Mobile Multimedia and Multimedia Systems Perspectives

1,380 views
1,235 views

Published on

Published in: Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,380
On SlideShare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
50
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide
  • There are a number of challenges and architectural features that have to be met and put in place to provide true seamless mobility across a core IP mobility network. Each of these has been addressed in the Nortel Networks IP Mobility architecture. User identity – can no longer rely on phone numbers, IMSI, MINs, or even IP addresses to uniquely identify and locate a user. IPM adopts the user@realm NAI as specified in the IETF RFCs. Packet routing – as users roam from one network access point to the next, the logical (IP) address of the access point changes. IPM addresses this through the use of specially engineered DHCP, DNS, and router software. Authentication and Authorisation – As users connect at arbitrary access points they need to be identified and authorised in a consistent network wide fashion. IPM uses industry standard Diameter protocols and specially enhanced AAA servers to fulfill this function. Security associations – Each point of interconnect from mobile client to access network, to core network, to edge, to correspondent node, requires its own security association to ensure the appropriate level of protection of packets crossing each interconnect. IPM identifies the appropriate mechanisms for each point. Mobile client functionality – In order for mobile clients to exploit all the features of IPM, appropriate driver level functionality needs to be added. A fully mobile aware client is capable of exploiting NAI level addressability, direct routing of packets to correspondent nodes, and the intelligent selection of access networks where more than one is available. Client level software is important component product of the Nortel Networks IP Mobility solution. Standards Compliance and IP Industry compatibility – In order to successfully integrate with a standards based IP packet network, an IPM architecture needs to exploit protocols and components that are compatible with IETF specifications. The Nortel Networks IPM architecture does this. In order to ensure ongoing acceptance and ability to evolve, an IPM architecture needs to be part of the IETF program. Nortel Networks is most active in the IETF mobility working groups and is one of the most influential contributors to the RFCs related to mobility.
  • Mobile Multimedia and Multimedia Systems Perspectives

    1. 1. Mobile Multimedia and Multimedia Systems Perspectives
    2. 2. Introduction <ul><li>Wireless is moving into broadband: </li></ul><ul><li>- 3G, 4G mobile networks </li></ul><ul><li>- WLAN </li></ul><ul><li>- DVB-H </li></ul><ul><li>- WIMAX </li></ul><ul><li>How to make maximum use of </li></ul><ul><li>these systems? </li></ul>                                         
    3. 3. Technology progress <ul><li>Broadband wireless media technology </li></ul><ul><li>is behind the corner: </li></ul><ul><li>WLAN ONBOARD </li></ul><ul><li>3G ONBOARD </li></ul><ul><li>TV ONBOARD </li></ul><ul><li>ALL INTEGRATED ONBOARD </li></ul>                                         
    4. 4. COMPLEX MEDIA SYSTEMS BEHIND WLAN
    5. 5. Three wireless broadband networks DVB-H WLAN 3G-4G Mobile IEEE 802.11a+b+g DVB-H mobile TV The goal is to investigate system integration and operation                                         
    6. 6. <ul><li>Operator wants efficient resource </li></ul><ul><li>management: transmission </li></ul><ul><li>coverage and cost </li></ul><ul><li>User wants minimized cost of </li></ul><ul><li>access and seamless operation </li></ul><ul><li>Example: User may change to WLAN broadcast in </li></ul><ul><li>the office, DVB-H outdoors and 3G in undergound </li></ul><ul><li>passage seamlessly </li></ul>System reqirements                                         
