Dr John Schormans

John Schormans

Senior Lecturer

School of Electronic Engineering and Computer Science
Queen Mary University of London

Research

packet networks, probabilistic performance analysis and evaluation of packet networks

Interests

My main focus is on analysis, simulation and measurement of packet-based networks, in wired and wireless scenarios. This includes evaluating QoE as well as more traditional network performance metrics.

Publications

solid heart iconPublications of specific relevance to the Centre for Networks, Communications and Systems

2023

Relevant PublicationSignificance of Cross-Correlated QoS Configurations for Validating the Subjective and Objective QoE of Cloud Gaming Applications
Ahmad N, Wahab A, Schormans J and Arnab AA
Future Internet, Mdpi vol. 15 (2) 
02-02-2023

2022

Relevant PublicationComparative QoE Study of VoD and Passive Gaming Videos using Cross-Correlated QoS Metrics
Ahmad N, Wahab A, Schormans J and Arnab AA
Proceedings of the 20th ACM International Symposium on Mobility Management and Wireless Access
24-10-2022
Relevant PublicationA Novel Objective Video Quality Assessment Metric For Cloud Gaming Applications
Ahmad N, Wahab A, Schormans J and Arnab AA
2022 International Conference on Communications, Computing, Cybersecurity, and Informatics (CCCI)
19-10-2022

2021

bullet iconSubjective Quality Assessment for Cloud Gaming
Wahab A, Ahmad N, Martini MG and Schormans J
J — Multidisciplinary Scientific Journal, Mdpi vol. 4 (3), 404-419.  
05-08-2021
bullet iconAnalysis of the Cost of Varying Levels of User Perceived Quality for Internet Access
Arnab AA, Raj SMRH, Schormans J, Mukta SJ and Ahmad N
In Intelligent Computing and Optimization, Springer Nature 393-405.  
01-01-2021

2020

bullet iconDirect propagation of network QoS distribution to subjective QoE for Video on Demand applications using VP9 codec
Wahab A, Ahmad N and Schormans J
2020 International Wireless Communications and Mobile Computing (IWCMC)
15-06-2020
bullet iconVariation in QoE of passive gaming video streaming for different Packet Loss Ratios
Wahab A, Ahmad N and Schormans J
2020 Twelfth International Conference on Quality of Multimedia Experience (QoMEX)
26-05-2020
bullet iconStatistical error propagation affecting the quality of experience evaluation in video on demand applications
Wahab A, Ahmad N and Schormans J
Applied Sciences (Switzerland), Mdpi Ag vol. 10 (10) 
25-05-2020
bullet iconProximity as a Service for the Use Case of Access Enhancement via Cellular Network-Assisted Mobile Device-to-Device test
Guo T, Schormans J, Lexi X, Jinze W and Cao Y
Ieee Access, Institute of Electrical and Electronics Engineers (Ieee) vol. 4, C2-2.  
10-02-2020
bullet iconProximity as a Service for the Use Case of Access Enhancement via Cellular​ Network-Assisted Mobile​Device-to-Device
Schormans J, Guo TIANHAO, XU L, WU J and CAO Y
Ieee Access, Institute of Electrical and Electronics Engineers (Ieee) 
10-02-2020
bullet iconPaper title: Direct propagation of network QoS distribution to subjective QoE for Video on Demand applications using VP9 codec.
Schormans J, Wahab A and Ahmad N
IWCMC 2020
01-01-2020
bullet iconVariation in QoE of Passive Gaming Video Streaming for Different Packet Loss Ratios
Schormans J, Wahab A and Ahmad N
QoMEX 2020
01-01-2020
bullet iconImportance of Cross-Correlation of QoS metrics in Network Emulators to Evaluate QoE of Video Streaming Applications
Schormans J, Ahmad N and Wahab A
11th International Conference on Network of the Future (NoF 2020)
01-01-2020

2018

bullet iconUser experience aware active queue management in cellular networks
Dai Y, Wijeratne V, Chen Y and Schormans J
Journal of Communications, Engineering and Technology Publishing vol. 13 (10), 588-593.  
01-10-2018
bullet iconVideo-on-demand QoE Evaluation Across Different Age- Groups and Its Significance for Network Capacity
Roshan M, Schormans JA and Ogilvie R
Icst Transactions On Mobile Communications and Applications, European Alliance For Innovation N.O. vol. 3 (9) 
10-01-2018

