Journal Publications

1. M. X. Cheng, L. Ruan, W. Wu. Coverage Breach Problems in Bandwidth Constrained Sensor Networks. ACM Transactions on Sensor Networks, 3(2): Article 12, June 2007.

2. C. Liu and L. Ruan. A New Survivable Mapping Problem in IP-over-WDM Networks. IEEE Journal on Selected Areas in Communications, 25(4): 25-34, April 2007.

3. L. Ruan, F. Tang, and C. Liu. Dynamic Establishment of Restorable Connections Using p-Cycle Protection in WDM Networks. Optical Switching and Networking, Vol. 3. No. 3+4. pp. 191-201, Dec. 2006.

4. L. Ruan and F. Tang. Survivable IP Network Realization in IP-over-WDM Networks under Overlay Model. Computer Communications, 29(10): 1772-1779, June 2006.

5. C. Liu and L. Ruan. p-Cycle Design in Survivable WDM Networks with Shared Risk Link Groups (SRLGs). Photonic Network Communications, 11(3): 301-311, May 2006.

6. L. Ruan and W. Wu. Broadcast Routing with Minimum Wavelength Conversion in WDM Optical Networks. Journal of Combinatorial Optimization, 9(2): 223-235, March 2005.

7. L. Ruan, S. Han, D. Li, Hung Q. Ngo, and S. Huang. Transmission Fault-Tolerance of Iterated Line Digraphs. Journal of Interconnection Networks, 5(4): 475-487, December 2004.

8. L. Ruan, H. Du, X. Jia, W. Wu, Y. Li, and K. Ko. A Greedy Approximation for Minimum Connected Dominating Sets. Theoretical Computer Science, 329(1-3): 325-330, December 2004.

9. L. Ruan, H. Luo, and C. Liu. A Dynamic Routing Algorithm with Load Balancing Heuristics for Restorable Connections in WDM Networks. IEEE Journal on Selected Areas in Communications, 22(9): 1823-1829, November 2004.

10. X. Cheng, X. Du, M. Min, H. Q. Ngo, L. Ruan, J. Sun, and W. Wu. Super Link-Connectivity of Iterated Line Digraphs. Theoretical Computer Science, 304(1-3): 461-469, July 2003.

11. X. Jia, X. Hu, L. Ruan, and J. Sun. Multicast Routing, Load Balancing and Wavelength Assignment on Tree of Rings. IEEE Communications Letters, 6(2): 79-81, February 2002.

12. L. Ruan, D-Z. Du, X. Hu, X. Jia, D. Li, and Z. Sun. Converter Placement Supporting Broadcast in WDM Optical Networks. IEEE Transactions on Computers, 50(7): 750-758, July 2001.

13. B. Lu and L. Ruan. Polynomial Time Approximation Scheme for the Rectilinear Steiner Arborescence Problem. Journal of Combinatorial Optimization, 4(3): 357-363, September 2000.

14. D. Li, X. Du, X. Hu, L. Ruan, and X. Jia. Minimizing Number of Wavelengths in Multicast Routing Trees in WDM Networks. Networks, 35(4): 260-265, July 2000.

Refereed Conference Publications

1. A. Dhananjay and L. Ruan. PigWin: Meaningful Load Estimation in IEEE 802.11 Based Wireless LANs. In Proc. IEEE ICC, Beijing, China, May 2008.

2. T. Feng, L. Ruan, W. Zhang. Intelligent p-Cycle Protection for Multicast Sessions in WDM Networks. In Proc. IEEE ICC, Beijing, China, May 2008.

3. T. Feng, C. Wang, W. Zhang, L. Ruan. Confidentiality Protection Schemes for Data Aggregation in Sensor Networks. In Proc. IEEE INFOCOM, Phoenix, AZ, April 2008.   

4. L. Ruan and Z. Liu. A Capacity Efficient Local Protection Scheme for Bandwidth Guaranteed Connections. In Proc. IEEE ICC, Glasgow, Scotland, June 2007.

