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Due to the development of mobile communication, user demand and traffic increased, and various services were produced. With existing 3G networks, it was hard to demand these services and users' demand. Therefore, the 4G network has been developed. As evolving into 4G networks, much experimental and development software have been created. OAI is a hardware and software platform for 4G networks that...
In these days, the Internet is growing and the amount of user to use network increases rapidly. The mesh(ad-hoc) network has studied for many areas where people can't use the Internet. Also, mesh(ad-hoc) network is used for special purposes, and it expands its domain recently. However, low transfer rate and small coverage are a critical issue in mesh(ad-hoc) network. In this paper, it suggests improving...
Owing to an increase in mobile devices and the advent of the Internet of Things (IoT), mobile traffic has increased exponentially. Consequently, a wide range of research on handover has been conducted to provide mobile device users with stable network quality. Most research on handover uses a network-dependent method that establishes a new protocol or a method that can refine handover time; however,...
A programmable Network is a new architecture that can react the rapidly changing network service and fulfill diverse requirements of networks. In this paper, we develop OpenFlow testbed named Pi Stack Switch using low-priced Single Board Computer and OpenSource based virtual switch. Also, we implement programmable network using SDN controller called ONOS and Network-Hypervisor called OpenVirteX. Our...
Needs of new services and complexity of network are increasing rapidly nowadays. To resolve this states, this paper aim to implement VNF (Virtualized Network Function), which operates on the open network platform. And VNF is implemented based on existing open source. Especially, this paper focus on AP (Access Point) control using CoovaChilli. Also, it aims at perfect openness by contributing the open...
With the spread of mobile devices and development of the network, the user can use the data anytime anywhere. Especially, most users have become more sensitive to the quality of communication for the use of real-time video services. In this paper, we propose the SDN-based device-assisted network that improves network environment by device's feedback on the status of the network. When low network performance...
This paper proposes Mobility technology of Multi RAT (Radio Access Technology) terminal based on SDN (Software Defined Network). It improves transmission speed and reduce handoff latency by using two network interfaces. These network interfaces make dual link with APs (Access Point). Each link has the separate role, Active and Standby. Active Link is used for communication and Standby Link is used...
This paper proposes Mobility and HetNet-CA (Heterogeneous Network Carrier Aggregation) technology of Multi RAT(Radio Access Technology) terminal based on SDN (Software Defined Network). It improves transmission speed by using two network interfaces. These network interfaces make dual link with APs(Access Point) so that it can reduce handover latency.
Global research on B4G/5G is widely started. And software enabled wireless network evolution is largely impacted by IT industry — cloud computing, SDN, and CCN. However, most research on cellular network from academia is hard to deploy on real cellular network due to closed ecosystem and licensed spectrum. We propose an open source wireless switch as a research platform for B4G/5G network. Through...
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