DOCSLIB.ORG

IMS MSS / NVS for Voice Call Connectivity 3G CS/PS Content SGSN / GGSN / and MME S-GW and P-GW Service Networks LTE Evolved Packet Core

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
IMS MSS / NVS for Voice Call Connectivity 3G CS/PS Content SGSN / GGSN / and MME S-GW and P-GW Service Networks LTE Evolved Packet Core Стратегия и решения Nokia Siemens Networks для опорной сети SAE. Варианты интеграции опорных сетей GSM/WCDMA/SAE. Реализация голосовых и мультимедиа услуг для сети LTE/SAE Владимир Шапоров Москва, 09 сентября 2009 года LTE Road Show 2009 1 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Long term evolution goes live Evolved Packet Core Market needs and trends 2 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров How to streamline core network to meet future requirements? Meet the capacity requirements Streamline network architecture FR E1/T1 ATM IP Cost efficiency required Provide all services over a single networking technology 3 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров From walled garden to open Internet services Mobile Broadband; 2G/3G GPRS HSPA, HSPA+, I-HSPA, LTE WAP, Open Services downloads Internet €/kbit €/min €/piece All you can eat Max 5 GB/month Charging max 1Mbit/s 20 € model WAP Ringtone Music 20 €/month Service Operator and partner services awareness and DPI WAP Ringtone Music Type of Differentiated Net neutrality control online charging Statistics collection for network planning and optimization 4 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Solutions to meet future core network needs Evolved Packet Core elements optimized according to their roles in 3GPP R8: MME: S-GW and P-GW: Mobility Broadband connectivity Centralized control management Policy Enforcement Centralized/distributed gateways Transaction and Throughput capacity Packet processing signaling capacity to support capacity to support to support mobility data services’ growth real-time services 5 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Packet Core Evolution in 3GPP network Direct tunnel I-HSPA LTE/SAE HSPA R6 HSPA R7 HSPA R7 LTE R8 GGSN GGSN GGSN SAE GW/ GGSN SGSN SGSN SGSN MME/ SGSN RNC RNC Control User plane plane Node-B Node-B Node-B eNode-B • Direct Tunnel is mandatory in 3GPP R8 • As the only vendor in the idustry we already support direct tunnel as optional SW feature in Nokia Siemens Networks SGSN • Our SGSN is SW upgradable to MME • SAE GW functionality will be introduced on Next Generation Flexi ISN hardware platform 6 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Packet Core Evolution LTE Network Architecture – 3GPP RAN Evolved Packet Core (EPC) PCRF Combi S7c BSC SGSN/MME 2G Gb S7 SGSN SAE Gateway S4 Rx+ Iu Serving PDN RNC S5 GW 3G GW SGi S12 S3 NodeB Operator S11 S1-U Services S1-MME MME LTE S6a Internet eNodeB Corporate S10 Services Non 3GPP S2c AAA ePDG Untrusted Non-3GPP S2b IP Access HSS Trusted Non-3GPP Control plane S2a User plane IP Access 7 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Long term evolution goes live Evolved Packet Core NSN Vision and Solutions 8 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Key milestones Nokia Siemens Networks packet core 2000 1st in packet core 2002 Service aware GGSN single access point 2003 experimental packet inspection Traffic Analyzer 2004 Flexi ISN Blade based extended GGSN 9 © Nokia Siemens Networks 2005 On-line charging policy enforcement with Diameter 2006 Nokia and Siemens bring two leaders together for more scale LTE Road Show 2009 / 2007 BitTorrent P2P detection in Flexi ISN (3GSM Barcelona) st Владимир Шапоров 2007 Combi SGSN 1 true 2G/3G multifunction SGSN 2008 Direct Tunnel SGSN defines flat core 2008 First LTE reference New Platforms! Ö “SGSN in LTE” Flexi Ö ATCA platform Network Ö 2M subscribers/bearers Server Ö 20 k eNodeBs Ö Builds on SGSN SW Ö“GGSN” in LTE Ö ATCA platform Flexi Ö Up to 50 Gbps Network Gateway Ö Up to 5M bearers Ö Scalable from small to large 10 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Introducing 3GPP R8 compliant Evolved Packet Core for mobile broadband • Dedicated control plane element for optimized handling of signaling Flexi NS traffic 3GPP • High transaction and connectivity accesses Control plane Content and service 3G Flexi NG networks MME / 3G SGSN LTE User plane S-GW / P-GW / GGSN • High throughput and packet processing capacity • High signaling and connectivity capability • Flexibility to introduce intelligence in mobile IP edge 11 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Telecom class ATCA platform New technology updates available Fast time to with industry market with evolution Flexible deployment commercial options, multiple off the shelf HW chassis sizes ATCA is one of the strategic platforms in NSN. For high capacity GGSN and S-GW/P-GW an ATCA platform was preferred over router based platforms due to better cost performance and more flexibility. 