LI Hewu-Institute for Network Sciences and Cyberspace, Tsinghua University

Research Status

With the continuous expansion of cyberspace, how to fundamentally solve the deep integration of the Internet, mobile communication networks, and space networks from the architectural level has become a major research direction for the development of the next-generation Internet. In recent years, I have led my team to achieve key research results in the fields of Integrated Space-Terrestrial Network, future mobile Internet, and future mobile Internet applications, including:

1. Research on the architecture of the Integrated Space-Terrestrial Network: In terms of networking architecture, I proposed the overall scheme of the future Integrated Space-Terrestrial Network architecture based on "dual backbones of space network and terrestrial network" and a three-dimensional, dynamic, and reconfigurable new space-terrestrial interconnection mechanism. In terms of architecture, based on the layered model of the Internet protocol, I designed a topology discovery sub-layer that supports "out-of-band" management. Based on the IPv6 protocol, I creatively proposed a network collaborative addressing and addressing method combined with geographic location. Using the mobile characteristics of satellites "broadcasting while moving", I designed a space-terrestrial collaborative "space-cloud distribution system". I have developed a simulation testbed for the Integrated Space-Terrestrial Network, which has the ability to demonstrate and verify the Integrated Space-Terrestrial Network in a real operating network environment. As a core member of the editorial board, I actively participated in the writing of the project proposal and implementation plan for the national major project "Integrated Space-Terrestrial Information Network" of "Science and Technology Innovation 2030". The proposed networking architecture has been directly adopted in the demonstration of national major project proposals. I have undertaken and been responsible for a number of national related strategic topics and major special projects, and the scientific and technological achievements have been successfully applied in the first-phase project of the Laishui Integrated Space-Terrestrial Information Network Technology Innovation Facility and the "Demonstration Concept System" of the China Electronics Technology Group Corporation. I have taken the lead in promoting the international standardization of the Integrated Space-Terrestrial Network, submitting 2 IETF standard drafts and 2 project proposals to the ITU SG11 and SG13 working groups. I have published many papers in core journals and international conferences.

2. Research on the architecture of the future mobile Internet: I proposed a new and efficient future mobile Internet network architecture and its software-defined interface design (SDN+). Based on SAVI and 802.1x, I proposed a unified stateful and stateless IPv6 trusted address allocation method to achieve unified, efficient, and terminal-transparent trusted address allocation. I designed a trusted path management mechanism based on SRv6 extension to achieve trusted forwarding paths while protecting user privacy. It provides a foundation for the realization of integrated collaboration, real and credible, dynamic policies, and elastic service chains of future mobile communication network resources. I have undertaken and been responsible for a number of national major special projects, and the scientific and technological achievements have received high praise and have been successfully applied in the live network of China Telecom and the country's first "5G Ubiquitous Town" project in Xuchang. I have published a number of academic papers in core journals and international conferences, and have won one first prize from the China Communications Standards Association (ministerial level).

3. Research on the application platform of the future mobile Internet: Facing smart terminals and smart networks, integrating the major attributes of future mobile Internet applications, namely: location attribute, online attribute, social attribute, and access attribute (IPv4/v6; WiFi/3G/4G; trusted network/untrusted network), and using big data theory and methods, I have developed a number of representative next-generation mobile Internet applications and deployed them in the live network. I have undertaken and been responsible for a number of national major projects, and the scientific and technological achievements have received high praise and have been successfully applied in the live network of China Telecom. I have published many papers in core journals and international conferences, and the relevant achievements have been successfully applied in the live network of China Telecom, and I have won one second prize for the Electronic Information Science and Technology Award of the Chinese Institute of Electronics (ministerial level). The "At Tsinghua" campus mobile application platform developed by my student team has currently accumulated 210,000 downloads, and various applications have been used more than 100 million times. It has won the first prize in the campus category of the "Kylin Cup" National Basic Software Elite Competition, the first prize and the best algorithm award in the "Who is the Most V-er Product Development Competition" for national colleges and universities, and the first prize in the practice group of the first Next Generation Internet Technology Innovation Competition finals.

