Research projects
In progress
Five projects currently running at the centre, across biomedical and multimedia sensor
networks, WiMAX internetworking and reliable data delivery.
In progress
Intelligent Priority-Assignment Mechanism for Biomedical Sensor
Networks
Biomedical wireless sensor networks (BWSN) emerged from the integration of biomedical
sensors with wireless networks and have great potential in medical scenarios. BWSN are
required to handle data according to the time constraint associated with it: data in a
medical emergency is mostly real time and requires appropriate real-time action. Many
protocols have been proposed to handle real-time traffic in wireless sensor networks,
most based on end-to-end path discovery with recovery, and little has been done using
queuing models.
This project develops an intelligent priority assignment mechanism (IPAM) which assigns
priority to data streams dynamically on the basis of their criticality. A queuing
scheduler adaptively schedules different types of data flow by the priority IPAM
assigns, adapting to network conditions and continuously monitoring queuing delay to
provide end-to-end QoS without invoking any congestion control and avoidance mechanism.
Supervised by Dr. S. A. Hussain and Imran Raza
In progress
Jitter resilient TCP for Biomedical Wireless Multimedia Sensor
Networks (BWMSN)
Multimedia applications of wireless sensor networks have fostered the development of
wireless multimedia sensor networks (WMSN). Existing WSN protocols and standards need to
be rethought to transfer multimedia content, and an efficient transport layer protocol is
required to carry still images, video and audio streams with end-to-end reliability and
congestion control. Existing TCP solutions are inappropriate for WMSN because they
cannot distinguish bad channel conditions from congestion, and the TCP variants proposed
for WSN do not handle the jitter TCP itself induces — a key factor limiting
multimedia transport.
The project studies TCP-based multimedia applications in WMSN and develops a scheme to
minimise jitter, taking as a case study the transfer of still images, audio and video in
a medical emergency: biomedical wireless multimedia sensor networks.
Supervised by Dr. S. A. Hussain and Imran Raza
In progress
Dynamic routing in wireless multimedia sensor networks
The purpose of this project is to optimise the network layer to support real-time
multimedia traffic in WMSN. Existing solutions identify routing metrics such as delay and
energy, but the choice of metrics and their weights depends on dynamic network
conditions and should not be user defined. The project identifies metrics that can be
optimised and weighted for multimedia traffic, and develops a scheme that adjusts those
weights automatically — shifting the decision making from the user into the
network.
Supervised by Dr. S. A. Hussain and Imran Raza
In progress
WiFi enabled WiMAX networks
The objective is to provide internetworking between WLAN (IEEE 802.11) and WMAN
(IEEE 802.16) with guaranteed quality of service. Interoperability, end-to-end QoS
profile mapping and the rerouting of packets are the issues to be resolved.
Supervised by Dr. S. A. Hussain and Imran Raza
In progress
Reliable data delivery in wireless sensor networks
This project explores design issues at the MAC layer in WSN: latency, reliable data
delivery and security. Data collected by a sensor has to be transported to the link
reliably, and the nature of WSN applications makes reliable delivery an important
research issue. The dynamic topology of WSN demands an effective solution to avoid
latency in data delivery.
Supervised by Dr. S. A. Hussain and Imran Raza