Mobile Communication Networks

A tantárgy neve magyarul / Name of the subject in Hungarian: Mobil kommunikációs hálózatok

Last updated: 2015. december 1.

Budapest University of Technology and Economics
Faculty of Electrical Engineering and Informatics
Course ID Semester Assessment Credit Tantárgyfélév
VIHIAC00 5 2/1/0/v 4  
3. Course coordinator and department Dr. Szabó Sándor,
4. Instructors Dr. Péter Fazekas, research fellow, HIT
5. Required knowledge Computer networks 1. and Computer networks 2.
6. Pre-requisites
(Szakirany("AMINinfokommHIT", _) VAGY
Szakirany("AMINinfokommTMIT", _) VAGY
Szakirany("AMIinfokom", _) VAGY
Szakirany("AMImob", _) VAGY
Szakirany("VIABI-INFC", _) )

ÉS NEM ( TárgyEredmény( "BMEVIHIA317" , "jegy" , _ ) >= 2
TárgyEredmény("BMEVIHIA317", "FELVETEL", AktualisFelev()) > 0)

A fenti forma a Neptun sajátja, ezen technikai okokból nem változtattunk.

A kötelező előtanulmányi rendek grafikus formában itt láthatók.

Computer networks 1. and Computer networks 2.
7. Objectives, learning outcomes and obtained knowledge The objective of this course is to introduce today’s modern wireless and mobile systems to our students. This contain basic knowledge needed to operate and maintain such networks. Further goal of this subject is to show the possibilities and operations of advanced radio and wireless solutions, through practical examples.
8. Synopsis Introduction, mobile networking basics:
•    motivations, informations about the specialization, logical architecture of the specialization, interdependencies among subjects
•    broader context of mobile networking as a profession: national and global data regarding this profession: estimate of number of enterprises, number of employees , gross income, share from GDP and short term forecast of these
•    overview of the contents of this semester, explanation of the logical structure of this subject, short introduction of corresponding lab practices
•    general architecture of mobile networks, paradigm of frequency reuse, cellular theorem
•    logical and physical mobile network topologies, examplified through real networks
•    problems of user mobility, draft solutions: handover, mobility management
o    location update, location tracking, location prediction, application in real networks
o    types of handovers, typical use cases and characterisation of handover types
•    basic concepts of wireless transmission at the level of introduction/refreshment of previously learned: bandwidth, carrier frequency, noise/interference, Shannon capacity, attenuation, fading, modulation, error correction coding, amplification, etc.
GSM rendszer
•    basic operation of GSM radio interface at a level that is necessary to understand the network: slot and frame structure, logical channels
•    architecture and logical architecture of the network, role of equipment
o    draft BTS functions
o    functions of BSC, architecture
o    MSC/GMSC functions and architecture
o    network databases (HLR, VLR, AuC, EIR) functions, roles, stored data, types, amounts
•    overview of GSM network protocols
o    Abis interface
o    A interface
•    change of the architecture and protocols, over original GSM
o    Abis over Internet Protocol
o    new MSC and Release 4 core network architecture
•    prectical implementations , possible configurations, vendor specific solutions
•    GSM processes
o    mobility management in GSM
o    paging and location update processes
o    handover in GSM
o    registration to network
•    issues of network management and maintenance
o    typical architecture and role of OMC
o    typical mobile (through GSM example) network KPIs (Key Performance Indicators)
    definitions, evaluations
o    fault detection and analysis through measured parameters
Development of GSM: packet switched mobile networks
•    GPRS radio interface and its basic operation slot and frame structure, logical channels
•    architecture of GPRS system, role of new elements, logical architecture
o    PCU functions
o    SGSN/GGSN functions, architecture
•    GPRS network protocols
o    new paradigm: packet switching and use of Internet Protocol
o    how GPRS uses IP, modifications
•    review of mobile IP
•    comparison of mobile IP and GPRS
o    GTP protocol
•    mobility management and handover in GPRS network
•    mobile terminal states, session management in GPRS
3G systems
•    basics of 3G radio interface
o    available bitrates, channels, packet- and circuit switched solutions
o    overheads, practical bitrates
o    UMTS -> HSPA -> HSPA+ developments
•    3G network architecture, role and operation of network elements
o    new equipment in the UMTS  radio access network (UTRAN): RNC
o    its functions, architectures
•    network examples and concrete implementations based on the logical architecture given in the standards