As the person in charge of the project or sub-project, I have successively undertaken a number of national major projects in the above fields, including: major special projects, core high-tech projects, key projects of the National Natural Science Foundation of China, key research and development plans, 863 Program, and science and technology support plans. I have published nearly 100 papers in domestic and foreign academic conferences and domestic core journals. I have applied for 21 national invention patents. I have won one special prize and one second prize from the Chinese Institute of Electronics, and one first prize from the China Communications Standards Association.

Academic Achievement

Conference Papers：

[1] Yuanjie Li, Chunyi Peng, Zhehui Zhang, Zhaowei Tan, Haotian Deng, Jinghao Zhao, Qianru Li, Yunqi Guo, Kai Ling, Boyan Ding, Hewu Li*, Songwu Lu; Experience: A Five-Year Retrospective of MobileInsight. ACM International Conference on Computing and Networking (MobiCom 2021), New Orleans, United States, October 25–29, 2021

[2] Zeqi Lai, Hewu Li*, Jihao Li; StarPerf: Characterizing Network Performance for Emerging Mega-Constellations. 2020 IEEE 28th International Conference on Network Protocols (ICNP), Madrid, Spain, October 13-16, 2020, pp. 1-11, doi: 0.1109/ICNP49622.2020.9259357.

[3] Tianming Lan, Hewu Li, Qian Wu, Zeqi Lai, Jun Liu. Exploiting Path Diversity to Increase System Performance in Mega-constellations, IEEE Wireless Communications and Networking Conference (WCNC), Nanjing, China, 29 March-1April, 2021

[4] Jihao Li, Hewu Li, Jun Liu, Zeqi Lai, Qian Wu, Xiaomo Wang. A Timeslot Division Strategy for Availability in Integrated Satellite and Terrestrial Network, IEEE Wireless Communications and Networking Conference (WCNC), Nanjing, China, 29 March-1April, 2021

[5] Boyang Wu, Hewu Li, Qian Wu, Zhou Jiang, Jun Liu. TMPTCP: A Lightweight Trust Extension for Multipath-TCP, 2020 International Conference on Networking and Network Applications (NaNA2020), Hainan, China, Dec.10-12, 2020

[6] Siyu Yang, Hewu Li, Zeqi Lai, Jun Liu. A Synergic Architecture for Content Distribution in Integrated Satellite and Terrestrial Networks, IEEE 6th International Conference on Computer and Communications (ICCC), Chongqing, China, August 9, 2020

[7] Jiang Zhou, Hewu Li, Qian Wu, Zeqi Lai, Jun Liu. SR-TPP: Extending IPv6 Segment Routing to enable Trusted and Private Network Paths, 25th IEEE Symposium on Computers and Communications (ISCC 2020), Rennes, France, 7-10 July 2020

[8] Wenying Dai，Hewu Li，Qian Wu, Xiaomo Wang. NDM: Network Driving IP Mobility Support in Large Scale LEO Satellite Network, 25th IEEE Symposium on Computers and Communications (ISCC 2020), Rennes, France, 7-10 July 2020

[9] Wenying Dai, Hewu Li, Qian Wu, Xiaomo Wang. Flexible and Aggregated Mobility Management in Integrated Satellite-Terrestrial Networks, International Wireless Communications and Mobile Computing (IWCMC), Limassol, Cyprus, pp.982-7, 15-19 June 2020

[10] Xinmu Wang, Hewu Li, Tianming Lan, Qian Wu*. Overlay Coded Multicast for Edge Caching in 5G-Satellite Integrated Networks, IEEE Wireless Communications and Networking Conference (WCNC), Seoul, South Korea, 7 pp., 25-28 May 2020

[11] Xinmu Wang, Hewu Li, Wenbing Yao, Tianming Lany, Qian Wu*; Content Delivery for High-Speed Railway via Integrated Terrestrial-Satellite Networks. 2020 IEEE Wireless Communications and Networking Conference (WCNC 2020), Seoul, South Korea, 2020-05-25至2020-05-28

[12] Xinmu Wang, Hewu Li, Mingkai Tong, Wenbing Yao, Qian Wu. Cooperative Network-Coded Multicast for Layered Content Delivery in D2D-Enhanced HetNets, IEEE Symposium on Computers and Communications (ISCC), Barcelona, Spain, pp.353-358, Jun 29-Jul 03 2019

