Post on 26-Mar-2020
Hopping or Step by Step?— Towards SA & Full Capable 5G Network
Jason TuPrincipal Scientist of NFV/SDN ProductsZTE Corporation
Island Hopping Saved Time and Lives in World War II
• End the Pacific War at least a year earlier.• Millions of lives have been saved, including U.S. and Japanese soldiers.
The Differences Between SA and NSAOption 7x: Non-
Standalone, LTE assisted
5GC
eLTE NR
EPC
LTE NR
Option 3x: Non-Standalone, LTE assisted
5GC
NR
Option 2: Standalone NR, 5GC connected
SA is aggressive choice for 5G continuous coverage in the initial stage.
SBA E2E Slice Flow Based QoS CUPS FMC
Not Support
Support3GPP defined SBA
FlexibleEnhanced QoS
mechanism。
NF1 NF2
NSA
Key Features
SA
Not Support
SupportMulti slice selection
Multi slice access
Not Flexible Limited Support Not Support
SupportGuaranteed service
continuity
SupportAccess by N3IWF,
unified authentication
Two Paths to Target Full Capable 5G Network from 4G
Considering upgrading cycle, evolution cost and user experience, route 2 is suggested.
pEPC
vEPCexpansion
+
vEPC
Route 2: One stop deployment of convergent 5GC, upgrading to convergent sliced core smoothly
N26
+
pEPC
pEPCexpansion
pEPC
5GC Trial +pEPC
ConvergentSliced Core
IoT networkHuman network
Industrial network
5GC Trial Convergent 4/5G core
2018 2020 2022~2019
Route 1 Route 2 √Network upgrading Long (upgrade twice) Short (upgrade one time only)
Evolution cost Low (reusing is possible) Low (partly reusing)
User experience Bad(frequent upgrading) Good(convergent core, no impact on existing network)
Convergent 4/5G core
Route 1: vEPC and 5GC are gradually commercial launched and finally upgraded to convergent sliced core
NSA is Conservative for Rolling Development
NSA terminal already commercial launched.
Standards
• eMBB for initial 5G scenario, e.g. 4K/8K Video, AR/VR.• Dual-connection for traffic diverting for Hotspot.
Service
• less investment and faster 5G NR hot spot deployment• Just upgrading eNB , EPC and bearer network
Network
Earlier than SA (NSA standards froze in Dec 2017).
Terminal
NSA is more mature, it can be commercial launched as a temporary solution for eMBB scenario.
NSA Faces Many Challenges
• 4G eNB upgrading• EPC upgrading• Bearer network upgrading
Upgrading
• High cost• Low performance• High power consumption• Limited 5G new services
Terminal
• Hard to guarantee performance in multi-vendor environment
• Hard to conduct interworking between different vendors
Interworking
• Hard to select anchors• Complex neighbor cell configuration• Hard to use bearer policy• Trade-off in uplink power control • High overhead of mobility management• Hard to evolve
Networking
To target network ,NSA is more complex than expected.
Optimization
• One time to optimize 2 networks• 4/5G is tight-coupled, hard to
improve KPI
HSS
PCRF
GW-C
GW-U
MME
PCF
SMF
UDM
AMF
UPF
EPC 5GC
Converged User Data
Converged Policy
Converged Forwarding
N26Converged Control Support both SA and NSA, no repeated
upgrade Reusable resource
DevOps-based rapid service onboarding
AI-based self-optimization & autonomy
2G/3G/4G/5G/Fixed full convergence
Reduce signaling & latency
KPI
20%
Investment
40%
Efficiency
2X
Fixed2G/3G 4G 5G
Overlapping Investment
Multiple Cores
Complicated O&M
Common Core
One Core for All - Common Core
vEPC on AWS Public Cloud5GC SA lab test
1st
5G E2E live demowith commercial devices
1st
5G MOU
1st
3GPP
R15 (Phase 1) R16 (Phase 2) 5G Evolution
2018 2019 2020
Cloud 5G Core
Cloud NativeMore
Features
• 2G/3G/4G/5GConvergence
• FMC
• mMTC, uRLLC• V2X• …
• SBA• Slicing• CUPS/MEC
vEPC
NSA Access
CommonCore
PoC CommercialPoC Commercial
5G Common Core Roadmap
Multi-dimensional association analysis on how to rapidly find out the root cause
Horizontal alarm association analysis for
between NEs and professional networks
Cross-layer alarm association analysis horizontally
RAN Core APPs
Physical Layer
Virtualization Layer
Service Layer
Data collection, adaptation, and warehousing
Resource relationship
Alarm association analysis engine
Alarm data
Rule experience library
AI rule engine
1. Reduce the alarm pressure by 90% by using the flash rule and alarm association
2. Promote the alarm analysis efficiency by 40% because the skill requirement is reduced significantly
3. Build in the alarm association rule library. The number of rules is more than 1,000.
1. AI mining alarm association rules
a) Alarm data multi-dimensional slice
b) Association algorithm improvement, automatic selection
2. Cross-layer alarm tag association
a) Mark the fault tag to the L3 alarm
b) Make unified collection of alarm and resource data
c) Automatically the cross-layer alarm association relationship through the analysis engine
Capability
Benefits
AI technologies are realized for the horizontal/vertical alarm association
Al Based RCA to Promote O&M Efficiency
RCA: Root Cause Analysis
Carrier DevOps for Digital Transformation
Develop Build Package Test Deploy/Upgrade Operate
Blueprint Assemble
ResourceAssignment
SLA/KPIDefine
One keyLaunch
OnlineConfig
SandboxTest
1
2
46
1
2
3
4
5
Slice Wholesale Solution for B2B2C
25+ global mainstream operators cooperate to promote 5G commercial scale
-3rd in global contribution-Experts invest 30+
- 4th in global contribution- Experts invest 10+
- 13th in global contribution- Experts invest 30+
Industry application
Camera AGV
Sensor Robotic arm
Industry control management
Terminal status
detection
Slice monitorin
gSLA
indicator detectio
n
5G Slice Store
Slicing management
CSMF
OSS/BSS
Open Capability (API Gateway)
SLA Assurance
NFVINFVI
Orchestration
NSMF(network slice management function)
CN sub-slice management
TN sub-slice management
RAN sub-slice management
Design
Slice Orchestration System
SMF
UPF
AMFD
U CU
Carrier operating system
Portal
MEC
NEF
WAN,LAN
RAN TN CN
Standard Slice High
Priority Slice(Low latency & High reliability)
High Priority Slice(High Bandwidth)
High Priority Slice(Massive Connection)
Customized on demand
Automaticworkflow
SLA assurance
Intelligent optimization
Safety isolationEnd-to-end
The Leader of vCN Commercialization
Large-Scale NFVI + vEPC
Largest vHLR/vHSS
1st 5G-Ready Virtual Core
1st 5G-Oriented Containerized vEPCvIMS Deployed by the Carrier DevOps Builder
vCS on 3rd Party NFVI
Unified Network Resource Mgt. Platform
450+
Cloud Native NFV & SDNCoordination
TelcomEnhancement 5G Oriented
Takeaway
Multi-level AI-driven
Intelligent E2E Network slicing
Inter-domain Association
RCA (Root Cause Analysis)
2G/3G/4G/5G/Fixed Convergence
SW & HW Acceleration
SBA & SBA+
Hybrid NSA & SA
2G 3G 4G5G
Common Core for SA & NSA & Combination