| 摘要 |
In a mobile Internet Protocol (IP) environment, intra-site handovers are more efficiently and effectively accomplished by employing a hierarchical, double-protocol approach to mobility management. At the Internet site level, IP data packets destined for a visiting mobile terminal are tunneled from an Internet site level node called a Mobility Management Agent (MMA) to the mobile terminal in accordance with a Multicast routing protocol and the mobile terminal's Multicast address. Outside the Internet site, the IP data packets are routed between the MMA and correspondent nodes in accordance with the rules and procedures associated with Mobile IP, particularly Mobile IP version 6. By employing a Multicast routing protocol at the Internet site level, the mobile terminal need not re-register with its home agent or the MMA each time it undergoes an intra-site handover, thereby conserving time and network overhead, resulting in a more efficient and effective handover procedure.
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