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    VERFAHREN ZUR ERHÖHUNG DER SICHERHEIT VON AUTHENTISIERUNGSVERFAHREN IN DIGITALEN MOBILFUNKSYSTEMEN
    4.
    发明授权
    VERFAHREN ZUR ERHÖHUNG DER SICHERHEIT VON AUTHENTISIERUNGSVERFAHREN IN DIGITALEN MOBILFUNKSYSTEMEN 有权
    法提高认证过程的安全性在数字移动系统

    公开(公告)号：EP1112666B1

    公开(公告)日：2007-04-04

    申请号：EP99955670.7

    申请日：1999-09-07

    申请人： T-Mobile Deutschland GmbH

    发明人： HAKE, Jens ,  THELEN, Jörg

    IPC分类号： H04Q7/38

    CPC分类号： H04W12/06 ,  H04L9/3271 ,  H04L63/0853 ,  H04L2209/80

    摘要： The invention relates to a method for improving the security of authentication procedures in digital mobile radio telephone systems. In order to make it more difficult if not impossible to work out a secret code KI, several different secret SIM-specific codes KI are contained in the mobile radio telephone network and on a subscriber identity module SIM and a code KI for the implementation of said authentication is selected from the various secret codes thus contained during the authentication process between the subscriber identity module and the mobile radio telephone system pertaining to said SIM.

    VERFAHREN ZUR VERRINGERUNG DER LATENZZEIT BEI DER ÜBERTRAGUNG VON INFORMATIONEN IN EINEM GPRS-NETZWERK
    5.
    发明授权
    VERFAHREN ZUR VERRINGERUNG DER LATENZZEIT BEI DER ÜBERTRAGUNG VON INFORMATIONEN IN EINEM GPRS-NETZWERK 有权
    一种用于减少等待时间的信息的传输在GPRS网络中

    公开(公告)号：EP1393511B1

    公开(公告)日：2005-12-07

    申请号：EP02747178.8

    申请日：2002-05-29

    申请人： T-Mobile Deutschland GmbH

    发明人： HAKE, Jens

    IPC分类号： H04L12/56 ,  H04Q7/22

    CPC分类号： H04W4/00 ,  H04W76/12

    摘要： The invention relates to a method for reducing the latency in a GPRS network, via which information is transmitted between a data requesting unit, i.e. a client (1), and a data-providing unit, i.e. a server (9), in the form of data packets. In order to transmit the data packets from the client (1) to the server (9), at least one first communication channel (UL-TBF) is opened and then closed. At least a second communication channel (DL-TBF) is then opened and closed for transmitting information from the server (9) to the client (1). A not insignificant latency is thus produced between the request for information and the receipt of information, which can be reduced, according to the invention, by opening the second communication channel (DL-TBF) before closing the first communication channel (UL-TBF). A radio channel is thus provided for preventive purposes, for the feedback of the requested data.

    VERFAHREN ZUR VERRINGERUNG DER LATENZZEIT BEI DER ÜBERTRAGUNG VON INFORMATIONEN IN EINEM GPRS-NETZWERK
    6.
    发明公开
    VERFAHREN ZUR VERRINGERUNG DER LATENZZEIT BEI DER ÜBERTRAGUNG VON INFORMATIONEN IN EINEM GPRS-NETZWERK 有权
    一种用于减少等待时间的信息的传输在GPRS网络中

    公开(公告)号：EP1393511A1

    公开(公告)日：2004-03-03

    申请号：EP02747178.8

    申请日：2002-05-29

    申请人： T-Mobile Deutschland GmbH

    发明人： HAKE, Jens

    IPC分类号： H04L12/56 ,  H04Q7/22

    CPC分类号： H04W4/00 ,  H04W76/12

    摘要： The invention relates to a method for reducing the latency in a GPRS network, via which information is transmitted between a data requesting unit, i.e. a client (1), and a data-providing unit, i.e. a server (9), in the form of data packets. In order to transmit the data packets from the client (1) to the server (9), at least one first communication channel (UL-TBF) is opened and then closed. At least a second communication channel (DL-TBF) is then opened and closed for transmitting information from the server (9) to the client (1). A not insignificant latency is thus produced between the request for information and the receipt of information, which can be reduced, according to the invention, by opening the second communication channel (DL-TBF) before closing the first communication channel (UL-TBF). A radio channel is thus provided for preventive purposes, for the feedback of the requested data.