2017

bullet iconCAP: A ContAct based Proximity service via opportunistic device-to-device relay
Guo T, Huang G, Schormans J, Wang T and Cao Y
ISWCS 2017
14-11-2017
bullet iconChannel Quality Aware Active Queue Management
SCHORMANS JA
Computer Science and Electronic Engineering (CEEC), 2017
27-09-2017
bullet iconHolistic assessment of call centre performance
Smith EA and Schormans JA
Iet Networks 
18-07-2017
bullet iconQoS-Aware Energy-Efficient Cooperative Scheme for Cluster-Based IoT Systems
Song L, Chai KK, Chen Y, Schormans J, Loo J and Vinel A
Ieee Systems Journal vol. 11 (3), 1447-1455.  
23-06-2017
bullet iconOptimal design of experiments on connected units with application to social networks
Parker BM, Gilmour SG and Schormans J
Journal of The Royal Statistical Society Series C-Applied Statistics vol. 66 (3), 455-480.  
28-02-2017
bullet iconEnergy-Aware Restricted Access Window Control with Retransmission Scheme for IEEE 802.11AH (Wi-Fi HaLow) Based Networks
Wang Y, Chai KK, Chen Y, Schormans J and Loo J
2017 13th Annual Conference on Wireless On-demand Network Systems and Services (WONS)
01-02-2017

2016

bullet iconCooperative Coalition Selection for Quality of Service Optimization in Cluster-Based Capillary Networks
Song L, Chai KK, Chen Y, Loo J and Schormans J
Ieee Systems Journal, Institute of Electrical and Electronics Engineers (Ieee) vol. 12 (2), 1700-1708.  
07-12-2016
bullet iconEnergy-Delay Aware Restricted Access Window with Novel Retransmission for IEEE 802.11ah Networks
Wang Y, Chai KK, Chen Y, Schormans J and Loo J
2016 IEEE Global Communications Conference (GLOBECOM)
01-12-2016
bullet iconCross‐layer queueing analysis for aggregated ON–OFF arrivals with adaptive modulation and coding
Han X and Schormans J
Iet Communications, Institution of Engineering and Technology (Iet) vol. 10 (17), 2336-2343.  
01-11-2016
bullet iconTwo-Level Game for Relay-Based Throughput Enhancement via D2D Communications in LTE Networks
Zhao J, Chai KK, Chen Y, Schormans J and Alonso-Zarate J
2016 IEEE International Conference on Communications (ICC)
01-05-2016
bullet iconQPSO-Based Energy-Aware Clustering Scheme in the Capillary Networks for Internet of Things Systems
Song L, Chai KK, Chen Y, Loot J, Jimaa S and Schormans J
2016 IEEE Wireless Communications and Networking Conference
01-04-2016
bullet iconEnergy Efficiency Cooperative Scheme for Cluster-based Capillary Networks in Internet of Things Systems
Song L, Chai KK, Chen Y and Schormans J
2016 IEEE 27th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
01-01-2016

2015

bullet iconJoint mode selection and resource allocation for machine‐type D2D links
Zhao J, Chai KK, Chen Y, Schormans J and Alonso‐Zarate J
Transactions On Emerging Telecommunications Technologies, Wiley vol. 28 (2) 
11-11-2015
bullet iconQoS-aware Energy Efficient Cooperative Scheme for Cluster-based IoT Systems
SCHORMANS JA
Ieee Systems Journal, Institute of Electrical and Electronics Engineers 
11-11-2015
bullet iconEnergy-Aware Adaptive Restricted Access Window for IEEE 802.11AH Based Smart Grid Networks
Wang Y, Li Y, Chai KK, Chen Y and Schormans J
2015 IEEE International Conference on Smart Grid Communications (SmartGridComm)
01-11-2015
bullet iconEnergy-Aware Adaptive Restricted Access Window for IEEE 802.11ah Based Networks
Wang Y, Li Y, Chai KK, Chen Y and Schormans J
2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
01-08-2015
bullet iconSelf-organising cluster-based cooperative load balancing in OFDMA cellular networks
Xu L, Chen Y, Chai KK, Schormans J and Cuthbert L
Wireless Communications and Mobile Computing vol. 15 (7), 1171-1187.  
01-05-2015
bullet iconOptimal design of measurements on queueing systems
Parker BM, Gilmour S, Schormans J and Maruri-Aguilar H
Queueing Systems, Springer Us vol. 79 (3-4), 365-390.  
01-04-2015
bullet iconEnergy efficient cooperative MISO scheme for cluster-based M2M capillary networks
Song L, Chai KK, Chen Y and Schormans J
2014 International Symposium on Wireless Personal Multimedia Communications (WPMC)
19-01-2015
bullet iconIncreasing throughput in IEEE 802.11 by optimal selection of backoff parameters
Parker BM, Schormans JA and Gilmour SG
Iet Networks, Institution of Engineering and Technology (Iet) vol. 4 (1), 21-29.  
01-01-2015
bullet iconUtility based framework for optimal network measurement
Parker BM, Gilmour SG and Schormans J
Iet Networks, Institution of Engineering and Technology (Iet) vol. 4 (1), 10-20.  
01-01-2015
bullet iconBounds on Accuracy when Estimating the Loss Probability in a Packet Buffer
Wahid AA and Schormans JA
2015 7th Computer Science and Electronic Engineering Conference (CEEC)
01-01-2015
bullet iconFnergy-aware Adaptive Restricted Access Window for IEEE 802.11ah Based Networks
Wang Y, Li Y, Chai KK, Chen Y and Schormans J
 
