Mirror Mirror on the Ceiling: Flexible Wireless Links for Data Centers Presenter: Lu Gong.

Slides:



Advertisements
Similar presentations
Cognitive Radio Communications and Networks: Principles and Practice By A. M. Wyglinski, M. Nekovee, Y. T. Hou (Elsevier, December 2009) 1 Chapter 12 Cross-Layer.
Advertisements

Capacity of wireless ad-hoc networks By Kumar Manvendra October 31,2002.
Multiple Access Techniques for wireless communication
Data Communications and Networking
BBN: Throughput Scaling in Dense Enterprise WLANs with Blind Beamforming and Nulling Wenjie Zhou (Co-Primary Author), Tarun Bansal (Co-Primary Author),
Optical communications & networking - an Overview
Routing and Scheduling in Wireless Grid Mesh Networks Abdullah-Al Mahmood Supervisor: Ehab Elmallah Graduate Students’ Workshop on Networks Research Department.
60 GHz Flyways: Adding multi-Gbps wireless links to data centers
Semester Copyright USM EEE442 Computer Networks The Data Link / Network Layer Functions: Switching En. Mohd Nazri Mahmud MPhil (Cambridge, UK)
Overview.  UMTS (Universal Mobile Telecommunication System) the third generation mobile communication systems.
In-Band Flow Establishment for End-to-End QoS in RDRN Saravanan Radhakrishnan.
CS541 Advanced Networking 1 Cognitive Radio Networks Neil Tang 1/28/2009.
Kick-off meeting 3 October 2012 Patras. Research Team B Communication Networks Laboratory (CNL), Computer Engineering & Informatics Department (CEID),
1 Algorithms for Bandwidth Efficient Multicast Routing in Multi-channel Multi-radio Wireless Mesh Networks Hoang Lan Nguyen and Uyen Trang Nguyen Presenter:
NETE 0510 Presented by Dr.Apichan Kanjanavapastit
Wireless Transmission Fundamentals (Physical Layer) Professor Honggang Wang
Terrestrial Microwave TK2133 A Lee Hau Sem A Lai Horng Meau.
Real-Time Scheduling for WirelessHART Networks by Abusayeed Saifullah, You Xu, Chenyang Lu, and Yixin Chen A Presentation of Findings for CSE5095 Joshua.
Chapter 4 Local Area Networks. Layer 2: The Datalink Layer The datalink layer provides point-to- point connectivity between devices over the physical.
ECEN 621, Prof. Xi Zhang ECEN “ Mobile Wireless Networking ” Course Materials: Papers, Reference Texts: Bertsekas/Gallager, Stuber, Stallings,
1 IEEE Wireless MAN "Air Interface for Fixed Broadband Wireless Access Systems"
Communication systems Dr. Bahawodin Baha School of Engineering University of Brighton, UK July 2007.
M YSORE 2013 Preferential Subject 1: Role of ICT in Power System COMMUNICATION ALTERNATIVES FOR SMART GRIDS: THE INTEGRATED APPROACH Jaume Darné and Claudio.
Signal Propagation Propagation: How the Signal are spreading from the receiver to sender. Transmitted to the Receiver in the spherical shape. sender When.
Enhancing TCP Fairness in Ad Hoc Wireless Networks using Neighborhood RED Kaixin Xu, Mario Gerla UCLA Computer Science Department
Computer Architecture Lecture 30 Fasih ur Rehman.
Optimal Power Control, Rate Adaptation and Scheduling for UWB-Based Wireless Networked Control Systems Sinem Coleri Ergen (joint with Yalcin Sadi) Wireless.
OV Copyright © 2013 Logical Operations, Inc. All rights reserved. Network Implementations  Ethernet Networks  Wireless Networks.
Data Communications Chapter 16, Exploring the Digital Domain.
1 Heterogeneity in Multi-Hop Wireless Networks Nitin H. Vaidya University of Illinois at Urbana-Champaign © 2003 Vaidya.
1 © 2004, Cisco Systems, Inc. All rights reserved. Wireless Local Area Networks (WLANs)
1 Yue Qiao Computer Science and Engineering Sep AirExpress: Enabling Seamless In-band.
Some Networking Basics: LANs, WANs, Switching, and Multiplexing Carey Williamson Department of Computer Science University of Calgary.
Overview of Research Activities Aylin Yener
1 CHAPTER 8 TELECOMMUNICATIONSANDNETWORKS. 2 TELECOMMUNICATIONS Telecommunications: Communication of all types of information, including digital data,
MASNET GroupXiuzhen ChengFeb 8, 2006 Terms and Concepts Behind Wireless Communications.
Covilhã, 30 June Atílio Gameiro Page 1 The information in this document is provided as is and no guarantee or warranty is given that the information is.
Optical telecommunication networks.  Introduction  Multiplexing  Optical Multiplexing  Components of Optical Mux  Application  Advantages  Shortcomings/Future.
Wireless Technologies Chapter 9. Learning Objectives Explain current wireless networking technologies Discuss history of wireless networks and their advantages.
Lecture 6 Page 1 Advanced Network Security Review of Networking Basics Advanced Network Security Peter Reiher August, 2014.
Cellular Communication SNSCE - CS2402 Mobile Pervasive Computing.
Multi-Radio Integration for Heterogeneous IEEE Network Beyond 4G IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE C /0015.
Opposing views to 3D Beamforming Yin Zhu 20 Feb 2013.
Network and Systems Laboratory nslab.ee.ntu.edu.tw Branislav Kusy, Christian Richter, Wen Hu, Mikhail Afanasyev, Raja Jurdak, Michael Brunig, David Abbott,
Data Comm. & Networks Instructor: Ibrahim Tariq Lecture 3.
Lecture 1 Outline Statistical Multiplexing Inter-Process Communication.
Basics Modulation Multiple Access
Francine Lalooses David Lancia Arkadiusz Slanda Donald Traboini
QoS Routing and Scheduling in TDMA based Wireless Mesh Backhaul Networks Chi-Yao Hong, Ai-Chun Pang,and Jean-Lien C. Wu IEEE Wireless Communications and.
Dependability in Wireless Networks By Mohammed Al-Ghamdi.
Lesson 2—Networking BASICS1 Networking BASICS Network Media Unit 1 Lesson 2.
Topic : 4.0 WIRELESS TECHNOLOGIES.  Wireless networks utilize radio waves and/or microwaves to maintain communication channels between computers. Wireless.
Electromagnetic Spectrum. -is the range of all possible frequencies of electromagnetic radiation. The "electromagnetic spectrum" of an object is the characteristic.
Partially Overlapped Channels Not Considered Harmful Arunesh Mishra, Vivek Shrivastava, Suman Banerjee, William Arbaugh (ACM SIGMetrics 2006) Slides adapted.
1 Low Latency Multimedia Broadcast in Multi-Rate Wireless Meshes Chun Tung Chou, Archan Misra Proc. 1st IEEE Workshop on Wireless Mesh Networks (WIMESH),
Shanghai Jiao Tong University Institute of Wireless Comm. Tech. (IWCT) 无线技术沙龙 Wireless Club 创 新 无 线 精 彩 无 限 Enabling Splendid Wireless A Theoretical Framework.
Transmission Media The transmission medium is the physical path by which a message travels from sender to receiver. Computers and telecommunication devices.
Revisiting Transport Congestion Control Jian He UT Austin 1.
Wi-Fi - IEEE Standards and the future of Wi-Fi Mingnan Yuan Department of Electrical and Computer Engineering Auburn University March 9, 2016.
Presented by Raisa Tripathy Regd.no ETC.
Diamond: Nesting the Data Center Network with Wireless Rings in 3D Space Yong Cui 1, Shihan Xiao 1, Xin Wang 2, Zhenjie Yang 1, Chao Zhu 1, Xiangyang Li.
Achieving Single Channel, Full Duplex Wireless Communication
Wireless ATM & Congestion Control
Teng Wei and Xinyu Zhang
OpenFlow in Wireless-Associated Data Center Network
Wireless ATM PRESENTED BY : NIPURBA KONAR.
Achieving Single Channel, Full Duplex Wireless Communication
Optical communications & networking - an Overview
Wireless MAN Neil Tang 10/03/2008
Presentation transcript:

