This presentation discusses 3GPP's System Architecture Evolution (SAE) which aims to provide services over any access network through a common IP-based core network. It covers migration from GSM to a multi-access system using SAE/LTE, including support for SIM/USIM/ISIM, security evolution, and interworking of multi-mode terminals and networks through service continuity, multiple registration, and voice call continuity. IMS is also discussed as the service platform for multimedia services in 3GPP networks.
3GPP SON Series: Minimization of Drive Testing (MDT)3G4G
This SON tutorial is part of the 3GPP Self-Organizing Networks series (#3GPPSONSeries). In this part we will look at a very important feature called Minimization of Drive Testing (MDT)
All our #3G4G5G slides and videos are available at:
Videos: https://www.youtube.com/3G4G5G
Slides: https://www.slideshare.net/3G4GLtd
SON Page: https://www.3g4g.co.uk/SON/
5G Page: https://www.3g4g.co.uk/5G/
Free Training Videos: https://www.3g4g.co.uk/Training/
This video / presentation looks at how RRC states have changed from 3G to 4G and not to 5G NR. Why was the new RRC_INACTIVE state introduced; how will it reduce the latency which will help URLLC; what are the different NAS states in 4G EPC and 5G Core and how do they map to RRC and UE states. Finally we look at some basic signalling example to understand the RRC Resume and Inactive state.
All our #3G4G5G slides and videos are available at:
Videos: https://www.youtube.com/3G4G5G
Slides: https://www.slideshare.net/3G4GLtd
5G Page: https://www.3g4g.co.uk/5G/
Free Training Videos: https://www.3g4g.co.uk/Training/
This brief tutorial for newbies explains the need for The 3rd Generation Partnership Project (3GPP), its working, structure and provides useful pointers to explore further.
All our #3G4G5G slides, videos, blogs and tutorials are available at:
Free Training Videos: https://www.3g4g.co.uk/Training/
Videos: https://www.youtube.com/3G4G5G
Slides: https://www.slideshare.net/3G4GLtd
Our channels:
3G4G Website – https://www.3g4g.co.uk/
The 3G4G Blog – https://blog.3g4g.co.uk/
Telecoms Infrastructure Blog – https://www.telecomsinfrastructure.com/
Operator Watch Blog – https://www.operatorwatch.com/
Connectivity Technology Blog – https://www.connectivity.technology/
Free 5G Training – https://www.free5gtraining.com/
Free 6G Training – https://www.free6gtraining.com/
Private Networks Technology Blog - https://blog.privatenetworks.technology/
3GPP Packet Core Towards 5G Communication SystemsOfinno
This presentation provides an overview of 3GPP packet core and 5G systems. Some enabler features are outlined, such as network slicing. This presentation was prepared for the 20th Annual International Conference on Next Generation Internet and Related Technologies Net-Centric 2017 that was held at George Mason University.
3GPP SON Series: Minimization of Drive Testing (MDT)3G4G
This SON tutorial is part of the 3GPP Self-Organizing Networks series (#3GPPSONSeries). In this part we will look at a very important feature called Minimization of Drive Testing (MDT)
All our #3G4G5G slides and videos are available at:
Videos: https://www.youtube.com/3G4G5G
Slides: https://www.slideshare.net/3G4GLtd
SON Page: https://www.3g4g.co.uk/SON/
5G Page: https://www.3g4g.co.uk/5G/
Free Training Videos: https://www.3g4g.co.uk/Training/
This video / presentation looks at how RRC states have changed from 3G to 4G and not to 5G NR. Why was the new RRC_INACTIVE state introduced; how will it reduce the latency which will help URLLC; what are the different NAS states in 4G EPC and 5G Core and how do they map to RRC and UE states. Finally we look at some basic signalling example to understand the RRC Resume and Inactive state.
All our #3G4G5G slides and videos are available at:
Videos: https://www.youtube.com/3G4G5G
Slides: https://www.slideshare.net/3G4GLtd
5G Page: https://www.3g4g.co.uk/5G/
Free Training Videos: https://www.3g4g.co.uk/Training/
This brief tutorial for newbies explains the need for The 3rd Generation Partnership Project (3GPP), its working, structure and provides useful pointers to explore further.
