METHOD OF PERFORMING POLLING PROCEDURE IN A WIRELESS COMMUNICATION SYSTEM

• US 20090103512A1
• Filed: 09/17/2008
• Published: 04/23/2009
• Est. Priority Date: 09/18/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Young Dae, Park, Sung Jun, Yi, Seung June, Chun, Sung Duck
• Granted Patent: US 8,411,583 B2
• Time in Patent Office: Days
• US Class Current: 370/346
• CPC Class Codes: H04L 1/1685 the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal
• CPC Class Codes: H04L 1/1874 Buffer management
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 28/0278 using buffer status reports dynamic wireless traffic scheduling definition H04W72/12
• CPC Class Codes: H04W 74/06 using polling

Abstract

A method of generating a data block for performing a polling procedure in a wireless communication system, a method of transmitting data and a method of performing a polling procedure are disclosed. A protocol layer performs the polling procedure for requesting a receiving side to transmit status report if there are no data to be transmitted to the receiving side in both a transmission buffer and a retransmission buffer. When determining whether there are no data to be transmitted to the receiving side in the retransmission buffer, it is preferable that a data block for which retransmission request information is not received from the receiving side is excluded.

Claims

1. A method of generating data blocks in a protocol layer performing a data retransmission function in a wireless communication system, the method comprising:

receiving a first data block from an upper layer; and

generating a second data block which includes a polling field set in accordance with statuses of a transmission buffer and a retransmission buffer and at least part of the first data block,

wherein, in case that there are no data to be transmitted to a receiving side in the transmission buffer and the retransmission buffer, the polling field includes a value instructing the receiving side to transmit status report.

2. The method of claim 1, wherein a data block waiting for an acknowledgement from the receiving side is excluded when determining whether there are data to be transmitted to the receiving side in the retransmission buffer.

3. The method of claim 1, wherein the case where there are no data to be transmitted to the receiving side in the retransmission buffer includes a case where all data blocks for which retransmission request information has been received from the receiving side are retransmitted.

4. The method of claim 1, wherein the protocol layer is a radio link control (RLC) layer.

5. A method of transmitting data in a protocol layer performing a data retransmission function in a wireless communication system, the method comprising:

receiving status report from a receiving side, the status report requesting retransmission with respect to a data block stored in a retransmission buffer;

setting a polling field included in the data block in accordance with statuses of a transmission buffer and a retransmission buffer of the protocol layer; and

transmitting the data block to the receiving side,

wherein, in case that there are no data to be transmitted to a receiving side in the transmission buffer and the retransmission buffer after transmission of the data block, the polling field includes a value instructing the receiving side to transmit status report.

6. The method of claim 5, wherein a data block waiting for an acknowledgement from the receiving side is excluded when determining whether there are data to be transmitted to the receiving side in the retransmission buffer.

7. A method of performing a polling procedure in a protocol layer performing a data retransmission function in a wireless communication system, the method comprising:

checking statuses of a transmission buffer and a retransmission buffer of the protocol layer; and

performing a polling procedure for requesting a receiving side to transmit status report if there are no data to be transmitted to the receiving side in both the transmission buffer and the retransmission buffer.

8. The method of claim 7, wherein performing the polling procedure comprises:

setting a polling field of a data block to be transmitted to the receiving field to a specific value; and

transmitting the data block to the receiving side.

9. The method of claim 8, wherein a data block waiting for an acknowledgement from the receiving side is excluded when determining whether there are data to be transmitted to the receiving side in the retransmission buffer.

10. A method of performing a polling procedure in a protocol layer performing a data retransmission function in a wireless communication system, the method comprising:

generating a data block including a header part and a data field part;

checking whether sum of a size of data included in at least one data block transmitted to a receiving side and a size of data included in the generated data block exceeds a predetermined threshold; and

performing a polling procedure if the sum of the sizes of the data exceeds the threshold value.

11. The method of claim 10, wherein the size of data included in data field parts of the at least one data block and the generated data block is only considered when the sum of the sizes of the data is calculated.

12. The method of claim 10, wherein the polling procedure is performed by setting a polling field included in a header of the generated data block to a specific value.