Research On Location-based IPv6 Address Configuration Mechanism For 6LoWPAN Network

In high information age,it will become the inevitable trend of future development that a large number of low-power embedded devices access the IPv6 Internet,so 6LoWPAN has become a hot research in recent years.However,in6 LoWPAN low-power wireless network,the number of nodes is huge and the network usually takes multiple hops topology so that the traditional address configuration scheme is difficult to be used directly.The special address allocation mechanism which adapt to the 6LoWPAN environment must be studied.In some 6Lo WPAN applications,there is no significance of the monitoring data without location information in many scenarios and the location information among nodes has natural similarities and differences.Therefore,in this paper,the location information is taken into the address auto-configuration algorithm for 6Lo WPAN network is studied.The main research is as follows:(1)Construct a network architecture based on location information(LINA).In this architecture,a 6Lo WPAN network is divided into multiple grid zones according to the position information of nodes and the address configuration in different zones can be carried out at the same time so that the purpose of rapid clustering can be achieved and the delay of address configuration can be greatly decreased.In addition,the address configuration cost can be vastly reduced because the area of address requesting message is limited in a grid instead of all network.(2)Propose a random dichotomy address configuration scheme based on LINA architecture.The random dichotomy address scheme,which improves the original neighbors proxy address configuration scheme,dispatches the task of address configuration to most of the proxy nodes in each grid.In order to reduce the failure rate of address configuration in the high density of nodes,the node obtains the corresponding address space according to the number of surrounding nodes that has not been assigned IP address.Moreover,an effective address recovery mechanism is proposed.(3)Propose location-based distributed address allocation mechanism(LDAAM)based on the LINA network architecture.The LDAAM scheme which requires someprior information in the network to properly set the parameters of the address configuration is suitable for some applications where the network topology are relatively deterministic.An effective borrowing mechanism is proposed to reduce the number of isolated nodes and improve the success rate of address allocation.Routing is easy to implement because the address assigned by the LDAAM mechanism involves the relative mapping relationship of "address-location".(4)Simulate and analyze the proposed schemes by using OPNET Modeler 15.4.Experimental results show that the two address configuration schemes reduce the delay and cost.They,therefore,have a better performance.