Mirror Mirror on the Ceiling: Flexible Wireless Links for Data Centers Presenter: Lu Gong

About Authors

About Authors: Xia Zhou PhD candidate, UCSB Fields: Networks & Communications, Mathematics, Microbiology

About Authors: Zengbin Zhang PhD candidate, UCSB Fields: Wireless Systems and Networking, Mobile Computing and Distributed Systems

About Authors: Yibo Zhu PhD candidate, UCSB Fields: Data Center Networks, Mobile Networks and Online Social Networks

Problems with any wired network topology Any large-scale network consists of multiple stages → nr of fibers/wires are doubled/tripled Distribute fixed amount of fibers to every rack → fibers are over deployed for the worst case Once deployed, very hard to modify

Our goal Focus on a subset of applications – that do not require non-blocking all-to-all communication – exclude high-end datacenter computing We hope to create a new primitive – high-throughput, beamforming wireless links in the 60GHz band

Existing works Signal leakage → limits the concurrent active links Line-of-sight requirement → limits the effective range of links

Properties of 60GHz band wireless links 7GHz spectrum → multi-Gbps bandwidth High frequency → small interference Able to use beamforming to enhance link rate and further suppress interference 5mm wavelength → any object larger than 2.5mm can block/reflect signal

Beamforming A physical layer technique to concentrate transmission energy in a specific direction

Testbed of link blockage

Testbed of radio interference

3D Beamforming Components: – Beamforming Radios – Ceiling Reflectors – Electromagnetic Absorbers Prevent local reflections and scattering

Testbed of 3D Beamforming

Microbenchmark: Validate Physical Properties

Microbenchmark: Radios per Rack

Microbenchmark: Sensitivity to Hardware

Scheduling: Goal & Challenges Goal – Maximize efficiency – Minimize wireless interference Challenges – Require accurate interference model (accumulate interference) – Handle short-lived traffic burst → must be online – Account for antenna rotation delay (0.01s~1s)

Scheduling: Design Conflict-Degree based Greedy Scheduling – Goal → Minimize job completion time – Graph coloring problem Color: 60GHz frequency channels & time slots – Link preemption or not? – Minimize antenna rotation overhead

Evaluation: Addressing Traffic Hotspots Does adding 3D beamforming links to existing wired networks significantly increase available bandwidth for hotspots? How significant are the benefits of 3D beamforming over 2D beamforming, and where are they most visible? Will antenna rotation delay of today’s rotators be a performance bottleneck for 3D beamforming?

Evaluation: Flow Completion Time

Future Work Routing Traffic management Priority-based scheduler Wired/wireless co-scheduling

Related Work Address traffic congestion – Network architecture design & traffic scheduling – Modeling network traffic characteristics 60GHz wireless technology Optical circuit switching