公开(公告)号：US07170923B2

公开(公告)日：2007-01-30

申请号：US10338714

申请日：2003-01-09

Applicant: Soo-Bok Yeo ,  Sang-Min Bae ,  Ji-Won Ha ,  Jong-Han Kim

Inventor： Soo-Bok Yeo ,  Sang-Min Bae ,  Ji-Won Ha ,  Jong-Han Kim

IPC: H04B1/69 ,  H04B7/00 ,  H04B7/216

CPC classification number: H04L1/20 ,  H04B1/70755 ,  H04B2201/70709 ,  H04L1/201

Abstract: An apparatus for detecting a frame transmission period in a CDMA mobile communication system supporting a discontinuous transmission mode. A first frame detector performs primary frame detection by calculating a signal-to-interference ratio (SIR) using traffic symbol energy, pilot symbol energy and noise energy measured for a predetermined time period, and comparing the SIR with a predetermined frame detection threshold value. A decoder calculates a symbol error rate (SER) by decoding symbols received for the predetermined time period. A second frame detector selects an SER threshold value according to frame detection information from the first frame detector, and compares the selected SER threshold value with the SER to determine whether a frame has been transmitted.

Abstract translation: 一种在支持不连续传输模式的CDMA移动通信系统中检测帧传输周期的装置。 第一帧检测器通过使用在预定时间段内测量的业务符号能量，导频符号能量和噪声能量，并将SIR与预定帧检测阈值进行比较来计算信号干扰比（SIR）来执行主帧检测。 解码器通过解码在预定时间段内接收到的符号来计算符号错误率（SER）。 第二帧检测器根据来自第一帧检测器的帧检测信息选择SER阈值，并将所选择的SER阈值与SER进行比较，以确定帧是否已被发送。

公开(公告)号：US20050276248A1

公开(公告)日：2005-12-15

申请号：US10875107

申请日：2004-06-09

Applicant: Amit Butala ,  Parvathanathan Subrahmanya ,  Hyukjun Oh

Inventor： Amit Butala ,  Parvathanathan Subrahmanya ,  Hyukjun Oh

IPC: H04B7/005 ,  H04L1/20 ,  H04B7/212

CPC classification number: H04W52/04 ,  H04L1/20 ,  H04L1/201 ,  H04W52/12 ,  H04W52/16 ,  H04W52/20 ,  H04W52/287 ,  H04W52/362 ,  H04W52/44

Abstract: Erasure detection and power control are performed for an intermittently active transport channel with unknown format. A receiver processes each received block and determines whether it passes or fails CRC. For each received block with CRC failure, the receiver performs erasure detection by computing a symbol error rate (SER) and energy of the received block, comparing the computed SER against an SER threshold, comparing the computed energy against an energy threshold, and declaring an erasure if the computed SER is less than the SER threshold and the computed energy exceeds the energy threshold. The SER and energy thresholds may be adjusted based on the average SER and the average energy for prior received blocks with CRC failures. For power control, an SIR target is increased by an UP step whenever an erased block is detected for the transport channel.

Abstract translation: 对具有未知格式的间歇活动的传输信道执行擦除检测和功率控制。 接收器处理每个接收的块并确定其是否通过或失败CRC。 对于每个具有CRC故障的接收块，接收机通过计算接收块的符号错误率（SER）和能量来执行擦除检测，将计算的SER与SER阈值进行比较，将计算出的能量与能量阈值进行比较，并且声明 如果计算的SER小于SER阈值并且计算的能量超过能量阈值，则擦除。 可以基于具有CRC故障的先前接收的块的平均SER和平均能量来调整SER和能量阈值。 对于功率控制，每当检测到用于传输信道的擦除块时，SIR目标通过UP步增加。