    7. 7. <ul><li>Seamless changeover (handover) </li></ul><ul><li>between the systems is technical </li></ul><ul><li>challenge </li></ul><ul><li>Heterogenous networks may not </li></ul><ul><li>be synchronised, even content </li></ul><ul><li>stream may not be identical (e.g. </li></ul><ul><li>different compression ratios) </li></ul>Seamless challenge                                         
    8. 8. Gateways and managers <ul><li>The changeover problem can be </li></ul><ul><li>solved by embedding gateways on </li></ul><ul><li>the network side and/or managers </li></ul><ul><li>on the terminal side </li></ul><ul><li>Multisystem terminal for </li></ul><ul><li>3G+WLAN+DVB-H will have severe </li></ul><ul><li>limitations on power consumption </li></ul>                                         
    9. 9. Handover requirements <ul><li>Seamless means perfect stream </li></ul><ul><li>splicing </li></ul><ul><li>This can be done when streams </li></ul><ul><li>are aligned in buffers and </li></ul><ul><li>synchronized </li></ul><ul><li>In general time stamps and bitrates </li></ul><ul><li>may not be identical </li></ul>                                         
    10. 10. Gateways and managers DVB-H WLAN 3G NETWORK GATEWAY TERMINAL MANAGER In case of operator controlled networks gateway ensures synchronization. In heterogenous networks terminal performs synchronization and handover
    11. 11. FUTURE MOBILE SYSTEM <ul><li>IS BROADBAND FOR MULTIMEDIA </li></ul><ul><li>IT SUPPORTS MULTIPLE NETWORK </li></ul><ul><li>TYPES (3G, WLAN, DVB…. </li></ul><ul><li>IT SUPPORTS MULTIPLE OPERATION </li></ul><ul><li>MODES: UNICAST, MULITCAST, </li></ul><ul><li>BROADCAST, MULTISTREAMING </li></ul><ul><li>THE SYSTEM IS IP PROTOCOL BASED ! </li></ul>                                         
    12. 12. MOBILE DATA BANDWIDTH <ul><li>FUTURE MOBILE SYSTEM WILL </li></ul><ul><li>HAVE DATA BANDWIDTH IN </li></ul><ul><li>MEGABITS/SECOND </li></ul><ul><li>3G - 1-10 Mb/s </li></ul><ul><li>4G - 10-50 Mb/s ? </li></ul><ul><li>WLAN - 1- 100 Mb/s </li></ul>                                         
    13. 13. THE FUTURE MOBILE SYSTEM <ul><li>THE FUTURE MOBILE SYSTEM </li></ul><ul><li>ARCHITECTURE IS DEVELOPED </li></ul><ul><li>THE STANDARD IS CALLED IMS </li></ul><ul><li>(Internet Multimedia Subsystem) </li></ul><ul><li>It is developed as an extension of 3G </li></ul><ul><li>mobile standard (release 5,6) by 3GPP ( www.3gpp.org ) and IETF (www.ietf.org) </li></ul>                                         
    14. 14. THE IMS <ul><li>The IMS is based on SIP protocol </li></ul><ul><li>This allows setup of most complex </li></ul><ul><li>multimedia sessions </li></ul>                                         
    15. 15. The IMS basic idea <ul><li>The basic idea of IMS is integration of </li></ul><ul><li>telephone CS (Circuit Switched) network </li></ul><ul><li>and IP network running in wireless systems </li></ul>Radio access in 3G. 4G 3G version In USA                                         
    16. 16. User capabilities in IMS <ul><li>The IMS extends widely the capabilities of </li></ul><ul><li>current systems as regards the usage </li></ul><ul><li>of the system </li></ul><ul><li>User may have two types of addresses: </li></ul><ul><li>phone and Internet </li></ul><ul><li>Users may have multiple identities: work </li></ul><ul><li>and private in same equipment </li></ul><ul><li>Users may have multiple terminals with </li></ul><ul><li>different capabilities </li></ul>                                         
    17. 17. Mobile IP – Short Overview Key aspect of wireless networks is mobility. Mobility is realized in cellular systems based CS but it can be also realized in IP systems. Here we provide short overview of IP mobility. This does not mean it is realized in the IMS. IMS can use standard mobility realized in cellular systems.
