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Current MBB Market trends

Current MBB Market trends. CAS Concepts. Current MBB Market trends. Table of contents. Introduction CAS integration into a DTV system Elemental concepts in a CAS system CAS & DTV Products. Current MBB Market trends. Table of contents. Introduction

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Current MBB Market trends

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  1. Current MBB Market trends CAS Concepts

  2. Current MBB Market trends Table of contents • Introduction • CAS integrationinto a DTV system • Elemental concepts in a CAS system • CAS & DTV Products

  3. Current MBB Market trends Table of contents • Introduction • CAS integrationinto a DTV system • Elemental concepts in a CAS system • CAS & DTV Products

  4. Introduction

  5. TRANSPORT STREAM MPEG2 Sources Audio/video Audio/Video Encription MPEG2 ECM MUX Conditional Access System CAS ECM Access EMM EMM PSI Rights OK Comandos SMS NO rights Subscriver Management System SMS CONDITIONAL ACCESS Introduction

  6. Introduction • A general description A Conditional Access Systemisanencryption / decryptionmanagementmethod (securitysystem) wherethebroadcastercontrolsthesubscriber'saccessto digital TV services.  This can ensurethatthepersoniswho he/shesays he/sheis (authenticity). Italsoofferssecurity in purchase and othertransactions

  7. Introduction • A deeperdescription A Conditional Access System (CAS) comprises a combination of scrambling and encryptiontopreventunauthorizedreception. Scramblingistheprocess of renderingthesound, pictures and data unintelligible. Encryptionistheprocess of protectingthesecretkeysthathavetobetransmittedwiththescrambledsignal in orderforthedescramblertowork. Afterdescrambling, anydefectsonthesound and picturesshouldbe imperceptible, i.e.the CA systemshouldbetransparent.

  8. Introduction • Content Protectionneccesity Revenues protection Generate conficende to Content Owners

  9. Current MBB Market trends Table of contents • Introduction • CAS integrationinto a DTV system • Elemental concepts in a CAS system • CAS & DTV Products

  10. TRANSPORT STREAM MPEG2 Sources Audio/video Audio/Video Encription MPEG2 ECM MUX Conditional Access System CAS ECM Access EMM EMM PSI Rights OK Comandos SMS NO rights Subscriver Management System SMS CONDITIONAL ACCESS CAS integrationinto a DTV system

  11. CAS integrationinto a DTV system Interfaces in a CAS system

  12. CAS integrationinto a DTV system CAS - Schedule provider interface

  13. CAS integrationinto a DTV system CAS - Schedule provider interface

  14. CAS integrationinto a DTV system CAS - Subscriber Management System interface

  15. CAS integrationinto a DTV system CAS – 3rd party data spooler interface

  16. CAS integrationinto a DTV system CAS - Muxtiplexer interface

  17. CAS integrationinto a DTV system CAS - Return interface

  18. Current MBB Market trends Table of contents • Introduction • CAS integrationinto a DTV system • Elemental concepts in a CAS system • CAS & DTV Products

  19. TRANSPORT STREAM MPEG2 Sources Audio/video Audio/Video Encription MPEG2 ECM MUX Conditional Access System CAS ECM Access EMM EMM PSI Rights OK Comandos SMS NO rights Subscriver Management System SMS CONDITIONAL ACCESS Elemental concepts in a CAS system

  20. Elemental concepts in a CAS system ECM – Entitlement Control Message TheEntitlement Control Message (ECM) streamisplayed in paralleltothescrambled audio/video stream. Itisusedto control theaccess of thesubscribertothecurrentlybroadcastevent and todescramblethe audio/video stream. (No ECM isgeneratedforanunscrambledbroadcast).

  21. Elemental concepts in a CAS system ECM – Entitlement Control Message • Access Conditions • The ECM carriestheaccessconditions of thecurrentlybroadcastevent. • Theaccessconditions are builtonthebasis of theschedule and product (entitlements) data stored in the CAS: • Product data: Theaccessconditions describe alltheproductscontainingtheeventorthecorrespondingchannel. • Schedule data: eventorchannelblackoutzones • Control Word (CW) • The ECM carriesthe Control Word (CW) necessarytodescramblethe audio/video stream. The CW isencryptedwithinthe ECM. Thisparameterchangeseverycryptoperiod.

