专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08792458B2 System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system 有权
标题翻译：用于通过CDMA无线通信系统的反向链路维持无线信道的系统和方法
公开(公告)号：US08792458B2
公开(公告)日：2014-07-29
申请号：US13423859
申请日：2012-03-19
申请人： James A. Proctor, Jr.
发明人： James A. Proctor, Jr.
IPC分类号： H04B7/216
CPC分类号： H04B7/2628 , H04B1/7075 , H04B1/70754 , H04B2001/70706 , H04B2201/70703 , H04B2201/70709 , H04B2201/70715 , H04J13/0022 , H04J13/004 , H04J13/16 , H04J13/18 , H04L1/0007 , H04L1/165 , H04L1/1809 , H04L7/06 , H04L25/14 , H04L27/2601 , H04Q11/0428 , H04Q2213/13098 , H04Q2213/13202 , H04Q2213/13204 , H04Q2213/13209 , H04Q2213/13216 , H04Q2213/1327 , H04Q2213/13298 , H04Q2213/13332 , H04Q2213/1336 , H04Q2213/13389 , H04W24/00 , H04W28/20 , H04W28/22 , H04W56/00 , H04W56/0045 , H04W56/0075 , H04W72/0413 , H04W72/044 , H04W72/0446 , H04W72/0453 , H04W72/0466 , H04W74/00 , H04W74/04 , H04W76/28 , H04W84/14
摘要： A subscriber access unit includes a transceiver for providing wireless communication of digital signals. The digital signals are communicated to a base station using at least one radio frequency (RF) channel via Code Division Multiple Access (CDMA) modulated radio signals defined by orthogonal codes. Orthogonal subchannels are made available by the base station within each CDMA RF channel. A bandwidth manager is connected to the transceiver, and when the transceiver is actively sending data, at least one orthogonal subchannel is allocated by the base station on an as-needed basis. The number of orthogonal subchannels being allocated changes during a given session. The transceiver, when powered on but not actively sending data, provides an idling mode connection on a reverse link. The idling mode connection is based on an orthogonal subchannel shared with at least one other subscriber access unit, but utilizes different time slots of the shared orthogonal subchannel.
摘要翻译：用户接入单元包括用于提供数字信号的无线通信的收发器。使用由正交码定义的码分多址（CDMA）调制无线电信号，使用至少一个射频（RF）信道将数字信号传送到基站。正交子信道由每个CDMA RF信道内的基站提供。带宽管理器连接到收发器，并且当收发器正在主动发送数据时，基站根据需要分配至少一个正交子信道。被分配的正交子信道的数量在给定会话期间改变。收发器在上电但不主动发送数据时，在反向链路上提供空闲模式连接。空闲模式连接基于与至少一个其他用户接入单元共享的正交子信道，但是利用共享正交子信道的不同时隙。

2. 发明授权

US08787989B2 Efficient sleep mode operation for OFDMA systems 有权
标题翻译： OFDMA系统的高效休眠模式操作
公开(公告)号：US08787989B2
公开(公告)日：2014-07-22
申请号：US12032467
申请日：2008-02-15
申请人： Ravi Palanki , Jeremy H. Lin , Hemanth Sampath
发明人： Ravi Palanki , Jeremy H. Lin , Hemanth Sampath
IPC分类号： H04B1/38
CPC分类号： H04L27/2655 , H04B2201/70709 , H04L27/2649 , H04W52/0235 , Y02D70/00
摘要： A communications system and method for a wireless mobile device is provided. The method includes performing sleep mode operations in a device and performing wake-up operations with one or more base stations in view of the sleep mode operations in the device. The method also includes demodulating a communications channel for the device during sleep mode operations in the device and prior to synchronizing with the base stations.
摘要翻译：提供了一种用于无线移动设备的通信系统和方法。该方法包括在设备中执行休眠模式操作并且考虑到设备中的睡眠模式操作来执行与一个或多个基站的唤醒操作。该方法还包括在设备中的睡眠模式操作期间以及在与基站同步之前解调设备的通信信道。

