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Caching at the small base station (SBS) is apromising architecture to alleviate the highly-loaded wireless video networks. SBS can cache popular video files, thus serves mobile users without going through backhaul connection to the core network and provides content- level offloading. This paper proposes a novel method for the content caching problem that optimizes cache performance. Our proposed algorithm...
Due to the limited node degree and fragile links, design and management of free space optical (FSO) networks is still a great challenge. In this paper, based on a tiered mobile FSO network model, a localized Delaunay triangulation (LDT) algorithm for the topology control of the upper tier is proposed. Then we study how the lower tier is supported by the upper tier. An effective dynamic multipoint-to-point...
It is necessary to protect services and users from diversified sources of cyber attacks even in complexly interconnected systems and networks. If a large number of smartphones in a mobile network are controlled by malware, they may be exploited to attack an application service in a fixed network. In this case, the conventional approach, which only protects the ingress and egress of services, cannot...
In heterogeneous network environment, it is important to choose an appropriate access network for a Multimode Mobile Terminal (MMT). Currently, there are some methods proposed to make network access selection decision. However, those methods didn't consider some dynamic attributes and could not offer effective handoff strategies. In this paper, we introduce an Intelligence Access Selection Scheme...
Content centric networks (CCN) is a new content-oriented network paradigm. It changes the communication mode from where to what. CCN can realize efficient content transmission and support consumer mobility inherently because of its receiver-driven characteristic. But it cannot handle provider mobility effectively since the movement will lead to the entire routing information updating. In this paper,...
Long registration delay and signaling cost restrict the practical deployment of MIP. Proxy Mobile IPv6 has been proposed to overcome limitation of Mobile IP, which can avoid tunneling overhead and support of hosts in the mobility management. In this paper, we propose an extension protocol based on Proxy Mobile IPv6 to reduce the overhead of Local Mobile Anchor and decrease handoff delay. When the...
With the development of wireless communication technologies and mobile Internet, the demand for the ubiquitous service is increasing dramatically. However, there are many critical issues which prevent the performance in accessing the ubiquitous heterogeneous wireless networks. So the subject has become the focus of many research institutions. We establish a practical testbed which includes the different...
To support mobile nodes moving across different networks as a whole, the IETF NEMOv6 (RFC 3963) has been proposed. Compared with Mobile IPv6 protocol, the NEMOv6 provides a method to enable a network moving entirely. Mobile Router (MR) is introduced to the NEMOv6, which performs mobility management function for the entire mobile network. All nodes belonged to the mobile network, fixed or mobile, are...
An entire network may move as a unit and change its point of attachment to the Internet dynamically. To support this kind of network mobility, a network mobility basic support protocol for IPv6 (NEMOv6) has been proposed by IETF. This paper analyzes the characteristics of IPv6-based network mobility management, and simulates handoff performance of a mobile router (MR) with a subnet, including one...
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