METHOD FOR ENHANCING OF CONTROLLING RADIO RESOURCES AND TRANSMITTING STATUS REPORT IN MOBILE TELECOMMUNICATIONS SYSTEM AND RECEIVER OF MOBILE TELECOMMUNICATIONS SYSTEM

• US 20100190504A1
• Filed: 06/18/2008
• Published: 07/29/2010
• Est. Priority Date: 06/18/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yi, Seung-June, Park, Sung-Jun, Lee, Young-Dae
• Granted Patent: US 8,681,608 B2
• Time in Patent Office: Days
• US Class Current: 455/450
• CPC Class Codes: H04L 1/1628 List acknowledgements, i.e. the acknowledgement message consisting of a list of identifiers, e.g. of sequence numbers H04L1/1614 takes precedence
• CPC Class Codes: H04L 1/1835 Buffer management
• CPC Class Codes: H04L 1/1841 Resequencing
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• 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: H04W 72/00 Local resource management

Abstract

Disclosed is a method for enhancing of controlling radio resource and transmitting a Status Report in a mobile telecommunications system, and a receiver of mobile telecommunications system. When any PDUs that have not been received (‘missing PDUs’) occur, a receiving RLC entity does not immediately request re-transmission about the ‘missing PDUs’. Rather, only when missing PDUs more than a predetermined number occur, the receiving RLC entity requests the re-transmission. Accordingly, an amount of radio resources required to transmit a Status Report can be reduced.

Claims

1. A method for transmitting a status report by a receiving side in a mobile telecommunications system, comprising:

(A) receiving a threshold value related to a status report from the sending side, wherein the threshold value is decided by a sending side;

(B) receiving data transmitted from the sending side and storing the data in a reception buffer; and

(C) transmitting the status report to the sending side by checking a total amount of the data stored in the reception buffer, and the threshold value.

2. The method of claim 1, wherein the step of (C) includes:

calculating a ratio of the reception buffer usage by stored data; and

comparing the calculated ratio with the threshold value;

3. The method of claim 2, wherein the status report is transmitted to the sending side when the calculated ratio is larger than the threshold value.

4. The method of claim 1, wherein when the total amount of data stored in the reception buffer is larger than the threshold value, data that has not been received is identified by using sequence number (SN) of the data stored in the reception buffer, and the status report including information about the data that has not been received is transmitted.

5. The method of claim 1, wherein the threshold value is a predetermined value indicating a total byte of data stored in the reception buffer, or

a ratio of a total byte of data stored in the reception buffer to a total byte of the reception buffer, or

a ratio of the number of PDUs corresponding to a total amount of data stored in the reception buffer, to a size of a reception window.

6. The method of claim 1, wherein the sending side is a network, and the receiving side is an user equipment (UE),

wherein the step of (A) is performed by a Radio Resource Control (RRC) entity of the UE, and

wherein the steps of (B) and (C) are performed by a Radio Link Control (RLC) entity of the UE.

7. A method for transmitting a status report in a mobile telecommunications system, comprising:

storing Radio Link Control Protocol Data Units (RLC PDUs) out of sequence received from a sending side in a reception buffer;

identifying RLC PDUs that have not been received when a predetermined ratio of RLC PDUs are stored in the reception buffer; and

transmitting a status report that informs the sending side of the RLC PDUs that have not been received.

8. The method of claim 7, further comprising:

when the RLC PDUs that have not been received are received from the sending side having received the status report, transferring, to an upper layer, the received RLC PDUs and the RLC PDUs that are previously received and stored in the reception buffer.

9. The method of claim 8, wherein the received RLC PDUs and the RLC PDUs that are previously received and stored in the reception buffer are in sequence.

10. The method of claim 7, wherein the predetermined ratio is a ratio of the reception buffer usage by stored data, and the predetermined ratio is decided by the sending side and is transmitted to the receiving side.

11. The method of claim 10, wherein the sending side is a base station, and the receiving side is an user equipment (UE).

12. A method for transmitting a status report in a mobile telecommunications system, comprising:

receiving, from a sending side, a threshold value associated with status report transmission;

counting the number of missing Protocol Data Units (PDUs) in a receiving window among PDUs transmitted from the sending side; and

transmitting a status report to the sending side when the number of the counted missing PDUs reaches the threshold value.

13. The method of claim 12, wherein the threshold value is decided by the sending side, and indicates an allowable number of missing PDUs.

14. A method for transmitting a status report in a mobile telecommunications system, comprising:

receiving, from a sending side, a threshold value associated with status report transmission;

receiving PDUs transmitted from the sending side, and storing the PDUs in a reception buffer;

counting the number of PDUs stored in the reception buffer; and

transmitting a status report to the sending side when the number of the counted PDUs reaches the threshold value.

15. The method of claim 14, wherein the threshold value is decided by the sending side, and indicates an allowable number of PDUs stored in the reception buffer.

16. The method of claim 14, wherein the status report includes information about missing PDUs.