Method and apparatus for voice communication
    1.
    发明申请
    Method and apparatus for voice communication 审中-公开
    用于语音通信的方法和装置

    公开(公告)号:US20060280159A1

    公开(公告)日:2006-12-14

    申请号:US11149802

    申请日:2005-06-10

    IPC分类号: H04B7/216

    CPC分类号: H04L1/1887 H04L1/1819

    摘要: The present invention is a method and apparatus for voice communication. Vocoded frames are transmitted using a transmission intervals. Each transmission interval is split into a first interval portion and a second interval portion. Code symbols associated with each vocoded frame are divided into a group A and a group B. The method includes transmitting group A code symbols of a first vocoded frame using a first interval portion of an interval i; decoding the group A code symbols received at the first interval portion of the interval i; performing an error detection code check on the first interval portion of the interval i; generating and sending a negative acknowledgment signal when the first interval portion of the interval i fails the error detection code check; and transmitting group B code symbols of the first vocoded frame using a second interval portion of an interval i+N.

    摘要翻译: 本发明是用于语音通信的方法和装置。 使用传输间隔传输声码帧。 每个传输间隔被分成第一间隔部分和第二间隔部分。 与每个声码帧相关联的代码符号被分成组A和组B.该方法包括使用间隔i的第一间隔部分发送第一声码帧的组A码符号; 解码在间隔i的第一间隔部分处接收的组A码符号; 对间隔i的第一间隔部分执行错误检测码检查; 当间隔i的第一间隔部分未通过错误检测码检查时,产生和发送否定确认信号; 以及使用间隔i + N的第二间隔部分来发送第一声码帧的组B码符号。

    Method and apparatus for implementing PN masks for a truncated M-sequence
    2.
    发明授权
    Method and apparatus for implementing PN masks for a truncated M-sequence 有权
    用于实现截断的M序列的PN掩模的方法和装置

    公开(公告)号:US06246676B1

    公开(公告)日:2001-06-12

    申请号:US09459688

    申请日:1999-12-13

    IPC分类号: H04B7216

    摘要: Method and apparatus to provide a pseudo random noise (PN) sequence having a particular code phase offset for use in a radio in a Code Division Multiple Access (CDMA) radio system (100). In one embodiment, a first mask (320) is applied to shift a reference PN sequence to the assigned PN code phase (416). Upon reaching the end of the reference PN sequence, the initial state is reloaded (420) into the PN generator state register to reset the state value to its initial value, thereby producing a cyclical sequence. In a second embodiment, a first mask (622) and a second mask (624) are applied to the reference sequence produced by the PN generator state registers (620) to produce the appropriate portions of the output sequence.

    摘要翻译: 提供具有用于码分多址(CDMA)无线电系统(100)中的无线电中的特定码相位偏移的伪随机噪声(PN)序列的方法和装置。 在一个实施例中,施加第一掩模(320)以将参考PN序列移位到所分配的PN码相位(416)。 在到达参考PN序列的末尾时,将初始状态重新加载(420)到PN发生器状态寄存器中,以将状态值重置为其初始值,从而产生循环序列。 在第二实施例中,将第一掩模(622)和第二掩模(624)应用于由PN发生器状态寄存器(620)产生的参考序列,以产生输出序列的适当部分。

    Soft handoff between cellular systems employing different encoding rates
    3.
    发明授权
    Soft handoff between cellular systems employing different encoding rates 有权
    使用不同编码率的蜂窝系统之间的软切换

    公开(公告)号:US07046719B2

    公开(公告)日:2006-05-16

    申请号:US09801891

    申请日:2001-03-08

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

    摘要: A receiver (200) is provided receiving signals from differing base stations (BTSA and BTSB). The signal from BTSA is encoded using a first rate convolutional encoder while the signal transmitted from BTSB is encoded using a second rate convolutional encoder. Since the multiple base station links may result in a different number of symbols being received for each bit transmitted, the symbols received for each link cannot be simply combined. Therefore, in the preferred embodiment of the present invention, the resulting symbols are passed to multiple branch metric circuits (210–211), where branch metrics (μi) for the symbols are obtained. After the ith branch metrics for the base stations are computed, the branch metrics for each base station are passed to a combiner (212) where they are combined.

    摘要翻译: 接收器(200)被提供为接收来自不同基站(BTS< A>和BTS< B> B>)的信号。 使用第一速率卷积编码器对来自BTS A的信号进行编码,而使用第二速率卷积编码器对从BTS B发送的信号进行编码。 由于多个基站链路可能导致针对所发送的每个比特接收到不同数量的符号,因此不能简单地组合每个链路所接收的符号。 因此,在本发明的优选实施例中,所得到的符号被传递到多个分支度量电路(210-211),其中获得用于符号的分支度量(μ∈Ii)。 在计算了基站的第i个分支度量之后,将每个基站的分支度量传递到组合器(212),在组合器(212)中组合它们。

    Multiple configuration communication apparatus
    4.
    发明申请
    Multiple configuration communication apparatus 有权
    多配置通信装置

    公开(公告)号:US20070140161A1

    公开(公告)日:2007-06-21

    申请号:US11303492

    申请日:2005-12-16

    IPC分类号: H04Q7/00

    CPC分类号: H04W88/06

    摘要: Multiple-configuration communication apparatus includes: a communication device (130) simultaneously maintaining at least a first and a second channel; a storage device (114, 116, 118) storing a plurality of communication configurations; and a configuration controller (120) determining a first time frame and during the first time frame, selecting a first communication configuration of the plurality of communication configurations and controlling the communication device to configure itself to the first communication configuration to at least one of transmit and receive information over the first channel, and determining a second time frame that is different from the first time frame and during the second time frame, selecting a second communication configuration of the plurality of communication configurations, and controlling the communication device to configure itself to the second communication configuration to at least one of transmit and receive information over the second channel.

