, whereas the second baseband processor may be used exclusively for handling circuit switched traffic. Radio-frequency front end circuitry may be used to couple multiple antennas to the baseband processors and associated radio-frequency transceivers. The first baseband processor may be coupled to a first universal integrated circuit card (UICC) storing a first subscriber profile, whereas the second baseband processor may be coupled to a second UICC storing a second subscriber profile. The first baseband processor may be used to support any desired circuit switched radio access technology, whereas the second baseband processor may be used to support any desired packet switched radio access technology.

Abstract translation: 电子设备可以具有多个无线集成电路，例如第一和第二基带处理器集成电路。 第一基带处理器可以专门用于处理分组交换业务，而第二基带处理器可以专门用于处理电路交换业务。 射频前端电路可用于将多个天线耦合到基带处理器和相关的射频收发器。 第一基带处理器可以耦合到存储第一用户简档的第一通用集成电路卡（UICC），而第二基带处理器可以耦合到存储第二用户简档的第二UICC。 第一基带处理器可以用于支持任何期望的电路交换无线电接入技术，而第二基带处理器可以用于支持任何期望的分组交换无线电接入技术。

公开(公告)号：US08958760B2

公开(公告)日：2015-02-17

申请号：US13346419

申请日：2012-01-09

Applicant: Syed A. Mujtaba ,  Weiping Dou

Inventor： Syed A. Mujtaba ,  Weiping Dou

IPC: H04B1/04 ,  H04B7/06

CPC classification number: H04B1/3838 ,  H04B1/04 ,  H04B7/0608 ,  H04B7/0689

Abstract: Electronic devices may have multiple wireless integrated circuits such as a pair of baseband processor integrated circuits and may have multiple antennas such as a pair of antennas. An electronic device may be operated in different modes depending on the operating environment of the electronic device. When both antennas are unblocked, both baseband processors and both antennas may be used in transmitting signals. When one antenna is not available, the device may be operated in a mode in which the available antenna is used and both baseband processors are used or in a mode in which the available antenna is used and only one of the baseband processors is used. Operating mode decisions may be made so as to minimize the potential for intermodulation distortion and absorbed radiation.

Abstract translation: 电子设备可以具有多个无线集成电路，例如一对基带处理器集成电路，并且可以具有多个天线，例如一对天线。 电子设备可以根据电子设备的操作环境以不同的模式操作。 当两个天线解除阻塞时，基带处理器和两个天线都可以用于发送信号。 当一个天线不可用时，设备可以在其中使用可用天线并且使用两个基带处理器的模式中或者在使用可用天线的模式中操作，并且仅使用一个基带处理器。 可以进行操作模式决定，以便使互调失真和吸收辐射的可能性最小化。

公开(公告)号：US08498656B2

公开(公告)日：2013-07-30

申请号：US13098947

申请日：2011-05-02

Applicant: Syed A. Mujtaba ,  Kee-Bong Song ,  Youngjae Kim

Inventor： Syed A. Mujtaba ,  Kee-Bong Song ,  Youngjae Kim

IPC: H04W68/00

CPC classification number: H04B7/0814 ,  H04W52/0245 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/23 ,  Y02D70/26 ,  Y02D70/444

Abstract: Electronic devices may be provided that contain wireless communication circuitry. The wireless communication circuitry may include radio-frequency transceiver circuitry coupled to multiple antennas. An electronic device may alternate between a sleep mode and a wake mode. During wake mode, the electronic device may monitor a paging channel in a wireless network for incoming paging signals. The device may use a selected one of the multiple antennas in monitoring the paging channel. If received signal quality is satisfactory, the device may maintain use of the selected one of the multiple antennas for subsequent wake period monitoring of the paging channel. If received signal quality falls below a threshold or is otherwise indicated to not be satisfactory, the device may switch to use of a different one of the multiple antennas in monitoring the paging channel. Other criteria may also be used in controlling the switching between antennas for paging channel monitoring.

Abstract translation: 可以提供包含无线通信电路的电子设备。 无线通信电路可以包括耦合到多个天线的射频收发器电路。 电子设备可以在睡眠模式和唤醒模式之间交替。 在唤醒模式期间，电子设备可以监视无线网络中的呼入寻呼信号的寻呼信道。 该设备可以使用多个天线中所选择的一个来监视寻呼信道。 如果接收到的信号质量令人满意，则设备可以保持对多个天线中所选择的一个天线的使用以用于寻呼信道的随后的唤醒周期监视。 如果接收到的信号质量低于阈值或被指示为不令人满意，则在监视寻呼信道时，设备可以切换到使用多个天线中的不同的天线。 其他标准也可以用于控制用于寻呼信道监测的天线之间的切换。

公开(公告)号：US20120264473A1

公开(公告)日：2012-10-18

申请号：US13195732

申请日：2011-08-01

Applicant: Syed A. Mujtaba ,  Wen Zhao ,  Xiaowen Wang ,  Vinay Majjigi ,  Isabel G. Mahe

Inventor： Syed A. Mujtaba ,  Wen Zhao ,  Xiaowen Wang ,  Vinay Majjigi ,  Isabel G. Mahe

IPC: H04W88/06 ,  H04W24/00

CPC classification number: H04W24/08 ,  H04B1/26 ,  H04B7/0602 ,  H04B7/0802 ,  H04W24/00 ,  H04W68/00 ,  H04W88/06 ,  H04W88/10

Abstract: Electronic devices may be provided that contain wireless communication circuitry. The wireless communication circuitry may include radio-frequency transceiver circuitry coupled to antennas by switching circuitry. Multiple radio access technologies may be supported. A device may include first and second antennas. Control circuitry can configure the transceiver circuitry and switching circuitry to support operation of the device in active and idle modes for each radio access technology. In some configurations, both antennas may be used to support operations associated with one of the radio access technologies. In other configurations, the first antenna may be used to support operations with a first of the radio access technologies while the second antenna is used to support operations with a second of the radio access technologies.

Abstract translation: 可以提供包含无线通信电路的电子设备。 无线通信电路可以包括通过开关电路耦合到天线的射频收发器电路。 可以支持多种无线电接入技术。 设备可以包括第一和第二天线。 控制电路可以配置收发器电路和开关电路，以支持每个无线电接入技术在主动和空闲模式下的设备操作。 在一些配置中，两个天线可以用于支持与无线电接入技术之一相关联的操作。 在其他配置中，第一天线可以用于支持具有第一无线电接入技术的操作，而第二天线用于支持具有第二无线电接入技术的操作。

公开(公告)号：US20110116565A1

公开(公告)日：2011-05-19

申请号：US13012964

申请日：2011-01-25

Applicant: Syed A. Mujtaba

Inventor： Syed A. Mujtaba

IPC: H04L27/28

CPC classification number: H04B7/0684 ,  H04L27/261

Abstract: Methods and apparatus are provided for communicating data in a multiple antenna communication system having N transmit antennas. According to one aspect of the invention, a header format includes a legacy preamble having at least one legacy long training field and an extended portion having at least N additional long training fields on each of the N transmit antennas, wherein one or more of the at least N additional long training fields are comprised of only one Orthogonal Frequency Division Multiplexing (OFDM) symbol. The extended portion optionally comprises one or more repeated OFDM symbols for frequency offset estimation. In one implementation, the extended portion comprises a first high throughput long training field comprised of two repeated OFDM symbols and N−1 high throughput long training fields comprised of only one OFDM symbol. In another variation, the extended portion comprises N high throughput long training fields comprised of only one OFDM symbol.

