Mobile communication system exchanging state information and operation method thereof

• US 20040097224A1
• Filed: 10/06/2003
• Published: 05/20/2004
• Est. Priority Date: 11/18/2002
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lim, Guk-Chan
• Granted Patent: US 7,689,212 B2
• Time in Patent Office: Days
• US Class Current: 455/425
• CPC Class Codes: H04M 2207/18 wireless networks
• CPC Class Codes: H04M 3/42 Systems providing special services or facilities to subscribers specially adapted for wireless communication networks H04W4/00
• CPC Class Codes: H04M 3/42093 Notifying the calling party of information on the called or connected party
• CPC Class Codes: H04M 3/42365 Presence services providing information on the willingness to communicate or the ability to communicate in terms of media capability or network connectivity
• CPC Class Codes: H04W 76/18 Management of setup rejection or failure

Abstract

A system and method for managing calls in a mobile communication system transmits information indicative of an operational state of a first mobile terminal to a second mobile terminal for display. The first terminal may be a called terminal and the second terminal a calling terminal. A user of the second terminal can therefore recognize a reason for a communication blockage if a call between the first and second terminals is lost.

Claims

1. A mobile communication system, comprising:

a base station; and

a first mobile terminal which transmits state information of the first mobile terminal to the base station, wherein the base station transmits the state information to a second mobile terminal.

2. The system of claim 1, wherein the base station transmits the state information to the second mobile terminal when a call connection between the first and second mobile terminals is terminated.

3. The system of claim 1, wherein the base station receives state information of the second mobile terminal and transmits the state information of the second mobile terminal to the first mobile terminal.

4. The system of claim 3, wherein the first mobile terminal comprises:

a display which displays the state information of the second mobile terminal received from the base station;

a memory which stores a call list which includes a phone number of the second mobile terminal;

a key panel including a call termination button;

a detecting sensor for judging whether a flip or a folder of the first mobile terminal is opened;

a timer which counts pre-set time after a call is released because of a network failure; and

an MSM unit which controls transmission of the state information of the first mobile terminal to the base station, senses an RSSI when a call connection between the first and second mobile terminals is released because of a network failure, and performs an automatic call connection function in response to the second call connection release.

5. The system of claim 1, wherein the base station includes a memory for storing the state information received from the first mobile terminal.

6. A method of managing communications in a mobile communication system, comprising:

storing, in a base station, state information transmitted from a first mobile terminal;

monitoring a call connection between the first mobile terminal and a second mobile terminal; and

transmitting the stored state information transmitted from the first mobile terminal to the second mobile terminal when the call connection between the first and second mobile terminals is terminated.

7. The method of claim 6, wherein the storing step further comprising:

receiving an originating signal from the second mobile terminal;

transferring a terminating signal to the first mobile terminal;

receiving the state information from the first mobile terminal in response to the terminating signal.

8. The method of claim 6, wherein the monitoring step comprises:

periodically receiving state information from the first mobile terminal and updating previously stored state information; and

sensing whether a call interruption has occurred because of a network failure.

9. The method of claim 8, further comprising:

automatically transmitting a recall signal when the call interruption is sensed.

10. The method of claim 6, wherein the transmitting step comprises:

receiving a call termination message;

transferring the stored state information transmitted from the first mobile terminal to the second mobile terminal in response to the call termination message.

11. The method of claim 10, wherein the call termination message is generated by a call termination button of a key panel unit of the first mobile terminal or as a result of a folder or flip of the first mobile terminal being closed.

12. A method of managing calls in a mobile communication system, comprising:

connecting a call between an originating side terminal and a receiving side terminal;

periodically storing state information transmitted from at least one of the originating side and receiving side terminals in a base station;

monitoring a call connection between the originating side and receiving side terminals;

if the originating side and receiving side terminals are in a call connection state, storing status information for each of the terminals;

if the call connection between the terminals is interrupted, checking whether the call has been interrupted because of a network failure;

if the call has been interrupted because of a network failure, automatically attempting a recall from the originating side terminal;

if a call termination message is received from the originating side terminal or from the receiving side terminal, releasing the call connection between the terminals at the base station; and

transmitting the state information of one of the originating side and receiving side terminals to the other of the originating side and receiving side terminals after the call connection release.

