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    Encoding information in midamble shifts
    2.
    发明专利
    Encoding information in midamble shifts 未知

    公开(公告)号：GB2364220A

    公开(公告)日：2002-01-16

    申请号：GB0015669

    申请日：2000-06-28

    Applicant: MOTOROLA INC

    Inventor： KOURTIS STAMATIS

    IPC: H04J13/00 ,  H04J13/16 ,  H04L7/04 ,  H04B7/26

    Abstract: The present invention is suitable for use with communications systems which combine Spread Spectrum and Time Division technologies, for example UTRA TDD. In such systems data is transmitted in bursts, each burst including a set of spreading codes and a midamble. However only a subset of the spreading codes may be active. In the present invention the midamble is coded with midamble shifts which provide an indication of which spreading codes are active. A signalling scheme is employed in which a transmitted midamble is shifted by first, S 1 , and second, S 2 , pointer signals which signal respectively the last code belonging to the subset of active codes and the number of codes in the original set which are not in the active subset. This provides the following advantages: not only does the receiver know the number of active codes, but also it knows (as indicated by the first midamble shift) which of the original set of codes it has to search in order to find the active codes. In order to reduce possible ambiguities a third shift, S 3 , may be used to indicate whether the number of codes in the set is even or odd.

    Downloading cellular communication network-dependent software
    3.
    发明专利
    Downloading cellular communication network-dependent software 未知

    公开(公告)号：GB2374766A

    公开(公告)日：2002-10-23

    申请号：GB0109867

    申请日：2001-04-20

    Applicant: MOTOROLA INC

    Inventor： PEARCE DAVID JOHN BENJAMIN ,  KOURTIS STAMATIS

    IPC: H04W4/02 ,  H04W4/029 ,  H04W8/24 ,  H04W48/18 ,  H04W76/04 ,  H04W88/06 ,  H04Q7/38 ,  H04Q7/32

    Abstract: A method of, and apparatus (10) for, downloading cellular communication network-dependent software to a software downloadable radio terminal (5) is described. An estimate or forecast of the likely network connection needs for an individual user is determined and network-dependent software for one or more networks (2,3) downloaded to the user's terminal before connection is required. Optionally the user may also be pre-registered at the network(s) (2,3). One advantage provided to the user is the saving of time because the terminal (5) is prepared for operation with a new network (2,3) in advance. Other benefits can be obtained by choosing the time of download of the software to be beneficial with respect to one or more aspects of operation of the terminal (5) or a communication resource used for the software download.

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