Usługi głosowe w sieciach LTE. Marcin Aronowski Cisco Systems
|
|
- Domenic Sparks
- 8 years ago
- Views:
Transcription
1 Usługi głosowe w sieciach LTE Marcin Aronowski Cisco Systems
2 O czym dzisiaj postaram sie opowiadać? VoLTE - introduction Circuit Switch Fallback Architecture, Policy and Charging APN, Bearers and PDNs for VoLTE/VoHSPA Roaming Emergency Calls * I dużo TTS-ów, CzTS-ów, generalnie xts-ów ;)
3 LTE system architecture 3
4 4
5 VoLTE 5
6 GSMA and Voice Standardization The Need For a Common Implementation Roaming Diverse Handsets Worldwide coverage, Billions of Subs GSMA has driven GSM standardization and is now defining VoLTE for voice evolution Single Implementation reduces complexity, promote scales and enables roaming Voice service shall look the same in any network, with any device VoLTE based on a subset of 3GPP specifications for IMS
7 VoLTE Timing Few VoLTE commercial networks launched in 2012 Metro PCS, SK Telecom, LG U+ VoLTE devices starting to be available in the market Samsung, LG, Sony,.. VoHSPA defined by GSMA after VoLTE Will it be deployed??? CSFB VoLTE CS Voice & SMS
8 VoLTE/VoHSPA Standards Map Driven by GSMA, based on 3GPP Specs for IMS, RAN & CN IR.92 (VoLTE): IMS Profile for Voice and SMS over LTE IR.58 (VoHSPA): IMS Profile for Voice over HSPA IR.94: IMS Profile for Conversational Video Service IR.64: IMS Service Centralization and Continuity IR.65: IMS Roaming IMS Call Flows and Architecture: TS , TS , etc. 3GPP MMTel Suppl. Services: TS and many others IMS Emergency: TS EPC and GPRS Core: TS , TS , etc. Policy anbd Charging: , , , etc. SRVCC and Service Continuity: TS , TS , etc. IR.88 LTE Roaming
9 The VoHSPA Business Case Today s 3G/UMTS networks use CS for voice and HSPA for data CS voice is not efficient, operators need to reduce CS bandwidth to use it for PS 2 possible evolutions to deliver voice over HSPA, both require less bandwidth than legacy CS HSPA Radio RNC CSoHS (CS over HSPA) MSC CS Network Minor changes on UE and RNC Still CS based VoHSPA HSPA Radio RNC SGSN EPC IMS/VoIP, requires IMS like VoLTE Same VoLTE/VoHSPA experience IMS Requires seamless PS-HO HSPAó LTE
10 Radio bearer management VoLTE VoHSPA VoLTE/VoHSPA Network Scenario Several elements, different requirements Mobility Mgnt. LTE HSPA MME SGSN S-PGW PCRF EPS Bearer & QoS Mngnt Device CS CS Iwk (SRVCC) GERAN / UTRAN (CS) MSC HSS VoLTE/VoHSPA Subscription IMS Service Control & Continuity IMS based VoIP (or video) call over LTE or HSPA radio access PCRF controlled QoS Service continuity over CS when out of LTE/HSPA coverage
11 IMS system and UE s IMS client (not addressed in this ppt) APN, bearers and PDN interworking So What Is Required? On the UEs and All Network Elements IMS APN, P-CSCF discovery, dedicated bearers and NRSPC, etc. Policy and Charging PCRF interaction via Gx/Rx, CDR in EPC and IMS Emergency Call Handling Specific QoS, user authentication, user localization Service continuity with CS network Mid call HO and SRVCC Roaming support LBO for voice as in CS CSFB co-existence
12 Circuit Switched Fallback 12
13 Na#ve CSFB Reference Architecture
14 Circuit Switched Fallback Delivery of SMS to EPC Attached Subscriber UTRAN / GERAN IuCS / A MSC 1 Incoming SMS SGs 2 SMS is delivered via SGs interface MME S6a HSS S1-MME S11 CSFB UE E-UTRAN S1-U Serving/ PDN GW During EPC attach, CSFB UE s are also attached over SGs to MSC MME maintains mapping of TA to LA to determine appropriate MSC to establish SGs association with SMS can be delivered/sent without FallBack to legacy radio (SGs interface includes SMS payload capability)
15 Circuit Switched Fallback Delivery of Terminating Voice Session to EPC Attached Subscriber 4 UE Responds to paging incoming call terminated via standard 2G/3G procedures UTRAN / IuCS / A CSFB UE GERAN MSC 1 Incoming Call delivered to VMSC which has SGs association for this subscriber SGs 2 UE is paged via the SGs interface 3 UE retunes to 2G/3G RAT on receipt of page MME S6a HSS S1-MME S11 CSFB UE E-UTRAN SGs interface is used to inform UE of incoming call SGs Paging triggers UE to retune to 2G or 3G legacy network Page Response sent via the legacy radio network Call terminates to UE normally S1-U Serving/ PDN GW
16 CSFB Deployment Challenges CSFB was initially seen as the easy interim approach As further analysis of CSFB was performed, the identified challenges mounted Some of the major challenges/difficulties facing CSFB rollout are: Legacy network dependencies Continued legacy network spend/investment Fallback latency / post-dial delay Ongoing operational complexity (TA/LA mapping)
17 TA to LA Mapping Implementation Challenges Most network operates deploying LTE already have both 2G and 3G networks Mapping process has to take into account When UE falling back, is it likely to go to 2G or 3G overlapping cells? Where cell boundaries between 4G and 2G (or 3G) do not perfectly align, which is provisioned? As cells breathe, boundaries become less predictable 4G networks will be growing rapidly in near-term requires constant tweaking of provisioning tables? 4G TA s 3G LA s 2G LA s
18 UE MME MSC HLR Dependencies for CSFB As Specified by TS UE must support CSFB procedures as defined with TS Must support SGs interface Must support MSC/VLR selection procedures Must support SGs interface (legacy MSC s will require addition of IP interface cards) Should support Roaming Retry procedure to minimise call drops Should support Roaming Retry procedure to minimise call drops
19 Architecture, Policy and Charging 19
