Unlock instant, AI-driven research and patent intelligence for your innovation.

Retransmission control method and system for single data packet and last data packet

A data packet, final technology, applied in the field of mobile communication, can solve problems such as long delay

Active Publication Date: 2011-05-18
ALCATEL LUCENT SHANGHAI BELL CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] - This retransmission occurs at the ARQ level, resulting in a longer delay

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Retransmission control method and system for single data packet and last data packet
  • Retransmission control method and system for single data packet and last data packet
  • Retransmission control method and system for single data packet and last data packet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0034] figure 1 is a schematic diagram showing an ARQ / HARQ cross-layer structure for performing retransmission control according to the present invention. Such as figure 1As shown, the ARQ / HARQ cross-layer structure includes an ARQ transmitter 101 , a HARQ transmitter 103 , a HARQ receiver 105 and a HARQ receiver 107 . The HARQ transmitter 103 and the HARQ receiver 105 are located at the medium access layer, while the ARQ transmitter 101 and the ARQ receiver 107 are located at the radio link layer. The ARQ / HARQ cross-layer structure forms a retransmission control system for realizing the retransmission control of a single data packet or the last data packet of a continuous data flow, which implements the ARQ / HARQ cross-layer operation according to the present invention Retransmission control, as described below.

[0035] figure 2 is a sequence diag...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

According to the invention, a re-transmission control method for the last data packet of a separated single data packet or a continuous data stream is provided. The method includes: when a HARQ transmitter detect an acknowledgement answer ACK fed back from a HARQ receiver for the last data packet of the separated data packet or the continuous data stream, the HARQ transmitter only transmits transmission control command to HARQ receiver and starts a timer, waiting for the HARQ receiver to re-feed back an acknowledgement answer ACK or a denying answer NACK for the control command. When the HARQtransmitter detects the ACK answer fed back from the HARQ receiver for the control command within the timing of the timer, the HARQ transmitter generates local ACK and sends the local ACK to a ARQ transmitter; when the HARQ transmitter detects the NACK answer fed back from the HARQ receiver for the control command within the timing of the timer, the HARQ transmitter initiates a HARQ level re-transmission.

Description

technical field [0001] The invention relates to the field of mobile communication. Specifically, it relates to a retransmission control method for a single data packet or the last data packet of a continuous data stream, a HARQ transmitter, a transmitter device and a retransmission control system for realizing the method, which can provide a retransmission based on HARQ level The robust and practical ARQ / HARQ cross-layer operation scheme achieves very small waiting time, ensures the reliability of data transmission, and saves radio resources. Background technique [0002] 3GPP (Third Generation Partnership Project) launched the long-term evolution research project (LTE) in 2005, hoping to provide support for the growing demands of operators and users with higher data throughput and better network performance. [0003] In research on LTE, a major decision was to use ARQ (Automatic Repeat Request) and HARQ (Hybrid Automatic Repeat Request) cross-layer operation between RLC (R...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L1/16H04L12/56
CPCH04L1/188H04L1/1812H04L1/1887
Inventor 杨涛尤明礼
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD