Lingfen Sun

Teaching interests

Computer Networks
Distributed Processing
Multimedia Communications and Networking
Voice and Video over IP  

 

Research interests

Voice over IP

Voice/video quality prediction and control

Applications of AI in communications and networking

Multimedia communication over packet networks

QoE management

 

UoP Research group membership

Centre for Security, Communications and Network Research (CSCAN) 
Signal Processing and Multimedia Communications 

Research degrees awarded to supervised students
Current PhD students:
First supervisor, Mr Ali Alfayly (PhD on QoE-aware transport layer protocols for real-time multimedia applications)
First supervisor, Mr. Louis A Anegekuh (PhD on VoIP business model)
First supervisor, Mr. Mohammad Goudarzi (PhD on QoE control for VoIP)
Second supervisor, Mr.  Federico Da Rold (PhD on cognitive robotics) 

PhD Completions:
2011 Second supervisor, Dr. Asiya Khan on Video Quality Prediction for Video over Wireless Access Networks (UMTS and WLAN)
2009 Second supervisor, Dr. Z Qiao on Enhancement of Perceived Quality of Service for Voice over Internet Protocol Systems
2009 Second supervisor, Dr. P Hu on A Framework for Bioprofile Analysis over Grid
2007 Second supervisor, Dr. Z Li on Resource-Efficient Strategies for Mobile Ad-hoc Networking 

Grants & contracts

2011 - 2014 2011 2010 - 2014 2010 2008 – 2010	EU FP7 SEC-2011, Collaborative Project: GERYON (Next Generation Technology Independent Interoperability of Emergency Services), €2.5M (€478K at Plymouth), PI   UoP, International Research, Networking and Collaboration (IRNC) Grant, £5,000  EU COST Action IC1003 QUALINET The Royal Academy of Engineering (RAE) Travel Grant EU FP7 – ICT on Networked Media, Collaborative Project: ADAMANTIUM (ADAptative Management of media distribution based on satisfaction oriented User Modelling), €2.6M (€310K at Plymouth), Co-Investigator and WP4 leader.
2006 – 2007	Funds from industry £18K for a project on voice/video quality for 3G networks (with £6K for sponsoring two MRes projects), Co-Investigator.
2003	IEEE Travel Grant $1000 for attending IEEE ICC 2003
2002	IEEE Travel Grant $1000 for attending IEEE ICC 2002

 

Publications

Journals (since 2000):

