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Class Information
Number: 455/520
Name: Telecommunications > Transmitter and receiver at separate stations > Plural transmitters or receivers (i.e., more than two stations) > Central station (e.g., master, etc.) > To or from mobile station > Having talk group > On-site or multi-site trunking
Description: Subject matter which includes co-existing trunking systems operating in the same geographical area or a trunking system having more than one base station.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7606149 |
Method and system for alert throttling in media quality monitoring |
Oct. 20, 2009 |
| 7570922 |
System and method for automated radio frequency safety and regulatory compliance at wireless transmission sites |
Aug. 4, 2009 |
| 7567816 |
Radio communications system and method for radio communications |
Jul. 28, 2009 |
| 7561869 |
Push to talk (PTT) service mobile communication system and method |
Jul. 14, 2009 |
| 7555517 |
Acquiring and processing data associated with an incident among multiple networked computing apparatuses |
Jun. 30, 2009 |
| 7546135 |
Extended addressing for a digital trunked radio system |
Jun. 9, 2009 |
| 7546086 |
Ad-hoc messaging between wireless devices |
Jun. 9, 2009 |
| 7536196 |
Method for preventing an unauthorized device from operating in an 800 MHz trunked radio communications system using channels 559 to 320 |
May. 19, 2009 |
| 7532909 |
System and method for providing dedicated paging channels for walkie-talkie services |
May. 12, 2009 |
| 7509131 |
Proximity detection using wireless signal strengths |
Mar. 24, 2009 |
| 7463900 |
Discontinuous reception method for mobile communication terminal device and mobile communication terminal device |
Dec. 9, 2008 |
| 7444139 |
Method and system for use of intelligent network processing to prematurely wake up a terminating mobile station |
Oct. 28, 2008 |
| 7437180 |
Over-the-air signaling service method and apparatus |
Oct. 14, 2008 |
| 7428422 |
Method and system for setting application settings for a push-to-talk service |
Sep. 23, 2008 |
| 7415284 |
Methods of transmitting a message to a message server in a push-to-talk network |
Aug. 19, 2008 |
| 7412251 |
Wireless communication apparatus, wireless communication system adopting the same and communication method thereof |
Aug. 12, 2008 |
| 7389116 |
System, method, and computer program product for short message service (SMS) rating |
Jun. 17, 2008 |
| 7366533 |
Methods for providing access to wireless resources in a trunked radio communication system |
Apr. 29, 2008 |
| 7359725 |
Push-to-talk apparatus and method for communication between an application server and media resource function processor |
Apr. 15, 2008 |
| 7353038 |
Method and apparatus for indicating an expected level of quality in a private push to talk (PTT) network |
Apr. 1, 2008 |
| 7343171 |
Method and system for interrupting a dispatch call |
Mar. 11, 2008 |
| 7336958 |
Data transmission path establishing method, radio communication network system, and sensor network system |
Feb. 26, 2008 |
| 7333826 |
Voice hub processing |
Feb. 19, 2008 |
| 7317918 |
Method for domain name service (DNS) in a wireless ad hoc network |
Jan. 8, 2008 |
| 7310517 |
Techniques for archiving audio information communicated between members of a group |
Dec. 18, 2007 |
| 7295851 |
Methods for setting up dispatch calls |
Nov. 13, 2007 |
| 7295853 |
Methods and apparatus for the immediate acceptance and queuing of voice data for PTT communications |
Nov. 13, 2007 |
| 7283835 |
Method of providing extended group call service |
Oct. 16, 2007 |
| 7280807 |
Initiator device capable of two-way half-duplex communication with multiple recipient devices |
Oct. 9, 2007 |
| 7231211 |
Apparatus and method for monitoring a trunked radio communications system |
Jun. 12, 2007 |
| 7184790 |
Method and apparatus for establishing a talk group |
Feb. 27, 2007 |
| 7164921 |
Auxiliary switch activated GPS-equipped wireless phone |
Jan. 16, 2007 |
| 7149532 |
Positional information providing method and positional information providing system |
Dec. 12, 2006 |
| 7139586 |
Method and system for targeted broadcasting |
Nov. 21, 2006 |
| 7136664 |
Method for determining a control channel in a trunked radio communications system utilizing a scan list |
Nov. 14, 2006 |
| 7127266 |
System and method for efficient media resource allocation |
Oct. 24, 2006 |
| 7092721 |
Reducing delay in setting up calls |
Aug. 15, 2006 |
| 7089026 |
Method for determining a control channel in a trunked radio communications system |
Aug. 8, 2006 |
| 7082314 |
Intercom system |
Jul. 25, 2006 |
| 7058420 |
Power automation system using trunked radio system network and control method thereof |
Jun. 6, 2006 |
| 7035657 |
Method and apparatus for supporting application-layer media multicasting |
Apr. 25, 2006 |
| 6999783 |
Method for creating a dynamic talk group |
Feb. 14, 2006 |
| 6999782 |
Method for joining dispatch calls |
Feb. 14, 2006 |
| 6952592 |
Method and apparatus for limiting a transmission in a dispatch system |
Oct. 4, 2005 |
| 6904285 |
Method and apparatus for interurban dispatch private calling |
Jun. 7, 2005 |
| 6885874 |
Group location and route sharing system for communication units in a trunked communication system |
Apr. 26, 2005 |
| 6882855 |
Method and apparatus for CDMA soft handoff for dispatch group members |
Apr. 19, 2005 |
| 6882856 |
Method for dynamically configuring group calls in a radio system |
Apr. 19, 2005 |
| 6792279 |
Mobile terminal for transmission diversity CDMA communication system |
Sep. 14, 2004 |
| 6748230 |
Method and apparatus for updating announcement group information |
Jun. 8, 2004 |
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