[13] Chunlei Li, Qian Wu, Hewu Li, Jiang Zhou. SDN-Ti: A General Solution Based on SDN to Attacker Traceback and Identification in IPv6 Networks, IEEE International Conference on Communications (ICC), Shanghai, China, 7 pp., 20-24 May 2019

[14] Wenying Dai, Hewu Li, Qian Wu*, Xiaomo Wang. Small number but big influence: Analysis of routing usability in ISTN, 15th International Wireless Communications and Mobile Computing Conference (IWCMC), Tangier, Morocco, pp.769-774, June 24-28, 2019

[15] Boyang Wu, Hewu Li, Qian Wu. Extending Authentication Mechanism to Cooperate with Accountable Address Assignment, 2019 IEEE Wireless Communications and Networking Conference (WCNC), Marrakesh, Morocco, 7 pp., 15-18 April 2019

[16] Xinmu Wang, Hewu Li, Qian Wu. Optimizing Adaptive Coding and Modulation for Satellite Network with ML-based CSI Prediction, IEEE Wireless Communications and Networking Conference (WCNC), Marrakesh, Morocco, 6 pp., 15-18 April 2019

[17] Hui Yang, Hewu Li, Qian Wu*. An Integrating Unicast and Multicast Solution by Extending Content Delivery Network to Satellite, 14th International Wireless Communications & Mobile Computing Conference (IWCMC), Limassol, Cyprus, pp.1414-1419, Jun 25-29, 2018

[18] Siyu Yang, Hewu Li, Qian Wu*. Performance Analysis of QUIC Protocol in Integrated Satellites and Terrestrial Networks, 14th International Wireless Communications & Mobile Computing Conference (IWCMC), Limassol, Cyprus, pp.1425-1430, Jun 25-29, 2018

[19] Tong Qin, Hewu Li, Qian Wu*, Naijia Liu, Fenghua Li. Wi-Live, Adaptive Scenario-Aware Wireless Multicast Solution for Living Streaming Based on Software Defined Networks, 14th International Wireless Communications & Mobile Computing Conference (IWCMC), Limassol, Cyprus, pp.48-53, Jun 25-29, 2018

[20] Zhuo Jiang, Qian Wu, Hewu Li*, Jianping Wu. Can MPTCP increase system efficiency and fairness in 802.11 multirate WLAN environment? IEEE 36th International Performance Computing and Communications Conference (IPCCC), San Diego, CA, USA, pp.1-7, Dec 10-12, 2017

[21] Xiaokang Sang, Qian Wu, Hewu Li*. iScan: Efficient WiFi Scan for Mobile Device Based on Client and Network Behavior Learning, IEEE SYMPOSIUM ON COMPUTERS AND COMMUNICATIONS (ISCC), Heraklion, GREECE, pp.1109-1114, Jul 03-07, 2017

[22] Xiaokang Sang, Qian Wu, Hewu Li*, Deep Analysis of Invalid Handoffs in WLANs Based on Network-Client Collaborative Framework, 23rd IEEE International Symposium on Local and Metropolitan Area Networks (LANMAN), Osaka, Japan, 6 pp., 12-14 June 2017

[23] Xiaokang Sang&, Qian Wu, Hewu Li*. Client-network collaborative load balancing mechanism for WLAN based on SDN and 802.11u, 13th International Wireless Communications and Mobile Computing Conference (IWCMC), Valencia, SPAIN, pp. 506-511, JUN 26-30, 2017

[24] Zengyin Yang, Hewu Li, Qian Wu*, Jianping Wu. Analyzing and Optimizing BGP Stability in Future Space-Based Internet, IEEE 36th International Performance Computing and Communications Conference (IPCCC), San Diego, CA, USA, pp.1-8, Dec 10-12, 2017

[25] Hui Yang*, Hewu Li, Qian Wu. IP-stream Oriented Management Mechanism in 802.11 Wireless Network by Extending SDN, IEEE Wireless Communications and Networking Conference (WCNC), San Francisco, CA, USA, 6 pp., 19-22 March 2017

[26] Zhuo Jiang*, Qian Wu, Hewu Li. NTCP: Network assisted TCP for long delay satellite network, IEEE/CIC International Conference on Communications in China (ICCC), October 7, 2016