20 IMS Policy and Charging Architecture * IMS functions related to PCC: P-CSCF (Rx), S-CSCF (ISC, Rf), MRFC/AS (Ro, Rf) IMS App UE SIP/SDP Rx IMS* PCRF Gx ISC Rf Gy IMS-GWF Ro OCS Bx Billing System Access IP-CAN PCEF Ga/Gz/Rf CGF Bx Voice charging controlled on the IMS side (numbering/in aware) Charging can still be enabled on EPC, e.g. for revenue assurance PCRF required for QoS control and for EPC ó IMS coordination
21 APN, Bearers and PDN Connectivity 21
22 VoLTE Bearers Based on GSMA IR.92 and IR.94 Gx PCRF IMS (SIP) Client APN IMS EPC PGW Default bearer, QCI=5 (SIP Signaling) Dedicated Bearer, QCI=1 (Voice) Dedicated Bearer, QCI=2 (Video) Dedicated IMS APN shall be used for VoLTE and the UE should not provide the IMS APN during initial attach (SIP) (RTP) Typical IMS Application Servers (AS): - TAS/MMTel Telephony AS (VoIP) - IP SM GW (SMS) - IM-SSF (IN interwork) P-CSCF Either sent by the HSS as default APN (typical case) or sent by the UE later for UE requested additional PDN Rx IMS MP/MGW AS Default bearer always active for SIP signaling, dedicated bearers established only for the duration of the voice/video call PCRF initiated Dedicated Bearers activation based on P-CSCF request initiated by the, following a request from the P-CSCF (Rx)
23 APN IMS, the same as VoLTE IMS (SIP) Client VoHSPA PDP Contexts Based on GSMA IR.58 and IR.94 EPC Gn-SGSN and S4-SGSN allowed PGW Primary/Secondary PDP on Gn, EPS bearers on S4 Primary PDP for SIP Signaling Primary PDP, Interactive, THP=1 NRSPC, Conversational, Source Stat.Desc=speech NRSPC, Conv./Stream./Interact PDP context with Interactive Traffic Class (TC) and Traffic Handling Priority (THP) = 1. The UE sets the Signaling Indication in the QoS IE The S4SGSN can map the GMM QoS from EPS-Subscription (TS Ann.E) Secondary PDP (NRSPC) for media Voice PDP: Conversational TC and Source Statistic Descriptor set to Speech Video PDP: Conversational, Streaming or Interactive TC based on policies Gx (SIP) Gm (RTP) PCRF Rx P-CSCF IMS IMS-AGW
24 The UE does not provide the APN Attach and IMS Registration Example of High Level Call Flow (Normal Case) Subscriber profile with the IMS APN downloaded fron the HSS PCRF UE MME/ SGSN HSS SGW/ PGW CSCF Attach Req. Auth & UL Default Bearer/Primary PDP Setup for the APN IMS The PGW provides P-CSCF address(es) transferred as PCO Attach Accept Contains and the indication of IMS Voice over PS support in the network APN IMS Default Bearer, QCI=5 Optional UE Requested Additional PDN Conn. IMS (SIP) Registration New PDN connection, e.g. for APN Internet
25 IMS Media Session Setup Dedicated Bearers Activation UE PCEF PCRF P-CSCF Dedicated Bearer Establishment MO or MT leg for the UE RAR QCI(=1 for voice), GBR, MBR, Flow Info, Event-Trigger,.. RAA CCR-U Event-Trigger=SUCCESSFUL_... CCA-U The P-CSCF needs to know if the bearer is allocated AAR Session-Id, ICID, UE sip, Media-Component-Description, Specific-Action, AAA RAR Specific-Action=INDICATION_OF.. RAA Specific-Action = INDICATION_OF_SUCCESSFUL_RESOURCES_ALLOCATION Event-Trigger = SUCCESSFUL_RESOURCE_ALLOCATION INVITE SDP
26 IMS Media Session Termination Dedicated Bearers Deactivation UE PCEF PCRF P-CSCF Dedicated Bearer Deactivation RAR Charging-Rule-Remove RAA STR Session-Id, Destination-Host, Termination-Cause STA Result-Code BYE The AVP Charging-Rule-Remove causes the removal of installed rules and consequently the release of the dedicated bearer setup for the session (call) STA may happen before or after RAR
27 The P-CSCF must be always in the same network of the PGW P-CSCF Discovery The PGW can provide the P-CSCF address(es) to the UE during initial attach, as part of the PCO IE Multiple addresses for load balancing and resiliencies P-CSCF failure detection a) The UE detect the failure (SIP Register fails) and use another address Pro: Simple, no impact on the network Cons: After initial registration the UE will detect the failure only at registration refresh b) The PGW could check the status of the P-CSCF (TS clause 13a.2.2) Pro: Faster failure detection Cons: Massive re-attach/re-registration when loaded P-CSFCF fails. Also additional traffic in the network for P-CSCF check (e.g. snmp polling)
28 IP Addressing IR92 requires the UE and the network to support both IPv4 & IPv6 The VoLTE device should request PDN Type IPv4v6 IPv6 only is normally used, the IMS APN provides access to the IMS only, isolated network Perfect case for v6-only, IPv6 pool for the Gm LAN Note: IPv6 increases the overhead on SIP/RTP (large header): ROHC is requested by IR.92 on the wireless link UE-eNB
29 VoLTE Roaming 29
30 VoLTE Roaming like CS-Voice Roaming Same Principles Are Generally Applied Routing of media for Voice over LTE (VoLTE) when call originator is Roaming should be at least as optimal as that of current Circuit-Switch (CS) Domain HPLMN CS Core Subscription management UE VPLMN CS Core Voice call Any CS Network CS Voice Roaming Voice Call routed by the VPLMN Call control via HPLMN CS (HLR/IN) VoLTE Roaming Voice RTP routed via IMS in the VPLMN Signaling/call control via IMS in HPLMN
31 VoLTE Roaming Normal Case IMS in VPLMN & HPLMN + VoLTE Roaming Agreement Subscriber X s profile ODB-VPLMN-APN=0 [IMS APN] VPLMN-Dyn-Addr-Allowed=1 HSS TAS S-CSCF PLMN B (H-PLMN) Subscriber X of PLMN B VoLTE UE MME Local Policy PLMN B > IMS VoPS=1 MME PGW SGW PDN Connection for IMS APN IMS APN P-CSCF IMS-AGw PLMN A (V-PLMN) The HSS in the HPLMN provides the IMS APN set as default APN and VPLMN- Dynamic-Address-Allowed = 1 The HSS shall set this only for VPLMNs with VoLTE roaming agreement! The MME can also notify the HLR/HSS of IMS VoPS support The MME in the VPLMN uses the local PGW which serves the IMS APN through the local P-CSCF for roamers and home subs The APN used for XCAP must be routed to the HPLMN
