Welcome to the Networks Research Group
Group Leader
E mail: z.sun@surrey.ac.uk IP networking provides the fundamental supporting infrastructure for the emerging global multi-service network. The terrestrial Internet, its extension through satellite networks, 3G networks and emerging ad hoc, sensor and ubiquitous networks all operate on packet-based principles. Packet-based IP networking constitutes the unifying denominator behind the activities of the Networks Research Group, which include terrestrial and satellite networking, network and service management, network security, programmable networks, and mobile ad hoc and sensor networks. In this context some of our research encompasses traffic engineering and quality of service, survivability, network and application level multicast, network and application security, policy-based management, management of ad hoc and sensor networks, autonomic networking, management using mobile code and Web Services, and adaptive services for 3G environments. The group has a strong presence in both UK and European research through EPSRC and IST projects respectively, while it also holds key industrial collaborations. The group has an excellent publication record while its academics are key members of renowned journal editorial boards and international conference committees. Some of our recent achievements are:
- Developed a management and control architecture for providing quality of service in IP networks; this has been widely cited and used by other researchers
- Developed algorithms for traffic engineering, route optimisation, capacity allocation and survivability in MPLS-based networks
- Defined a policy-based architecture and policies for off-line network dimensioning and dynamic resource management
- Developed an approach based on event calculus for policy analysis in order to address policy refinement and policy conflict detection and resolution
- Developed a cascaded model for the provision of end-to-end quality of service across different administrative domains
- Developed algorithms for inter-domain and combined inter- and intra-domain traffic engineering for supporting quality of service
- Proposed extensions to the Border Gateway Protocol (BGP) for conveying quality of service information across domains
- Proposed a detailed decomposition of Service Level Agreements (SLSes) for both intra- and inter-domain services; relevant Internet drafts have been widely cited and used by other researchers
- Made contributions to the standardisation activities of ETSI for broadband satellite systems and ITU-T QoS evaluation of IP over satellite
- Developed a network architecture for IP multicast over satellite
- Developed security key exchange protocol and management mechanisms for satellite multicast networks
- Evaluated QoS of VoIP and multiparty multimedia conference over satellite
- Developed and validated frameworks for adaptive services in mobile networks beyond 3G
- Developed mechanisms for quality of service support in ad hoc networks
- Developed a context-based programmable framework for the management of ad hoc networks
