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In this paper, we implement an Open Flow based fully functional 802.1X access network and an IP based cognitive access network which are interconnected as edge networks to our SDN core. We realize seamless mobility in the WLAN domain and mobility between WLAN and Cognitive networks for the clients with dual band support. The pre-installed flows on the backbone aggregate traffic from access networks...
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...
Our proposed solution is a Linux bonding approach to vertical handoff for heterogeneous networks. Currently, there are approaches of Linux bonding implementation for wired & wireless interfaces. The Linux bonding provides methods to aggregate multiple wired or wireless interfaces to support fault-tolerance and throughput improvement. The existing interface bonding allows the aggregation of homogeneous...
Aiming at moving aspect of heterogeneous wireless network, The paper puts forward a heterogeneous network mobile management mechanism- Identifiers Split Memory, Substitution Transmission Scheme ISMSTS, introduces the basic theory and the protocol process of ISMSTS detailed, and makes the performance analysis and the contrast with MIPv6 protocol. ISMSTS is the mobile management scheme based on the...
Wireless technology offers flexibility and mobility that enables users to access to any service including voice call, anytime, anywhere with any device. Transferring call or session across devices is also made possible with today's session management protocol such as SIP, provided the user knows the contact information of the target device. In this paper, we propose a method which simplifies the transfer...
Nowadays, mobile users wish to use their multi-interface mobile devices to access the Internet through network points of attachment (PoA) based on heterogeneous wireless technologies. They also wish to seamlessly change the PoAs during their ongoing sessions to improve service quality and/or reduce monetary cost. If appropriately handled, multihomed mobile nodes offer a potential solution to this...
In this paper we model the traffic of new and handoff calls in a single cell of wireless mobile networks by a finite buffer queueing system with two types of service classes and a so-called hysteresis multi-threshold based control policy. We describe the behavior of the system in term of a three-dimensional continuous-time Markov process (CTMP) and derive the steady-state distribution of the CTMP...
Transmission through short-range and short-term connected pocket switched Networks (PSN) would become more and more popular. In this paper, we study how a mobile wireless device achieves anonymous broadcasting in PSN. We split an original message into many segments and broadcast them at different times. These segments will be received, saved in buffer and forwarded by other devices with time delay...
Nowadays, the backbone network is capable of delivering countless information at extremely high performance and high throughput. However, the abundant information in the backbone may not be retrieved by the mobile users' fingertips. This paper developed the parallel channels content delivery and concurrent retrieval mechanisms so as to support timely and reliable access to the multicasting information...
In this paper, a concept of a network-driven adaptive video streaming is proposed and investigated in a state-of-the art UMTS/HSDPA network in order to alleviate the impact of strongly time-varying quality of wireless links on video quality. We propose making adaptation decisions in a radio access network based on channel-quality information available there. This is done by a so-called Multimedia...
With the increase of mobile and wireless communication in heterogeneous networks, the need for security has also increased. Mobile devices have to execute seamless and secure handover from one type of network to another. But before the actual execution, some security measures needs to be taken against denial of service and replay attacks. These measures require lengthy procedures for authentication...
This paper presents the concept of “mobile ATM,” a proposal for third-generation (3G) mobile communication network infrastructure capable of supporting flexible evolution of radio technologies from today's cellular and data services towards future wireless multimedia services. Mobile ATM provides generic mobility management and QoS-based transport capabilities suitable for integration of multiple...
This paper describes the design and implementation of a set of tools, called MobileChannel, for use with the Isis system. A sirnple scheme to support user mobility-switching a control point between replicated seraers-proaides a uniforrn mechanism to handle both client migrations and serl)er failures. The handoff mechanism is simplified by integrating a FIFO channel implementation into the seraer replication...
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