| 摘要 |
<p>A communications system includes a first satellite system (1), such as a GSO system, that provides a terrestrial service area (2) with a broadcast communication service; a second satellite system (7), such as a NGSO system, that provides the terrestrial service area (2) with a two-way communication service; a bidirectional communications link (14) between the first satellite system (1) and the second satellite system (7), specifically between ground segment portions (3,8) thereof; and a user terminal (6) located in the terrestrial service area (2). The user terminal (6) has a transceiver for acquiring service from the communications system through the second satellite system (7) and further has a receiver for receiving the broadcast communication service from the first satellite system (1) in response to the acquired service. The merging of the functionality of different satellite-based systems, particularly- for mobile applications, provides a technique for identifying users and a technique for allowing users access to various networks. Further provided is an ability to charge reasonable amounts for access to bandwidth, and a multi-service capability with a single subscription. The cellular system, with its highly developed mobile roaming identification, registration, and authentication system, provides a means for enabling a user, even when roaming, to access broadcast services and to receive data from, for example, and Internet service provider (20). <IMAGE></p> |