32 PS Roaming Without VoLTE Roaming IMS in VPLMN &HPLMN but PS Data Roaming only Subscriber X s profile ODB-VPLMN-APN=0 [IMS APN] VPLMN-Dyn-Addr-Allowed=0 Subscriber X of PLMN B VoLTE UE MME HSS SGW PGW PDN Connection for IMS APN IMS APN MME Local Policy PLMN B >> IMS VoPS=0 P-CSCF IMS-AGw PGW IMS APN PLMN B (H-PLMN) PLMN A (V-PLMN) The HSS in the HPLMN provides the IMS APN with VPLMN-Dynamic-Address- Allowed = 0 The HSS shall set this only for VPLMNs with VoLTE roaming agreement The MME in the VPLMN selects the PGW in the HPLMN for IMS APN, but set the IMS Voice over PS as not supported The UE receiving IMS VoPS not supported in the Attach Accept can use the IMS PDN connection for other IMS services (e.g. RCS) but not for voice
33 Emergency Calls 33
34 IMS Emergency Call Can be co-located GMLC Lg/SLg MME Emergency APN SGSN PGW Default Emergency bearer Dedicated Emergency bearer EPC Dedicated APN and Bearer/PDP Context for Emergency Call (SIP) Gm (RTP) LRF MI E-CSCF P-CSCF IMS SBC/MGW The APN is not part of the subscription, it is defined by the local PLMN No standard name for the APN, sos suggested by GSMA IR.88 PCRF may not be used to speed-up the call (local QoS settings in MME/SGSN) Emergency Calls can be accepted also for un-authenticated or SIM-less UE (local policy settings) User s location required to route the national emergency number
35 Location Service for Emergency Calls MME SGSN EPC Lg/SLg GMLC Location Retrieve INVITE 112 E- INVITE PSAP # CSCF The emergency number (e.g. 112, 911) must be translated to the number of the local Public-Safety Answering Point (PSAP) IMS LRF PSAP # retrieve PSAP # = f(112, ULI) The LRF (Location Resource Function) maps the UE s location (e.g. cell-id) to PSAP. It can be part of the GMLC, LCS Architecture via GMLC as defined in 3GPP TS Network Induced Location Request (NI-LR): In case of emergency call, the MME sends the user location to the GMLC Alternatively, the LRF could trigger Mobile Terminates Location Req. (MT-LR) via the GMLC to retrieve the location from the MME. But this may take too long time
36 CSFB for Emergency Calls As CSFB is generally available before VoLTE, some operators are considering the options to use CSFB for emergency calls Avoid to implement LCS mechanisms for PSAP mapping GSMA and 3GPP include the possibility to try the emergency call in CS or PS domain and retry in the other domain if it fails GSMA IR.92 Annex A.5, 3GPP TS clause 7.3 Using a different access domain only for emergency requires a careful setup in the network.. It may not be easy either If the IMS emergency call is rejected, the UE may retry in another RAT. But this is like deregistering from LTE/IMS and reattach on CS è long call setup If the UE is both CS and PS/VoLTE attached, a proper routing is required in the CS network to route incoming calls via IMS and the IMS shall reject the emergency call to force rerouting to CS
37 CS Service Continuity 37
38 IMS (SIP) Client CS voice VoLTE VoHSPA CS Mobility During Active IMS Call PS-HO SRVCC LTE HSPA (PS) GERAN / UTRAN (CS) MME SGSN MSC Sv SCC= Service Centralization & Continuity S/PGW IMS SCC AS LTE ó HSPA PS Handover is required to maintain the IMS/VoIP call over LTE and HSPA access (bearer update) IMS based Service Continuity over CS (SRVCC) is required for mid-call HO from LTE/ HSPA to GERAN/UTRAN CS Multiple options defined in the standards 3GPP TS , TS , TR GSMA IR.64
39 UE E-UTRAN /HSPA SRVCC High Level Call Flow 3GPP TS MME/ GERAN SGSN MSC IMS UTRAN (SCC-AS) Active VoIP/IMS Session over LTE access Measurement HO Required (2G/3G Target,..) Initiate SRVCC For voice (STN-SR) Bearer splitting Voice ó QCI 1 Optional PS-PS HO for non-srvcc bearers CS HO Preparation Session Transfer (STN-SR) HO Cmd Coordinate SRVCC & PS-HO Responses SRVCC Response Update Remote End STN-SR= Session Transfer Number for SRVCC, defined in the subscriber profile in HSS Optional PS bearer (non-ims) Voice over CS
40 IMS, CSFB & Domain Selection 40
41 RAT Selection for Multimode UE Which RAN is selected? Core Network The LTE/EPC network may support one or more among: SMSover SGs CSFB IMS/VoLTE GERAN Multimode UE: GSM/GPRS, UMTS, LTE UTRAN E-UTRAN Voice Preference options in the UE CS Only PS Only CS Preferred, IMS secondary IMS Preferred, CS secondary The preferred shall be set in the UE and notified to the Network VoLTE UE = IMS Preferred, CS secondary
42 VoLTE related info between UE/RAN/CN Initial cell selection Attach/TAU Request (NAS) E-UTRAN Voice : - CS Only preference - PS Only - CS Preferred, IMS secondary - IMS Preferred, CS secondary Usage Setting: - Voice Centric - Data Centric UE Attach Accept (NAS)/Initial Context Req. (S1-AP) EPS Network - IMS Voice Over PS support Feature Support: - Emergency Call support Additional Update - SMS-Only Feature Support: - CSFB Not Preferred - No indication RRC Reconfiguration RAT priorities (SIB) Cell re-selection enb RFSP RFSP Index Index NAS S1 MME
43 RAT/Frequency Selection Priority Index From 3GPP TS UE UE s voice preferences and usage settings Local policy RFSP decision HSS Camping priorities enb (modified) RFSP index MME Subscribed RFSP Index The EPC may set the RFSP Index to influence camping priorities Multiple options depending on device capabilities Example use case: enforce 2G/3G camping for voice-centric UE if the supported voice technology is not available in the network Ref. TS (Rel-9), Clause and Standard RFSP Id values for GERAN/UTRAN/E-UTRAN priorities defined in TS Annex I
44 Final UE Decision Reselection Config Voice/Data Centric Voice Pref GERAN Network Capabilities (CSFB/IMS) UE CSFB/IMS selection logic (Annex A TS ) UTRAN E-UTRAN The UE selects to camp on 2G/3G or LTE considering: Network capabilities(support of CSFB and/or IMS in the CN) UE preferences (voice/data centric, IMS/CSFB preference) Decision tree for each case from TS Annex A Try preferred voice option, then less preferred. If voice support not available, decide to stay on LTE (data centric) or 2G/3G (voice centric)