  22. Elemental concepts in a CAS system ECM – Simulcrypt Nowadays, normallytheprotocolSimulcrypt (V2) isusedbetweentheMux and the ECM Generator

  23. Elemental concepts in a CAS system ECM – Simulcrypt • Simulcrypt v.2: ETSI TS103 197 (since 2000) • ECMG acts as a server • The CW isgeneratedbythe SCS (Mux) and senttothedifferentECMGs

  24. Elemental concepts in a CAS system EMM – Entitlement Management Message Thefunction of theEntitlement Management Messages (EMM) istosendcommandstothesmartcard in ordertomanagethe data stored in thesmartcarddatabase. In particular, theEMMscarrytheentitlementsthatgrantaccesstotheproductsthesubscriber has bought. TheEMMs are alsousedforotherapplicationssuch as delete/modifyentitlement, set credit, clean_upmemory, etc. Itisnot a persistentstream. The EMM is a standardformat of message. Insidethe EMM, each CAS providerputsitsownpropietarycommands.

  25. Elemental concepts in a CAS system EMM – AddressingModes • Normally, differentAddressingModes are usedwhensendingEMMstothesmartcards. Dependingonthetype of command, theaddressingmodecouldbeforexample: • Uniqueaddressing: The EMM issenttoonesmartcardonly • Sharedaddressing: The EMM issentto a givengrouporrange of smartcards • Globaladdressing: The EMM issenttoallsmartcards in thesystem

  26. Elemental concepts in a CAS system EMM – AddressingModes • Theobject of theAddressingModesis: • Toavoidincreasingtoomuchthebandwith of theEMMs • Toavoidrepeatingthesamecommands

  27. Elemental concepts in a CAS system EMM – Broadcasting TheEMMs are alwaysplayedoutin a loop, accordingtothebroadcastingprofileassignedtoeach EMM. Thepurposeistooptimizebandwith and response time for a predefinedavailable BW.

  28. Elemental concepts in a CAS system SmartCard & Set Top Box

  29. Elemental concepts in a CAS system SmartCard & Set Top Box • SmartCard • Decryptthe ECM and compare theprofile (accessconditions) withtherightsstored in theSmartCard • Givethe control word ONLY IF theuser has therightprofile • Set Top Box • Withthe Control Word (receivedfromthe SC) decryptsthe Audio and Video signals

  30. Current MBB Market trends Table of contents • Introduction • CAS integrationinto a DTV system • Elemental concepts in a CAS system • CAS & DTV Products

  31. CAS & DTV Products Productsdefinition • In Digital TV: • Events • Services • In Digital TV with a CAS system: • Events • + Access Control PRODUCTS • Services • Restricted Access (onlysubscribershaveanaccess)

  32. CAS & DTV Products Productsdefinition  With a CAS, eachproduct has toget a relativeaccessright.  Thataccessrightmustbesenttothesubscriber (actuallyhis/hersmartcard) whopurchasedrelativeproduct

  33. CAS & DTV Products Productsdefinition • Theproductmanagementcouldbesplitinto: • PRODUCT CREATION • PRODUCT SALE As creation and sale are notperformed by the same system, they need to exchange created products so there is an in-between step

  34. CAS & DTV Products Productsdefinition Basedonexistingservices and events, aproductisanevent (or complete servicewhichiscomposed of a series of events) which has anaccessprofile. In relationtotheaccessprofile, anaccessrightiscreated Actually,a subscriberbuysanaccessrightrelatedtoaneventor a service

  35. CAS & DTV Products Productsdefinition Product To define a product….. • Price • Contents • Information • Validity Dates

  36. CAS & DTV Products But, beforecreatinganyproduct, manyprevioussteps are mandatory in the CAS….. • Topologydefinition (SERVICES) • Schedule import (EVENTS) • Access profile set up (ACCESS RIGHTS) • Then, PRODUCTS can becreated and finally….. Importedand soldin the SMS • Selling a productsmeansthatthe SMS askstothe CAS tosendthespecificright (relatedtotheproducts of concern) tothesubscriber.

  37. CAS & DTV Products • ProductTypes • SubscriptionProducts(oneor more services) • Single EventProducts/ EventPackageProducts • ComplexProducts(A la carte, Season ticket, pay per night, pay per time.....)

  38. CAS & DTV Products Access Modes • UNSCRAMBLED(free to air) • only a decoderisrequired (no SC, ni rights) • FREE ACCESS • initializeddecoder and SC are required (no rights) • SCRAMBLED • initializeddecoder and SC are required as well as rights (storedintothe SC)

  39. …and that’sall Thankyou!

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