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| My recent work on wireless networking |
| Multihop Broadcast in Wireless Sensor Networks |
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We designed an efficient multihop broadcast procotol over asynchronous duty cycle MAC, called ADB, for wireless sensor networks. ADB achieves close-to-optimal latency, very low energy consumption and high packet deliver ratios.
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Yanjun Sun, Omer Gurewitz, Shu Du, Lei Tang and David B. Johnson, "ADB: An Efficient Multihop Broadcast Protocol based on Asynchronous Duty-Cycling in Wireless Sensor Networks", in Proceedings of SenSys 2009.
BibTex Paper Slides
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| Asynchronous MAC Protocols for Wireless Sensor Networks |
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We developed an asynchronous duty cycle MAC protocol, called Receiver Initiated MAC (RI-MAC), that achieves high throughput and energy efficiency under a wide range of traffic loads. RI-MAC has been implemented both in TinyOS on MicaZ and in ns2 simulator.
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Yanjun Sun, Omer Gurewitz, and David B. Johnson, "RI-MAC:
A Receiver Initiated Asynchronous Duty Cycle MAC Protocol for Dynamic Traffic Loads in Wireless Sensor Networks", in Proceedings of SenSys 2008.
BibTex Paper Slides TinyOS Code ns-2 Simulation Code
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| Synchronous MAC Protocols for Wireless Sensor Networks |
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We developed a synchronous duty cycle MAC protocol, called Demand Wakeup MAC (DW-MAC), that achieves low delivery latency under a wide range of traffic loads including both unicast and broadcast traffic.
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Yanjun Sun, Shu Du, Omer Gurewitz, and David B. Johnson, "DW-MAC: A Low Latency, Energy Efficient Demand-Wakeup MAC Protocol for Wireless Sensor Networks", In Proceedings of MobiHoc 2008.
BibTex Paper
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| Coexistence of Wireless LAN and Bluetooth technologies |
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We've filed 16 patent disclosures to improve throughput, fairness and QoS of coexisting WLAN and Bluetooth technologies and 7 of them have been filed to U.S. patent office.
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| MAC Protocols for Wireless Mesh Networks |
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We developed a new MAC protocol to take advantage of the superposition coding feature provided by physical layer.
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Li (Erran) Li, Richard Alimi, Ramachandran Ramjee, Jingpu Shi, Yanjun Sun, Harish Viswanathan, and Yang Richard Yang, "Superposition Coding for Wireless Mesh Networks", In proceedings of MobiCom 2007 (4 pages).
BibTex Paper
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| Simulation of Large-scale Wireless Networks |
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We have improved the ns-2 simulator so that it is able to support network simulations with more than ten thousand mobile nodes.
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