The course aims to achieve the following objectives, in line with the Dublin descriptors:
1. Knowledge and understanding:
Knowledge of the technologies used in mobile networks, markedly different from those adopted in fixed networks due to the characteristics of the radio transmission medium and the problems of managing users' mobility. Knowledge of the methodological tools necessary to analyze system-level performance.
Knowledge of the standards currently operational or soon to be implemented, describing the architecture of the networks on the basis of fundamental operational concepts. Specific knowledge of resource management, terminal mobility and security in mobile networks.
Knowledge of the elements characterizing mobile services already on the market and being implemented which are a driving force in the evolution of the mobile systems themselves.
2. Ability to apply knowledge and understanding:
students will be able
3. Communication skills: students will be able to rationally communicate knowledge on mobile cellular networks, with mastery of the specialized vocabulary of the sector.
4. Learning skills: students will be able to independently read standards and scientific literature of the sector, in order to update themselves on the fast evolutions of mobile radio technologies and to deepen complex issues.
The course mainly takes place through lectures performed both on the blackboard and with the aid of personal computers through which slides can be projected.
There are also exercises in which students are often invited to carry out the proposed exercises under the guidance of the teacher, in order to stimulate collective attention and also to obtain a random check of the learning results.
In addition, 25 hours of laboratory activities are planned.
If the teaching is given in a mixed or remote mode, the necessary changes with respect to what was previously stated may be introduced, in order to comply with the program envisaged and reported in the syllabus.
1. Introduction and basic concepts on mobile networks. Classification, motivation and requirements of mobile networks. Evolution of mobile networks and services. Mobile network architectures. Sharing of radio resources. The mobility of users.
2. The radio channel and radio transmission. Radio channel and propagation models. Outline of numerical modulation and channel coding schemes. Cell sizing with radio propagation considerations.
3. Radio access. Multiple access techniques in broadcast channels. Duplexing. Radio resource sharing models.
4. Mobility Management and Mobile Performance Analysis. Cell selection, location management, handover. Traffic models and mobility models for call-level performance calculation.
5. Radio planning: cellular coverage and network capacity. Reuse of frequency. Planning a cellular system with traffic engineering considerations. Static and dynamic frequency allocation techniques. Capacity analysis.
6. GSM: Architecture and radio interface; physical and logical channels; management of mobility, radio resources and security; reporting protocols; examples of procedures; supported services.
7. GPRS: Architecture and protocols of the GPRS network: comparison and updates with respect to the GSM architecture. GPRS radio interface: MAC / RLC levels; packet channel allocation. EDGE notes.
8. UMTS: Architecture and radio interface; power control; management of radio resources, mobility and security; QoS services and classes.
9. LTE: main features and performances offered by the new technology. Network and service architecture. Interfaces and protocols. LTE radio interface.
10. Towards 5G. LTE-Advance and LTE-Advance Pro. 5G Usage scenarios and requirements. QoS architecture and model. 5G New Radio. 5G RAN & 5G Core
11. Laboratory . The experiences in the laboratory are an integral part of the course. The issues addressed are listed below.
Should the teaching be given remotely, the necessary variations with respect to the specific laboratory activities declared may be introduced.