公开(公告)号：US07283836B2

公开(公告)日：2007-10-16

申请号：US10673532

申请日：2003-09-29

Applicant: Jong-Yoon Hwang ,  Hi-Chan Moon ,  Jong-Han Kim ,  Jin-Soo Park

Inventor： Jong-Yoon Hwang ,  Hi-Chan Moon ,  Jong-Han Kim ,  Jin-Soo Park

IPC: H04B7/00 ,  H04Q7/20

CPC classification number: H04W52/283 ,  H04L1/20 ,  H04L1/201 ,  H04W52/143 ,  H04W52/24 ,  H04W52/241 ,  H04W52/247 ,  H04W52/282 ,  H04W52/288 ,  H04W52/44 ,  H04W52/54 ,  Y02D70/20

Abstract: An apparatus and method of detecting whether data exists in a received signal while a mobile communication terminal is in discontinuous transmission mode. The apparatus and method comprises generating and transmitting a forward power control command for providing the forward power control, and performing forward power control in a mobile communication system. According to the forward power control method, a power control command is generated based on a received frame including a plurality of slots each of which includes power control bits. The ratio of the power control bit energy to noise energy, which is given by a ratio of the accumulated energy of the power control bits in the slots of the received frame to an accumulated energy value of noise in the slots of the received frame, is provided, and the power control command based on a ratio of the accumulated energy value of traffic symbol bits in the slots to the accumulated energy value of the power control bits is generated when the provided ratio of the power control bits to noise is acceptable.

Abstract translation: 一种在移动通信终端处于不连续传输模式时检测接收信号中是否存在数据的装置和方法。 该装置和方法包括生成和发送用于提供正向功率控制的前向功率控制命令，以及在移动通信系统中执行正向功率控制。 根据正向功率控制方法，基于包括多个时隙的接收帧生成功率控制命令，每个时隙包括功率控制位。 由接收帧的时隙中的功率控制位的累积能量与接收帧的时隙中累积的噪声能量值的比率给出的功率控制比特能量与噪声能量的比率是 并且当所提供的功率控制比特与噪声的比率是可接受的时，产生基于时隙中的业务符号比特的累积能量值与功率控制比特的累积能量值的比率的功率控制命令。

公开(公告)号：US07167683B2

公开(公告)日：2007-01-23

申请号：US10883867

申请日：2004-07-02

Applicant: Yue Chen

Inventor： Yue Chen

IPC: H04B17/00

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。

公开(公告)号：US07164672B1

公开(公告)日：2007-01-16

申请号：US10108863

申请日：2002-03-29

Applicant: Richard Henry Erving ,  Robert Raymond Miller, II

Inventor： Richard Henry Erving ,  Robert Raymond Miller, II

IPC: H04Q7/24

CPC classification number: H04L1/20 ,  H04L1/201

Abstract: A method for improving packetized speech transmitted over a wireless LAN is disclosed. Speech packets transmitted over the wireless LAN are monitored for errors. Any of the speech packets found to have errors are replaced with synthesized speech packets. The synthesized speech packets may be created from a vocal tract model generated from the received speech packets during periods of time when there are no errors.

Abstract translation: 公开了一种用于改善通过无线LAN发送的分组化语音的方法。 监视通过无线局域网传输的语音数据包的错误。 被发现有错误的任何一个语音分组被合成语音分组所取代。 可以在没有错误的时段期间从接收到的语音分组生成的声道模型创建合成语音分组。

公开(公告)号：US20060291593A1

公开(公告)日：2006-12-28

申请号：US11168642

申请日：2005-06-27

Applicant: Stephen Allpress ,  Carlo Luschi

Inventor： Stephen 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：US07127663B2

公开(公告)日：2006-10-24

申请号：US10650865

申请日：2003-08-28

Applicant: Mohammad J. Mohseni ,  Roland Rick ,  Faraz Faheem ,  Helena Deirdre O'Shea

Inventor： Mohammad J. Mohseni ,  Roland Rick ,  Faraz Faheem ,  Helena Deirdre O'Shea

IPC: H03M13/00

CPC classification number: H04L1/20 ,  H04B17/26 ,  H04B17/309 ,  H04B17/327 ,  H04B17/336 ,  H04L1/0054 ,  H04L1/0059 ,  H04L1/0061 ,  H04L1/0072 ,  H04L1/201

Abstract: A system and method for bad frame indication of a speech frame includes estimating a signal-to-noise ratio (SNR) and checking a cyclic redundancy code (CRC) value of the speech frame. When the speech frame fails CRC error detection or the SNR is below a pre-specified value, a bad frame indication (BFI) flag is set. When the speech frame passes CRC error detection and the SNR is above the pre-specified value, a receive signal quality metric of the speech frame is checked against a high threshold and, if need be, a low threshold. The BFI flag and the receive signal quality metric for the previous speech frame is checked when the current receive signal quality metric is between the high and low thresholds. The BFI flag is set according to the value of the SNR, the CRC value, the current and previous receive signal quality metrics, and the previous BFI flag.

Abstract translation: 用于语音帧的不良帧指示的系统和方法包括估计信噪比（SNR）和检查语音帧的循环冗余码（CRC）值。 当语音帧失败CRC错误检测或SNR低于预先设定的值时，设置不良帧指示（BFI）标志。 当语音帧通过CRC错误检测并且SNR高于预定值时，针对高阈值检查语音帧的接收信号质量度量，并且如果需要，则检查低阈值。 当当前接收信号质量度量在高阈值和低阈值之间时，检查先前语音帧的BFI标志和接收信号质量度量。 BFI标志根据SNR的值，CRC值，当前和先前的接收信号质量度量以及先前的BFI标志来设置。

公开(公告)号：US20060221707A1

公开(公告)日：2006-10-05

申请号：US11096201

申请日：2005-03-31

Applicant: Eric Leonard

Inventor： Eric Leonard

IPC: G11C16/04

CPC classification number: H04L1/20 ,  H04L1/201 ,  H04W52/44

Abstract: A method of adaptively determining a threshold for determining whether an error associated with a frame is an erasure or the result of a discontinuous transmission (DTX) uses a sample set of recently received frames yet avoids undesirable influences on the threshold that otherwise might be caused by the number of erasures in the sample set. A disclosed example uses a histogram-based approach and a simulated sort through the histogram to determine an appropriate threshold value. In a disclosed example the lesser of a bad frame threshold guideline value and a good frame threshold guideline value provide the threshold used to distinguish between a DTX and an erasure.

公开(公告)号：US20060150049A1

公开(公告)日：2006-07-06

申请号：US11321106

申请日：2005-12-28

Applicant: Zhi Zhang ,  Shouhua Liu

Inventor： Zhi Zhang ,  Shouhua Liu

IPC: H04L1/00 ,  H03M13/00 ,  G08C25/00 ,  G06F11/00 ,  G06F11/30

CPC classification number: H04L1/20 ,  G10L19/005 ,  G10L19/26 ,  H04L1/201

Abstract: A method of adjusting received speech volume in a handset is disclosed. The method comprises initialize a variable BFI_FACTOR as 1. Using the BFI (bad frame indicator) to determine whether a current received speech frame is erroneous or not. If the current received speech frame is not erroneous, determining if the BFI_FACTOR is less than one and if so incrementing the BFI_FACTOR. If the BFI indicates an erroneous frame, determining if the BFI_FACTOR is above a minimum value and if so decrementing the BFI_FACTOR. Finally, the current speech signal is multiplied by the BFI_FACTOR and played to the user.

Abstract translation: 公开了一种在手机中调整接收到的语音量的方法。 该方法包括将变量BFI_FACTOR初始化为1.使用BFI（坏帧指示符）来确定当前接收的语音帧是否是错误的。 如果当前接收到的语音帧不是错误的，则确定BFI_FACTOR是否小于1，如果增加了BFI_FACTOR。 如果BFI指示错误帧，则确定BFI_FACTOR是否高于最小值，如果BFI_FACTOR减小则确定。 最后，当前的语音信号乘以BFI_FACTOR并播放给用户。

公开(公告)号：US07043678B2

公开(公告)日：2006-05-09

申请号：US10106860

申请日：2002-03-22

Applicant: Pekka Kyosti ,  Mikko Saily

Inventor： Pekka Kyosti ,  Mikko Saily

IPC: H03M13/00

CPC classification number: H04L1/201 ,  H04L1/0054 ,  H04L1/007 ,  H04L1/20 ,  H04L2001/0098

Abstract: The present invention discloses a method and device for identifying unusable data blocks (bad frames) during communication in a network. The method comprises the steps of determining (S1) a classifier (CL_C) in a current data block, calculating (S3) a mean (M) of classifiers (CL—1 to CL_N) of a predetermined number (N) of data blocks, calculating (S4) a standard deviation (σ) of the classifiers (CL—1 to CL_N), calculating (S5) a threshold for identifying bad frames on the basis of the mean (M) and the standard deviation (σ) of the classifiers (CL—1 to CL_N), and distinguishing (S6) whether the current data block is usable or not on the basis of a comparison of the threshold (TH) and the current classifier (CL_C). By the method and the device, changing conditions of a radio channel can be taken into account quickly.

