公开(公告)号：WO02067499A8

公开(公告)日：2004-05-21

申请号：PCT/SE0200299

申请日：2002-02-21

Applicant: ERICSSON TELEFON AB L M ,  LENNESTAAL HAAKAN ,  SUNDQVIST JIM ,  ARNGREN TOMMY

Inventor： LENNESTAAL HAAKAN ,  SUNDQVIST JIM ,  ARNGREN TOMMY

IPC: H04L12/18 ,  H04L29/06 ,  H04L29/08 ,  H04L12/16 ,  H04Q11/04

CPC classification number: H04L63/0428 ,  H04L12/1877 ,  H04L63/061 ,  H04L63/065 ,  H04L67/14 ,  H04L69/329

Abstract: An apparatus and method for communicating electronic data via a network infrastructure (101) having a unicast mechanism and a multicast mechanism. Said apparatus comprises a server (100), which contains electronic data and is capable of using said unicast and multicast mechanisms for communicating said electronic data to one or more clients (102), the apparatus comprises means (103) adapted to make a decision, taking into account a predetermined set of parameters, whether said server (100) shall use said unicast mechanism or said multicast mechanism for communicating said electronic data to said clients (102) and said server (100) is arranged to communicate said electronic data to said clients (102) in accordance with said decision.

Abstract translation: 一种用于经由具有单播机制和多播机制的网络基础设施（101）传送电子数据的装置和方法。 所述设备包括服务器（100），其包含电子数据并且能够使用所述单播和多播机制将所述电子数据传送到一个或多个客户端（102），所述设备包括适于作出决定的装置（103） 考虑到预定的一组参数，所述服务器（100）是否应使用所述单播机制或所述多播机制将所述电子数据传送到所述客户机（102）和所述服务器（100），以将所述电子数据传送到所述 客户（102）按照上述决定。

公开(公告)号：WO0159986A3

公开(公告)日：2002-01-24

申请号：PCT/SE0100258

申请日：2001-02-09

Applicant: ERICSSON TELEFON AB L M

Inventor： SUNDQVIST JIM ,  HANNU HANS ,  TIMUS BOGDAN ,  NORRGAARD JOAKIM ,  SCHELEN OLOV

IPC: H04L12/56 ,  H04L29/06 ,  H04W28/26 ,  H04Q7/38

CPC classification number: H04W28/26 ,  H04L29/06 ,  H04L47/10 ,  H04L47/14 ,  H04L47/15 ,  H04L47/70 ,  H04L47/724 ,  H04L47/781 ,  H04L47/785 ,  H04L47/805 ,  H04L47/822 ,  H04L47/824 ,  H04L47/826 ,  H04L69/169

Abstract: Methods and apparatus are provided for reserving resources in a wireline network from a wireless network. A resource reservation request is made by a service client to a service broker (SB). The service broker (SB) contacts a bandwidth broker (BB) to determine the available resources in the wireline network. The service broker (SB) also contacts a geographical domain server (GDS) for information related to wireless access for the requested reservation. Using information provided by the geographical domain server (GDS), the service broker (SB) contacts a radio bearer broker (RBB) to determine the resources available in a particular wireless network. Based upon the information provided by bandwidth brokers (BB) and radio bearer brokers (RBB), the service client can reserve the requested resources.

Abstract translation: 提供了从无线网络在有线网络中预留资源的方法和装置。 服务客户端向服务代理（SB）发送资源预留请求。 服务代理（SB）联系带宽代理（BB）以确定有线网络中的可用资源。 服务代理（SB）还联系地理域服务器（GDS），以获得与所请求的预留的无线接入有关的信息。 使用由地理域服务器（GDS）提供的信息，服务代理（SB）联系无线电承载代理（RBB）以确定特定无线网络中可用的资源。 根据带宽经纪人（BB）和无线承载经纪人（RBB）提供的信息，服务客户端可以预留所请求的资源。

公开(公告)号：WO0118790A8

公开(公告)日：2002-02-28

申请号：PCT/SE0001687

申请日：2000-09-01

Applicant: ERICSSON TELEFON AB L M

Inventor： SUNDQVIST JIM ,  FRANKKILA TOMAS ,  NOHLGREN ANDERS

IPC: H04J3/06 ,  G10L13/00

CPC classification number: H04J3/0632

Abstract: The present invention relates to methods for improving speech quality in e.g. an IP-telephony system. The invention reduces audio artefacts being due to overrun or underrun in a playout buffer caused by the sampling rates at a sending and receiving side not being at the same rate. The inventive solution modifies an LPC-residual on a sample-by-sample basis. The LPC-residual block comprising N samples is converted to a block comprising N+1 or N-1 samples. A sample rate controller 400 decides whether samples should be added to or removed from the LPC-residual. The exact position where to add respective remove samples is either chosen arbitrarily or found by searching for low energy segments in the LPC-residual. A speech synthesiser module 430 then reproduces the speech. By using the proposed sample rate conversion method the playout buffer 440 can be continuously controlled. Furthermore, since the method works on a sample-by-sample basis the buffer can be kept to a minimum and hence no extra delay is introduced.

