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LTE QoS: SDF and EPS Bearer QoS (presentation version)
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LTE QoS: SDF and EPS Bearer QoS (presentation version)

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This document will describe LTE QoS at service level and at bearer level. First, the concept of Service Date Flow (SDF) and EPS bearer, traffic flows at these two levels, will be explained, followed by a description of their relationship. Then, it will explain the concept of QoS at each level, and cover different types and characteristics of SDF QoS parameters and EPS bearer QoS parameters. Finally, explanation on how QoS parameters are provisioned to Evolved Packet System (EPS) entities and applied to user traffic, and how they work in UL and DL traffic will be given.

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LTE QoS: SDF and EPS Bearer QoS (presentation version) LTE QoS: SDF and EPS Bearer QoS (presentation version) Presentation Transcript

  • Netmanias Technical Document: LTE QoS - SDF and EPS Bearer QoS www.netmanias.com www.nmcgroups.com About NMC Consulting Group NMC Consulting Group is an advanced and professional network consulting company, specializing in IP network areas (e.g., FTTH, Metro Ethernet and IP/MPLS), service areas (e.g., IPTV, IMS and CDN), and wireless network areas (e.g., Mobile WiMAX, LTE and Wi-Fi) since 2002. Copyright © 2002-2013NMC Consulting Group. All rights reserved. LTE QoS - SDF and EPS Bearer QoS - August 22, 2012 (Last Updated: September 13, 2013) NMC Consulting Group (tech@netmanias.com) www.netmanias.com www.nmcgroups.com
  • Copyright © 2002-2013NMC Consulting Group. All rights reserved. Netmanias Technical Document: LTE QoS - SDF and EPS Bearer QoS 2 SDF vs. EPS Bearer (1/2) PDN PDN Connection (EPS Session) UE IP address APN Default EPS Bearer Dedicated EPS Bearer IP flow 1 IP flow 2 IP flow 3 IP flow 4 IP flow 5 Applications EPS Bearers eNBUE S-GW P-GW SDF1 QoS Policy SDF2 QoS Policy SDF3 QoS Policy SDF4 QoS Policy Filtering (TFT/SDFTemplate) S1 BearerData Radio Bearer S5 BearerE-RAB SDF SDF S5 Bearer EPS Bearer: Concatenation of DRB, S1 Bearer and S5 Bearer EPS Bearer
  • Copyright © 2002-2013NMC Consulting Group. All rights reserved. Netmanias Technical Document: LTE QoS - SDF and EPS Bearer QoS 3 SDF vs. EPS Bearer (2/2) 1, 2: refer to the next page Terms Description PDN Connection • IP connection between UE and PDN (An LTE network identifies a PDN by its APN and assigns a PDN address (IP address) to UE) EPS Session • Used to refer to a PDN Connection • Must have at least one EPS bearer. Remains activated as long as UE stays connected to PDN network EPS Bearer • A Logical transport channel (transmission path) set between UE and P-GW to deliver user traffic (IP packets) with specific QoS • Each EPS Bearer is activated with QoS parameters that indicate the characteristics of the transport channel. • All EPS Bearers belonging to