发明授权
- 专利标题: System and method for providing dual satellite communications coverage
- 专利标题(中): 提供双重卫星通信覆盖的系统和方法
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申请号: US09436572申请日: 1999-11-09
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公开(公告)号: US06411609B1公开(公告)日: 2002-06-25
- 发明人: Thomas Peter Emmons, Jr. , Robert Anthony Peters , Shawn Hogberg
- 申请人: Thomas Peter Emmons, Jr. , Robert Anthony Peters , Shawn Hogberg
- 主分类号: H04B7212
- IPC分类号: H04B7212
摘要:
A satellite communication system uses dual satellite coverage techniques to simulate the provision of full duplex communications in the system. Each subscriber (100) in the system communicates with two satellites (102, 104) that use complementary time division duplex (TDD) frame structures (50, 72) for communicating with the subscriber (100). In one embodiment, each satellite in the system performs a transition between a first TDD frame structure (50) and a second TDD frame structure (72) while travelling through a transition region (102) of an associated orbit (130). Preferably, the transition is performed gradually so that an abrupt reduction in system capacity is avoided. In another embodiment, individual orbital planes in the satellite system are dedicated for use with particular TDD frame structures. A subscriber thus communicates with one satellite in each of two planes during a connection.