METHOD OF UPDATING REPEATEDLY-TRANSMITTED INFORMATION IN A WIRELESS COMMUNICATION SYSTEM

• US 20100174809A1
• Filed: 06/17/2008
• Published: 07/08/2010
• Est. Priority Date: 06/18/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Young Dae, Chun, Sung Duck, Park, Sung Jun, Yi, Seung June
• Granted Patent: US 9,100,896 B2
• Time in Patent Office: Days
• US Class Current: 709/221
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method of updating repeatedly-transmitted information from a network to a user equipment in a wireless communication system is disclosed. The network transmits an indicator to the user equipment, the indicator indicating that repeatedly-transmitted information has been updated, and transmits the updated repeatedly-transmitted information to the user equipment in accordance with the indicator. The user equipment receives the updated repeatedly-transmitted information only if it receives an indicator from the network, the indicator indicating that the repeatedly-transmitted information has been updated.

Claims

1. A method of updating repeatedly-transmitted information from a network to a user equipment in a wireless communication system, the method comprising:

transmitting control information to a user equipment, the control information including a first indicator indicating that repeatedly-transmitted information has been updated; and

transmitting the updated repeatedly-transmitted information to the user equipment in accordance with the control information.

2. The method of claim 1, wherein the repeatedly-transmitted information is system information.

3. The method of claim 1, wherein the repeatedly-transmitted information is MCCH information for a specific MBMS.

4. The method of claim 2, wherein the system information includes at least one information block.

5. The method of claim 4, wherein, if a specific information block of the at least one information block is updated, the control information further includes a second indicator indicating that the specific information block has been updated.

6. The method of claim 1, wherein the control information is transmitted through L1/L2 control channel.

7. The method of claim 2, wherein the system information is transmitted through BCCH which is a logical channel.

8. The method of claim 7, wherein the first indicator is a BCCH update RNTI (Radio Network Temporary Identifier).

9. The method of claim 1, wherein the first indicator is an identifier among a plurality of identifiers, the identifier being different from another identifier for previous repeatedly-transmitted information.

10. The method of claim 9, wherein the control information further includes a repeatedly-transmitted information identifier identifying the repeatedly-transmitted information.

11. The method of claim 4, wherein the control information further includes an identifier of the at least one information block included in the system information.

12. The method of claim 11, wherein the first indicator is one of a plurality of identifiers, the identifier being different from another identifier for previous repeatedly-transmitted information.

13. The method of claim 2, wherein the control information further includes information associated with the time when the system information is transmitted.

14. The method of claim 1, wherein the control information further includes information associated a time-frequency region through which the system information is transmitted.

15. The method of claim 3, wherein the control information further includes an MBMS identifier for identifying the specific MBMS.

16. The method of claim 3, wherein the control information further includes a session identifier.

17. The method of claim 3, wherein the control information further includes information associated with the reason why the MCCH information has been updated.

18. A method of updating repeatedly-transmitted information from a network to a user equipment in a wireless communication system, the method comprising:

receiving control information including a first indicator indicating that repeatedly-transmitted information has been updated; and

receiving the updated repeatedly-transmitted information in the user equipment in accordance with the control information.

19. The method of claim 18, wherein the repeatedly-transmitted information is system information.

20. The method of claim 18, wherein the repeatedly-transmitted information is MCCH information for a specific MBMS.

21. The method of claim 19, wherein the system information includes at least one information block.

22. The method of claim 21, wherein, if a specific information block of the at least one information block is updated, the control information further includes a second indicator indicating that the specific information block has been updated.

23. The method of claim 18, wherein the control information is transmitted through L1/L2 control channel.

24. The method of claim 19, wherein the system information is transmitted through BCCH which is a logical channel.

25. The method of claim 24, wherein the first indicator is a BCCH update RNTI (Radio Network Temporary Identifier).

26. The method of claim 18, wherein the first indicator is one of a plurality of identifiers, the identifier being different from an identifier for previous repeatedly-transmitted information.

27. The method of claim 26, wherein the control information further includes a repeatedly-transmitted information identifier identifying the repeatedly-transmitted information.

28. The method of claim 22, wherein the control information further includes an identifier of the at least one information block included in the system information.

29. The method of claim 28, wherein the first indicator is one of a plurality of identifiers, the identifier being different from an identifier for previous repeatedly-transmitted information.

30. The method of claim 19, wherein the control information further includes information associated with the time when the system information is transmitted.

31. The method of claim 18, wherein the control information further includes information associated with a time-frequency region through which the system information is transmitted.

32. The method of claim 20, wherein the control information further includes a MBMS identifier for identifying the specific MBMS, and the updated MCCH information is received only if the MBMS identifier is identical with an identifier of MBMS which the user equipment desires to receive.

33. The method of claim 20, wherein the control information further includes a session identifier.

34. The method of claim 20, wherein the control information further information associated with the reason why the MCCH information has been updated.