12 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Cost efficiency in the key dimensions Flexibility MME Scaling according to your needs in network MME design Subscribers Transactions S-GW / P-GW S-GW Throughput in Gbit/s and pps S-GW/P-GW P-GW Cost efficiency All-IP High capacity, low latency network to provide all services 13 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Long term evolution goes live Evolved Packet Core Evolution to Voice over LTE 14 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Common voice control solution provides smooth evolution to voice over LTE Business Support System 2G CS/PS MGW MSS NVS IMS MSS / NVS for voice call connectivity 3G CS/PS Content SGSN / GGSN / and MME S-GW and P-GW service networks LTE Evolved Packet Core 15 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Inside NSN Voice over LTE Solution “Fast Track Voice over LTE” AS AS AS BGCF HSS CSCF IMSIMSMGCF BCF PDF MGW Rel 8 PC 2.0 Rel.2 Rel 7 Rel 1 Rel 6 Rel 5 Broadband Cable Mobile All Standards point to IMS and SIP technology as key drivers for converged networks 16 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров LTE used for high speed data Primary voice service with Fallback to CS (CSFB) Laptop with Data MME LTE data card SAE GW Internet LTE/2G/3G LTE radio capable network Control plane interface Operator CS voice to enable CSFB IP network Broadband Increased Full IMS LTE radio centric introduction efficiency for multimedia voice service service architecture LTE LTE IP LTE o 2G/3G CS IP HSPA & I-HSPA HSPA & I-HSPA o HSPA & I- V V 2G/3G n S n HSPA o IMS o ti ti 2G/3G lu to lu e NV n so network c so io u t d u l o o tr v In NVS E MSC Server MGW MGW I PS PS MSS MSS PS M System NVS S • LTE deployed as high speed data to address data growth • Voice mainly circuit switched • CS Fallback for voice allows to continue using existing MSC Servers 17 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Smooth transition – Fast Track VoLTE (VoIP over LTE) Primary Voice service to MSC Server with IMS-ready upgrade VoIP MME LTE PS/VoIP capable SAE GW Internet LTE radio network Control plane interface SIP Rx/Gx OperatorOperator to enable CSFB and SRVCC VoIP IP IPnetwork network CS voice Broadband Increased Full IMS 2G/3G CS LTE radio centric introduction efficiency for multimedia voice service service architecture LTE LTE IP network LTE o IP HSPA & I-HSPA HSPA & I-HSPA o HSPA & I- V V 2G/3G n S n HSPA o IMS o ti ti 2G/3G lu to lu e NV n so MSC Server c io so u t d u l o o tr v In NVS E MGW MGW I PS PS MSS System / NVS MSS M PS NVS S • By upgrading MSS with NVS VoIP SW and adding an IMS-ready hw unit secures a fast track to VoIP over LTE – a smooth evolution step towards IMS • VoIP as primary voice service with QoS and LTE to 2G/3G voice continuity • Full CS infrastructure and business systems reuse 18 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Fast Track VoLTE for MSS based evolution with investment protection and OPEX savings SMSC Billing Prepaid O&M LI •LTE functionality expansion to existing MSS with Fast Track VoLTE – Nokia Siemens Networks mobile VoIP Server (NVS) upgrade LTE Access Controller on and OPEX savings IP-Tra nsport MSS/NVS •No integration costs to existing administrative and support systems: Provisioning, Billing, Prepaid, O&M, Legal Investment protecti Interception, etc. LTE 2G/3G Radio Access Radio Access Broadband • Excellent TCO 19 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Live at MWC09: LTE VoIP calls at NSN stand NSN lab in Munich LTE call MGW MGCF IMS NVS Public GSM network Visitor terminal at the stand Live LTE radio interface Live radio and core equipment in a shielded box in the machine room Public Internet MME NCS LTE demo BTS Flexi Multiradio BTS S-GW P-GW terminal antenna Stand Machine room in the backstage of the stand 20 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Communication Suite – the RCS enabler Let your customers enjoy your services