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Using Network Intelligence for LTE

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Using Network Intelligence for LTE

Using Network Intelligence for LTE

Jay Klein, CTO, Allot

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  • Allot PCEF (TDF0 supports the ADC rules in this case I assume. The interface between TDF and PCRF is Gx or Sd? If it is Gx, is it extended Gx (rel. 11) or rel. 8 Gx is sufficient to enable ADC rules on TDF?
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Using Network Intelligence for LTE Using Network Intelligence for LTE Presentation Transcript

  • Using Network Intelligence for LTE Jay Klein, CTO1 May 18, 2011 May 18, 2011
  • What Makes Them Different?2 May 18, 2011
  • Agenda The Extra Capacity Illusion Inheriting Fixed Access ISP Problems Shifting from Mobile Broadband to Mobile Internet Over-the-top Challenges 3GPP & The Introduction of Standalone PCEF/TDF Use Cases Examples3 May 18, 2011
  • The Bit Rate Race: The Rise of Broadband4 May 18, 2011
  • Assisted by Technology Evolution (Compression)5 May 18, 2011
  • Mobile is Catching Up with LTE & HSPA+ Source: Qualcomm6 May 18, 2011
  • Mobile Ops as ISPs: LTE Sector Throughput Source: Motorola7 May 18, 2011
  • Fixed Access evolution continues - DOCSIS 3.0 Channel configuration Downstream throughput Number of Number of Upstreamdownstream upstream DOCSIS EuroDOCSIS throughput channels channels 4 4 171.52 (152) 222.48 (200) 122.88 (108) 8 4 343.04 (304) 444.96 (400) 122.88 (108)(*) Raw (Net) Speeds in Mbps8 May 18, 2011
  • Wanna be an ISP? Face Their Problems Capacity upgrades, Traffic Optimization International Peering Subscriber behavior, Bandwidth Hogging Tiering, Personalization User Experience Enhancements9 May 18, 2011
  • Greater Challenges with Mobile Operators No time to adapt to the internet era - expectations are for identical services/apps Challenges due to Mobility Control Plane & No. of Connections New congestion scenarios: cell level or backhaul Device variety invites complex policy control scenarios as mitigating plan misuse10 May 18, 2011
  • Start Shifting Away from “Bit Thinking” Typically, a mobile operator perspective ● What was the session’s min/max bit rate? ● What were the jitter statistics? ● What was the error rate/packet drop?11 May 18, 2011
  • To “Service/App Delivery Thinking” Typically, an end-user perspective ● Did my YouTube clip stutter? ● Was the Skype call voice quality good? ● Facebook is “stuck”12 May 18, 2011
  • Naïve Perception of Services: VoIP IMS Core Internet user Network13 May 18, 2011
  • Real Life: Meet Over-The-Top VoIP IMS Core Internet user Network14 May 18, 2011
  • Insignificant? Check your numbers again Source: Morgan Stanley “ The Mobile Internet Report” 12/09 Subscribers (Millions ) T-Mobile Telenor America Movil China Telecom Telefonica Moviles / O2 Vodafone China Mobile Skype! 0 200 400 60015 May 18, 2011
  • Leaving it Unmanaged Has a Price No Traffic Shaping No Quota Wrong Price Model16 May 18, 2011
  • Problem Starts with MisinterpretingThe True Value of Bits & Bytes 1 MB of SMSs = 500 Euro ● Math: 1 SMS = 100 bytes = 5 cents of revenue 1 MB of a voice call = 1 Euro ● Math: 1 minute = 100 KB = 10 cents of revenue Estimated costs to deliver : ● 1.5 cents per MB (HSPA) ● 0.5 cents per MB (LTE) 17 May 18, 2011
  • Math: Hidden Use Cases = Revenue Loss Service Typical MB per OTT Cost to Hidden length Minute Revenue Deliver, Use Case (min) (Euro) LTE (Euro) VoIP OTT 0.15 to VoIP Control 3 1 0.015 1.50 Web “YouTube” Video Clip 4 5 1.50 0.05 Included Plan TV Revenue 30 8 3.00 1 .00 Episode Sharing Source of all evil - Dumb quota (MB), all bytes are equal Any service (content) is enabled or accessible by default18 May 18, 2011
  • How did 3GPP intend to Solve the Problem?Introducing PCRF & PCEF Sp Online Charging System (OCS) Subscription Profile AF Repository (SPR) Service Data Flow Based Rx Credit Control Policy and Charging Rules Function (PCRF) Gx Gxx Gy BBERF PCEF Offline Gz Charging System GGSN PDN GW (OFCS) PGW 19 May 18, 2011
  • Can GGSN-PCEF Handle Internet Traffic? Service Data Flow Detection by Filtering ● by IP address, port range or mask Policy Enforcement ● Applying specific QoS parameters per bearer Flow Based Charging Functionalities ● Volume and/or duration measurements per flow20 May 18, 2011
  • Can GGSN-PCEF Handle Internet Traffic? Service Data Flow Detection by Filtering ● Most apps/services cannot be detected by filtering Policy Enforcement ● Applying specific QoS parameters per bearer Flow Based Charging Functionalities ● Volume and/or duration measurements per flow21 May 18, 2011