All our #3G4G5G slides, videos, blogs and tutorials are available at:
Free Training Videos: https://www.3g4g.co.uk/Training/
Videos: https://www.youtube.com/3G4G5G
Slides: https://www.slideshare.net/3G4GLtd
Our channels:
3G4G Website – https://www.3g4g.co.uk/
The 3G4G Blog – https://blog.3g4g.co.uk/
Telecoms Infrastructure Blog – https://www.telecomsinfrastructure.com/
Operator Watch Blog – https://www.operatorwatch.com/
Connectivity Technology Blog – https://www.connectivity.technology/
Free 5G Training – https://www.free5gtraining.com/
Free 6G Training – https://www.free6gtraining.com/
Private Networks Technology Blog - https://blog.privatenetworks.technology/
3GPP Packet Core Towards 5G Communication SystemsOfinno
This presentation provides an overview of 3GPP packet core and 5G systems. Some enabler features are outlined, such as network slicing. This presentation was prepared for the 20th Annual International Conference on Next Generation Internet and Related Technologies Net-Centric 2017 that was held at George Mason University.
5th generation mobile networks or 5th generation wireless systems is abbreviated as 5G, and proposed next telecommunications standards beyond the current 4G/IMT-Advanced standards. 5G planning aims at higher capacity than current 4G, allowing a higher density of mobile broadband users, and supporting device-to-device, ultra reliable, and massive machine communications. Its research and development also aims at lower latency than 4G equipment and lower battery consumption, for better implementation of the Internet of things.
5G/NR wireless communication technology overview, architecture and its operating modes SA and NSA. Also an introduction to VoNR and other services overview of 5G network.
The key technologies of 5G namely MIMO and Network slicing are also explained.
Advanced: Control and User Plane Separation of EPC nodes (CUPS)3G4G
This presentation looks at Control and User Plane Separation of EPC nodes (CUPS) which was completed by 3GPP as part of Release 14 specifications and is set to be a key core network feature for many operators.
CUPS provides the architecture enhancements for the separation of functionality in the Evolved Packet Core’s SGW, PGW and TDF. This enables flexible network deployment and operation, by distributed or centralized deployment and the independent scaling between control plane and user plane functions - while not affecting the functionality of the existing nodes subject to this split.
An overview of 5G NR key technical features and enhancements for massive MIMO, mmWave, etc.
Presented by Yinan Qi, Samsung Electronics R&D Institute UK at Cambridge Wireless event Radio technology for 5G – making it work
*** SHARED WITH PERMISSION ***
The new 5G unified air interface is being designed to not only vastly enhance mobile broadband performance and efficiency, but also scale to connect the massive Internet of Things and enable new types of services such as mission critical control that require ultra-low latency and new levels of reliability and security. The new design will unify diverse spectrum types and bands, scale from macro deployments to local hotspots and efficiently multiplex the envisioned 5G services across an extreme variation of requirements.
For more information on 5G technologies, use cases and timelines, please visit us at www.qualcomm.com/5G.
Shared/unlicensed spectrum is important for 5G and is valuable for wide range of deployments from extreme bandwidth by aggregating spectrum, enhanced local broadband to Internet of Things verticals. 5G New Radio (NR) will natively support all different spectrum types and is designed to take advantage of new sharing paradigms. We are pioneering 5G shared spectrum today by building on LTE-U/LAA, LWA, CBRS/LSA and MulteFire.
I have described VoLTE IMS Architecture in simplified way . Are you also finding 3GPP Specs complicated & Complex for VoLTE IMS . It covers Role played by individual Networks Elements as mentioned below :-
# VoLTE SIP Handset : SIP Support , UAC , UAS , User Agent , SIP-UA
# Underlying LTE Network : MME , SGW , PGW , PCRF , HSS , Dedicated Bearer , QCI , Default Bearer
# IMS Core : SIP Servers , P-CSCF , I-CSCF , S-CSCF , TAS , MMTEL , BGw , MRF , ATCF , ATGW , IBCF , MGCF , IM-MGW , TrGW
# Voice Core or PSTN Network for Break-in or Break-out Calls
This presentation is for the people who are interested in mobile release and specifications announced by 3GPP every year, presentation cover all release up to release 12.