45 VoLTE is starting to take off Not clear if VoHSPA will ever be adopted GSMA defines a subset of IMS functions for a global and uniform VoLTE implementations Minor variants are possible for VoLTE design and should be clarified with each operator
Voice over LTE Telephony on the National Public Safety Broadband Network
Voice over LTE Telephony on the National Public Safety Broadband Network Brian Kassa Head of Technology June 5 th, 2013 1 Nokia Siemens Networks Agenda VoLTE Overview What is VoLTE VoLTE for FirstNet 2
More informationVoice over IP over LTE (VoLTE) Impacts on LTE access. EFORT http://www.efort.com
1 Introduction Voice over IP over LTE (VoLTE) Impacts on LTE access EFORT http://www.efort.com IMS (IP Multimedia Subsystems) has been around for some time, and many infrastructure vendors have invested
More informationSERVICE CONTINUITY. Ensuring voice service
SERVICE CONTINUITY FOR TODAY S Voice over LTE SUBSCRIBERS Ensuring voice service with Single Radio Voice Call Continuity (SR-VCC) TECHNOLOGY White Paper Subscribers expectations for mobile data services
More informationSingle Radio Voice Call Continuity. (SRVCC) with LTE. White Paper. Overview. By: Shwetha Vittal, Lead Engineer CONTENTS
White Paper Single Radio Voice Call Continuity (SRVCC) with LTE By: Shwetha Vittal, Lead Engineer Overview Long Term Evolution (LTE) is heralded as the next big thing for mobile networks. It brings in
More informationDelivery of Voice and Text Messages over LTE
Delivery of Voice and Text Messages over LTE 1. The Market for Voice and SMS! 2. Third Party Voice over IP! 3. The IP Multimedia Subsystem! 4. Circuit Switched Fallback! 5. VoLGA LTE was designed as a
More informationDiameter in the Evolved Packet Core
Diameter in the Evolved Packet Core A Whitepaper November 2009 Page 2 DIAMETER in the Evolved Packet Core Mobile broadband is becoming a reality, as the Internet generation grows accustomed to having broadband
More informationEvolution of the 3GPP Network Architecture, (the Evolved Packet Core)
Evolution of the 3GPP Network Architecture, (the Evolved Packet Core) Dr. Sungho Choi Vice Chairman of 3GPP TSG SA 1 Peak Data Rate (bps) DL/UL Air Interface Technology Evolution OFDMA 300M/75M Rel. 8
More informationLTE Overview October 6, 2011
LTE Overview October 6, 2011 Robert Barringer Enterprise Architect AT&T Proprietary (Internal Use Only) Not for use or disclosure outside the AT&T companies except under written agreement LTE Long Term
More informationLTE service area. 3G service area. EPS : Evolved Packet System. Currently Planning & Coordination Office 1 C *
VoLTE esrvcc VSRVCC Inter-domain Handover Technologies in LTE for Voice (VoLTE) and TV Phone A data communication service called Xi (Crossy) has started in LTE. In the future, voice and TV phone services
More informationPerformance Analysis and Deployment of VoLTE Mechanisms over 3GPP LTE-based Networks
International Journal of Computer Science and Telecommunications [Volume 4, Issue 10, October 2013] 1 ISSN 2047-3338 Performance Analysis and Deployment of VoLTE Mechanisms over 3GPP LTE-based Networks
More informationIP Multimedia System: general aspects and migration perspectives
IMS TPC EPC IP Multimedia System: general aspects and migration perspectives Dr. Leo Lehmann Federal Office of Communication, Switzerland ITU Workshop on Developments regarding telecommunication network
More informationSingle Radio Voice Call Continuity (SRVCC) Testing Using Spirent CS8 Interactive Tester
Application Note Single Radio Voice Call Continuity (SRVCC) Testing Using Spirent CS8 Interactive Tester September 2013 Rev. A 09/13 Single Radio Voice Call Continuity (SRVCC) Testing Using Spirent CS8
More informationVoice and SMS in LTE White Paper
Voice and SMS in LTE White Paper This white paper summarizes the technology options for supporting voice and short message service (SMS) in LTE, including circuit switched fallback (CSFB), SMS over SGs,
More informationSAE and Evolved Packet Core
SAE and Evolved Packet Core Farooq Bari Seattle Communications (COM-19) Society Chapter Nov. 13, 2008 1 SAE/EPS Background Around 2005, 3GPP RAN groups initiated the LTE work and in parallel the SAE work
More informationCS Fallback Function for Combined LTE and 3G Circuit Switched Services
EPC Voice over Circuit Switched Services Special Articles on SAE Standardization Technology CS Fallback Function for Combined and Circuit Switched Services The PP, an international standardization body
More informationPriority, Pre-Emption, and Quality of Service
Priority, Pre-Emption, and Quality of Service http://www.pscr.gov Public Safety Communications Research Program Department of Commerce Boulder Labs Presentation by: Tracy McElvaney Electronics Engineer
More informationLTE CDMA Interworking
LTE CDMA Interworking ehrpd - Use of a Common Core and a Stepping Stone to LTE Mike Dolan Consulting Member of Technical Staff Alcatel-Lucent Overview ehrpd (evolved High Rate Packet Data*) ehrpd involves
More informationVoice Quality with VoLTE
Matthias Schulist Akos Kezdy Qualcomm Technologies, Inc. Voice Quality with VoLTE 20. ITG Tagung Mobilkommunikation 2015 Qualcomm Engineering Services Support of Network Operators Strong R&D Base End-to-end
More information3GPP System Architecture Evolution. ATIS LTE Conference January 26, 2009. 3GPP TSG SA Chairman Stephen Hayes
3GPP System Architecture Evolution ATIS LTE Conference January 26, 2009 3GPP TSG SA Chairman Stephen Hayes 1 3GPP Directions FASTER Faster Data rates Decreased Latency High Cell Edge Throughput Spectrum