one PDN connection share the same UE IP address. Default Bearer • The first EPS bearer activated when an EPS session (PDN connection) is created. Stays activated until the EPS session is terminated • Always set as Non-GBR type 1 Dedicated Bearer • Additional EPS bearer activated on demand after an EPS session (PDN connection) is created • May be activated on demand • Can be either GBR 2 or Non-GBR type 1 Service Data Flow (SDF) • An IP flow or an aggregation of IP flows of user traffic classified by the service type. Classified by using SDF templates • Different QoS is applied to each SDF. Each SDF is subject to different QoS rules determined by PCRF (See PCC technical document for more information). • Each SDF is delivered through an EPS bearer that can satisfy its QoS. • A SDF that matches the packet filters of a TFT (UL TFT in UE, DL TFT in P-GW) is mapped to an EPS bearer. • Multiple SDFs with the same QCI are mapped and delivered to one EPS bearer. Terms Relating to SDFs and EPS Bearers View slide
  • Copyright © 2002-2013NMC Consulting Group. All rights reserved. Netmanias Technical Document: LTE QoS - SDF and EPS Bearer QoS 4 Default Bearer for PDN 1 QCI ARP GBR (UL/DL) Non-GBR Non-GBR GBR Default Bearer for PDN 2 Non-GBR Non-GBR GBR QCI ARP QCI ARP QCI ARP QCI ARP QCI ARP GBR (UL/DL) MBR (UL/DL) MBR (UL/DL) APN- AMBR (UL/DL) APN- AMBR (UL/DL) UE-AMBR (UL/DL) Dedicated Bearer for PDN 2 Dedicated Bearer for PDN 2 Dedicated Bearer for PDN 1 Dedicated Bearer for PDN 1 SDF 1 SDF 2 SDF 3 SDF 4 SDF 5 SDF 1 SDF 2 SDF 3 SDF 4 SDF 5 Resource Type QoS Parameters of EPS Bearer QoS Parameters of SDF PDN 1 PDN 2 IP Addr 1 IP Addr 2 PDN Connection 1 (EPS Session 1) PDN Connection 2 (EPS Session 2) GBR (UL/DL)MBR (UL/DL)QCI ARP MBR (UL/DL)QCI ARP MBR (UL/DL)QCI ARP MBR (UL/DL)QCI ARP MBR (UL/DL)QCI ARP MBR (UL/DL)QCI ARP MBR (UL/DL)QCI ARP MBR (UL/DL)QCI ARP GBR (UL/DL)MBR (UL/DL)QCI ARP GBR (UL/DL)MBR (UL/DL)QCI ARP P-GW 1 P-GW 2 UE QoS Parameter: SDF vs. EPS Bearer (1/2) SDF QoS Parameter QCI, ARP, GBR, MBR GBR SDF QCI, ARP, GBR(UL/DL), MBR(UL/DL) Non-GBR SDF QCI, ARP, MBR(UL/DL) EPS Bearer QoS Parameter QCI, ARP, GBR, MBR, APN-AMBR, UE-AMBR GBR Bearer QCI, ARP, GBR(UL/DL), MBR(UL/DL) Non-GBR Bearer QCI, ARP, APN-AMBR(UL/DL), UE-AMBR(UL/DL) QoS Parameters (1) GBR vs. Non-GBR GBR SDF/Bearer If dedicated network resources related to a GBR value are permanently allocated at SDF/Bearer establishment/modification. Non-GBR SDF/Bearer Otherwise View slide
  • Copyright © 2002-2013NMC Consulting Group. All rights reserved. Netmanias Technical Document: LTE QoS - SDF and EPS Bearer QoS 5 QoS Parameter: SDF vs. EPS Bearer (2/2) 3: Packet forwarding treatment is solely determined by the other QoS parameters: (i) QCI, GBR and MBR (for SDF) and (ii) QCI, GBR, MBR and AMBR (for EPS Bearer) QoS Parameter Description QCI • Applied to a GBR/Non-GBR SDF/Bearer • Value: Scalar (1 ~ 9) • Standardized QoS characteristics values are defined as QCI = 1 ~ 9 (See 3GPP TS 