COMMUNICATIONS SYSTEM, RECEIVER, AND METHOD OF ESTIMATING RECEIVED SIGNAL QUALITY
    141.
    发明申请
    COMMUNICATIONS SYSTEM, RECEIVER, AND METHOD OF ESTIMATING RECEIVED SIGNAL QUALITY 审中-公开
    通信系统,接收器和估计接收信号质量的方法

    公开(公告)号:WO2006024700A1

    公开(公告)日:2006-03-09

    申请号:PCT/FI2005/050306

    申请日:2005-08-31

    Inventor: JUNCKER, Carsten

    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。

    ERASURE DETECTION AND POWER CONTROL FOR A TRANSPORT CHANNEL WITH UNKNOWN FORMAT IN A WIRELESS COMMUNICATION SYSTEM
    142.
    发明申请
    ERASURE DETECTION AND POWER CONTROL FOR A TRANSPORT CHANNEL WITH UNKNOWN FORMAT IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
    在无线通信系统中具有未知格式的传输信道的检测和功率控制

    公开(公告)号:WO2005125042A1

    公开(公告)日:2005-12-29

    申请号:PCT/US2005/019785

    申请日:2005-06-06

    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。

    BAD FRAME INDICATOR IN GSM MOBILE SYSTEM
    143.
    发明申请
    BAD FRAME INDICATOR IN GSM MOBILE SYSTEM 审中-公开
    GSM移动系统中的边框指示器

    公开(公告)号:WO2005025121A1

    公开(公告)日:2005-03-17

    申请号:PCT/US2004/027506

    申请日:2004-08-24

    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。

    APPARATUS AND METHOD OF CONTROLLING FORWARD LINK POWER WHEN IN DISCONTINUOUS TRANSMISSION MODE IN A MOBILE COMMUNICATION SYSTEM
    144.
    发明申请
    APPARATUS AND METHOD OF CONTROLLING FORWARD LINK POWER WHEN IN DISCONTINUOUS TRANSMISSION MODE IN A MOBILE COMMUNICATION SYSTEM 审中-公开
    移动通信系统中不连续发送模式控制前向链路功率的装置和方法

    公开(公告)号:WO01001610A1

    公开(公告)日:2001-01-04

    申请号:PCT/KR2000/000677

    申请日:2000-06-28

    Abstract: An apparatus and method of detecting whether data exists in a received signal while a mobile communication terminal is in discontinuous transmission mode is disclosed. 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: 公开了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。

    METHOD AND APPARATUS FOR SUPERVISING A POTENTIALLY GATED SIGNAL IN A WIRELESS COMMUNICATION SYSTEM
    145.
    发明申请
    METHOD AND APPARATUS FOR SUPERVISING A POTENTIALLY GATED SIGNAL IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
    在无线通信系统中监控潜在的门控信号的方法和装置

    公开(公告)号:WO00079711A1

    公开(公告)日:2000-12-28

    申请号:PCT/US2000/017753

    申请日:2000-06-22

    CPC classification number: H04W52/282 H04B17/382 H04L1/20 H04L1/201 H04W52/288

    Abstract: This is a method and apparatus for supervising a potentially gated channel in a wireless communication system. The mobile station (4) maintains a counter of consecutive bad frames, COUNT1 (224), and a counter of consecutive good frames, COUNT2 (226). COUNT1 (224) and COUNT2 (226) are set to zero at the beginning of a call. For each frame received, the mobile station (4) determines if it is a good, bad, or an empty frame. If the received frame is good, COUNT1 (224) is reset to zero and COUNT2 (226) is incremented by 1. If the received frame is bad, COUNT1 (224) is incremented by one and COUNT2 (226) is reset to zero. If the received frame is empty, COUNT1 (224) and COUNT2 (226) are unchanged. If COUNT1 (224) reaches a threshold value, TH1, the mobile station (4) shall disable its transmitter. Thereafter, if COUNT2 (226) reaches a threshold value, TH2, the mobile station (4) shall re-enable its transmitter.

    Abstract translation: 这是用于在无线通信系统中监视潜在门控信道的方法和装置。 移动站(4)维持连续的不良帧计数器COUNT1(224)和连续的良好帧的计数器COUNT2(226)。 在呼叫开始时,COUNT1(224)和COUNT2(226)被设置为零。 对于接收的每个帧,移动台(4)确定它是否是好的,坏的或空的帧。 如果接收帧良好,则COUNT1(224)被复位为零,并且COUNT2(226)增加1.如果接收到的帧是坏的,则COUNT1(224)增加1,并且COUNT2(226)被重置为零。 如果接收的帧为空,则COUNT1(224)和COUNT2(226)不变。 如果COUNT1(224)达到阈值TH1,移动台(4)将禁用其发射机。 此后,如果COUNT2(226)达到阈值TH2,移动台(4)将重新使能其发射机。

    BAD FRAME DETECTION
    146.
    发明申请
    BAD FRAME DETECTION 审中-公开
    边框检测

    公开(公告)号:WO1995030282A1

    公开(公告)日:1995-11-09

    申请号:PCT/SE1995000423

    申请日:1995-04-19

    Abstract: In a digital radio communication system in which information is transmitted and received in time slots and some bits of each received audio frame is interleaved over at least two time slots and other bits in each audio frame are non-interleaved, bad received audio frames are detected by detecting (110) possible bit errors in a channel encoded non-interleaved bit sequence in each received time slot. If bit errors have been detected in this bit sequence a bad received frame is indicated.