More informationOverview of the Evolved packet core network
UNIVERSITY OF ALBERTA Overview of the Evolved packet core network Project report submitted to the Faculty of graduate studies and research University of Alberta In partial fulfillment of the requirements
More informationProtocol Signaling Procedures in LTE
White Paper Protocol Signaling Procedures in LTE By: V. Srinivasa Rao, Senior Architect & Rambabu Gajula, Lead Engineer Overview The exploding growth of the internet and associated services has fueled
More informationLong-Term Evolution. Mobile Telecommunications Networks WMNet Lab
Long-Term Evolution Mobile Telecommunications Networks WMNet Lab Background Long-Term Evolution Define a new packet-only wideband radio with flat architecture as part of 3GPP radio technology family 2004:
More informationVoice over LTE: The new mobile voice Inspire new conversations while streamlining networks
Voice over LTE: The new mobile voice Inspire new conversations while streamlining networks Strategic White Paper 4G LTE enables mobile operators to deliver a new conversation experience of enriched voice,
More information3GPP Long Term Evolution: Architecture, Protocols and Interfaces
3GPP Long Term Evolution: Architecture, Protocols and Interfaces Aderemi A. Atayero, Matthew K. Luka, Martha K. Orya, Juliet O. Iruemi Department of Electrical & Information Engineering Covenant University,
More informationTechnical white paper. Enabling mobile broadband growth Evolved Packet Core
Technical white paper Enabling mobile broadband growth Evolved Packet Core Contents 3 Enabling mobile broadband growth 4 Enabling migration from current networks to LTE 4 Terminology 5 The demand for cost-effective
More informationUpcoming Enhancements to LTE: R9 R10 R11!
Upcoming Enhancements to LTE: R9 R10 R11! Jayant Kulkarni Award Solutions jayant@awardsolutions.com Award Solutions Dallas-based wireless training and consulting company Privately held company founded
More informationWHITE PAPER. Authoritative Guide to Advanced LTE Testing
WHITE PAPER Authoritative Guide to Advanced LTE Testing 26601 Agoura Road, Calabasas, CA 91302 Tel: 818.871.1800 Fax: 818.871.1805 www.ixiacom.com 915-3102-01 Rev. A, August 2013 2 Table of Contents Introduction...
More informationIntroduction to Evolved Packet Core
S T R A T E G I C W H I T E P A P E R Introduction to Evolved Packet Core This white paper provides a brief introduction to Evolved Packet Core a new mobile core for LTE. Herein, key concepts and functional
More informationOverview of GSMA VoLTE Profile. minimum required functions [3]. 2. Background
GSMA Overview of GSMA Profile It was agreed in the GSMA in February 2010 that voice services over LTE () shall use the platform standardized by the 3GPP with a view to maximizing international interoperability.
More informationContents. Continuity of services and mobility
July 2013 Contents Summary... 3 Introduction... 3 1 Framework technologies: LTE/EPC and IMS... 4 1.1 LTE/EPC... 4 1.2 ANDSF - Access network discovery and selection function... 5 3.1.1 MME - Mobility Management
More informationMobile IPv6 deployment opportunities in next generation 3GPP networks. I. Guardini E. Demaria M. La Monaca
Mobile IPv6 deployment opportunities in next generation 3GPP networks I. Guardini E. Demaria M. La Monaca Overview of SAE/LTE Terminology SAE (System Architecture Evolution): core network/system aspects
More information3GPP Femtocells: Architecture and Protocols. by Gavin Horn
3GPP Femtocells: Architecture and Protocols by Gavin Horn QUALCOMM Incorporated 5775 Morehouse Drive San Diego, CA 92121-1714 U.S.A. 3GPP Femtocells: Architecture and Protocols September 2010-2 - Contents
More informationLTE Attach and Default Bearer Setup Messaging
LTE Attach and Default Bearer Setup Messaging 2012 Inc. All Rights Reserved LTE Attach Message Sequence Chart enodeb MME SGW HSS Initial UE Message Update Location Update Location Answer Create Session
More informationKamakshi Sridhar, PhD Distinguished Member of Technical Staff Director Wireless CTO organization
Introduction to Evolved Packet Core (EPC): EPC Elements, protocols and procedures Kamakshi Sridhar, PhD Distinguished Member of Technical Staff Director Wireless CTO organization August 2012 Agenda 1.
More informationCircuit-switched fallback. White Paper
Circuit-switched fallback. White Paper In collaboration with: Qualcomm Circuit-switched fallback. The first phase of voice evolution for mobile LTE devices. 1 LTE Growth and Challenges The 3GPP Long Term
More informationVoLTE with SRVCC: White Paper October 2012
VoLTE with SRVCC: White Paper October 2012 Qualcomm VoLTE with SRVCC: The second phase of voice evolution for mobile LTE devices LTE Growth The 3GPP Long Term Evolution (LTE) high-speed, highcapacity data
More informationEvolutionary Trends towards Beyond 3G Mobile Networks
Evolutionary Trends towards Beyond 3G Mobile Networks Cornel Pampu, Cornelia Kappler, Morten Schläger / SN MN PG NT MN 4 November 17th, 2006 The new company Nokia Siemens Networks is expected to start
More informationThe Voice Evolution VoLTE, VoHSPA+, WCDMA+ and Quality Evolution. April 2012
The Voice Evolution VoLTE, VoHSPA+, WCDMA+ and Quality Evolution April 2012 Qualcomm is a Leader in Wireless 2012 2013 2014 2015+ Rel-8 Rel-9 LTE (FDD&TDD Commercial) Rel-10 Rel-11 & Beyond LTE Advanced
More informationAdvanced SIP Series: SIP and 3GPP Operations
Advanced S Series: S and 3GPP Operations, Award Solutions, Inc Abstract The Session Initiation Protocol has been chosen by the 3GPP for establishing multimedia sessions in UMTS Release 5 (R5) networks.