5. C. Liu and L. Ruan. Dynamic Provisioning of Survivable Services Using Path-Segment Protecting p-Cycles in WDM Networks. In Proc. of Int’l Conf. on Computer Communications and Networks, pages 275-280, Arlington, Virginia, USA, October 2006. (Best paper candidate)

6. C. Liu and L. Ruan. Logical Topology Augmentation for Survivable Mapping in IP-over-WDM Networks. In Proc. of IEEE Globecom, volume 4, pages 1885 – 1889, St. Louis, MO, USA, November/December 2005.

7. L. Ruan and Chang Liu. A Heuristic Algorithm for Survivable Mapping in IP-over-WDM Networks. In Proc. of the Third IASTED Int’l Conf. on Communications and Computer Networks, pages 164-170, Marina del Rey, CA, USA, October 2005.

8. Z. Liu and L. Ruan. Reducing Restoration Blocking in WDM Optical Networks. In Proc. of Int’l Conf. on Computer Communications and Networks (ICCCN), pages 323-330, San Diego, CA, USA, October 2005.

9. C. Liu and L. Ruan. p-Cycle Design in Survivable Networks with Shared Risk Link Groups (SRLGs). In Proc. of Int’l Workshop on Design of Reliable Communication Networks (DRCN), pages 207-212, Island of Ischia, Italy, October 2005.

10. L. Ruan and F. Tang. Dynamic Establishment of Restorable Connections using p-Cycle Protection in WDM Networks. In Proc. of Int’l Conf. on Broadband Communications, Networks, and Systems (Broadnets), pages 147-154, Boston, MA, USA, October 2005.

11. F. Tang and L. Ruan. A Protection Tree Scheme for First-Failure Protection and Second-Failure Restoration in Optical Networks. In Proc. of Int’l Conf. on Computer Network and Mobile Computing (Lecture Notes in Computer Science 3619), pages 620-631, Zhangjiajie, China, August 2005.

12. L. Ruan and Z. Liu. Upstream Node Initiated Fast Restoration in MPLS Networks. In Proc. of IEEE Int’l Conf. on Communications (ICC), pages 959-964, Seoul, Korea, May 2005.

13. M. X. Cheng, L. Ruan, and W. Wu. Achieving Minimum Coverage Breach under Bandwidth Constraints in Wireless Sensor Networks. In Proc. of IEEE INFOCOM, pages 2638-2645, Miami, FL, USA, March 2005.

14. C. Liu and L. Ruan. Finding Good Candidate Cycles for Efficient p-Cycle Network Design. In Proc. of Int’l Conf. on Computer Communications and Networks (ICCCN), pages 321-326, Chicago, IL, USA, October 2004.

15. L. Ruan and H. Luo. Dynamic Routing of Restorable Lightpaths: A Tradeoff Between Capacity Efficiency and Resource Information Requirement. In Proc. of the 7^th IFIP Working Conference on Optical Network Design and Modeling (ONDM), pages 537-548, Budapest, Hungary, February 2003.

16. H. Luo and L. Ruan. Load Balancing Heuristics for Dynamic Establishment of Restorable Lightpaths. In Proc. of Int’l Conf. on Computer Communications and Networks (ICCCN), pages 472-477, Miami, Florida, USA, October 2002.

17. L. Ruan and H. Luo. A Fast Lightpath Restoration Method Using Two Backup Paths in WDM Networks. In Proc. of Int’l Conf. on Parallel Processing Workshops, pages 183-189, Vancouver, Canada, August 2002.

18. X. Jia, X. Hu, L. Ruan, and J. Sun. Multicast Routing, Load Balancing and Wavelength Assignment on Tree of Rings. In Proc of IASTED Int'l Conf. on Wireless and Optical Communications, pages 239-244, Banff, Canada, June 2001.

Invited Papers

· L. Ruan, D-Z. Du, X. Hu, X. Jia, and D. Li. Approximations for Color-Covering Problems. Presented at the First Int'l Congress of Chinese Mathematicians, Beijing, China, Dec 1998. Published in AMS/IP Studies in Advanced Mathematics, 20: 503-507, June 2001.

Edited Books

· L. Ruan and D-Z. Du (eds.). Optical Networks-Recent Advances. Kluwer Academic Publishers, 2001.