01-01-2015
bullet iconJoint mode selection and radio resource allocation for D2D communications based on dynamic coalition formation game
Zhao J, Chai KK, Chen Y, Schormans J and Alonso-Zarate J
 
01-01-2015

2014

bullet iconChannel-Aware Optimised Traffic Shifting in LTE-Advanced Relay Networks
Xu L, Luan Y, Chao K, Cheng X, Zhang H and Schormans J
2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication (PIMRC)
01-01-2014

2013

bullet iconBounding the Maximum Sampling Rate when Measuring PLP in a Packet Buffer
Wahid AA and Schormans J
2013 5th Computer Science and Electronic Engineering Conference (CEEC)
01-09-2013
bullet iconPerformance comparisons between cellular-only and cellular/WLAN integrated systems based on analytical models
Song G, Yang L, Wu J and Schormans J
Frontiers of Computer Science vol. 7 (4), 486-495.  
01-08-2013
bullet iconSelf‐organising cluster‐based cooperative load balancing in OFDMA cellular networks
Xu L, Chen Y, Chai KK, Schormans J and Cuthbert L
Wireless Communications and Mobile Computing, Wiley vol. 15 (7), 1171-1187.  
21-07-2013
bullet iconUser Relay assisted Traffic Shifting in LTE-Advanced Systems
Xu L, Chen Y, Chai KK, Liu D, Yang S and Schormans JA
, Editors: Fettweis G. 77th IEEE Vehicular Technology Conference (VTC2013-Spring) Dresden, Germany 2 Jun 2013 - 5 Jun 2013
01-01-2013
bullet iconEvaluating QoE in Cognitive Radio Networks for Improved Network and User Performance
Zhong B, Schormans J and Bodanese E
Ieee Communications Letters vol. 17 (12), 2376-2379.  
01-01-2013

2012

bullet iconErlang's fixed-point approximation for performance analysis of HetNets
Song G, Wu J, Schormans J and Cuthbert L
Journal of Applied Mathematics vol. 2012 
20-06-2012
bullet iconA performance study of hierarchical heterogeneous wireless integrated networks
Song G, Wu J, Schormans J, Yang L and Cuthbert L
Applied Mathematics and Information Sciences vol. 6 (2 SUPPL.) 
01-04-2012
bullet iconA Performance Study of Hierarchical Heterogeneous Wireless Integrated Networks
Song G, Wu J, Schormans J, Yang L and Cuthbert L
Applied Mathematics & Information Sciences vol. 6 (2), 497S-504S.  
01-01-2012
bullet iconCooperative load balancing for OFDMA cellular networks
Lexi Xu , Yue Chen , Kok Keong Chai , Tiankui Zhang , Schormans J and Cuthbert L
European Wireless, 2012. EW. 18th European Wireless Conference
01-01-2012

2011

bullet iconDesign of Experiments for Categorical Repeated Measurements in Packet Communication Networks
SCHORMANS JA, Parker BM and Gilmour SG
Technometrics vol. 53 (4), 339-352.  
01-01-2011
bullet iconUser-Vote Assisted Self-Organizing Load Balancing for OFDMA Cellular Systems
Xu L, Chen Y, Schormans J, Cuthbert L and Zhang T
 
01-01-2011
bullet iconPacket-delay invariance to scheduling under congestion
Wijeratne V and Schormans J
IET International Conference on Communication Technology and Application (ICCTA 2011)
01-01-2011

2010

bullet iconQoS aware mixed traffic packet scheduling in OFDMA-based LTE-advanced networks
Kausar R, Chen Y, Chai KK, Cuthbert L and Schormans J
 
01-12-2010

2009

bullet iconError analysis in accelerated session-level MANET simulations
Lu S and Schromans JA
Simulation Modelling Practice and Theory, Elsevier vol. 17 (7), 1171-1198.  
01-08-2009
bullet iconMeasurement of packet loss probability by optimal design of packet probing experiments
Parker BM, Gilmour SG and Schormans J
Iet Commun vol. 3 (6), 979-991.  
01-06-2009
bullet iconApplication of the generalised ballot theorem for evaluation of performance in packet buffers with non-first in first out scheduling
Ariffin SHS, Schormans JA and Ma AHI
Iet Commun vol. 3 (6), 933-944.  
01-06-2009
bullet iconSimulation, Analysis and Measurement of Broadband Network Traffic
Schormans J
Iet Commun vol. 3 (6), 883-886.  
01-06-2009
bullet iconAnalysis, simulation and measurement in large-scale packet networks
Mondragon R, Moore A, Pitts J and Schormans J
Iet Commun vol. 3 (6), 887-905.  
01-06-2009
bullet iconEvaluating overflow probability for voice over internet protocol buffer dimensioning
Amaradasa V, Schormans J, Pitts J and Leung CM
Iet Commun vol. 3 (4), 636-643.  
01-04-2009
bullet iconQueueing Network Topology for Modelling Cellular/Wireless LAN Interworking Systems
SCHORMANS JA, Song and Cuthbert LG
In Performance Modelling and Analysis of Heterogeneous Networks, 1–17, River Publishers, Editors: Kouvatsos D. 
01-01-2009