[27] Yicheng Dai*, Fenghua Li, Hewu Li, Qian Wu. A Core-Stateless IP Mobility Management Scheme Based on OpenFlow Protocol, 12th International Wireless Communications & Mobile Computing Conference (IWCMC), Paphos, CYPRUS, p p.1117-1122, SEP 05-09, 2016

[28] Hewu Li*, Zhouyang Zhao, Fenghua Li, Qian Wu. Does Dynamic Still Work in Today's 'D'HCP, 11th IEEE International Wireless Communications and Mobile Computing Conference (IWCMC), Dubrovnik, CROATIA, pp.751-756, October 2015

[29] Yuntao Fan*&, Hewu Li, Wenqi Sun. Modeling AP’s Substitutability in Dense-deployed WLANs，2nd IEEE International Conference on Progress in Informatics and Computing (PIC), pp.525-528, Dec. 2014

[30] Wei Li&, Hewu Li*, Yong Jiang. A Practical RF-based Indoor Localization System Combined with the Embedded Sensors in Smart Phone, 10th International Wireless Communications & Mobile Computing Conference (IWCMC), Nicosia, Cyprus, pp.1177-1182, August 4-8, 2014

[31] Wenqi Sun*, Hewu Li, Jianping Wu. Channel Assignment Based on Conflict-Area for Reducing Interference in Large-scale WLANs, 23rd International Conference on Computer Communication and Networks (ICCCN), Shanghai, China, August 4-7,2014, 5pp., 2014

[32] Yuntao Fan*, Hewu Li, Qian Wu, Wenqi Sun. Mining and Predicting Smart Device User Behavior, Proceedings of the APAN-Network Research Workshop, Taiwan, Vol.38, pp.65-77, 2014

[33] Wenqi Sun*, Hewu Li, Jianping Wu. Integrated Access Selection Considering Wired and Wireless Resources, 20th Asia-Pacific Conference on Communication (APCC), pp.20-25, April 2014

[34] Wenqi Sun*, Hewu Li, Jianping Wu. Study on Real Energy Consumption of Large-scale Campus Wireless Network, International Conference on Computing, Networking and Communications (ICNC), San Diego, CA, pp.605-609, JAN 28-31, 2013

[35] DaWei Gong*, YuanYuan Yang, Hewu Li. Link-Layer Multicast in Smart Antenna Based 802.11n Wireless LANs, 10th International Conference on Mobile Ad-Hoc and Sensor Systems (MASS), Hangzhou, China, pp.484-492, OCT 14-16, 2013

[36] Jian Chen*, Hewu Li, Feixiong Zhang, Jianping Wu. MIMO mode switching scheme for rate adaptation in 802.11n wireless networks, GLOBECOM - IEEE Global Telecommunications Conference, 2011

[37] Wang Yang*, Hewu Li, Jianping Wu. ACK offloading for Reliable Multipath Transfer over Self-contention Wireless Network, Communications and Mobile Computing (CMC), pp.165-169, 2011

[38] Chunyi Peng, Suk-Bok Lee, Songwu Lu, Haiyun Luo, Hewu Li. Traffic-driven power saving in operational 3G cellular networks, Proceedings of the 17th Annual International Conference on Mobile Computing and Networking, MOBICOM, Las Vegas, Nevada, USA, pp. 121-132, September 19-23, 2011

[39] Dawei Gong*, Yuanyuan Yang, Hewu Li. High-throughput collision-free client polling in multi-AP WLANs, IEEE Global Telecommunications Conference (GLOBECOM), DEC 05-09, 2011

[40] Wang Yang*, Hewu Li, Fenghua Li, Qian Wu, Jianping Wu. RPS: Range-based Path Selection Method for Concurrent Multipath Transfer，the 6th International Wireless Communications and Mobile Computing Conference (IWCMC), Caen, France, pp.944-948, June 28-July 2, 2010

[41] Wang Yang*, Hewu Li, Jianping Wu. PAM : Precise Receive Buffer Assignment Method in Transport Protocol for Concurrent Multipath Transfer，International Conference on Communications and Mobile Computing, Vol.1, pp.413-417, 2010

[42] Jian Chen*, Hewu Li, Jianping Wu. WHAT:A Novel Routing Metric for Multi-Hop Cognitive Wireless Networks, The 19th Annual Wireless and Optical Communications Conference (WOCC 2010), 15 July 2010