  • Can GGSN-PCEF Handle Internet Traffic? Service Data Flow Detection by Filtering ● Most apps/services cannot be detected by filtering Policy Enforcement ● Most apps/services change behavior when shaped Flow Based Charging Functionalities ● Volume and/or duration measurements per flow22 May 18, 2011
  • Can GGSN-PCEF Handle Internet Traffic? Service Data Flow Detection by Filtering ● Most apps/services cannot be detected by filtering Policy Enforcement ● Most apps/services change behavior when shaped Flow Based Charging Functionalities ● Missed detection + mediocre enforcement = Erroneous reporting, non-enforceable pricing plans23 May 18, 2011
  • Allot Drives 3GPP SA2 Standardization Offline Online Charging Charging PCRF Rx System System AF Gz Gy Gx Gx & Sd Core PS Gn GGSN or Gi TDF Internet PGWRAN Allot = Over-Top-PCEF (TDF) 24 May 18, 2011
  • Standalone PCEF by Allot:Optimize, Monetize, Personalize25 May 18, 2011
  • Acknowledging the Advantages of Standalone PCEF Superior OTT application awareness Enhanced traffic enforcement capabilities with overall network congestion analysis perspective High performance, scalable, zero core load Integration of internet related services (including chaining) 26 May 18, 2011
  • Acknowledging the Advantages of Standalone PCEF Fixed & Mobile Network convergence ready Easy rollout, doesn’t require day-1 core upgrade Core Infrastructure vendor independent Standards (e.g., 3GPP) Future proof (TDF) 27 May 18, 2011
  • Visibility – 1st step to Control Your DestinyApplication AwarenessSubscriber AwarenessServices AwarenessNetwork TopologyAwareness Discover what services are using most of the bandwidth A quick way to identify who is using most of the bandwidth Ability to identify new usage trends Ability to identify new usage trends A clear picture of service plan quota usage Detailed information over a selected time-range Identify busy cells and get details on the protocols breakdown 28 May 18, 2011
  • Cell Awareness Use Case Discover Topology • Get Cell database from external source Associate subscribers to cells Detect Congestion • Detect cells/radios reaching congestion state Enforce Modified Service Plan • Discover heavy users and temporarily modify their service plans • Optimize media delivery by intelligent Steering29 May 18, 2011
  • Allot’s Mobile Trends Report:Application Breakdown Busy Cell Sites 30 May 18, 2011
  • Video Optimization: Buffering (Slow Download) If V >> D (slow download speed TTV = TTD (1-D/V) compared to viewing rate) then TTV=TTD (no real-time streaming possible) Small TTV possible if D very TTD (Time To Download) close to VVolume (MB) If D=V (download rate the same Download Rate (D) as viewing rate) then no buffering needed TTV=0 Stream Rate (V) Time (Sec) Buffering Delay (TTV) 31 31 May 18, 2011
  • Video Optimization: Buffering (Fast Download) User can download the whole TTD (Time To Download) clip before even viewing itVolume (MB) Download Rate (D) completely Waste of bandwidth if skipped Stream Rate (V) Time (Sec) 32 32 May 18, 2011
  • Video Optimization: Buffering (Step-by-Step) Content is downloaded Idle Buffering according to viewing paceVolume (MB) If viewing is interrupted then download overhead is minimized Download Rate (D) Stream Rate (V) Time (Sec) 33 33 May 18, 2011
  • Use Case Example: OTT VoIP Block/Prioritize •PCRF is integrated in the backoffice systems (OSS, BSS, Billing) •PCRF can “change” dynamically the service plans for a given customer, based on multiple events •PCRF, still through backoffice, can also trigger events / notifications (Send SMS alert to customer) •Messages between PCRF and PCEF are standardized, therefore deployable in a multi-vendor environment.334 May 18, 2011 May 18, 2011
  • Key Takeaways Good News: LTE transforms Mobile Operators into ISPs Bad News: They inherit all ISP Problems with no grace period Even worse News: Greater challenges with Mobile Networks Operators must change their way of thinking: ● It’s Mobile Internet and not Mobile Broadband ● It’s Apps and not Bits ● It’s QoE and not QoS OTT cannot be ignored and has a significant impact on network operational costs and revenue potential38 May 18, 2011
  • Key Takeaways – cont. Current GGSN/PGW architectures are ineffective of matching present and future internet service realities 3GPP has enhanced the network capabilities by adding dedicated network component to handle OTT internet applications & services With standalone PCEF no Network core performance and functionality compromises need to be made LTE roll out mainly provides RAN capacity enhancements yet this only emphasizes the need for smart policy control, enforcement and charging solutions39 May 18, 2011
  • Allot Communications a mind for networks Jay Klein | VP & CTO jklein@allot.com40 May 18, 2011