gsm umts lte inter-worki

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Slide 1Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
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Direction of the slides
Generally, only PDF file is to be submitted to customers.
If any questions, comments or concerns, please contact the authors or the modifiers.
Basic Information:
Target audience:
Time: - up to 45 min
Author: - Wang Wei (ID# 53756) / Chen Zheng (ID# 00139370)
Version: - V1.0 (02 Sep, 2009)
Content / Main Opinion:
This PPT focus on why inter-working solution is needed and how it will bring benefit to operators, Huawei’s understanding and solution will be stated in following aspects: .
Why we need inter-working? Analyze the demand from industry and operator aspects;
What scenarios are included in inter-working?
Pros and Cons of all 3GPP standard & non-standard inter-working solutions;
Highlight Huawei’s special voice over LTE solution and its unique value;
Summary: how inter-working help operator solve their challenges.
This page should be deleted before presentation
Please pay attention on ‘forbidden to submit to customer’ pages!
HUAWEI TECHNOLOGIES CO., LTD.
www.huawei.com
Huawei GSM/UMTS/LTE Inter-working Solution
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Content
This slide has 3 parts.
Part1 : By analyzing mobile market trend and challenges, with the limitation of UE and spectrum, we give the conclusion “LTE will forces on hot spot in initial phase,
So many different technologies will co-exist .
Part2 : Introduce the industry solution and Huawei innovative solution, we try to get out the conclusion that Huawei has more advanced or innovative solution to solve the interworking.
Part3 : give the interworking strategy in different phase, what benefits can Huawei solutions bring to operators.
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Trend of global mobile market
Technologies of different generations will co-exist for a long time;
Voice service keeps creating huge revenue for operators;
Main revenue growth will come from data services;
Revenues (US$bn)
Source: Informa Telecoms & Media
Content: Introduce the trend of global mobile market,
1 Technologies of different generations will co-exist for a long time
2 Voice service keeps creating huge revenue for operators;
3 Main revenue growth will come from data services;
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
LTE Network Challenges
Provider
Flexible Third Party Cooperation
*
Content: There are some challenges for LTE deployment, can be summarized into below 4 categories
1, Industrial maturity, there are
2, LTE deployment will affect existing basic voice and SMS service, how to ensure smooth multi network inter-operation
3, how to control the cost of LTE deployment, save site construction cost, save backhaul expansion cost, save O&M cost for multi-network
4, How to make the LTE investment profitable, resolve the operators problem, create more profit with LTE technology,
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
LTE Deployment Strategy
Urban / rural in
expanding / mature phase
More spectrum available
Convergent PS Core
Load sharing strategy
Service based mobility
Limited spectrum options
Independent EPC to minimize impact on CN
Keep service continuity via 2G/3G network
No impact on the stability of 2G/3G network
Enable seamless service experience between LTE and G/U systems.
Hot spot / dense urban in initial phase
Content: Introduce the LTE deployment strategy in different phase
“Independent EPC”MMEGW
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Impact of LTE introduction
Change on existing NE;
High end user experience
Service continuity and diversity;
Focus on hotspot and dense urban in initial phase;
According to the industrial maturity , when the operators deploy the LTE network, they concern on the four factors, and most of these concerns can be solved by GUL interworking solution.
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Content
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Target of GSM/UMTS/LTE Inter-working
Avoid the impact on the GSM/UMTS network stability;
Voice service introduced;
Introduce the target of interworking in different phases.
In this section, we divide the whole package into 3GPP standard solutions and Huawei Special solution. When giving customer a overall understanding about GUL interworking solution, we also need to highlight our special solution which can bring unique value for operator and subscribers.

Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
GSM/UMTS/LTE Inter-working Scenarios
CS Fall Back
This slides shows us all scenarios of interworking.
There are only two status for an UE in LTE network, Idle and RRC connected, and in each of them, we will meet different needs of interworking.
* PS handover: adoptable for G/L and U/L interworking;
** CCO (eNACC and non eNACC): only for G/L interworking;
The Comparison of PS Handover and CCO:
1The Interrupt time of the PS handover is shorter, Better User experience (HO).
2towards network and UE side, the method of the CCO than the PS handover is simpler to perform (CCO).
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Section 1, Camping and Cell Reselection
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
UE Camping & Cell Reselection Principle
GSM/UMTS/LTE multi-mode UE camp on LTE network preferentially in idle mode;
Cell reselection of LTEGSM/UMTS is triggered only when UE is out of LTE coverage area;
Cell reselection of GSM/UMTSLTE is triggered when UE enters the LTE coverage area;
LTE Hotspot
GSM/UMTS Coverage
Cell Reselection from GSM/UMTS to LTE network
Cell Reselection from LTE to GSM/UMTS network
Introduce the principle of idle mode hand reselection, LTE has the highest priority.
UE will reselect GU network when the UE is out of LTE converge. Once UE gets back to LTE coverage, it will reselect to LTE network.
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Priority and Threshold
UE Individual priority;
Default Common Priority is: LTE>UMTS>GSM;
Threshold and Measurement:
Measurement parameter:
SNonServingCell: Signal quality of target reselection cell;
Cell Reselection Strategy:
SServingCell <Threshserving,low & SNonServingCell> Threshx,low
GSM/UMTS->LTE (Low to High):
SNonServingCell> Threshx,high
LTE
GSM
UMTS
This slides show Priority and Threshold of Cell selection and reselection, which determines when and by measuring of what parameters, one multi-mode UE will trigger the selection/reselection and the request will be approved.

Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Section 2, Data Service Inter-working
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Data Service Initiation
LTE UE with the highest priority when UE attached in overlaid RAN area;
eUTRAN is preferable to provide data service;
Minimum impact on the legacy GSM/UMTS network;
Guarantee data speed of LTE subscribers;
LTE
Coverage
HO is allowed in case of load pressure;
Data service request
LTE network bears service preferably;
Principle
Benefit
Main principle of data service activation a still UE in GU/LTE overlaid coverage, with different camping situation. LTE network is preferable for providing data service.
LTE
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Data Service Mobility Solution
UE handovers to GSM/UMTS;
Data service handover
Ongoing data service is beared by G/U;
UE moves into LTE coverage area, two options for data continuity:
Service handover to LTE directly;
Service is still provided by G/U network, when service ends, UE will camp on LTE network by cell reselection;
Support cell reselection between eUTRAN and GERAN/UTRAN;
LTE to GSM/UMTS PS handover based on coverage in initial phase;
Guarantee users’ data service quality when handover occurs;
Keep network performance stable and service continuity;
Principle
Benefit
Main principle of data service handover based on coverage for a moving UE with data service.
Pay attention to handover from GU to LTE:
GSM,UMTS->LTE: option1: when the UE supports Common Priority LTE>UMTS>GSM, Service handover to LTE directly .
option2: when the UE does not support Common Priority LTE>UMTS>GSM ,Service is still provided by GU network, when service ends, UE will camp on LTE network by cell reselection.
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Flow Chart of Data Service Handover
Data service handover procedure:
New Service Bearer
The source eNodeB decides to initiate a handover to the target access network. MME sends relocation request to G/U SGSN;
G/U SGSN sends relocation request to target BSC/RNC for resource preparation; MME inform S-GW to prepare handover.
eNodeB informs UE to handover from eUTRAN to G/U network. UE apply reconfiguration in G/U network;
BSC/RNC allocate resource for UE and MME releases occupied resource of eNodeB.
HO request
Relocation request
Relocation request
Gn
The simple flow chart of data service handover from LTE to GU network, based on coverage.
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Section 3, Voice Service Inter-working
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Mobility Tactics for Voice Service in LTE
CS Fallback
Others
Solution
LTE UE’s voice service will be pushed back to 2G/3G CS domain; A handover procedure from LTE to 2G/3G is performed in order to allow the UE for handling over 2G/3G network;
LTE UE uses voice over IMS when being under LTE coverage; Handover from LTE to 2G/3G CS domain is triggered when UE is leaving the LTE coverage (SR-VCC mechanism); Voice calls continue over 2G/3G CS domain;
Some industry players are investigating other choices (e.g. P2P VoIP, VoLGA Forum); however there is no guarantee that it will be standardized by 3GPP
Briefly introducing main stream solution to provide voice service in an LTE network.
Attention:
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
Top right corner for field-mark, customer or partner logotypes. ----------------
The following nine groups of colors are an example of how our design colors can be used, please take note…