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Method for improving wireless self-organizing network performance using TCP Veno

A technology of wireless self-organization and network performance, applied in data exchange network, error prevention/detection using return channel, data exchange through path configuration, etc., can solve problems such as TCP performance degradation, and achieve the effect of improving TCP performance

Inactive Publication Date: 2008-01-30
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, there is no good solution to the problem of TCP performance degradation caused by high bit error rates in multi-hop network environments such as wireless ad hoc networks.

Method used

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  • Method for improving wireless self-organizing network performance using TCP Veno
  • Method for improving wireless self-organizing network performance using TCP Veno
  • Method for improving wireless self-organizing network performance using TCP Veno

Examples

Experimental program
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Embodiment Construction

[0013] In the wireless ad hoc network, if the network environment is poor and the noise is large, the parameters can be adjusted in the MAC layer first, and the bit error rate in the wireless network environment can be appropriately reduced; for a better network environment, you can Directly at the TCP layer, the TCP Veno technology is applied to modify the number of congestion windows and the slow start threshold at the sending end to solve the random packet loss problem at the transport layer.

[0014] As shown in Figure 1, it is the processing flow block diagram of the method of the present invention, for the poor environment of network environment, change parameter request to send / clear and send RST / CST (ShortRetryLimit_) and parameter MAC layer in .802.11MAC layer to transmit For the data frame (LongRetryLimit_), the maximum number of retransmissions M is determined according to the above parameters, so as to appropriately reduce the bit error rate in the wireless network ...

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Abstract

The invention discloses a method used for enhancing wireless self-organizing network performance by making use of TCP Veno technology and the method relates to wireless communication technology and makes use of the TCP Veno technology to adopt different congestion control algorithms for different network connection statuses on different stages of data transmission. Due to the bad network environment, the method can also properly reduce bit error rate and improve TCP performance at the time of random packet loss by making use of setting the largest retransmission number of every node MAC layer in the wireless self-organizing network, thereby the TCP performance in the wireless self-organizing network is fully enhanced. The method is suitable for a static self-organizing network SANET and a dynamic self-organizing network MANET.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a wireless ad hoc network. Background technique [0002] A wireless ad hoc network is a network with a highly dynamic topology and nodes that move arbitrarily. In the prior art, the wireless ad hoc network usually adopts the traditional TCP / IP protocol (i.e. TCP Reno technology) to transmit and exchange data, document (Holland G, Vaidya N.Analysis of TCPperformance over mobile ad hoc networks.WirelessNetworks , 2002, 8(2): 275-288.) introduced the use of traditional TCP technology (i.e. TCP Reno) in the wireless ad hoc network, but due to the high bit error rate of the wireless link will lead to out-of-order data packets and The loss has a serious impact on the network using traditional TCP technology and reduces the performance of TCP. At present, the research on TCP performance in wireless network environment mainly focuses on the single-hop wireless network en...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L29/06H04L1/18H04L12/28H04L45/02
Inventor 谢显中唐述赵锐
Owner CHONGQING UNIV OF POSTS & TELECOMM
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