A Hyper-Cellular Architecture for 5G and Beyond

Transcription

1 A Hyper-Cellular Architecture for 5G and Beyond Zhisheng Niu Tsinghua University, Beijing, China June 01, Waseda 1

2 People always over-estimate things for 3 years scope, but under-estimate things for 10 year scope Bill Gates 2

3 5G for a Hyper-connected Society 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 embb mmtc urllc 3

4 Autonomous Control 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 Autonomous Infrastructure Self-X Infrastructure (2020) Self-Managing Self-Configuring Self-Organizing Self-Optimizing Self-Protecting Self-Healing Self-Adapting Mobile/IM (2004) Location Presence X-Aware Service(2010) Location-Aware Context-Aware Power-Aware Situation-Aware Understanding of Situation 4

5 5G: A Networking Hype? What s 5G? Everything that 4G couldn t provide In addition to SE, more about connectivity, latency, reliability, and EE It s EVERYTHING, like ATM (Asynchronous Transfer Mode)! Latency 5G Connectivity 1G 2G 3G 4G 5G SE (data-rate) EE 5G Reliability Everything should be made as simple as possible, but not simpler (Albert Einstein) 5

6 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 Probability of Success Zhisheng NIU / Tsinghua University 6 Down-dirty Stuck in the middle Super-Duper (mmtc) (e.g., ATM) (embb, urllc) Aren t we too ambitious? Can we have cake and eat it? Traffic Volume or Energy Consumption 2G 2000 Coverageoriented 3G 3G Capacityoriented Traffic Volume 4G Energy Consumpti on? 5G 5G Energy Efficiencyoriented Time Can we really SMILE? (Send More Information bits with Less Energy) 6

7 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 Wireless Capacity 25x 5x 5x wider spectrum dividing the spectrum into smaller slices (Multiplexing) better modulation scheme 1600x reduced cell sizes (Spectrum Reuse, Cell Densification) Source: William Webb, Ofcom 7

8 Cellular was invented for spectrum-efficiency But, is it really energy-efficient? Is it smart enough to support massive M2M connections and urllc? 8

9 Energy Waste in Existing Cellular 80% of the BSs are quite lightly loaded for 80% of the time, but still consume (waste) a lot of energy Traffic data from 319 HSPA cells in a European capital city measured from Jan (Ericsson) 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 green 9

10 Volume Hyper Cellular: Deal with the Dilemma Control-intensive Apps (e.g., M2M, IoT) SMART Faster Connectivity Higher Reliability U-shape Traffic Datarate Capacity-hungry Apps (e.g., mobile videos) Higher SE Higher EE GREEN Larger cells? Smaller cells Less signaling overhead Global optimization Smart C-plane Larger decouple D-plane Smaller Hyper Cellular Architecture Coverage-on-demand Densely deployed Green 11

11 Hyper Cellular for Green and Smart Layered RAN Dedicated for high-rate user data transmission Control Network Layer Synchronization/Broadcast of System Information/Paging/Multicast Data Network Layer Syn./Unicast Data BS Control BS For ubiquitours network access provision Data BS UE with High-Rate Requirement UE with Low-Rate Requirement Control Signaling, e.g. paging, system info., high-layer control info., etc. Data Signaling, e.g. user data packet 12

12 5G: A Paradigm Shift of Cellular Architecture 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) M2M BDMA SCMA Z. Niu, S. Zhou, S. Zhou, X. Zhong, J. Wang, A Hyper-Cellular Paradigm for Globally Resourceoptimized and Energy-Efficient Networks (GREEN), Science in China, Sep (in Chinese) 13

13 From Dr. Wen Tong s Talk at IEEE ICCC 16 14

14 Highlights of the Research Progress National 973 Project on GREEN ( ) - Tsinghua University (PI) - BUPT/UESTC/SEU/BUAA/ZJU/USTC - China Telecom - Huawei 17