23.203[3] Table 6.1.7) • QoS characteristics represented by QCI value: (i) Resource Type (GBR or Non-GBR), (ii) Priority (1 ~ 9), (iii) Packet Delay Budget (50ms ~ 300ms), (iv) Packet Error Loss Rate (10-2 ~ 10-6) • Used as a reference to node specific parameters that control packet forwarding treatment - Packet forwarding treatment: e.g. Scheduling weights, admission threshold, queue management thresholds, link layer protocol configuration, etc. • Pre-configured in operators’ network node (e.g. eNB) ARP • Applied to a GBR/Non-GBR SDF/Bearer • ARP Parameters: (i) Priority Level (1 ~ 15 , 1: the highest level), (ii) Pre-emption Capability (yes or no) and (iii) Pre-emption Vulnerability (yes or no) - Priority Level: defines the relative importance of a resource request, with 1 being the highest. - Pre-emption Capability: defines whether a SDF/Bearer can get resources already assigned to another SDF/Bearer with a lower priority level. - Pre-emption Vulnerability: defines whether a SDF/Bearer can lose the resources assigned to it to admit a SDF/Bearer with a higher priority level. • Used for controlling call admission. Once successfully established, ARP has no impact on packet forwarding treatment 3. GBR (UL/DL) • Applied to a GBR SDF/Bearer • Indicates a minimum bandwidth (bit rate) to be guaranteed for the SDF/Bearer MBR (UL/DL) • Applied to a GBR/Non-GBR SDF and GBR Bearer • Indicates a maximum bandwidth (bit rate) allowed for the SDF/Bearer • Any traffic in excess of the specified MBR may get discarded through rate policing APN-AMBR (UL/DL) • Applied only to the aggregated bandwidth of Non-GBR Bearers. • Defined per APN. Indicates a maximum bandwidth (bit rate) allowed for all the non-GBR bearers associated with a PDN connected to a UE UE-AMBR (UL/DL) • Applied only to the aggregated bandwidth of non-GBR bearers • Defined for UE. Indicates a maximum bandwidth (bit rate) allowed for all the non-GBR bearers associated with a UE • Subscription information provide by an HSS (UE-AMBRHSS) Still, can be modified by an MME with the APN-AMBR of all PDNs within a UE to the extent permitted (within a range of values provided by the HSS, UE-AMBRHSS) (UE-AMBR = ∑ APN-AMBR(s) for all PDNs) QoS Parameters (2)
  • Copyright © 2002-2013NMC Consulting Group. All rights reserved. Netmanias Technical Document: LTE QoS - SDF and EPS Bearer QoS 6 1. Provided by HSS 2. Can be modified by PCRF (PCC rule authorization) 1. Provided by PCRF 1. Provided by HSS 2. MME can replace the UE-AMBR with the aggregated APN-AMBR of all APNs (to the extent not exceeding the subscribed value provided by the HSS) QCI ARP UE- AMBR (UL/DL) APN- AMBR (UL) MBR (UL) GBR (UL/DL) MBR (DL) QCI ARP QCI ARP Application APN- AMBR (UL/DL) QCI QCI QCI QCI ARP QCI ARP QCI ARP MBR (UL) GBR (UL/DL) PDN QCI QCI QCI Default Bearer (Non-GBR) Dedicated Bearer (GBR) Dedicated Bearer (Non-GBR) eNBUE S-GW P-GW MBR (UL/DL) MBR (UL/DL) MBR (UL/DL) MBR (UL/DL) MBR (UL/DL) GBR (UL/DL) GBR (UL/DL) QCI QCI QCI QCI QCI