1. Rosario Giuseppe Garroppo Università degli Studi di Pisa Dipartimento di Ingegneria della Informazione: Elettronica, Informatica, Telecomunicazioni Gruppo di Ricerca in Reti di Telecomunicazioni wwwtlc.iet.unipi.it Qualità del Servizio nelle reti radiomobili di terza generazione

2. UMTS Release 2000: All IP network ERAN: EDGE Radio Access Network GGSN: Gateway GPRS Support Node HSS: Home Subscriber Server SCP: Service Control Point SGSN: Serving GPRS Support Node UTRAN: UMTS Terrestrial Acc. Net. CSCF: Call State Control Function MGCF: Media Gateway Control Function MGW: Media GateWay MRF: Media Resource Function R-SGW: Roaming Signalling GateWay T-SGW: Transport Signalling GateWay

3. UTRAN logical architecture BTS MS RNC Site Control Core Network RNC Node B Site Control BTS Node B MS Site Control BTS Node B MS BTS Site Control Node B BTS MS RNS IUIU I UR I UB IUIU RNS: Radio Network System RNC: Radio Network Controller

4. User plane protocol architecture Uu Iu GnGi RNS 3G-SGSN 3G-GGSN L1 MT MAC RLC IP TCP/UDP Application L1 GTP-U TCP/UDP IP L2 L1 GTP-U TCP/UDP IP L2 L1 GTP-U TCP/UDP IP L2 L1 MAC RLC IP L1 GTP-U TCP/UDP IP L2

5. Framework for QoS in UMTS TETE CN Gateway CN Iu Edge Node UTRANMT End-to-End Service UMTS Bearer service External bearer service Radio access service CN bearer service TE/MT bearer service Radio bearer service Iu bearer service UTRAFDD/TDDservice Physical bearer service Backbone bearer service

6. QoS functions for the UMTS bearer service Transl. Adm. Contr. RAB Manager UMTS BS Manager UMTS BS Manager UMTS BS Manager Subscr. Control Adm./Cap. Control Iu BS Manager Radio BS Manager Iu NS Manager UTRA ph. BS M Radio BS Manager UTRA ph. BS M Local BS Manager Adm./Cap. Control Adm./Cap. Control Adm./Cap. Control Iu BS Manager Iu NS Manager CN BS Manager Ext. BS Manager CN BS Manager service primitive interface BB NS Manager BB NS Manager protocol interface Local Service Control TEMTUTRANCN EDGEGATEWAYExt. Net. External Service Control Control plane ë ëAdmission/Capability Control ë ëSubscription Control ë ëService Manager ë ëTranslaction Function

7. QoS functions for the UMTS bearer service User plane Resource Manager Resource Manager Resource Manager Resource Manager Mapper Resource Manager Resource Manager Classif. Cond. BB network serviceIu network serviceUTRAphys. BS data flow with indication of direction Local BS External BS MT UTRAN CN EDGEGATEWAY Cond. Classif. Cond. Mapper TE Ext. Net. ë ëResource Manager ë ëTraffic Conditioner ë ëMapping Function ë ëClassification Function

8. UMTS QoS Classes Traffic classConversational class conversational RT Streaming class streaming RT Interactive class Interactive best effort Background Background best effort Fundamental characteristics -Preserve time relation (variation) between information entities of the stream Conversational pattern (stringent and low delay ) - Preserve time relation (variation) between information entities of the stream -Request response pattern -Preserve payload content -Destination is not expecting the data within a certain time - Preserve payload content Example of the application -voice-streaming video-Web browsing - background download of emails Transfer delay per UMTS Bearer Service Conversational: 100 ms, Streaming: 250 ms -

9. QoS problems: Wireless vs. Wireline u QoS requirements: Bandwidth, Delay, Reliability HighLowTransmission Rate Link Errors RateLowHigh Link Characteristics WirelineWireless UNI fixed during the connection Mobility UNI changing during the con.