    18. 18. Mobile IP Key Principles <ul><li>The Wireless Internet is an IP-centric </li></ul><ul><li>& mobility-enabled network: </li></ul><ul><li>IP addresses are used for all routing within the core network </li></ul><ul><li>IP protocols and technologies are used in the control plane </li></ul><ul><li>The network is functionally equivalent to a traditional cellular network (especially with respect to mobility and roaming) </li></ul>
    19. 19. Mobile IP Key Principles <ul><li>IP Mobility focuses on Layer 3 of the core network: </li></ul><ul><ul><li>Mobility functions are independent of the access technology (2G, 3G, wire line, etc.) and the underlying network transport technology (ATM, Ethernet, etc.) </li></ul></ul><ul><li>Mobility is based on the user, not the terminal: </li></ul><ul><ul><li>Users will have a single subscription in a home network </li></ul></ul><ul><ul><li>Service Level Agreements (SLA’ s) must exist between </li></ul></ul><ul><ul><li>all networks users will roam in </li></ul></ul>
    20. 20. Mobile IP Components <ul><li>Mobile Node (MN): laptop, mobile phone, communicator,..etc </li></ul><ul><li>Home Agent (HA): router of the home network </li></ul><ul><li>Foreign Agent(FA): router of the foreign network </li></ul>
    21. 21. Mobile IP Components (MN) (FA) (HA)
    22. 22. How Mobile IP works <ul><ul><li>Agent Discovery </li></ul></ul><ul><ul><ul><li>Registration </li></ul></ul></ul><ul><ul><ul><ul><li>Routing </li></ul></ul></ul></ul>
    23. 23. Agent Discovery 1- HA’s and FA’s: periodically advertise their presence on their subnets by broadcasting agent advertisements 2-MN Listen: Am I on my home sub net or I am visiting some other subnet? OR 1- MN sends an agent solicitation 2- Any agent on the subnet is forced to send an immediate advertisement
    24. 24. Agent Discovery <ul><li>MN determines that it is connected to an (FA) </li></ul><ul><ul><ul><ul><li>acquires a care of address </li></ul></ul></ul></ul><ul><li>Care of Address: and IP address given to the MN by the </li></ul><ul><li>FA </li></ul><ul><ul><ul><ul><ul><li>(exit point of the tunnel from HA to FA) </li></ul></ul></ul></ul></ul>
    25. 25. Registration <ul><li>MN recieved the care of address: register it with the HA </li></ul><ul><li>HA creats a mobility binding table </li></ul><ul><li>HA advertises reachability to the home IP address of MN </li></ul><ul><li>Example: a device connected to the internet called corresponding </li></ul><ul><li>node (CN) sends a packet to MN, how it will reach MN? </li></ul><ul><li>CN HA FA MN </li></ul><ul><li>power down or go back to home sub net: MN will deregister </li></ul><ul><li>HA reclaims MN through tunnel </li></ul>
    26. 26. IP Mobility:a lower level look Security Associations IPSec SA 1 - between security gateways IPSec SA 2 - between AAA servers IPSec SA 3 - between user/terminal and mobility manager IPSec SA 4 - between user/terminal and correspondent node FA HA IPSec SA 4 IPSec SA 3 IPSec SA 2 IPSec SA 1 Visited Network Home Network User Correspondent Node AAA+ Security Gateway Router Mobility Manager Internet AAA+ Security Gateway Router Mobility Manager
    27. 27. IP Mobility Hand Over AAA+ Router Mobility Manager LSF AAA+ Security Gateway Router Mobility Manager Serving Network Home Network Router Router 1 9 Correspondent Node 4 3 10 Security Gateway AAA+ Router Mobility Manager Visited Network Router Router 7 Security Gateway 2 9a 9 2a 7a 11 5 6 8 DNS Internet
    28. 28. Capabilities Of Mobile IP <ul><li>User identity and Addressability </li></ul><ul><li>Signaling and packet routing </li></ul><ul><li>Authentication and Authorisation </li></ul><ul><li>Security associations </li></ul><ul><li>Mobile client functionality </li></ul><ul><li>IP industry compatibility </li></ul>
    29. 29. How Does It Look like? At home On the road FA HA Internet Backbone Haroon@SubNet1 is at home. Please ensure his data comes here. FA HA Internet Backbone Haroon@SubNet1 is in our CDMA network. Please ensure his data comes here.
    30. 30. At the office In a hotel How Does It Look like? HA Haroon@SubNet1 is in our hotel. Please ensure his data comes here. FA Internet Backbone Why certainly, we have an arrangement with your Network operator. I can register you with free run of the house wireless LAN. Enterprise LAN FA Internet Backbone HA Haroon@SubNet1 is at work. Please ensure his data comes here.