ARP ARP ARP ARP ARP QoS Provisioning SDF QoS Parameter EPS Bearer QoS Parameter SDF QoS parameters (QCI, ARP, MBR, GBR) are provisioned by PCRF Default Bearer Provisioned to HSS as a Subscribed Profile (Subscribed QCI, ARP, APN-AMBR and UE-AMBR) Can be modified by PCC rule authorization of PCRF when a EPS session is created Dedicated Bearer Provisioned by PCRF MME can replace the UE-AMBR with the aggregated APN-AMBR of all active APNs (to the extent not exceeding the subscribed value provided by the HSS) QoS Provisioning
  • Copyright © 2002-2013NMC Consulting Group. All rights reserved. Netmanias Technical Document: LTE QoS - SDF and EPS Bearer QoS 7 QoS Enforcement QCI ARP UE- AMBR (UL/DL) APN- AMBR (UL) MBR (UL) GBR (UL/DL) MBR (DL) QCI ARP QCI ARP Application APN- AMBR (UL/DL) QCI QCI QCI QCI ARP QCI ARP QCI ARP MBR (UL) GBR (UL/DL) QCI QCI QCI Default Bearer (Non-GBR) Dedicated Bearer (GBR) Dedicated Bearer (Non-GBR) eNBUE S-GW P-GW MBR (UL/DL) MBR (UL/DL) MBR (UL/DL) MBR (UL/DL) MBR (UL/DL) GBR (UL/DL) GBR (UL/DL) QCI QCI QCI QCI QCI ARP ARP ARP ARP ARP PDN QoS Parameter Enforcement QCI Applied to all SDFs by P-GW ARP Applied to all SDFs by P-GW MBR Applied to all SDFs by P-GW GBR Applied to only GBR SDFs by P-GW QoS Enforcement for SDF QoS Parameter Enforcement QCI Applied to all Bearers by all entities (UE, eNB, S-GW, P-GW) ARP Applied to all Bearers by all entities except UE (eNB, S-GW, P-GW) MBR Applied to only GBR Bearers at all entities - UL: Applied to only non-GBR bearers by UE and eNB - DL: Applied to only non-GBR bearers by S-GW and P-GW GBR Applied to only GBR Bearers at all entities except UE (eNB, S-GW, P-GW) APN-AMBR Applied to only Non-GBR Bearers - UL: Applied to only Non-GBR Bearers by UE and P-GW - DL: Applied to only Non-GBR Bearers by P-GW UE-AMBR Applied to only Non-GBR Bearers by eNB QoS Enforcement for EPS Bearer
  • Copyright © 2002-2013NMC Consulting Group. All rights reserved. Netmanias Technical Document: LTE QoS - SDF and EPS Bearer QoS 8 Example of QoS Operation: Downlink (1/2)Application SDF Templates (DL) MBR (DL) Policing MBR (DL) Policing APN-AMBR (DL) Policing Dedicated Bearer (GBR), Bearer ID=10 Dedicated Bearer (Non-GBR), Bearer ID=8 Default Bearer (Non-GBR), Bearer ID=5 SDF1 SDF2 SDF3 SDF4 PF: Packet Filter GBR Bearer Non- GBR Bearer Non- GBR Bearer UE-AMBR (DL) Scheduling PF1 PF2 PF3 PF4 PF5 SDF=1 SDF=2 SDF=3 SDF=3 SDF=4 EBI=10 EBI=10 EBI=8 EBI=8 EBI=5 SDF Template3 (TFT2) Packet Filter1 Packet Filter2 Packet Filter3 Packet Filter4 Packet Filter5 Filter Rule (*, UE IP, *, *, *) SDF 1(*, UE IP, RTP, *, UDP) (*, UE IP, Video, *, UDP) (*, UE IP, SIP, *, UDP) (*, UE IP, Game, *, *) SDF Bearer 10 Bearer ID SDF 2 SDF 3 SDF 3 SDF 4 Bearer 10 Bearer 8 Bearer 8 Bearer 5 DL TFTs (SDF Templates) in P-GW SDF Template1 (TFT1) SDF Template4 (TFT3) SDF Template2 (TFT1) eNBUE S-GW P-GW IP flow 1 IP flow 2 IP flow 3 IP flow 4 IP flow 5 Bearer ID =10 Bearer ID =8 Bearer ID =5 1234 5 5 6 PDN (Internet) Packet Filter: - Configured by network operator - Referred to 5-tuple (Src IP, Dst IP, Src Port, Dst Port, Protocol ID)