公开(公告)号：US20040229639A1

公开(公告)日：2004-11-18

申请号：US10438105

申请日：2003-05-15

Inventor： Martin Howard Meyers ,  Alexandro Salvarani ,  Carl Francis Weaver

IPC: H04B007/00 ,  H04Q007/20

CPC classification number: H04L1/20 ,  H04L1/201 ,  H04W52/12 ,  H04W52/20 ,  H04W52/26 ,  H04W52/48

Abstract: A method of detecting DTX frames in frames received over a communication channel and a power control method are described, where radio link protocol (RLP) information received over the channel may be received, and one or more frames associated with the RLP information may be determined as an erasure or a DTX frame, based on the RLP information. Such determination may be incorporated into outer loop power control algorithms for adjusting a threshold related to a specified quality of service.

Abstract translation: 描述了一种在通过通信信道接收的帧中检测DTX帧的方法和功率控制方法，其中可以接收通过信道接收的无线电链路协议（RLP）信息，并且可以确定与RLP信息相关联的一个或多个帧 作为擦除或DTX帧，基于RLP信息。 这样的确定可以被合并到外环功率控制算法中，用于调整与指定服务质量相关的阈值。

公开(公告)号：US20040203463A1

公开(公告)日：2004-10-14

申请号：US10316760

申请日：2002-12-10

Inventor： Qingxin Chen ,  Shimman Patel

IPC: H04B007/00 ,  H04Q007/20

CPC classification number: H04L1/0061 ,  H04L1/0072 ,  H04L1/20 ,  H04L1/201

Abstract: Techniques to detect for DTX frames in a nullprimarynull transmission that may be sent in a non-continuous manner using a nullsecondarynull transmission that is sent during periods of no transmission for the primary transmission. The primary and secondary transmissions may be the ones sent on the F-DCCH and Forward Power Control Subchannel, respectively, in an IS-2000 system. In one method, a determination is first made whether or not a frame received for the primary transmission in a particular frame interval is a good frame (e.g., based on CRC). If the received frame is not a good frame, then a determination is next made whether the received frame is a DTX frame or an erased frame based on a number of metrics determined for the primary and secondary transmissions. The metrics may include symbol error rate of the received frame, secondary transmission (e.g., PC bit) energy, and received frame energy.

Abstract translation: 在“主”传输中检测可以以非连续方式发送的DTX帧的技术，使用在主传输的无传输期间发送的“次”传输。 主要和次要传输可以分别是在IS-2000系统中在F-DCCH和前向功率控制子信道上发送的。 在一种方法中，首先确定在特定帧间隔中为主传输接收的帧是否是良好帧（例如，基于CRC）。 如果接收到的帧不是良好的帧，则接着确定接收到的帧是否是基于针对主传输和次传输确定的度量的数目的DTX帧或已擦除的帧。 度量可以包括接收到的帧的符号错误率，二次传输（例如，PC位）能量和接收到的帧能量。

公开(公告)号：US06675012B2

公开(公告)日：2004-01-06

申请号：US09944420

申请日：2001-08-31

Applicant: Steven D. Gray

Inventor： Steven D. Gray

IPC: H04Q720

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：US20030120991A1

公开(公告)日：2003-06-26

申请号：US10029704

申请日：2001-12-21

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

IPC: H03M013/00

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. Particular classification operations performed by at least one of the first and second classification circuitry are programmable via software that may be supplied to the processor via an associated host device. The processor may be configured as a network processor integrated circuit to provide an interface between a network and a switch fabric in a router or switch.

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。 由第一和第二分类电路中的至少一个执行的特定分类操作可经由可经由相关主机设备提供给处理器的软件来编程。 处理器可以被配置为网络处理器集成电路，以在路由器或交换机中的网络和交换机结构之间提供接口。

公开(公告)号：US06480472B1

公开(公告)日：2002-11-12

申请号：US09358634

申请日：1999-07-21

Applicant: Yu-Cheun Jou ,  Edward G. Tiedemann, Jr.

Inventor： Yu-Cheun Jou ,  Edward G. Tiedemann, Jr.