1. QoE Prediction Model and its Application in Video Quality Adaptation over UMTS Networks, A Khan, L Sun and E Ifeachor, IEEE Transactions on Multimedia (to appear in Vol 14, No.2, April 2012)
2. "Quality of Experience (QoE) Driven Adaptation Scheme for Voice/Video over IP”
   E Jammeh, I Mkwawa, A Khan, M Goudarzi, L Sun and E Ifeachor
   Telecommunication Systems Journal, Springer, Special Issue: "Quality of Experience Issues in Multimedia Provision", Vol.49, Issue 1 (2012), pp. 99 - 111.
3.  "QoE-driven dynamic management proposals for 3G VoIP services”
   Jose-Oscar Fajardo, Fidel Liberal, Is-Haka Mkwawa, Lingfen Sun, Harilaos Koumaras
   Computer Communications, Elsevier, Vol 33, Issue 14 (Sep 2010), pp 1707 - 1724.
4.  "Learning Models for Video Quality Prediction over WLAN and UMTS Networks”
   A. Khan, L. Sun and E. Ifeachor
   IET Communications,  2010, Vol. 4, Issue 12, pp. 1389 - 1403.
5.  "Quality of experience-driven adaptation scheme for video applications over wireless networks”
   A. Khan, L. Sun, E. Jammeh and E. Ifeachor
   IET Communications Special Issue on "Video Communications over Wireless Networks", 2010, Vol. 4, Issue 11, pp. 1337 - 1347.
6.  "Type-2 Fuzzy Logic Control of a PQoS Driven Adaptive VoIP Scheme”
   E Jammeh, I Mkwawa, L Sun and E Ifeachor
   IET Electronics Letters, Volume 46, Issue 2, p.137–138, Jan 2010.
7.  "Video Quality Prediction Models based on Video Content Dynamics for H.264 Video over UMTS Networks”
   Asiya Khan, Lingfen Sun, Emmanuel Ifeachor, Jose-Oscar Fajardo, Fidel Liberal and Harilaos Koumaras
   International Journal of Digital Multimedia Broadcasting, Special Issue “IP and Broadcasting Systems Convergence (IPBSC)”, Vol. 2010, Article ID 608138, 17 pages.
8.  "QoE in multi-service multi-agent networks”
   Fidel Liberal, Armando Ferro, Harilaos Koumaras, Anastasios Kourtis, Lingfen Sun and Emmanuel Ifeachor
   Int. J. Communication Networks and Distributed Systems, Vol.4, No.2, 2010,  pp.183 – 206.
9.  "A Framework for Bioprofile Analysis over Grid”
   Pin Hu, Lingfen Sun and Emmanuel Ifeachor
   IEEE Systems Journal, Vol.3, No.4, Dec 2009, pp.520 – 535.
10.  "Video Quality Assessment as Impacted by Video Content over Wireless Networks”
    Asiya Khan, Lingfen Sun and Emmanuel Ifeachor
    IARIA, International Journal on Advances in Networks and Services, Vol. 2, No. 2&3, 2009, pp. 144 – 154.
11. "Content-based Video Quality Prediction for MPEG4 Video Streaming over Wireless Networks”
    Asiya Khan, Lingfen Sun and Emmanuel Ifeachor
    Journal of Multimedia, Vol. 4, No. 4, August 2009, pp. 228 – 239.
12. "Range-based Relative Velocity Estimations for Networked Mobile Devices”
    Z Li, L Sun and E Ifeachor
    IEEE Transactions on Vehicular Technology, Vol. 58, No. 4, May 2009, pp 2095 – 2099.
13. "A New Buffer Algorithm for Speech Quality Improvement in VoIP Systems"
    Z. Qiao, K. V. Ramesh, L. Sun and E Ifeachor
    Wireless Personal Communications (Springer), Vol. 45, Issue 2 (April 2008), pp: 189 – 207.
14. "GPS-free Mobility Metrics for Mobile Ad-hoc Networks"
    Z Li, L Sun and E Ifeachor
    IET Communications, Vol. 1, Issue 5, Oct 2007, pp.970 – 976.  
15. "Voice Quality Prediction Models and their Applications in VoIP Networks"
    L Sun and E Ifeachor
    IEEE Transactions on Multimedia, Vol. 8, No. 4, August 2006, pp. 809 – 820.

Book Chapters

1.  “A Social Relational Network – Based Architecture for Maintaining the Media Integrity and Optimizing the Quality of Experience: A Technical and Business Perspective”
H Koumaras, J-O Fajardo, F Liberal, L Sun, V Koumaras, C Troulos, A Kourtis 
Book Chapter in “Social Computing Theory and Practice: Interdisciplinary Approaches” Edited by P Papadopoulou et al. IGI Global, pp. 242 – 263. ISBN13: 9781616929046, Oct. 2010.

2. "Bioprofiling over Grid for Personalised eHealthcare for AD"
E Ifeachor, P Hu, L Sun, N Hudson, M Zervakis 
Book chapter in "Frontiers in Artificial Intelligence and Applications", pp.155-165, ISBN 978-1-60750-010-0, IOS Press, Vol. 196, 2009.

3. "Efficient Packet Relaying in Sparse Mobile Sensor Networks"

Z Li, L Sun and E Ifeachor, 
Book chapter in "Wireless Mesh & Sensor Networking – with 802.16, 802.11 and ZigBEE", G. Aggelou, Ed., McGraw-Hill, ISBN 978-0-07-148256, pp.171-180, Sep 2008.

4. "PQoS Assessment Methods for Multimedia Services",
H. Koumaras, F. Liberal, L.Sun
Chapter XIII, Handbook of Research on Wireless Multimedia: Quality of Service and Solutions, IGI Global publication, ISBN:  978-1-59904-820-8, July 2008.

Patent

1. Method and Apparatus for Determining the Speed and Orientation of Networked Mobile Stations
Z Li, L Sun and E Ifeachor, 
UK Patent filed in June 2007, Application No. GB 0711534.8

Conferences (since 2000)

