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    WIRELESS COMMUNICATION SYSTEM IN WHICH VIRTUAL LINKS HAVE A VARIABLE TRANSMISSION CAPACITY
    21.
    发明专利
    WIRELESS COMMUNICATION SYSTEM IN WHICH VIRTUAL LINKS HAVE A VARIABLE TRANSMISSION CAPACITY 未知

    公开(公告)号：CA2307217C

    公开(公告)日：2007-05-22

    申请号：CA2307217

    申请日：1998-10-23

    Applicant: ERICSSON TELEFON AB L M

    Inventor： BAUTZ GREGOR ,  LI HUI ,  KHUN-JUSH JAMSHID ,  THIELECKE JORN

    IPC: H04L5/16 ,  H04Q11/04 ,  H04B7/26 ,  H04J3/00 ,  H04J3/16 ,  H04W48/12

    Abstract: Communication system for transmitting data packets via a plurality of virtua l wireless communication links established between a base station and a plurality of operable mobile stations, the communication links having a variable transmission capacity and wherein messages for a requirement-oriented data transmission are transmitted on a plurality of communication links or channels within three types of control data packets. Said control data packets contain messages grouped according t o their importance, allowing an efficient error treatment. The partitioning of messages into groups further allows an increase of the flexibility and efficiency of a data transmission, since only necessary control information is transmitted and a direct decoding of received control data packets becomes possible without a detour via a higher level of a used communication model.

    DESIGUAL PROTECCION DE ERROR EN UN SISTEMA DE TRANSMISION DE PAQUETES.
    22.
    发明专利
    DESIGUAL PROTECCION DE ERROR EN UN SISTEMA DE TRANSMISION DE PAQUETES. 未知

    公开(公告)号：ES2246344T3

    公开(公告)日：2006-02-16

    申请号：ES01985826

    申请日：2001-11-27

    Applicant: ERICSSON TELEFON AB L M

    Inventor： ZIMMERMANN GERD ,  LI HUI ,  WENGER FABIAN ,  LINDSKOG JAN ,  PAULI MATHIAS

    IPC: H04L1/00 ,  H04L1/08

    Abstract: Método para un sistema de transmisión por paquetes (1, 2, 3, 4, 5), tal como un sistema de transmisión inalámbrica, utilizando dicho método codificación de convolución de corrección de errores en recepción, en el cual los datos se transmiten en paquetes a diferentes niveles de protección de errores, donde el nivel de protección de errores de un paquete (PDUN+1) puede diferir del nivel de protección de errores de un paquete precedente (PDUN) y donde no se proporciona terminación de código entre dicho paquete precedente (PDUN) y dicho siguiente (PDUN+1) caracterizado porque en caso de que se use un nivel de protección de errores diferente por el paquete precedente (PDUN) y por el paquete siguiente (PDUN+1), se inserta un paquete suplementario DUMMY-PDU (PDU-FICTICIA) (55, 56) entre el paquete precedente y el siguiente con lo cual el nivel de protección de errores del paquete suplementario DUMMY-PDU (PDU-FICTICIA) es más alto que el menor nivel de protección de errores que se usa bien por el paquete precedente PDUN, o el sucesivo PDUN+1.

    23.
    发明专利
    未知

    公开(公告)号：DE60113875D1

    公开(公告)日：2005-11-10

    申请号：DE60113875

    申请日：2001-11-27

    Applicant: ERICSSON TELEFON AB L M

    Inventor： ZIMMERMANN GERD ,  LI HUI ,  WENGER FABIAN ,  LINDSKOG JAN ,  PAULI MATHIAS

    IPC: H04L1/00 ,  H04L1/08

    Abstract: In a packet transmission system, especially wireless transmission system, where data is transmitted in packets at different error protection levels and where the error protection level of one packet (= the succeeding packet) may differ from the error protection level of a preceding packet without providing code termination between the said preceding and the said succeeding packet the performance may degrade in case a different error protection level is used by the preceding packet and the succeeding packet. The invention proposes in these cases to insert a supplementary packet between the preceding and the succeeding packet whereby the error protection level of the supplementary packet is higher than the lowest error protection level that is used either by the preceding or the succeeding packet.

