公开(公告)号：US11146328B2

公开(公告)日：2021-10-12

申请号：US14865390

申请日：2015-09-25

Applicant: QUALCOMM Incorporated

Inventor： James Determan ,  Dan Vassilovski ,  Peyman Razaghi ,  Allen Minh-Triet Tran ,  Mehmet Izzet Gurelli ,  Sumeeth Nagaraja ,  Peter John Black ,  Qiang Wu ,  Gene Wesley Marsh

IPC: H04B7/185 ,  H01Q3/28 ,  H04B7/204 ,  H01Q3/34 ,  H01Q1/28 ,  H01Q1/36

Abstract: A non-geosynchronous satellite system, where each satellite has an antenna (perhaps a multi-element antenna) to form a beam pattern comprising a set of beams in the footprint of the satellite, where in one implementation each beam is substantially elliptical in shape having a minor axis and a major axis, where the minor axes are substantially collinear and the major axes are substantially oriented east to west. For a satellite, power is reduced or turned off for a subset of the set of beams, wherein each beam in the subset is reduced at or below a corresponding power level such that when a beam is powered above its corresponding power level an equivalent power flux-density (EPFD) exceeds a limit at some point on the Earth's surface.

公开(公告)号：US10244453B2

公开(公告)日：2019-03-26

申请号：US15149008

申请日：2016-05-06

Applicant: QUALCOMM Incorporated

Inventor： Seyed Shwan Ashrafi ,  Sumeeth Nagaraja ,  Dan Vassilovski ,  Dan Zhang ,  James Determan ,  Gene Wesley Marsh ,  Jun Ma

IPC: H04W36/24 ,  H04B17/336 ,  H04B7/185 ,  H04B7/195 ,  H04W36/30 ,  H04W84/06

Abstract: Methods and apparatuses for managing inter-satellite handovers are provided to allow a user terminal to reduce the frequency of handovers while maintaining a sufficiently high system capacity in a non-geosynchronous satellite communication system. The method and apparatus for managing inter-satellite handovers may be implemented in a gateway, in infrastructure connected to a gateway, in a user terminal, or in a satellite.