over the Internet Communication Key • SIM USB STICK • One number • SIM authentication • Rich communication • Future services 21 © Nokia Siemens Networks LTE Road Show 2009 / Владимир Шапоров Single Radio Voice Call Continuity (SRVCC) Operator VoIP control for LTE LTE PS/VoIP VoIP IMS Internet capable MME and VCC LTE radio network SAE GW Interworking function Operator enabling PS to CS IP network CS voice handover 2G/3G CS network MSC Server System • IMS is the 3GPP standardized connectivity control machinery for voice and multimedia sessions • MME makes a handover for PS voice session • Interworking function is needed between MME and MSS • Voice session is handed over to 2G/3G CS voice, procedure is standardized in 3GPP Rel-8 • Simulatenous voice and data sessions can be supported: - In 3G network when multi-RAB is enabled - In 2G
Load more

Recommended publications
  • Voice Over LTE Volte
    Whitepaper Voice Over LTE VoLTE estingTABLE OF CONTENTS FTTx Networks 1. Motivations for Enabling Voice over LTE 2.Featurin Requirements for Voiceg over PONs LTE 3. LTE Voice Options 4. Overview of GSMA PRD IR.92 5. Service Continuity 6.Systems Voice over LTE Verification sdfsdf7. Summary 8. References Motivations for Enabling Voice over LTE The motivation for the deployment of 3GPP Long-term Evolution (LTE) mobile broadband technology is simple: All things considered, LTE delivers to carriers the lowest cost-per-transported bit. That said, the adage that “voice pays the bills” still applies: though in decline, carriers continue to derive the bulk of their revenues from voice and integrated messaging services. In the context of LTE, this presents a dilemma. A fundamental aspect of legacy technologies such as GSM, UMTS, and cdma2000 is that they possess integrated services1: voice, voice supplementary services (e.g., call forwarding), short messaging, etc. In contrast, LTE makes no such provisions: it is subscriber service-agnostic. Further, LTE is a pure packet technology, with no inherent conception of a circuit-switched (CS) bearer, on which legacy voice services depend. Because of the realities of the cellular revenue model – and, indeed, because cellular subscribers expect service continuity – the question arises: How can we best deliver voice and other legacy services via LTE? As with any engineering exercise, this requires articulation of the requirements. Requirements for Voice over LTE The requirements for voice2 over LTE (VoLTE) solutions fall into one – or both – of two categories: the requirements of cellular subscribers, and the requirements of cellular carriers.
    [Show full text]
  • Alcatel-Lucent INTERNET PROTOCOL MULTIMEDIA SUBSYSTEM (IMS) SOLUTION MAINTENANCE RELEASE 07.00.05 and CONTROLLED INTRODUCTION RELEASE 07.01.00
    Alcatel-Lucent INTERNET PROTOCOL MULTIMEDIA SUBSYSTEM (IMS) SOLUTION MAINTENANCE RELEASE 07.00.05 AND CONTROLLED INTRODUCTION RELEASE 07.01.00 EXTERNAL RELEASE NOTES 275 -100 - 004R07.01.00 APRIL 2009 ISSUE 1 Alcatel, Lucent, Alcatel-Lucent and the Alcatel-Lucent logo are trademarks of Alcatel-Lucent. All other trademarks are the property of their respective owners. The information presented is subject to change without notice. Alcatel-Lucent assumes no responsibility for inaccuracies contained herein. Copyright © 2009 Alcatel-Lucent. All Rights Reserved. Contents About this document v Purpose.......................................................................................................................................................v Reason for reissue ......................................................................................................................................v Intended audience.......................................................................................................................................v Supported systems......................................................................................................................................v Conventions used .......................................................................................................................................v Technical support.......................................................................................................................................v How to order ...........................................................................................................................................
