3 gpp , lte and ims volte basics
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The document discusses 3GPP, LTE, IMS, and VoLTE. It begins with an introduction to 3GPP as the standards body that includes seven telecommunications organizations and defines cellular technologies. It then covers the evolution of 3GPP standards from 2G to 4G LTE and emerging 5G technologies. IMS is introduced as 3GPP's IP Multimedia Subsystem specification that allows the delivery of multimedia over packet networks. Finally, VoLTE is defined as using IMS to provide voice calls over an LTE network.
![› 3rd Generation Partnership Project (3GPP) unites [Seven] telecommunications
standard development organizations (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC), known
as “Organizational Partners” and provides their members with a stable environment
to produce the Reports and Specifications that define 3GPP technologies.
3gpp and there organizational partners](https://image.slidesharecdn.com/3gpplteandimsvoltebasics-180528084154/85/3-gpp-lte-and-ims-volte-basics-5-320.jpg)
3 gpp , lte and ims volte basics
- 1. 3GPP , LTE and IMS VOLTE By Nitin Gupta
- 2. ›What is 3GPP ? ›3GPP Evolution ›3GPP Specification Formation Flow ›Basic 2G , 3G architecture ›LTE (Long Term Evolution ) ›IMS (IP Multimedia Subsystem ) ›VOLTE (Voice over LTE ) Agenda
- 3. Telecom Industry Network equipment Manufacture (Ericsson , Huawei,Nokia Networks) Mobile Equipment manufactures (Samsung , LG , HTC ) Network Simulator Manufactures(Anite , R&S,Spirent,Anritsu) Operators (Airtel , Vodafone , Idea , Reliance) Chipset Manufactures (Qualcomm , Intel, Mediatek , Spreadtrum)
- 5. › 3rd Generation Partnership Project (3GPP) unites [Seven] telecommunications standard development organizations (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC), known as “Organizational Partners” and provides their members with a stable environment to produce the Reports and Specifications that define 3GPP technologies. 3gpp and there organizational partners
- 6. • TSDSI "Telecommunications Standards Development Society, India" aims at developing and promoting India-specific requirements, standardizing solutions for meeting these requirements and contributing these to international standards, contributing to global standardization in the field of telecommunications. • "This is to announce that as of 1st January, 2015, TSDSI has become a full-fledged Organizational Partner (OP) of the 3rd Generation Partnership Project (3GPP).” TSDSI Organizational Partner FROM INDIA (1st January, 2015) S.N. Rights Corporate Associate 1 Participation in General Yes Yes Body Meetings, testevents, seminars,workshops 2 Inclusion in mailing list for Yes Yes information about events 3 Online access to initial Yes Yes draft Standard formulatedby TSDSI 4 Online submission of Yes Yes comments on initial draft Standard formulated by TSDSI 5 Participation in technical Yes Yes committees, workinggroups of TSDSI 6 Participation in meetings Yes No of standards bodies inwhich TSDSI is a Partner Organization 7 Representation in the Yes No Governing Council 8 Voting rights in General Yes No Body and in relevant specific technical issues 9 Request for formulation of Yes Yes a fresh Standard
- 8. 3GPP Evolution from 2G to LTE Advanced
- 9. 9 Evolution of the Radio Interface and there speed EDGE EDGE+ W-CDMA HSPA HSPA+ 20002000 LTE LTE-Advanced 9 20102010 384Kb/s 1Mb/s 384Kb/s 42Mb/s18Mb/s 100Mb/s 1000Mb/s Standards availability
- 10. Evolution 4G to 5G
- 11. LTE Advanced Pro (4.5G)
- 12. Specification Formation Flow 3gpp
- 13. LTE UE Specifications for Big Picture.