    摘要翻译: 多配置通信装置包括:通信设备(130)同时保持至少第一和第二信道; 存储多个通信配置的存储设备(114,116,118); 以及配置控制器(120),其确定第一时间帧,并且在所述第一时间帧期间,选择所述多个通信配置的第一通信配置,并且控制所述通信设备将其自身配置为所述第一通信配置为发送和 通过第一信道接收信息,并且确定与第一时间帧不同的第二时间帧,并且在第二时间帧期间,选择多个通信配置的第二通信配置,并且控制通信设备将其自身配置为 第二通信配置到第二信道上的发送和接收信息中的至少一个。

    Method for dynamic frequency selection
    5.
    发明授权
    Method for dynamic frequency selection 有权
    动态频率选择方法

    公开(公告)号:US06914876B2

    公开(公告)日:2005-07-05

    申请号:US10320054

    申请日:2002-12-16

    IPC分类号: H04L12/28 H04J11/00

    摘要: A communication band is divided into a plurality of allocation channels (202, 204, 206, 208). At least one allocation channel (204) is transferred to a transform domain. The behavior of the at least one allocation channel is monitored in the transform domain in order to derive a set of statistics. The set of statistics are used to determine a channel category for the at least one allocation channel.

    摘要翻译: 通信频带被分成多个分配信道(202,204,206,208)。 至少一个分配信道(204)被传送到变换域。 在变换域中监视至少一个分配信道的行为,以得出一组统计信息。 统计数据集用于确定至少一个分配信道的信道类别。

    Method and apparatus for adaptive signaling in a QAM communication system
    6.
    发明授权
    Method and apparatus for adaptive signaling in a QAM communication system 有权
    QAM通信系统中自适应信令的方法和装置

    公开(公告)号:US06904097B2

    公开(公告)日:2005-06-07

    申请号:US09871833

    申请日:2001-06-01

    摘要: A method and apparatus to adaptively puncture bits within QAM modulated data symbols transmitted in a communication system in order to effect a signaling channel. The method and apparatus utilize inherent characteristics of a particular mapping scheme for the QAM constellation to selectively puncture particular bits within a data symbol with signaling information and predetermined binary values to selectively increase the log-likelihood ratio gains of those particular bits punctured with the signaling information. The log-likelihood ratios are used to obtain the signaling information and, thus, increasing the gain of the log-likelihood ratios affords greater reliability for the signaling information without increasing the required system resources.

    摘要翻译: 一种在通信系统中自适应地穿透QAM调制数据符号内的比特以便实现信令信道的方法和装置。 该方法和装置利用QAM星座图的特定映射方案的固有特性来选择性地使用信令信息和预定二进制值对数据符号内的特定比特进行穿孔,以选择性地增加用信令信息打破的那些特定比特的对数似然比增益 。 对数似然比用于获得信令信息,因此增加对数似然比的增益可以提供信令信息的更高的可靠性,而不增加所需的系统资源。

    Method and apparatus for calculating bit log-likelihood ratios for QAM signals
    7.
    发明授权
    Method and apparatus for calculating bit log-likelihood ratios for QAM signals 有权
    用于计算QAM信号的比特对数似然比的方法和装置

    公开(公告)号:US06834088B2

    公开(公告)日:2004-12-21

    申请号:US09804585

    申请日:2001-03-12

    IPC分类号: H04L512

    CPC分类号: H04L27/38 H04L25/067

    摘要: A method and apparatus to efficiently calculate log-likelihood ratios for each bit within M-ary QAM modulated symbols transmitted in a communication system. The method and apparatus utilize characteristics of square Karnaugh mapping of the QAM symbol constellation in order to reduce the number of distance calculations needed to determine the log-likelihood ratios for each of the bits within a demodulated symbol. The reduction in the number of calculations affords significant reduction in the time needed to determine log-likelihood ratios, especially for higher order M-ary QAM systems.

