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Method of carrying out field name system in moble self-organizing network

A technology of domain name system and domain name, which is applied in domain name system (DNS) field, and can solve the problems of broadcast storm network utilization rate decrease and frequent broadcasting, etc.

Inactive Publication Date: 2005-01-12
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This simple domain name resolution mechanism of broadcast request / unicast response, because each domain name resolution of each node needs to start a broadcast, makes the network broadcast frequently, which easily leads to broadcast storms and a sharp drop in network utilization

Method used

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  • Method of carrying out field name system in moble self-organizing network
  • Method of carrying out field name system in moble self-organizing network

Examples

Experimental program
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Embodiment Construction

[0089] figure 1 The flow chart of domain name resolution in the figure, the processing steps of each event in the figure are as follows:

[0090] Step S1.1: After the node receives the domain name resolution request from the application, it looks up the requested domain name D_name in its own domain name cache; and initializes the domain name resolution attempt counter Counter, whose initial value is 0.

[0091] Step S1.2: If there is a record R with the domain name D_name in the domain name cache, send DN_REQ to the IP address recorded in R to confirm the correctness of the mapping between D_name and IP_addr; if the domain name is not found in the domain name cache For the record of D_name, broadcast a DN_REQ to the whole network to query the IP address of D_name.

[0092] Step S1.3: The address of the IP header of the DN_REQ message is the IP recorded in R.

[0093] Step S1.4: The address of the IP header of the DN_REQ message is a broadcast address, and in IPv6 it is a pr...

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Abstract

The invention belongs to technical area of mobile self-organization network MANET. Steps are as following: MANET node declares own information of domain name, receiving nodes store the information of domain name in buffer DN_ INFO_CACHE; node of parsing D_NAME searches recorder R, whose domain name item is D_NAME, in DN_ INFO_CACHE; if yes, the said node unicasts a request message of domain name DN_REQ to IP address in redcorder R; if no, the said node broadcasts DN_REQ; nodes received DN_REP determines whether oneself is the node requested; if yes, sending response message DN_REP to requester; otherwise forwarding DN_REQ; the node received DN_REP updates DN_INFO_CACHE, receives and processes DN_REQ, if it is wanted. The method brings information as much as possible in one cycle.

Description

technical field [0001] The invention belongs to the technical field of MANET (Mobile Ad Hoc Networks) and is a realization method of Domain Name System DNS (Domain Name System) in MANET automatic configuration technology. Background technique [0002] The mobile ad hoc network is a wireless multi-hop network without a base station. It is a point-to-point self-creating, self-organizing, and self-managing network with a highly dynamic topology and arbitrary movement of nodes. Literature [1] Ramanathan R, Redi J, "A Brief Overview of mobile Ad hocNetworks: Challenges and Directions", IEEE Communications Magazine, 50 th Anniversary Commemorative Issue [C], 2002. Traditional DNS requires a dedicated domain name server to provide domain name services for other nodes in the network, which is a centralized domain name service / analysis system. However, it is difficult to find a centralized domain name server in a MANET with dynamic topology changes and unstable wireless links, so ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28
Inventor 周继华石晶林
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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