METHOD FOR SUPPORTING QUALITY OF MULTIMEDIA BROADCAST MULTICAST SERVICE (MBMS) IN MOBILE COMMUNICATIONS SYSTEM AND TERMINAL THEREOF

• US 20100226263A1
• Filed: 06/21/2007
• Published: 09/09/2010
• Est. Priority Date: 06/21/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Sung-Jun, Lee, Young-Dae, Chun, Sung-Duck
• Granted Patent: US 8,638,707 B2
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0027 Scheduling of signalling, e.g. occurrence thereof
• CPC Class Codes: H04L 1/0029 Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling power control H04W52/04
• CPC Class Codes: H04L 1/0035 evaluation of received explicit signalling
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

In a wireless mobile communications system, a method of supporting quality of Multimedia Broadcast Multicast Service (MBMS) while using minimum possible radio resource(s) of a cell. A method of providing a multimedia multicast broadcast service (MBMS) in a wireless communications system that may include: transmitting a feedback configuration parameter to at least one terminal that is subscribed in a MBMS service; transmitting a MBMS service data to the at least one terminal; and receiving feedback information from the at lest one terminal that uses the feedback configuration parameter for a transmission of the feedback information.

Claims

1. A method of providing a point to multipoint service in a wireless communications system, the method comprising:

receiving a feedback configuration parameter from a base station;

receiving a point to multipoint service data; and

transmitting feedback information using the received feedback configuration parameter.

2. The method of claim 1, wherein the feedback configuration parameter is allocated per each point to multipoint service.

3. The method of claim 1, wherein the feedback configuration parameter is related to a radio resource for a transmission of feedback information.

4. The method of claim 3, wherein the feedback information is an ACK/NACK signal.

5. The method of claim 3, wherein the feedback information is a Random Access Channel (RACH) preamble.

6. The method of claim 3, wherein the feedback information is a specific Channel Quality Indicator (CQI) code value.

7. The method of claim 1, wherein the feedback information is transmitted to the network only when a certain condition is met.

8. The method of claim 4, wherein the ACK signal is transmitted to the network when the point to multipoint service data is successfully received and the NACK signal is transmitted to the network when the point to multipoint service data is not successfully received.

9. The method of claim 4, wherein only the ACK signal is transmitted to network when the point to multipoint service data is successfully received and the NACK signal is not transmitted to the even if the point to multipoint service data is not successfully received.

10. The method of claim 4, wherein only the NACK signal is transmitted to network when the point to multipoint service data is not successfully received and the ACK signal is not transmitted to the network even if the point to multipoint service data is successfully received.

11. The method of claim 7, wherein the certain condition is previously set by each terminal that is subscribed in the point to multipoint service.

12. The method of claim 1, wherein the feedback information is transmitted to the network based on whether the each receiving steps are successfully received.

13. A method of providing a point to multipoint service in a wireless communications system, the method comprising:

transmitting a feedback configuration parameter to at least one terminal that is subscribed in the point to multipoint service;

transmitting a point to multipoint service data to the at least one terminal; and

receiving feedback information from the at lest one terminal that uses the feedback configuration parameter for a transmission of the feedback information.

14. The method of claim 13, further comprising:

adjusting a radio configuration parameter according to the received feedback information.

15. The method of claim 14, further comprising:

transmitting the point to multipoint service data to the at least one terminal using the adjusted radio configuration parameter.

16. The method of claim 14, wherein the radio configuration parameter includes at least one of a code, a power, a frequency, or time that are allocated for the point to multipoint service.

17. The method of claim 13, wherein the feedback configuration parameter is allocated per each point to multipoint service.

18. The method of claim 13, wherein the feedback configuration parameter is related to a radio resource for a transmission of feedback information.

19. The method of claim 18, wherein the feedback information is an ACK/NACK signal.

20. The method of claim 18, wherein the feedback information is a RACH preamble.

21. The method of claim 18, wherein the feedback information is a specific Channel Quality Indicator (CQI) code value.

22. The method of claim 19, wherein the ACK signal is received from the at least one terminal when the point to multipoint service data is successfully received by the at least one terminal and the NACK signal is received from the at least one terminal when the point to multipoint service data is not successfully received by the at least one terminal.

23. The method of claim 19, wherein only the ACK signal is received from the at least one terminal when the point to multipoint service data is successfully received by the at least one terminal and the NACK signal is not received even if the point to multipoint service data is not successfully received by the at least one terminal.

24. The method of claim 19, wherein only the NACK signal is received from the at least one terminal when the point to multipoint service data is not successfully received by the at least one terminal and the ACK signal is not received even if the point to multipoint service data is successfully received by the at least one terminal.

25. A mobile terminal for providing a point to multipoint service in a wireless communications system, the mobile terminal comprising:

a transceiver adapted to transmit or receive a data related to the point to multipoint service;

a memory adapted to store the data transmitted or received via the transceiver or from an external source; and

a processor cooperating with the transceiver and the memory and adapted to perform the steps of,

receiving a feedback configuration parameter from a base station;

receiving a point to multipoint service data; and

transmitting feedback information using the received feedback configuration parameter.