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    SYSTEMS AND METHODS FOR MONITORING TERRESTRIALLY REUSED SATELLITE FREQUENCIES TO REDUCE POTENTIAL INTERFERENCE
    3.
    发明公开
    SYSTEMS AND METHODS FOR MONITORING TERRESTRIALLY REUSED SATELLITE FREQUENCIES TO REDUCE POTENTIAL INTERFERENCE 有权
    系统和监测方法地面再次使用卫星频率以减少潜在的问题

    公开(公告)号：EP1425931A4

    公开(公告)日：2008-10-01

    申请号：EP02768424

    申请日：2002-08-05

    申请人： ATC TECH LLC

    发明人： KARABINIS PETER D ,  CHURAN GARY GEORGE

    IPC分类号： H04B7/185 ,  H04B7/216 ,  H04W16/02

    CPC分类号： H04W16/02 ,  H04B7/18513 ,  H04B7/18563 ,  H04B7/216

    摘要： Radiation by an ancillary terrestrial network, and/or satellite radiotelephones (120a, 120b) that communicate therewith are monitored and controlled, to reduce and preferably prevent intra-system interference and/or interference with other satellite radiotelephone systems. In particular, a satellite radiotelephone system includes a space-based component (110) that is configured to wirelessly communicate with first radiotelephones in a satellite footprint over a satellite radiotelephone frequency band (fD, fU), and an ancillary terrestrial network that is configured to wirelessly communicate with second radiotelephones in the satellite footprint over at least some of the satellite radiotelephone frequency band (f'D, f'U), to thereby terrestrially reuse the at least some of the satellite radiotelephone frequency band.

    ADDITIONAL SYSTEMS AND METHODS FOR MONITORING TERRESTRIALLY REUSED SATELLITE FREQUENCIES TO REDUCE POTENTIAL INTERFERENCE
    4.
    发明公开
    ADDITIONAL SYSTEMS AND METHODS FOR MONITORING TERRESTRIALLY REUSED SATELLITE FREQUENCIES TO REDUCE POTENTIAL INTERFERENCE 有权
    附加系统和监测方法地面再次使用卫星频率以减少潜在的问题

    公开(公告)号：EP1425930A4

    公开(公告)日：2007-11-21

    申请号：EP02766068

    申请日：2002-08-23

    申请人： ATC TECH LLC

    发明人： KARABINIS PETER D ,  NGUYEN SERGE

    IPC分类号： H04B7/185 ,  H04B7/216 ,  H04Q7/36 ,  H04Q7/20

    CPC分类号： H04B7/18563 ,  H04B7/18513 ,  H04B7/216

    摘要： Satellite radiotelephone system includes a space-based component (110), an ancillary terrestrial network, a monitor and a controller. The space-based component is configured to wirelessly communicate with radiotelephones (120a, 120b) in a satellite footprint over a satellite radiotelephone frequency band (fD, fU). The satellite footprint is divided into satellite cells in which subsets of the satellite radiotelephone frequency band are spatially reused in a spatial reuse pattern. The ancillary terrestrial network is configured to wirelessly communicate with radiotelephones in the satellite footprint over at least some of the satellite radiotelephone frequency band, to thereby terrestrially reuse the at least some of the satellite radiotelephone frequency band.

    SYSTEMS AND METHODS FOR TERRESTRIAL REUSE OF CELLULAR SATELLITE FREQUENCY SPECTRUM
    7.
    发明公开
    SYSTEMS AND METHODS FOR TERRESTRIAL REUSE OF CELLULAR SATELLITE FREQUENCY SPECTRUM 有权
    系统和蜂窝卫星无线电频谱的地面再用方法

    公开(公告)号：EP1425926A4

    公开(公告)日：2008-10-01

    申请号：EP02761235

    申请日：2002-08-05

    申请人： ATC TECH LLC

    发明人： KARABINIS PETER D

    IPC分类号： H04B7/185 ,  H04B7/216 ,  H04W16/02

    CPC分类号： H04B7/216 ,  H04B7/18513 ,  H04B7/1853 ,  H04B7/18563 ,  H04W16/14 ,  H04W52/367

    摘要： A satellite radiotelephone frequency (fU,fD) can be reused terrestrially by an ancillary terrestrial network (Fig.1) even within the same satellite cell, using interference cancellation techniques. Moreover, the ancillary network can use a modified range of satellite band forward link frequencies (f'D) for transmission, to reduce interference with out-of-band receivers. A modified range of satellite band forward link frequencies that is used by the ancillary terrestrial network can include only a subset of the standard satellite band forward link frequencies to provide a guard band, can include power levels that monotonically decrease as a function of increasing frequency and/or can include two or more contiguous slots per frame that are left unoccupied and/or are transmitted at reduced maximum power. Time division duplex operation of the ancillary terrestrial network may also be provided over at least a portion of satellite band return frequencies.