Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1990-11-01
1993-06-01
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
370 941, 370 852, 370 60, H04B 7185
Patent
active
052164276
ABSTRACT:
A satellite communications system includes an orbiting communications satellite for relaying communications to and from a plurality of ground stations, and a network management center for making connections via the satellite between the ground stations in response to connection requests received via the satellite from the ground stations, the network management center being configured to provide both open-end service and closed-end service. The network management center of one embodiment is configured to provides both types of service according to a predefined channel access protocol that enables the ground stations to request the type of service desired. The channel access protocol may be configured to adaptively allocate channels to open-end service and closed-end service according to changes in the traffic pattern and include a free-access tree algorithm that coordinates collision resolution among the ground stations.
REFERENCES:
patent: 4504946 (1985-03-01), Raychaudhuri
patent: 4594706 (1986-06-01), Kobayashi
patent: 4688213 (1987-08-01), Raychaudhuri
patent: 4907224 (1990-03-01), Scoles et al.
Cheng Unjeng
Dessouky Khaled I.
Rafferty William
Wang Charles C.
Yan Tsun-Yee
Blum Theodore M.
California Institute of Technology
Hanson Loyal M.
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