Abstract translation: 本发明涉及用于提高语音质量的方法。 一个IP电话系统。 本发明减少了由于发送和接收侧的采样速率不是相同速率而导致的播放缓冲器中的超载或欠载引起的音频伪影。 本发明的解决方案在逐个样本的基础上修改LPC残差。 包括N个样本的LPC残差块被转换为包括N + 1或N-1个采样的块。 采样率控制器400确定是否应该将样本添加到LPC残差中或从LPC残差中去除。 添加相应删除样本的确切位置是任意选择的或通过搜索LPC残差中的低能量段来找到。 语音合成器模块430然后再现语音。 通过使用所提出的采样率转换方法，可以连续地控制播出缓冲器440。 此外，由于该方法在逐个采样的基础上工作，因此缓冲器可以保持最小，因此不会引入额外的延迟。

公开(公告)号：WO9959282A3

公开(公告)日：2000-02-03

申请号：PCT/SE9900689

申请日：1999-04-28

Applicant: ERICSSON TELEFON AB L M

Inventor： EKUDDEN ERIK ,  SVENSSON TOMAS ,  SUNDQVIST JIM

IPC: G10L19/12 ,  G10L19/00 ,  H04L1/00 ,  H04L12/56 ,  H04L12/64 ,  H04L1/22

CPC classification number: H04L12/6418 ,  H04L2012/6481

Abstract: A decoder improves delayed packet concealment in a packet network by using two decoder sections. A first decoder section (30) bases its decoding during the concealment phase on erroneous filter states and a set of speech parameters, whereas a second decoder section bases its decoding on saved (36) and updated filter states and the same speech parameters. The outputs of the two decoder sections are thereafter combined (34) to form the final speech signal. This decoding strategy produces a speech signal with smooth transitions from delayed to non-delayed packets and uses information from the most recent packets for speech generation.

Abstract translation: 解码器通过使用两个解码器部分来改进分组网络中的延迟分组隐藏。 第一解码器部分（30）在隐藏阶段的解码基于错误滤波器状态和一组语音参数，而第二解码器部分基于其保存的（36）和更新的滤波器状态和相同语音参数的解码。 此后，组合两个解码器部分的输出（34）以形成最终语音信号。 该解码策略产生具有从延迟到非延迟分组的平滑过渡的语音信号，并且使用来自最新分组的信息用于语音产生。

公开(公告)号：WO0124443A3

公开(公告)日：2001-12-06

申请号：PCT/SE0001572

申请日：2000-08-11

Applicant: ERICSSON TELEFON AB L M

Inventor： SUNDQVIST JIM ,  HARASZTI ZSOLT ,  SVANBRO KRISTER ,  JONSSON LARS-ERIK ,  AYADURAI VICKNESAN

IPC: H04L12/56 ,  H04L29/06

CPC classification number: H04L69/04 ,  H04L29/06 ,  H04L69/22

Abstract: In packet communication paths (18) that include header compression, header fields of packets to be communicated are altered. The alteration of the header fields (14) does not disturb their functionality, and its transparent to the header compression scheme of the packet communication path (18). The altered header fields (14) are provided for compression by the header compression scheme, resulting in improved performance of the header compression scheme. Performance improvements can also be achieved in packet communication paths (18) that do not use header compression, by violating the integrity of header fields in packets to be transmitted over the packet communication path (18).

Abstract translation: 在包括报头压缩的分组通信路径（18）中，改变要传送的分组的报头字段。 头字段（14）的改变不会干扰它们的功能，并且它对分组通信路径（18）的报头压缩方案是透明的。 改变的报头字段（14）被提供用于通过报头压缩方案进行压缩，从而提高报头压缩方案的性能。 通过违反要通过分组通信路径（18）发送的分组中的报头字段的完整性，也可以在不使用报头压缩的分组通信路径（18）中实现性能改进。

公开(公告)号：WO0051308A2

公开(公告)日：2000-08-31

申请号：PCT/SE0000369

申请日：2000-02-25

Applicant: ERICSSON TELEFON AB L M

Inventor： WESTBERG LARS ,  SVANBRO KRISTER ,  SUNDQVIST JIM

IPC: H04L1/00 ,  H04L12/56 ,  H04L29/06

CPC classification number: H04L29/06 ,  H04L69/04 ,  H04L69/16 ,  H04L69/161 ,  H04L69/22

Abstract: The soft state of a header compression scheme in a communication system carrying packet traffic including a real time communication signal can be updated (63) during periods of communication signal inactivity (62), during which there is no need to transmit the communication signal. The header compression soft state can also be updated by stealing bits (83, 84) from the communication signal to carry the header update information (73). If the communication signal includes source encoded data, the header compression soft state can be updated selectively (126) based on the bit rate (122, 124) of a codec that produced the source encoded data.

