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Method for routing foundation

A method of establishing a method and a routing technology, which is applied in the direction of data exchange through path configuration, radio relay system, active electrical relay system, etc., can solve problems such as limited energy, insufficient energy of intermediate nodes, and inability to forward data, etc., to avoid Effects of route reconstruction and efficiency improvement

Inactive Publication Date: 2007-12-05
NTT DOCOMO INC
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  • Summary
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AI Technical Summary

Problems solved by technology

In practical applications, the energy of nodes is limited due to the way of battery power supply. In this way, in the process of data transmission after the route is established, there will be situations where data cannot be forwarded due to insufficient energy of intermediate nodes. This can only Restart the route establishment process to find other routes. It can be seen that the efficiency of the existing route establishment method is low

Method used

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Embodiment Construction

[0073] In order to make the purpose and technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0074] The invention is a method for establishing a route in a wireless network with a node having a routing function, and its basic idea is that a node device only participates in the establishment of a route when its own energy is sufficient to meet the demand of traffic.

[0075] Fig. 3 shows an exemplary schematic diagram of a method for establishing a route in the present invention. Referring to Figure 3, the method includes:

[0076] In step 301, it is judged whether there is a route to the destination node corresponding to the data packet transmitted in the source node, and if so, then the route is determined according to the energy of the intermediate node of the route and the traffic volume corresponding to the data packet If it is a valid path, send the...

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Abstract

The invention discloses a route building method. It includes the following steps: judging whether source node has destination node route or not; if it is, the route is effective which can be confirmed by middle node energy and the data packet traffic capacity and sending data packet by it; if it is not, broadcasting the RPEQ carried with traffic capacity; judging whether the received RPEQ node is the destination node or not; if it is, returning the route from the source node to destination node and the PREP to the source node and transmitting the data packet according to the route; if it is not, confirming the middle node is effective and searching the effective route. Thus the invention can increase route building efficiency.

Description

technical field [0001] The invention relates to routing technology, in particular to a routing establishment method in a wireless network with nodes having routing functions. Background technique [0002] Based on people's strong desire to get rid of the shackles of wired networks and communicate freely anytime and anywhere, wireless network communications have developed rapidly in recent years. In order to carry out wireless communication in places without fixed wired infrastructure, wireless ad hoc network (Ad hoc) technology emerges as the times require. In this network, a group of mobile nodes with wireless transceivers form a base station, multi-hop, temporary autonomous network, and each mobile node has a router function, which can perform sending and receiving during data communication. And the function of forwarding data packets. [0003] Since the Ad hoc network does not need fixed wired infrastructure support, compared with the traditional communication network, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L12/56H04L12/70H04B7/15H04L12/721H04W16/26H04W40/02H04W40/10H04W40/34H04W84/18
CPCY02D30/70
Inventor 谢芳杜蕾白勇陈岚
Owner NTT DOCOMO INC
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