a hyper-cellular architecture for 5g and beyond...control signaling, e.g. paging, system info.,...
TRANSCRIPT
-
A Hyper-Cellular Architecture for 5G and Beyond
Tsinghua University, Beijing, China
June 01, 2018 @ Waseda
Zhisheng Niu
1
-
“People always over-estimate things for
3 years scope, but under-estimate
things for 10 year scope” – Bill Gates
2
-
• not just about data rate (throughput or spectrum-efficiency )
– Not a simple extension of 4G, as from 1G to 4G
• but more about connectivity, reliability (latency & security),
and energy-efficiency
5G for a Hyper-connected Society
3
eMBB
mMTC uRLLC
-
5G for Personalized Service
• Personal Comm Personalized Service (mG: my Generation)
• Diversified traffic requests personalized services & smart
networking
• From 3A to 3R: Right time, Right place, and Right service
Au
ton
om
ou
s C
on
tro
l
Understanding of Situation
Mobile/IM (2004)
Location
Presence
Self-X Infrastructure (2020)Self-Managing
Self-Configuring
Self-Organizing
Self-Optimizing
Self-Protecting
Self-Healing
Self-Adapting
X-Aware Service(2010)Location-Aware
Context-Aware
Power-Aware
Situation-Aware
Autonomous Infrastructure
4
-
• What’s 5G?
In addition to SE, more about connectivity, latency, reliability, and EE
It’s EVERYTHING, like ATM (Asynchronous Transfer Mode)!
5G: A Networking Hype?
5G4G3G2G1G
5G
5G
SE (data-rate)
EE
Latency
Reliability
Connectivity
Everything that 4G couldn’t provide
“Everything should be made as simple as
possible, but not simpler” (Albert Einstein)
5
-
Everything is Nothing
• Nothing is Everything
5G (whatever can be done by 2020) can probably only be eMBB and MTC
mMTC/uRLLC and higher EE need a paradigm shift
1G, 2G, 3G, 4G, 5G, 6G
Zhisheng NIU / Tsinghua University 6Super-Duper(eMBB, uRLLC)
Down-dirty(mMTC)
Probability of Success
Stuck in the middle(e.g., ATM)
6
Capacity-oriented
2000Coverage-oriented
Tra
ffic V
olu
me o
r En
erg
y C
on
su
mp
tion
Time
2G
Energy Efficiency-oriented
2010
3G3G+
4G
Traffic
Volume
2020
Energy
Consumpti
on
5G5G+
?
Can we really SMILE?
(Send More Information bits with Less Energy)
Aren’t we too ambitious?
Can we have cake and eat it?
-
Looking back: What made today’s success?
• Cooper’s Law: “The data rate available to a wireless device
doubles roughly every 30 months” (Martin Cooper)
– This has held for over 50 yrs, leading to 1,000,000x increase
25x 5x 5x
1600x
0200400600800
10001200140016001800
wider spectrum dividing thespectrum intosmaller slices
bettermodulation
scheme
reduced cellsizes
Wireless Capacity…
Source: William Webb, Ofcom
(Spectrum Reuse,
Cell Densification)(Multiplexing)
7
-
Cellular was invented for spectrum-efficiency
But, is it really energy-efficient? Is it smart enough to support massive M2M connections and uRLLC?
8
-
Energy Waste in Existing Cellular
Traffic data from 319 HSPA cells in a European capital
city measured from Jan. 1-22 2009 (Ericsson)
80% of the BSs are quite lightly loaded for 80% of the
time, but still consume (waste) a lot of energy
P. Frenger and M. Ericson, “Assessment of alternatives for
reducing energy consumption in multi-RAT scenarios,” IEEE
VTC Spring, Seoul, Korea, May 2014
Existing cellular is neither smart nor green9
-
Hyper Cellular: Deal with the Dilemma
? Smaller cellsLarger cells
Less signaling overhead
Global optimization
Smart Coverage-on-demandDensely deployed
Green
decouple
C-plane Larger
D-plane Smaller
Hyper Cellular Architecture
Capacity-hungry Apps (e.g., mobile videos)
Higher SE
Higher EE
GREEN
Control-intensive Apps (e.g., M2M, IoT)
Faster Connectivity
Higher ReliabilitySMART
U-shape Traffic
Datarate
Vo
lum
e
11
-
Hyper Cellular for Green and Smart
Data BS
UE with High-Rate
Requirement
Control Network Layer
Synchronization/Broadcast of System Information/Paging/Multicast
Data Network Layer
Syn./Unicast
Data Signaling, e.g. user data packet
Control Signaling, e.g. paging, system info., high-layer control info., etc.
Control
BS
Layered
RAN
Data BS
UE with Low-Rate
Requirement
For ubiquitours network
access provision
Dedicated for high-rate user
data transmission
12
-
– 1G (’80s): Analog, Voice, FDMA, Macro (Coverage-oriented)
– 2G (’90s): Digital, Voice, TDMA, Macro (Coverage-oriented)
– 3G (’00s): Digital, Data, CDMA, Macro/Micro (SE-oriented)
– 4G (’10s): Digital, Video, OFDMA, Micro/Femto (SE-oriented)
– 5G (’20s): Digital, Video, OFDMA, Hyper (SE/EE-oriented)
13
5G: A Paradigm Shift of Cellular Architecture
BDMA
SCMAM2M
Z. Niu, S. Zhou, S. Zhou, X. Zhong, J. Wang, “A Hyper-Cellular Paradigm for Globally Resource-
optimized and Energy-Efficient Networks (GREEN)”, Science in China, Sep. 2012 (in Chinese)
13
-
From Dr. Wen Tong’s Talk at IEEE ICCC’16
14
-
Highlights of the Research Progress
17
National “973 Project” on GREEN (2012-16)- Tsinghua University (PI)- BUPT/UESTC/SEU/BUAA/ZJU/USTC- China Telecom- Huawei