3. 发明授权

US08320353B2 Method and system for estimating adaptive combined channel in CDMA system based on time division duplex system 失效
标题翻译：基于时分双工系统估计CDMA系统中自适应组合信道的方法和系统
公开(公告)号：US08320353B2
公开(公告)日：2012-11-27
申请号：US12665885
申请日：2008-06-19
申请人： Dong-Hahk Lee , Ra-Mi Lee , Seong-Soo Park , Sang-Shin Lee , Jae-Hwang Yu , Jong-Tae Ihm , Duk-Kyung Kim
发明人： Dong-Hahk Lee , Ra-Mi Lee , Seong-Soo Park , Sang-Shin Lee , Jae-Hwang Yu , Jong-Tae Ihm , Duk-Kyung Kim
IPC分类号： H04J1/00 , H04J3/17
CPC分类号： H04B1/7105 , H04B2201/70709
摘要： Disclosed is a method and system for estimating an adaptive joint channel in a CDMA system based on TDD. The method includes the steps of a) receiving activity information of a mobile terminal; b) parsing the activity information, and transmitting a midamble sequence to the mobile terminal when a result of the parsing shows that the mobile terminal is in an ON state; c) conducting adaptive joint channel estimation by using the midamble sequence in the mobile terminal; and d) conducting adaptive joint detection by using a channel impulse response of the mobile terminal, obtained as a result of conducting the adaptive joint channel estimation. The method and system decreases the complexity in channel estimation and additionally increases the accuracy of channel estimation by reducing transmission power consumption and eliminating unnecessary interference.
摘要翻译：公开了一种基于TDD来估计CDMA系统中的自适应联合信道的方法和系统。该方法包括以下步骤：a）接收移动终端的活动信息; b）解析活动信息，并且当解析结果表明移动终端处于ON状态时，向移动终端发送midamble序列; c）通过使用移动终端中的中间码序列来进行自适应联合信道估计; 以及d）通过使用作为进行自适应联合信道估计的结果获得的移动终端的信道脉冲响应来进行自适应联合检测。该方法和系统降低了信道估计的复杂度，并通过降低传输功耗并消除了不必要的干扰，增加了信道估计的准确性。

4. 发明授权

US08223820B2 Method and apparatus for symbol synchronization for an 802.15.4 radio platform 有权
标题翻译：用于802.15.4无线电平台的符号同步的方法和装置
公开(公告)号：US08223820B2
公开(公告)日：2012-07-17
申请号：US12060256
申请日：2008-03-31
申请人： Alexandre Rouxel
发明人： Alexandre Rouxel
IPC分类号： H04B1/69 , H04B7/216 , H04L27/06
CPC分类号： H04J13/00 , H04B1/707 , H04B2201/70709 , H04L27/2278
摘要： A technique for receiving a data stream including a spreading sequence packet of information containing a data payload and, in addition to the data payload, packet overhead including at least periodic information and at least one unique section of known coded information that defines a unique position within the packet, includes performing a plurality of processing steps to detect the position of the unique section within the packet of information. The steps include detecting the periodicity of the periodic information in a first processing step; in a second processing step after periodicity in the received data stream has been determined, estimating the position of the unique section within the packet of information; and in a third processing step, correlating the information in the packet of information about the estimated position with the known coded information.
摘要翻译：一种用于接收数据流的技术，包括包含数据有效载荷的信息的扩展序列分组，并且除了数据有效载荷之外，包括至少周期性信息的分组开销和至少一个已知编码信息的唯一部分，该唯一部分定义了在分组包括执行多个处理步骤以检测信息分组内的唯一部分的位置。这些步骤包括在第一处理步骤中检测周期性信息的周期; 在接收到的数据流的周期性已被确定之后的第二处理步骤中，估计信息包内的唯一部分的位置; 并且在第三处理步骤中，将关于估计位置的信息分组中的信息与已知编码信息相关联。

