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Multiple-session initiation protocol (SIP) server layout method in wireless Mesh network

A layout method and server technology, which are used in wireless network protocols, wireless communications, network planning, etc.

Inactive Publication Date: 2011-04-20
WUHAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0029] For the above-mentioned technical problems, the purpose of the present invention is to provide a multi-SIP server layout method in a wireless Mesh network, to solve the negative effects of the instability of the wireless link on the SIP-based voice call service in the wireless Mesh network. influences

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  • Multiple-session initiation protocol (SIP) server layout method in wireless Mesh network
  • Multiple-session initiation protocol (SIP) server layout method in wireless Mesh network
  • Multiple-session initiation protocol (SIP) server layout method in wireless Mesh network

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Embodiment Construction

[0081] Predecessors have done a lot of research on the system architecture, channel quality, network capacity, routing, multicast, and signaling calls of wireless Mesh networks, but there are still many problems in this research field.

[0082] In the theoretical research and engineering practice of wireless Mesh networks, a problem that must be faced is the stability of wireless links. The wireless communication process is easily affected by factors such as signal fading, channel interference, noise intensity, communication distance, weather conditions, and terrain environment, and unpredictable wireless link intermittent phenomena will occur. Frequent network topology changes, and even the situation where the network is divided into multiple independent subnets, seriously affect the stability and reliability of the wireless communication system. In a temporary emergency communication environment, this effect may be more serious. Therefore, with the increasing demand for wir...

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Abstract

The invention relates to the technical field of combining wireless network technology and internet protocol (IP) speech technology, in particular to a multiple-session initiation protocol (SIP) server layout method in a wireless Mesh network. The method comprises the following steps of: measuring the communication quality of a wireless link in the wireless Mesh network; laying out SIP servers; and selecting routes so that a router accesses the SIP servers. The method has the following main advantages that: 1, the SIP servers are arranged in each partition region for providing calling access service as possible when the network is partitioned so as to ensure that speech communication functions in each region can be normally used; and 2, a group of reliable paths leading to the SIP servers which are laid out at different positions are selected for SIP agents on all the router nodes, so that the influence of single-point fault of the wireless link and the servers can be eliminated, and access loads are distributed on the selected server nodes. The method solves the problem that the instability of the wireless link has negative effect on an SIP-based speech calling service in the wireless Mesh network.

Description

technical field [0001] The present invention relates to the technical field of the combination of wireless network technology and Voice over IP (VoIP) technology, in particular to a multi-SIP server layout method in a wireless Mesh network, and in particular how to implement a multi-SIP server in a wireless mesh network (Wireless Mesh Network, WMN) Provide highly reliable voice call access services based on Session Initiation Protocol (SIP), design how to select appropriate nodes in the network to deploy SIP servers, and how to configure SIP agents on each wireless router in the network Select the path to the server and so on. Background technique [0002] Wireless Mesh networks combine the advantages of WLANs and mobile ad hoc networks. The combination of WMN and SIP can provide a certain unit or department with fast, flexible and cost-effective voice communication services. Especially in the communication application of special environment and emergency rescue, it has a ...

Claims

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Application Information

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IPC IPC(8): H04W16/10H04W24/08H04W40/30H04W80/10
Inventor 郭成城李文翔吴静张洋
Owner WUHAN UNIV
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