Packet loss processing method in automatic repeat request (ARQ) feedback communication systems

A feedback communication and packet loss technology, applied in the field of packet loss processing, can solve problems such as packet error rate

Active Publication Date: 2012-09-12
北京中科晶上科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, when the packet is discarded, the receiving end cannot receive the packet, which will definitely cause a packet error rate

Method used

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  • Packet loss processing method in automatic repeat request (ARQ) feedback communication systems
  • Packet loss processing method in automatic repeat request (ARQ) feedback communication systems
  • Packet loss processing method in automatic repeat request (ARQ) feedback communication systems

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Embodiment Construction

[0056] The present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0057] The method for packet loss processing in the ARQ feedback communication system of the present invention is to read the state information of each data packet in the queue when the queue reaches the threshold and new data arrives, and obtain the QoS (Quality of Service, quality of service) state of each data packet , and determine the data packets to be discarded according to the QoS state of each data packet. The threshold in this method not only includes the situation that there is a set value, but also includes the situation that the queue is full.

[0058] Wherein, the QoS state includes the ARQ state indicating whether there is a data packet that has been sent but has not received ACK / NAK feedback, the number of transmission times of the data packet, the packet error rate of the data packet and / or the transmission delay of the data...

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Abstract

The invention discloses a packet loss processing method in ARQ feedback communication systems which is designed to solve the problem that the prior art cannot meet the Quality of Service (QoS) of systems. The packet loss processing method in ARQ feedback communication systems includes that when queues achieve threshold values and new data arrive, state information of all data packets in the queues is read, the QoS state of each of the data packets is obtained, and lost data packets are confirmed according to the QoS state of each of the data packets. The QoS state comprises ARQ states, data packet transmission times, data packet error rates and /or data packet transmission delay of data packets, and the ARQ states represent whether data packets which are sent but receive no acknowledgment character or negative acknowledge (ACK/MAK) feedbacks exist. The packet loss processing method in ARQ feedback communication systems has the advantages that packet error rates are low, packet error rates of systems are effectively reduced, the data packet transmission delay can be reduced, and thereby the QoS of the systems can be well satisfied.

Description

technical field [0001] The invention relates to a method for packet loss processing in an ARQ feedback communication system. Background technique [0002] For a system that implements the ARQ (Automatic Repeat-reQuest) protocol, after the sending end of the system sends the data packet to the receiving end, after a certain period of delay, it will receive ACK / NAK feedback from the receiving end. When the sending end receives ACK (Acknowledgment Confirmation) feedback, it considers that the data packet is received correctly, and the sending end discards the corresponding data packet in the queue. If a NAK (Negative Acknowledgment) feedback is received, it indicates that the receiving end has received an error, and if the maximum number of transmissions has not been reached, the scheduled transmission will continue. If the maximum number of transmissions is reached, the data packet is discarded, and the data packet is transmitted incorrectly. [0003] The current packet disc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/16
Inventor 石晶林周一青彭吉生田霖陈海华
Owner 北京中科晶上科技股份有限公司
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