Abstract translation: 提供了用于在具有N个发射天线的多天线通信系统中传送数据的方法和装置。 根据本发明的一个方面，报头格式包括具有至少一个传统长训练场的传统前导码和在N个发射天线中的每一个上具有至少N个附加的长训练场的扩展部分，其中一个或多个 最少N个附加的长训练场仅由一个正交频分复用（OFDM）符号组成。 扩展部分可选地包括用于频率偏移估计的一个或多个重复的OFDM符号。 在一个实现中，扩展部分包括由两个重复OFDM符号和仅包括一个OFDM符号的N-1个高吞吐量长训练字段组成的第一高吞吐量长训练场。 在另一变型中，扩展部分包括仅由一个OFDM符号组成的N个高吞吐量长的训练场。

公开(公告)号：US07742770B2

公开(公告)日：2010-06-22

申请号：US11388294

申请日：2006-03-24

Applicant: Edward E. Campbell ,  Syed A. Mujtaba

Inventor： Edward E. Campbell ,  Syed A. Mujtaba

IPC: H04W72/00

CPC classification number: H04L25/022 ,  H04B7/04 ,  H04B7/0602 ,  H04B7/0615 ,  H04B7/0684 ,  H04L25/0224

Abstract: Methods and apparatus are provided for per-antenna training in a multiple antenna communication system having a plurality of transmit antenna branches. A long training sequence is transmitted on each of the transmit antenna branches such that only one of the transmit antenna branches is active at a given time. The active transmit antenna branch transmits the long training sequence with an increased power level relative to a transmission of a payload by the active transmit antenna branch. The increased power level for the active transmit antenna branch compensates for the inactive transmit antenna branches being silent during the given time. Thus, the active transmit antenna branch provides approximately the same antenna power while transmitting the long training sequence as a total power of the plurality of transmit antenna branches during a transmission of the payload. The increased power level can be provided, for example, by a digital-to-analog converter associated with the active transmit antenna branch.

Abstract translation: 在具有多个发射天线分支的多天线通信系统中提供用于每天线训练的方法和装置。 在每个发射天线分支上发送长训练序列，使得在给定时间只有一个发射天线分支是活动的。 有源发射天线分支相对于有源发射天线分支的有效载荷的传输具有增加的功率电平来传输长训练序列。 有源发射天线支路的增加的功率电平补偿在给定时间内无效的发射天线分支是无声的。 因此，有源发射天线分支提供大致相同的天线功率，同时在有效载荷的传输期间发送长训练序列作为多个发射天线分支的总功率。 增加的功率电平可以例如由与有源发射天线分支相关联的数模转换器提供。

公开(公告)号：US07742389B2

公开(公告)日：2010-06-22

申请号：US11507390

申请日：2006-08-21

Applicant: Syed A Mujtaba

Inventor： Syed A Mujtaba

IPC: H04J11/00 ,  H04W4/00 ,  H04B7/02

CPC classification number: H04J13/0048 ,  H04B7/0669

Abstract: Methods and apparatus are provided for improved short preamble formats in a multiple antenna communication system having N antennas. A short preamble format having a legacy portion and a high throughput portion is transmitted (or received) on each of the N transmit antennas, wherein the legacy portion comprises a legacy long training field and the high throughput portion comprises N−1 high throughput long training fields. The legacy long training field and the N−1 high throughput long training fields can be transmitted in N time slots using an N×N orthogonal matrix, such as a Walsh matrix or a Fourier matrix. The N time slots can optionally comprise a single symbol. Backwards compatibility is optionally maintained by including a legacy short training field and a legacy signal field in the legacy portion of the short preamble.

Abstract translation: 在具有N个天线的多天线通信系统中提供了用于改进的短前导码格式的方法和装置。 在N个发射天线中的每一个上发送（或接收）具有遗留部分和高吞吐量部分的短前导码格式，其中遗留部分包括传统长训练场，高吞吐量部分包括N-1个高吞吐量长训练 领域。 传统的长训练场和N-1个高吞吐量的长训练场可以使用诸如沃尔什矩阵或傅立叶矩阵的N×N正交矩阵在N个时隙中传送。 N个时隙可以可选地包括单个符号。 可选地通过在短前导码的遗留部分中包括传统短训练场和遗留信号字段来保持向后兼容性。

