公开(公告)号：US07424071B2

公开(公告)日：2008-09-09

申请号：US11168642

申请日：2005-06-27

Applicant: Stephen Alan Allpress ,  Carlo Luschi

Inventor： Stephen Alan Allpress ,  Carlo Luschi

IPC: H04L27/06

CPC classification number: H04L1/0054 ,  H04L1/0072 ,  H04L1/201

Abstract: A decoder for use in a wireless communication device, the decoder comprising a correlator for correlating a received data sequence with a set of codewords such that a correlation value is generated for each correlation, wherein the set of codewords correspond to possible codewords that could be generated from encoding bit sequences having a predetermined number of information bits; a selector for selecting a first correlation value and a second correlation value generated by the correlator and for subtracting the second correlation value from the first correlation value to generate a third value; and a comparator for comparing the third value with a predetermined value to generate a decoding reliability indicator.

Abstract translation: 一种用于无线通信设备的解码器，所述解码器包括相关器，用于将接收到的数据序列与一组码字相关，使得为每个相关产生相关值，其中所述码字集合对应于可以生成的可能码字 从具有预定数量的信息比特的编码比特序列; 选择器，用于选择由相关器产生的第一相关值和第二相关值，并从第一相关值中减去第二相关值以产生第三值; 以及比较器，用于将第三值与预定值进行比较，以产生解码可靠性指示符。

公开(公告)号：US20080171543A1

公开(公告)日：2008-07-17

申请号：US11627211

申请日：2007-01-25

Applicant: PHAT HONG TRAN ,  XING QIAN

Inventor： PHAT HONG TRAN ,  XING QIAN

IPC: H04Q7/34

CPC classification number: H04L1/0045 ,  H04L1/0061 ,  H04L1/0072 ,  H04L1/08 ,  H04L1/201 ,  H04L1/203

Abstract: Apparatus, and an associated method, for determining whether to accept as valid a data segment, such as a radio block communicated pursuant to an EDGE communication session. A bit error rate measurer measures the bit error rate of a header part of a received radio block. The measured bit error rate is compared against a selected threshold. Results of the comparison are determinative of whether the radio block is accepted as valid or rejected as corrupted.

Abstract translation: 用于确定是否接受诸如根据EDGE通信会话传送的无线电块的数据段的有效的装置和相关联的方法。 误码率测量器测量接收到的无线电块的报头部分的误码率。 将测量的比特误码率与所选择的阈值进行比较。 比较结果决定了无线电阻抗是否被接受为有效或拒绝被破坏。

公开(公告)号：US20070104248A1

公开(公告)日：2007-05-10

申请号：US11269372

申请日：2005-11-08

Applicant: Chee Chan ,  Beng Chua

Inventor： Chee Chan ,  Beng Chua

IPC: H04B1/00 ,  H04L1/02

CPC classification number: H04L1/08 ,  H04L1/0002 ,  H04L1/0043 ,  H04L1/0052 ,  H04L1/0071 ,  H04L1/1867 ,  H04L1/201

Abstract: A communication system that transfers digital data on a fixed frequency channel of a radio frequency band in the presence of interference from at least one FHSS interference source includes a time diversity generation circuit. The time diversity circuit compacts a duration of data frames then replicate the time compressed data frames. The duplicated time compressed frames of data are transmitted to a communication receiver that has a time diversity data recovery circuit. The time diversity data recovery circuit buffers the received compressed and replicated data frames, evaluates whether each of the duplicated time compressed data frames are received correctly. If any one of the duplicated time compressed data frames is destroyed, the copy of the destroyed duplicated time compressed data frame is used to recover the data frame.

