Congestion control based wireless multi-hop network multicast method

A wireless multi-hop and congestion control technology, applied in the field of wireless networks, can solve problems such as deterioration of data packet transmission performance, failure to adapt to current network conditions, and increased data packet collisions

Inactive Publication Date: 2013-07-17
HOHAI UNIV
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Problems solved by technology

However, due to the dynamic change of the network topology, the network coding that determines the coding parameters cannot be well adapted to the current network conditions, but will significantly deteriorate the packet transmission performance in the network
In addition, if the sending node lacks a control mechanism for the sending rate of encoded packets, in the case of deteriorating network performance, maintaining a constant sending rate will cause a significant increase in data packet collisions in the network, resulting in a vicious circle
Compared with the multicast mechanism without encoding operation, traditional network encoding also brings additional delay of buffering data packets, which limits its application in services that have certain requirements for real-time performance

Method used

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  • Congestion control based wireless multi-hop network multicast method
  • Congestion control based wireless multi-hop network multicast method
  • Congestion control based wireless multi-hop network multicast method

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Embodiment Construction

[0079] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0080] The present invention designs a kind of wireless multi-hop network multicasting method based on congestion control, comprises following specific steps:

[0081] Step (1): Construct the mesh network required for data distribution, the mesh network includes sending nodes, receiving nodes, intermediate nodes and core nodes, and perform functional maintenance on the constructed mesh network;

[0082] Step (2): In the mesh network constructed in step (1), the sending node periodically sends network status detection packets to obtain various status information of the mesh network, evaluates the acquired status information, and evaluates The result is converted to the form of the parameter;

[0083] Step (3): The sending node adaptively selects the coding parameters of network coding according to the received evaluation results, and dynamically adjusts the coding par...

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Abstract

The invention discloses a congestion control based wireless multi-hop network multicast method. The method comprises the steps of constructing and maintaining a mesh network, obtaining and updating a network state, coordinating a core node and a transmitting terminal, processing an intermediate node and a receiving terminal and the like. According to the congestion control based wireless multi-hop network multicast method, transmitting parameters can be selected in a self-adaptation mode, the transmitting speed can be coordinated in the self-adaptation mode, data packet collisions caused by multicast in a wireless environment can be reduced as much as possible, and the reliability and the handling capacity of the whole network can be improved.

Description

technical field [0001] The invention relates to a wireless multi-hop network multicast method based on congestion control, and belongs to the technical field of wireless networks. Background technique [0002] Wireless multi-hop network is a new type of network structure that has emerged in recent years. The nodes in this network are responsible for the organization and maintenance of the network and the routing of data packets in the network in addition to the function of sending and receiving data packets. Typical wireless multi-hop networks include wireless sensor networks, wireless ad hoc networks, and so on. Due to the inherent characteristics of multi-hop and wireless channels, the topology of nodes in wireless multi-hop networks is always changing dynamically, especially in mobile scenarios (such as mobile ad hoc networks). How to implement multicast distribution of data packets in wireless multi-hop networks has become a research hotspot in recent years. [0003] G...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/04H04W4/06H04L1/16
Inventor 谭国平彭新华倪新洋谭林风刘修泉
Owner HOHAI UNIV
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