2008

bullet iconTime-stepped approach for accelerated simulation of mobile ad hoc networks
Lu S and Schormans JA
Iet Commun vol. 2 (5), 609-620.  
01-05-2008
bullet iconAN ANALYTICAL STUDY OF PRECEDENCE AND QOE FOR VOICE SERVICE IN DEGRADED IP NETWORKS
Pitts JM and Schormans JA
 
01-01-2008
bullet iconModelling Cellular/Wireless LAN Integrated Systems with Multi-Rate Traffic Using Queueing Network
Song GZ, Cuthbert L and Schormans J
 
01-01-2008
bullet iconOpen Networks of Loss Systems in the Modelling of Tow-Tier Heterogeneous Hierarchical Overlay Wireless Networks
Song GZ, Cuthbert L and Schormans J
 
01-01-2008

2007

bullet iconWhole System Modelling and What-If QoS Evaluation of Enterprise VoIP Networks
PITTS JM, Schormans JA and Yang Q
Networking and Electronic Commerce Research Conference 2007 (NAEC 2007), Italy, October 2007
01-10-2007
bullet iconAccuracy of packet loss monitoring over networked CPE
Hasib M, Schormans J and Timotijevic T
Iet Commun vol. 1 (3), 507-513.  
01-06-2007
bullet iconA cross layer analysis for voice over WiFi communications in multihop wireless networks
Stewart R, Xiaoguang L, Schormans JA and Hasib M
International Journal of Mobile Network Design and Innovation, Inderscience Publishers vol. 2 (3/4) 
01-01-2007
bullet iconUsing AF-PHB BOUDICCA configuration for reliable real-time precedence-based SLAs in degraded IP networks
Pitts JM, Yang Q and Schormans JA
 
01-01-2007

2006

bullet iconExcess-rate queuing theory for M/M/1/RED with application to VolP QoS
Pitts JM, Wang X, Yang Q and Schormans JA
Electron Lett vol. 42 (20), 1188-1189.  
28-09-2006
bullet iconAccelerated Simulation of a GPS Scheduler Using Traffic Aggregation
SCHORMANS JA and Amaradasa V
HETNETs '06 - 4th International Working Conference, Performance Modelling and Evaluation of Heterogeneous Networks, Ilkley, West Yorkshire, UK - September 2006
01-09-2006
bullet iconAdvanced Receiver Algorithms for Multi-Layered Space-Time Block Codes
SCHORMANS JA, Chen X and Raza A
Ultra Wideband Systems, Technologies and Applications, 2006. The Institution of Engineering and Technology Seminar on April 2006
01-04-2006
bullet iconSSIM: A Multi-Resolution Fluid Traffic Simulator for MANETs
SCHORMANS JA and Lu S
The Third International Conference on Mobile Computing and Ubitquitous Networking (ICMU2006)
01-01-2006
bullet iconConfiguring IP QoS mechanisms for graceful degradation of real-time services
Pitts JM and Schormans JA
 
01-01-2006

2005

bullet iconConfiguring Packet Transport of Emerging Real-Time Services for Graceful Degraduation Under Congestion
PITTS JM and Schormans JA
IEEE Bandwidth Management Workshop XI, October 2005
01-10-2005
bullet iconErratum: Probing limitations for packet loss probability measurement on buffered access links (Electronics Letters (2004) 40:20 (1315-1316))
Hasib M, Schormans J and Pitts J
Electronics Letters vol. 41 (17) 
18-08-2005
bullet iconProbing limitations for packet loss probability measurement on buffered access links (vol 40, pg 1315, 2004)
Hasib M, Schormans J and Pitts J
Electron Lett vol. 41 (17), 987-987.  
18-08-2005
bullet iconFast, stable simulation of power-law packet traffic using concatenated acceleration techniques
Ma AHI and Schormans JA
Iee P-Commun vol. 152 (4), 420-426.  
01-08-2005
bullet iconUbiquitous packet networking and data compression
Schormans J
Electron Lett vol. 41 (9), 523-525.  
28-04-2005
bullet iconMeasurement-based end to end latency performance prediction for SLA verification
Leung CM and Schormans JA
J Syst Software vol. 74 (3), 243-254.  
01-02-2005
bullet iconFuture Simulation Acceleration of Packet Networks Using GPS Scheduling
SCHORMANS JA and Amaradasa V
PGNET '05 - 6th Annual PostGraduate Symposium on the Convergence of Telecommunications, Networking & Broadcasting, Liverpool, UK - 2005
01-01-2005

