Power control method and system in a TDMA radio communication system
    1.
    发明授权
    Power control method and system in a TDMA radio communication system 失效
    TDMA无线电通信系统中的功率控制方法和系统

    公开(公告)号:US5982766A

    公开(公告)日:1999-11-09

    申请号:US845466

    申请日:1997-04-25

    IPC分类号: H04B7/005 H04L1/00 H04B7/212

    摘要: A power control system in a TDMA radio communication system has traffic channels which are associated with a set of speech/channel encoding modes. Each mode has a different mix of speech encoder bit rate and data protection bit rate but the same total available gross bit rate. The transmitter includes a power control unit that replaces a mode allocated to a channel by another mode having either a higher or a lower data protection bit rate and either a lower or a higher speech encoder bit rate if the sound to be encoded requires either a lower or a higher speech encoding bit rate. The power control unit also controls a power adjustment unit that either reduces or increases the output power of the transmitter to a lower or a higher level such that an estimated decoded speech quality measure at the receiver is substantially constant.

    摘要翻译: TDMA无线通信系统中的功率控制系统具有与一组语音/信道编码模式相关联的业务信道。 每个模式具有不同的语音编码器比特率和数据保护比特率的混合,但总可用总比特率相同。 发射机包括功率控制单元,如果要编码的声音需要较低或更低的数据保护比特率,则替换分配给信道的模式,或者具有较低或较低的数据保护比特率, 或更高的语音编码比特率。 功率控制单元还控制功率调节单元,其将发射机的输出功率降低或增加到较低或更高的电平,使得接收机处的估计解码语音质量测量基本上是恒定的。

    Efficient in-band signaling for discontinuous transmission and configuration changes in adaptive multi-rate communications systems
    2.
    发明授权
    Efficient in-band signaling for discontinuous transmission and configuration changes in adaptive multi-rate communications systems 有权
    在自适应多速率通信系统中用于不连续传输和配置变化的高效带内信令

    公开(公告)号:US07500018B2

    公开(公告)日:2009-03-03

    申请号:US10676342

    申请日:2003-10-01

    IPC分类号: G06F15/173 H04J3/16

    摘要: Techniques for discontinuous transmission (DTX) and fast in-band signaling of configuration changes and protocol messages in speech communications systems provide cost efficiency in terms of radio transmission capacity, in terms of fixed line transmission, and in terms of implementation effort. An exemplary method for performing discontinuous transmission (DTX) in a communications system in which source data is interleaved for transmission from a first component in the system to a second component in the system includes the steps of detecting periods of source data inactivity, and transmitting silence descriptor (SID) frames from the first to the second component during the periods of source data inactivity, certain of the transmitted SID frames being interleaved using a different interleaving algorithm as compared to that used for source data. For example, the source data can be block diagonally interleaved, and certain of the SID frames can be block interleaved. An exemplary method for effecting configuration changes in a communications system includes the step of transmitting an escape frame in place of a speech data frame, the escape frame including a gross bit pattern to distinguish the escape frame from speech data frames and conveying a configuration change indication. The escape frame can further include a data field to indicate a particular configuration change to be made. For example, where the communications system is an AMR system, an escape frame can be used to change an active codec mode set. Alternatively, an escape frame can be used to change a phase of codec information.

    摘要翻译: 用于不连续传输(DTX)的技术和语音通信系统中的配置改变和协议消息的快速带内信令在无线电传输容量方面,在固定线路传输方面以及在实施方面方面提供了成本效率。 在其中源数据被交织用于从系统中的第一组件传输到系统中的第二组件的通信系统中的用于执行不连续传输(DTX)的示例性方法包括以下步骤:检测源数据不活动的周期,以及发送静默 在源数据不活动期间,从第一分量到第二分量的描述符(SID)帧,使用与用于源数据的交织算法相比较,使用不同的交织算法来交织某些发送的SID帧。 例如,源数据可以是对角交错的块,并且某些SID帧可以被块交织。 用于实现通信系统中的配置改变的示例性方法包括发送转义帧代替语音数据帧的步骤,逃逸帧包括总比特模式以区分逃生帧与语音数据帧,并传送配置改变指示 。 逃生框架还可以包括用于指示要进行的特定配置更改的数据字段。 例如,在通信系统是AMR系统的情况下,可以使用转义帧来改变活动的编解码器模式集合。 或者,可以使用转义帧来改变编解码器信息的相位。

    Power control in mobile communication systems
    3.
    发明授权
    Power control in mobile communication systems 有权
    移动通信系统中的功率控制

    公开(公告)号:US07328038B2

    公开(公告)日:2008-02-05

    申请号:US10509825

    申请日:2003-04-02

    IPC分类号: H04B7/00

    摘要: In a radio communication system in a mobile to mobile call with one good (AMR102) and bad (AMR515) radio link, the good radio (AMR102) link is forced by the poor (AMR515) link to use a more robust AMR coded mode (AMR515) and thereby using excessive power (232). A capacity loss in such system is avoided by adjusting the power level (212) for the connection with the good link (AMR102).