5th generation mobile networks or 5th generation wireless systems is abbreviated as 5G, and proposed next telecommunications standards beyond the current 4G/IMT-Advanced standards. 5G planning aims at higher capacity than current 4G, allowing a higher density of mobile broadband users, and supporting device-to-device, ultra reliable, and massive machine communications. Its research and development also aims at lower latency than 4G equipment and lower battery consumption, for better implementation of the Internet of things.
5G/NR wireless communication technology overview, architecture and its operating modes SA and NSA. Also an introduction to VoNR and other services overview of 5G network.
The key technologies of 5G namely MIMO and Network slicing are also explained.
Advanced: Control and User Plane Separation of EPC nodes (CUPS)3G4G
This presentation looks at Control and User Plane Separation of EPC nodes (CUPS) which was completed by 3GPP as part of Release 14 specifications and is set to be a key core network feature for many operators.
CUPS provides the architecture enhancements for the separation of functionality in the Evolved Packet Core’s SGW, PGW and TDF. This enables flexible network deployment and operation, by distributed or centralized deployment and the independent scaling between control plane and user plane functions - while not affecting the functionality of the existing nodes subject to this split.
An overview of 5G NR key technical features and enhancements for massive MIMO, mmWave, etc.
Presented by Yinan Qi, Samsung Electronics R&D Institute UK at Cambridge Wireless event Radio technology for 5G – making it work
*** SHARED WITH PERMISSION ***
The new 5G unified air interface is being designed to not only vastly enhance mobile broadband performance and efficiency, but also scale to connect the massive Internet of Things and enable new types of services such as mission critical control that require ultra-low latency and new levels of reliability and security. The new design will unify diverse spectrum types and bands, scale from macro deployments to local hotspots and efficiently multiplex the envisioned 5G services across an extreme variation of requirements.
For more information on 5G technologies, use cases and timelines, please visit us at www.qualcomm.com/5G.
Shared/unlicensed spectrum is important for 5G and is valuable for wide range of deployments from extreme bandwidth by aggregating spectrum, enhanced local broadband to Internet of Things verticals. 5G New Radio (NR) will natively support all different spectrum types and is designed to take advantage of new sharing paradigms. We are pioneering 5G shared spectrum today by building on LTE-U/LAA, LWA, CBRS/LSA and MulteFire.
I have described VoLTE IMS Architecture in simplified way . Are you also finding 3GPP Specs complicated & Complex for VoLTE IMS . It covers Role played by individual Networks Elements as mentioned below :-
# VoLTE SIP Handset : SIP Support , UAC , UAS , User Agent , SIP-UA
# Underlying LTE Network : MME , SGW , PGW , PCRF , HSS , Dedicated Bearer , QCI , Default Bearer
# IMS Core : SIP Servers , P-CSCF , I-CSCF , S-CSCF , TAS , MMTEL , BGw , MRF , ATCF , ATGW , IBCF , MGCF , IM-MGW , TrGW
# Voice Core or PSTN Network for Break-in or Break-out Calls
This presentation is for the people who are interested in mobile release and specifications announced by 3GPP every year, presentation cover all release up to release 12.
WAP- Wireless Application Protocol
by
Team 11 Presenters:
Suma Pramod Connie Barbosa
Niti Pandey Patrick Cunning
Olga Pavlenko
This ppt contains the topic like,,
WAP Introduction,
WAP architecture requirements,
Architecture overview,
World-wide web model,
WAP model,
Components of WAP architecture,
Sample Configuration of WAP technology,
Usage, Advantages & Disadvantages of WAP,
Wireless Application Protocol (WAP),
Wireless Markup Language (WML),
Generating WML with XSLT,
WAP Emulator.
There is considerable development work going on regarding emergency Applications and in this session attendees were informed about the most recent updates and heard first hand where the latest thinking will take us. They were also informed about standards discussed and produced by international Standards Developing Organisations (SDOs) and that will impact emergency calls handling organisations.
Evolution of Wireless Communication TechnologiesAkhil Bansal
Detailed presentation on Wireless Communication Technologies.