5. 发明授权

US08139546B2 System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system 有权
标题翻译：用于通过CDMA无线通信系统的反向链路维持无线信道的系统和方法
公开(公告)号：US08139546B2
公开(公告)日：2012-03-20
申请号：US12768445
申请日：2010-04-27
申请人： James A. Proctor, Jr.
发明人： James A. Proctor, Jr.
IPC分类号： H04B7/216
CPC分类号： H04B7/2628 , H04B1/7075 , H04B1/70754 , H04B2001/70706 , H04B2201/70703 , H04B2201/70709 , H04B2201/70715 , H04J13/0022 , H04J13/004 , H04J13/16 , H04J13/18 , H04L1/0007 , H04L1/165 , H04L1/1809 , H04L7/06 , H04L25/14 , H04L27/2601 , H04Q11/0428 , H04Q2213/13098 , H04Q2213/13202 , H04Q2213/13204 , H04Q2213/13209 , H04Q2213/13216 , H04Q2213/1327 , H04Q2213/13298 , H04Q2213/13332 , H04Q2213/1336 , H04Q2213/13389 , H04W24/00 , H04W28/20 , H04W28/22 , H04W56/00 , H04W56/0045 , H04W56/0075 , H04W72/0413 , H04W72/044 , H04W72/0446 , H04W72/0453 , H04W72/0466 , H04W74/00 , H04W74/04 , H04W76/28 , H04W84/14
摘要： A subscriber access unit includes a transceiver for providing wireless communication of digital signals. The digital signals are communicated to a base station using at least one radio frequency (RF) channel via Code Division Multiple Access (CDMA) modulated radio signals defined by orthogonal codes. Orthogonal subchannels are made available by the base station within each CDMA RF channel. A bandwidth manager is connected to the transceiver, and when the transceiver is actively sending data, at least one orthogonal subchannel is allocated by the base station on an as-needed basis. The number of orthogonal subchannels being allocated changes during a given session. The transceiver, when powered on but not actively sending data, provides an idling mode connection on a reverse link. The idling mode connection is based on an orthogonal subchannel shared with at least one other subscriber access unit, but utilizes different time slots of the shared orthogonal subchannel.
摘要翻译：用户接入单元包括用于提供数字信号的无线通信的收发器。使用由正交码定义的码分多址（CDMA）调制无线电信号，使用至少一个射频（RF）信道将数字信号传送到基站。正交子信道由每个CDMA RF信道内的基站提供。带宽管理器连接到收发器，并且当收发器正在主动发送数据时，基站根据需要分配至少一个正交子信道。被分配的正交子信道的数量在给定会话期间改变。收发器在上电但不主动发送数据时，在反向链路上提供空闲模式连接。空闲模式连接基于与至少一个其他用户接入单元共享的正交子信道，但是利用共享正交子信道的不同时隙。

6. 发明授权

US08050313B2 Single chip low power fully integrated 802.15.4 radio platform 有权
标题翻译：单芯片低功耗全集成802.15.4无线电平台
公开(公告)号：US08050313B2
公开(公告)日：2011-11-01
申请号：US11968113
申请日：2007-12-31
申请人： Nicolas Constantinidis , Guillaume Crinon , Alexandre Rouxel , Alan Westwick , Gary Franzosa
发明人： Nicolas Constantinidis , Guillaume Crinon , Alexandre Rouxel , Alan Westwick , Gary Franzosa
IPC分类号： H04B1/38 , H04B1/16
CPC分类号： H04B1/707 , H04B1/69 , H04B2201/70709
摘要： A single chip radio platform is disclosed for communicating with an RF channel. An RF front end is provided having a receive/transmit capability to receive an RF carrier modulated with digital data and convert the data to analog baseband data, and modulate an RF carrier with baseband data. A digital signal processor (DSP) engine is provided for interfacing with the RF front end to form in conjunction therewith the PHY layer, and interfacing with the MAC layer to demodulate the baseband data and in the transmit mode to generate the baseband data for modulation and transmission by the RF front end. A microcontroller unit (MCU) is provided for performing the functionality of the MAC, network and application layers and interfacing with the DSP. Clock circuitry is provided including a stable reference clock for generating a first fixed clock for providing MCU clocks for the operation of the MCU, and for providing a reference for a local oscillator at substantially the channel frequency for use by the RF front end and a DSP clock for use by the DSP, both the MCU clocks, the local oscillator and the DSP clock having the stability of the first fixed clock. Periodic power management circuitry is provided for controlling the operation of the radio platform to operate in a sleep.
摘要翻译：公开了用于与RF信道通信的单芯片无线电平台。提供RF前端，其具有接收/发射能力，以接收利用数字数据调制的RF载波，并将数据转换为模拟基带数据，并用基带数据调制RF载波。提供数字信号处理器（DSP）引擎，用于与RF前端接口以与其结合形成PHY层，并与MAC层接口以解调基带数据，并在发送模式下生成用于调制的基带数据，由射频前端传输。提供了一个微控制器单元（MCU），用于执行MAC，网络和应用层的功能，并与DSP接口。提供时钟电路，包括用于产生用于为MCU的操作提供MCU时钟的第一固定时钟的稳定参考时钟，以及为基本上由RF前端和DSP使用的信道频率的本地振荡器提供参考时钟由DSP使用，MCU时钟，本地振荡器和DSP时钟均具有第一个固定时钟的稳定性。提供了周期性电源管理电路，用于控制无线电平台在睡眠中操作的操作。