公开(公告)号：US08848568B2

公开(公告)日：2014-09-30

申请号：US13567136

申请日：2012-08-06

Applicant: Syed A. Mujtaba ,  Kee-Bong Song ,  Yuchul Kim ,  Xiaowen Wang ,  Tarik Tabet ,  Youngjae Kim

Inventor： Syed A. Mujtaba ,  Kee-Bong Song ,  Yuchul Kim ,  Xiaowen Wang ,  Tarik Tabet ,  Youngjae Kim

IPC: H04W24/00

CPC classification number: H04W28/048 ,  H04L1/0045 ,  H04L1/0047 ,  H04L1/0053 ,  H04W28/04 ,  H04W52/143 ,  H04W52/241

Abstract: A user device receives packets from a base station. The user device may invoke decoding while the packet is still being received, based on the incomplete contents of a given packet. This “partial packet decoding” relies on the fact that the underlying information in the packet is encoded with redundancy (code rate less than one). If link quality is poor, the partial packet decoding is likely to be unsuccessful, i.e., to fail in its attempt to recover the underlying information. To avoid waste of power, the user device may be configured to apply one or more tests of link quality prior to invoking the partial packet decoding on a current packet.

Abstract translation: 用户设备从基站接收分组。 基于给定分组的不完整内容，用户设备可以在分组仍在接收时调用解码。 这种“部分分组解码”依赖于以冗余（代码率小于1）对分组中的底层信息进行编码的事实。 如果链路质量差，则部分分组解码可能不成功，即在尝试恢复基础信息时失败。 为了避免浪费电力，用户设备可以被配置为在对当前分组调用部分分组解码之前应用一个或多个链路质量测试。

公开(公告)号：US08737280B2

公开(公告)日：2014-05-27

申请号：US13231804

申请日：2011-09-13

Applicant: Syed A. Mujtaba ,  Kee-Bong Song ,  Xiaowen Wang ,  Young Jae Kim ,  Vinay R. Majjigi ,  Johnson O. Sebeni ,  Romain Trilling ,  Tahir Shamim ,  Karthik Anantharaman

Inventor： Syed A. Mujtaba ,  Kee-Bong Song ,  Xiaowen Wang ,  Young Jae Kim ,  Vinay R. Majjigi ,  Johnson O. Sebeni ,  Romain Trilling ,  Tahir Shamim ,  Karthik Anantharaman

IPC: G08C17/00 ,  H04B1/16

CPC classification number: H04B7/082 ,  H04B7/0817 ,  H04B7/0871 ,  H04L43/0823

Abstract: A mobile wireless device adapts receive diversity during discontinuous reception based on downlink signal quality, page indicators and page messages. When the downlink signal quality exceeds a pre-determined threshold, the mobile wireless device decodes a page indicator channel through an initial antenna, and otherwise, decodes a paging channel through the initial antenna without decoding the page indicator channel. The mobile wireless device switches to decoding the paging channel through an alternate antenna when a page indicator decodes as an erasure. When a paging message received through a single antenna decodes with an incorrect error checking code, the mobile wireless devices enables receive diversity through multiple antennas for subsequent decoding. The mobile wireless device switches between single antenna reception and multiple antenna reception based on tracking multiple consecutive error checking code failures and successes.

Abstract translation: 移动无线设备基于下行链路信号质量，页面指示符和寻呼消息来适应不连续接收期间的接收分集。 当下行链路信号质量超过预定阈值时，移动无线设备通过初始天线解码页面指示符信道，否则，通过初始天线对寻呼信道进行解码，而不对页面指示符信道进行解码。 当页面指示符被解码为擦除时，移动无线设备切换到通过替代天线解码寻呼信道。 当通过单个天线接收的寻呼消息用不正确的错误校验码进行解码时，移动无线设备能够通过多个天线进行接收分集以进行后续解码。 基于跟踪多个连续的错误检查代码故障和成功，移动无线设备在单天线接收和多天线接收之间切换。