关于支持微移动MPLS实际应用的研究

Research on practical use of micro-mobile MPLS networks

移动MPLS是将移动IP与MPLS协议相结合以支持MPLS移动性的管理方案,但它只适合于宏移动而不能有效地运用于微移动,因为微蜂窝的应用导致了移动节点(MH)的切换率剧烈增加。在这样的情况下,MPLS基于普通的移动IP就不再是有效的解决方法。分级移动MPLS(H-MPLS)克服了移动MPLS的局限性,在相当的程度上减少了MH在切换过程中的延时。介绍了另一种支持微移动MPLS的方案:微蜂窝移动MPLS(MM-MPLS),它是一种融合了MPLS转发、定位信令以及软状态定位的管理方案。相比于H-MPLS,MH的切换时延将减小更多。

Mobile multi-protocol label switching （MPLS） is a scheme that integrates mobile IP and MPLS protocols to support mobility of MPLS, But it only fits macro-mobility and fails to support micro-mobility efficiently. Microcell implementation increases the handoff rate of the mobile hosts dramatically. Thus, in such environment, MPLS based on normal mobile IP is no longer an efficient solution. A hierarchical mobile MPLS （H-MPLS） approach was proposed to overcome the limitations of the mobile MPLS protocol. By using this hierarchical mobile MPLS, the delay of the mobile hosts during handoff periods is considerably reduced. This paper introduces another practical approach to extend the use of MPLS in micro mobility environment： micro cell mobile MPLS （MM-MPLS）, which is an incorporation of MPLS forwarding, localized signaling and soft-state location management scheme, Compared with H-MPLS, more handoff latency of the mobile host could be reduced.