    31. 31. Roaming in IMS Usser can roam in the CS (circuit switched) and IMS in different Combinations (being in CS directed to IMS and opposite)                                         
    32. 32. IMS layrered architecture                                         
    33. 33. Acronyms in the IMS scheme <ul><li>CSCF Call Session Control Function </li></ul><ul><li>PDF Policy Decision Function </li></ul><ul><li>BGCF Breakout Gateway Control Function </li></ul><ul><li>MRFC Mutlimedia Resource Function Controller </li></ul><ul><li>MRFP Multimedia Resource Function Processor </li></ul><ul><li>MGCF Multimedia Gateway Control Function </li></ul><ul><li>MGW Multimedia Gateway Function </li></ul><ul><li>SGW Signalling Gateway </li></ul><ul><li>SEG Security Gateway </li></ul><ul><li>SGSN Serving GPRS Support Node </li></ul><ul><li>GGSN Gateway GPRS Support Node </li></ul><ul><li>IMMGW Internet Multimedia Gateway </li></ul>                                         
    34. 34. HSS – Home Subscriber Server HSS has functions for CS and PS networks: Home Location Register HLR with Authentication Center AUC                                         
    35. 35. Signalling conversion in SGW Protocols from IMS domain (SIP) have to be converted to the CS domain                                         
    36. 36. IMS Architecture RAN – Radio Access Network SLP – Subscription Locator Function UE – User Equipment Some reference points: Gm – connection of UE to IMS (for SIP) Mw – connection between CSCF’s Cx – subscriber and service data Dx – connection to SLF (Sub. Locator Func.                                         
    37. 37. Conclusion IMS is a complicated system satisfying all possible multimedia requirements IMS will coexist with CS system At some point in the future all-IP systems may by used exclusively                                         
    38. 38. MULTIMEDIA SYSTEMS PERSPECTIVES MULTIMEDA SYSTEMS IREK DEFEE
    39. 39. <ul><li>MULTIMEDIA SYSTEMS INTEGRATE </li></ul><ul><li>ALL THE COMPONENTS DESCRIBED </li></ul><ul><li>IN THIS COURSE: </li></ul><ul><li>- SERVERS </li></ul><ul><li>- NETWORKS </li></ul><ul><li>- CLIENTS </li></ul><ul><li>- SOFTWARE </li></ul><ul><li>- CONTENT </li></ul>MULTIMEDA SYSTEMS IREK DEFEE
    40. 40. MULTIMEDA SYSTEMS IREK DEFEE <ul><li>WHAT WILL BE THE FUTURE IN MULTIMEDIA </li></ul><ul><li>SYSTEMS? </li></ul><ul><li>WHAT IS HAPENNING RIGHT NOW IS THAT </li></ul><ul><li>NEW TECHNOLOGIES AND MULTIMEDIA </li></ul><ul><li>SYSTEMS ARE COMING ALL THE TIME, </li></ul><ul><li>ESPECIALLY IN THE MOBILE AREA </li></ul><ul><li>TERMINALS </li></ul><ul><li>NETWORKS </li></ul><ul><li>SOFTWARE </li></ul><ul><li>                                                                    </li></ul>
    41. 41. Historical development MULTIMEDA SYSTEMS IREK DEFEE <ul><li>1610 2160 N-97 I N8 </li></ul><ul><li>From mobile phone to forget-mobile phone? </li></ul>
    42. 42. MULTIMEDA SYSTEMS IREK DEFEE <ul><li>EXAMPLE: MOBILE MEDIA DEVICES </li></ul><ul><li>MOBILE PHONES ARE EVOLVING INTO MEDIA </li></ul><ul><li>DEVICES. THEY MAY CHALLENGE PHOTOGRAPHIC </li></ul><ul><li>CAMERAS, VIDEO CAMCORDERS, PORTABLE MUSIC </li></ul><ul><li>PLAYERS, GAME CONSOLES </li></ul><ul><li>                                                                    </li></ul><ul><li>                                                                    </li></ul>