  • Copyright © 2002-2013NMC Consulting Group. All rights reserved. Netmanias Technical Document: LTE QoS - SDF and EPS Bearer QoS 9 Example of QoS Operation: Downlink (2/2) ❶ [P-GW] Downlink IP Flows Arrival  IP Flows arrived at a P-GW from the Internet . ❷ [P-GW] IP Packet Filtering (SDF Templates)  The received IP Flows are filtered through IP Packet Filters (SDF templates) into different SDFs  Filter Rules: 5-tuple (Source IP, Destination IP, Source Port, Destination Port, Protocol ID) ❸ [P-GW] SDF QoS Enforcement: MBR Rate Policing  MBR (DL) rate policing against each SDF: Excess packets are discarded. ❹ [P-GW] SDF – EPS Bearer Mapping: IP Packet Filtering (TFT)  SDFs are filtered through IP packet filters (TFTs) and mapped into EPS Bearers. ❺ [P-GW] EPS Bearer QoS Enforcement: MBR/APN-AMBR Rate Policing  EPS Bearer QoS is applied to each Bearer.  MBR (DL) rate policing against each GBR Bearer (EBI=10): Excess packets are discarded.  APN-AMBR (DL) rate policing against Non-GBR Bearers (EBI=5, EBI=8): Excess packets are discarded.  The sum of MBR (EBI=5) and MBR (EBI=8) is limited by APN-AMBR (DL). ❻ [eNB] SDF QoS Enforcement: UE-AMBR Rate Policing  UE-AMBR (DL) rate policing per Non-GBR Bearer (EBI=5, EBI=8) IP Flow Application IP Plow 1 Voice IP Plow 2 Video Streaming IP Plow 3 IMS Signaling IP Plow 4 Gaming IP Plow 5 Internet Access (Best-Effort) IP Flow SDF IP Plow 1 → PF (SDF Template) SDF 1 (GBR) IP Plow 2 SDF 2 (GBR) IP Plow 3 SDF 3 (Non-GBR) IP Plow 4 SDF 3 (Non-GBR) IP Plow 5 SDF 4 (Non-GBR) SDF EPS Bearer SDF 1(GBR) → PF (TFT) Bearer 10 (GBR Dedicated Bearer) SDF 2 (GBR) Bearer 10 (GBR Dedicated Bearer) SDF 3 (Non-GBR) Bearer 8 (Non-GBR Dedicated Bearer) SDF 4 (Non-GBR) Bearer 5 (Non-GBR Default Bearer) ❶ ❷ ❹
  • Copyright © 2002-2013NMC Consulting Group. All rights reserved. Netmanias Technical Document: LTE QoS - SDF and EPS Bearer QoS 10 Example of QoS Operation: Uplink (1/2) PF: Packet Filter MBR (UL) Policing PF1 PF2 PF3 PF4 PF5 SDF Templates (UL) Non- GBR Bearer Dedicated Bearer (GBR), Bearer ID=10 Dedicated Bearer (Non-GBR), Bearer ID=8 Default Bearer (Non-GBR), Bearer ID=5 APN-AMBR (UL) Policing PF1 PF2 PF3 PF4 PF5 Application MBR (UL) Policing GBR Bearer APN-AMBR (UL) Policing Non- GBR Bearer MBR (UL) Scheduling GBR Bearer UE-AMBR (UL) Scheduling Non- GBR Bearer TFT (UL) EBI=5 EBI=8 EBI=8 EBI=10 EBI=10 SDF Template3 (TFT2) Packet Filter1 Packet Filter2 Packet Filter3 Packet Filter4 Packet Filter5 Filter Rule (UE IP, *, *, *, *) SDF 1(UE IP, *, RTP, *, UDP) (UE IP, *, Video, *, UDP) (UE IP, *, SIP, *, UDP) (UE IP, *, Game, *, *) SDF Bearer 10 Bearer ID Packet Filter: (Src IP, Dst IP, Src Port, Dst Port, Protocol ID) SDF 2 SDF 3 SDF 3 SDF 4 Bearer 10 Bearer 8 Bearer 8 Bearer 5 UL TFTs (SDF Templates) in P-GW SDF Template1 (TFT1) SDF Template4 (TFT3) SDF Template2 (TFT1) TFT2 Packet Filter1 Packet Filter2 Packet Filter3 Packet