【摘要】 针对现有固定宽带有线、无线接入技术存在的不足,本文结合Adhoc技术和移动IP技术,提出了一种支持IP漫游的多跳接入方式,包括组网设计及协议扩展。其组网方式为:边缘接入采用多跳Adhoc技术,主干接入采用分层移动IPv6技术。多跳Adhoc网络大大增加了网络的覆盖范围,减轻了网络铺设成本,且支持宽带接入;分层移动IPv6降低了域内切换的信令开销和时延。同时,对现有的分层移动IPv6协议进行扩展,实现了主干网络与边缘多跳网络的有机结合。移动用户不但能以较低的信令开销实现全局的IP漫游,还能保证进入同一MANET网络中的移动节点直接通信,减轻了主干网络的传输负担,也保证了突发情况下节点能通过边缘MANET网络保持链路畅通。更多还原

【Abstract】 In order to cover the shortages of the existing fixed broadband wired and wireless access technologies, this paper proposes a global IP roaming multi-hop access framework and its protocol extension based upon Ad hoc and mobile IP technologies. The new framework merges multi-hop Ad hoc into its edge part and Hierarchical Mobile IPv6(HMIPv6)into its backbone part. The multi-hop Ad hoc networks well expand network coverage, thus reduces disposal cost, and broadband access is also supported while HMIPv6 reduces signaling cost and handover delay in the intra-domain handovers. The existed HMIPv6 protocol is extended to integrate the backbone networks with the edge multi-hop networks perfectly. This realizes the MN’s global IP roaming with low signaling cost, and makes it possible for the MNs in the same edge MANET to communicate with each other directly. Thus, it helps to reduce the backbone transmission burden, and is also helpful for the MN to keep link connections through the edge MANET in emergencies.更多还原