    [Show full text]
  • Voice Over LTE: Status and Migration Trends Page 1 of 15
    Voice over LTE: Status and Migration Trends Page 1 of 15 Voice over LTE: Status and Migration Trends Lav Gupta, lavgupta (at) wustl.edu (A paper written under the guidance of Prof. Raj Jain) Download Abstract Rapid increase in data traffic over cellular network is necessitating deployment of Long Term Evolution (LTE) in the cellular operators networks. While LTE provides efficient data traffic handling and high data rates, it lacks native circuit switched voice capability. The GSM association has standardized IP Multimedia Subsystem (IMS) based VoLTE solution along with Single radio SRVCC for handover. Migration to this solution requires operators to have expensive and complex IMS deployments. This has led to operators leveraging the existing 2G/3G networks with VoLTE methods like Circuit Switched Fallback (CSFB) and Voice over LTE via Generic Access (VoLGA). This paper describes both, the interim and the long-term, solutions for the operators and their respective pro and cons. Future directions in VoLTE research have also been briefly described. Keywords VoLTE, Circuit Switched Fall Back, CSFB, Voice over LTE via Generic Access, VoLGA, Single Radio Voice Call Continuity, SRVCC, IMS, IP Multimedia Subsystem, handover, Evolved Packet Core, Evolved UMTS Radio Access Network, MME Table of Contents 1 Introduction to LTE and VoLTE • 1.1 LTE Overview • 1.2 Basics of Voice over LTE 2 VoLTE Architectures and Protocols • 2.1 Circuit Switched Fallback (CSFB) • 2.2 Voice over LTE via Generic Access (VoLGA) • 2.3 GSMA profile for VoLTE • 2.4 OTT Solutions
    [Show full text]
  • ETSI TS 123 216 V9.6.0 (2011-01) Technical Specification
    ETSI TS 123 216 V9.6.0 (2011-01) Technical Specification Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Single Radio Voice Call Continuity (SRVCC); Stage 2 (3GPP TS 23.216 version 9.6.0 Release 9) 3GPP TS 23.216 version 9.6.0 Release 9 1 ETSI TS 123 216 V9.6.0 (2011-01) Reference RTS/TSGS-0223216v960 Keywords GSM, LTE, UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http://portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as authorized by written permission.
    [Show full text]
  • (12) United States Patent (10) Patent No.: US 8,599,838 B2 Buckley (45) Date of Patent: Dec
    US008599838B2 (12) United States Patent (10) Patent No.: US 8,599,838 B2 Buckley (45) Date of Patent: Dec. 3, 2013 (54) SYSTEMAND METHOD FOR 2004/O137918 A1 7/2004 Varonen et al. EFFECTUATING ASIP CALL INA 2004/O184435 A1 9, 2004 Westman 2004/0203680 A1 10/2004 Sylvain NETWORKENVIRONMENT INCLUDING 2004/0235483 A1 1 1/2004 Sylvain MS 2005/0058.125 A1 3/2005 Mutikainen et al. .......... 370,354 2005/O130657 A1 6/2005 Creamer et al. (75) Inventor: Adrian Buckley, Tracy, CA (US) (Continued) (73) Assignee: BlackBerry Limited, Waterloo (CA) FOREIGN PATENT DOCUMENTS (*) Notice: Subject to any disclaimer, the term of this EP 1811 745 A1 7/2007 patent is extended or adjusted under 35 EP 2367335 9, 2011 U.S.C. 154(b) by 554 days. (Continued) (21) Appl. No.: 12/915,125 OTHER PUBLICATIONS (22) Filed: Oct. 29, 2010 CIPO, Office Action, Application No. 2,605,102, Nov. 21, 2012, 3 pg.S. (65) Prior Publication Data (Continued) US 2011 FOO44325 A1 Feb. 24, 2011 Primary Examiner — Simon Sing Related U.S. Application Data Assistant Examiner — Simon King (63) Continuation of application No. 1 1/347,874, filed on (74) Attorney, Agent, or Firm — The Danamraj Law Group, Feb. 6, 2006, now Pat. No. 7,830,868. P.C. (51) Int. Cl. (57) ABSTRACT H04L 2/66 (2006.01) In one embodiment, a scheme is disclosed for effectuating a (52) U.S. Cl. call in a network environment including a circuit-switched USPC ........ 370/353; 370/354; 370/356; 379/88.17; (CS) network and an IP multimedia subsystem (IMS) net 455/403:455/428 work.
    [Show full text]
  • Etsi Ts 123 216 V15.3.0 (2019-10)
    ETSI TS 123 216 V15.3.0 (2019-10) TECHNICAL SPECIFICATION Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Single Radio Voice Call Continuity (SRVCC); Stage 2 (3GPP TS 23.216 version 15.3.0 Release 15) 3GPP TS 23.216 version 15.3.0 Release 15 1 ETSI TS 123 216 V15.3.0 (2019-10) Reference RTS/TSGS-0223216vf30 Keywords GSM,LTE,UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice The present document can be downloaded from: http://www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI deliverable is the one made publicly available in PDF format at www.etsi.org/deliver. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx If you find errors in the present document, please send your comment to one of the following services: https://portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI.