More informationNTT DOCOMO Technical Journal. Core Network Infrastructure and Congestion Control Technology for M2M Communications
M2M 3GPP Standardization Further Development of LTE/LTE-Advanced LTE Release 10/11 Standardization Trends Core Network Infrastructure and Congestion Control Technology for M2M Communications The number
More informationApplying Software Defined Networks and Virtualization Concepts for Next Generation Mobile Broadband Networks
BROADBAND UKRAINE: 12th June 2013, Kiev, Ukraine FOKUS Center for Next Generation Network Infrastructures (NGNI) Applying Software Defined Networks and Virtualization Concepts for Next Generation Mobile
More information3GPP TS 23.167 V9.4.0 (2010-03)
TS 23.167 V9.4.0 (2010-03) Technical Specification 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; IP Multimedia Subsystem (IMS) emergency sessions (Release
More informationHow to deal with a thousand nodes: M2M communication over cellular networks. A. Maeder NEC Laboratories Europe andreas.maeder@neclab.
How to deal with a thousand nodes: M2M communication over cellular networks A. Maeder NEC Laboratories Europe andreas.maeder@neclab.eu Outline Introduction to M2M communications The M2M use case landscape
More informationDOES YOUR PCRF HAVE WHAT IT TAKES TO SUPPORT VOLTE?
DOES YOUR PCRF HAVE WHAT IT TAKES TO SUPPORT VOLTE? DOES YOUR PCRF HAVE WHAT IT TAKES TO SUPPORT VOLTE? 2 Table of Contents EXECUTIVE SUMMARY...3 INTRODUCTION...3 WHAT S SPECIAL ABOUT VOLTE TRAFFIC?...4
More informationETSI TS 129 118 V11.8.0 (2013-10)
TS 129 118 V11.8.0 (2013-10) Technical Specification Universal Mobile Telecommunications System (UMTS); LTE; Mobility Management Entity (MME) - Visitor Location Register (VLR) SGs interface specification
More informationPerformance Estimation of a SIP based Push-to-Talk Service for 3G Networks
Performance Estimation of a SIP based Push-to-Talk Service for 3G Networks Eoin O Regan and Dirk Pesch Adaptive Wireless Systems Group Cork Institute of Technology Ireland Abstract Push-To-Talk (PTT) is
More informationETSI TS 123 401 V10.5.0 (2011-10)
TS 123 401 V10.5.0 (2011-10) Technical Specification LTE; General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access (3GPP TS 23.401 version
More informationHow Voice Calls Affect Data in Operational LTE Networks
How Voice Calls Affect Data in Operational LTE Networks Guan-Hua Tu*, Chunyi Peng+, Hongyi Wang*, Chi-Yu Li*, Songwu Lu* *University of California, Los Angeles, US +Ohio State University, Columbus, US
More informationSOLUTIONS FOR ROAMING AND INTEROPERABILITY PROBLEMS BETWEEN LTE AND 2G OR 3G NETWORKS
Review of the Air Force Academy No 2 (24) 2013 SOLUTIONS FOR ROAMING AND INTEROPERABILITY PROBLEMS BETWEEN LTE AND 2G OR 3G NETWORKS Radu CURPEN, Florin SANDU, Cosmin COSTACHE, Gabriel Mihail DANCIU Transilvania
More informationRoaming in LTE and Voice Over LTE
Roaming in LTE and Voice Over LTE Dan Warren, Director of Technology, GSMA How to make an ecosystem 840 Networks in 192 countries 5,800,000,000,000 call minutes annually Tomi Ahonen Consulting Economies
More informationAdvanced SIP Series: SIP and 3GPP
Advanced SIP Series: SIP and 3GPP, Award Solutions, Inc Abstract The Session Initiation Protocol has been selected as the main signaling protocol of the Third Generation Partnership Projects IP Multimedia
More information3GPP TS 23.207 V9.0.0 (2009-12)
TS 23.207 V9.0.0 (2009-12) Technical Specification 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; End-to-end Quality of Service (QoS) concept and architecture
More informationThe LTE Network Architecture
S T R A T E G I C W H I T E P A P E R The LTE Network Architecture A comprehensive tutorial Long Term Evolution (LTE) is the latest buzzword on everyone s lips, but are you as conversant with the LTE architecture
More informationExecutive Summary... 4. Introduction... 5. Introduction to VoLTE and RCS... 5. Evolution of Communications Services Enabled by VoLTE and RCS...
[Type text] TABLE OF CONTENTS Executive Summary... 4 Introduction... 5 Introduction to VoLTE and RCS... 5 Evolution of Communications Services Enabled by VoLTE and RCS... 5 Standards Evolution... 6 Overview...
