prikaz prve stranice dokumenta Prospajanje digitalnog govornog signala u transmisijskoj mreži bez uporabe transkodera
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scientific master's theses
Prospajanje digitalnog govornog signala u transmisijskoj mreži bez uporabe transkodera
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2003. urn:nbn:hr:168:589461
Burilović, Ante
University of Zagreb
Faculty of Electrical Engineering and Computing
Department of Telecommunications

Institutional repository: FER Repository

Cite this document

Burilović, A. (2003). Prospajanje digitalnog govornog signala u transmisijskoj mreži bez uporabe transkodera (Scientific master's theses). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:589461

Burilović, Ante. "Prospajanje digitalnog govornog signala u transmisijskoj mreži bez uporabe transkodera." Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, 2003. https://urn.nsk.hr/urn:nbn:hr:168:589461

Burilović, Ante. "Prospajanje digitalnog govornog signala u transmisijskoj mreži bez uporabe transkodera." Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, 2003. https://urn.nsk.hr/urn:nbn:hr:168:589461

Burilović, A. (2003). 'Prospajanje digitalnog govornog signala u transmisijskoj mreži bez uporabe transkodera', Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 03 November 2024, https://urn.nsk.hr/urn:nbn:hr:168:589461

Burilović A. Prospajanje digitalnog govornog signala u transmisijskoj mreži bez uporabe transkodera [Scientific master's theses]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2003 [cited 2024 November 03] Available at: https://urn.nsk.hr/urn:nbn:hr:168:589461

A. Burilović, "Prospajanje digitalnog govornog signala u transmisijskoj mreži bez uporabe transkodera", Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2003. Available at: https://urn.nsk.hr/urn:nbn:hr:168:589461

Metadata
TitleProspajanje digitalnog govornog signala u transmisijskoj mreži bez uporabe transkodera
AuthorAnte Burilović
MentorBranko Mikac (mentor)
Committee memberVjekoslav Sinković (predsjednik povjerenstva)
Committee memberBranko Mikac (član povjerenstva)
Committee memberVlasta Hudek (član povjerenstva)
Committee memberMarijan Kunštić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
(Department of Telecommunications)
Zagreb
Defense date and country2003, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Telecommunications and Informatics
Universal decimal classification
(UDC)		621.3 - Electrical engineering
Abstract
Predmet istraivanja ovog magistarskog rada je utjecaj uvođenja funkcije Prospajanja digitalnog govornog signala u transmisijskoj mrei bez uporabe transkodera na 2G i 3G mrene elemente i protokole. Funkcija je u literaturi i standardima poznata po kratici TrFO (Transcoder Free Operation). Transkodiranje govora degradira njegovu kvalitetu, te bi ga telekomunikacijski sustavi trebali izbjeći ako je moguće, pogotovo u sitacijama gdje pokretni uređaj i mrea podravaju zajednički tip kodeka. U radnji je dan pregled svih kodnih tipova koji se koriste u 2G i 3G mreama, s posebnim osvrtom na AMR (Adaptive Multi-Rate) kodni tip. Također su opisani mreni protokoli: BICC (Bearer-Independent Call Control) te H.248/Megaco, koji su neophodni za prijenos informacija vezanih za kontrolu traskodera izvan govornog kanala (OoBTC - Out of Band Transcoder Control). Radnja je posebno fokusirana na analizu utjecaja uvođenja TrFO funkcije u MSC (Mobile Switching Center) i MGW (Media Gateway) čvorovima, te su opisane nune izmjene u BICC protokolu. Također su opisani utjecaji na funkcioniranje postojećih korisničkih usluga.
Abstract (english)
The problem the thesis addresses is the analysis of the impacts on 2G and 3G network elements and protocols due to introduction of transcoder-free cross-connecting of digital voice signal in transmission network. In literature and standardizations documents, this feature is known as TrFO Transcoder Free Operation. The transcoding of speech may degrade quality and, therefore, mobile systems should try to avoid this if possible, when both user equipment and the network can support a common codec type. The thesis gives an overview of all codec types used in 2G and 3G networks, with attention to AMR (Adaptive Multi Rate). Network protocols: BICC (Bearer-Independent Call Control) and H.248/Megaco, required for transfer of OoBTC (Out of Band Transcoder Control) information, are described as well. In particular, the thesis is focused on the impacts on MSC (Mobile Switching Center) and MGW (Media Gateway) nodes. Necessary changes in BICC protocol are described, as well as impacts on existing services and functions.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:168:589461
Study programmeTitle: Postgraduate master programme in electrical engineering
Study programme type: university
Study level: postgraduate
Academic / professional title: Magistar znanosti elektrotehnike (Magistar znanosti elektrotehnike)
Catalog URLhttps://lib.fer.hr:8443/cgi-bin/koha/catalogue/detail.pl?biblionumber=29175
Type of resourceText
Extent117 str. ; 30 cm
File originBorn digital
Access conditionsClosed access
Terms of useLicence In copyright icon
Created on2019-09-11 12:48:32