[43] Cansheng Fan, Hewu Li, Jianping Wu. Utilization and Performance Analysis of SIP6, APAN Network Research Workshop, Kuala Lumpur, Malaysia, 2009

[44] Jian Chen*, Hewu Li, Jianping Wu. STARP: A Novel Routing Protocol for Multi-hop Dynamic Spectrum Access Networks, 1st ACM Workshop on Mobile Internet through Cellular Networks-Operations Challenges and Solutions (MICNET), Beijing, China, 2009, pp.49-54, SEP 20-25

[45] Xiaole Ding*, Hewu Li, Fenghua Li, Jianping Wu. A Novel Infrastructure WLAN Locating Method Based on Neural Network, Proceedings of the 4th Asian Internet Engineering Conference (AINTEC), Thailand, pp.47-55, 18-20 November 2008

[46] Dawei Gong*, Hewu Li, Fenghua Li, Xuenong Li, Chongrong Li. Design and Implementation: Large-scale IPv6 Communication System based on SIP, Proceedings of APAN Network Research Workshop 2007

[47] Rongdi Chen*, Hewu Li, Fenghua Li, Jianping Wu. Performance Optimization in Wireless Mesh Networks Based on Mesh Point Priority Mechanism, Asia-Pacific Advanced Network, Singapore, pp.57-60, July 2006

[48] Hui Ma*, Hewu Li, Peiyun Zhang, Shixin Luo, Cong Yuan, Xing Li. Range estimation and performance optimization for IEEE 802.11 based on filter, IEEE Wireless Communications and Networking Conference (WCNC 2004), Atlanta, USA, March 2004, pp,1469-1475

[49] Hui Ma, Hewu Li, Peiyun Zhang, Shixin Luo, Xing Li, Jianping Wu. An experimental study of IP multicast in IEEE 802.11 networks, Future Telecommunications Conference 2003, Beijing, Dec. 2003, 199-203

[50] Hewu Li, Jianping Wu, Wei Wu, Liang Xiao. The research of IP Multicast on 3G core networks, Future Telecommunications Conference 2003, Beijing, Dec. 2003, 647-651

[51] Hewu Li, Hui Ma, Peiyun Zhang, Shixin Luo, Jianping Wu. A novel priority mechanism for the IEEE 802.11 DCF based on multirate and FER, Asia-Pasific Advanced Network, Busan, Korea, pp.205-212, August 2003

Journal Papers：

[1] Hewu Li, Lixin Liu, Jun Liu, Qian Wu; Location based routing mechanism of integrated satellite and terrestrial network. Journal of Communications, 2020, 41(8): 120-129

[2] Pinchang Zhang, Jun Liu*, Yulong Shen, Hewu Li, Xiaohong Jiang. Lightweight Tag-Based PHY-Layer Authentication for IoT Devices in Smart Cities, IEEE INTERNET OF THINGS JOURNAL, Vol.7, Issue.5, pp.3977-3990, May 2020

[3] Zengyin Yang, Qian Wu, Hewu Li*, Jianping Wu; CRO-SS: A Route Oscillation Suppression Scheme for IP-based Satellite Network. IEEE Access, v 7, p 44721-44733, 2019

[4] Zhuo Jiang, Qian Wu, Hewu Li, Jianping Wu. Survey on Internet End-to-end Multipath Transfer Research with Cross-layer Optimization, Journal of Software, Vol. 30, No. 2, pp.302-322, Feb. 2019

[5] Zengyin Yang, Hewu Li*, Qian Wu, Jianping Wu. NTD-BGP: An inter-domain routing protocol for integrated terrestrial- satellite networks, Journal of Tsinghua University (Science and Technology), Vol.59, No.7, pp.512-522, July 1 2019

[6] Zengyin Yang, Hewu Li, Qian Wu, Jianping Wu, Jun Liu. Emulation platform for inter-domain protocols validation of integrated space-terrestrial network, Journal on Communications, Vol.40, Issue5, pp.1-12, May 25, 2019.

