Intelligent wireless multicast network

• US 20070018851A1
• Filed: 10/30/2003
• Published: 01/25/2007
• Est. Priority Date: 10/30/2002
• Status: Active Grant

• Current Assignee: Wixxi Technologies LLC
• Original Assignee: Veco Gas Technology, Inc.
• Inventors: Ocondi, Mark
• Granted Patent: US 7,446,673 B2
• Time in Patent Office: Days
• US Class Current: 340/870.110
• CPC Class Codes: G08C 17/02 using a radio link
• CPC Class Codes: G08C 2201/42 Transmitting or receiving remote control signals via a network
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Abstract

Disclosed is a supervisory control and data acquisition (SCADA) system using a spread spectrum or licensed frequency data radio network and communication method therefore allowing multiple slave hosts and slave devices or remote terminal unit (RTU) the ability to communicate data connectivity in a wireless network environment.

Claims

1. Wireless data communication systems, comprising:

a master host computer for directing wireless data messages, performing remote control and measurement of remote terminal units (RTU)'"'"'s;

a data radio communication network for connectivity between master and slave devices;

multiple slave host computers for performing remote control and measurement of RTUs; and

a dial-in phone modem and or cellular modem for connectivity of slave host computers outside of the data radio communication network.

2. The wireless data communication system as claimed in claim 1, master host computer includes a spread spectrum or licensed frequency data radio;

and a computer system.

3. The wireless data communication system as claimed in claim 1, wherein data radio communication network includes:

a spread spectrum or licensed frequency data radio;

one master radio connected to the master host computer to allow connectivity to all slave radios;

one or more repeater radio to allow for expansion on the radio network; and

slave radios connected to RTUs, slave host computers, cellular phone modems and dial-in phone modems.

4. The wireless data communication system as claimed in claim 1, multiple slave host computers includes:

a spread spectrum or licensed frequency data radio; and

a computer system.

5. A method of allowing multiple slave host computers on the same data radio communication network to communicate simultaneously, comprising the steps of:

linking a master host computer to a radio communication network directing data messages on the network;

receiving and repeating any data messages at a master host computer that are not intended for the master host computer from any slave host computer; and

transmitting repeated messages from the master host computer are received by all slave radios in the radio network by the RTUs to thereby allow communications between multiple slave host computers and RTUs on the radio network.

6. (canceled)