Filter4 Packet Filter5 Filter Rule (UE IP, *, *, *, *) (UE IP, *, RTP, *, UDP) (UE IP, *, Video, *, UDP) (UE IP, *, SIP, *, UDP) (UE IP, *, Game, *, *) Bearer 10 Bearer ID Packet Filter: (Src IP, Dst IP, Src Port, Dst Port, Protocol ID) Bearer 10 Bearer 8 Bearer 8 Bearer 5 UL TFTs in UE TFT1 TFT3 eNBUE S-GW P-GW IP flow 1 IP flow 2 IP flow 3 IP flow 4 IP flow 5Bearer ID =5 Bearer ID =8 Bearer ID =10 1 2 3 3 4 4 5 6 7 SDF1 SDF2 SDF4 SDF3 8 PDN (Internet)
  • Copyright © 2002-2013NMC Consulting Group. All rights reserved. Netmanias Technical Document: LTE QoS - SDF and EPS Bearer QoS 11 Example of QoS Operation: Uplink (2/2) ❶ [UE] Uplink IP Flows Arrival  IP Flows from user applications arrive at a UE (the same applications as in Downlink case). ❷ [UE] IP Packet Filtering (TFT)  The received IP Flows are filtered through IP Packet Filters (TFT) into EPS Bearers appropriately.  Filter Rules: 5-tuple (Source IP address, Destination IP address, Source Port, Destination Port, Protocol ID) ❸ [UE] EPS Bearer QoS Enforcement: MBR/APN-AMBR Rate Policing  EPS Bearer QoS is applied to each Bearer.  MBR (UL) rate policing against each GBR Bearer (EBI=10)  APN-AMBR (UL) rate policing against Non-GBR Bearers (EBI=5, EBI=8)  The aggregated MBR (EBI=5, EBI=8) is limited by APN-AMBR (UL). ❹ [eNB] EPS Bearer QoS Enforcement: MBR/UE-AMBR Rate Policing  MBR (UL) rate policing against each GBR Bearer (EBI=10)  UE-AMBR (UL) rate policing against Non-GBR Bearers (EBI=5, EBI=8)  The aggregated MBR (EBI=5, EBI=8) is limited by UE-AMBR (UL). ❺ [P-GW] Bearer Traffic Arrival  IP Flows transported through EPS Bearers arrive at a P-GW. ❻ [P-GW] EPS Bearer QoS Enforcement: APN-AMBR Rate Policing  APN-AMBR (UL) rate policing against Non-GBR Bearers (EBI=5, EBI=8): Excess packets are discarded.  The aggregated MBR (EBI=5, EBI=8) is limited by APN-AMBR (UL). ❼ [P-GW] IP Packet Filtering (SDF Templates)  IP Flows are filtered through IP Packet Filters (SDF templates) into different SDFs. ❽ [P-GW] SDF QoS Enforcement: MBR Rate Policing  MBR (UL) rate policing against each SDF: Excess packets are discarded. IP Flow EPS Bearer IP Plow 1 → PF (TFT) Bearer 10 (GBR Dedicated Bearer) IP Plow 2 Bearer 10 (GBR Dedicated Bearer) IP Plow 3 Bearer 8 (Non-GBR Dedicated Bearer) IP Plow 4 Bearer 8 (Non-GBR Dedicated Bearer) IP Plow 5 Bearer 5 (Non-GBR Default Bearer) EPS Bearer IP Flow Bearer 10 IP Flow 1 IP Flow 2 Bearer 8 IP Flow 3 IP Flow 4 Bearer 5 IP Flow 5 IP Flow SDF IP Plow 1 → PF (SDF Template) SDF 1 (GBR) IP Plow 2 SDF 2 (GBR) IP Plow 3 SDF 3 (Non-GBR) IP Plow 4 SDF 3 (Non-GBR) IP Plow 5 SDF 4 (Non-GBR) ❷ ❼ ❺
