Telecommunications – Carrier wave repeater or relay system – Portable or mobile repeater
Patent
1993-07-26
1996-01-09
Eisenzopf, Reinhard J.
Telecommunications
Carrier wave repeater or relay system
Portable or mobile repeater
455 332, 455 541, 455 121, H04B 7185, H04Q 700
Patent
active
054836646
ABSTRACT:
A cellular communications network includes satellites which project cells toward the earth. The satellites and cells move relative to the earth. When a call is being set up to a subscriber unit, data describing the subscriber unit's location are sent to a switching office of the network. The switching office generates a schedule which forecasts when movement of the cells will cause the subscriber unit to cross cell boundaries. During an ongoing call, the subscriber unit 5 determines when scheduled boundary crossings occur. So long as an adequate signal is present in a scheduled cell and network capacity exists in the scheduled cell to handle the call, the call will be handed off to the scheduled cell. The subscriber unit also monitors signal strengths to determine when a traffic channel's signal is getting weak and when an alternate cell's signal is stronger.
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Gregg, Jr. Ralph C.
Moritz Steven H.
Wang Theresa C. Y.
Eisenzopf Reinhard J.
Handy Robert M.
Johanson Kevin K.
Motorola Inc.
Nguyen Lee
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