2004

bullet iconProbing limitations for packet loss probability measurement on buffered access links
Hasib M, Schormans J and Pitts J
Electron Lett vol. 40 (20), 1315-1316.  
30-09-2004
bullet iconLayered Sapce-Time Block Codes with Interactive Decoding
Schormans JA, CHEN X and Raza A
London Communications Symposium 2004, London, UK - 13-14 September 2004
13-09-2004
bullet iconKIL-BLAST: diversity and multiplexing trade-off for layered space-time architectures with channel estimation error
Raza A, Schormans JA and Chen X
Electron Lett vol. 40 (12), 747-749.  
10-06-2004
bullet iconA Buffer with Two Priority Inputs
SCHORMANS JA and Ariffen SHS
2004 IEEE International Conference on Communications (ICC, Paris, June 2004)
01-06-2004
bullet iconSo You Think You Can Measure IP QoS?
Pitts JM and SCHORMANS JA
2nd IEE Conference on QoS in IP Networks, Savoy Place, 2-3 March 2004
02-03-2004
bullet iconSo you think you can measure IP QoS
PITTS JM and Schormans JA
IEE Telecommunications QoS Conference, March 2004
01-03-2004
bullet iconAccuracy of measurement techniques supporting QoS in packet-based intranet and extranet VPNs
SCHORMANS JA, Leung CM and Timotijevic T
Iee Proceedings - Communications: Special Edition On Vpns and Broadband Technology vol. 151 (1), 89-94.  
01-02-2004
bullet iconSuperhighways technology and broadband VPN
Schormans J
Iee P-Commun vol. 151 (1), 59-61.  
01-02-2004
bullet iconMeasurement for Guaranteeing QoS in Braodband Multiservice Networks
SCHORMANS JA and LEUNG CM
In Mobile and Wireless Systems Beyond 3g: Managing New Business Opportunities, Irm Press, Editors: Pagani P. 
01-01-2004
bullet iconEfficient accelerated simulation technique for packet switched networks: A buffer with two priority inputs.
Ariffin SHS and Schormans JA
 
01-01-2004
bullet iconMeasurement for guaranteeing QoS in broadband multiservice networks
SCHORMANS JA and Leung CM
In Mobile and Wireless Systems Beyond 3g: Managing New Business Opportunities, Professor Pagani (Ed), Idea Group, Inc 
01-01-2004

2003

bullet iconBandwidth Overhead of Measurement Technology Used for Guaranteeing QoS in Packet Networks
SCHORMANS JA and Timotijevic T
International Network Optimization Conference (INOC), Paris, France, October 2003
01-10-2003
bullet iconAnalytical technique for accelerating the simulation of packet networks
Schormans J, Liu E, Stewart R and Cuthbert L
Iee P-Commun vol. 150 (5), 341-346.  
01-10-2003
bullet iconAggregation technique for networks with power law traffic and application to accelerated simulation
Ma A, Schormans J and Cuthbert L
Iee P-Commun vol. 150 (3), 177-183.  
01-06-2003
bullet iconAccurate decay rate prediction for burst-scale queueing in packet buffers
Leung CM, Schormans JA, Pitts JM and Woolf M
Electron Lett vol. 39 (2), 253-254.  
23-01-2003
bullet iconAccelerated Simulation Method for Power-Law Traffic and Non-FIFO Scheduling
SCHORMANS JA and Ariffin SHS
London Communications Symposium, University College, London, 2003
01-01-2003
bullet iconBandwidth overhead of probe technology guaranteeing QoS in packet networks
SCHORMANS JA and Timotijevic T
Electronic Letters vol. 39 (10), 253-254.  
01-01-2003
bullet iconEvaluating the accuracy of active measurement of delay and loss in packet networks
Schormans JA and Timotijevic T
, Editors: Marshall A and Agoulmine N. 
01-01-2003
bullet iconSimulation Acceleration Techniques for Mobile Ad Hoc Networks
Lu S and SCHORMANS JA
London Communications Symposium, University College London, 2003
01-01-2003
bullet iconLimitations of Passive and Active Measurement in Packet Networks
SCHORMANS JA and Hasib M
London Communications Symposium, University College London, 2003
01-01-2003

2002

bullet iconMeasurement-based queue length distribution estimation for power-law traffic
Leung CM, Schormans JA and Ma AHI
Electron Lett vol. 38 (24), 1608-1610.  
21-11-2002
bullet iconA Neural Network Techniques in ATM Congestion Control
SCHORMANS JA and Al-Hammadi AS
MESM'02, 28-30 September 2002, American University Sharjah, Sharjah, UAE
28-09-2002
bullet iconMeasurement-based traffic characteristic estimation for QoS-oriented IP networks
Leung CM and Schormans JA
 
