METHOD AND APPARATUS FOR TRANSFERRING IDENTIFIER INFORMATION IN A TELECOMMUNICATIONS SYSTEM
    1.
    发明授权
    METHOD AND APPARATUS FOR TRANSFERRING IDENTIFIER INFORMATION IN A TELECOMMUNICATIONS SYSTEM 有权
    方法和装置用于转移标识信息电信系统

    公开(公告)号:EP1064819B1

    公开(公告)日:2008-10-15

    申请号:EP99914845.5

    申请日:1999-03-19

    IPC分类号: H04Q11/04

    摘要: In a wireless telecommunications network, transporting identification information, such as access point identifier (AP ID) and wireless terminal identifier (WT ID) information, in each uplink and each downlink protocol data unit (PDU) being transmitted between a sender and a receiver, without increasing bandwidth requirements. This is accomplished by modifying each PDU as a function of a first identification vector, prior to transmission, wherein the first identification vector reflects, for example, the AP ID and the corresponding WT ID. At the receiver, the PDU is re-modified as a function of a second identification vector, wherein the second identification vector reflects an expected AP ID and WT ID. If the receiver is the intended recipient of the PDU, the first and second identification vectors will be the same, and the process of re-modifying the PDU merely serves to restore the original value of the PDU. The receiver can detect whether the original value of the PDU has been restored through a data integrity check, for example, one which employs a cyclic redundancy code (CRC). The result can then be used to determine whether the receiver is, in fact, the intended receiver, and whether the receiver should decode the PDU or discard it.

    Mobile communications system and trascoding unit for saving transmission capacity on a packet connection
    2.
    发明授权
    Mobile communications system and trascoding unit for saving transmission capacity on a packet connection 有权
    移动通信系统和代码转换单元,用于在分组连接节省Übertragüngskapazität

    公开(公告)号:EP1025729B1

    公开(公告)日:2005-03-02

    申请号:EP98949015.6

    申请日:1998-10-16

    申请人: Nokia Corporation

    IPC分类号: H04Q7/30

    摘要: The present invention relates to a mobile communication system which comprises a base station (BTS1) having a data transmission connection to a mobile services switching centre (MSC) through a transcoder unit (TRCU). In order to improve the data transmission connection between the base station and the transcoder unit, the data transmission connection in question is partly composed of a packet-switched data transmission connection (4) to which a converter means (3) is arranged comprising means for converting the TRAU frame received into a packet to be transmitted over the packet-switched connection (4), the conversion including the removal of bits included in the TRAU frame and not needed on the packet-switched connection (4).

    Speech transmitting device and method over a packet network
    4.
    发明公开
    Speech transmitting device and method over a packet network 审中-公开
    Sprachübertragungsverfahrenund-Vorrichtungübereinem Paketnetzwerk

    公开(公告)号:EP0986283A2

    公开(公告)日:2000-03-15

    申请号:EP99116233.0

    申请日:1999-08-17

    发明人: Fushimi, Wataru

    IPC分类号: H04Q11/04 H04L12/64

    摘要: A speech transmitting device includes a signal processing unit for carrying out plural types of speech signal processes by using a speech signal in a received packet, an alignment state detecting unit for detecting an alignment state of the received packet, and a process selecting unit for selecting a speech signal process which corresponds to the alignment state being detected by the alignment state detecting means, based on a selection reference used to select the speech signal process in correspondence to the alignment state of the received packet, and then outputting a result which is processed by the signal processing means according to the selected speech signal process.

    摘要翻译: 一种语音发送装置,包括:信号处理单元,用于通过使用接收到的分组中的语音信号来执行多种类型的语音信号处理;对准状态检测单元,用于检测接收到的分组的对准状态;以及处理选择单元,用于选择 基于用于根据接收到的分组的对准状态选择语音信号处理的选择基准,对准由对准状态检测单元检测到的对准状态的语音信号处理,然后输出被处理的结果 通过信号处理装置根据所选择的语音信号处理。

    Data modulation method, and related modulator and demodulator devices
    5.
    发明公开
    Data modulation method, and related modulator and demodulator devices 失效
    Datenmodulationsverfahren unddazugehörigeModulation- und Demodulationseinrichtungen

    公开(公告)号:EP0961515A1

    公开(公告)日:1999-12-01

    申请号:EP98401298.9

    申请日:1998-05-29

    申请人: ALCATEL

    IPC分类号: H04Q11/04

    摘要: In a single-carrier or multi-carrier modulator (MOD), data symbols are modulated on at least one carrier in accordance with at least one constellation scheme. Idle data symbols are replaced by null data symbols and the latter null data symbols are associated with a low power constellation point of the at least one constellation scheme. The constellation points associated with the data symbols are randomly transformed into constellation points of equal power. In this way, idle data symbols are transferred with minimised power and sufficiently randomised to allow equaliser training and/or tracking at the receiving demodulator (DMOD) and to avoid high crest factors in multi-carrier systems.