  • Copyright © 2002-2013NMC Consulting Group. All rights reserved. Netmanias Technical Document: LTE QoS - SDF and EPS Bearer QoS 12 References and Abbreviations [1] Netmanias Technical Document, “LTE Identification III: EPS Bearer Identifier”, August 2013, http://www.netmanias.com/bbs/view.php?id=techdocs&no=60 [2] 3GPP TS 23.203, “Policy and charging control architecture”. [3] NMC Consulting Group Confidential Internal Report, “E2E LTE Network Design”, August 2010. AMBR APN ARP DL DRB EBI eNB EPS E-UTRAN GBR HSS LTE MBR MME : Aggregate Maximum Bit Rate : Access Point Name : Allocation and Retention Priority : Downlink : Data Radio Bearer : EPS Bearer Identity : Evolved Node B : Evolved Packet System : Evolved Universal Terrestrial Radio Access Network : Guaranteed Bit Rate : Home Subscriber Server : Long Term Evolution : Maximum Bit Rate : Mobility Management Entity Abbreviations PCC PCRF PDN PF P-GW QCI QoS SDF S-GW SRB TFT UE UL : Policy and Charging Control : Policy and Charging Rules Function : Packet Data Network : Packet Filter : PDN GW : QoS Class Identifier : Quality of Service : Service Data Flow : Serving GW : Signaling Radio Bearer : Traffic Flow Template : User Equipment : Uplink
  • Copyright © 2002-2013NMC Consulting Group. All rights reserved. 13 Netmanias LTE Technical Documents Index Topic Document title Document presented here 1 Network Architecture LTE Network Architecture: Basic 2 Identification LTE Identification I: UE and ME Identifier 3 LTE Identification II: NE and Location Identifier 4 LTE Identification III: EPS Session/Bearer Identifier 5 Security LTE Security I: LTE Security Concept and LTE Authentication 6 LTE Security II: NAS and AS Security 7 QoS LTE QoS: SDF and EPS Bearer QoS O 8 EMM LTE EMM and ECM States 9 LTE EMM: User Experience based EMM Scenario and Eleven EMM Cases 10 LTE EMM Procedure: 1. Initial Attach (Part 1) – Case of Initial Attach 11 LTE EMM Procedure: 1. Initial Attach (Part 2) – Call Flow of Initial Attach 12 LTE EMM Procedure: 2. Detach 13 LTE EMM Procedure: 3. S1 Release 14 LTE EMM Procedure: 4. Service Request 15 LTE EMM Procedure: 5. Periodic TAU 16 LTE EMM Procedure: 6. Handover without TAU (Part 1) – Overview of LTE Handover 17 LTE EMM Procedure: 6. Handover without TAU (Part 2) – X2 Handover 18 LTE EMM Procedure: 6. Handover without TAU (Part 3) – S1 Handover 19 LTE EMM Procedure: 7. Cell Reselection without TAU 20 LTE EMM Procedure: 8/9. Handover/Cell Reselection with TAU 21 LTE EMM Procedure: 10/11. Toward Another City 22 PCC LTE Policy and Charging Control (PCC) 23 Charging LTE Charging I: Offline 24 LTE Charging II: Online (TBD) 25 IP Address Allocation LTE: IP Address Allocation Schemes I: Basic 26 LTE: IP Address Allocation Schemes II: A Case for Two Cities Visit http://www.netmanias.com to view and download more technical documents.
  • Copyright © 2002-2013NMC Consulting Group. All rights reserved. 14 Carrier WiFi Data Center Migration Wireline Network LTE Mobile Network Mobile WiMAX Carrier Ethernet FTTH Data Center Policy Control/PCRF IPTV/TPS Metro Ethernet MPLS IP Routing 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 eMBMS/Mobile IPTV Services CDN/Mobile CDN Transparent Caching BSS/OSS Cable TPS Voice/Video Quality IMS LTE Backaul Netmanias Research and Consulting Scope Visit http://www.netmanias.com to view and download more technical documents.