IPC: H04Q720

CPC classification number: H04L1/20 ,  H01L23/53295 ,  H01L24/02 ,  H01L2924/01004 ,  H01L2924/01006 ,  H01L2924/01013 ,  H01L2924/01014 ,  H01L2924/01019 ,  H01L2924/01027 ,  H01L2924/01033 ,  H01L2924/01067 ,  H01L2924/01074 ,  H01L2924/01075 ,  H04B17/26 ,  H04B17/318 ,  H04B17/327 ,  H04B17/336 ,  H04L1/201 ,  H04W36/08 ,  H04W48/20 ,  H04W52/0216 ,  H04W52/0245 ,  H04W72/08 ,  H04W88/02 ,  Y02D70/25

Abstract: A method and apparatus for supervising a dedicated control channel when in the discontinuous transmission mode. The mobile station monitors the frames it receives from a base station and maintains a counter of bad, good, and empty frames, referred to as COUNT1, COUNT2, COUNT3, respectively. If a received frame is a good frame, COUNT1 is reset to zero and COUNT2 is incremented. If the received frame is a bad frame, COUNT1 is incremented and COUNT2 is reset to zero. If the received frame is an empty frame, COUNT1 and COUNT2 are unchanged but COUNT3 is incremented. A transmitter coupled to the mobile station is enabled or disabled depending upon which, if any, of the COUNTs reaches or exceeds a designated threshold value. In another embodiment, an average aggregated value reflecting the strength of the pilot signals in an active set, measured at the mobile station, is used for comparison to a threshold.

Abstract translation: 一种用于在不连续传输模式下监视专用控制信道的方法和装置。 移动站监视从基站接收到的帧，并分别维护称为COUNT1，COUNT2，COUNT3的不良，良好和空的帧的计数器。 如果接收到的帧是一个好的帧，则COUNT1被重置为零并且COUNT2被递增。 如果接收到的帧是坏帧，则COUNT1递增，并且COUNT2被重置为零。 如果接收到的帧是空帧，则COUNT1和COUNT2不变，但COUNT3递增。 取决于COUNT的哪个（如果有的话）达到或超过指定的阈值，耦合到移动站的发射机被启用或禁用。 在另一个实施例中，反映在移动站测量的活动集中的导频信号的强度的平均聚合值用于与阈值进行比较。

公开(公告)号：US20020160769A1

公开(公告)日：2002-10-31

申请号：US09944420

申请日：2001-08-31

Inventor： Steven D. Gray

IPC: H04Q007/20

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.

Abstract translation: 用于生成消息摘要字段的装置和相关联的方法。 消息摘要字段指示是否在IEEE 802.11无线电通信系统中可操作的移动台被调谐的频率范围上传送802.11格式的数据分组。 指示灯是否检测到802.11数据包。 并且，记者生成测量摘要，其包括填充有指示确定的值的测量摘要字段。 随后根据动态频率选择操作对测量总结领域的价值进行分析。

公开(公告)号：US6058501A

公开(公告)日：2000-05-02

申请号：US998838

申请日：1997-12-29

Applicant: Koichi Urazoe ,  Toshimitsu Nakahara

Inventor： Koichi Urazoe ,  Toshimitsu Nakahara

IPC: H03M13/23 ,  H04L1/00 ,  H03M13/00 ,  H03M13/12

CPC classification number: H04L1/201 ,  H04L1/0054 ,  H04L1/0061

Abstract: An error detecting device of received digital data solves a problem for detecting errors in a conventional device in that error detection following the Viterbi decoding performed on most important bits cannot detect errors even if they include a considerable amount of errors, and that odd sounds result from decoding of voice data, for example. The present error detecting device includes a Viterbi decoder for carrying out the Viterbi decoding of the received digital data, an error number decision portion for comparing a threshold value with the number of errors of the path metric obtained by the Viterbi decoding, and a voice decoder for decoding the received digital data, on which the error number decision portion decides that the number of errors is below the threshold value.