The communication technology has evolved to provide lower latency network, faster and efficient data services.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Generating a custom Ruby SDK for your web service or Rails API using Smithyg2nightmarescribd
Have you ever wanted a Ruby client API to communicate with your web service? Smithy is a protocol-agnostic language for defining services and SDKs. Smithy Ruby is an implementation of Smithy that generates a Ruby SDK using a Smithy model. In this talk, we will explore Smithy and Smithy Ruby to learn how to generate custom feature-rich SDKs that can communicate with any web service, such as a Rails JSON API.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
2. Contents
Migration from GSM to multi-access IP multimedia
• From GSM to multi-access
• SIM/USIM/ISIM support
• Security evolution
• System Architecture Evolution (SAE)
• IMS
• Multi-mode terminals and networks
–
–
–
–
–
Service continuity
Multiple registration
Voice Call Continuity
CS Fallback
Network selection
2
3. From GSM to multi-access
Continuous improvement of access technologies
Provision of services over any access network
Gb
GERAN
Iu
Common Core network
Visited
Network
GPRS Core
Home
Network
vPCRF
SGSN
hPCR F
S7
UTRAN
S3
Evolved RA N
S9
S1
MME
UP E
Rx +
S4
HSS
S6
S7
S6
S5a
Home
Inter AS
Anchor
S8
3GPP
Anchor
Visited EPC
SGi
Home EPC
Op . IP
Serv
(IMS,
PSS,
etc.)
S2
S2
WLAN
non 3GPP
* Color coding: red indicates new functional element / interface
GSM 1800 GSM 1900
GSM 900
GSM ph.1
GPRS
R97
3G
EDGE
R98
R99
Packet
Cable
HSPA
WLAN
Fixed
Rel-5/6
Rel-6/7
WiMAX?
E-UTRAN
?
Rel-8 and onwards
...and let’s make it IP all the way to the terminal !
3
4. SIM / USIM / ISIM support
GSM Ph.2 – R98
R99 – Rel-4
Rel-5 – Rel-7
Rel-8 ->
???
GSM phone
UMTS 3G phone
IP Multimedia
SAE
GSM phase 2
Mandatory SIM
No USIM support
Optional GPRS
(R97 ->)
WCDMA or EDGE
Mandatory SIM
USIM support is:
Mandatory for
WCDMA
Optional for
GSM/EDGE
IMS
Mandatory USIM
No SIM specs
Optional support of
legacy SIM
ISIM support
mandatory for IMS
ME
WLAN (Rel-6)
SAE
USIM mandatory
for SAE access
3G AKA security
SIM access not
allowed any more
No need to update
legacy USIM
IMC as alternative
to ISIM for non3GPP access
4
5. Security evolution
Phase 2 SIM
SIM
2G
AKA
UICC Smartcard, R99 ->
RAND
GSM
security
SRES
Kc
SIM
security
in USIM
SIM
application
in UICC
SIM Appl
USIM Application
2G
AKA
2G
AKA
RAND
SRES
Kc
3G
AKA
ISIM Appl
3G
AKA
RAND+
AUTN
RANDRAND
+AUTN
SRES
Kc
RES
Ck
Ik
RES
Ck
Ik
IMS 3G
AKA in
ISIM
3G AKA
in UICC
Authentication Request (RAND
, AUTN )
SIP 401
Unauthorised
5
6. System Architecture Evolution
(SAE)
•
LTE = E-UTRAN = evolved radio network
– Megabit class data rates
– Short delays
– Short transition from idle to active
•
SAE = System Architecture evolution
– Evolved IP oriented multi access architecture
•
•
•
•
•
•
E-UTRAN integrates only to SAE, A/Gb or Iu not possible
Strongly IP based PS only network
SAE covers both 3GPP and non-3GPP access technologies
Seamless roaming between E-UTRAN, 2G and 3G (tight interworking)
Loose interworking with non-3GPP accesses
Currently work is progressing on GTP for intra-3GPP mobility and
IETF based mobility for non-3GPP mobility
– The main Architecture specifications 23.401 and 23.402 frozen in June 2008
– Protocol work is ongoing with the goal to freeze it in December 2008
6
7. SAE/LTE Deployment
• Deployments are expected to start with overlapping
cellular coverage
– E-UTRAN overlapping with legacy 3GPP GERAN / UTRAN coverage
– E-UTRAN overlapping with legacy 3GPP2 coverage
– Multi-mode networks and terminals
• E-UTRAN is a packet-only radio with no CS capacity
• Initially E-UTRAN is foreseen as “islands” in the sea of
legacy cellular access
–
–
–
–
Mobility between E-UTRAN and legacy access is required
Mobility between PS and CS domains is required
Multi-mode terminals expect to use PS coverage where available
Desire to keep the connectivity and services
7
8. IP Multimedia Subsystem
(IMS)
•
•
PS domain IP Multimedia service platform
Based on open IETF standards
– End to end IP (SIP)
– Multi access
Internet
• GPRS, I-WLAN, fixed xDSL, Packet Cable defined
• More access technologies to follow...