01-07-2002
bullet iconSpace-time Block Coded OFDM without Guarded Intervals
Schormans JA, CHEN X and Raza A
9th IEEE International Conference on Telecommunications, Beijing, China - 23-26 June 2002
23-06-2002
bullet iconAccelerated Simulation Modelling of Power-law Traffic via Aggregation
SCHORMANS JA and Ma HI
ITC2002, Beijing. China
01-06-2002
bullet iconEfficient Simulation Modelling for Long Range Dependent Traffic
SCHORMANS JA and Ma HI
Presented at the Fourth Workshop on Rare Simulation and related Combinatorial Optimization Problems (RESIM/COP'02), April 11-12, 2002, Madrid, Spain
11-04-2002
bullet iconHybrid technique for analysis of multiplexed power-law traffic in broadband networks
Ma AHI and Schormans JA
Electron Lett vol. 38 (6), 295-297.  
14-03-2002
bullet iconA new charging scheme for ATM based on QoS
Miah B, Scharf EM, Cuthbert LG and Schormans JA
Int J Commun Syst vol. 15 (1), 85-100.  
01-02-2002
bullet iconA Neuro-Fuzzy Congestion Controller in a Prioritised ATM Switch
SCHORMANS JA and Al-Hammadi AS
First International ICSC Conference on Neuro-Fuzzy Technologies, January 16-19, 2002 at University of Havana, Cuba
16-01-2002
bullet iconMeasurement-Based Traffic Characteristic Estimation for QoS Oriented IP Networks.
SCHORMANS JA and Leung CM
The Journal of The Communications Network. vol. 1 (2) 
01-01-2002
bullet iconOverflow Probability in Shared Cell Switched Buffers
SCHORMANS J and Pitts JM
Ieee Communications Letters, Ieeexplore vol. 4 (5), 167-169.  
01-01-2002
bullet iconAccelerated simulation modelling of Power-law traffic via aggregation
Ma AHI and Schormans JA
ICT02 Beijing, China 1 Jan 1970
01-01-2002
bullet iconON/OFF Pareto Distributed Source at Burst Level: A Study of Fast Simulation Methods for Packet Network
SCHORMANS JA and Ariffin S
PGNET2002
01-01-2002
bullet iconEnd-to-end performance in real time IP networks with self-similar behavior.
Pitts JM, ARROWSMITH DK, Schormans JA, Mondragon DK and Woolf RJ
Ieee Trans On Accoustics, Speech, and Signal Processing. vol. 4 
01-01-2002
bullet iconEnd to end performance in real time IP networks with self-similar behaviour
Pitts JM, Schormans JA, Woolf M, Mondragon RJ and Arrowsmith DK
 
01-01-2002
bullet iconNon-intrusive Measurement for QoS Inference
SCHORMANS JA and Leung CM
PGNET2002
01-01-2002
bullet iconMeasurement-based end to end latency performance prediction for SLA verification
Leung CM and Schormans JA
, Editors: Luijten R, Wong E, Makki K and Park EK. 
01-01-2002

2001

bullet iconApplications of Neural Networks to Accelerated Simulation of Internet Type WANs
CUTHBERT LG, Schormans JA, Phillips CI, Liu E and Stoneley G
17th International Telecommunications Congress, Brazil
01-12-2001
bullet iconIntroduction to IP and ATM Design and Performance
Pitts JM and Schormans JA
 
12-10-2001
bullet iconFrom Erlangs to excess rate
Schormans JA and Pitts JM
J Inst Brit Telecomm vol. 2, 54-60.  
01-10-2001
bullet iconAccurate Dimensioning of Service Level Agreements in Voice over IP Networks.
SCHORMANS JA and Stewart RA
Journal of The Institution of British Telecommunications Engineers vol. 2 (3), 109-111.  
01-09-2001
bullet iconTight bounds for the tail of the packet waiting time distribution in buffered networks
Pitts JM, Schormans JA, Scharf EM and Pearmain AJ
Int J Commun Syst vol. 14 (7), 715-723.  
01-09-2001
bullet iconAccurate dimensioning of service level agreements in voice-over-IP networks
Stewart R and Schormans J
 
01-07-2001
bullet iconA Hybrid Technique for Accelerated Simulation of ATM Networks and Network Elements
Cuthbert LG, Pitts JM, SCHORMANS JA and Liu E
Acm Transactions On Modeling and Computer Simulation (Tomacs) vol. 11 (2), 182-205.  
01-04-2001
bullet iconFuzzy congestion controller in a prioritised ATM switch
Al-Hammadi A and Schormans J
Iee P-Commun vol. 148 (2), 57-62.  
01-04-2001
bullet iconAccurate delay bounds for real-time IP services in presence of variable packet size
Pitts JM, Schormans JA, Phillips CI and Griffiths JM
Electron Lett vol. 37 (3), 166-167.  
01-02-2001
bullet iconA Fast Simulation Method for Modelling IP Networks
SCHORMANS JA and Ma H
IEE 17th UK Teletraffic Symposium, Dublin 2001
01-01-2001
bullet iconPrediction Bounds for End-to-End Delay Analysis in Enterprise IP Networks
SCHORMANS JA and Stewart R
IEE 17th UK Teletraffic Symposium, Dublin, 2001
01-01-2001

