1
Theresa C Y Wang, Steven H Moritz: Mobile unit tracking system. Motorola, Gregory J Gorrie, Robert M Handy, November 15, 1994: US05365451 (262 worldwide citation)

A communication network keeps track of the locations of mobile units which utilize the network. On powering up, the mobile units determine their current locations using signals broadcast, for example, by overhead satellites. They then send data communication messages to the network describing their ...


2
Theresa C Y Wang, Raymond J Leopold, Steven H Moritz: Call setup method for use with a network having mobile end users. Motorola, Harold C McGurk, Frederick M Fliegel, Robert M Handy, August 30, 1994: US05343512 (92 worldwide citation)

A distributed communication network includes switching offices (SOs), moving-orbit satellites, and subscriber information managers (SIMs). A population of mobile units (MUs) communicates through the network. A MU automatically determines its location and communicates with the network so that this in ...


3
Steven H Moritz, Ralph C Gregg Jr, Theresa C Y Wang: Cellular communications with scheduled handoffs. Motorola, Robert M Handy, Kevin K Johanson, January 9, 1996: US05483664 (43 worldwide citation)

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 switchi ...


4
Theresa C Y Wang, Steven H Moritz: Call processing using logical channel assignments. Motorola, Robert M Handy, Frederick M Fliegel, September 28, 1993: US05249181 (24 worldwide citation)

A communications network includes satellites, which serve as switching nodes and move in orbits about the earth. The network additionally includes stationary switching offices. Mobile communication units communicate with the network through the satellites using TDMA data packets and network control ...