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Reliable transfer method of short message in the ad hoc network

A message and reliable technology, applied in the field of network communication, can solve problems such as the C++ language does not have an integrated event mechanism, and achieve the effects of saving network overhead, improving execution efficiency, and reducing the number of messages

Inactive Publication Date: 2007-08-15
INST OF SOFTWARE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, the C++ language does not have an integrated event mechanism

Method used

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  • Reliable transfer method of short message in the ad hoc network
  • Reliable transfer method of short message in the ad hoc network
  • Reliable transfer method of short message in the ad hoc network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] - initial data transfer mechanism

[0026] The initial data transmission mechanism saves network overhead and improves the real-time performance of message transmission by avoiding the three-way handshake process. The details are as follows:

[0027] 1. The reason for the three-way handshake in the original protocol

[0028] Investigate the reason why TCP performs a three-way handshake. If the three-way handshake is not performed, the receiver may establish a wrong connection due to the delayed arrival of repeated SYN messages, and then submit wrong and repeated data to the upper layer. Note that if the connection is not closed when the delayed and repeated message arrives, the receiving end can filter seq-no through last-ack. Therefore, an erroneous connection will only be established when the connection has already been closed by the time the deferred, duplicate message arrives at the receiving end.

[0029] Repeated SYN messages are caused by message retransmission...

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PUM

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Abstract

The provided method for reliable transmitting data in Ad Hoc network comprises: with syn, data-ack and fin message, building connection between the transmitting and receiving sides to make the receiving side obtain data without waiting for three time handshake; communicating between two sides by data-ack means to send message; once transmitting the last package, sending close-connection message to make the receiving side start the close procedure. This invention reduces message quantity and time delay, and improves system executive efficiency.

Description

technical field [0001] The invention belongs to the technical field of network communication, in particular to a method for reliably transmitting data in an ad hoc network. Background technique [0002] The Ad Hoc network is not dependent on the network infrastructure, and the nodes cooperate with each other to route through wireless communication, and a multi-hop wireless communication network is temporarily formed. Due to the high survivability and flexibility of the Ad Hoc network, it is widely used in military, industrial, commercial, medical, family, office environments and other fields. Typical applications include military communication, emergency search and rescue, mobile conference, wireless home networks, sensor networks, etc. [0003] As one of the key technical problems that must be solved in the Ad Hoc network, the main tasks of the transport layer protocol include reliable transmission and congestion control. In the traditional network, TCP undertakes 95% of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04L12/24
Inventor 王宇亮章洋郑昌文何晓新
Owner INST OF SOFTWARE - CHINESE ACAD OF SCI
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