    Abstract translation: 在其中在时隙中发送和接收信息的数字无线电通信系统中,每个接收到的音频帧的某些比特在至少两个时隙上进行交织,并且每个音频帧中的其他比特被非交织,所以检测到接收不良的音频帧 通过在每个接收的时隙中检测(110)信道编码的非交织比特序列中的可能比特错误。 如果在该位序列中检测到位错误,则指示错误的接收帧。

    METHOD AND SYSTEM FOR THE DYNAMIC MODIFICATION OF CONTROL PARAMETERS IN A TRANSMITTER POWER CONTROL SYSTEM
    147.
    发明申请
    METHOD AND SYSTEM FOR THE DYNAMIC MODIFICATION OF CONTROL PARAMETERS IN A TRANSMITTER POWER CONTROL SYSTEM 审中-公开
    发射机功率控制系统中控制参数动态修改的方法和系统

    公开(公告)号:WO1994019876A1

    公开(公告)日:1994-09-01

    申请号:PCT/US1994001150

    申请日:1994-02-01

    Abstract: In a communication system in which direct sequence spread spectrum modulation techniques are used, interference is generated in communications by remote stations since the communications share the same frequency spectrum. In order to increase system capacity the power level of the remote station transmitters are controlled by the local station. A setpoint in generated at the local station by a power control processor (118) and compared by a comparator (120) with the remote station signal strength measured at the local station by a power averager (114). The result of this comparison is used to generate power level adjustment commands by a command generator (122) which are transmitted to the remote station. The remote station is responsive to the power level adjustment commands for increasing or decreasing remote station transmitter power. In a spread spectrum communication system in which data is encoded at variable data rates, the local station determines via a rate determination processor (116) the rate at which received data was encoded by the transmitting remote station. The data is decoded by decoder (112) at each possible rate with error metrics generated that are representative of the quality of the data decoded at each rate. A rate decision algorithm is used by processor (116) to evaluate the error metrics and make a decision on the rate at which the data was transmitted. A pattern match of rate decisions is used by processor (118) to modify a setpoint so as to closely control the transmitting power of the remote station as a function of the quality of the received data.

    Abstract translation: 在使用直接序列扩频调制技术的通信系统中,由于通信共享相同的频谱,所以在远程站的通信中产生干扰。 为了提高系统容量,远程站发射机的功率电平由本地站控制。 由本地站由功率控制处理器(118)产生并由比较器(120)与由功率平均器(114)在本地站测量的远程站信号强度进行比较的设定点。 该比较的结果被用于通过发送到远程站的命令发生器(122)产生功率电平调整命令。 远程站响应于用于增加或减少远程站发射机功率的功率电平调整命令。 在数据以可变数据速率编码的扩展频谱通信系统中,本地站经由速率确定处理器(116)确定接收的数据由发送的远程站编码的速率。 解码器(112)以每个可能的速率对数据进行解码,其中生成的误差度量代表以每个速率解码的数据的质量。 处理器(116)使用速率判定算法来评估误差量度并对数据发送的速率作出决定。 处理器(118)使用速率决定的模式匹配来修改设定点,以便根据接收到的数据的质量密切地控制远程站的发射功率。

    ERROR DETECTOR CIRCUIT FOR RECEIVER OPERATIVE TO RECEIVE DISCRETELY-ENCODED SIGNALS
    148.
    发明申请
    ERROR DETECTOR CIRCUIT FOR RECEIVER OPERATIVE TO RECEIVE DISCRETELY-ENCODED SIGNALS 审中-公开
    用于接收器操作的错误检测器电路接收到已编码的信号

    公开(公告)号:WO1994017472A1

    公开(公告)日:1994-08-04

    申请号:PCT/US1993012568

    申请日:1993-12-23

    Applicant: MOTOROLA INC.

    Abstract: An error detector circuit (300), and an associated method, is disclosed for a discrete receiver, the error detector circuit (300) indicates bad frames of binary information signals which contain distorted bits of data in numbers so great as to prevent a convolutional decoder (312) from generating, accurately, a decoded signal. When bit errors are detected in numbers beyond a first preselected value of signal quality of a received signal combined with the detected number of bits errors forming a signal beyond a second preselected value, a bad frame is detected.

    Abstract translation: 公开了一种用于离散接收机的误差检测器电路(300)和相关联的方法,误差检测器电路(300)指示二进制信息信号的不良帧,其包含数字的失真比特数,以致于防止卷积解码器 (312)精确地产生解码信号。 当检测到数字超过接收信号的信号质量的第一预选值的比特错误与检测到的比特错误组合,形成超过第二预选值的信号时,检测到坏帧。

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