WIRELESS COMMUNICATION DATA RATE CONTROL PREDICTION METHOD AND SYSTEM

    公开(公告)号:AU2003260004A1

    公开(公告)日:2004-03-11

    申请号:AU2003260004

    申请日:2003-08-22

    Applicant: QUALCOMM INC

    Abstract: Systems and methods for predicting the signal-to-interference-and-noise ratio (SINR) of the signal to be received by a mobile station transmitted from a base station in a wireless data communications system, for the purpose of forward link data rate control in the presence of partly periodic SINR fluctuations. The invention involves determination of a periodic mean SINR component in the received SINR process, and upon such determination the activation of a method which comprises a periodic mean SINR estimator, a subtractor which subtracts the periodic component from the received SINR process to produce an intermediate SINR process, a generic predictor which may be used to perform predictions on the intermediate SINR process, an adder which adds back an appropriate mean value to the intermediate SINR prediction. The resulting final SINR prediction is then used for rate selection.

    IMPROVING EPFD COVERAGE FOR NGSO SATELLITES

    公开(公告)号:SG11201706094RA

    公开(公告)日:2017-10-30

    申请号:SG11201706094R

    申请日:2016-03-05

    Applicant: QUALCOMM INC

    Abstract: A method and apparatus for operating one or more satellites in a non-geosynchronous orbit (NGSO) satellite constellation are disclosed. In some aspects, the satellite may allocate a first frequency band to a first beam, and may allocate a second frequency band to a second beam. Then, if the first beam is disabled, the satellite may re-map the first frequency band from the first beam to the second beam. In this manner, frequency resources initially allocated to a disabled beam may be re-mapping to another, non-disabled beam.

    SYSTEM AND METHOD FOR BEAMFORMING WITH DATA RATE CONTROL FEEDBACK

    公开(公告)号:AU2003265604A1

    公开(公告)日:2004-03-11

    申请号:AU2003265604

    申请日:2003-08-19

    Applicant: QUALCOMM INC

    Abstract: Systems and methods for adaptively forming a transmission beam to optimize data transmissions to one or more receivers (mobile stations). In one embodiment, a method comprises varying a transmission beam pattern by controlling a parameter such as the phase shift between a primary transmission signal and a secondary transmission signal. As the beam pattern is varied, data is collected on the performance of communications using the beam. The data is then examined to identify values of the control parameter for which performance is maximized. The control parameter is then maintained at these values for longer periods of time than those values for which performance is lower. Data throughput can thereby be increased for situations in which there are relatively few mobile stations in the sector.

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