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    INITIAL ACCESS PROCEDURE USING PRECONFIGURED RESOURCES
    2.
    发明公开
    INITIAL ACCESS PROCEDURE USING PRECONFIGURED RESOURCES 审中-实审

    公开(公告)号：EP4391696A3

    公开(公告)日：2024-07-03

    申请号：EP24173713.9

    申请日：2017-08-24

    申请人： QUALCOMM Incorporated

    发明人： ABEDINI, Navid ,  LUO, Tao ,  SUBRAMANIAN, Sundar ,  ISLAM, Muhammad Nazmul ,  LI, Junyi ,  SAMPATH, Ashwin ,  CEZANNE, Juergen ,  SADIQ, Bilal ,  MUKKAVILLI, Krishna Kiran ,  MALLADI, Durga Prasad ,  KOYMEN, Ozge ,  MAHARSHI, Atul

    IPC分类号： H04W74/08

    CPC分类号： H04B7/2041 ,  H04W74/0833

    摘要： A method of wireless communication by a user equipment, UE, and a base station are described. The method performed by the UE comprises transmitting, to a base station, a MSG1 (504) of a random access channel, RACH, procedure over a first bandwidth of a system bandwidth that is less than the system bandwidth, receiving, from the base station after transmitting the MSG1 (504), a MSG2 (506) of the RACH procedure over the first bandwidth, receiving, from the base station after transmitting the MSG1 (504) and receiving the MSG2 (506), a MSG4 of the RACH procedure that indicates one or more resources for one or more beam reference signals, BRSs (510, 518), associated with a second bandwidth of the system bandwidth, receiving the one or more BRSs (510, 518) over one or more portions of the second bandwidth, the one or more portions of the second bandwidth being different than the first bandwidth, performing beam quality measurements of the one or more BRSs (510, 518) in the one or more portions of the second bandwidth and transmitting, to the base station, feedback based on the beam quality measurements of the one or more BRSs (510, 518) and receiving, from the base station, a physical downlink shared channel, PDSCH (520), over the second bandwidth.

    COMMUNICATIONS SATELLITE, LINE CONTROL APPARATUS, AND SATELLITE COMMUNICATIONS SYSTEM
    5.
    发明公开
    COMMUNICATIONS SATELLITE, LINE CONTROL APPARATUS, AND SATELLITE COMMUNICATIONS SYSTEM 审中-公开

    公开(公告)号：EP3373473A1

    公开(公告)日：2018-09-12

    申请号：EP15911392.7

    申请日：2015-12-25

    申请人： Mitsubishi Electric Corporation

    发明人： MOTOYOSHI, Katsuyuki

    IPC分类号： H04B7/185 ,  H04B7/08 ,  H04B7/10

    CPC分类号： H04B7/18523 ,  H04B7/08 ,  H04B7/0871 ,  H04B7/10 ,  H04B7/18515 ,  H04B7/2041

    摘要： A communication satellite (1) according to the present invention includes user beam antennas (11-1, 11-2) capable of forming user beams and feeder beam antennas (24-1 to 24-3) capable of forming feeder link beams. The communication satellite includes demultiplexing units (15-1, 15-2) that divide a reception signal into up-user-link signals, multiplexing units (20-1 to 20-3) that multiplex input signals and output the signals to feeder beam antennas (24-1 to 24-3), and a switch (18) that duplicates an up-user-link signal on the basis of information determined for each of the up-user link signals and indicating whether the user link signal is duplicated, generates a duplicated signal, and outputs the duplicated signal and the up-user-link signal to the multiplexing units (20-1 to 20-3) corresponding to second beams respectively allocated to the duplicated signal and the up-user-link signal.

    PLACEMENT OF GATEWAYS NEAR SERVICE BEAMS
    7.
    发明授权
    PLACEMENT OF GATEWAYS NEAR SERVICE BEAMS 有权

    公开(公告)号：EP2412177B1

    公开(公告)日：2018-08-22

    申请号：EP10756573.1

    申请日：2010-03-11

    申请人： ViaSat Inc.

    发明人： MILLER, Mark J. ,  DANKBERG, Mark D.

    IPC分类号： H04B7/204 ,  H04B7/185

    CPC分类号： H04B7/2041

    摘要： A method and system are presented for operating a multibeam satellite system involving positioning a plurality of service beams associated with a plurality of service beam coverage areas and positioning a feeder beam associated with a feeder beam coverage area. The feeder beam coverage area is at a proximity to at least one service beam coverage area. The feeder beam coverage area includes at least one gateway. Each of the plurality of service beam coverage areas uses a color. The at least near service beam coverage area uses at least one color from the plurality of colors. The feeder beam uses at least one color, excluding the at least one color used by the at least one near service beam coverage area.

    Flexible coverage areas for forward link signals in a spot beam satellite communication system
    8.
    发明授权
    Flexible coverage areas for forward link signals in a spot beam satellite communication system 有权

    公开(公告)号：EP2451088B1

    公开(公告)日：2018-07-11

    申请号：EP11153191.9

    申请日：2011-02-03

    申请人： ViaSat, Inc.

    发明人： Miller, Mark J.

    IPC分类号： H04B7/185 ,  H04B7/204

    CPC分类号： H04B7/18515 ,  H04B7/2041 ,  Y02D70/164 ,  Y02D70/446

    摘要： Conventional spot beam satellites receive return uplink beam signals that each correspond to a separate and unique return downlink beam. An embodiment of the invention allows flexible coverage areas by selectively attenuating and combining multiple return uplink beam signals and transmitting them on a single beam to a gateway terminal. This allows uplink capacity to be dynamically allocated amongst different uplink signals. Offered load in different beams can be predicted and used to set the attenuation values appropriately and the attenuation values may also be controlled remotely.