    摘要翻译: 在单载波或多载波调制器(MOD)中,数据符号根据至少一个星座图方案在至少一个载波上进行调制。 空闲数据符号被空数据符号替换,并且后面的空数据符号与至少一个星座图方案的低功率星座点相关联。 与数据符号相关联的星座点被随机地变换成等功率的星座点。 以这种方式,空闲数据符号以最小的功率被传送并且被充分随机化以允许接收解调器(DMOD)处的均衡器训练和/或跟踪,并且避免多载波系统中的高峰因子。

    Procédé de codage par blocs d'une cellule ATM utilisant un code produit
    6.
    发明公开
    Procédé de codage par blocs d'une cellule ATM utilisant un code produit 审中-公开
    Verfahren zur Blockkodierung einer ATM-Zelle mittels einem Produktkode

    公开(公告)号:EP0909109A1

    公开(公告)日:1999-04-14

    申请号:EP98402499.2

    申请日:1998-10-08

    申请人: ALCATEL

    IPC分类号: H04Q11/04 H04L1/00

    摘要: L'invention concerne un procédé de codage d'un bloc de données comprenant une première et une deuxième zones, le procédé étant de type consistant à appliquer un codage produit à ce bloc.
    Il comprend un premier codage bloc appliqué à la première zone, un deuxième codage bloc appliqué à la deuxième zone et un troisième codage bloc appliqué aux données obtenues par les deux premiers codage, dans un sens perpendiculaire aux deux premiers codes, les trois codages étant réalisés à l'aide de codes BCH, la première zone étant protégée par un code plus puissant que la deuxième zone.
    Le bloc est constitué par une cellule ATM, la première zone correspondant à l'entête de la cellule ATM et la deuxième zone au champ de données utiles de cette cellule ATM.

    摘要翻译: 两个不同的代码被应用于ATM信元的报头和数据字段。 用于标题的代码较强,是数据字段代码的子代码。 将第三编码应用于在垂直于先前编码的方向上获得的数据,使得由第三编码产生的一个字包含来自两个先前编码的每个字的位。 编码使用来自以下系列之一的BCH码:(9n,k),(n,k-1),(n + 1,k),(ns,ks),(ns,k-1-s) 整数k,n和s和s k。 来自前两个编码遍的数据在第三编码之前被隔行扫描。

    Asynchronous transfer mode integrated access service
    7.
    发明公开
    Asynchronous transfer mode integrated access service 失效
    变电站Zugang zu ATM-Telekommunikationsdiensten

    公开(公告)号:EP0844803A2

    公开(公告)日:1998-05-27

    申请号:EP97308624.2

    申请日:1997-10-29

    申请人: AT&T Corp.

    IPC分类号: H04Q11/04 H04J3/06

    摘要: A communications system is provided which supports asynchronous transfer mode (ATM) communications. An ATM multiplexer is located at a customer's premises and connected to customer premises voice and data equipment. A central office ATM multiplexer is connected to various different networks in the existing network infrastructure. The central office ATM multiplexer is preferably connected to networks such as a low-speed packet-switched network, a public circuit-switched network, a private line network, and a high-speed packet-switched network. The ATM multiplexer located at the customer premises preferably supports dynamic bandwidth allocation. Additional features provided by the communications system include the ability to provide different voice encoding schemes for different users based on calling party or called party information.

    摘要翻译: 提供支持异步传输模式(ATM)通信的通信系统。 ATM多路复用器位于客户场所,并连接到客户端的语音和数据设备。 中心局ATM多路复用器连接到现有网络基础设施中的各种不同网络。 中心局ATM多路复用器优选地连接到诸如低速分组交换网络,公共电路交换网络,专用线路网络和高速分组交换网络的网络。 位于客户驻地的ATM多路复用器优选地支持动态带宽分配。 由通信系统提供的附加特征包括基于主叫方或被叫方信息为不同用户提供不同语音编码方案的能力。

    Cryptographic data processing using cascade of cryptographic elements in feedback structure
    9.
    发明公开
    Cryptographic data processing using cascade of cryptographic elements in feedback structure 失效
    Kryptografische Datenverarbeitung unter Verwendung einer Kaskadierung kryptografischer Elemente in einerRückkoppelung。

    公开(公告)号:EP0673133A1

    公开(公告)日:1995-09-20

    申请号:EP95200632.8

    申请日:1995-03-15

    IPC分类号: H04L9/18

    摘要: The invention provides a device (1) for encrypting or decrypting data packets, comprising storage means (14) for temporarily storing data packets, identification means (15) for identifying data packets, processing means (11, 12, 13) for cryptographically processing data packets, and memory means (16) for storing cryptographic information. The processing means (11, 12, 13) comprise, according to the invention, a first (11) and a second (12) cryptographic element, the first cryptographic element (11) being designed for generating, on the basis of a first starting value, processing data for cryptographically processing a data packet, and the second cryptographic element (12) being designed for generating, on the basis of a second starting value, the first starting value. In addition, the processing means (11, 12, 13) according to the invention are designed for forming, on the basis of a cryptographically processed data packet, the second starting value, thereby ensuring the synchronization between corresponding encrypting and decrypting devices.

    摘要翻译: 本发明提供了一种用于加密或解密数据分组的装置(1),包括用于临时存储数据分组的存储装置(14),用于识别数据分组的识别装置(15),用于密码处理数据的处理装置(11,12,13) 分组,以及用于存储加密信息的存储装置(16)。 根据本发明,处理装置(11,12,13)包括第一密码元件(11)和第二密码元件(12),所述第一加密元件(11)被设计用于基于第一开始 值,处理用于密码处理数据分组的数据,以及被设计用于基于第二起始值生成第一起始值的第二密码元素(12)。 此外,根据本发明的处理装置(11,12,13)被设计用于基于密码处理的数据分组形成第二起始值,从而确保相应的加密和解密装置之间的同步。