Method of performing polling procedure in a wireless communication system

• US 9,084,125 B2
• Filed: 01/28/2013
• Issued: 07/14/2015
• Est. Priority Date: 09/18/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Chun, Sung Duck, Lee, Young Dae, Park, Sung Jun, Yi, Seung June
• Primary Examiner(s): Zhu, Alvin
• Application Number:
  US13/752,186
• Publication Number:
  US 20130136044A1
• Time in Patent Office: 897 Days
• US Class Current: 1/1
• 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 for performing a polling procedure in a protocol layer of a transmitting side in a wireless communication system, the method comprising:

generating a first data block which contains a header and a data field, the header comprising a polling field;

setting a polling field of the first data block to be transmitted to a receiver, wherein a value of the polling field is set according to a status of a transmission buffer and a retransmission buffer of the transmitting side, and wherein the polling field is set further in consideration of a counter value;

increasing the counter value per one byte of data included in the data field of the first data block;

wherein the polling field of the first data block is set with a value for triggering a polling either if both the transmission buffer and the retransmission buffer of the transmitting side are empty of data or if the counter value exceeds a predetermined threshold, and wherein a second data block present in the retransmission buffer, and awaiting acknowledgement from a receiving side, is excluded in determining whether the retransmission buffer is empty of data for transmitting to the receiving side; and

transmitting the first data block to the receiving side.

2. The method of claim 1, wherein the value for triggering the polling is “

1”

.

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

4. The method of claim 2, wherein the first data block is an RLC protocol data unit (PDU).

5. An apparatus for performing a polling procedure in a wireless communication system, the apparatus configured to:

generate a first data block which contains a header and a data field, the header comprising a polling field;

set a polling field of the first data block to be transmitted to a receiver, wherein a value of the polling field is set according to a status of a transmission buffer and a retransmission buffer of the transmitting side, and wherein the polling field is set further in consideration of a counter value;

increase the counter value per one byte of data included in the data field of the first data block;

wherein the polling field of the first data block is set with a value for triggering a polling either if both the transmission buffer and the retransmission buffer of the transmitting side are empty of data or if the counter value exceeds a predetermined threshold, and wherein a second data block present in the retransmission buffer, and awaiting acknowledgement from a receiving side, is excluded in determining whether the retransmission buffer is empty of data for transmitting to the receiving side; and

transmit the first data block to the receiving side.

6. The apparatus of claim 5, wherein the value for triggering the polling is “

1”

.

7. The apparatus of claim 5, wherein the protocol layer is a radio link control (RLC) layer.

8. The apparatus of claim 7, wherein the first data block is an RLC protocol data unit (PDU).