- 14. Start, Freeze and End dates For LTE 3GPP Releases
- 15. LTE INTRODUCTION
- 16. 2G Architecture
- 18. • LTE stands for Long Term Evolution and it was started as a project in 2004 by telecommunication body known as the Third Generation Partnership Project (3GPP). • LTE evolved from an earlier 3GPP system known as the Universal Mobile Telecommunication System (UMTS), which in turn evolved from the Global System for Mobile Communications (GSM). LTE
- 20. The E-UTRAN (The access network)
- 21. The Evolved Packet Core (EPC) (The core network)
- 23. LTE Protocol Stack of UE , ENB and MME
- 24. LTE Channels
- 25. LTE Architecture in Detail
- 26. IMS
- 27. • IMS is one of 3GPP’s greatest success stories. • Originally designed to evolve UMTS networks to deliver Internet Protocol multimedia to mobile users. • IMS has become the core component within 3G, cable TV and next generation fixed telecoms networks. • IMS specification began in 3GPP Release 5 as part of the core network evolution from circuit-switching to packet-switching and was refined by subsequent Releases 6 and 7. IMS (IP-Multimedia Subsystem)
- 28. IMS The IP Multimedia Subsystem IMS Capture the benefits of convergence GSM/ WCDMA DSL WLAN PSTNLTE LTE GSM WCDMA
- 29. Standardization bodies FOR IMS/VOLTE IMS Architecture SIP, Diameter Presence, MessagingVoLTE Global System for Mobile Communications
- 30. IMS Architecture
- 31. • User Equipment (UE) is the mobile terminal which may be a smartphone or tablet or any communication device which is authorized to be used in the network. An IMS powered UE has two main components. • Universal Integrated Circuit Card (UICC) • Session Initiation Protocol User Agent (SIP UA) Special User Equipment (UE)
- 32. • Each UE must contain one UICC and each UICC may have one or more of the following modules. • Subscriber Identity Module (SIM): SIM identity information used by a GSM network. • UMTS Subscriber Identity Module (USIM): USIM information used by a UMTS or LTE network. • IP Multimedia Services Identity Module (ISIM): ISIM identity information used by the IMS subsystem. Universal Integrated Circuit (UICC)
- 33. • SIP User Agent resides in the UE to transmit and receive SIP messages. SIP-UA provides basic telephony functionality. It can act in two different roles: • User Agent Client (UAC): As a client to send SIP request • User Agent Server (UAS): As a server to receive requests and send response SIP User Agent (SIP-UA)
- 34. THE IMS CORE
- 35. • Call Session Control Function (CSCF) CSCF is responsible for establishing, monitoring, supporting and releasing multimedia sessions. It has three different functional elements which may or may not be separate physical entities. • Proxy CSCF: P-CSCF is seen as the initial point of contact from any SIP User Agent. It handles all requests from the UE and is, from the UE’s point of view, the “SIP proxy” to the entire subsystem. • Interrogating CSCF: I-CSCF is the entity that initiates the assignment of a user to an S- CSCF (by querying the HSS) during registration. • Serving CSCF: S-CSCF has knowledge about the user and what applications are available to the user. It acts as a decision point and it’s main job is to decide whether or not the user’s SIP messages will be forwarded to the application servers. IMS core has the following important nodes
- 36. • Home Subscriber Server (HSS) :HSS is a database that maintains user profile and location information and is responsible for name/address resolution. HSS is also responsible for authentication and authorization. • Subscriber Location Function (SLF) :SLF is responsible for assigning HSS to user in home network. To achieve this function SLF keeps track of all HSS. • Media Gateways :Media Gateway resides at the interface between SIP based IMS network and traditional PSTN network. • Media Gateway Control Function(MGCF) :Media Gateway Control Function controls media gateways, converts codecs where necessary and may serve as a breakout to a circuit-switched network. • Breakout Gateway Control Function (BGCF) :When Media Gateway Control Function does not include breakout to circuit-switched network, BGCF takes care of this functionality. Other IMS nodes
- 37. IMS BIG PICTURE
- 38. • IMS is made up of a lot of different set of specification interplaying each other which create a lot of confusions. IMS Specifications
- 39. VOLTE
- 41. VoLTE QOS
- 42. THANK YOU
Editor's Notes
- #30: IMS is an architecture suitable for any IP based packet system. It’s a service engine, providing multimedia services over any access. It can be used on various terminals, over fixed or mobile access. The main driver for IMS is Voice over LTE, or VoLTE. IMS has been chosen as the service engine for providing voice services over LTE. This is needed, since LTE has no built-in voice service.
- #31: The 3GPP is the standards organization responsible for the development of the IMS Architecture. Node functions, protocols and interfaces are specified in 3GPP’s Technical Specifications and Reports. The two main protocols used in IMS are SIP and Diameter. They are developed by IETF. The main focus of IETF is the evolution of the Internet architecture and the smooth operation of the Internet. OMA support the creation of interoperable end-to-end mobile services. In IMS, OMA has developed the specifications for Instant Messaging and Presence. The standards organization GSMA is focused on driving the growth of the mobile communications industry. In IMS, they are working on specifications for Voice over LTE.
- #42: In the LTE/EPC standard there is no Circuit Switched (CS) domain. This means that the telephony service (voice, video and SMS) has to be implemented as a packet service. LTE/EPC as a technology gives rise to the possibility for many different solutions to provide the telephony service. However, the only standardized service engine to provide the telephony service over LTE is IMS/MMTel. The picture above shows the involved nodes and interfaces in the Ericsson implementation of the VoLTE architecture, using IMS/MMTel as the service engine. As we can see, VoLTE is built up of IMS together with EPS, the evolved packet system, and EPS is built up of E-UTRAN and the EPC, evolved packet core.
- #43: In the LTE/EPC standard there is no Circuit Switched (CS) domain. This means that the telephony service (voice, video and SMS) has to be implemented as a packet service. LTE/EPC as a technology gives rise to the possibility for many different solutions to provide the telephony service. However, the only standardized service engine to provide the telephony service over LTE is IMS/MMTel. The picture above shows the involved nodes and interfaces in the Ericsson implementation of the VoLTE architecture, using IMS/MMTel as the service engine. As we can see, VoLTE is built up of IMS together with EPS, the evolved packet system, and EPS is built up of E-UTRAN and the EPC, evolved packet core.