Method for logging a radio module into a cellular radio network

• US 7,761,096 B2
• Filed: 04/29/2005
• Issued: 07/20/2010
• Est. Priority Date: 06/01/2004
• Status: Expired due to Fees

• Current Assignee: Gemalto M2M GmbH (Thales SA)
• Original Assignee: Gemalto M2M GmbH (Thales SA)
• Inventors: Pfitzmann, Dieter, Enderlein, Janos-Gerold
• Primary Examiner(s): Appiah; Charles N
• Assistant Examiner(s): Rideout; William F
• Application Number:
  US10/568,298
• Publication Number:
  US 20060286979A1
• Time in Patent Office: 1,908 Days
• Field of Search: 455/450, 455/435.1, 455/433
• US Class Current: 455/435.1
• CPC Class Codes: G08C 2201/42 Transmitting or receiving remote control signals via a network
• CPC Class Codes: H04W 52/0212 managed by the network, e.g. network or access point is master and terminal is slave
• CPC Class Codes: H04W 60/02 by periodical registration
• CPC Class Codes: H04W 60/04 using triggered events
• CPC Class Codes: H04W 60/06 De-registration or detaching
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method for logging a radio module into a cellular radio network, where the radio module automatically logs into the radio network when it is turned on by virtue of it transmitting a login message to the radio network, the radio network storing login data for the radio module and the login data being deleted again when the radio module logs out. In response to an autoreset signal in the radio a controlled autoreset is triggered in which the radio module temporarily turns off and then on again or temporally deactivates from the radio network and then registers again.

Claims

1. A method for logging a radio module into a cellular radio network, comprising:

receiving a login message from the radio module in the radio network;

storing login data for the radio module in the radio network;

deleting login data from the radio network when the radio module logs out;

internally generating an autoreset signal in the radio module; and

in response to an autoreset signal, an autoreset is automatically triggered in which the radio module is temporarily turned off and then on again or deactivates and registers again in the radio network.

2. The method as claimed in claim 1, wherein the autoreset signal is produced when the radio module is logged out of the radio network.

3. The method as claimed in claim 1, wherein the autoreset signal is produced in the radio module as soon as a first interval has elapsed.

4. The method as claimed in claim 3, wherein a second time interval is set for the radio module between turning off and turning on again in the event of the autoreset.

5. The method as claimed in claim 1, wherein the radio module turns on again immediately after turning off in the event of the autoreset.

6. The method as claimed in claim 4, wherein the first or second time interval can be set by radio command.

7. The method as claimed in claim 6, wherein maximum login time, after which the radio network logs out the radio module, or activity intervals are determined in which the radio module is supposed to be active, and these are adaptively used to determine the first or second time interval.

8. The method as claimed in claim 3, wherein the first time interval is restarted when the radio module sends data to the radio network or receives data from the radio network.

9. The method as claimed in claim 1, wherein data from volatile memory areas of the radio module is stored in nonvolatile form or outside the radio module before the autoreset for the radio module, and is written back to the volatile memory areas after it is turned on.

10. The method as claimed in claim 1, wherein the radio network is one of a GSM network, a GPRS network, a UMTS network, an EDGE network and WLAN.

11. A radio module for a cellular radio network, comprising:

a transceiver for sending and receiving messages;

a login device connected to the transceiver, wherein the login device produces a login message and transmits it via the transceiver when the radio module is turned on'"'"'

an auto reset trigger device which internally produces or receives an autoreset signal; and

an autoreset unit connected to the autoreset trigger device for receiving the autoreset signal and disconnecting and subsequently reconnecting the radio module using the login device when said autoreset signal is received.

12. The radio module as claimed in claim 11, wherein the autoreset trigger device transmits an autoreset signal when a logout message is received, and wherein the logout message comprises information that the login data for the radio module has been deleted from the radio network.

13. The radio module as claimed in claim 11, wherein the radio module comprises a first timer for detecting when a first time interval has elapsed which is connected to the autoreset trigger device, which can output an autoreset signal when the first time interval has elapsed.

14. The radio module as claimed in claim 11, wherein the radio module comprises a second timer that detects when a second time interval has elapsed which is connected to the autoreset unit, the latter being designed to turn the radio module on again only after a delay by the second time interval after it has been turned off in the event of the autoreset.

15. The radio module as claimed in claim 14, wherein the first or the second timer comprises an input and a time interval memory and stores a time interval which has been input using the input unit to define the first or second time interval.

16. The radio module as claimed in claim 15, wherein the input unit is connected to the transceiver and defines the first or second time interval by radio command.

17. The radio module as claimed in claim 16, wherein the radio module further comprises:

an activity memory that holds activity times for the radio module;

a maximum login time memory that holds a maximum possible login time for the radio module in the radio network; and

an evaluation unit;

wherein the evaluation unit accesses the activity memory and the maximum login time memory and addresses the input unit to adaptively define the first and second time intervals.

18. The radio module as claimed in claim 13, further comprising:

a time reset unit connected to the transceiver and to the first timer, wherein the time reset unit resets the first timer whenever data in the radio module has been sent to or received from the radio network.

19. The radio module as claimed in claim 11, further comprising:

a nonvolatile buffer store for buffering data during autoreset even when the power supply for the rest of the radio module is interrupted.

20. The radio module as claimed in claim 11, wherein the radio module is one of a GSM module, a GRPS module, a UMTS module, an EDGE module and a WLAN module.