Wireless Heterogeneous Networks
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Contents |
Description
Motivation
Nowadays, a significant fraction of mobile devices in the market is equipped with multiple wireless interfaces. These technologies have been developed separately and therefore offer different coverage, data rate and services. Let us report two classic examples. Cellular networks have been designed to have high coverage area, low/medium data rates and mainly to provide speech services. On the contrary, IEEE 802.11 WLANs have been designed for local and small areas, medium/high data rates and mainly for data services. Such technologies can coexist in the same environment and also interwork so as to create a heterogeneous platform able to offer more services, higher coverage and higher data rates to mobile end-users.
Goal
We focus on two main topics:
- mobility management
- simultaneous use of multiple interfaces for a single session
As for mobility management the main challenges are: (i) how to identify a mobile nodes with several IP addresses, (ii) when decide to switch the communication from one network to another and (iii) how to manage the communication of this change of interface to the networks composing the heterogeneous system.
As for the simultaneous use of multiple interface for a single session, the main issue to be investigated is how to multiplex/demultiplex the information to be sent through the multiple wireless paths so as to increase user experienced quality. The analysis is conducted as a multipath routing problem. Mainly the use of source coding techniques is studied.
Publications
- P. Dini, J. Nin Guerrero, J. Mangues, L. L. Dai, S. Addepalli, Interworking Scheme Using Optimized SIP Mobility for MultiHomed Mobile Nodes in Wireless Heterogeneous Networks, in Proceedings of IEEE 71st Vehicular Technology Conference: VTC2010-Spring 16–19 May 2010, Taipei, Taiwan [1]
- P. Dini, N. Baldo, J. Nin Guerrero, J. Mangues, S. Addepalli, L. L. Dai, Distributed Call Admission Control for VoIP over 802.11 WLANs based on Channel Load Estimation, in Proceedings of the IEEE International Conference on Communications (ICC-2010), 23-27 May 2010, Cape Town (South Africa) [2]
- N.Baldo, P. Dini, J. Nin-Guerrero, User-driven Call Admission Control for VoIP over WLAN with a Neural Network Based Cognitive Engine, International Workshop on Cognitive Information Processing, Elba Island, Italy, June 2010
- P. Dini, M. Portolés, J. Nin Guerrero, J. Mangues, L. L. Dai, S. Addepalli, A reconfigurable test platform to experiment with wireless heterogeneous networks in a laboratory, in Inderscience International Journal of Communication Networks and Distributed Systems (IJCNDS), Special Issue: Recent Advances in Test-bed Driven Networking Research, Vol. 5, No. 1/2, pp. 1-4, June 2010