More informationof the existing VoLTE roaming and interconnection architecture. This article compares existing circuit-switched models with the earlier
VoLTE 3GPP Roaming Further Development of LTE/LTE-Advanced LTE Release 10/11 Standardization Trends VoLTE Roaming and ion Standard Technology In 3GPP Release 11, the VoLTE roaming and interconnection architecture
More informationIntroduction of LTE Technology in GSM-UMTS Networks. LTE and 2G-3G Interworking Functions
Introduction of LTE Technology in GSM-UMTS Networks LTE and 2G-3G Interworking Functions TABLE OF CONTENTS SCOPE... 4 1 INTRODUCTION... 5 2 OPERATOR STRATEGIES FOR AN LTE DEPLOYMENT... 7 2.1 DATA-ONLY
More informationWanderlust: Enabling roaming in the LTE era. Don Troshynski Vice President, Solutions Architecture
Wanderlust: Enabling roaming in the LTE era Don Troshynski Vice President, Solutions Architecture Acme Packet Trusted, first-class services and applications Apps & services Session delivery network April
More informationPerformance validation for the mobile core
October 2015 Performance validation for the mobile core Are you ready for Terabits of Traffic? EPC and virtualization, the impact on performance validation Performance validation for the mobile core 1
More informationETSI TS 123 221 V8.3.0 (2009-01) Technical Specification
TS 123 221 V8.3.0 (2009-01) Technical Specification Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Architectural requirements (3GPP TS 23.221
More informationArchitecture Overview NCHU CSE LTE - 1
Architecture Overview NCHU CSE LTE - 1 System Architecture Evolution (SAE) Packet core networks are also evolving to the flat System Architecture Evolution (SAE) architecture. This new architecture optimizes
More informationImplementing LTE International Data Roaming
Implementing International Data Roaming Data Roaming Standardization Implementing International Data Roaming On completion of EPC standardization at 3GPP, specifications for international roaming between
More informationArchitectural Overview of IP Multimedia Subsystem -IMS
Architectural Overview of IP Multimedia Subsystem -IMS Presented by: Masood Khosroshahy June 2006 B E G I N N I N G 1 Project supervisor: Prof. Elie Najm Simplified view of the layered architecture in
More informationNationwide Interoperability Framework
Nationwide Interoperability Framework Emergency Response Interoperability Center (ERIC) Public Safety Homeland Security Bureau Federal Communications Commission PSCR, Boulder, CO Dec 2, 2010 7/9/101 1
More informationSecurity Testing 4G (LTE) Networks 44con 6th September 2012 Martyn Ruks & Nils
Security Testing 4G (LTE) Networks 44con 6th September 2012 Martyn Ruks & Nils 11/09/2012 1 Today s Talk Intro to 4G (LTE) Networks Technical Details Attacks and Testing Defences Conclusions 11/09/2012
More informationINTELLIGENT NETWORK SERVICES MIGRATION MORE VALUE FOR THE
INTELLIGENT NETWORK SERVICES MIGRATION MORE VALUE FOR THE Voice over LTE SUBSCRIBER TECHNOLOGY White Paper Mobile operators have invested a lot of time and money in Intelligent Network (IN) services for
More informationContents. Preface. Acknowledgement. About the Author. Part I UMTS Networks
Contents Preface Acknowledgement About the Author Acronyms xv xxi xxiii xxv Part I UMTS Networks 1 Introduction 3 1.1 Mobile Telecommunication Networks and Computer Networks 4 1.2 Network Design Principles
More informationLeader in Converged IP Testing. Wireless Network Testing
Leader in Converged IP Testing Wireless Network Testing 915-2623-01 Rev A January, 2010 2 Contents The Progression of Wireless Technologies...4 Wireless Testing Requirements...7 LTE Testing...8 Evolved
More informationPractical Security Testing for LTE Networks BlackHat Abu Dhabi December 2012 Martyn Ruks & Nils
Practical Security Testing for LTE Networks BlackHat Abu Dhabi December 2012 Martyn Ruks & Nils 06/11/2012 1 Today s Talk Intro to LTE Networks Technical Details Attacks and Testing Defences Conclusions
More informationMitel Mobility. VoLTE-VoWifi Introduction. Guillaume WIDMER Sr. Presales Engineer Guillaume.widmer@mitel.com +971 55 374 3729/ +33 6 37 78 2536
Welcome স ব গত Mitel Mobility VoLTE-VoWifi Introduction Guillaume WIDMER Sr. Presales Engineer Guillaume.widmer@mitel.com +971 55 374 3729/ +33 6 37 78 2536 Agenda - Company presentation - LTE Market overview
More informationApproaching these challenges with the right tools and solutions is critical for mobile operators success on the evolution to LTE.
A Smart Approach To Signalling Challenges On The Road To LTE Flavio Muscetra, Senior Product Manager Executive Summary Over the past few years we have witnessed a radical shift in the way customers use
More informationLTE X2 Handover Messaging
LTE X2 Handover Messaging 2013 Inc. All Rights Reserved LTE X2 Handover Sequence Diagram UE Target enodeb Source enodeb MME SGW Handover Confirm X2AP Handover Request X2AP Handover Request Acknowledge
More informationVoice over LTE: Challenges and Opportunities
Voice over LTE: Challenges and Opportunities An Industry Whitepaper Contents Executive Summary... 1 Introduction to Voice over LTE... 2 The Benefits of VoLTE... 2 Requirements of a VoLTE-Capable PCRF...
More informationETSI TS 123 251 V6.5.0 (2005-09)
TS 123 251 V6.5.0 (2005-09) Technical Specification Universal Mobile Telecommunications System (UMTS); Network sharing; Architecture and functional description (3GPP TS 23.251 version 6.5.0 Release 6)
More informationPublic Safety Communications Research. LTE Demonstration Network Test Plan. Phase 3 Part 1: Network Interoperability & Drive Test. Version 2.
Public Safety Communications Research LTE Demonstration Network Test Plan Phase 3 Part 1: Network Interoperability & Drive Test Version 2.4 May 7, 2013 1 1 Contents 2 List of Tables... 5 3 List of Figures...
More informationVoice Over LTE VoLTE. esting FTTx Networks 1. Motivations for Enabling Voice over LTE. Featuring PONs. Systems sdfsdf TABLE OF CONTENTS
Whitepaper Voice Over LTE VoLTE TABLE OF CONTENTS esting FTTx Networks 1. Motivations for Enabling Voice over LTE Featuring PONs 2. Requirements for Voice over LTE 3. LTE Voice Options 4. Overview of GSMA
More informationVoLTE or VoIP over LTE Who Is the Ultimate Winner?
