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    51.
    发明专利
    未知

    公开(公告)号：DE60037942D1

    公开(公告)日：2008-03-20

    申请号：DE60037942

    申请日：2000-06-20

    Applicant: ERICSSON TELEFON AB L M

    Inventor： LINDSKOG JAN ,  RYDNELL GUNNAR ,  POHJANVUORI TIMO

    IPC: H04B7/26 ,  H04W72/04 ,  H04W72/12 ,  H04W76/04

    Abstract: The present invention provides a method and system for reducing the delay of the transmission of packet data including receiving data from a network via a base station and assigning a mobile station to a packet channel having an active mode and a variable fast page mode. Packet data is exchanged in the active mode until a first inactivity timer expires. The base station and mobile station are then switched to a variable fast page mode in which additional packet data can be exchanged, wherein the variable fast page mode has a greater delay between transmission opportunities than the active mode. The variable fast page mode schedules specific time slots which are monitored for the transmission and receipt of successive packets. In addition, the periodicity of future time slots can vary based on the delay between the successive packets. The mobile station remains in variable fast page mode until the expiration of a second inactivity timer or at the reception of a transmission opportunity and subsequent data transfer to or from the mobile station.

    53.
    发明专利
    未知

    公开(公告)号：AT372632T

    公开(公告)日：2007-09-15

    申请号：AT02799533

    申请日：2002-09-11

    Applicant: ERICSSON TELEFON AB L M

    Inventor： LINDSKOG JAN ,  RYDNELL GUNNAR ,  LARSSON PETER

    IPC: H04L12/56 ,  H04B7/26 ,  H04L12/26 ,  H04L12/28 ,  H04W28/18 ,  H04W28/24 ,  H04W40/02 ,  H04W40/24 ,  H04W74/08 ,  H04W76/02 ,  H04W80/00 ,  H04W84/12

    Abstract: A method for multihop packet trasmissions in a wireless network involves establishing a multihop route through the wireless network. After establishment of the multihop route, transmission protocol parameter are altered to minimize delays for transmissions over the multihop route and at least one packet is transmitted over the multihop route according to the altered transmission protocol parameters. In a first embodiment, the altering of the transmission protocol parameters includes setting a NAV value at each node of the multihop route for a duration of the packet transmissions over the route. In an alternative embodiment, multihop packets are assigned a higher QoS value.

    55.
    发明专利
    未知

    公开(公告)号：DE60113875T2

    公开(公告)日：2006-04-20

    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.

    Method and apparatus for caching location information of transmitting mobile stations
    56.
    发明专利
    Method and apparatus for caching location information of transmitting mobile stations 未知

    公开(公告)号：AU761416B2

    公开(公告)日：2003-06-05

    申请号：AU2754799

    申请日：1999-02-26

    Applicant: ERICSSON TELEFON AB L M

    Inventor： HALL GORAN ,  SUNDELL HANS-OLOF ,  TOTH STEFAN ,  LINDEN MATS ,  LINDSKOG JAN

    IPC: H04W8/12 ,  H04Q7/22

    Abstract: A method and apparatus for caching mobile station location information comprising a gateway packet switch node for receiving and transmitting data packets between a plurality of visiting packet switch nodes and at least one communication network and a cache memory located within the gateway packet switch node for caching location information received with a data packet from a transmitting mobile station. A communication packet, containing information pertaining to the location of a transmitting mobile station is received by the gateway packet switch node. The location information is extracted from the received communication packet and cached. When an incoming data packet is received by the gateway packet switch node, a determination is made as to whether the location information for the destination mobile station is stored within the cache. If the location information is stored within the cache the location information is retrieved from the cache and the data packet is routed to the mobile station. Otherwise, the location information is retrieved from a home location register and the data packet is routed to the mobile station.

    Selective repeat ARQ with efficient utilization of bitmaps
    58.
    发明专利
    Selective repeat ARQ with efficient utilization of bitmaps 未知

    公开(公告)号：GB2364869A

    公开(公告)日：2002-02-06

    申请号：GB0126543

    申请日：2000-04-07

    Applicant: ERICSSON TELEFON AB L M

    Inventor： LINDSKOG JAN ,  MALMGREN GOERAN ,  LI HUI ,  RYDNELL GUNNAR ,  NILSSON FREDERIK ,  MIKLOS GYOERGY

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

    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.

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