Abstract translation: 接收到的数字数据的错误检测装置解决了常规装置中检测错误的问题，因为在最重要的位执行的维特比解码之后的错误检测不能检测错误，即使它们包括相当大量的错误，并且奇数声音由 语音数据的解码。 本错误检测装置包括：维特比解码器，用于对所接收的数字数据执行维特比解码;错误数决定部分，用于将阈值与通过维特比解码获得的路径度量的误差数进行比较;以及语音解码器 用于对接收到的数字数据进行解码，其中错误号决定部分决定错误数量低于阈值。

公开(公告)号：US5666370A

公开(公告)日：1997-09-09

申请号：US591127

申请日：1996-01-25

Applicant: Kalyan Ganesan ,  Kumar Swaminathan ,  Prabhat Gupta ,  P. Vijay Kumar

Inventor： Kalyan Ganesan ,  Kumar Swaminathan ,  Prabhat Gupta ,  P. Vijay Kumar

IPC: H03M13/29 ,  H03M13/35 ,  H04L1/00 ,  H04L1/20 ,  G06F11/08

CPC classification number: H04L1/0065 ,  H03M13/09 ,  H03M13/21 ,  H03M13/27 ,  H03M13/29 ,  H03M13/2903 ,  H03M13/2927 ,  H03M13/35 ,  H04L1/0054 ,  H04L1/007 ,  H04L1/201 ,  H04L1/208

Abstract: An improved error control coding scheme is implemented in low bit rate coders in order to improve their performance in the presence of transmission errors typical of the digital cellular channel. The error control coding scheme exploits the nonlinear block codes (NBCs) for purposes of tailoring those codes to a fading channel in order to provide superior error protection to the compressed half rate speech data. For a half rate speech codec assumed to have a frame size of 40 ms, the speech encoder puts out a fixed number of bits per 40 ms. These bits are divided into three distinct classes, referred to as Class 1, Class 2 and Class 3 bits. A subset of the Class 1 bits are further protected by a CRC for error detection purposes. The Class 1 bits and the CRC bits are encoded by a rate 1/2 Nordstrom Robinson code with codeword length of 16. The Class 2 bits are encoded by a punctured version of the Nordstrom Robinson code. It has an effective rate of 8/14 with a codeword length 14. The Class 3 bits are left unprotected. The coded Class 1 plus CRC bits, coded Class 2 bits, and the Class 3 bits are mixed in an interleaving array of size 16.times.17 and interleaved over two slots in a manner that optimally divides each codeword between the two slots. At the receiver the coded Class 1 plus CRC bits, coded Class 2 bits, and Class 3 bits are extracted after de-interleaving.

Abstract translation: 在低比特率编码器中实现改进的误差控制编码方案，以便在存在数字蜂窝信道典型的传输错误的情况下提高它们的性能。 错误控制编码方案利用非线性块码（NBC），以便将这些码定制到衰落信道，以便为压缩的半速率语音数据提供优良的错误保护。 对于假定帧大小为40ms的半速率语音编解码器，语音编码器每40ms提出固定数量的位。 这些位被分为三个不同的类，称为1类，2类和3类。 Class 1位的一个子集进一步受到CRC的保护，以便进行错误检测。 1比特和CRC比特由码字长度为16的速率+ E，fra 1/2 + EE Nordstrom Robinson码编码。2类比特由Nordstrom Robinson码的穿孔版本编码。 它的有效速率为+ E，带有码字长度为14的8/14 + EE。3类比特未被保护。 经编码的1类加CRC比特，2类编码和3类比特混合在大小为16×17的交织阵列中，并且以两个时隙之间的每个码字最佳分割的方式在两个时隙上进行交织。 在接收器处，解码后提取编码的1类加CRC比特，2类编码和3类比特。