    摘要翻译: 在具有一个良好(AMR 102)和不良(AMR 515)无线电链路的移动到移动呼叫中的无线电通信系统中,良好无线电(AMR 102)链路被穷人(AMR 515)链路强制使用更加鲁棒 AMR编码模式(AMR 515),从而使用过大的功率(232)。 通过调整与良好链路(AMR 102)的连接的功率电平(212)来避免在该系统中的容量损失。

    Method and device for avoiding interruptions in voice transmissions
    5.
    发明授权
    Method and device for avoiding interruptions in voice transmissions 有权
    用于避免语音传输中断的方法和设备

    公开(公告)号:US06466789B1

    公开(公告)日:2002-10-15

    申请号:US09467623

    申请日:1999-12-20

    IPC分类号: H04Q738

    CPC分类号: H04W36/18

    摘要: The invention relates to a method and a device for avoiding interruptions in voice transmission in a cellular communication system. Voice data are thereby divided into segments, and the segments are associated with transmission quanta, so-called bursts. A number of segments is coded in a first transmission mode and is made available for transmission. Said first transmission mode is, for instance, for a transmission at full rate. Additional segments, which follow, are subsequently coded in a second transmission mode and are made available for transmission. The second transmission mode is, for instance, for transmission at half rate. Through the change from a first transmission mode to a second transmission mode, parts of the associated transmission quanta remain unused by applying the so-called interleaving. Said unused transmission quanta are used for performing additional functions, such as initiating a hand-over or FACCH signaling.

    摘要翻译: 本发明涉及一种用于避免蜂窝通信系统中语音传输中断的方法和设备。 因此,语音数据被划分成段,并且这些段与传输量子(所谓的突发)相关联。 多个段以第一传输模式被编码并且可用于传输。 所述第一传输模式例如是全速传输。 随后的附加段随后以第二传输模式进行编码,并使其可用于传输。 例如,第二传输模式是以半速率传输。 通过从第一传输模式向第二传输模式的改变,通过应用所谓的交织,相关传输量子的部分保持未使用。 所述未使用的传输量子用于执行附加功能,例如启动切换或FACCH信令。

    Postfilter for layered codecs
    6.
    发明授权
    Postfilter for layered codecs 有权
    用于分层编解码器的后过滤器

    公开(公告)号:US08571852B2

    公开(公告)日:2013-10-29

    申请号:US12529652

    申请日:2007-12-14

    申请人: Stefan Bruhn

    发明人: Stefan Bruhn

    IPC分类号: G10L19/00

    CPC分类号: G10L19/26

    摘要: A scalable decoder device (50) for signals representing audio comprises a primary decoder (21) connected to an input (40). The primary decoder (21) is arranged to provide a primary decoded signal (23) based on received parameters (4). A primary postfilter (31) is connected to the primary decoder (23) to provide a primary postfiltered signal (32). A secondary enhancement decoder (45) is connected to the input (40) and arranged to provide a secondary decoded enhancement signal (44). The device further comprises a combiner arrangement (55), arranged for combining the primary postfiltered signal (32) and a signal (53) based on the secondary decoded enhancement signal (44) into an output signal (6) to be provided at an output (6). The combining is made with an adaptable strength relation between contributions from the two signals. A method for decoding coded signals representing audio operates in analogy with the scalable decoder device (50).

