hybrid video streaming over mobile networks

HYBRID VIDEO STREAMING OVER

MOBILE NETWORK

Presented By :

VISHNU K N (AMAMEEC062)ELECTRONICS & COMMUNICATIONAL-AMEEN ENGINEERING COLLEGE

INTRODUCTION

Market research shows that video streaming currently

represents more than 50% of the mobile internet traffic

and this fraction will increase to 72% by 2019.

VIDEO STREAMING OVER MOBILE NETWORKS

1. UNICAST SERVICE

2. MULTICAST SERVICE

UNICAST SERVICE

Current cellular networks mostly provide Unicast service.

UNICAST SERVICE

Base station may setup a unicast connection to each mobile devices using the best MCS mode.

Transmitting at higher MCS mode allows the mobile device to receive at higher data rates.

Unicast service consumes excessive mobile network resources.

MULTICAST SERVICE

It concurrently delivers a live video stream to all interested

mobile users.

MULTICAST SERVICE

Multicast is effective for serving many users watching the same video.

Multicast maximize the number of served users without consuming excessive network bandwidth.

Each video is transmitted with the MCS mode suitable to the mobile devices with worst channel conditions.

MULTICAST SERVICE

1). Independent Cell Network

Neighboring cells operate without coordination

2). Multi cell Single Frequency Network

Several neighboring cells synchronously transmit

identical signals to all mobile devices in those cells.

HYBRID VIDEO STREAMING

Unicast leads to higher network load, but lower energy consumption.

Multicast results in lower network load, but higher energy consumption.

Concurrently utilize unicast and multicast for minimizing

the energy consumption as well as load on cellular network.

HYBRID VIDEO STREAMING

HYBRID VIDEO STREAMING ALGORITHMS

Independent Cell Networks

1. SCOPT (Single Cell OPTimum)

2. SCG (Single Cell Greedy)

Multi Cell Single Frequency Network

1. SFNOPT (Single Frequency Network OPTimum)

2. SFNG (Single Frequency Network Greedy)

SYSTEM MODEL

SYSTEM MODELALLOCATION WINDOW

A pair of t [1,T] and s [1, S] uniquely determines a resource block∈ ∈

SYSTEM MODELSYMBOLS USED

The optimal allocation

1. The average energy saving across all mobile devices is maximized.

2. No more than dTS blocks are consumed by the on demand streaming service.

3. All mobile devices watching video v receive at rate rv for smooth play out.

MATHEMATICAL FORMULATION

Number of mobile devices

Wv,m,z ( v Є [1,V], m Є [1,M], z Є [1,Zv] )

Wv,m,z = 1 ; unicast

Wv,m,z >1 ; multicast

MATHEMATICAL FORMULATION

Boolean Decision variable

Xv,m,z ( v Є [1,V], m Є [1,M], z Є [1,Zv] )

Xv,m,z = 1 ; mode m

Xv,m,z =0 ; otherwise

Intermediate Boolean variable

Yv,m,n,z ( v Є [1,V], m,n Є [1,M] n<m, z Є [1,Zv] )

Yv,m,n,z = 1 ; mode n

Yv,m,n,z =0 ; otherwise

MATHEMATICAL FORMULATION

(3a) is to maximize the average energy saving.(3b) ensures that the on-demand streaming service only consumes up to network resources.(3c) guarantees that every mobile device receives its allocation window at a feasible MCS mode.

SCG ALGORITHM

SCG ALGORITHM

PERFORMANCE

High energy saving

Serve large number of mobile users

More elastic than unicast and multicast only approaches

PERFORMANCE

Service Ratio

Spectral Efficiency

Energy Saving

Video Quality

Frame Loss Rate

Initial Buffering Time

Number Of Re-buffering Events

CONCLUSION

Discussed the resource allocation problem for large scale

video streaming over cellular networks and algorithms to

utilize both unicast and multicast.