Abstract translation: 在通信系统中承载包括实时通信信号的分组业务的报头压缩方案的软状态可以在通信信号不活动期间（62）更新（63），在此期间不需要发送通信信号。 报头压缩软状态也可以通过从通信信号中窃取比特（83,84）以携带报头更新信息（73）来更新。 如果通信信号包括源编码数据，则可以基于产生源编码数据的编解码器的比特率（122,124）来选择性地更新报头压缩软状态（126）。

公开(公告)号：DE60143124D1

公开(公告)日：2010-11-04

申请号：DE60143124

申请日：2001-12-14

Applicant: ERICSSON TELEFON AB L M

Inventor： SUNDQVIST JIM ,  JANSSON FREDRIK

IPC: G01L19/00 ,  G10L19/24

公开(公告)号：ES2340835T3

公开(公告)日：2010-06-10

申请号：ES00955210

申请日：2000-08-11

Applicant: ERICSSON TELEFON AB L M

Inventor： SUNDQVIST JIM ,  HARASZTI ZSOLT ,  SVANBRO KRISTER ,  JONSSON LARS-ERIK ,  AYADURAI VICKNESAN

IPC: H04L12/00 ,  H04L29/06 ,  H04L12/56 ,  H04L12/801

Abstract: Un aparato para mejorar el rendimiento de las comunicaciones por paquetes sobre un camino de comunicación por paquetes (18), que comprende una entrada (11) para recibir los campos de cabeceras de paquetes para ser comunicados sobre el camino de comunicación del paquete, dicho aparato caracterizado por: un procesador del campo (26) acoplado a dicha entrada para violar la integridad de uno de dichos campos de la cabecera para producir un campo de la cabecera violada (25) seleccionando, en base a una comparación umbral, entre un valor de dicho campo de la cabecera y un valor previo de un campo de la cabecera recibido previamente o entre un valor de dicho campo de la cabecera recibida y un valor de cero, y una salida (14) acoplada a dicho procesador del campo (26) para poner a la salida dicho campo de la cabecera violada con el valor seleccionado para el camino de comunicación del paquete.

公开(公告)号：AT460790T

公开(公告)日：2010-03-15

申请号：AT00955210

申请日：2000-08-11

Applicant: ERICSSON TELEFON AB L M

Inventor： SUNDQVIST JIM ,  HARASZTI ZSOLT ,  SVANBRO KRISTER ,  JONSSON LARS-ERIK ,  AYADURAI VICKNESAN

IPC: H04L12/00 ,  H04L29/06 ,  H04L12/56 ,  H04L12/801

Abstract: In packet communication paths that include header compression, header fields of packets to be communicated are altered. The alteration of the header fields does not disturb their functionality, and is transparent to the header compression scheme of the packet communication path. The altered header fields are provided for compression by the header compression scheme, resulting in improved performance of the header compression scheme. Performance improvements can also be achieved in packet communication paths that do not use header compression, by violating the integrity of header fields in packets to be transmitted over the packet communication path.

公开(公告)号：AT414315T

公开(公告)日：2008-11-15

申请号：AT01932448

申请日：2001-05-10

Applicant: ERICSSON TELEFON AB L M

Inventor： SVEDBERG JONAS ,  SUNDQVIST JIM ,  UVLIDEN ANDERS ,  NOHLGREN ANDERS ,  WESTERLUND MAGNUS

IPC: G10L19/00 ,  H03M7/36 ,  H04L1/00

Abstract: An improved forward error correction (FEC) technique for coding speech data provides an encoder module which primary-encodes an input speech signal using a primary synthesis model to produce primary-encoded data, and redundant-encodes the input speech signal using a redundant synthesis model to produce redundant-encoded data. A packetizer combines the primary-encoded data and the redundant-encoded data into a series of packets and transmits the packets over a packet-based network, such as an Internet Protocol (IP) network. A decoding module primary-decodes the packets using the primary synthesis model, and redundant-decodes the packets using the redundant synthesis model. The technique provides interaction between the primary synthesis model and the redundant synthesis model during and after decoding to improve the quality of a synthesized output speech signal. Such "interaction," for instance, may take the form of updating states in one model using the other model.