探讨基于公安移动信息网的云会商系统设计及应用。首先介绍云会商系统的概况,其次详细阐述云会商系统的设计,包括系统架构、组成、功能、安全和可靠性等方面的设计;再次,介绍云会商系统的关键技术,包括云化虚拟化技术、多点控制单元(Mul...探讨基于公安移动信息网的云会商系统设计及应用。首先介绍云会商系统的概况,其次详细阐述云会商系统的设计,包括系统架构、组成、功能、安全和可靠性等方面的设计;再次,介绍云会商系统的关键技术,包括云化虚拟化技术、多点控制单元(Multipoint Control Unit,MCU)资源池化、会话初始协议(Session Initiation Protocol,SIP)和可伸缩视频编码(Scalable Video Coding,SVC)多流转发等;最后,探讨云会商系统的应用场景。展开更多
The paper design mobile information collection system based on lnternet of Things, implemented access gateway by smart mobile devices through a variety of ways, such as Wi-Fi and access the underlying perceptual infor...The paper design mobile information collection system based on lnternet of Things, implemented access gateway by smart mobile devices through a variety of ways, such as Wi-Fi and access the underlying perceptual information based on ZigBee wireless sensor networks. On the one hand, For information sensitivity of the sensor network, we design the mobile terminal through the gateway access authentication protocol, and effective solute the authentication and infbnnation between mobile devices and gateways, gateway and sensor network nodes obtain permission problem; on the other hand, according to the practical application of mobile information collection characteristics, the paper proposed information collection strategy based on historical data movement path to solve the problem for too long the device connection is established when the mobile smart devices collecting information along fixed lines, increasing the actual data transmission time and improve the efficiency of information transmission.展开更多
Cellular networks are overloaded due to the mobile traffic surge,and mobile social networks(MSNets) can be leveraged for traffic offloading.In this paper,we study the issue of choosing seed users for maximizing the mo...Cellular networks are overloaded due to the mobile traffic surge,and mobile social networks(MSNets) can be leveraged for traffic offloading.In this paper,we study the issue of choosing seed users for maximizing the mobile traffic offloaded from cellular networks.We introduce a gossip-style social cascade(GSC) model to model the epidemic-like information diffusion process in MSNets.For static-case and mobile-case networks,we establish an equivalent view and a temporal mapping of the information diffusion process,respectively.We further prove the submodularity in the information diffusion and propose a greedy algorithm to choose the seed users for traffic offloading,yielding a sub-optimal solution to the NP-hard traffic offloading maximization(TOM) problem.Experiments are carried out to study the offloading performance,illustrating that the greedy algorithm significantly outperforms the heuristic and random algorithms,and user mobility can help further reduce cellular load.展开更多
文摘探讨基于公安移动信息网的云会商系统设计及应用。首先介绍云会商系统的概况,其次详细阐述云会商系统的设计,包括系统架构、组成、功能、安全和可靠性等方面的设计;再次,介绍云会商系统的关键技术,包括云化虚拟化技术、多点控制单元(Multipoint Control Unit,MCU)资源池化、会话初始协议(Session Initiation Protocol,SIP)和可伸缩视频编码(Scalable Video Coding,SVC)多流转发等;最后,探讨云会商系统的应用场景。
文摘The paper design mobile information collection system based on lnternet of Things, implemented access gateway by smart mobile devices through a variety of ways, such as Wi-Fi and access the underlying perceptual information based on ZigBee wireless sensor networks. On the one hand, For information sensitivity of the sensor network, we design the mobile terminal through the gateway access authentication protocol, and effective solute the authentication and infbnnation between mobile devices and gateways, gateway and sensor network nodes obtain permission problem; on the other hand, according to the practical application of mobile information collection characteristics, the paper proposed information collection strategy based on historical data movement path to solve the problem for too long the device connection is established when the mobile smart devices collecting information along fixed lines, increasing the actual data transmission time and improve the efficiency of information transmission.
基金supported by the National Basic Research Program of China(973 Program) through grant 2012CB316004the Doctoral Program of Higher Education(SRFDP)+1 种基金Research Grants Council Earmarked Research Grants(RGC ERG) Joint Research Scheme through Specialized Research Fund 20133402140001National Natural Science Foundation of China through grant 61379003
文摘Cellular networks are overloaded due to the mobile traffic surge,and mobile social networks(MSNets) can be leveraged for traffic offloading.In this paper,we study the issue of choosing seed users for maximizing the mobile traffic offloaded from cellular networks.We introduce a gossip-style social cascade(GSC) model to model the epidemic-like information diffusion process in MSNets.For static-case and mobile-case networks,we establish an equivalent view and a temporal mapping of the information diffusion process,respectively.We further prove the submodularity in the information diffusion and propose a greedy algorithm to choose the seed users for traffic offloading,yielding a sub-optimal solution to the NP-hard traffic offloading maximization(TOM) problem.Experiments are carried out to study the offloading performance,illustrating that the greedy algorithm significantly outperforms the heuristic and random algorithms,and user mobility can help further reduce cellular load.
