Resources Contact Us Home
Multiple channel communications system

Image Number 2 for United States Patent #7336969.

A multi-channel communications system for communications between a mobile units and dispatch agencies through tower sites under control of a multi-channel communication controller. The method of communications used is time division multiple access with provisions for alternate methods. The mobile units and dispatch agencies have forms of identifications to route messages between the mobile units and dispatch agencies according to the forms of identification. The forms of identification are resolved from one form to another to operate with the alternate methods of communications. The mobile units are handed off from one communications channel to another by the multi-channel controller as channel loading conditions exceed a predetermined limit. Mobile units change tower sites as the geographic coverage of a tower site changes. Mobile units determine distance to a tower site by computing distance to a tower site by using GPS position information of the mobile unit and the known locations of the tower sites to compute signal strength.

  Recently Added Patents
Dual work function recessed access device and methods of forming
Transmission channel for ultrasound applications
System and method for data reconfiguration in an optical communication network
Method and apparatus for controlling cardiac resynchronization therapy using cardiac impedance
Print system
System and method for predicting remaining useful life of device components
Etch resistant clearcoat
  Randomly Featured Patents
Organic electroluminescence display apparatus
Periodontal barrier and method for aiding periodontal tissue regeneration
Bicycle gear selector mechanism
Universal printing system
Connection devices in vehicle seats
Openable structure for housing
Mobile phone
PRO19646 polypeptides
Door comprising a locking device
Method and system for determining delays between a primary site and diverse site in a satellite communication system