VoLTE or VoIP over LTE Who Is the Ultimate Winner? IEEE Santa Clara Valley Consumer Electronics Society Saraj Mudigonda 26 th March, 2013 www.imgtec.com Imagination Technologies p1 Outline VoIP Applications
More informationMigration to LTE: Infrastructure Impact. Maria E. Palamara Director CDMA-LTE Strategy Alcatel-Lucent January, 2009
Migration to LTE: Infrastructure Impact Maria E. Palamara Director CDMA-LTE Strategy Alcatel-Lucent January, 2009 LTE to ehpd/hpd Interworking ehpd Internet Intranet IMS AT: Access Terminal enc: Enhanced
More informationVoice and video calling over LTE
ericsson White paper Uen 284 23-3160 Rev B November 2014 Voice and video calling over SECURING HIGH-QUALITY COMMUNICATION SERVICES OVER IP NETWORKS As mobile-broadband networks continue to expand, Vo leverages
More informationMobility Management for All-IP Core Network
Mobility Management for All-IP Core Network Mobility Management All-IP Core Network Standardization Special Articles on SAE Standardization Technology Mobility Management for All-IP Core Network PMIPv6
More informationMobile Assurance. Centralized Roaming Management System (CRMS) Brochure. www.jdsu.com/nse
Mobile Assurance Centralized Roaming Management System (CRMS) Brochure Mobile Assurance Centralized Roaming Management System CRMS Benefits Maximize Revenues Pinpoint the precise details of roaming-service
More informationConferencing Using the IP Multimedia (IM) Core Network (CN) Subsystem
GPP X.S00-0 Version.0 Version Date: May 00 Conferencing Using the IP Multimedia (IM) Core Network (CN) Subsystem Revision: 0 COPYRIGHT GPP and its Organizational Partners claim copyright in this document
More informationETSI TS 129 274 V8.0.0 (2009-01) Technical Specification
TS 129 274 V8.0.0 (2009-01) Technical Specification Universal Mobile Telecommunications System (UMTS); LTE; General Packet Radio Service (GPRS); Evolved GPRS Tunnelling Protocol (egtp) for EPS (3GPP TS
More informationHRPD Support for Emergency Services
GPP X.S000-0 Version.0 Date: July 00 HRPD Support for Emergency Services COPYRIGHT GPP and its Organizational Partners claim copyright in this document and individual Organizational Partners may copyright
More informationWhitepaper. 10 Metrics to Monitor in the LTE Network. www.sevone.com blog.sevone.com info@sevone.com
10 Metrics to Monitor in the LTE Network The deployment of LTE increases dependency on the underlying network, which must be closely monitored in order to avert serviceimpacting events. In addition, the
More informationStatus of 3G deployments and interoperability with 4G. Mike Hobby CDMA Data Marketing
Status of 3G deployments and interoperability with 4G Mike Hobby CDMA Data Marketing Value of Existing networks LTE is the technology currently getting significant attention in the press 59 LTE Operator
More informationNetwork-Based Mobility Management in the Evolved 3GPP Core Network
LTE 3GPP RELEASE 8 Network-Based Mobility Management in the Evolved 3GPP Core Network Irfan Ali, Motorola Inc. Alessio Casati, Alcatel-Lucent Kuntal Chowdhury, Starent Networks Katsutoshi Nishida, NTT
More informationMobile@Home GSM services over wireless LAN
Mobile@Home GSM services over wireless LAN Martin Bäckström, Andreas Havdrup, Tomas Nylander, Jari Vikberg and Peter Öhman What do you get when you combine mobile telephony with voice over IP (VoIP)? Mobile@Home.
More informationTop 10 Considerations for a Successful 4G LTE Evolved Packet Core Deployment
White Paper Top 10 Considerations for a Successful 4G LTE Evolved Packet Core Deployment As 1800 MHz has emerged as the main band for Long-Term Evolution (LTE) network deployments (LTE1800), LTE is going
More informationTest Cases - IMS Profile for Voice and SMS
IMS Activity Group Test Cases - IMS Profile for Voice and SMS Version 1.0 29 December 2011 IMTC_Test_Cases IMTC IMS AG Page 1 of 34 History Version Date Name Reason 1.0 15-08-2011 Bo Jönsson Version 0.12
More informationehrpd Mike Keeley Market Segment Director
ehrpd Mike Keeley Market Segment Director Agenda ehrpd What, Why, and When? ehrpd s Impact on the Core Network ehrpd s Impact on the Mobile Device Verifying ehrpd works 2 Acronyms AAA AN BSC EAP- AKA ehrpd
More informationPCC. Policy Server. Charging Systems PCEF PDN GW PCEF GGSN. Figure 1 : Generic Policy and Charging Control Architecture
PCC (Policy and Charging Control) Applications EFORT http://www.efort.com In a first EFORT tutorial related to PCC (Policy and Charging Control), the PCC architecture has been described with its entities,
More informationMobile Devices Security: Evolving Threat Profile of Mobile Networks
Mobile Devices Security: Evolving Threat Profile of Mobile Networks SESSION ID: MBS-T07 Anand R. Prasad, Dr.,ir., Selim Aissi, PhD Objectives Introduction Mobile Network Security Cybersecurity Implications
More informationNokia Siemens Networks Flexi Network Server
Nokia Siemens Networks Flexi Network Server Ushering network control into the LTE era 1. Moving towards LTE Rapidly increasing data volumes in mobile networks, pressure to reduce the cost per transmitted
More informationOptimization Handoff in Mobility Management for the Integrated Macrocell - Femtocell LTE Network
Optimization Handoff in Mobility Management for the Integrated Macrocell - Femtocell LTE Network Ms.Hetal Surti PG Student, Electronics & Communication PIT, Vadodara E-mail Id:surtihetal99@gmail.com Mr.Ketan
More informationNokia Networks. Voice over LTE (VoLTE) Optimization
Nokia Networks Voice over LTE (VoLTE) Optimization Contents 1. Introduction 3 2. VoIP Client Options 5 3. Radio Network Optimization 6 4. Voice Quality Optimization 11 5. Handset Power Consumption Optimization
More informationNetwork Access Security in Mobile 4G LTE. Huang Zheng Xiong Jiaxi An Sihua 2013.07
Network Access Security in Mobile 4G LTE Huang Zheng Xiong Jiaxi An Sihua 2013.07 Outline Mobile Evolution About LTE Overview of LTE System LTE Network Access Security Conclusion Mobile Evolution Improvements
More informationEnd-2-End QoS Provisioning in UMTS networks
End-2-End QoS Provisioning in UMTS networks Haibo Wang Devendra Prasad October 28, 2004 Contents 1 QoS Support from end-to-end viewpoint 3 1.1 UMTS IP Multimedia Subsystem (IMS)................... 3 1.1.1
More informationTechnology Business Unit. White Paper. SDN in Wireless Cellular Networks: Gearing Up to Meet the Growing Bandwidth Demand
Technology Business Unit White Paper SDN in Wireless Cellular Networks: Gearing Up to Meet the Growing Bandwidth Demand About the Author Thomas Lee Sebastian Dr. Thomas Lee Sebastian works as a Solution
More informationUMA/GAN the next wireless revolution?
UMA/GAN the next wireless revolution? Sandy Fraser Mobile Broadband Division This paper includes the opinions of the author and should not be taken as fact All trademarks are the properties of their respective
More informationNokia Networks. Voice over Wi-Fi. White paper. Nokia Networks white paper Voice over Wi-Fi
Nokia Networks Voice over Wi-Fi White paper Nokia Networks white paper Voice over Wi-Fi Contents 1 Why consider VoWiFi? 3 2 User experience requirements 4 3 Mobile operator vs. OTT services 5 4 VoWiFi
More information