Research And Implementation Of Interconnection And Service Discovery Technologies In The Ubiquitous Network

With the development of communication technology, communication networks are widely distributed around people, forming a ubiquitous network environment. In the perceptual extension layer of the ubiquitous network, there are various terminal nodes with different functions and network access. As the antennae of ubiquitous network to perceive the real world, they can abstract real world into concrete data information, achieving the communication between objects and objects, people and objects. However, the type and number of the terminal node are growing exponentially, the problems of the access of terminal nodes and transmission network are still demanding prompt solution. The terminal nodes need to cooperate with each other to complete tasks which are impossible to be done alone, because of their strong mobility and limited hardware and software resources. Terminal coordination is inherently service composition, it should adopt the corresponding service discovery protocols and locate required services position in the network.This research studies the ubiquitous network interconnection technology and service discovery technology. Interconnection technology in the ubiquitous network mainly focuses on interconnection between the ubiquitous network extension layer and the access network. Using the interconnection scheme based on gateway, we complete the design of hardware and software on S3C6410chip. Considering the gateway data load, it is equipped with a plurality of network access interface to improve the efficiency of data transmission, it can simultaneously access the network and concurrent transmission data. Discovery protocol service is proposed based on service access point. It also designs service discovery and service discovery messages specific process. The protocol classifies nodes attribution in accordance with the node class of service and the physical location of nodes. It recommends the service access point based on node capacity of equipment. The simulation results verify the validity of the agreement protocol, the message cost of the protocol is significantly reduced with a little response time delay, particularly in the case of the network scale expansion.Finally, the research builds the interconnection and service discovery demonstration platform, the application of the interconnection technology and service discovery technology research verifies the technical feasibility, provides a strong support as the key technology of the research in this paper and promotes the further development of ubiquitous network.