MECHANISMS FOR ENSURING QUALITY OF SERVICE IN IPTV ÌÅÕÀÍÈÇÌÈ ÇÀ ÎÑÈÃÓÐßÂÀÍÅ ÊÀ×ÅÑÒÂÎ ÍÀ ÎÁÑËÓÆÂÀÍÅ ÏÐÈ IPTV

The aim of this paper is to provide an overview the most common mechanisms to ensure quality of service in IPTV. Typically, service providers do not implement all the techniques in their network and using a combination of several. Discussed in details are architecture of differentiated services and virtual LANs. Finally it's indicated techniques for manage IP address space. Ðacþia - Oaeoa ia ianoiyuaoa noaoey a aa na iaiðaâe iacið ia iae- ðaciðinoðaiaieoa iaoaiecie ca ineaoðyâaia ea÷anoâioi ia ianeoaeâaia iðe IPTV. Iaeeiiâaii ainoaâ÷eoeoa ia oneoaaoa ia âiaaðyâao âne÷ee oaoieee â nâiyoa iðaaea, a eciiecâao eiiaeiaoey io iyeieei. Ðacaeaaeaao na â aaoaeee aðoeoaeooða ia aeoaðaioeðaie oneoae e âeðooaeieoa eieaeie iðaaee. Iaeðay na iini÷ao e oaoieee ca oiðaâeaiea ia IP aaðaniioi iðinoðainoâi. 1. OÂIA Iiðaae oaeouo, ÷a iiâa÷aoi Internet Protocol Television (IPTV - oaeaâecey iðac eioaðiao iðioieie) oneoae na ainoaâyo ÷ðac ÷anoie IP aaceðaie oeðieieaioiâe iðaaee, iae-÷anoi nianoâaiino ia ainoaâ÷eea ia oneoaaoa, a iðaiiðu÷eoaeii âuâaaeaaiaoi ia iieeoeee ca aaðaioeðaia ea÷anoâioi ia ianeoaeâaia (Quality of Service - QoS) iðe iðaainoaâyia ia âeaai nuauðaeaiea. Iae-iaui oa ineaoðyâao caiacâaiaoi ia âeaai neaiaea e iaiaeyâao âaðiyoiinooa io oâðaaeaaiey iðe iðaianyiaoi io ia aueae ðacnoiyiey. Oyeinoiaoa nenoaiaoa ca ineaoðyâaia ia QoS na nunoie io ðaaeoa oaoieee e