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To alleviate the pressure brought by the explosion of mobile video traffic on present cellular networks, small cell base stations (SBS) with caching ability are introduced. In this paper, we consider the caching strategy using network coding for mobile users over heterogeneous wireless network containing SBSs. We formulate an integer programming problem to minimize the average number of packets downloaded...
To support the emerging next era of mobile wireless networks, researchers have made a great deal of efforts in promising techniques in multimedia services - the statistical quality-of-service (QoS) technique, which has been proved to be effective in statistically guaranteeing delay-bounded video transmissions over the time-varying wireless channels. On the other hand, as one of the 5G-promising techniques,...
In this work, we propose an auction-based resource negotiation for flexible video traffic offloading over heterogeneous wireless networks. The goal of the proposed system is to alleviate long term evolution (LTE) traffic congestion by offloading video traffic through WiFi network in a flexible scale while providing stable video streaming services to users with the minimum monetary cost. The fountain...
Mobile wireless networks increase in popularity and pervasiveness, we are faced with the problem of merging a diverse number of wireless networks. The wireless communications of fourth generation is expected to combine a potentially large number of heterogeneous wireless technologies in what could be considered a vast step forward toward universal seamless access. One of the main problems for seamless...
The concept “Always Best connected“ (ABC) is one of the main challenges in heterogeneous wireless networks. Based on the functionality of ABC, the users can be always connected to different services anywhere at anytime with multi-interfaces devices. The vertical handover decision is an efficient solution that can used to ensure the ABC paradigm. Thisenhanced vertical handover decision technique paper...
The next generation wireless network (NGWN) is envisioned as convergence of heterogeneous wireless networks. The vertical handoff plays an important role in supporting the service continuity and guaranteeing the quality of service (QoS). How to select the target network becomes the vital issue of designing the vertical handoff algorithm. In this paper, we propose a novel service-adaptive multi-criteria...
Channel allocation scheme on heterogeneous wireless networks is studied. The contributions of our work are threefold. First, by using network queuing theory, traffic overflowing based channel allocation scheme is presented and analyzed for heterogeneous wireless networks in terms of the connection-level QoS. To decrease channel interference, traffic overflowing are restricted within pre-defined channels...
One of the most challenged area in fourth generation wireless network is service continuity, i.e., when a mobile node is moving in an overlapping area continuous service must need so there a technique is used called “HANDOVER”. This technique is used to achieve the service continuity, for this we must rely on seamless vertical handover techniques with minimum processing delay. Thus it is necessary...
Provisioning continuous services while moving through heterogeneous wireless networks is a main issue in the fourth generation wireless Networks. An efficient vertical handover decision making algorithm that takes into account services' requirements, considers users' preferences and guaranties seamless handover over heterogeneous technologies is required. In this paper, we propose an intelligent context-aware...
The advancement in wireless networking technologies and portable devices has motivated the explosive interests in heterogeneous wireless environments. However, the mobility and diversity of both devices and users bring new challenges for the design of mobile Internet applications. Seamless mobility support has always been one of the key problems. In this paper, we study context-aware adaptation for...
In wireless heterogeneous environment, the integration of wireless access network will be accomplished by seamless handover which contains many challenges i.e. service mobility, vertical handover, common authentication, unified accounting/billing, security mechanisms, QoS and service provisioning, etc. Toward this direction, our research aims to provide a complete integration of heterogeneous network...
The integration of heterogeneous wireless networks has been studied for some time. Wireless networks can be complementary by providing additional resources to one another if properly integrated. For example, 3G networks offer increased coverage, but they have a low capacity for data transmission. In contrast, WLANs (Wireless Local Networks) offer a limited coverage range while allowing high rates...
Future wireless network must be able to coordinate services within a diverse network environment. One of the challenging problems for coordination is the selection of optimal network depending upon the type of demanding application. There are different types of Internet applications and network interfaces. The quality of service requirement varies from one application to another. The present work...
In the next generation wireless network a mobile node will be multihomed to utilize multiple wireless access technology simultaneously. The seamless mobility management and quality of service support are the challenging issues for such a heterogeneous wireless network. Each multihomed mobile node has multiple care of addresses corresponding to multiple network interfaces associated with it. An address...
The increasing demand for all time and every where services requires the network operators to integrate different kinds of wireless and cellular networks. To enable this integration, it is important that users can roam freely across networks. But, as different technologies are involved, the problem of vertical handover (VHO) needs to be addressed. Solutions in the literature lack intelligence and...
This paper proposes a measurement mechanism of IP performance metrics for network mobility (NEMO) in heterogeneous wireless networks. The key idea of the proposed mechanism is that mobile nodes (MNs) can get IP performance metrics irrespective of the presence or absence of measurement functionality. That is, the proposed mechanism does not require MNs to be involved in measuring IP performance metrics...
There is a problem of unfairness in allocation of radio resources among heterogeneous mobile terminals in heterogeneous wireless networks. Low-capability mobile terminals (such as single-mode terminals) suffer high call blocking probability whereas high-capability mobile terminals (such as quad-mode terminals) experience very low call blocking probability, in the same heterogeneous wireless network...
In the heterogeneous wireless networks, the optimal network selection problem is one of the key issues. QoS aware path selection scheme is proposed in this paper, which estimates required bandwidth ratio based on the QoS requirements of target service and the SINR of each path. The proposed scheme can select the optimal path which can satisfy the QoS requirements among many heterogeneous wireless...
Effective link-layer trigger mechanism can significantly influence the handover performance and determine whether the handover completes successfully. The predictive handover framework that employs the required handover time and predicted signal power level to generate link trigger was proposed. Because this scheme doesn't consider the moving condition of the mobile terminal (MT), it would increase...
In recent years, the mobile equipments with powerful functions and convenient service feature are getting more and more popular. Those mobile equipments not only provide us many types of wireless network connections services but also with one of popular service which is video streaming. However, the most concerned problem is handover between networks during the video streaming transmission. So we...
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