MBMS architecture in UMTS

1
MBMS architecture in UMTS

• Presentation by
• Christos Dionysiou
• Supervising Professor Andreas Pitsillides

2
Outline

• Introduction
• MBMS Overview
• Service Requirements
• Procedures
• MBMS Reference Architecture
• Potential Services
• Business Models
• Conclusions

3
Introduction

• IP Multicast in the UMTS standard
• 1 GTP-Tunnel per Multicast Group Member
• Packet Duplication (Waste of Radio Resources)
• Limited Radio Transmission Efficiency
• Solution
• MBMS (Multimedia Broadcast and Multicast Service)
• 1 GTP-Tunnel per Multicast Flow
• Less Amount of Data in the Network
• Efficient Use of Radio Resources

4
Outline

• Introduction
• MBMS Overview
• Service Requirements
• Procedures
• MBMS Reference Architecture
• Potential Services
• Business Models
• Conclusions

5
MBMS Overview

• MBMS defined in 3GPP as a point-to-multipoint
  (PTM) downlink bearer service for IP data in the
  PS domain
• Objectives
• Offer high speed Data Rates up to 256 kbit/s
• Enhance UMTS by a more efficient Multicast and
  Broadcast Mode

• Multicast Mode
• Subscription needed
• Authorization needed
• Received by Specific users

• Broadcast Mode
• No Subscription
• No Authorization
• Received by All users within the service area
• Service must be enabled locally

6
Outline

• Introduction
• MBMS Overview
• Service Requirements
• Procedures
• MBMS Reference Architecture
• Potential Services
• Business Models
• Conclusions

7
Service Requirements

• High Level Requirements
• An MBMS user service may have
• More than one Broadcast or Multicast services
  (not a combination)
• Broadcast or Multicast services with successive
  media sessions
• Different QoS for each media session
• Different MBMS transport services at different
  times or in parallel
• Synchronization between media sessions

8
Service Requirements (continued)

• High Level Requirements (continued)
• Other
• Service Classes
• Service Interworking (MBMS with e.g. MMS etc)
• Content Storage in the UE
• Data Formats and Types
• Notifications of Required Capabilities
• Interoperability (handset and codecs recognition)
• Delivery Verification
• Error protection (ex. interference, cell changes
  etc.)

9
Service Requirements (continued)

• User Level Requirements
• Charging (subscription based, key based, etc)
• Security (e.g. service preferences altering)
• Privacy
• Quality of Service
• Subscription Preferences

10
Outline

• Introduction
• MBMS Overview
• Service Requirements
• Procedures
• MBMS Reference Architecture
• Potential Services
• Business Models
• Conclusions

11
Procedures

• Multicast Mode Procedures

12
Procedures (continued)

• Broadcast Mode Procedures

13
Outline

• Introduction
• MBMS Overview
• Service Requirements
• Procedures
• MBMS Reference Architecture
• Potential Services
• Business Models
• Conclusions

14
MBMS Reference Architecture

• UMTS Main Elements
• CN
• GGSN (Gateway GPRS Support Node)
• SGSN (Serving GPRS Support Node)
• UTRAN
• RNC (Radio Network Controller)
• Node-B (Base Stations)
• UE
• Terminals (3G mobile phones)
• NEW MBMS Element
• BM-SC (Broadcast Multicast Service Center)

15
MBMS Reference Architecture (continued)

• BM-SC Functions
• Content Provider Charging (per transmitted data,
  per QoS, etc)
• MBMS Transport
• Service Parameters (e.g. QoS, MBMS service area)
• Initiate/Terminate bearer resources
• Authorization and Initiation of MBMS services
• MBMS Session Transmissions
• Scheduling
• Delivery
• Service Advertisement and Description

16
MBMS Reference Architecture (continued)

• GGSN Functions
• Service QoS Negotiation
• MBMS Traffic Routing (to appropriate GTP tunnel)
• SGSN Functions
• User Authentication
• Service Usage Authorization
• Service Control Functions for individual users
• Can generate Charging Data per Service for each
  user

17
MBMS Reference Architecture (continued)

• UTRAN Functions
• Delivery of MBMS Data to Designated Service Area
• Support Initiation/Termination of MBMS
  Transmissions by the CN
• Support intra-RNC, inter-RNC mobility of MBMS
  receivers
• Transmission of MBMS announcements
• UE Functions
• Activation/Deactivation of MBMS Data Reception
• Reception of MBMS Data without Explicit User
  Request
• Reception of MBMS Service Announcements while
  Active or Idle
• Support Security Operations

18
Outline

• Introduction
• MBMS Overview
• Service Requirements
• Procedures
• MBMS Reference Architecture
• Potential Services
• Business Models
• Conclusions

19
Potential Services

• Improvement of Existing 2G/3G services
• Real-Time services (e.g. emergency announcements)
• Location-Based services (e.g. multimedia tourist
  information)
• Announcement services (e.g. commercial offers,
  electronic tickets)
• Mobile Broadcast services
• Mobile TV
• Visual Radio (FM with other multimedia services)
• Cross Referencing services (e.g. between Mobile
  TV, Visual Radio)
• Interactive TV/Radio (e.g. voting what to
  see/listen next)

20
Potential Services (continued)

• Multipoint-to-Multipoint services
• Multiparty Visio Conferencing
• Multiplayer Games
• Multiparty Messaging

21
Outline

• Introduction
• MBMS Overview
• Service Requirements
• Procedures
• MBMS Reference Architecture
• Potential Services
• Business Models
• Conclusions

22
Business Models

• Free-to-Air Broadcast
• Advertisements (paid by content providers)
• TV-like services (stimulate subscription to
  charged services)
• Subscription-Based Model
• All kind of subscription services
• Reverse charging model
• Lower Cost Model
• Potential multicast services
• Lower charging due to low traffic and cost

23
Conclusions

• MBMS
• Very Promising Technology
• Decreases Data in Network
• Uses Radio Resources Efficiently
• Offers new Service Categories
• Mobile Broadcast Services
• Multipoint-to-Multipoint Services
• Two modes
• Broadcast (stimulate subscription to other
  services)
• Multicast (subscribed services, generate revenue)

24
References

• Broadcast and Multicast Services in cdma2000 by
  Jun Wang, Ragulan Sinnarajah, Tao Chen, Yongbin
  Wei, and Edward Tiedemann QUALCOMM Incorporated
• Multimedia Broadcast Multicast Service
  Technology Overview and Service Aspects by A.
  Boni, E. Launay, T. Mienville, P. Stuckmann
• MBMS service provision and its challenges by J.
  Ogunbehn and A. Mendjeli Fujitsu Laboratories
  Europe UK
• Specification of Broadcast/Multicast Architecture
  and Protocols, Deliverable D3.1v1, B-Bone by
  Josephine Antoniou, Christophoros Christophorou

25
Thanks for your attention