    [Show full text]
  • Road to 5G: Introduction and Migration April 2018
    Road to 5G: Introduction and Migration April 2018 ROAD TO 5G: INTRODUCTION AND MIGRATION About the GSMA Future Networks Programme The GSMA represents the interests of mobile operators The GSMA’s Future Networks is designed to help operators worldwide, uniting nearly 800 operators with almost 300 and the wider mobile industry to deliver All-IP networks so companies in the broader mobile ecosystem, including that everyone benefits regardless of where their starting handset and device makers, software companies, point might be on the journey. equipment providers and internet companies, as well as The programme has three key work-streams focused on: organisations in adjacent industry sectors. The GSMA also The development and deployment of IP services, The produces industry-leading events such as Mobile World evolution of the 4G networks in widespread use today, The Congress, Mobile World Congress Shanghai, Mobile World 5G Journey developing the next generation of mobile Congress Americas and the Mobile 360 Series of technologies and service. conferences. For more information, please visit the Future Networks For more information, please visit the GSMA corporate website at: www.gsma.com/futurenetworks website at www.gsma.com. Follow the GSMA on Twitter: @GSMA. Document Editor Dongwook Kim, 5G Project Manager Michele Zarri, Technical Director – Networks Acknowledgement (5G Introduction Project Members) Applied Communication Sciences MediaTek Inc. ARM Ltd. Nokia AT&T Mobility NTT DOCOMO, Inc. Axiata Group Berhad OranGe China Mobile Limited Qualcomm Incorporated China Telecommunications Corporation SinGTel Mobile SinGapore Pte. Ltd. China Unicom SK Telecom Co., Ltd. Deutsche Telekom AG SoftBank Corp. DISH Network Corporation Sprint Corporation Ericsson Syniverse TechnoloGies, Inc GuanGdonG OPPO Mobile Telecommunications Corp.,Ltd.
    [Show full text]
  • IR.64 - IMS Service Centralization and Continuity Guidelines
    GSM Association Non-confidential Official Document IR.64 - IMS Service Centralization and Continuity Guidelines IMS Service Centralization and Continuity Guidelines Version 12.0 15 September 2015 This is a Non-binding Permanent Reference Document of the GSMA Security Classification: Non-confidential Access to and distribution of this document is restricted to the persons permitted by the security classification. This document is confidential to the Association and is subject to copyright protection. This document is to be used only for the purposes for which it has been supplied and information contained in it must not be disclosed or in any other way made available, in whole or in part, to persons other than those permitted under the security classification without the prior written approval of the Association. Copyright Notice Copyright © 2015 GSM Association Disclaimer The GSM Association (“Association”) makes no representation, warranty or undertaking (express or implied) with respect to and does not accept any responsibility for, and hereby disclaims liability for the accuracy or completeness or timeliness of the information contained in this document. The information contained in this document may be subject to change without prior notice. Antitrust Notice The information contain herein is in full compliance with the GSM Association’s antitrust compliance policy. V12.0 Page 1 of 23 GSM Association Non-confidential Official Document IR.64 - IMS Service Centralization and Continuity Guidelines Table of Contents 1 Introduction 3 1.1
    [Show full text]
  • Voice and SMS in LTE White Paper
    voice and SMS in LTE. LTE. in and SMS voice of support from the resulting requirements measurement and test addresses also paper The white options. different the for implications commercial the and process, information on the standardization background includes It (VoLTE). LTE over voice and SGs, over SMS (CSFB), fallback switched circuit including LTE, in (SMS) service message and short voice supporting for options technology the summarizes paper This white Paper White LTE in SMS and Voice 1MA197 C. Gessner, O. Gerlach May 2011 1e Table of Contents Table of Contents 1 Introduction ............................................................................ 3 2 Overview ................................................................................. 3 3 Circuit switched fallback (CSFB).......................................... 5 3.1 Circuit switched fallback to GERAN or UTRAN ........................................5 3.2 Circuit switched fallback to 1xRTT...........................................................10 4 SMS over SGs....................................................................... 15 5 Support of voice and SMS via IMS ..................................... 18 5.1 Overview of the IMS framework................................................................19 5.2 EPS attach and P-CSCF discovery...........................................................23 5.3 IMS registration, authentication and key agreement..............................24 5.4 Obtaining voice services via IMS..............................................................27
    [Show full text]
