• Thursday, 15 June, 9:00-10:30, Room Theatre Attic Studio
• Session Chair: Savo Glisic (University of Oulu, Finland)

09:00 Group Vertical Handover Management Based SDN-DMM-IPv6 RH

Mouad Idri (Namur University, Belgium)

Telecoms operators around the world have seen a fast growth of mobile broadband subscribers. This unprecedented growth demands a significant increase of wireless network capacity and has drawn attention toward possible limitation of the Quality of Service. Multiple network topologies are needed to meet heterogeneous service demands. Future 5G networks will manifest disparate types of services with different connectivity requirements. It is then challenging to tackle the mobility management in this environment for a group of mobile devices. The proposed solution such as LISP and LISP-MN are still centralized and week to face high simultaneous traffic demand. Network Mobility (NEMO) which is an extension of MIPv6 aiming to minimize independent handover is selected as a solution. For more flexibility and performance, this latter will be beneficial when joined with Software-defined network (SDN) that permits network operators to easily introduce new services and to simplify network management. In the same context, Distributed Mobility Management (DMM) is emerging as a new trend to blueprint future mobile network architectures in order to overcome the centralized aspect of the current mobile network. In this paper, a combined design based on SDN, DMM, NEMO and IPv6 is discussed to simplify group users' mobility and to maintain QoS of different applications. Integrating IPv6 and SDN, the aim of our proposition is to ensure access to varied services anywhere and anytime notwithstanding the available types of technologies. For this purpose, we suggest IPv6 Headers as a solution to guarantee group mobility management.

09:18 Analysis of Deployment Challenges of Host Identity Protocol

Ijaz Ahmad and Madhusanka Liyanage (University of Oulu, Finland); Mika E Ylianttila (University of Oulu & Centre for Wireless Communications, Finland); Andrei Gurtov (Aalto University, Finland)

Host Identity Protocol (HIP), a novel internetworking technology proposes separation of the identity-location roles of the Internet Protocol (IP). HIP has been successful from the technological perspectives for network security and mobility, however, it has very limited deployment. In this paper we assess HIP to find the reasons behind its limited deployment and highlight the challenges faced by HIP for its commercial use. We propose technological development and outline deployment strategies for the wide use of HIP. Furthermore, this paper investigates the use of HIP in Software Defined Networks (SDN) to evaluate its performance in new disruptive networking technologies. In a nutshell, this paper presents revealing challenges for the deployment of innovative networking protocols and a way ahead for successful and large scale deployment.

09:36 REARM: Renewable Energy Based Resilient Deployment of Virtual Network Functions

Sameer G Kulkarni and Mayutan Arumaithurai (University of Goettingen, Germany); K. K. Ramakrishnan (University of California, Riverside, USA); Xiaoming Fu (University of Goettingen, Germany)

Network Function Virtualisation (NFV) is becoming more prevalent in Data Center, Telecommunication and Enterprise networks, enabling the Virtual Network Functions (VNFs) to fast replace the traditional dedicated hardware based middleboxes. Ensuring high availability and fault tolerance of VNFs is cardinal to meet the performance and service level agreement requirements. Also, with the increasing electricity demands in the Information and Communications Technology (ICT) sector, especially for the data centers, the inclination towards employing renewable (green) resources to power up the data centers is also increasing. Mitigating the carbon footprint and curbing the energy costs have been the driving factors for push towards employing the green energy resources. However, the Green energy supply is rather intermittent and unstable. In this work, we study the impact of deploying VNFs in Green Data Centers (GDCs) and make a case for addressing the VNF reliability and high availability to effectively tackle the stability concerns of GDC. To this extent, we present REARM, which adopts the concept of Transient VNFs that rely on a very short advance warning time to seamlessly migrate the VNFs from GDC to a more reliable and stable Data Centers (SDCs). Our experiments with container based VNFs demonstrate that adaptive state transfer mechanism results into significant reduction in both computation and communication overheads for maintaining the NF replica, and warning time of 30ms is sufficient to failover VNFs (serving 1K flows) within a data center to ensure high availability of NFV services.

09:54 On the Integration of Verticals Through 5G Control Plane

Kashif Mahmood (Telenor, Norway); Toktam Mahmoodi (King's College London, United Kingdom (Great Britain)); Riccardo Trivisonno (Huawei Technologies, Germany); Anastasius Gavras (Eurescom GmbH, Germany); Dirk Trossen (InterDigital Europe, United Kingdom (Great Britain)); Marco Liebsch (NEC Europe Ltd, Germany)

To enable the variety of verticals to flexibly deliver services over 5G, a new control plane architecture and system concept is needed. To this end we present a vision for the 5G control plane which allows the verticals to provide tailored services over the communication infrastructure. We discuss in detail the enabling concepts which are essential to realize this vision. Finally we present a reference framework centered around a novel control plane for vertical integration but which also takes into account the relevant ecosystem such as the underlying infrastructure, the data plane and the management and orchestration framework. We believe that the 5G control plane vision and the accompanying reference framework presented in this paper are an important puzzle piece in the overall 5G architecture.

10:12 Proactive Edge Computing in Latency-Constrained Fog Networks

Mohammed Saad ElBamby (University of Oulu, Finland); Mehdi Bennis (Centre of Wireless Communications, University of Oulu, Finland); Walid Saad (Virginia Tech, USA)

In this paper, the fundamental problem of distribution and proactive caching of computing tasks in fog networks is studied under latency and reliability constraints. In the proposed scenario, computing can be either executed locally at the user device or offloaded to an edge cloudlet. Moreover, cloudlets exploit both their computing and storage capabilities by proactively caching popular task computation results to minimize computing latency. To this end, a clustering method to group spatially proximate user devices with mutual task popularity interests and their serving cloudlets is proposed. Cloudlets proactively cache the popular tasks of their cluster members to minimize computing latency. Additionally, the problem of distributing tasks to cloudlets is formulated as a matching game in which a cost function of computing delay is minimized under latency and reliability constraints. Simulation results demonstrate the effectiveness of the proposed scheme in minimizing the computing delay and guaranteeing the latency and reliability constraints.