[7] Zengyin Yang; Hewu Li; Qian Wu*; Jianping Wu; NPVT: Network Protocol Validation Testbed for Integrated Space-Terrestrial Network. IEEE Access, v 7, p 46831-46845, 2019

[8] Zengyin Yang; Hewu Li; Qian Wu*; Jianping Wu; Topology Discovery Sub-layer for Integrated Terrestrial-Satellite Networks Routing Schemes; China Communications, 2018, 15(6): 42-57

[9] Zhuo Jiang; Qian Wu; Hewu Li*; Jianping Wu; scMPTCP: SDN Cooperated Multipath Transfer for Satellite Network with Load Awareness. IEEE Access, v 6, p 19823-19832, 2018

[10] Zhuo Jiang, Qian Wu*, Hewu Li, Jianping Wu. Link on-off prediction based multipath transfer optimization for aircraft, Journal of Tsinghua University (Science and Technology), Vol.57, No.12, pp.1239-1244, 2017

[11] LI Hewu, WU Qian, XU Ke, WU Jianping, YANG Zengyin, JIANG Zhuo, ZHU Liang. Progress and tendency of space and earth integrated network[J]. Science & Technology Review, 2016, 34(14): 95-106 https://doi.org/10.3981/j.issn.1000-7857.2016.14.011 （李贺武, 吴茜, 徐恪，吴建平，杨增印，江卓，朱亮，天地一体化网络研究进展与趋势，《科技导报》，第34卷，第14期，pp.95-106，2016年）

[12] Wenqi Sun&, Hewu Li*, Jianping Wu. A Location-aware Energy Saving Mechanism for Dense WLANs, IEICE TRANSACTIONS ON COMMUNICATIONS, Vol.E99B, No.1, pp.269-279, JAN 2016

[13] Wenqi Sun*, Hewu Li, Jianping Wu. Load-aware Spectrum Allocation based on Interference Graph Adapting to Radio Characteristics, WSEAS Transactions on Communications, Vol.14, pp.54-61, 2015

[14] Wenqi Sun, Hewu Li*, Jianping Wu. Fast mobility solutions in software-defined networks, Qinghua Daxue Xuebao/Journal of Tsinghua University, Vol.55，Issue.8, pp.900-905, August 2015

[15] Wenqi Sun&, Jianpin Wu, Hewu Li*. Survey on spectrum management in broadband wireless networks, Ruan Jian Xue Bao/Journal of Software, Vol.26, Isuue.4, pp.927-944, April 2015

[16] ZHANG Wen-tao,LI He-wu,. Indoor WLAN Positioning and Tracking Scheme Based on Signal Propagation Characteristic. Journal of Chinese Computer Systems. 2014, 35(7): 1447-1452（张文涛*，李贺武，基于信号传播特征的室内定位和追踪技术研究，《小型微型计算机系统》，第35卷，第07期，pp.1447-1452，2014年）

[17] Jian Chen*, Hewu Li. Alleviating Near-Far Effect on Spectrum Allocation Optimization in Dynamic Spectrum Access, Journal of Convergence Information Technology, Feb 2013, Vol.8, No.3, pp.399-409

[18] Jian Chen*, Jianping Wu, Hewu Li. Spectrum allocation algorithm based on user allocation and load, Ruan Jian Xue Bao/Journal of Software, Vol.24, Issue.7, pp.1638-1649, July 2013

[19] Jianping Wu, Hewu Li*, Wenqi Sun&, Qian Wu, Zhuo Jiang&, Wei Zhao. Technology Trends and Architecture Research for Future Mobile Internet，CNINA COMMNICATION, Vol.10, Issue.6, pp.14-27, June 2013

[20] Jian Chen*, Hewu Li, Jianping Wu. IEEE 802.11n power-saving algorithm based on MIMO mode selecting, Qinghua Daxue Xuebao/Journal of Tsinghua University, Vol.52, Issue.1, pp.61-65+71, January 2012

[21] Jian Chen*, Hewu Li, Jianping Wu, Xinlin Huang. SES: Stable and Efficient Solution for Rate Control and Spectrum Allocation in Wireless LANs，Wireless Personal Communications, Vol. 66, No.1, pp. 81-99, September 2012

[22] Qian Wu, Hewu Li. Linear energy function-based mobile multicast performance evaluation method, Qinghua Daxue Xuebao/Journal of Tsinghua University, Vol.52，No.8, pp.1035-1040, August 2012