1. "Impact of End Devices on Subjective Video Quality Assessment for QCIF Video Sequences"   Asiya Khan, Lingfen Sun, Jose Oscar Fajardo, Ianire Taboada, Fidel Liberal, Emmanuel Ifeachor, QoMEX 2011, Mechelen, Belgium, 7 - 9 Sep 2011
2. "Modelling Speech Quality for NB and WB SILK Codec for VoIP Applications", Mohammad Goudarzi, Lingfen Sun and Emmanuel Ifeachor, NGMAST 2011, Cardiff, Wales, UK, 14 - 16 Sep 2011
3. "QoE-driven Sender Bitrate Adaptation Scheme for Video Applications over IP Multimedia Subsystem"
   Asiya Khan, Is-Haka Mkwawa, Lingfen Sun and Emmanuel Ifeachor 
   IEEE ICC 2011, Kyoto Japan, 5-9 June 2011 (accepted)
4. "Audiovisual Quality Estimation for Video Calls in Wireless Applications”
   Mohammad Goudarzi, Lingfen Sun and Emmanuel Ifeachor
   IEEE Globecom 2010, Miami, Florida, 6 – 10 Dec 2010.
5. “Feedback-free Early VoIP Quality Adaptation Scheme in Next Generation Networks”
   Is-Haka Mkwawa, Emmanuel Jammeh, Lingfen Sun and Emmanuel Ifeachor
   IEEE Globecom 2010, Miami, Florida, 6 – 10 Dec 2010. 
6.  “Impact of RLC losses on Quality Prediction for H.264 Video over UMTS Networks”
   Asiya Khan, Lingfen Sun, Jose Oscar Fajardo, Fidel Liberal and Emmanuel Ifeachor
   IEEE ICME, 2010, Singapore, 19-23 July 2010.
7. “An ANFIS-based Hybrid Quality Prediction Model for H.264 Video over UMTS Networks”
   Asiya Khan, Lingfen Sun, Jose Oscar Fajardo, Fidel Liberal and Emmanuel Ifeachor
   IEEE CQR, 2010,  Vancouver, Canada, 8-10 June 2010.
8. “Impact of Bursty Packet Loss on Voice and Video Quality in Wireless Networks”
   Mohammad Goudarzi, Lingfen Sun and Emmanuel Ifeachor,
   Postgraduate Conference for Computing: Applications and Theory (PCCAT), 9^th June 2010, Exeter, UK.
9. “Video Quality Prediction Model for H.264 Video over UMTS Networks and their Application in Mobile Video Streaming”
   Asiya Khan, Lingfen Sun, Emmanuel Ifeachor, Jose Oscar Fajardo and Fidel Liberal
   IEEE ICC 2010, 23-29 May 2010, Cape Town, South Africa.
10. “NIDA: A Parametric Vocal Quality Assessment Algorithm over Transient Connections”
    Sofiene Jelassi, Habib Youssef, Lingfen Sun, Guy Pujolle
    12^th IFIP/IEEE International Conference on Management of Multimedia and Mobile Networks and Services (MMNS 2009), Oct 2009, pp. 106 – 117. 
11. “Content Classification Based and QoE-driven Video Send Bitrate Adaptation Scheme”
    A. Khan, L. Sun, E. Jammeh and E. Ifeachor,
    Fifth International Mobile Multimedia Communications Conference (Mobimedia), September 7-9, 2009 - London, UK.
12. “Content Classification Based on Objective Video Quality Evaluation for MPEG4 Video Streaming over Wireless Networks”
    A. Khan, L. Sun and E. Ifeachor,
    World Congress on Engineering, track on International Conference on Wireless Networks (ICWN), 1-3 July 2009, London, UK.
13. “PESQ and 3SQM measurement of voice quality over live 3G networks”
    M. Goudarzi, L. Sun, and E. Ifeachor,
    8^th International MESAQIN (Measurement of Speech, Audio and Video Quality in Network) Conference, Prague, June 11, 2009.
14. "Content Clustering-based Video Quality Prediction Model for MPEG4 Video Streaming over Wireless Networks"
    Asiya Khan, Lingfen Sun and Emmanuel Ifeachor
    IEEE ICC 2009 14-18 June 2009, Dresden, Germany.
15. "Impact of Video Content on Video Quality for Video over Wireless Networks" – BEST PAPER AWARD
    Asiya Khan, Lingfen Sun and Emmanuel Ifeachor
    Fifth International Conference on Autonomic and Autonomous Systems (ICAS), April 20 – 25, 2009 – Valencia, Spain.
16. "Open IMS Core with VoIP Quality Adaptation"
    I. Mkwawa, E. Jammeh, L. Sun, A. Khan and E. Ifeachor
    Fifth International Conference on Autonomic and Autonomous Systems (ICAS), April 20 – 25, 2009 – Valencia, Spain.
17. "Case Study of PESQ Performance in Live Wireless Mobile VoIP Environment"
    Z Qiao, L Sun and E Ifeachor
    IEEE PIMRC 2008 – VoIP Technologies Workshop, 15-18 September 2008, Cannes, France.
18. "An ANFIS-based Hybrid Video Quality Prediction Model for Video Streaming over Wireless Networks"
    A Khan, L Sun and E Ifeachor
    IEEE NGMAST 2008, 16-19 September 2008, Cardiff, Wales, UK.
19. "The ADAMANTIUM Multimedia Content Management System for Real Time Cross-Layer Adaptation of IPTV and VoIP Services over IMS"
    H. Koumaras, L. Sun, A. Kourtis
    TEMU 2008, Int. Conf. on Telecommunications and Multimedia, Ierapetra, Crete, Greece, 16-18 July 2008
20. "Range-based Mobility Estimations in MANETs with Application to Link Availability Prediction"
    Z Li, L Sun and E Ifeachor
    Proceedings of IEEE ICC 2007, 24-28 June, Glasgow, UK.
21. "Audiovisual Quality Assessment for 3G Networks in Support of eHealthcare Services"  
    A. Khan, Z. Li, L. Sun and E. Ifeachor
    Proceedings of the 3rd International Conference on Computational Intelligence in Medicine and Healthcare (CIMED 2007), July 25-27, Plymouth, UK, 2007 
22. "An Approach to Structured Knowledge Representation of Service-oriented Grids" (Poster) 
    P. Hu, L. Sun and E. Ifeachor
    Proceedings of UK e-Science Programme All Hands Meeting 2007 