Abstract translation: 本发明公开了一种用于在网络通信期间识别不可用数据块（坏帧）的方法和装置。 该方法包括以下步骤：确定（S 1）当前数据块中的分类器（CL_C），计算（S 3）分类器（CL 1 - CL 1 - CL 1）的平均值（M） 计算（S 4）分类器的标准偏差（sigma）到CL_N的预定数量（N），计算（S 5）用于识别不良帧的阈值 分类器（CL 1→CL_N）的平均值（M）和标准偏差（sigma）的基础，并区分（S 6）当前数据块是否可用于 阈值（TH）和当前分类器（CL_C）的比较的基础。 通过该方法和设备，可以快速地考虑无线电信道的变化条件。

公开(公告)号：US20050050407A1

公开(公告)日：2005-03-03

申请号：US10938445

申请日：2004-09-09

Applicant: Khaled El-Maleh ,  Eddie-Lun Choy ,  Arasanipalai Ananthapadmanabhan ,  Andrew DeJaco ,  Pengjun Huang

Inventor： Khaled El-Maleh ,  Eddie-Lun Choy ,  Arasanipalai Ananthapadmanabhan ,  Andrew DeJaco ,  Pengjun Huang

IPC: H04B7/26 ,  H04L1/00 ,  H04L1/08 ,  H04L29/08 ,  H04B7/216 ,  G06F11/00

CPC classification number: H04L1/08 ,  H04L1/0046 ,  H04L1/201

Abstract: A system and method for detection of rate determination algorithm errors in variable rate communications system receivers. The disclosed embodiments prevent rate determination algorithm errors from causing audible artifacts such as screeches or beeps. The disclosed system and method detects frames with incorrectly determined data rates and performs frame erasure processing and/or memory state clean up to prevent propagation of distortion across multiple frames. Frames with incorrectly determined data rates are detected by checking illegal rate transitions, reserved bits, validating unused filter type bit combinations and analyzing relationships between fixed code-book gains and linear prediction coefficient gains.

Abstract translation: 一种用于在可变速率通信系统接收机中检测速率确定算法错误的系统和方法。 所公开的实施例防止速率确定算法错误引起可听见的伪影，例如吱吱声或嘟嘟声。 所公开的系统和方法检测具有错误确定的数据速率的帧，并执行帧擦除处理和/或存储器状态清理，以防止跨多个帧的失真传播。 通过检查非法速率转换，保留位，验证未使用的过滤器类型位组合以及分析固定代码簿增益和线性预测系数增益之间的关系来检测具有不正确确定的数据速率的帧。

公开(公告)号：US20050007986A1

公开(公告)日：2005-01-13

申请号：US10756957

申请日：2004-01-13

Applicant: Durga Malladi ,  Tao Chen ,  Yongbin Wei

Inventor： Durga Malladi ,  Tao Chen ,  Yongbin Wei

IPC: H04B7/00 ,  H04B7/216 ,  H04B17/00 ,  H04L1/00 ,  H04L12/56 ,  H04Q7/38

CPC classification number: H04L1/0039 ,  H04L1/201

Abstract: Systems and methods for evaluating packets and frames in a wireless communication system having multiple reverse-link channels including a spontaneous, burst oriented transmission channel and its corresponding rate indicator channel. One embodiment comprises a base station monitoring the rate indicator channel, decoding the rate indicator channel using a maximum likelihood decoder and detecting the presence of a packet on the rate indicator channel by comparing a likelihood with a threshold, and analyzing the validity of a frame on the burst oriented channel based on the presence and content of packets received on the rate indicator channel.

Abstract translation: 在具有多个反向链路信道的无线通信系统中评估分组和帧的系统和方法，包括自发的突发定向传输信道及其对应的速率指示信道。 一个实施例包括监视速率指示符信道的基站，使用最大似然解码器解码速率指示符信道，并通过将似然率与阈值进行比较来检测速率指示符信道上的分组的存在，以及分析帧的有效性 基于在速率指示符信道上接收到的分组的存在和内容的突发定向信道。