2000

bullet iconAnalysis of local internet / enterprise networking multiplexer for on-off VoIP sources
SCHORMANS JA, Stewart R, Pitts JM, Scharf EM, Pearmain A and Phillips CI
Electronics Letters vol. 36 (21), 1825-1826.  
01-10-2000
bullet iconAccess flow control scheme for ATM networks usingadaptive linear prediction
Al-Hammadi A and Schormans J
Electronics Letters, Institution of Engineering and Technology (Iet) vol. 36 (17), 1509-1510.  
17-08-2000
bullet iconATM Level Performance Analysis on a DS-CDMA Satellite Link using DTX
SCHORMANS JA and Timotijevic T
Iee Proc. Comms vol. 147 (1) 
01-02-2000
bullet iconDesign rules and equivalent capacity for a Pareto source
SCHORMANS JA, Pitts JM, Ma A, Scharf E, Pearmain A and Phillips CI
Electronics Letters vol. 36 (15), 1274-1275.  
01-01-2000
bullet iconResource allocation strategy for ATM-based satellite systems
SCHORMANS JA, Awadalla H and Cuthbert LG
Electronics Letters vol. 36 (3), 281-282.  
01-01-2000
bullet iconAccess flow control scheme for ATM networks using adaptive linear prediction
SCHORMANS JA
Electronics Letters, Iee/Iet vol. 36 (7), 1274-1275.  
01-01-2000
bullet iconBuffer Overflow Probability for Multiplexed On-Off VoIP Sources
SCHORMANS JA, Pitts JM, Scharf E, Pearmain A and Phillips CI
Electronics Letters, Iee/Iet vol. 36 (6), 523-524.  
01-01-2000
bullet iconDesign rules for buffering overlapping Pareto processes in packetised networks
SCHORMANS J, Pitts JM, Mondragon R, Scharf E, Pearmain A and Phillips CI
Electronics Letters, Ieeexplore vol. 36 (12), 1086-1088.  
01-01-2000
bullet iconA novel fast simulation method for ATM networks
Liu EJ, Schormans J, Cuthbert L and Stoneley G
 
01-01-2000
bullet iconDesign rules and equivalent capacity for buffering of Pareto source
Ma AHI, Schormans JA, Pitts JM, Scharf EM, Pearmain AJ and Phillips CI
Elec Lett vol. 36 (15), 1274-1275.  
01-01-2000
bullet iconNovel fast simulation method for ATM networks
Liu E, Schormans J, Cuthbert L and Stoneley G
Ieee Atm Workshop, Proceedings, 387-393.  
01-01-2000
bullet iconNeural network in fast simulation modelling
Liu E, Cuthbert L, Schormans J and Stoneley G
Proceedings of the IEEE-INNS-ENNS International Joint Conference on Neural Networks. IJCNN 2000. Neural Computing: New Challenges and Perspectives for the New Millennium
01-01-2000

1999

bullet iconAnalytic technique for accelerating simulation of generic network traffic
Schormans J, Liu E, Cuthbert L and Stoneley G
Electronics Letters vol. 35, 2168 -2170-2168 -2170.  
01-12-1999
bullet iconResource partitioning and management of inter-networks for heterogeneous services
Pitts J and Schormans J
 
01-12-1999
bullet iconEnd to end QoS bounds for RTP based service sub-networks
Pitts J and Schormans J
 
01-12-1999
bullet iconImproving the delay performance of ‘besteffort’ traffic over ATM satellite networks
Awadalla HO, Cuthbert LG and Schormans JA
Electronics Letters, Institution of Engineering and Technology (Iet) vol. 35 (17), 1430-1432.  
19-08-1999
bullet iconBuffer partitioning formula for different traffic classes in ATM
Schormans JA
International Journal of Communication Systems, Wiley vol. 12 (3), 175-180.  
01-05-1999
bullet iconFramework for supporting real time VBR traffic over satellite networks
Awadalla HO, Cuthbert LG and Schormans JA
Electronics Letters vol. 35, 616 -617-616 -617.  
01-04-1999

1998

bullet iconAnalysing the interdeparture process in an ATM multiplexer
Zeiss J and Schormans JA
International Journal of Communication Systems, Wiley vol. 11 (5), 319-325.  
01-09-1998
bullet iconBuffering packetised data: an examination of thecrossover effect
Ho LTH, Pitts JM, Samuel LG and Schormans JA
Electronics Letters, Institution of Engineering and Technology (Iet) vol. 34 (17), 1637-1638.  
20-08-1998
bullet iconDecay rate (ER) modelling of G/D/1 queue, and resultsfor ATMtelecommunications
Schormans JA and Pitts JM
Electronics Letters, Institution of Engineering and Technology (Iet) vol. 34 (10), 943-945.  
14-05-1998

