Data transmission method and data re-transmission method

• US 8,369,865 B2
• Filed: 03/07/2012
• Issued: 02/05/2013
• Est. Priority Date: 01/05/2006
• Status: Active Grant

• Current Assignee: S.I.Sv.El. Societa' Italiana Per Lo Sviluppo Dell'Elettronica S.P.A. (Fineur International S.A.)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Sung Jun, Chun, Sung Duck, Lee, Young Dae
• Primary Examiner(s): MIZRAHI, DIANE D
• Application Number:
  US13/414,470
• Publication Number:
  US 20120163304A1
• Time in Patent Office: 335 Days
• Field of Search: 455/452.2, 455/67.11, 455/455, 455/464, 370/328, 370/241, 370/282, 370/321, 370/352, 370/394, 370/473, 717/749
• US Class Current: 455/452.2
• CPC Class Codes: H04L 1/1635 Cumulative acknowledgement, i.e. the acknowledgement message applying to all previous messages
• 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 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1838 for semi-reliable protocols, e.g. for less sensitive applications such as streaming video buffer level management for video bitstream receiver H04N21/44004
• CPC Class Codes: H04L 1/1851 using multiple timers
• CPC Class Codes: H04L 1/1877 for semi-reliable protocols, e.g. for less sensitive applications like streaming video buffer level management for video bitstream control arrangements H04N21/44004
• CPC Class Codes: H04L 1/1883 using multiple timers
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04L 69/03 Protocol definition or specification protocol conformance testing H04L1/244
• CPC Class Codes: H04L 69/40 for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection management of faults, events, alarms or notifications in data switching networks H04L41/06
• CPC Class Codes: H04W 80/02 Data link layer protocols

Abstract

A method which can reduce loss in data transmission is provided. A data block is prepared in a high-level layer and the data block is transmitted in a low-level layer. Status report information associated with reception or non-reception of the data block is received through the low-level layer. When a receiver fails to receive data transmitted from a transmitter, the transmitter can rapidly recognize the reception failure and can retransmit the data.

Claims

1. A method of transmitting a status report in a wireless communication system, the method comprising:

receiving, by a receiver, at least one Radio Link Control (RLC) Protocol Data Unit (PDU) from a transmitter;

detecting, by the receiver, whether at least one RLC PDU to be received from the transmitter is missed; and

transmitting, by the receiver, the status report to the transmitter,

wherein the status report includes a positive acknowledgement indicating a highest RLC PDU having a highest sequence number (SN) among at least one successfully received RLC PDU.

2. The method of claim 1, wherein the positive acknowledgement includes an SN following the highest SN of the highest RLC PDU.

3. The method of claim 1, wherein the status report further includes a negative acknowledgement indicating at least one missed RLC PDU.

4. The method of claim 3, wherein the negative acknowledgement includes an SN of the at least one missed RLC PDU.

5. The method of claim 1, further comprising:

starting a timer when at least one RLC PDU is detected as missed, wherein the status report is triggered when the timer expires.

6. A receiver for transmitting a status report in a wireless communication system, the receiver comprising:

a processor configured to;

receive at least one Radio Link Control (RLC) Protocol Data Unit (PDU) from a transmitter;

detect whether at least one RLC PDU to be received from the transmitter is missed; and

transmit the status report to the transmitter,

wherein the status report includes a positive acknowledgement indicating a highest RLC PDU having a highest sequence number (SN) among at least one successfully received RLC PDU.

7. The receiver of claim 6, wherein the positive acknowledgement includes an SN following the highest SN of the highest RLC PDU.

8. The receiver of claim 6, wherein the status report further includes a negative acknowledgement indicating at least one missed RLC PDU.

9. The receiver of claim 8, wherein the negative acknowledgement includes an SN of the at least one missed RLC PDU.

10. The receiver of claim 6, wherein the processor is further configured to start a timer when at least one RLC PDU is detected as missed, wherein the status report is triggered when the timer expires.