System and method for monitoring remote devices with a dual-mode wireless communication protocol

• US 8,031,650 B2
• Filed: 03/03/2004
• Issued: 10/04/2011
• Est. Priority Date: 03/03/2004
• Status: Active Grant

• Current Assignee: Statsignal IPC LLC (Statsignal)
• Original Assignee: SIPCO LLC (Ideahub, Inc.)
• Inventors: Stevens, Candida, Huff, Richard, Aldoretta, David P., Petite, Thomas D.
• Primary Examiner(s): Edouard; Patrick
• Assistant Examiner(s): HO, HUY C
• Application Number:
  US10/792,608
• Publication Number:
  US 20050195775A1
• Time in Patent Office: 2,771 Days
• Field of Search: 375/261, 340/870.11, 370/352, 370319-320
• US Class Current: 370/320
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

The present invention is generally directed to systems and device for monitoring remote device with a wireless, dual-mode communication protocol. As such, a representative embodiment is a system for monitoring and controlling remote devices. The system includes a first- and a second remote device; and a first and a second wireless transceiver integrated with the respective remote devices. The wireless transceivers are configured to communicate with at least one of a spread-spectrum communication protocol and a fixed-frequency communication protocol.

Claims

1. A system for monitoring and controlling remote devices, said system comprising:

a first, a second and a third remote devices;

a first, a second and a third wireless transceivers integrated with said respective remote devices, wherein said wireless transceivers are configured to communicate with at least one of a spread-spectrum communication protocol and a fixed-frequency communication protocol;

the first wireless transceiver and the third wireless transceivers each comprising a logic element configured to;

transmit or receive a first portion of a communication frame at a first frequency channel, wherein the first portion of the communication frame comprises a data channel index that indicates a second frequency channel;

switch to the second frequency channel;

transmit or receive a second portion of the communication frame at the second frequency channel;

the first wireless transceiver is configured to switch between communicating in said spread spectrum communication protocol and said fixed frequency communication protocol said communication protocols by determining if after traversing through a first set of designated channels for communicating in one of said communication protocols and not receiving a communication frame in one of said designated channels; and

the first wireless transceiver and the second wireless transceiver are configured to communicate in the fixed-frequency communication protocol by transmitting or receiving a preamble and data portion of a communication frame at a third frequency channel.

2. The system of claim 1, wherein said wireless transceivers are further configured to communicate with a first modulation scheme when communicating in said spread-spectrum communication protocol and to communicate with a second modulation scheme when communicating in said fixed-frequency communication protocol.

3. The system of claim 2, wherein said first modulation scheme is the same as the second modulation scheme.

4. The system of claim 2, wherein said first modulation scheme is a frequency modulation scheme.

5. The system of claim 2, wherein said second modulation scheme is an amplitude modulation scheme.

6. The system of claim 1, wherein said wireless transceivers are further configured to communicate at a first radiating-power level when communicating in said spread-spectrum communication protocol and to communicate at a second radiating-power level when communicating in said fixed-frequency communication protocol.

7. The system of claim 6, wherein said first radiating-power level is higher then said second radiating-power level.

8. The system of claim 1, wherein said first and second remote devices are utility meters, and wherein said wireless transceivers are configured to communicate at least data corresponding to the measurements made by said utility meters.

9. The system of claim 1, further comprising:

a local area network (LAN) of wireless transceivers, wherein said first and second wireless transceivers are part of said LAN; and

at least a first gateway in communication with said LAN.

10. The system of claim 9, further comprising:

a back-end system in communication with said at least first gateway via a wide area network (WAN), such that data is passed from each wireless transceiver in said LAN to said back-end system via said at least first gateway and WAN.

11. The system of claim 10, wherein said back-end system comprises:

a network server configured to remotely control communication functions of said wireless transceivers in said LAN.

12. The system of claim 11, wherein said network server is configured to remotely control a modulation scheme in which any of said wireless transceivers communicate in either communication protocol.

13. The system of claim 11, wherein said network server is configured to remotely control a radiating-power level at which any of said wireless transceivers communicate in either communication protocol.

14. A system for monitoring the utility consumption measured by a plurality of utility meters, said system comprising:

a plurality of utility meters;

a network of wireless RF transceivers for communicating utility consumption data, wherein said network of wireless RF transceivers comprises a first dual-mode transceiver, a first fixed-frequency transceiver, and a first spread-spectrum transceiver;

the first spread-spectrum transceiver and first dual-mode transceiver each having a data channel index table stored on a memory element, the data channel index table correlating a plurality of data channel indexes to a plurality of data channel frequencies;

the first spread-spectrum transceiver and the first dual-mode transceiver each having a logic element for communicating in a spread spectrum protocol over a plurality of acquisition channel frequencies and a plurality of data channel frequencies, the logic element configured to;

prepare a communication message having a preamble portion and a separate data portion;

determine an acquisition channel frequency to transmit the preamble portion and a data channel frequency to transmit the data portion;

insert into the preamble portion a data channel index corresponding to the data channel frequency;

transmit the preamble portion over the acquisition channel frequency and transmit the data portion over the data channel frequency;

receive the preamble portion over the acquisition channel frequency;

ascertain the data channel frequency by comparing the data channel index in the preamble portion to the data channel index table stored in memory; and

receive the data portion by switching reception to the data channel frequency ascertained from the data channel index;

the first dual-mode transceiver is configured to switch between communicating in a fixed-frequency communication protocol or said spread spectrum communication protocol by determining if after traversing through a first set of designated channels for communicating in said spread spectrum communication protocols and not receiving a communication frame in one of said designated channels;

the first fixed-frequency transceiver and the first dual-mode transceiver are configured to communicate in a fixed-frequency communication protocol by transmitting or receiving a preamble and data portion of a communication frame at a third frequency channel;

a first gateway in communication with each wireless RF transceiver either directly or via other wireless RF transceivers, the first gateway relaying data from said network of wireless RF transceivers to a back-end system;

the first gateway configured to recover the data channel index from the preamble of the first portion of the communication frame and switch to a data channel frequency designated by the data channel index to receive the data portion of the communication frame.

15. The system of claim 14, wherein a first portion of said network of wireless RF transceivers are integrated with individual ones of said plurality of utility meters and a second portion of said network of wireless RF transceivers are stand-alone RF transceivers.

16. The system of claim 14, wherein said at least first gateway is a dual-mode gateway and is configured to communicate in the fixed-frequency communication protocol or the spread-spectrum communication protocol, depending on the protocol in which an intended transceiver communicates.