Method and apparatus for bridging talk groups in public/private communication systems

• US 7,181,234 B2
• Filed: 09/17/2002
• Issued: 02/20/2007
• Est. Priority Date: 09/17/2002
• Status: Active Grant

• Current Assignee: Motorola Solutions, Inc.
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Korneluk, Jose E., Richards, Scott H., Larson, Brian K., Wong, Chin Pan, Monks, Deborah, Jackson, Charles
• Primary Examiner(s): Gesesse; Tilahun
• Application Number:
  US10/245,221
• Publication Number:
  US 20040203978A1
• Time in Patent Office: 1,617 Days
• Field of Search: 455/404.1, 455/404.2, 455/416, 455/417, 455/414.1, 455/414.4, 455/552.1, 455/554.1, 455/554.2, 455/555, 455/556.1, 455/556.2, 455/557, 455/507, 455/508, 455/517, 455/518, 455/519, 455/520, 455/521, 455/553.1, 455/11.1, 455/554, 340/287, 379/37, 370/466, 370/332, 370/328, 370/432
• US Class Current: 455/519
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 4/08 User group management
• CPC Class Codes: H04W 4/10 Push-to-Talk [PTT] or Push-On-Call services
• CPC Class Codes: H04W 76/45 for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services
• CPC Class Codes: H04W 84/08 Trunked mobile radio systems
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 88/16 Gateway arrangements
• CPC Class Codes: H04W 88/184 Messaging devices, e.g. message centre
• CPC Class Codes: H04W 92/02 Inter-networking arrangements

Abstract

A communication system (100) for bridging talk groups includes private network communication devices (102) operating within a private network system, and public network communication devices (110, 122, 112) operating within a public network system. At least one communication subsystem (104) is operable with both the private and public network systems. The communication subsystem (104) relays information between the private network communication devices (102) and the public network communication devices (110, 122, 112).

Claims

1. A communication system, comprising:

a first talk group operating over a private radio network;

a second talk group operating over a public radio network;

at least one communication device in the first talk group having public network capability, the at least one communication device being either portable or mobile;

the at least one communication device relaying audio from the first talk group to the second talk group over the public network; and

wherein the at least one communication device includes;

a first receiver operable in the private network; and

a first transmitter operable in the private network;

a second receiver operable in the public network;

a second transmitter operable in the public network; and

wherein audio received from the private network at the first receiver is ported via an electrical link to the second transmitter;

and

wherein audio received from the public network at the second receiver is ported via the electrical link to the first transmitter.

2. The communication system of claim 1, wherein the electrical link is wireless.

3. The communication device of claim 1, wherein the electrical link is wired.