Satellite communication system using linear cell tracking

Details Satellite communication system using linear cell tracking Satellite communication system using linear cell tracking

2007-01-30

2007-01-30

Anderson, Matthew D. (Department: 2618)

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

C455S013100, C455S013300, C455S427000, C455S428000, C455S446000, C370S316000, C701S013000

Reexamination Certificate

active

10172260

ABSTRACT:
An improved satellite communication device and system are provided. The satellite communication device uses yaw or roll-yaw steering to linearize angular track of uplink cells; one-dimensional linear “ratcheting” in an uplink antenna to maintain resource allocation of uplink cells along antenna columns; phased-array downlink antennas which can track earth-fixed downlink cells while compensating for the yaw (or roll-yaw) satellite steering; and variable rate TDMA service among downlink cells in a footprint. As a result, system overhead for performing new resource allocations between satellite handovers is minimized, thereby reducing resource management and increasing system capacity. Flexible bandwidth/capacity assignment of both uplink and downlink resources to earth locations via linear cell ratcheting, uplink RF peaking switch, and data-driven variable-TDMA downlink phased-arrays, is provided.

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