In this work,the impact of hop constraints on the CAPEX of multi-layer IP/MPLS over WSON networks is evaluated under different scenarios. By routing lightpaths with different number of transparent hops,the cost of net...In this work,the impact of hop constraints on the CAPEX of multi-layer IP/MPLS over WSON networks is evaluated under different scenarios. By routing lightpaths with different number of transparent hops,the cost of networks varies significantly. This effect is thoroughly analyzed with a heuristic algorithm for different network topologies belonging to some European network operators. The main conclusion extracted is that limiting the transparent reach in such multi-layer networks can give a good tradeoff between CAPEX of IP/MPLS networks and WSON networks,and even lead to signifi cant savings in CAPEX when compared to longer lightpaths routing strategies.展开更多
3GPP LTE(Long Term Evolution)以其较高的带宽可以为用户提供更丰富的多媒体业务。但是,每个LTE运营商最关心的还是想通过有效的运维成本(OPEX.Operational Expenditure)来取得较高的利润。因此,在LTE中控制运维成本将成为一个非常具...3GPP LTE(Long Term Evolution)以其较高的带宽可以为用户提供更丰富的多媒体业务。但是,每个LTE运营商最关心的还是想通过有效的运维成本(OPEX.Operational Expenditure)来取得较高的利润。因此,在LTE中控制运维成本将成为一个非常具有挑战性的问题。本文详细介绍3GPP中为LTE所提出的一种新运维策略,即自组织网络(SON,Self-Organizing Networks)。LTE运营商通过SON机制可以明显降低OPEX,从而进一步提升LTE的竞争优势。展开更多
基金jointly supported by Jiangsu Government Scholarship for Overseas studies,Chinathe open fund of State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University,China(No. 2015GZKF03006)Research Center of Optical Communications Engineering & Technology,Jiangsu Province(No.ZSF0201)
文摘In this work,the impact of hop constraints on the CAPEX of multi-layer IP/MPLS over WSON networks is evaluated under different scenarios. By routing lightpaths with different number of transparent hops,the cost of networks varies significantly. This effect is thoroughly analyzed with a heuristic algorithm for different network topologies belonging to some European network operators. The main conclusion extracted is that limiting the transparent reach in such multi-layer networks can give a good tradeoff between CAPEX of IP/MPLS networks and WSON networks,and even lead to signifi cant savings in CAPEX when compared to longer lightpaths routing strategies.