Find & route
to destination
PSTN
IP
Multimedi
a
Core
Circuitswitched
network
( 2G or 3G )
IP
connectivity
User data
( GPRS,
3G,...)
Any IP connectivity
(3G, WLAN,...)
End-to-End IP
services
8
9. Common IMS
•
3GPP members, 3GPP2, WiMAX forum, ETSI TISPAN and CableLabs
contribute to 3GPP common IMS specifications
– Different requirements are supported in common implementation
•
All IMS specifications are harmonized to 3GPP specifications
– Common parts are defined in 3GPP specifications only
• Core IMS entities (CSCFs, AS, UE IMS client,...) + agreed common functions
– Other organisations either reference or re-use 3GPP specification as it stands
– Any changes or additions in the Common IMS area are made in 3GPP
• All 3GPP members can contribute on their favourite work items
• Ongoing work initiated by 3GPP members, CableLabs, 3GPP2 and ETSI TISPAN
– The scope and coverage of Common IMS have been agreed by the SDOs
•
Common version of IMS specifications in Rel-8
– Business or architecture specific additions to 3GPP Common IMS are possible
outside the agreed Common IMS area
9
10. Multi-mode,
Service continuity
• Call control protocols
– E-UTRAN is a PS only radio, speech and other services are IMS based
– PS domain IMS uses SIP protocol for call control (3GPP TS 24.229)
– CS domain uses Call Control defined in 3GPP TS 24.008
• Voice Call Continuity
– Domain transfer of ongoing call
– Typically from E-UTRAN to 2G or 3G access
• CS fallback
– Paging the mobile in E-UTRAN to start CS service in 2G or 3G access
– Not an E-UTRAN service, but fallback to existing service via 2G/3G
• IMS service continuity
– IMS service between E-UTRAN and other PS only, such as WLAN
• IMS Centralized Service Control (ICS)
– Common telephony services between CS and PS domain
10
11. Multi-mode,
IMS registration in Rel-7
•
•
When S-CSCF detects that the same UE registers again, it considers
this as an update and overwrites existing registration
In some cases it may not be possible to de-register when changing
from one access technology to another
– UE might lose radio coverage before being able to de-register
•
S-CSCF detects that the registration is from the same UE based on the
same privateID, which is practically a device-ID
E (privateID-A)
S-CSCF
REGISTER 1 (privateID-A, IPaddress: 1.2.3.4) registered with 1.2.3.4
UE
oss of
radio
REGISTER 2 (privateID-A, IPaddress: a.b.c.d)
UE registered ONLY wit
a.b.c.d – REGISTER 1 got
overwritten with REGISTE
11
12. Multi-mode,
IMS Multiple registration, Rel-8
•
•
•
A UE is able to register the same public user identity with multiple IP
addresses at the same time
Used e.g. for IMS Service Continuity (e.g. handing over from I-WLAN
to GPRS)
No gap in reachability of the mobile
HSS
GPRS
IP: 1.2.3.4
P-CSCF 1
S-CSCF
I-WLAN
IP: a.b.c.d
P-CSCF 2
user1 / 1.2.3.4 / UE-A
user1 / a.b.c.d / UE-
UE-A
12
13. Multi-mode,
Single Radio Voice Call Continuity
Transfer from E-UTRAN to GERAN with active call
(not all entities shown)
HO command
MME
E-UTRAN
IMS
HO required
measurements
relocation
request
relocation
response
session
transfer
PLMN serving
remote user
MSC server
prepare HO
HO complete
2G or 3G
MSC
13
14. Multi-mode, CS fallback
Directing the UE from E-UTRAN to 2G/3G for CS service
MME
E-UTRAN
paging
SETUP
paging
PLMN serving
remote user
call setup
SETUP
paging resp.
