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, Raymond J Leopold: Dynamic signal routing. Motorola, Gregory J Gorrie, Robert M Handy, November 15, 1994: US05365520 (32 worldwide citation)

Data packets are delivered through a constellation of nodes to a termination unit. The node where a packet leaves the constellation is a terminal node. Each packet includes a routing code. When a node receives a packet, it examines the routing code to determine if that node might be the packet's ter ...


5
Theresa C Y Wang: Dynamic mapping apparatus for mobile unit acquisition and method therefor. Motorola, Gregory J Gorrie, October 8, 1996: US05563606 (29 worldwide citation)

A called subscriber unit's geographic location is provided by a gateway and translated to location coordinates of a global coordinate system. The gateway identifies an orbiting satellite communication station servicing the subscriber unit's location, and sends the subscriber unit's ID and location d ...


6
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 ...