- Network architectures and Systems, Prof. Barry Evans, 4h
1. Development of telecommunications and packet network architectures; local, national and international transmissions; switching and routing elements, PDH and SDH.
2. Layered networks, standards, circuit and packet switching, transition to IP, management.
3. Local access: ASDL, PON, fibre, cable, radio, WiMax.
Mobile cellular, Internet and ISP.
- Transmission Principles and Systems, Prof. Barry Evans, 8h
5. Service & Signal Characteristics – Types and nature of services, Position in a layered network, Description of signals-waveform, frequency, power, spectrum, Fourier, bandwidth, filters. Power description dBm, dBr, and dBmOp. Speech weighting, video, (FDM, TDM) and digital, data formats; transmission levels: Multiplex. TDM/FDM, simplex/duplex channels.
6. Physical Communication Channels (radio/fibre/lines) - Radio – FSL – radio tx in troposphere; Fibre types: systems, loss, dispersion lines: loss, dispersion, reflection, matching.
7-8. Signal Impairments - Noise, types- thermal noise definitions, noise figure/factor temperature calculation systems. Dispersion cables & fibres, crosstalk, clipping, intermodulation. Local loop BRL, echo & stability, echo cancellation & control, reference equivalent, loudness rating.
9. Design for Quality of Service (QoS) - Examples of design for QoS, radio system, ber/% availability, fibre optic system, loss & dispersion. Cable system, loss/crosstalk/dispersion.
10. Digital Transmission - Elements of digital transmission system, baseband & bandpass. Baseband processing; source coding, channel coding, encryption, multiplex, line coding, modulation, source coding for speech, video and ideas of TDM; PDH and SDH.
11. Baseband Digital Transmission -BER for baseband signalling, equalisation, pulse shaping, regeneration, line codes properties & applications of design in cable & fibre system.
12. Bandpass Digital Transmission - Modulation – ASK/FSK/PSK, BER, bandwidth & filtering. Multi-level schemes & QAM where used, radio, cable (XDSL).
- Circuit switching signalling and networking, Prof. Zhili Sun (3h)
13. Circuit switching systems – subscribe switching units, digital telephone switching systems, PBX, digital exchange structures, ISDN exchanges.
14. Signalling and control – signalling and common channel signalling systems, ITU common channel signalling system no.7 (SS7)
15. Call control – exchange control systems, intelligent networks, and future network intelligence.
- Packet Networks, Prof. Zhili Sun, 6h
16. Open Systems - Packet networks and open systems standards, the OSI Reference Model.
17-18. Link Layer Principles and Protocols - Asynchronous and synchronous techniques, framing, synchronisation, Flow and Error Control, Performance Analysis.
19-21. Network and Transport Protocols - Flow, error and congestion control. Circuit vs Packet Switching, ATM, the Internet Protocol (IP) and MPLS.
- Teletraffic Engineering, Prof. Zhili Sun, 9h
22. Modelling telecommunication systems: system structure, operational strategy, statistical properties of traffic, models
23. ITU-T recommendations on traffic engineering - Traffic demand characterisation, Grade of Service (GoS) objectives; Traffic controls and dimensioning; Performance monitoring.
24. Traffic concepts and grade of services (GoS) - Concept of traffic and traffic unit in Erlang, traffic variations and busy hour, blocking concept, traffic generation and subscribers reaction, QoS and GoS
25. Probability theory and Statistics – Distribution functions, characterisation of distribution functions, residual lifetime., exponential distribution, Erlang-k distributions.
26-27. Erlang’s loss system and B-formula – Poisson distribution, state transition diagram, derivation of state probability, traffic characteristics of the Poison distribution, traffic characteristics of Erlang’s B-formula
28. Erlang’s delay system - Erlang’s C-formula, numerical evaluation, mean queue length, mean waiting time, M/M/1, M/M/n queues.
29. Network planning and designing – traffic metrics, capacity planning, Kruithof’s double factor method, approximate end to end calculations methods; exact end to end calculations methods, optimal resource allocation. Overall design – bringing it all together.