A Composition and Recovery Strategy for Mobile Social Network Service in Disaster
A Composition and Recovery Strategy for Mobile Social Network Service in Disaster
复制标题
灾难中移动社交网络服务的组成与恢复策略
DOI：
10.1093/comjnl/bxu044
复制
发表时间：
2015-04
期刊：
影响因子：
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通讯作者：
Xuesong Qiu
中科院分区：
文献类型：
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作者：
Danmei Niu;Lanlan Rui;Cheng Zhong;Xuesong Qiu
移动的社交网络服务（MSNS）为用户提供日常服务，也可以在紧急情况下使用，例如自然灾害。如何在移动的设备之间快速有效地进行服务组合和恢复是移动服务网络系统的重要研究方向之一。本文提出了一种综合的策略，适用于MSNS在自然灾害期间。在通信设备有限的情况下，多个设备可以协同工作，为用户提供可靠的组合服务，也称为服务组合过程。此外，当某些设备发生故障，组合服务中断时，所提出的恢复过程可以快速重建服务路径。在这两个过程中分别使用合成和回收成本函数。其目标是在满足服务质量要求的每个过程中找到成本函数值最小的服务路径或恢复路径。仿真结果表明，该策略不仅减少了中断次数和恢复时间，而且提高了服务请求的成功率，性能优于其他同类策略。
Mobile social network service (MSNS) provides daily services for the user and can also be used in emergencies, such as natural disasters. How to conduct service composition and recovery among mobile devices quickly and efficiently is one of the important research areas of MSNS. This paper puts forward a comprehensive strategy applied to MSNS during natural disasters. When communication facilities are limited, several devices can work cooperatively to provide users with reliable composite service, also known as the service composition process. In addition, when some of the devices fail and the composite service interrupts, the presented recovery process reconstructs a service path quickly. Composition and recovery cost functions are used in the two processes separately. The goal is to find the service path or the recovery path with minimal cost function value in each process that satisfies the quality-of-service requirement. The simulation results show that the proposed strategy not only reduces the interrupt number and recovery time but also improves the success rate of the service request, making the performance of this strategy better than that of the other similar strategies.