Abstract translation: 在存在来自至少一个FHSS干扰源的干扰的情况下，在无线电频带的固定频率信道上传送数字数据的通信系统包括时间分集生成电路。 时间分集电路压缩数据帧的持续时间，然后复制时间压缩的数据帧。 复制的时间压缩数据帧被发送到具有时间分集数据恢复电路的通信接收机。 时间分集数据恢复电路对所接收的压缩和复制的数据帧进行缓冲，评估是否正确接收到复制的时间压缩数据帧。 如果复制的时间压缩数据帧中的任何一个被破坏，则使用经破坏的复制时间压缩数据帧的副本来恢复数据帧。

公开(公告)号：US20060281485A1

公开(公告)日：2006-12-14

申请号：US10577394

申请日：2004-01-05

Applicant: Philip Johnson ,  Ramanathan Asokan

Inventor： Philip Johnson ,  Ramanathan Asokan

IPC: H04M1/00

CPC classification number: H04L1/0046 ,  H04L1/0038 ,  H04L1/0054 ,  H04L1/0075 ,  H04L1/20 ,  H04L1/201

Abstract: Disclosed is a system and method for channel decoding speech frames in a receiver capable of multiple (M) codec modes, wherein channel encoded speech frames include an inband bit portion and a speech portion. An inband bit decoder decodes the inband bit portion (700) of a received frame to obtain confidence levels associated with each of the M codec modes. Using these confidence levels, the codec modes are ordered from most to least likely. The speech frame is then decoded by a channel decoder using the most likely codec mode (704). A frame determination check (720) is performed to determine the quality of the decoded speech frame. If the decoded speech frame is determined to be of poor quality, then the channel decoding process is repeated using the next most likely codec mode (736) corresponding to the next highest inband bit decoding confidence level. This process is repeated until a good speech frame is decoded or some exit criteria is reached.

Abstract translation: 公开了一种用于在具有多（M）个编解码器模式的接收机中对语音帧进行信道解码的系统和方法，其中信道编码语音帧包括带内比特部分和语音部分。 带内位解码器对接收到的帧的带内比特部分（700）进行解码以获得与M个编解码器模式中的每一个相关联的置信度。 使用这些置信水平，编解码器模式从大多数到最不可能排序。 然后，语音帧由使用最可能的编解码器模式（704）的信道解码器解码。 执行帧确定检查（720）以确定解码的语音帧的质量。 如果解码的语音帧被确定为质量差，则使用对应于下一个最高带内位解码置信水平的下一个最可能的编解码器模式（736）重复信道解码过程。 重复此过程，直到解码好的语音帧或达到一些退出标准。

公开(公告)号：US07143178B2

公开(公告)日：2006-11-28

申请号：US09761341

申请日：2001-01-16

Applicant: Serguei Glazko ,  Baaziz Achour ,  Yu Chuan Lin

Inventor： Serguei Glazko ,  Baaziz Achour ,  Yu Chuan Lin

IPC: G06F15/16

CPC classification number: H04L1/20 ,  H04J3/14 ,  H04J3/17 ,  H04L1/201

Abstract: A system and method for detecting discontinuous transmission (DTX) frames. The inventive method includes the steps of receiving data transmitted in a plurality of frames; classifying each of the frames; analyzing the classification of a number of successive frames of the received data and providing a metric with respect thereto; and determining, in response to the metric, if a frame is a discontinuous frame. In the illustrative embodiment, the step of classifying includes the step of error checking the frames using a cyclic redundancy check (CRC) error checking protocol. The received frames are classified as good frames (G), erasure frames (E), or discontinuous frames (D). A numerical value is assigned to each of the frames based on the classification thereof. Next, the frames are filtered to provide an output Yn=Yn−1+Xn where ‘n’ is a frame number, Yn is the filter output for a given frame n, Yn−1 is the filter output for a previous frame, and Xn is a stream of input frames. A threshold is set for the output Yn to facilitate the detection of discontinuous frames. That is, a detection of a discontinuous transmission frame is indicated when a frame is classified as an ‘erasure’ and the filter output exceeds the threshold. On the detection of a discontinuous frame, the classification of the frame is changed from ‘erasure’ to ‘discontinuous’. By reclassifying improperly classified erasure frames, the mobile receiver is inhibited from requesting retransmission of the frames or a change in the transmit power level. Consequently, network throughput and capacity are optimized and system power is conserved.

