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IP Multimedia Subsystem (IMS)

IP Multimedia Subsystem (IMS). Date : 3rd May, 2011 Name : Kim, Hyun-Tae Lee , Jong-Hyun. SEAL Sungkyunkwan Evolutionary Algorithm Lab. CONTENTS. Introduction Architecture Key Features Conclusion. Introduction. The internet. Over 1.9 billion Internet Users.

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IP Multimedia Subsystem (IMS)

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  1. IP Multimedia Subsystem (IMS) • Date : 3rd May, 2011Name : Kim, Hyun-Tae Lee, Jong-Hyun SEAL Sungkyunkwan Evolutionary Algorithm Lab

  2. CONTENTS • Introduction • Architecture • Key Features • Conclusion

  3. Introduction

  4. The internet • Over 1.9 billion Internet Users. 1st generationof the Internet • 28.7% of the world population. • transport of non real time data • services with stringent QoS You are here. Next generationof the Internet • access to personalized interactive • on any device, and anywhere SEAL Sungkyunkwan Evolutionary Algorithm Lab 4

  5. IP Multimedia Subsystem (IMS) The IMS is • a networkfunctional architecture. • to provide a multimedia service delivery upon Internet protocols. interoperability & network convergence SEAL Sungkyunkwan Evolutionary Algorithm Lab 5

  6. Architecture

  7. Three-layered architecture SEAL Sungkyunkwan Evolutionary Algorithm Lab 7

  8. Transport Layer This layer is • comprised routers and switches. • responsible for the abstraction of the actual access networks. • a interaction pointbetween the access layers and the IP network. SEAL Sungkyunkwan Evolutionary Algorithm Lab 8

  9. Control Layer This layer is • consisted mainly of control platforms for managing call, session set-up, modification and release. • to provide capability to interface the service layer with other services. such as provisioning, charging and operation & management. SEAL Sungkyunkwan Evolutionary Algorithm Lab 9

  10. Control Layer cont. The main component of this layer is • the Call Session Control Function (CSCF) which facilities the correct interaction between application servers, media server and HSS. I(Interrogating)-CSCF • The domain’s contact point for inter-domain SIP signaling. S(Serving)-CSCF • Control the user’s SIP session. P(Proxy)-CSCF • The IMS contact point for SIP signaling. • To secure, compress and decompress, ensure the correctness of SIP message SEAL Sungkyunkwan Evolutionary Algorithm Lab 10

  11. Control Layer cont. SEAL Sungkyunkwan Evolutionary Algorithm Lab 11

  12. Service(application) Layer This layer is • where all of the actual services (service platforms, servers) live. • to provide • such as presence, voice over IP, group list management (as SIP application servers) • to give its architecture • the power and flexibility to rapidly deploynew service. 12

  13. Key features

  14. Key features of IMS We will discuss about • Vertical vs. Horizontal Integration Services. • Service enablers • Presence, Group List Management • Service Inter-Operator Relation (Interoperability) SEAL Sungkyunkwan Evolutionary Algorithm Lab 14

  15. Vertical vs. Horizontal Integration Services SEAL Sungkyunkwan Evolutionary Algorithm Lab 15

  16. Vertical vs. Horizontal Integration Servicescont. The vertical integration services is • each service has its unique functionality. • no reuse of service components. • very costly, complex, and difficult to build and maintain. SEAL Sungkyunkwan Evolutionary Algorithm Lab 16

  17. Service enabler The IMS facilitates • creation and delivery of multimedia services based on common enablers in a ‘write once, use many’ way. = Service enabler The service enabler • represents generic & reusablebuilding blocks for service creation. • developed for successful applications can become ‘global enablers’ which are automatically included in new apps and service. SEAL Sungkyunkwan Evolutionary Algorithm Lab 17

  18. Service enabler - Presence The presence enabler is • to allow a set of users to be informed about the availability and means of communication of other users • enables a paradigm shift in P2P and other communication. SEAL Sungkyunkwan Evolutionary Algorithm Lab 18

  19. Service enabler – Group List Management The group list management enabler is • to allow a set of users to create and managenetwork-based group definitions for use. The application examples for group management include: buddy list block list private / publicgroup SEAL Sungkyunkwan Evolutionary Algorithm Lab 19

  20. Service inter-Operator Relation The IMS is • to be able the reuse of inter-operator relations. • to establish and buildupon for each service. IMS enables operator relations Non-IMS interconnect relations SEAL Sungkyunkwan Evolutionary Algorithm Lab 20

  21. Benefits of IMS For operators • They can provide the basis of a horizontal architecture. • Also, they can reuseof service enablers and common functions for offering multiple applications. For users • They can use variety services: • P2C(person-to-content), P2P(person-to-person) communication for voice, text, image and video content and their hybrid. SEAL Sungkyunkwan Evolutionary Algorithm Lab 21

  22. Conclusion

  23. Conclusion The IP Multimedia Subsystem(IMS) isa generic standard architecture for offeringIP multimedia services and also VoIP. The power of IMS comes from • open network interfaces and platforms. • horizontal architecture.= transport and control layerseffectively disassociate the services • generic and reusable.= service enablers (e.g., presence, group list management) As IMS-based SP networks continue to be designed and deployed, it will completely revolutionize the way we interact with our digital world. 23

  24. Question ?

  25. Thank You for your attention !!

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