7. 发明授权

US08027373B2 Quick detection of signaling in a wireless communication system 有权
标题翻译：在无线通信系统中快速检测信令
公开(公告)号：US08027373B2
公开(公告)日：2011-09-27
申请号：US11228045
申请日：2005-09-15
申请人： Parvathanathan Subrahmanya , Thejaswi Bharadwaj Madapushi Sheshadri , Vivek Chawla
发明人： Parvathanathan Subrahmanya , Thejaswi Bharadwaj Madapushi Sheshadri , Vivek Chawla
IPC分类号： H04B1/00
CPC分类号： H04L27/2278 , H04B1/7085 , H04B2201/70709 , H04L2027/003 , H04L2027/0034 , H04L2027/0065 , H04W52/0229 , Y02D70/122 , Y02D70/1242 , Y02D70/166 , Y02D70/24 , Y02D70/40
摘要： Quick frequency tracking (QFT), quick time tracking (QTT), and non-causal pilot filtering (NCP) are used to detect sporadically transmitted signaling, e.g., paging indicators. For QFT, multiple hypothesized frequency errors are applied to an input signal to obtain multiple rotated signals. The energies of the rotated signals are computed. The hypothesized frequency error with the largest energy is provided as a frequency error estimate. For QTT, coherent accumulation is performed on the input signal for a first set of time offsets, e.g., early, on-time, and late. Interpolation, energy computation, and non-coherent accumulation are then performed to obtain a timing error estimate with higher time resolution. For NCP, pilot symbols are filtered with a non-causal filter to obtain pilot estimates for one antenna for non-STTD and for two antennas for STTD. The frequency and timing error estimates and the pilot estimates are used to detect the signaling.
摘要翻译：使用快速频率跟踪（QFT），快速时间跟踪（QTT）和非因果导频滤波（NCP）来检测偶发地发送的信令，例如寻呼指示符。对于QFT，将多个假设频率误差应用于输入信号以获得多个旋转信号。计算旋转信号的能量。提供具有最大能量的假设频率误差作为频率误差估计。对于QTT，对于第一组时间偏移的输入信号执行相干累加，例如早，时，晚。然后执行插值，能量计算和非相干累加，以获得具有更高时间分辨率的定时误差估计。对于NCP，使用非因果滤波器对导频符号进行滤波，以获得用于非STTD的一个天线和用于STTD的两个天线的导频估计。频率和定时误差估计和导频估计用于检测信令。

8. 发明授权

US07710928B2 Channelization code determination by a user equipment 失效
标题翻译：由用户设备确定信道化码
公开(公告)号：US07710928B2
公开(公告)日：2010-05-04
申请号：US11098276
申请日：2005-04-04
申请人： Ariela Zeira , Eldad Zeira , Alexander Reznik , Stephen E. Terry
发明人： Ariela Zeira , Eldad Zeira , Alexander Reznik , Stephen E. Terry
IPC分类号： H04B7/216
CPC分类号： H04B1/7103 , H04B1/707 , H04B1/70735 , H04B1/7105 , H04B2001/70935 , H04B2201/70701 , H04B2201/70709 , H04J13/00 , H04J13/16
摘要： A time division duplex/code division multiple access user equipment receives a plurality of communication bursts transmitted in a time slot. A midamble code included in a received communication burst is determined. A channelization code of a determined midamble's communication burst is determined. A mapping between channelization codes and midamble codes exists such that each midamble being mapped to at least one channelization code and at least one midamble code being mapped to at least two channelization codes which may be received in communication bursts simultaneously.
摘要翻译：时分双工/码分多址用户设备接收在时隙中发送的多个通信突发。确定包含在所接收的通信突发中的中间码。确定确定的中间码的通信突发的信道化码。存在信道化码和中间码之间的映射，使得每个中间码被映射到至少一个信道化码，并且至少一个中间码被映射到可以在通信突发中同时接收的至少两个信道化码。