    43. 43. Heterogenous networking MULTIMEDA SYSTEMS IREK DEFEE <ul><li>From GSM radio network via Bluetooth to… </li></ul><ul><li>WIRELESS BROADBAND or… </li></ul><ul><li>From tens of kilobits to megabits per second </li></ul><ul><li>3G onboard WLAN onboard TV onboard </li></ul><ul><li>ALL onboard </li></ul>
    44. 44. MULTIMEDA SYSTEMS IREK DEFEE <ul><li>SO WE MAY THINK THAT MOST DEVICES </li></ul><ul><li>WILL BE MEDIA DEVICES AND CONNECTED BY </li></ul><ul><li>WIRELESS. </li></ul><ul><li>HOW THIS MAY HAPPEN? IN THE FUTURE </li></ul><ul><li>WE WILL HAVE HUGE RANGE OF APPLICATIONS </li></ul><ul><li>AND SERVICES: </li></ul>
    45. 45. MULTIMEDA SYSTEMS IREK DEFEE <ul><li>WE WILL HAVE VARIETY OF TERMINAL </li></ul><ul><li>DEVICES.... </li></ul>
    46. 46. MULTIMEDA SYSTEMS IREK DEFEE <ul><li>NETWORKING PLATFORMS WILL BE </li></ul><ul><li>INTEGRATING – ONE DEVICE WILL BE </li></ul><ul><li>ABLE TO CONNECT TO DIFFERENT NETWORKS </li></ul>
    47. 47. MULTIMEDA SYSTEMS IREK DEFEE <ul><li>HOWEVER, ALL THESE NETWORKS WILL </li></ul><ul><li>BE BASED ON THE IP PROTOCOL: </li></ul>
    48. 48. MULTIMEDA SYSTEMS IREK DEFEE <ul><li>HERE THE BANDWIDTH GROWS </li></ul><ul><li>HERE WE MOVE TO IP PROTOCOL </li></ul><ul><li>HERE ARE DIFFERENT NETWORK TYPES </li></ul>
    49. 49. From Telephone to Internet <ul><li>Telephone network for speech </li></ul><ul><li>Internet for data and… everything </li></ul>MULTIMEDA SYSTEMS IREK DEFEE <ul><li>IP networking is the future </li></ul><ul><li>WLAN </li></ul>
    50. 50. New data transfer ways <ul><li>From: person-to-person phone call </li></ul><ul><li>To: Data center-to-mass public </li></ul><ul><li>- Broadcast TV </li></ul><ul><li>- Multicast Internet </li></ul>MULTIMEDA SYSTEMS IREK DEFEE <ul><li>3G MBMS WLAN IP Multicast DVB-H Broadcast </li></ul><ul><li>Multimedia </li></ul><ul><li>Broadcast & </li></ul><ul><li>Multicast </li></ul><ul><li>Massive distribution of content will be </li></ul><ul><li>possible rather soon </li></ul>
    51. 51. What is mobile device? MULTIMEDA SYSTEMS IREK DEFEE <ul><li>makeup device? Swiss army knife? </li></ul><ul><li>camera camcorder TV radio game PDA </li></ul>
    52. 52. The Service Case: Mobile IPod MULTIMEDA SYSTEMS IREK DEFEE <ul><li>IPod, Music Web shop </li></ul><ul><li>Portable Mobile Music device </li></ul><ul><li>Music with hard disc </li></ul><ul><li>Player </li></ul><ul><li>Mobile device is an IPod, and phone, </li></ul><ul><li>and much more…. </li></ul>
    53. 53. And the final destination... MULTIMEDA SYSTEMS IREK DEFEE <ul><li>TECHNOLOGY MAY BECOME INVISIBLE </li></ul><ul><li>LONG IN THE FUTURE…. </li></ul>
    54. 54. MULTIMEDA SYSTEMS IREK DEFEE <ul><li>CONCLUSIONS TO THIS COURSE: </li></ul><ul><li>WE WILL SEE HUGE PROGRESS IN MULTIMEDIA </li></ul><ul><li>SYSTEMS IN THE FUTURE. </li></ul><ul><li>SYSTEMS WILL BECOME MUCH MORE COMPLEX </li></ul><ul><li>NETWORKS WILL BE BROADBAND WIRELESS. </li></ul><ul><li>INFORMATION WILL BE DOWNLOADED ONLY </li></ul><ul><li>BY NETWORKS, PHYSICAL CARRIERS (LIKE E.G. </li></ul><ul><li>CD) WILL BE DISAPPEARING. </li></ul>

    ×