    24.
    发明专利
    未知

    公开(公告)号：DE69921666T2

    公开(公告)日：2005-10-27

    申请号：DE69921666

    申请日：1999-08-06

    Applicant: ERICSSON TELEFON AB L M

    Inventor： MALMGREN GOERAN ,  LARSSON MIKAEL ,  LARSSON PETER ,  LI HUI

    IPC: H04M1/725 ,  H04B7/06 ,  H04L12/28 ,  H04W16/24 ,  H04W24/00 ,  H04W48/20 ,  H04W74/00 ,  H04W84/04 ,  H04W84/12 ,  H04Q7/38

    Abstract: In a cellular, broadband radio access network, such as a High Performance Local Area Network Type 2 (HIPERLAN/2), which employs multiple antennas per base station, the process of identifying and selecting the most appropriate base station antenna to support a given mobile terminal may be accomplished more effectively by allowing the mobile terminal to initiate antenna selection and, thereafter, to identify the most appropriate one of the multiple base station antennas. By utilizing the mobile terminal in this capacity, the process of antenna selection can be accomplished more effectively even if there is relatively little uplink communication between the mobile terminal and its corresponding base station.

    Selective repeat arq with efficient utilization of bitmaps
    25.
    发明专利
    Selective repeat arq with efficient utilization of bitmaps 未知

    公开(公告)号：AU4322600A

    公开(公告)日：2000-10-23

    申请号：AU4322600

    申请日：2000-04-07

    Applicant: ERICSSON TELEFON AB L M

    Inventor： LINDSKOG JAN ,  MALMGREN GORAN ,  LI HUI ,  RYDNELL GUNNAR ,  NILSSON FREDRIK ,  MIKLOS GYORGY

    IPC: H04L1/16 ,  H04L1/18 ,  H04L12/28 ,  H04L29/08 ,  H04L1/00

    Abstract: In a wireline or wireless telecommunications system or data network, which employs a Selective Repeat Automatic Repeat Request (ARQ) to convey data packet reception status for a sequence of data packets grouped together into a number of blocks of data packets, partial bit mapping is employed to improve efficiency, particularly with respect to bandwidth. This may be accomplished, more specifically, by including in the ARQ message that is sent from the receiver to the sender, a number of partial bitmaps, along with a corresponding number of bitmap block numbers, where a first bitmap block number identifies a particular one of the blocks of data packets and the corresponding bitmap defines the reception status of the data packets in that block. Each of the remaining bitmap block numbers identify an additional block of data packets relative to the first block of data packets. Accordingly, the remaining bitmap block numbers require fewer bits to identify their corresponding data packet blocks.

    Communication system
    26.
    发明专利
    Communication system 未知

    公开(公告)号：AU1336199A

    公开(公告)日：1999-05-17

    申请号：AU1336199

    申请日：1998-10-23

    Applicant: ERICSSON TELEFON AB L M

    Inventor： LI HUI ,  BAUTZ GREGOR ,  JUSH JAMSHID KHUN ,  THIELECKE JORN

    IPC: H04L5/16 ,  H04B7/26 ,  H04J3/00 ,  H04J3/16 ,  H04W48/12 ,  H04Q11/04

    Abstract: Communication system for transmitting data packets via a plurality of virtual wireless communication links established between a base station and a plurality of operable mobile stations, the communication links having a variable transmission capacity and wherein messages for a requirement-oriented data transmission are transmitted on a plurality of communication links or channels within three types of control data packets. Said control data packets contain messages grouped according to their importance, allowing an efficient error treatment. The partitioning of messages into groups further allows an increase of the flexibility and efficiency of a data transmission, since only necessary control information is transmitted a direct decoding of received control data packets becomes possible without a detour via a higher level of a used communication model.

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