Fault-Tolerant Mobile Communication Network based on IEEE 802.11 and Mobile IP

摘要

For supporting mission-critical applications in a mobile computing and communication system, hybrid checkpointing has been proposed. Recently, wireless LAN protocols such as IEEE 802.11 and HIPERLAN are getting popular and communication with mobile station is realized by using Mobile IP in the Internet. This paper proposes a novel hybrid checkpoint protocoll Here, message logging for mobile stations is achieved based on broadcast property of wireless LAN protocols. In addition, by extending Mobile IP, network overload in recovery is avoided. For both checkpointing and recovery in the proposed protocol, all required information is piggied back to messages. That is, no additional message is required.