  • Single Radio Voice Call Continuity (SRVCC) with LTE By: Shwetha Vittal, Lead Engineer
    White Paper Single Radio Voice Call Continuity (SRVCC) with LTE By: Shwetha Vittal, Lead Engineer Overview CONTENTS Long Term Evolution (LTE) is heralded as the next big thing for mobile Why SRVCC? pg. 2 networks. It brings in promising technologies such as semi-persistent Single Radio Voice Call Continuity scheduling, transmission time interval (TTI) bundling, and high performance From LTE pg. 3 gains on Quality of end user Experience (QoE). In the end, the primary goal of LTE is to deliver ultra-high speed mobile broadband with peak data rates over SRVCC from LTE to 3GPP2 1XCS pg. 4 100 Mbps. However, in practical applications LTE is facing challenges to provide SRVCC from LTE to 3GPP UTRAN/GERAN pg. 7 the same capabilities as a 2G/3G network during the initial stages of trial deployments and operators’ metered investment in broad network build out. Conclusion pg. 9 One of the key issues of LTE is the delivery of voice services. Voice remains the References pg. 10 “killer application” for operators because it still accounts for a large portion of their revenue. Voice will continue to remain the dominant must-have service in the network for years, and despite the technical challenges of providing service over an all-Internet Protocol (IP) radio access network (RAN), voice is seen as a basic service by the consumer; in short, it is expected. However, voice service continuity is not guaranteed when a Voice over IP (VoIP) subscriber roams between the LTE coverage area and other wireless networks—and it is a significant challenge to deliver voice over LTE networks.
    [Show full text]
  • The Untold Secrets of Operational Wi-Fi Calling Services: Vulnerabilities, Attacks, and Countermeasures
    The Untold Secrets of Operational Wi-Fi Calling Services: Vulnerabilities, Attacks, and Countermeasures TIAN XIE, Michigan State University GUAN-HUA TU, Michigan State University BANGJIE YIN, Michigan State University CHI-YU LI, National Chiao Tung University CHUNYI PENG, Purdue University MI ZHANG, Michigan State University HUI LIU, Michigan State University XIAOMING LIU, Michigan State University Since 2016, all of four major U.S. operators have rolled out nationwide Wi-Fi calling services. They are projected to surpass VoLTE (Voice over LTE) and other VoIP services in terms of mobile IP voice usage minutes in 2018. They enable mobile users to place cellular calls over Wi-Fi networks based on the 3GPP IMS (IP Multimedia Subsystem) technology. Compared with conventional cellular voice solutions, the major difference lies in that their traffic traverses untrustful Wi-Fi networks andthe Internet. This exposure to insecure networks may cause the Wi-Fi calling users to suffer from security threats. Its security mechanisms are similar to the VoLTE, because both of them are supported by the IMS. They include SIM-based security, 3GPP AKA (Authentication and Key Agreement), IPSec (Internet Protocol Security), etc. However, are they sufficient to secure Wi-Fi calling services? Unfortunately, our study yields a negative answer. We conduct the first study of exploring security issues of the operational Wi-Fi calling services in three major U.S. operators’ networks using commodity devices. We disclose that current Wi-Fi calling security is not bullet-proof and uncover four vulnerabilities which stem from improper standard designs, device implementation issues and network operation slips. By exploiting the vulnerabilities, together with several state-of-the-art computer visual recognition technologies, we devise two proof-of-concept attacks: user privacy leakage and telephony harassment or denial of voice service (THDoS); both of them can bypass the security defenses deployed on mobile devices and the network infrastructure.
    [Show full text]
  • Vo5g Technical White Paper
    Vo5G Technical White Paper Date July, 2018 HUAWEI TECHNOLOGIES CO., LTD. Copyright © Huawei Technologies Co., Ltd. 2018. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd. Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders. Notice This document may contain forecasting information, including but not limited to information about future financials, operations, product lines, new technologies, and more. Because there are many uncertainties in practice, the actual results may differ greatly from the forecast information. Therefore, the information in this document is for informational purposes only and does not constitute an offer or promise. Huawei may modify the above information without notice without prior notice. Huawei Technologies Co., Ltd. Address: Huawei Industrial Base, Bantian, Longgang, Shenzhen 518129 People's Republic of China Website: http://www.huawei.com 1 Vo5G Technical White Paper Contents 1 Introduction .............................................................................................................................. 5 2 Vo5G Has Been Standardized Together with 5G ............................................................. 5 2.1 What Is Vo5G? .....................................................................................................................
    [Show full text]