Abstract translation: 一种用于检测不连续传输（DTX）帧的系统和方法。 本发明的方法包括以下步骤：接收以多个帧发送的数据; 对每个框架进行分类; 分析所接收数据的连续帧的数目的分类并提供与之相关的度量; 以及响应于所述度量，确定帧是不连续帧。 在说明性实施例中，分类步骤包括使用循环冗余校验（CRC）错误检查协议对帧进行错误校验的步骤。 所接收的帧被分类为好帧（G），擦除帧（E）或不连续帧（D）。 基于其分类，将数值分配给每个帧。 接下来，对帧进行滤波以提供输出Yn = Yn-1 + Xn，其中'n'是帧号，Yn是给定帧n的滤波器输出，Yn-1是前一帧的滤波器输出，以及 Xn是输入帧流。 设置输出Yn的阈值以便于检测不连续的帧。 也就是说，当帧被分类为“擦除”并且滤波器输出超过阈值时，指示不连续传输帧的检测。 在不连续帧的检测中，帧的分类从“擦除”改变为“不连续”。 通过重新分类不正确分类的擦除帧，禁止移动接收机请求重发帧或发射功率电平的变化。 因此，网络吞吐量和容量得到优化，系统功耗得以节省。

公开(公告)号：US07113806B2

公开(公告)日：2006-09-26

申请号：US10648049

申请日：2003-08-26

Applicant: Steven D. Gray

Inventor： Steven D. Gray

IPC: H04Q7/20

CPC classification number: H04W72/08 ,  H04L1/201 ,  H04W24/10 ,  H04W84/12

Abstract: Apparatus, and an associated method, for generating a message summary field. The message summary field indicates whether 802.11-formatted data packets are communicated upon a frequency range to which a mobile station operable in an IEEE 802.11 radio communication system is tuned. An indicator indicates whether an 802.11 data packet is detected. And, a reporter generates a measurement summary which includes a measurement summary field populated with a value indicating the determination. Subsequent analysis of the value of the field of the measurement summary is utilized pursuant to dynamic frequency selection operations.

公开(公告)号：US07061999B2

公开(公告)日：2006-06-13

申请号：US10075008

申请日：2002-02-13

Applicant: Dayong Chen

Inventor： Dayong Chen

IPC: H04L27/06

CPC classification number: H04L1/0047 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/20 ,  H04L1/201

Abstract: A received information signal is decoded to obtain the received information and to produce at least one feature of the received information signal. The received information signal is preliminary classified as containing a normal burst or a truncated burst based upon the at least one feature, to obtain a preliminary classification. Cyclic redundancy checking of the received information that is decoded is performed. The received information signal is then further classified as containing a normal burst or a truncated burst based upon the preliminary classification and whether the cyclic redundancy checking is valid, to obtain a further classification. The received information signal may be still further classified as containing a normal burst or a truncated burst based upon the further classification and at least one transition rule for normal bursts and truncated bursts between the received information signal and a previously received information signal.

Abstract translation: 对接收到的信息信号进行解码以获得所接收的信息并产生所接收的信息信号的至少一个特征。 所接收的信息信号基于至少一个特征被初步分类为包含正常突发或截断突发，以获得初步分类。 执行被解码的接收信息的循环冗余校验。 接收到的信息信号随后根据初步分类进一步分类为包含正常突发或截断突发，以及循环冗余校验是否有效，以获得进一步的分类。 所接收的信息信号可以进一步分类为包含基于进一步分类的正常突发或截断突发，以及用于接收的信息信号和先前接收到的信息信号之间的正常突发和截断突发的至少一个转换规则。

公开(公告)号：US20060053352A1

公开(公告)日：2006-03-09

申请号：US11210788

申请日：2005-08-25

Applicant: Carsten Juncker

Inventor： Carsten Juncker

IPC: G06F11/00

CPC classification number: H04L1/201 ,  H04L1/0061 ,  H04L1/203

Abstract: There is provided a receiver comprising a processing unit, a communications unit for receiving frames including training sequence symbols or pilot symbols, the processing unit being configured to use Cyclic Redundancy Check for detecting errors in the received frames. When no errors in a given frame are discovered on the basis of the Cyclic Redundancy Check, the processing unit is further configured to define a TSC, training sequence code, bit error rate for the bursts of the given frame on the basis of the training sequence symbols or the pilot symbols; to define an upper limit for the TSC bit error rate; and to determine the given frame to be bad when the TSC bit error rate for the bursts of the given frame is greater than the upper limit of the TSC bit error rate.

