Design and evaluation of a decentralised information service architecture for IEEE 802.21 networks

作者：Buiati Fabio; Garcia Villalba Luis Javier; Ruperez Canas Delfin; Corujo Daniel; Aguiar Rui L

来源：International Journal of Ad Hoc and Ubiquitous Computing, 2014, 15(4): 275-288.

DOI：10.1504/IJAHUC.2014.061027

• mobility
• IEEE 802.21
• heterogeneous networks
• media independent handover
• decentralised
• ubiquitous computing

The deployment of wireless technologies such as Wi-Fi, WIMAX and LTE brings to the mobile user the opportunity to switch from one network to another, in a seamless manner. To accomplish this, the user must be able to discover which types of network connectivity are available. The IEEE 802.21 standard specifies a media independent information service (MIIS) providing capabilities for discovering network information within a geographical area. The representation and distribution of mobility information in heterogeneous networks are a big challenge, especially in multi-operator environments. In this paper, we introduce a decentralised information service architecture that improves the user experience and ensures scalability for large system deployments. Additionally, an evaluation using the NS-2 network simulator is presented. The results demonstrate that our proposal outperforms the existing approaches in terms of query delay, users optimal handovers and communication overhead, contributing to a traffic decrease at the operators core network and internet.

• 出版日期2014