23. "A  Model for Bioprofile over Grid in Support of eHealthcare"  
    P. Hu, A. Anastasiou, L. Sun and E. Ifeachor
    Proceedings of the 3rd International Conference on Computational Intelligence in Medicine and Healthcare (CIMED 2007), July 25-27, 2007 
24. "Adaptive Multi-Copy Routing for Intermittently Connected Mobile Ad Hoc Networks"
    Z Li, L Sun and E Ifeachor
    Proceedings of IEEE Globecom 2006, 27 Nov - 1 Dec 2006, San Francisco, USA.
25. "The BIOPATTERN Grid – Implementation and Applications" [PPT]
    P. Hu, L. Sun,  C. Goh, B. Hamadicharef, E. Ifeachor, I. Barbounakis, M. Zervakis, N. Nurminen, A. Varri, R. Fontanelli, S. Di Bona, D. Guerri, S. La Manna, K. Cerbioni, E. Palanca, A. Starita 
    Proceedings of UK e-Science Programme All Hands Meeting 2006 (AHM2006)
26. "Bioprofiling over Grid for eHealthcare"
    L. Sun, P. Hu, C. Goh, B. Hamadicharef, E. Ifeachor, I. Barbounakis, M. Zervakis, N. Nurminen, A. Varri, R. Fontanelli, S. Di Bona, D. Guerri, S. La Manna, K. Cerbioni, E. Palanca, A. Starita 
    Proceedings of HealthGrid 2006, June 7-9, Valencia, SPAIN. 
27. "Bioprofiling over Grid for Early Detection of Dementia"  (Invited Paper)
    L. Sun, P. Hu, C. Goh, B. Hamadicharef, M. Hess, E. Ifeachor, I. Barbounakis, M. Zervakis, N. Nurminen, A. Varri
    Proceedings of INFOSCALE 2006, May 29 - June 1, Hong Kong. 
28. "Track-based Hybrid Service Discovery in Mobile Ad-hoc Networks" [PPT]
    Z Li, L Sun and E Ifeachor
    Proceedings of the 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC' 2005), September 2005, Berlin, Germany
29. "The Impact of Grid on Healthcare"  
    L Sun and E Ifeachor
    Proceedings of Second International Conference on Computational Intelligence in Medicine and Healthcare (CIMED 2005) 29th June - 1st July 2005, Costa da Caparica, Lisbon, Portugal
30. "Runtime Estimation of Parallel Applications in Computational Grids"  
    P Hu, Z Qiao, L Sun and E Ifeachor
    Proceedings of Second International Conference on Computational Intelligence in Medicine and Healthcare (CIMED 2005) 29th June - 1st July 2005, Costa da Caparica, Lisbon, Portugal
31. "Challenges of Mobile Ad-hoc Grids and their Applications in eHealthcare" [PPT] 
    Z Li, L Sun and E Ifeachor
    Proceedings of Second International Conference on Computational Intelligence in Medicine and Healthcare (CIMED 2005) 29th June - 1st July 2005, Costa da Caparica, Lisbon, Portugal
32. "New Models for Perceived Voice Quality Prediction and their Applications in Playout Buffer Optimization for VoIP Networks" [PPT][tracedata]
    L Sun and E Ifeachor
    Proceedings of IEEE International Conference on Communications (IEEE ICC 2004), Paris, France, June 2004, pp.1478 - 1483. Selected in Tech Focus on VoIP in Jan 2005 by IEEE Communications Society.
33. "A New Method for VoIP Quality of Service Control Based on Combined Adaptive Sender Rate and Priority Marking"
    Z Qiao, L Sun, N Heilemann and E Ifeachor
    Proceedings of IEEE International Conference on Communications (IEEE ICC 2004), Paris, France, June 2004, pp.1473 - 1477. Selected in Tech Focus on VoIP in Jan 2005 by IEEE Communications Society. 
34. "New Methods for Voice Quality Evaluation for IP Networks" [PPT]
    L Sun and E Ifeachor
    Proceedings of the 18th International Teletraffic Congress (ITC18), Berlin, Germany, 31 August - 5 September 2003, pp. 1201 - 1210.
35. "Perceived Speech Quality Driven Retransmission Mechanism for Wireless VoIP"
    Z Li, L Sun, Z Qiao and E Ifeachor
    Proceedings of IEE Fourth International Conference on 3G Mobile Communication Technologies, London, UK, June 2003, pp. 395 - 399.
36. "Prediction of Perceived Conversational Speech Quality and Effects of Playout Buffer Algorithms" 
    L Sun and E Ifeachor
    Proceedings of IEEE International Conference on Communications (IEEE ICC'03), Anchorage, USA, May 2003, pp. 1-6.
37. "Perceived Speech Quality Prediction for Voice over IP-based Networks" [PPT]
    L Sun and E Ifeachor
    Proceedings of IEEE International Conference on Communications (IEEE ICC'02), New York, USA, April 2002, pp.2573-2577.
38. "Subjective and Objective Speech Quality Evaluation under Bursty Losses" 
    L Sun and E Ifeachor
    Proceedings of On-line Workshop Measurement of Speech and Audio Quality in Networks (MESAQIN 2002), Prague, Czech Republic, Jan. 2002, pp.25 -- 29. 
39. "Impact of Packet Loss Location on Perceived Speech Quality" [PPT]
    L Sun, G Wade, B Lines and E Ifeachor
    Proceedings of 2nd IP-Telephony Workshop (IPTEL '01), Columbia University, New York, April 2001, pp.114-122. 
40. "VoIP Speech Quality Simulation and Evaluation" 
    L Sun, G Wade, B Lines, D Le Foll and E Ifeachor.
    Proceedings of the Second International Network Conference (INC 2000), Plymouth, UK, July 2000, pp.157-164. 
41. "End-to-end Speech Quality Analysis for VoIP" 
    L Sun, G Wade, B Lines, E Ifeachor and D Le Foll
    Proceedings of IEE 16th UK Teletraffic Symposium on Management of Quality of Service, Harlow, UK, May 2000, pp. 23/1 -- 23/6. 