13. The method of claim 12, wherein the call connecting step comprises:

transferring an originating signal from the originating side terminal to the base station;

transferring a terminating signal from the base station to the receiving side terminal; and

transferring a response message from the receiving side terminal to the base station in response to the terminating signal, thereby forming a traffic channel.

14. The method of claim 12, wherein the state information includes one of battery voltage information, an RSSI, and ON/OFF information of at least one of the terminals.

15. The method of claim 12, wherein the call termination message is generated by a call termination button of a key panel unit of one of the terminals or as a result of detection of a folder or a flip of one of the terminals closing.

16. The method of claim 12, wherein the recall attempting step comprises:

checking whether the call connection has been interrupted because of a network failure;

starting a timer;

judging whether a call termination message has been received;

monitoring an RSSI; and

transmitting a recall signal if the RSSI is greater than a predetermined reference value.

17. The method of claim 16, wherein the recall signal transferring step includes:

paging a phone number stored in a memory unit of the originating side terminal; and

transmitting an originating call.

18. The method of claim 17, wherein if the timer elapses or a call termination message is received, terminating the recall attempting step of the originating side terminal.

19. The method of claim 12, wherein transmitting the state information comprises:

transmitting the state information of the originating side terminal stored in the base station to the receiving side terminal; and

transmitting the state information of the receiving side terminal to the originating side terminal.

20. The method of claim 19, wherein transmitting the state information comprises:

displaying the received state information on a display unit.

21. A method of managing calls in a mobile communication system, comprising:

connecting a call between an originating side terminal and a receiving side terminal;

transmitting state information of the originating side terminal to a base station;

checking whether a call termination message is input from a user in response to a call interruption;

sensing whether an RSSI is restored to a level sufficient to make a call available;

if the RSSI is restored, automatically attempting a recall based on a phone number stored in a memory;

when the call to the receiving side terminal is terminated, receiving state information of the receiving side terminal; and

displaying the state information on the originating side terminal.

22. The method of claim 21, further comprising:

continuously transmitting the state information of the originating side terminal to the base station; and

updating a memory of the base station with the continuously transmitted state information.

23. The method of claim 21, further comprising:

starting a timer when the call interruption is detected; and

judging that the call interruption resulted from a network failure when the timer expires.

24. The method of claim 21, wherein the call termination message is generated by a call termination button of a terminal key panel unit or as a result of detection of a terminal folder or flip closing.

25. The method of claim 21, wherein if the timer elapses or the call termination message is input, the originating side terminal terminates the recall attempting step and then terminates a call to the receiving side terminal.

26. A method of managing calls in a mobile communication system, comprising:

connecting a call between a receiving side terminal and an originating side terminal through a base station;

receiving state information of the receiving side terminal in the base station;

generating a call termination message;

receiving state information of the originating side terminal in the base station; and

displaying state information of the originating side terminal.

27. The method of claim 26, further comprising:

updating the base station with state information from the receiving side terminal.

28. The method of claim 26, wherein the call termination message is generated from the receiving side terminal or transmitted from the base station.

29. The method of claim 28, wherein the call termination message is generated by a call termination button of a terminal key panel unit or as a result of detection of a terminal folder or flip closing.

30. A method for managing calls in a mobile communications system, comprising:

determining an operational state of a first mobile terminal; and

transmitting information indicative of the operational state to a second mobile terminal.

31. The method of claim 30, wherein the first mobile terminal is a called terminal and the second mobile terminal is a calling terminal.

32. The method of claim 30, further comprising:

displaying the operational state information on the second mobile terminal.

33. The method of claim 30, wherein the transmitting step includes:

transmitting the operational state information to a base station; and

transmitting the operational state information from the base station to the second mobile terminal.

34. The method of claim 33, wherein the transmitting step further includes:

detecting termination of a call between the first and second mobile terminals; and

transmitting the operational state information from the base station to the second mobile terminal in response to the detected call termination.

