Please use this identifier to cite or link to this item:
http://bura.brunel.ac.uk/handle/2438/12253
Title: | Topology forming and optimization framework for heterogeneous wireless back-haul networks supporting unidirectional technologies |
Authors: | Kretschmer, M Batroff, P Ghinea, G |
Keywords: | QoS;Multi-radio WNM;MPLS;IEEE 802.21;Traffic engineering;Unidirectional links;All-IP network |
Issue Date: | 2013 |
Publisher: | Elsevier |
Citation: | Journal of Network and Computer Applications, 36, pp. 698-710, (2013) |
Abstract: | Wireless operators, in developed or emerging regions, must support triple-play service offerings as demanded by the market or mandated by regulatory bodies through so-called Universal Service Obligations (USOs). Since individual operators might face different constraints such as available spectrum licenses, technologies, cost structures or a low energy footprint, the EU FP7 CARrier grade wireless MEsh Network (CARMEN) project has developed a carrier-grade heterogeneous multi-radio back-haul architecture which may be deployed to extend, complement or even replace traditional operator equipment. To support offloading of live triple-play content to broadcast-optimized, e.g., DVB-T, overlay cells, this heterogeneous wireless back-haul architecture integrates unidirectional broadcast technologies. In order to manage the physical and logical resources of such a network, a centralized coordinator approach has been chosen, where no routing state is kept at plain WiBACK Nodes (WNs) which merely store QoS-aware MPLS forwarding state. In this paper we present our Unidirectional Technology (UDT)-aware design of the centralized Topology Management Function (TMF), which provides a framework for different topology and spectrum allocation optimization strategies and algorithms to be implemented. Following the validation of the design, we present evaluation results using a hybrid local/centralized topology optimizer showing that our TMF design supports the reliable forming of optimized topologies as well as the timely recovery from node failures. |
URI: | http://www.sciencedirect.com/science/article/pii/S108480451200269X http://bura.brunel.ac.uk/handle/2438/12253 |
DOI: | http://dx.doi.org/10.1016/j.jnca.2012.12.022 |
ISSN: | 1084-8045 1095-8592 |
Appears in Collections: | Dept of Computer Science Research Papers |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Fulltext.pdf | 3.48 MB | Adobe PDF | View/Open |
Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.