o    change of network architecture during the mobile network evolution, some vendor specific solutions
•    effect of HSPA on 3G architecture
•    UTRAN network topology and configuration options and solutions
•    UMTS network protocols
o    evolution of protocol architecture, role of layers
o    currently used solutions
•    UMTS QoS classes and their implementation
o    QoS support in HSPA
o    QoS implementation: scheduling and resource management
•    typical operational processes in 3G systems
o    handover process, mobility management
o    soft handover and its conseqences
LTE systems
•    basics of LTE radio interface
o    OFDM basics
o    available bitrates, channels, solutions
o    overheads, practical bitrates
o    LTE -> LTE Advanced developments
•    LTE network, role and architecture of elements
o    new elements in the core network
o    architectures, software/hardware components
•    network examples and concrete implementations based on the logical architecture given in the standards
o    based on the 3G example discussed earlier, shown as evolution/development, show motivations
operation of LTE systems
•    LTE protocol architecture
o    LTE stack
o    description of S1
o    description of X2
o    description of core network interfaces
o    practical implementations
•    typical operational processes in LTE
o    handover process
o    mobility management processes
o    session management
•    novelties in LTE-Advanced about system operation
Network management and maintenance in packet switched mobile networks
•    the effect of UMTS->HSPA->LTE evolution on network supervision systems
•    typical mobile data traffic parameters
•    meaning of general packet switched KPIs, evaluation, interpretation
•    special KPIs for given particular systems, their interpretations
Measurement and testing for mobile networks
•    LTE/LTE-Advanced protocol conformance testing based on the standards
•    base station testing methods
•    user terminal testing methods
Special development requirements over wireless systems
•    TCP shortcomings in wireless environment
•    some possible solutions, TCP variants for wireless
o    introduction of TCP wireless variants
o    available implementations and support
•    special requirements for applicatipon layer in wireless environment
o    case studies: some typical application layer solutions of these
•    special advantages and auxiliary possibilities for applications in mobile environments
Local and infrastructure-less networks
•    802.11 WiFi networks
o    802.11b,g,a,n,ac physical layers from available bitrates and performance perspectives
o    802.11e QoS enabled medium access protocol
•    802.11 networking solutions
o    802.11 mesh mesh network, 802.11 as backbone
o    use and possibilities of WiFi wireless distribution system
•    ad-hoc networks, classification, use cases
o    medium access and routing in ad-hoc networks
•    use case: ad-hoc networks based on WiFivel
•    Bluetooth networks
o    network forming, main Bluetooth processes
o    Bluetooth development kits and available support
o    Bluetooth versions
Personal area networks
•    Vimedia (wireless USB)
o    operation
o    development devices and support
•    NFC
o    operation
o    use of NFC, possibilities, bitrates
o    available development environments, support
Speciális networking solutions in industrial environment
•    industrial networks, onboard vehicular networks
•    main differences to user networks
o    from networking and radio point of view
•    industrial Internet networks
Future mobile/wireless networks
•    5G networks, current standardisation status
o    changes in system architecture
o    increased traffic, capacity cube, possible means of serving this increase
o    attocell networks, use of higher bands 60GHz, 120 GHz
o    Massive MIMO systems, coordinated multipoint communications, possibilities and constrains
•    impelemtation of networking equipment over generic hardware platform, cloud mobile core network
•    visible light based systems, LiFi
•    quantum communications: possibilities and current developments

9. Method of instruction előadás és közös gyakorlat
10. Assessment •    During semester: 1 midterms exam
•    Exam period: written exam
•    Pre-exam: yes

11. Recaps Possible repetition of midterm during the semester. One more possibility of writing the midterm at the first week after semester.
12. Consultations On-demand group consultations in pre-organised occasions.
13. References, textbooks and resources Electronic material made available through web portal, containing:
•    drafts for lectures;
•    relevant papers for relevant topics

14. Required learning hours and assignment
Kontakt óra56
Félévközi készülés órákra0
Felkészülés zárthelyire24
Házi feladat elkészítése0
Kijelölt írásos tananyag elsajátítása0
15. Syllabus prepared by Dr. Péter Fazekas, research fellow, HIT