    摘要翻译: 用于表示音频的信号的可扩展解码器装置(50)包括连接到输入端(40)的主解码器(21)。 主解码器(21)被布置为基于接收的参数(4)提供主解码信号(23)。 初级后置滤波器(31)连接到主解码器(23)以提供初级后置滤波信号(32)。 辅助增强解码器(45)连接到输入端(40)并被布置成提供辅助解码增强信号(44)。 该装置还包括组合器装置(55),其被布置为将基于次级解码增强信号(44)的原始后置滤波信号(32)和信号(53)组合成输出信号(6),以在输出端 (6)。 组合是由两个信号的贡献之间的适应强度关系构成的。 用于对表示音频的编码信号进行解码的方法类似于可伸缩解码器装置(50)进行操作。

    Encoder Adaption in Teleconferencing System
    7.
    发明申请
    Encoder Adaption in Teleconferencing System 有权
    电话会议系统中的编码器适配

    公开(公告)号:US20130066641A1

    公开(公告)日:2013-03-14

    申请号:US13698078

    申请日:2010-05-18

    申请人: Stefan Bruhn

    发明人: Stefan Bruhn

    IPC分类号: G10L19/00

    CPC分类号: H04M3/569

    摘要: The invention relates to a method and an arrangement for encoding of signals in teleconferencing. The method involves receiving (502) signals from a plurality of nodes participating in a teleconference and analyzing (504) said signals. The method further involves appointing (506) one of the received signals as being a dominant signal and adapting (508) an encoder based on information related to the dominant signal. At least two of the received signals are mixed and then encoded (512), using the adapted encoder. The encoded mixed signal is then provided (514) to at least one of the nodes participating in the teleconference.

    摘要翻译: 本发明涉及一种用于在电话会议中对信号进行编码的方法和装置。 该方法涉及从参与电话会议的多个节点接收(502)信号并分析(504)所述信号。 该方法还包括将(506)接收的信号之一指定为主要信号,并且基于与主导信号相关的信息来适配(508)编码器。 使用适配的编码器将至少两个接收的信号混合然后进行编码(512)。 然后,将编码的混合信号(514)提供给参与电话会议的节点中的至少一个节点。

    Source Code Adaption Based on Communication Link Quality and Source Coding Delay
    8.
    发明申请
    Source Code Adaption Based on Communication Link Quality and Source Coding Delay 有权
    基于通信链路质量和源码编码延迟的源代码自适应

    公开(公告)号:US20120323568A1

    公开(公告)日:2012-12-20

    申请号:US13582122

    申请日:2010-03-02

    申请人: Stefan Bruhn

    发明人: Stefan Bruhn

    IPC分类号: G10L19/00

    摘要: Method and arrangement in a network node for adapting a property of source coding to the quality of a communication link in packet switched conversational services in a communication system. The method comprises obtaining (404) information related to the quality of a communication link. The method further comprises selecting (406) a source coding mode with an associated source coding delay, based on the obtained information and the associated source coding delay. The selected source coding mode is selected from a set of at least two source coding modes associated with different source coding delays, and is to be used when source coding voice data to be transmitted over the communication link.

    摘要翻译: 网络节点中的方法和布置,用于使源编码的属性适应通信系统中的分组交换对话服务中的通信链路的质量。 该方法包括获得(404)与通信链路的质量有关的信息。 该方法还包括基于获得的信息和相关联的源编码延迟来选择(406)具有相关源编码延迟的源编码模式(406)。 选择的源编码模式从与不同源编码延迟相关联的至少两个源编码模式的集合中选择,并且将在通过通信链路发送源编码语音数据时使用。

    MULTI-MODE SCHEME FOR IMPROVED CODING OF AUDIO
    10.
    发明申请
    MULTI-MODE SCHEME FOR IMPROVED CODING OF AUDIO 有权
    用于改进音频编码的多模式方案

    公开(公告)号:US20110153336A1

    公开(公告)日:2011-06-23

    申请号:US12996959

    申请日:2008-06-24

    IPC分类号: G10L19/00

    CPC分类号: G10L19/22

    摘要: The present invention relates to an improved scheme for coding of audio. In particular, the present invention relates to an encoder device and a method for coding an input signal in an encoder system. The method comprises applying a first mode to the input signal to form a first output and applying a second mode to the input signal to form a second output. A first processed output is then formed from at least a part of the first output, and a second processed output is formed from at least a part of the second output. Forming a second processed output comprises estimating a part of the input signal from at least a part of the second output. Then, an optimum mode is determined based on the firstprocessedoutput and the secondprocessedoutput, and the output according to the optimum mode is selected.

    摘要翻译: 本发明涉及用于音频编码的改进方案。 具体而言,本发明涉及编码器装置和编码器系统中的输入信号编码方法。 该方法包括将第一模式应用于输入信号以形成第一输出并将第二模式应用于输入信号以形成第二输出。 然后从第一输出的至少一部分形成第一处理输出,并且从第二输出的至少一部分形成第二处理输出。 形成第二处理输出包括从第二输出的至少一部分估计输入信号的一部分。 然后,基于第一处理输出和第二处理输出确定最佳模式,并且选择根据最佳模式的输出。