 

Reports & invited lectures

   Invited talk on “Bioprofiling over Grid” at NCAF (Natural Computing Applications Forum) Conference at Aston University, UK 13-14 January 2005.

  Invited talk on “VoIP and Voice Quality Measurement”(ppt), Acterna, Plymouth, 4 Feb 2005.

  Invited to join Panel on HealthGrid, EGEE-II First Conference, Geneva, Switzerland, 25 Sep 2006.

  Invited talk on "Objective Assessment of Speech Quality for VoIP” (pdf), JDSU (previously Acterna), 15 Nov 2006.

 

Conferences organised
Publicity Co-Chair, IEEE ICME 2011 Technical Program Committee

Co-Chair of Post & Demo, IEEE Globecom 2010 Technical Program Committee 

TPC Member, IEEE Globecom (2008, 2007), Chinacom (2008, 2007), Accessnets 2007, NAS 2007.

Organiser for “Bioprofiling over Grid” Joint Workshop in Conjunction with CIMED 2005, 28 June 2005, Lisbon, Portugal. 

Organiser for "Workshop on e-Infrastructure and Grid Computing", 31 Jan 2007, Plymouth, gave a talk on “From BIOPATTERN to Bioprofiling over Grid for eHealthcare” (pdf) at the Workshop. 

Links

Research Group Home page:

http://www.cscan.org/
http://www.tech.plym.ac.uk/spmc/
 
Home page: 

http://www.tech.plym.ac.uk/spmc/people/lfsun/