Wireless Coexistence in Open Radio Spectrum: Curses and Blessings


The world is expected be replete with wireless Internet of Things such as smart appliances, vehicles, wearables, etc. However, due to the shared physical media, interference becomes a growing issue as wireless devices populate the public radio bands, such as 802.11 computers, ZigBee sensors, and Bluetooth devices.

First, my group is among the first to systematically study the issue of co-existence between Wi-Fi and ZigBee networks [MobiCom10, ICNP10, RTSS11, PerCom13, MobiSys13, Infocom14, Infocom15, TMC14]. We propose a novel approach that enables ZigBee links to achieve assured performance in the presence of heavy Wi-Fi interference. Second, we proposed a novel top-down cross-layer wireless design approach. While the traditional wisdom of cross-layer design is to exploit PHY/link layer information at upper-layers, our approach represents a paradigm shift in that it leverages signatures of upper-layer protocols to improve PHY and link layer performance, particularly in the presence of significant interference. By capturing traffic signatures such protocol-specific header structures and spatiotemporal correlation of application payload, a wireless receiver can predict some values of received bits even before they are decoded, and exploit them in decoding to optimize the performance of PHY and link layers. Our approach can be easily integrated with different wireless standards, such as 802.11p used for vehicle-to-vehicle (V2V) network, as well as WiMAX and LTE used for vehicle-to-infrastructure (V2I) communication. Third, my group is the first to demonstrate the significant benefits of exploiting cross-technology wireless interference. We developed new systems that utilize ZigBee radios to identify the existence of Wi-Fi networks through unique interference signatures generated by Wi-Fi beacons. These systems have been used for WiFi discovery on mobile devices and time synchronization in large ZigBee networks.

Funding

1. National Science Foundation, "CAREER: Design and Analysis of Performance-Critical Wireless Sensor Networks: A Fusion-Centric Approach", PI, $424,673, 2010-2016.

2. National Science Foundation, "NeTS: Holistic Transparent Performance Assurance in the Crowded Spectrum", PI, $200,000, 2009/9-2013/9.

People

Guoliang Xing (Associate Professor, MSU)
Jun Huang (Ph.D 2011, currently Assistant Professor at Peking University, China)
Wahhab Al Bazrqaoe (Ph.D candidate, MSU)
Alireza Ameli (Ph.D candidate, MSU)

Awards & Recognitions

1. Mark Weiser Best Paper Award Runner-up, “Negotiate Power and Performance in the Reality of RFID Systems”, the 8th Annual IEEE International Conference on Pervasive Computing and Communications (PerCom), 2010.

2. Best Paper Finalist, “Passive Interference Measurement in Wireless Sensor Networks”, The 18th IEEE International Conference on Network Protocols (ICNP), 2010.

3. Best Paper Award, “Beyond Co-existence: Exploiting WiFi White Space for ZigBee Performance Assurance”, the 18th IEEE International Conference on Network Protocols (ICNP), 2010.


Publications


1. Tian Hao, Ruogu Zhou, Guoliang Xing, Matt W. Mutka and Jiming Chen, "WizSync: Exploiting Wi-Fi Infrastructure for Clock Synchronization in Wireless Sensor Networks," in IEEE Transactions on Mobile Computing, vol. 13, no. 6, pp. 1379-1392, June 2014.

2. Jun Huang, Shucheng Liu, Guoliang Xing, Hongwei Zhang, Jianping Wang, Liusheng Huang, Accuracy-aware Interference Modeling and Measurement in Wireless Sensor Networks, the 31st Int'l Conference on Distributed Computing Systems (ICDCS), June 20-24, 2011 Minneapolis, Minnesota, USA, acceptance ratio: 87/565=15.4%.

3. Yuhang Gao, Jianwei Niu, Ruogu Zhou, Guoliang Xing, ZiFind: Exploiting Cross-Technology Interference Signatures for Energy-Efficient Indoor Localization, The 31th IEEE International Conference on Computer Communications (INFOCOM), 2013, acceptance raio: 280/1613 = 17/%.

4. Ruogu Zhou, Guoliang Xing, Xunteng Xu, Jianping Wang, Lin Gu, WizNet: A ZigBee-based Sensor System for Distributed Wireless LAN Performance Monitoring, The 11th IEEE International Conference on Pervasive Computing and Communications (PerCom), 2013, acceptance ratio: 18 full papers out of 170 submissions = 10.6%.

5. Xunteng Xu, Lin Gu, Jianping Wang, Guoliang Xing, Negotiate Power and Performance in the Reality of RFID Systems, The 8th Annual IEEE International Conference on Pervasive Computing and Communications (PerCom), March 29 - April 2, 2010, Mannheim, Germany, acceptance ratio: 27/227=12%, Best Paper Candidate (3 out of 227 submissions).

6. Jun Huang, Guoliang Xing, Gang Zhou, Ruogu Zhou, Beyond Co-existence: Exploiting WiFi White Space for ZigBee Performance Assurance, The 18th IEEE International Conference on Network Protocols (ICNP), Kyoto, Japan, October 5-8, 2010, acceptance ratio: 31/170 = 18.2%, Best Paper Award (1 out of 170 submissions).

7. Shucheng Liu, Guoliang Xing, Hongwei Zhang, Jianping Wang, Jun Huang, Mo Sha, Liusheng Huang, Passive Interference Measurement in Wireless Sensor Networks, The 18th IEEE International Conference on Network Protocols (ICNP), Kyoto, Japan, October 5-8, 2010, acceptance ratio: 31/170 = 18.2%, Best Paper Candidate (6 out of 170 submissions).

8. Ruogu Zhou, Yongping Xiong, Guoliang Xing, Limin Sun, Jian Ma, ZiFi: Wireless LAN Discovery via ZigBee Interference Signatures, The 16th Annual International Conference on Mobile Computing and Networking (MobiCom), Chicago, USA, Sept. 2010, acceptance ratio: 33/233=14.2%.

9. Tian Hao, Ruogu Zhou, Guoliang Xing, Matt Mutka, WizSync: Exploiting Wi-Fi Infrastructure for Clock Synchronization in Wireless Sensor Networks, the 32nd IEEE Real-Time Systems Symposium (RTSS), Vienna, Austria, November 29 - December 2, 2011, acceptance ratio: 21%.

10. Guoliang Xing, Mo Sha, Jun Huang, Gang Zhou, Xiaorui Wang and Shucheng Liu, Multi-channel Interference Measurement and Modeling in Low-Power Wireless Networks, The 30th IEEE Real-Time Systems Symposium (RTSS), December 1-4, 2009, Washington, D.C.

11. Yongping Xiong, Ruogu Zhou, Minming Li, Guoliang Xing, Limin Sun and Jian Ma, ZiFi: Exploiting Cross-Technology Interference Signatures for Wireless LAN Discovery, IEEE Transactions on Mobile Computing, vol. 13, no. 11, pp. 2675-2688, Nov. 2014.