35. The method of claim 33, wherein the transmitting step includes:

detecting a network failure during a call between the first and second mobile terminals; and

automatically transmitting a recall request from the second mobile terminal to the first mobile terminal in response to detection of the temporary network failure.

36. The method of claim 35, wherein the recall request is automatically transmitted based on a last-stored phone number stored in the second mobile terminal, said last-stored phone number corresponding to the first mobile terminal.

37. The method of claim 30, wherein the operational state information is indicative of a low battery voltage condition of the first mobile terminal.

38. The method of claim 30, wherein the operational state information is indicative of the first terminal being turned off.

39. The method of claim 30, wherein the operational state information is indicative of a low signal strength condition experienced by the first mobile terminal.

40. A method for managing calls in a mobile communications system, comprising:

receiving information indicative of an operational state of a first mobile terminal; and

outputting the operational state information on a second mobile terminal.

41. The method of claim 40, wherein the first mobile terminal is a called terminal and the second mobile terminal is a calling terminal.

42. The method of claim 40, further comprising:

displaying the operational state information on the second mobile terminal.

43. The method of claim 40, wherein the receiving step includes:

receiving the operational state information in a base station; and

transmitting the operational state information from the base station to the second mobile terminal.

44. The method of claim 43, wherein the transmitting step includes:

detecting termination of a call between the first and second mobile terminals; and

transmitting the operational state information from the base station to the second mobile terminal in response to the detected call termination.

45. The method of claim 43, wherein the transmitting step includes:

detecting a network failure during a call between the first and second mobile terminals; and

automatically transmitting a recall request from the second mobile terminal to the first mobile terminal in response to detection of the temporary network failure.

46. The method of claim 45, wherein the recall request is automatically transmitted based on a last-stored phone number stored in the second mobile terminal, said last-stored phone number corresponding to the first mobile terminal.

47. The method of claim 40, wherein the operational state information is indicative of a low battery voltage condition of the first mobile terminal.

48. The method of claim 40, wherein the operational state information is indicative of the first terminal being turned off.

49. The method of claim 40, wherein the operational state information is indicative of a low signal strength condition experiences by the first mobile terminal.

50. A method for managing calls in a mobile communications system, comprising:

receiving information indicative of an operational state of a first mobile terminal; and

transmitting the operational state information to a second mobile terminal.

51. The method of claim 50, wherein the first mobile terminal is a called terminal and the second mobile terminal is a calling terminal.

52. The method of claim 50, wherein the receiving and updating steps are performed in a base station.

53. The method of claim 50, further comprising:

detecting termination of a call between the first and second mobile terminals; and

performing the transmitting step after said call termination.

54. The method of claim 50, further comprising:

storing the operational state information in a base station memory; and

updating the stored operational state information with new operational state information transmitted from the first mobile terminal during a call with a second mobile terminal.

55. A mobile communication terminal, comprising:

a detector which detects an operational state of the terminal; and

a transmitter which transmits information indicative of the operational state of the terminal to a base station during a call between the terminal and another terminal.

56. The terminal of claim 55, wherein the operational state information is indicative of a low battery voltage condition of the terminal.

57. The terminal of claim 55, wherein the operational state information is indicative of the terminal being turned off.

58. The terminal of claim 55, wherein the operational state information is indicative of a low signal strength condition experienced by the terminal.

59. A mobile communication terminal, comprising:

a receiver which receives information indicative of an operational state of another mobile terminal; and

an output unit which outputs the operational state information on a second mobile terminal.

60. The terminal of claim 59, wherein the output unit is a display which displays the operational state information.

61. The terminal of claim 59, wherein the operational state information is indicative of a low battery voltage condition of the other terminal.

62. The terminal of claim 59, wherein the operational state information is indicative of the other terminal being turned off.

63. The terminal of claim 59, wherein the operational state information is indicative of a low signal strength condition experienced by the other terminal.

64. The terminal of claim 59, further comprising:

a detector which detects an interruption of a call with the other terminal; and

a processor which automatically transmits a recall signal based on the detected call interruption.

65. The terminal of claim 64, wherein the call interruption is a network failure.