    摘要翻译: 一种用于在通信系统中发送的M-ary QAM调制符号内的每个比特有效地计算对数似然比的方法和装置。 该方法和装置利用QAM符号星座的平方Karnaugh映射的特征,以便减少确定解调符号内的每个位的对数似然比所需的距离计算的数量。 计算次数的减少大大减少了确定对数似然比所需的时间,特别是对于较高阶的M系QAM系统。

    Method and apparatus for spreading and despreading data in a spread spectrum communication system
    8.
    发明授权
    Method and apparatus for spreading and despreading data in a spread spectrum communication system 有权
    用于在扩展频谱通信系统中扩展和解扩数据的方法和装置

    公开(公告)号:US06324206B1

    公开(公告)日:2001-11-27

    申请号:US09511228

    申请日:2000-02-23

    IPC分类号: H04L2730

    摘要: A current mode of operation is provided to a Walsh spreader (203), and based on the current mode of operation, the Walsh spreader (203) either varies a Walsh code at a symbol rate, or holds the Walsh code constant. During multi-carrier transmission a first symbol within a data stream (210) is spread with a first Walsh code, while symbols immediately preceding and following the first symbol are spread by a another, differing Walsh code. The sequence of Walsh codes exiting the spreader (201) is further scrambled by a pair of Pseudo-Noise (PN) codes (224) that are held constant for three Walsh code periods during multi-carrier transmission, and are not held constant during direct-spread transmission.

    摘要翻译: 向沃尔什扩展器(203)提供当前操作模式,并且基于当前操作模式,沃尔什扩展器(203)以符号速率改变沃尔什码,或者维持沃尔什码恒定。 在多载波传输期间,数据流(210)内的第一符号以第一沃尔什码扩展,而紧邻第一符号之前和之后的符号由另一不同的沃尔什码扩展。 离散扩展器(201)的沃尔什码序列进一步被多载波传输期间的三个沃尔什码周期保持恒定的伪噪声(PN)码对(224)加扰,并且在直接 扩展传输。

    Multi-mode transmitter and receiver
    9.
    发明授权
    Multi-mode transmitter and receiver 有权
    多模发射机和接收机

    公开(公告)号:US6088399A

    公开(公告)日:2000-07-11

    申请号:US199006

    申请日:1998-11-24

    CPC分类号: H04L5/06 H04B1/692

    摘要: A transmitter (300) comprises summers (301-307, 3178-319), and mixers (309-315, 333). During multi-carrier transmission, multiple I and Q components enter the transmitter. I.sub.1 is summed with I.sub.3, Q.sub.3 is subtracted from Q.sub.1, Q.sub.1 is added to Q.sub.3, and I.sub.3 is subtracted from I.sub.1. The outputs of a first and a second summer (301, 305) enters a first and a second mixer (309, 313) where they are mixed by a cosine function. Similarly, the outputs of a third and a fourth summer (303, 307) enter a third and a fourth mixer (311, 315) where they are mixed by a sine function. The output from first and the second mixer (309, 311) enter a first summer (317) where they are summed along with the I.sub.2 component. The output from the third and the fourth mixer (313, 315) enters a second summer (319) where they are summed along with the Q.sub.2 component.

    摘要翻译: 发射机(300)包括夏季(301-307,3178-319)和混频器(309-315,333)。 在多载波传输期间,多个I和Q组件进入发射机。 I1与I3相加,从Q1中减去Q3,Q1加到Q3,从I1中减去I3。 第一和第二加法器(301,305)的输出进入第一和第二混合器(309,313),在该混合器中它们被余弦函数混合。 类似地,第三和第四加法器(303,307)的输出进入第三和第四混合器(311,315),在那里它们被正弦函数混合。 第一和第二混合器(309,311)的输出进入第一个加法器(317),它们与I2分量相加。 来自第三和第四混合器(313,315)的输出进入第二个加法器(319),在那里它们与Q2分量相加。

    System and method for vehicle based cellular offload
    10.
    发明授权
    System and method for vehicle based cellular offload 有权
    基于车载蜂窝卸载的系统和方法

    公开(公告)号:US08995956B2

    公开(公告)日:2015-03-31

    申请号:US13241873

    申请日:2011-09-23

    IPC分类号: H04W12/08 H04W84/22 H04W84/14

    CPC分类号: H04W84/22 H04W84/14

    摘要: One or more vehicle communication systems associated with one or more vehicles may be activated. The one or more vehicles may, for example, include a gateway vehicle. A backhaul connection between a vehicle communication system associated with the gateway vehicle and a cellular infrastructure may be established. Signals from the cellular infrastructure may be received at the vehicle communication system associated with gateway vehicle. Using the vehicle communication system associated with the gateway vehicle, the signals received from the cellular infrastructure may be transmitted. Signals from one or more mobile devices may be received using the vehicle communication system associated with the gateway vehicle. The signals received from the one or more mobile devices may be transmitted to the cellular infrastructure using the vehicle communication system associated with the gateway vehicle.

    摘要翻译: 可以激活与一个或多个车辆相关联的一个或多个车辆通信系统。 一个或多个车辆可以例如包括网关车辆。 可以建立与网关车辆相关联的车辆通信系统与蜂窝基础设施之间的回程连接。 可以在与网关车辆相关联的车辆通信系统处接收来自蜂窝基础设施的信号。 使用与网关车辆相关联的车辆通信系统,可以发送从蜂窝基础设施接收的信号。 可以使用与网关车辆相关联的车辆通信系统来接收来自一个或多个移动设备的信号。 可以使用与网关车辆相关联的车辆通信系统将从一个或多个移动设备接收到的信号发送到蜂窝基础设施。