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    PROCÉDÉ D'ESTIMATION DE PARAMÈTRES DE SIGNAUX CONTENUS DANS UNE BANDE DE FRÉQUENCES
    4.
    发明公开
    PROCÉDÉ D'ESTIMATION DE PARAMÈTRES DE SIGNAUX CONTENUS DANS UNE BANDE DE FRÉQUENCES 审中-公开

    公开(公告)号：EP3412012A1

    公开(公告)日：2018-12-12

    申请号：EP17702399.1

    申请日：2017-02-03

    申请人： ZODIAC DATA SYSTEMS

    发明人： GOULDIEFF, Vincent ,  DAUMONT, Steredenn ,  PALICOT, Jacques ,  THOMAS, Yann

    IPC分类号： H04L27/00 ,  H04L27/26

    CPC分类号： H04L27/0012 ,  H04L27/2601

    摘要： The invention relates to a method for estimating parameters of a single signal or mixed-frequency signals in a given band. The method includes the following steps: receiving (E0) a single signal or mixture of signals y(t) in a given frequency band, - determining (E3) for L, a strictly positive real number taken in a set of q, q being strictly positive, predetermined values {L
    1 ;...;L
    q } of the spectral correlation function (I), where (II) is the cyclic autocorrelation function for raising the sampled version y(n) of the signal y(t) to the power of L, where F
    τ [.] is the Fourier transform, and where, for each q, α can separately take one or more discrete values and/or cover one or more value ranges, - processing (E4) each transform
    LS CFy(f,α), L being taken in a set of q, q being strictly positive, predetermined values {L
    i ;...; L
    q } for extracting therefrom a set of peaks p
    i , that is, local maxima detected on the basis of the variables f and α or on the basis of the single variable f for each discrete value of α, each of said peaks being characterized by a triplet {LAp
    i , LFp
    i , Lαp
    i } are respectively the frequency and cyclic frequency at which said triplet is located and LAp
    i is the amplitude thereof, and - identifying (E5) groups of triplets {LAp
    i , LFp
    i , Lαp
    i } as being the signature left by a set of parameters making up the signals present in the given frequency band.

    MEASUREMENT AND CARRIER GROUP BASED OPTIMIZATION IN WIRELESS OFDM MULTI-CARRIER COMMUNICATION SYSTEMS
    6.
    发明公开
    MEASUREMENT AND CARRIER GROUP BASED OPTIMIZATION IN WIRELESS OFDM MULTI-CARRIER COMMUNICATION SYSTEMS 审中-公开

    公开(公告)号：EP3407557A1

    公开(公告)日：2018-11-28

    申请号：EP18178352.3

    申请日：2010-12-30

    申请人： MediaTek Inc.

    发明人： CHOU, Chao-Chin ,  FU, I-Kang

    IPC分类号： H04L27/26 ,  H04B17/318 ,  H04W72/08

    CPC分类号： H04L27/2601 ,  H04B17/318 ,  H04B17/336 ,  H04B17/373 ,  H04B17/382 ,  H04W72/085

    摘要： In a wireless OFDM multi-carrier communication system, a mobile station obtains measurement result of a first received signal strength indication (RSSI) of a first preamble signal transmitted from a base station over a first radio frequency (RF) carrier. The mobile station also obtains signal offset information between the first RF carrier and a second RF carrier of the base station. In response to the measurement result and the signal offset information, the mobile station estimates a second RSSI of a second preamble signal transmitted by the base station over the second RF carrier without performing scanning over the second RF carrier. In one novel aspect, the mobile station identifies a carrier group containing multiple carriers that belong to the same base station. Measurement optimization, initial cell selection and cell reselection optimization, report reduction, and other carrier group based optimization can be achieved in the multi-carrier system based on identified carrier group.