end-to-end network slicing - openairinterface · 2018-06-20 · hetnets in the future: based on...
TRANSCRIPT
End-to-End Network Slicing
Xiaodi Lu
Joint Laboratory of Information & Energy Transfer Network
Xidian University
China
Outline
Background
OAI-based End-to-End Network Slicing
Experiment
Conclusion
Prospect and future work
Background
Wide coverageGbps data rate
Ultra low latency ：millisecond E2E delay
IoT：Supports numerous IoT devices
eMBB
mMTCuRLLC
No one network can meet all the requirements!
Tight coupling
Distributed deployment of BS
Fossilized network architecture
SDN：C/U SeparationCentralized control
NFV：Flexible resource allocation
Network Slicing：Customized services
Reference Architecture
NFV
fronthaul
RRH1
RRH2
RRHn
...
UE RANTransport
network CN
InternetBBU
fronthaul
Network slice1: eMBB
Network slice2: mMTC
Network slice 3: uRLLC
MME
P-GW
S-GW
Data Center
RAN slice Management CN slice Management
Infrastructure layer
Netw
ork slicin
g lay
erM
anag
ement lay
er
RRH3
fronthaul
fronthaul
VIM VNFM VNFO
Network slice Management
HHS
OAI-based End-to-End Network Slicing
Internet
Core Network Control Plane
（Docker）
S1-C S6a
SGi
vS
witch
Docker
Docker
uRLLC-eNB
eMBB-eNB
vS
witch
USRP
B210
vHSSvMME
OVS
eth0
eth
1eth
1
USB
3.0
USB
3.0
Radio Access Network Slices
ManagementCore Network Slices Management
eMBB-slice User Plane（Docker）
USRP
B210
UE
UE
eMBB slice
uRLLC slice
X86 Server1 X86 Server2
vS-GW vP-GW
S1-U#1 S5/S8
uRLLC-slice User Plane
（Docker）
vS-GW vP-GW SGiS5/S8
S1-U#2
eth
0
S1-C
S1-C
Internet
eMBB
Server
uRLLC
Server
User data
• Software
• Virtualization
• E2E logical network
• logically integrity
• Isolation
• Customization
Experimental scene
PS: This is just a composed picture for watching conveniently.
Experimental results
0 60 120 180 240 300 360 420 480 540 60018
20
22
24
26
28
30
32
34
36
Time(s)D
ela
y(m
s)
eMBB slice
uRLLC slice
10 20 30 40 50 60 70 80 900
10
20
30
40
50
60
70
Traffic load (Mbps)
Dow
nlin
k r
ate
(M
bps)
uRLLC slice
eMBB slice
Conclusion
eMBB slice
Allocating more network, computing and storage resources
uRLLC slice
Deploying the core network’s user plane to the eNB side
Prospect and future work
Slice management
Refine slices
We are here to study, share our tiny work about OAI and
communicate with you.
RAN Slicing-based Handover Scheme in HetNets
Xu Dong
Joint Laboratory of Information & Energy Transfer Network
Xidian University
China
Background
Mobile communications in the future
Increasing data services
Diverse servies and equipment
Multiple HetNets fusion
Disadvantages of traditional RAN
Distributed network deployment
C/U tightly coupled
Software and hardware tightly coupled
HetNets in the future:
Based on SDN/NFV
Network slicing is the main feature
Multiple networks integration
The key issue:
Enable users to enjoy the consistent
customized services during handover
between HetNets
System model
Three parts：
Application layer
Control layer
Infrastructure layer
Features:
CUPS
Hierarchical control model
RAN slicing
Heterogeneous Wireless Network
Internet
Gateway
Campus Network
Control Signaling User Data
VAP
Switch
Global controller
vUeNB
...
...
Northbound Interface
Southbound Interface
Application Layer
Global controller
Local controller
Infrastructure Layer
Hierarchical Control Layer
Intermediary Interface
LTE
Controller
(vCeNB)
WLAN
Controller
Gateway
Move
Handover process
UE Global Controller
Control Signaling Interaction
Data Transmission
Database UpdateReal-time Monitor
Handover Decision
Manager Update
handover_req
handover_ack
RAN_slice_creat_req
RAN_slice_creat_ackRAN Slice Creation
Connection Release
Connection Establishment
Data Transmission
LTE
ControllerLTE UeNB
Target NetworkSource Network
WLAN
ControllerAP
handover_req
handover_ack
RAN Slice Dispatch
Real-time Monitor
Testbed Experimental parameters
LTE WLAN
Global
ControllerLTE
Controller
(vCeNB)
vUeNBWLAN
ControllervAP
Open-
source
Software
srsLTE Floodlight OpenWrt Floodlight
Protocol Socket OpenFlow Socket
Operating
SystemVMware Docker VMware Docker VMware
General
Hardware
x86 serverUSRP
N210x86 Server AP x86 Server
Experimental scene
The handover between LTE/WLAN video slice. Performance measurement of the handover scheme
Experimental results
0 5 10 15 20 25 30 35 400
1
2
3
（a）
Rate
(M
bp
s)
0 5 10 15 20 25 30 35 400
50
100
（b）
LT
E C
PU
(%
)
0 5 10 15 20 25 30 35 400
5
10
（c）
WiF
i C
PU
(%
)
vCeNB
vUeNB
Time (s)
Time (s)
Time (s)
T
（a）
（b）
Contact us
We are sincerely looking forward to cooperating with you.
Web: http://ien.xidian.edu.cn/Joint Laboratory of Information & Energy Transfer NetworkXidian University
2 Taibai South Road, Xi'an, Shaanxi, 710071Mobile:+86 13891922062Mailto: [email protected]
Thank you!