2G or 3G
MSC
14
15. Multi-mode,
Network selection
•
Network selection comprises two parts
– Network operator selection (the goal, based on commercial agreement)
• Home operator determines which visited operators are preferred
– Access technology selection (the means, based on technical criteria)
• Serving visited operator determines access technology, frequency band and cell
•
•
•
•
Multi-mode phones supporting many access technologies are a new
challenge
Network selection within each technology is defined for 3GPP and
non-3GPP accesses
The combination of multiple technologies is undefined
Two approaches are foreseen in Rel-8
– 3GPP network selection procedures are extended to cover any non-3GPP
system that supports ITU-T defined concepts of MCC and MNC
– For others the ANDSF can (optionally) download network selection policy
• Access technology preference, policy for changing access technology, etc.
•
•
•
MCC = Mobile Country Code
MNC = Mobile Network Code
ANDSF = Access Network Discovery and Selection Function
15
16. Multi-mode network selection,
Outbound roaming example
•
•
HPLMN is not available
Prioritized VPLMNs are
listed with no associated
RAT in PLMN selector
with access technology:
–
–
–
•
VPLMN5 is not
available
VPLMN1 is available
VPLMN2 is available
VPLMN2 is selected via
2G, 3G or E-UTRAN
–
•
HPLMN has
not
configured
RAT
priority
for this
VPLMN
–
VPLMN1
CDMA
VPLMN5
VPLMN2
VPLMN1
VPLMN1
USIM configured RAT
preference possible
After PLMN selection
normal idle mode is
resumed
–
PLMN
Selector
(USIM):
Cell & RAT may change
within the selected
PLMN
Background scan for
higher priority network
HPLMN
VPLMN1
E-UTRAN
?
VPLMN2
UTRAN
VPLMN2
GERAN
VPLMN2
E-UTRAN
RAT = Radio Access Technology, PLMN = Public Land Mobile Network
VPLMN
2
16
17. Thanks f or your
at t e nt i on !
M e i nf or m i on at
or
at
w w 3gpp. or g
w.
17
18. Ar chi t e ct ur e Anne x:
3GPP and non- 3GPP
acce s s ar chi t e ct ur e
18
19. SAE architecture (23.401)
NAS signaling+sign.
security
HSS
Mobility between 3GPP
ANs
Idle mode UE
reachability
PCRF
S
7
S6a
PDN
Gateway
P-GW and S-GW
selection
SGSN selection at HO
HPLMN
Rx
+
SGi
•Operator’s IP
Services
(e.g. IMS, PSS
etc.)
Authentication
Bearer establishment
VPLMN
UTRAN
S8
Packet screening &
filtering
SGSN
GERAN
S1-MME
Charging support
MME
Legal interception
Packet routing
S11
S10
E-UTRAN
S1-U
User plane
security
(UMTS AKA)
S4
Mobility anchor
Signaling
security
(UMTS AKA)
“LTE -Uu ”
Policy enforcement
S12
S3
UE
UE IP address
allocation
Serving
Gateway
Idle mode
packet
buffering & DL
initiation
Legal
interception
19
20. SAE non-3GPP access
(23.402)
HSS
Wx*
S6a
S4
2G/3G
SGSN
PCRF
S3
S2 for
connectiv
ity via
non-3GPP
acces
Rx+
S7
MME
Rx+
S11
SGi
S1-MME
Operator’s IP
Services
S10
Serving
Gateway
EUTRAN
S5
S6c
S1-U
Trusted IP
access
directly to
P-GW
Untruste
d IP
access via
ePDG
(e.g. IMS, PSS etc.)
PDN
Gateway
S2b
Wm*
ePDG
S2c
3GPP AAA
S2a
Server
Wn*
HPLMN
Non-3GPP
Networks
Trusrted*
Trusted
Non-3GPP IP Access
Wu*
Non-3GPP IP
Access
or 3GPP Access
UE
Untrusted
Non-3GPP IP
Access
UE
Wa*
Ta*
* Untrusted non-3GPP access requires ePDG in the data path
20