Route Optimization by the Use of Two Care-of Addresses in Hierarchical Mobile IPv6(Special Issue on Mobile Multimedia Communications)

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概要

• 論文の詳細を見る

• The IETF Mobile IPv6 enables any IPv6 node to both cache the Care-of Address associated with a mobile node's home address, and to directly send packets addressed to a mobile node at the Care-of Address using the IPv6 routing header. Support for optimizing the route is built in as a fundamental part of the protocol. Several hierarchical schemes have been presented recently on top of the Mobile IPv6. These schemes separate micro-mobility from macro-mobility and exploit a mobile node's locality. They can reduce the number of signaling messages sent to a home network and improve hand-off performance. However, existing hierarchical schemes do not achieve route optimization. When external correspondent nodes send packets to a mobile node, these packets are intercepted by an intermediate mobility agent encapsulated and routed to the mobile node. In this paper, we propose a new hierarchical scheme that enables any correspondent node to cache two Care-of Addresses;the mobile node's temporary address and the intermediate mobility agent's address. Also, we introduce two lifetimes managing the two Care-of Addresses. Until the lifetime associated with the mobile node's temporary address expires, a correspondent node can send packets directly to the mobile node. If the lifetime expires but the lifetime associated with the intermediate mobility agent's address has not expired, the correspondent node sends packets to the intermediate mobility agent. This proposal can reduce delay in packet delivery and optimize routing. Furthermore, based on the mobility of a mobile node, we introduce more reduced frequency of binding update and longer period of the lifetimes than the existing hierarchical schemes. Therefore, our proposal can reduce the binding update bandwidth as well as the packet delivery bandwidth lower than those of the IETE IPv6 and the existing hierarchical schemes.

• 社団法人電子情報通信学会の論文
• 2001-04-01

著者

• Hwang Chong-sun

  The Dept.of Computer Science And Engineering At Korea University

• Han Y‐h

  Samsung Ait Kyonggi‐do Kor

• HAN Youn-Hee

  the Dept.of Computer Science and Engineering at Korea University

• GIL Joon-Min

  the Dept.of Computer Science and Engineering at Korea University

• JEONG Young-Sik

  School of Computer and communication Engineering at Wonkwang University

• Gil J‐m

  Korea Inst. Of Sci. And Technol. Information Daejeon Kor

関連論文

• Route Optimization by the Use of Two Care-of Addresses in Hierarchical Mobile IPv6(Special Issue on Mobile Multimedia Communications)

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