9. 发明申请

US20090268785A1 Mobile Communication Terminal, Synchronization Judging Circuit Used in the Mobile Communication Terminal, Control Method, Synchronization Judging Control Program 有权
标题翻译：移动通信终端，移动通信终端中使用的同步判断电路，控制方法，同步判断控制程序
公开(公告)号：US20090268785A1
公开(公告)日：2009-10-29
申请号：US12225705
申请日：2007-03-27
申请人： Kazunori Sato
发明人： Kazunori Sato
IPC分类号： H04B1/707
CPC分类号： H04B1/70755 , H04B2201/70701 , H04B2201/70709
摘要： Disclosed is a mobile communication terminal employing a code division multiple access scheme, in which when it is decided that the common channel level is equal to or higher than a third threshold (common channel level threshold), an RLF decision control unit compares the SIR data with a first threshold and a second threshold to decide in sync state/out-of sync state between the local spread code and the reception spread code and outputs the decision signal. When it is decided that the common channel level is lower than the third threshold, the first threshold and the second threshold are set to the same value. In this state, when it is decided that the level of the SIR data is lower than the first threshold (=second threshold), the decision signal corresponding to an out-of sync state is output immediately after a predetermined delay time elapses, thereby reducing the power dissipation.
摘要翻译：公开了采用码分多址方式的移动通信终端，其中当确定公共信道电平等于或高于第三阈值（公共信道电平阈值）时，RLF判定控制单元将SIR数据具有第一阈值和第二阈值，以决定本地扩展码和接收扩展码之间的同步状态/不同步状态，并输出判定信号。当确定公共信道级别低于第三阈值时，将第一阈值和第二阈值设置为相同的值。在这种状态下，当确定SIR数据的电平低于第一阈值（=第二阈值）时，在经过预定的延迟时间之后立即输出对应于不同步状态的判定信号，从而减少功耗。

10. 发明授权

US07593455B2 Terminal for performing wake-up with consumption of low power and wake-up method thereof 失效
标题翻译：使用低功耗唤醒方式进行唤醒的终端
公开(公告)号：US07593455B2
公开(公告)日：2009-09-22
申请号：US11339494
申请日：2006-01-26
申请人： Mi-hyun Son , Sato Takahiro , Haruyama Shinichi , Young-hwan Kim , Kwy-ro Lee , Seong-soo Lee , Hak-sun Kim
发明人： Mi-hyun Son , Sato Takahiro , Haruyama Shinichi , Young-hwan Kim , Kwy-ro Lee , Seong-soo Lee , Hak-sun Kim
IPC分类号： H04B1/00
CPC分类号： H04B1/70712 , H04B2201/70709 , H04W52/0229 , Y02D70/142 , Y02D70/144 , Y02D70/40
摘要： Provided are a terminal performing a wake-up with consumption of low power and a wake-up method performed by the terminal. The terminal includes: a passive filter outputting a correlation signal between a received signal and a reference signal; and a wake-up controller controlling whether to wake up a communication module, using the correlation signal output from the passive filter. Thus, a wake-up signal can be processed using the passive element that does not consume power during its operation. Also, a wake-up of a communication module can be controlled using the result of processing the wake-up signal. As a result, power consumption can be greatly reduced during the wake-up.
摘要翻译：提供了一种终端，其执行消耗低功率的唤醒和终端执行的唤醒方法。终端包括：无源滤波器，其输出接收信号和参考信号之间的相关信号; 以及使用从无源滤波器输出的相关信号来控制是否唤醒通信模块的唤醒控制器。因此，可以使用在其操作期间不消耗电力的无源元件来处理唤醒信号。此外，可以使用处理唤醒信号的结果来控制通信模块的唤醒。因此，唤醒期间功耗可以大大降低。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式