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    Method and system of transmission power control
    4.
    发明专利
    Method and system of transmission power control 未知

    公开(公告)号：AU2003269759A1

    公开(公告)日：2005-04-21

    申请号：AU2003269759

    申请日：2003-10-07

    Applicant: ERICSSON TELEFON AB L M

    Inventor： OSTMAN THOMAS ,  PETTERSSON JAN

    IPC: H04B7/005

    Abstract: The present invention relates to cellular mobile radio systems, and more especially it relates to Code Division Multiple Access, CDMA, cellular mobile radio systems, particularly to transmission power control in such systems. A method and apparatus for transmission of compensated TPC commands when a substantial loop delay is experienced for one or more user equipment entities is disclosed.

    REALISING INTERNALLY GAINED PRECISION OF DIGITAL SIGNAL PROCESSOR
    5.
    发明专利
    REALISING INTERNALLY GAINED PRECISION OF DIGITAL SIGNAL PROCESSOR 未知

    公开(公告)号：NZ301398A

    公开(公告)日：1998-05-27

    申请号：NZ30139896

    申请日：1996-02-14

    Applicant: ERICSSON TELEFON AB L M

    Inventor： OSTMAN THOMAS ,  GUSTAFSSON MAGNUS ,  JARLEHOLM ANDERS

    IPC: H03G3/20 ,  H03G7/00

    Abstract: A device and method are provided for fully realizing the precision gained internally from a conventional digital signal processor by generating a feed forward automatic gain control (AGC) signal. The feed forward AGC bit is indicative of the output of the digital signal processor being multiplied by a gain factor when the output from the digital filter included in the digital signal processor is below a threshold value. When the feed forward AGC signal is received by an inphase and quadrature (I/Q)-to-(logR/ phi ) converter connected to the digital signal processor, a corresponding value is subtracted from the radius component of the signal calculated by the (I/Q)-to-(logR/ phi ) converter. Because conventional digital signal processors have 16 IO bits, the feed forward AGC signal allows an input signal with a dynamic range and precision exceeding 16 bits to be transferred from the digital signal processor without loosing performance. As a result, a digital signal processor with a fewer number of IO bits than is nominally required for the precision and dynamic range of the output signal is implemented.

    ARRANGEMENT AND METHOD OF RADIO BASE STATION AND RADIO UNITS
    6.
    发明专利
    ARRANGEMENT AND METHOD OF RADIO BASE STATION AND RADIO UNITS 未知

    公开(公告)号：CA2820858A1

    公开(公告)日：2012-06-14

    申请号：CA2820858

    申请日：2011-12-07

    Applicant: ERICSSON TELEFON AB L M

    Inventor： SKARBY ULF ,  OSTMAN THOMAS ,  ALAMSHAHI BABAK

    IPC: H04W16/12 ,  H04W88/08

    Abstract: The present invention relates to a radio base station (RBS) (1). The RBS comprises a first radio unit (RU) (2) and a second RU (3). The RBS is configured such that said first and second RUs will use the same scrambling or cell identity code for communication with a wireless communication terminal (9) such that the wireless communication terminal will regard the first and second RUs as relating to the same cell of the RBS. The invention also relates to a communication system (13) comprising the RBS, as well as to a use of the RBS for performing an internal handover, after UL measurements, of the communication terminal from the first RU to the second RU, and a method of arranging the RBS.

    DETERMINING SIGNAL COMPONENTS USING DIGITAL SIGNAL PROCESSING
    7.
    发明专利
    DETERMINING SIGNAL COMPONENTS USING DIGITAL SIGNAL PROCESSING 未知

    公开(公告)号：CA2238332C

    公开(公告)日：2003-04-15

    申请号：CA2238332

    申请日：1996-11-15

    Applicant: ERICSSON TELEFON AB L M

    Inventor： ENGMAN ANDERS ,  OSTMAN THOMAS

    IPC: H04L27/20 ,  G01R25/00

    Abstract: Methods and systems for determining a cosine (I) or sine (Q) component for t he purpose of modulating a digital signal in radiocommunication systems are disclosed. Exemplary embodiments describe how such determinations may be performed using digital signal processing techniques to improve component accuracy, while reducing the amount of processor memory (e.g., DSP memory) used to accomplish this task. Phase information from a sampled signal is use d to access one or more tables containing component values, or a combination o f a component base values and difference values between consecutive base value s. The phase information can be used to derive an offset value from the difference values, which offset value is added to a component base value to provide a component value for output. This has the effect of reducing the amount of memory consumed while maintaining high resolution.

    Directional-beam generative apparatus and associated method
    8.
    发明专利
    Directional-beam generative apparatus and associated method 未知

    公开(公告)号：AU757906B2

    公开(公告)日：2003-03-13

    申请号：AU5785398

    申请日：1998-01-09

    Applicant: ERICSSON TELEFON AB L M

    Inventor： HAGERMAN BO ,  FORSSEN ULF ,  OSTMAN THOMAS ,  MAHLER HANS

    IPC: H01Q3/26 ,  H01Q25/00 ,  H04B7/26 ,  H04W16/28 ,  H04Q7/36

    Abstract: Directional beam generative apparatus, and an associated method, for a radio communication station forms directional antenna beam patterns for the communication of communication signals with remote communication stations operable in a TDMA communication system. Channels are allocated for effectuation of communications between the radio communication station and the remote stations responsive to indications of locations at which the remote communication stations are indicated to be positioned. Remote communication stations indicated to be positioned within a selected area are allocated to channels formed upon a single carrier.

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