Abstract translation: 提供了一种接收机，包括处理单元，用于接收包括训练序列符号或导频符号的帧的通信单元，所述处理单元被配置为使用循环冗余校验来检测接收到的帧中的错误。 当在循环冗余检查的基础上没有发现给定帧中的错误时，处理单元还被配置为基于训练序列来定义给定帧的突发的TSC，训练序列码，比特错误率 符号或导频符号; 定义TSC比特错误率的上限; 并且当给定帧的突发的TSC比特错误率大于TSC比特错误率的上限时，确定给定的帧是坏的。

公开(公告)号：US06915480B2

公开(公告)日：2005-07-05

申请号：US10029704

申请日：2001-12-21

Applicant: Mauricio Calle ,  Joel R. Davidson ,  James T. Kirk ,  Betty A. McDaniel ,  Maurice A. Uebelhor

Inventor： Mauricio Calle ,  Joel R. Davidson ,  James T. Kirk ,  Betty A. McDaniel ,  Maurice A. Uebelhor

IPC: G06F11/00 ,  H03M13/00 ,  H04L1/00

CPC classification number: H04L1/201 ,  H04L1/0061 ,  H04L1/0082 ,  H04L2001/0092

Abstract: A network processor or other type of processor includes first classification circuitry, scheduling circuitry and second classification circuitry. The first classification circuitry is configured to determine for a given packet received by the processor whether the packet has one or more errors. The scheduling circuitry in an illustrative embodiment receives an indication of the error determination made by the first classification circuitry, and based on the indication controls the dropping of the given packet from the processor memories if the packet has one or more errors, e.g., via a flush transmit command. The second classification circuitry, which may be implemented as a single classification engine or a set of such engines, may be configured to perform at least one classification operation for the given packet, e.g., if the packet is supplied thereto by the scheduling circuitry.

Abstract translation: 网络处理器或其他类型的处理器包括第一分类电路，调度电路和第二分类电路。 第一分类电路被配置为确定由处理器接收到的给定分组数据包是否具有一个或多个错误。 说明性实施例中的调度电路接收由第一分类电路作出的错误确定的指示，并且如果分组具有一个或多个错误，则基于该指示控制来自处理器存储器的给定分组的丢弃，例如，经由 flush发送命令。 可以被实现为单个分类引擎或一组这样的引擎的第二分类电路可以被配置为对给定分组执行至少一个分类操作，例如，如果分组被调度电路提供给它。

公开(公告)号：US20050003766A1

公开(公告)日：2005-01-06

申请号：US10883867

申请日：2004-07-02

Applicant: Yue Chen

Inventor： Yue Chen

IPC: H04L1/00 ,  H04L1/20 ,  G11C29/00

CPC classification number: H04L1/20 ,  H04L1/0025 ,  H04L1/201 ,  H04L2001/0092

Abstract: A method for identifying a bad GSM speed frame and simultaneously maintaining a frame erasure rate below a specified value. The method is based upon a joint use of four signal quality metrics: (1) frame CRC parity check; (2) estimated burst signal-to-noise ratio; (3) estimated frame bit error count; and (4) stealing flag values of a frame. Another feature includes providing an improved estimated burst signal-to-noise ratio.

Abstract translation: 一种用于识别不良GSM速度帧并同时将帧擦除率保持在指定值以下的方法。 该方法基于四个信号质量度量的联合使用：（1）帧CRC奇偶校验; （2）估计突发信噪比; （3）估计帧位错误计数; 和（4）窃取帧的标志值。 另一个特征包括提供改进的估计突发脉冲串信噪比。