1997

bullet iconSolution for M/G/1 queues
Schormans JA and Pitts JM
Electronics Letters, Institution of Engineering and Technology (Iet) vol. 33 (25), 2109-2111.  
04-12-1997
bullet iconATM modelling: Parameterization of the 4-phase MMPP model for the superposed traffic sources
Yousef SY, Strange CM and Schormans JA
 
01-12-1997
bullet iconATM modelling: Parameterisation of 4-phase MMPPmodel for admission control of superposed traffic sources
Yousef SY, Strange CM and Schormans JA
Electronics Letters, Institution of Engineering and Technology (Iet) vol. 33 (10), 829-830.  
08-05-1997

1996

bullet iconNew models for admission control of priority traffic in ATM networks
Schormans J and Pitts J
 
01-12-1996
bullet iconApproximation to M/D/1 for ATM CAC, buffer dimensioningand cellloss performance
Schormans JA, Pitts JM, Clements BR and Scharf EM
Electronics Letters, Institution of Engineering and Technology (Iet) vol. 32 (3), 164-165.  
01-02-1996
bullet iconPerformance, interarrival, and correlation analysis of four-phase MMPP model in ATM-based B-ISDN
Yousef SY and Schormans JA
Iee Proceedings - Communications, Institution of Engineering and Technology (Iet) vol. 143 (6) 
01-01-1996

1995

bullet iconPerformance evaluation of multipoint cellbuffering in ATM
Schormans JA, Smith R and Phillips CI
Electronics Letters, Institution of Engineering and Technology (Iet) vol. 31 (6), 431-432.  
16-03-1995
bullet iconDiscretised fluid-flow analysis for ATM connection admission control
Pitts JM
5th IEE Conference on Telecommunications
01-01-1995

1994

bullet iconEquivalent capacity for on/off sources in ATM
Schormans JA, Pitts J, Williams K and Cuthbert LG
Electronics Letters vol. 30, 1740 -1741-1740 -1741.  
01-10-1994
bullet iconExact fluid-flow analysis of single on/off source feeding an ATM buffer
Schormans J, Pitts J and Cuthbert L
Electronics Letters vol. 30, 1116 -1117-1116 -1117.  
01-07-1994
bullet iconAnalysis of ATM network access
Schormans JA
 
14-04-1994
bullet iconPerformance evaluation of point to multi-point cell buffering in ATM network switches
Schormans J, Smith R, Phillips C, Pitts J and Cuthbert L
 
01-03-1994
bullet iconAnalysis of a finite shared buffer
Schormans JA, Phillips CI, Smith R and Cuthbert LG
Electronics Letters vol. 30, 8 -9-8 -9.  
01-01-1994

1993

bullet iconA priority queue with superimposed geometric batch arrivals
Schormans JA, Pitts JM and Scharf EM
Stochastic Models, Taylor & Francis vol. 9 (1), 105-122.  
01-01-1993
bullet iconWaiting time probabilities in a statistical multiplexer with priorities
Schormans JA, Scharf EM and Pitts JM
Iee Proceedings I Communications Speech and Vision, Institution of Engineering and Technology (Iet) vol. 140 (4) 
01-01-1993

1992

bullet iconPrioritised GEO/D/1 telecommunications switch model
Schonnans JA, Scharf EM and Pitts JM
Electronics Letters, Institution of Engineering and Technology (Iet) vol. 28 (6), 597-598.  
12-03-1992
bullet iconRenewal theory validation of burst level technique for ATM simulation
Pitts JM and Schormans JA
Electronics Letters, Institution of Engineering and Technology (Iet) vol. 28 (2), 106-107.  
16-01-1992

1990

bullet iconAnalytical studies of superposition GMDP traffic sources for ATM networks
Sun Z, Cosmas J, Cuthbert LG, Pitts JM and Schormans J
 
01-09-1990
bullet iconAnalysis of ATM switch model (GEO/ATD/1) with time priorities
Pitts JM and Schormans JA
Electronics Letters, Institution of Engineering and Technology (Iet) vol. 26 (15), 1192-1193.  
19-07-1990
bullet iconAnalysis of telecommunications switch model (GEO/D/1) with time priorities
Schormans JA, Scharf EM and Pitts JM
Electronics Letters, Institution of Engineering and Technology (Iet) vol. 26 (5), 325-326.  
01-03-1990

Grants

solid heart iconGrants of specific relevance to the Centre for Networks, Communications and Systems
solid heart iconBespoke network emulation - impact acceleration
John Schormans
£19,032 EPSRC Engineering and Physical Sciences Research Council
01-12-2018 - 31-07-2019
solid heart iconCASE Award: Mujtaba Rosha
John Schormans
£15,000 Intergence Systems Limited
01-09-2014 - 31-08-2017