Method and system for performing a predetermined operation related to a predetermined class of cellular sources

• US 6,108,537 A
• Filed: 09/24/1998
• Issued: 08/22/2000
• Est. Priority Date: 01/28/1991
• Status: Expired due to Term

• Current Assignee: Numerex Corporation (Sierra Wireless Incorporated)
• Original Assignee: Cellemetry, LLC (Sierra Wireless Incorporated)
• Inventors: Roach, Peter Owen Jr., Comer, Edward Irby
• Primary Examiner(s): Bost, Dwayne D.
• Assistant Examiner(s): GELIN, JEAN ALLAND
• Application Number:
  US09/160,512
• Time in Patent Office: 698 Days
• Field of Search: 455/432, 455/435, 455/433, 455/426, 455/410, 455/412, 455/512, 455/519, 455/518, 379/106.1, 379/142, 340/825.54, 340/311.11
• US Class Current: 455/426.1
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 68/12 Inter-network notification
• CPC Class Codes: H04W 76/40 for selective distribution or broadcast
• CPC Class Codes: H04W 8/22 Processing or transfer of terminal data, e.g. status or physical capabilities
• CPC Class Codes: H04W 84/022 One-way selective calling networks, e.g. wide area paging
• 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

A system for communicating data via a cellular network control channel of a cellular mobile radiotelephone system. The system includes a mobile switching center operable for receiving a registration signal from a registering cellular communications device. The registration signal includes identification information associated with the registering cellular communications device and a predefined data field containing data. The mobile switching center detects the presence of the identification information in the registration signal. In response to the identification information, the mobile switching center determines whether the registering cellular communications device is a member of a predetermined class of cellular sources, such as a class known as "roamer" units. If the registering cellular communications device is a member of a predetermined class of cellular sources, the mobile switching center extracts the data from the predefined data field and transmits the data to a data collection system, typically via a communication link between the mobile switching center and the data collection system. In turn, the data collection system can send the extracted data to a data processing system. Either the data collection system or data processing system can perform a predetermined operation associated with the predetermined class of cellular sources.

Claims

1. A method for performing a predetermined operation related to a predetermined class of cellular sources, comprising the steps of:

receiving a registration signal from a cellular communications device via a cellular network control channel, the registration signal including identification information associated with the cellular communications device;

detecting the presence of the identification information in the registration signal;

in response to the identification information, determining whether the cellular communications device is a member of a predetermined class of cellular sources; and

if the cellular communications device is a member of the predetermined class of cellular sources, performing a predetermined operation related to the predetermined class of cellular sources.

2. The method of claim 1, wherein:

the registration signal comprises a predefined data field containing data;

and

the predetermined operation comprises the steps of,

extracting the data from the predefined data field, and

transmitting the data to a data collection system.

3. The method of claim 2, further comprising the step of transmitting the data from the data collection system to a data processing system that is operative process the data.

4. The method of claim 1, prior to the step of receiving the registration signal from the cellular communications device, further comprising the step of:

transmitting a command signal to the cellular communications device, the command signal causing the cellular communications device to retrieve the data from a corresponding monitoring device and to transmit the registration signal to a mobile switching center.

5. The method of claim 1, prior to the step of receiving the registration signal from the cellular communications device, further comprising the steps of:

monitoring the cellular network control channel to detect a stream of busy idle bits for a predetermined time period, each of the busy idle bits indicating whether one of the cellular sources has initiated a cellular communication with a mobile switching center via the cellular network control channel;

determining the level of communications for the cellular network control channel based upon the status of the busy idle bits; and

transmitting the registration signal to the mobile switching center when the level of communications for the cellular network control channel is below a certain minimum threshold.

6. The method of claim 1, wherein the registration signal from the cellular communications device is an autonomous registration signal generated by the cellular communications device.

7. The method of claim 1, wherein the registration signal from the cellular communications device is a call origination signal generated by the cellular communications device.

8. The method of claim 2, wherein the cellular communications device receives the data from a monitoring device that collects selected data items from a remote data source.

9. The method of claim 2, wherein the predefined data field is associated with an electronic serial number assigned to the cellular communications device.

10. The method of claim 2, wherein the predefined data field is associated with a called party directory number.

11. A system for performing a predetermined operation related to a predetermined class of cellular sources, comprising:

a mobile switching center operable for,

receiving a registration signal from a cellular communications device via a cellular network control channel, the registration signal including identification information associated with the cellular communications device and a predefined data field containing data,

detecting the presence of the identification information in the registration signal,

in response to the identification information, determining whether the cellular communications device is a member of a predetermined class of cellular sources, and

if the remote data reporting device is a member of the predetermined class of cellular communications devices, performing a predetermined operation comprising extracting the data from the predefined data field and transmitting the extracted data to a data collection system; and

the data collection system functionally connected to the mobile switching center, the data collection system operable for,

receiving the extracted data from the mobile switching center, and

processing the extracted data.

12. The system of claim 11, further comprising:

a data processing system for receiving the extracted data from the data collection system and processing the extracted data;

a first communication link between the mobile switching center and the data collection system for carrying the extracted data from the mobile switching center to the data collection system; and

a second communication link between the data collection system and the data processing system for carrying the extracted data from the data collection system to the data processing system.

13. The system of claim 12, wherein the predefined data field is associated with a mobile identification number assigned to the cellular communications device.

14. The system of claim 12, wherein the predefined data field is associated with an electronic serial number assigned to the cellular communications device.

15. The system of claim 12, wherein the predefined data field is associated with a called party directory number.

16. The system of claim 12, wherein

the cellular communications device is functionally connected to a monitoring device;

the monitoring device is functionally connected to a remote data source;

the remote data source is operative to transmit a status signal to the monitoring device representing the occurrence of an event in the environment of the remote data source; and

in response to the status signal, the cellular communications device receives the data from the monitoring device and transmits the registration signal to the mobile switching center.

17. The system of claim 16, wherein:

the mobile switching center is operable for communicating with the cellular communications device and the cellular sources via the cellular network control channel; and

the cellular communications device,

monitors the cellular network control channel to detect a stream of busy idle bits for a predetermined time period, each of the busy idle bits indicating whether one of the cellular sources has initiated a cellular communication with a mobile switching center via the cellular network control channel,

determines the level of communications for the cellular network control channel based upon the status of the busy idle bits, and

transmits the registration signal to the mobile switching center when the level of communications for the cellular network control channel is below a certain minimum threshold.

18. The system of claim 17, wherein the cellular communications device conducts a predetermined operation in response to receiving command signals from the mobile switching center via the cellular network control channel.

19. The apparatus of claim 18, wherein the cellular communications device transmits the registration signal to the mobile switching center via the cellular network control channel in response to receiving one of the command signals via the cellular network control channel.

20. The apparatus of claim 19, wherein the cellular communications device monitors the corresponding remote data source and obtains the data for a certain monitoring time period in response to receiving one of the command signals via the cellular network control channel.

21. The apparatus of claim 16, wherein:

the remote data source includes a clock that outputs a clock signal upon expiration of a time interval; and

the cellular communications device is operative to receive the data from the monitoring device and to transmit the registration signal to the mobile switching center via the cellular network control channel in response to the clock signal.