Wireless Network Virtualization: A Survey, Some Research Issues and ChallengesChengchao Liang and F. Richard Yu

SLIDES BY :EHSAN TAGHIPOUR

AMIRKABIR UN IVERS ITY OF TECHNOLOGY - TEHRAN POLYTECHNIC

Contents• Introduction• Overview• Motivations• Framework• Performance Metrics• Enabling Technologies• Challenges & Broader Perspectives

Introduction• Virtualization (Memory ,Storage ,Machine ,Data Center)• Virtualization in Wired Networks (VPN , vLan )• MVNOs (Mobile Virtual Network Operators)• Virtualization reduce Capex & Opex• Easy migration to new products by Isolation• Technical and non-technical Challenges

Introduction

Overview

Brief History

Projects

SDN and OpenFlow

Motivations

Business Models

Requirements

Framework

Radio Spectrum Resource

Wireless Network

Infrastructure

Wireless Virtual Resource

Wireless Virtualization

Controller

Performance Metrics

Traditional Metrics

Virtualization-Specific Metrics

Enabling Technologi

es

IEEE 802.11-based

Cellular-based

IEEE 802.16-based

Others

Challenges

Isolation

Control Signaling

Resource Dis covery and

Allocation

Mobility Management

Network Management

Security

Broader Perspectiv

es

Cognitive Radio and Networks

Multi-tier Wireless Networks

Cloud Computing

Overview of network virtualization1. Brief History of Wired Network Virtualization

VLAN VPN Active and programmable networks Overlay network

2. Projects on Network Virtualization CABO 4WARD PlanetLab GENI VITRO

3. SDN - Software Defined Networking and OpenFlow

Motivations, Business model & Requirements of wireless network virtualization

A. What is Wireless Network Virtualization?B. What are the Business Models of Wireless

Network Virtualization?

Business Model Roles InP MVNP (Mobile Virtual Network Provider) MVNO (Mobile Virtual Network Operator) SP (Service Provider)

Motivations, Business model & Requirements of wireless network virtualizationC. Why Need Wireless Network Virtualization?

D. What are the Requirements of Wireless Network Virtualization?Basic

requirements:

Coexistence

Flexibility, manageability and programmability

Isolation

Additional requirement

s:Heterogeneity

Revisitation and scalability

Stability and convergence

Mobility

Resource utilization

Framework of wireless network virtualizationA. Radio Spectrum Resource

B. Wireless Network Infrastructure Infrastructure sharing Full network sharing

C. Wireless Virtual Resource Spectrum-level slicing Infrastructure-level slicing Network-level slicing Flow-level slicing

D. Wireless Virtualization Controller

Framework of wireless network virtualization

An example of infrastructure slicing.

An example of network-level slicing

Framework of wireless network virtualization

An example of infrastructure slicing.

An example of network-level slicing

Performance metrics of wireless network virtualizationA. Performance Metrics of Traditional Wireless Networks

a) Costsb) Revenuec) Coverage and capacity (throughput)

Bandwidth Transmit power Network planning

d) Deployment efficiencye) Spectrum efficiencyf) Energy efficiencyg) QoSh) Signaling latency

Performance metrics of wireless network virtualizationB. Wireless Virtualization-Specific Metrics

a) Throughput between virtual entitiesb) Utilization and stress of substrate networksc) Delay and jitter between virtual entitiesd) Path length between virtual entitiese) Isolation level

Performance metrics of wireless network virtualization

Enabling technology for wireless networl virtualizationA. Classification

Radio access technologies Isolation level Control method Purpose

B. IEEE 802.11-based Wireless Network Virtualization

C. 3GPP LTE-based Wireless Network Virtualization

D. IEEE 802.16-based Wireless Network Virtualization

E. Wireless Network Virtualization in Heterogeneous Wireless Networks

F. Others

Enabling technology for wireless networl virtualization

An example of WiMAX virtualization

An example of LTE virtualization

Challenges and Broader perspectivesA. Challenges of Wireless Network Virtualization

Isolation Control signaling Resource discovery and allocation Mobility management Network management Security

B. Broader Perspectives

References• Liang, Chengchao, and F. Richard Yu. "Wireless network

virtualization: A survey, some research issues and challenges." Communications Surveys & Tutorials, IEEE 17.1 (2015): 358-380.