Method for transferring private data transmissions from a trunking communication system to a cellular communication

• US 5,239,674 A
• Filed: 11/05/1990
• Issued: 08/24/1993
• Est. Priority Date: 11/05/1990
• Status: Expired due to Term

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Grube, Gary W., Comroe, Richard A.
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): PHAM, CHI H
• Application Number:
  US07/608,879
• Time in Patent Office: 1,023 Days
• Field of Search: 455/33, 455/34, 455/53, 455/54, 455/56, 455/76, 455/89, 455/33.1-33.4, 455/34.1, 455/34.2, 455/53.1, 455/54.1, 455/54.2, 455/56.1, 379/59, 379/60, 379/63
• US Class Current: 455/426.1
• 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 84/08 Trunked mobile radio systems
• CPC Class Codes: H04W 92/02 Inter-networking arrangements

Abstract

In a geographic region that contains a trunking communication system and a cellular communication system, wherein the coverage area of each system substantially overlaps, a method that transfers a private data transmission from the trunking communication system to the cellular communication is disclosed. When a data transmission unit is prompted to transmit data, it transfers its affiliation from the trunking communication system to the cellular communication system. Once affiliated with the cellular communication system, the data transmission unit transfers its data via the cellular communication system. The trunking communication system detects the requested data and routes the requested data to the appropriate data target. Once the data transmission unit has transmitted the requested data, it transfers its affiliation back to trunking communication system.

Claims

1. In a geographic region that contains at least one trunking communication system and at least one cellular communication system, wherein the at least one trunking communication system and the at least one cellular communication system have substantially overlapping coverage areas, wherein the at least one trunking communication system is operably coupled to the at least one cellular communication system, and wherein at least some of a plurality of data transmission units are affiliated with at least one trunking communication system and are operable in either the at least one trunking communication system or the at least one cellular communication system, a method for a data transmission unit of the at least some of the plurality of data transmission units to communicate data with a data target that is affiliated with the at least one trunking communication system, the method comprises the steps of:

a) transferring affiliation of the data transmission unit from the at least one trunking communication system to the at least one cellular communication system;

b) transmitting a data packet to the data target by the data transmission unit via the at least one cellular communication system.

2. The method of claim 1 further comprises the step of transferring affiliation of the data transmission unit from the at least one cellular communication system to the at least one trunking communication unit when the data packet has been transmitted.

3. In the method of claim 1, step (a) further comprises the substep of:

a1) prompting, by a communication channel controller of the at least one trunking communication system, the data transmission unit to transfer its affiliation to the at least one cellular communication system; and

a2) transferring, by the data transmission unit, its affiliation from the at least one trunking communication system to the at least one cellular communication system.

4. In a geographic region that contains at least one trunking communication system and at least one cellular communication system, wherein the at least one trunking communication system and the at least one cellular communication system have substantially overlapping coverage areas, wherein the at least one trunking communication system is operably coupled to the at least one cellular communication system, and wherein at least some of a plurality of data transmission units are affiliated with the at least one trunking communication system and are operable in either the at least one trunking communication system or the at least one cellular communication system, a method for communicating data between a data transmission unit of the at least some of the plurality of data transmission units and a data target that is affiliated with the at least one trunking communication system, the method comprises the steps of:

a) generating a data transmission request for the data transmission unit;

b) transferring affiliation of the data transmission unit from the at least one trunking communication system to the at least one cellular communication system when the data transmission request is processed;

c) transmitting a data packet via at least one control channel of the at least one cellular communication system to the trunking communication system; and

d) receiving the data packet by the data target via the at least one trunking communication system.

5. In the method of claim 4, step (a) further comprises generating, by the data transmission unit, the data transmission request.

6. In a geographic region that contains at least one trunking communication system and at least one cellular communication system, wherein the at least one trunking communication system and the at least one cellular communication system have substantially overlapping coverage areas, wherein the at least one trunking communication system is operably coupled to the at least one cellular communication system, and wherein at least some of a plurality of data transmission units are affiliated with the at least one trunking communication system and are operable in either the at least one trunking communication system or the at least one cellular communication system, a method for a communication channel controller of the at least one trunking communication system to control transmission of a data packet between a data transmission unit of the at least some of the plurality of data transmission unit and a data target, the method comprises the steps of:

a) transmitting a data transmission request to the data transmission unit, wherein the data transmission request instructs the data transmission unit to transfer affiliation from the at least one trunking communication system to the at least one cellular communication system and to transmit a data packet when the data transmission unit is affiliated with the at least one cellular communication system;

b) deciphering the data packet to identify the data target; and

c) instructing the data target to transfer its affiliation from the trunking communication system to the cellular communication system, such that it receives the data packet via the at least one cellular communication system.

7. In a geographic region that contains at least one trunking communication system and at least one cellular communication system, wherein the at least one trunking communication system and the at least one cellular communication system have substantially overlapping coverage areas, wherein the at least one trunking communication system is operably coupled to the at least one cellular communication system, and wherein at least some of a plurality of data transmission units are affiliated with the at least one trunking communication system and are operable in either the at least one trunking communication system or the at least one cellular communication system, a method for a data transmission unit of the at least some of the plurality of data transmission units to receive data from the at least one trunking communication system, the method comprises the steps of:

a) receiving a request from the at least one trunking communication system to transfer affiliation from the at least one trunking communication system to the at least one cellular communication system;

b) transferring affiliation to the at least one cellular communication system; and

c) while affiliated with the cellular communication system, receiving a data packet from the at least one trunking communication system via the at least one cellular communication system.