Method of performing polling procedure in a wireless communication system

• US 9,565,699 B2
• Filed: 04/27/2015
• Issued: 02/07/2017
• 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:
  US14/697,495
• Publication Number:
  US 20150237653A1
• Time in Patent Office: 652 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 wireless communication system, the method comprising:

setting, by a radio link control (RLC) layer of a sender, a polling field of a 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 status of a retransmission buffer of the sender; and

transmitting the data block to the receiver,

wherein the value of the polling field of the data block is set to a value for triggering the receiver to transmit a status report to the sender in case that, after transmitting the data block, the transmission buffer becomes empty and that there is no data block to be retransmitted to the receiver in the retransmission buffer,

wherein a data block present in the retransmission buffer, and awaiting acknowledgement from the receiver, is excluded when determining whether there is no data block to be retransmitted to the receiver in the retransmission buffer.

2. The method of claim 1, further comprising:

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

setting the polling field of the data block with a value for triggering a polling when the counter value exceeds a predetermined threshold.

3. The method of claim 1, wherein the trigger value is “

1”

.

4. The method of claim 1, wherein the status report requests a retransmission of a data block stored in the retransmission buffer.

5. A sender for performing a polling procedure in a wireless communication system, the sender comprising:

a transmission buffer;

a retransmission buffer; and

a radio link control (RLC) layer setting a polling field of a data block to be transmitted to a receiver, wherein a value of the polling field is set according to a status of the transmission buffer and a status of the retransmission buffer,

wherein the value of the polling field of the data block is set to a value for triggering the receiver to transmit a status report to the sender in case that, after transmitting the data block, the transmission buffer becomes empty and that there is no data block to be retransmitted to the receiver in the retransmission buffer, and

a transmitter configured to transmit the data block to the receiver,

wherein a data block present in the retransmission buffer, and awaiting acknowledgement from the receiver, is excluded when determining whether there is no data block to be retransmitted to the receiver in the retransmission buffer.

6. The sender of claim 5, wherein the sender increases a counter value per one byte of data included in a data field of the data block, and the RLC layer sets the polling field of the data block with a value for triggering a polling when the counter value exceeds a predetermined threshold.

7. The sender of claim 5, wherein the trigger value is “

1”

.

8. The sender of claim 5, wherein the status report requests a retransmission of a data block stored in the retransmission buffer.