Invention Grant
US06879829B2 SYSTEMS AND METHODS FOR HANDOVER BETWEEN SPACE BASED AND TERRESTRIAL RADIOTERMINAL COMMUNICATIONS, AND FOR MONITORING TERRESTRIALLY REUSED SATELLITE FREQUENCIES AT A RADIOTERMINAL TO REDUCE POTENTIAL INTERFERENCE
有权
用于基于空间和地面辐射通信之间的切换的系统和方法，以及用于监测雷达卫星频率的雷达卫星降低潜在干扰的系统和方法
- Patent Title: SYSTEMS AND METHODS FOR HANDOVER BETWEEN SPACE BASED AND TERRESTRIAL RADIOTERMINAL COMMUNICATIONS, AND FOR MONITORING TERRESTRIALLY REUSED SATELLITE FREQUENCIES AT A RADIOTERMINAL TO REDUCE POTENTIAL INTERFERENCE
- Patent Title (中): 用于基于空间和地面辐射通信之间的切换的系统和方法，以及用于监测雷达卫星频率的雷达卫星降低潜在干扰的系统和方法
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Application No.: US10828378Application Date: 2004-04-20
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Publication No.: US06879829B2Publication Date: 2005-04-12
- Inventor: Santanu Dutta , Peter D. Karabinis
- Applicant: Santanu Dutta , Peter D. Karabinis
- Applicant Address: US VA Reston
- Assignee: Mobile Satellite Ventures, LP
- Current Assignee: Mobile Satellite Ventures, LP
- Current Assignee Address: US VA Reston
- Agency: Myers Bigel Sibley & Sajovec
- Main IPC: H04B
- IPC: H04B20060101 ; H04B7/185 ; H04W24/00 ; H04W28/04 ; H04W36/14 ; H04W36/30 ; H04W84/06 ; H04Q7/20
Abstract:
A satellite communications system includes a satellite that is configured to wirelessly communicate with radioterminals in a satellite coverage area over a satellite frequency band, and an ancillary terrestrial component that is configured to wirelessly communicate with radioterminals in the satellite coverage area over at least some of the satellite frequency band, to thereby terrestrially reuse at least some of the satellite frequency band. Wireless communications with a radioterminal are handed over from the ancillary terrestrial component to the satellite if the radioterminal transmit power exceeds a threshold, and a received satellite signal quality exceeds a threshold, even though the radioterminal is able to wirelessly communicate with the ancillary terrestrial component. Downlink wireless radiation that is received at the radioterminal from a satellite may be monitored to determine potential interference created by the uplink radiation of the radioterminal due to the terrestrial reuse of at least some of the satellite frequency band.
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