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Wireless Access in 2006 and Beyond

Wireless Access in 2006 and Beyond. Matt Kolon Mobility Architect matt@juniper.net. Agenda. Mobile technology overview GSM, GPRS/EDGE and transition to UMTS WCDMA CDMA and CDMA2000 transition to 3G WLAN and mobile integration Planning considerations for wireless access.

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Wireless Access in 2006 and Beyond

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  1. Wireless Access in 2006and Beyond Matt Kolon Mobility Architect matt@juniper.net

  2. Agenda • Mobile technology overview • GSM, GPRS/EDGE and transition to UMTS WCDMA • CDMA and CDMA2000 transition to 3G • WLAN and mobile integration • Planning considerations for wireless access

  3. Mobile Packet Networks PSTN/ ISDN Service Domain Host Subscriber Server (HSS) Emergency Alert System (EAS) WiFi/WiMax IP Multimedia Subsystem Access Point Call Session Control Function (CSCF) Media Resource Function (MRF) Transit Switching Center (TSC) Site Router Media Gateway Base Transceiver Station (BTS) Mobile Switching Center (MSC) Base Station Controller (BSC) Serving GPRS Support Node (SGSN) Base Switching Station (GSM/EDGE) Mobile Packet Backbone Network Gateway GSN Base Transceiver Station (BTS) Intranets/Internet Radio Network Controller (RNC) Multimedia Gateway WLAN Access Server UTRAN (WCDMA)

  4. Wireless evolution: 3 major streams 3G 2G 2.5G IS-95B CDMAIS-95A CDMA2000 3xRTT CDMA 1xRTT 1xEV-DO 1xEV-DV HSCSD WCDMA GSM GSM GPRS Multiple phases EDGE Wireless Broadband WiFi WiMAX

  5. High Speed Circuit Switched Data Dedicate up to 4 timeslots for data connection ~ 50 kbps Good for real-time applications c.w. GPRS Inefficient -> ties up resources, even when nothing sent Not as popular as GPRS (many skipping HSCSD) Enhanced Data Rates for Global Evolution Uses 8PSK modulation 3x improvement in data rate on short distances Can fall back to GMSK for greater distances Combine with GPRS (EGPRS) ~ 384 kbps Can also be combined with HSCSD GSM 9.6kbps (one timeslot) GSM Data Also called CSD HSCSD GSM GPRS WCDMA General Packet Radio Services Data rates up to ~ 115 kbps Max: 8 timeslots used as any one time Packet switched; resources not tied up all the time Contention based. Efficient, but variable delays GSM / GPRS core network re-used by WCDMA (3G) EDGE GSM evolution to 3G

  6. IS-95B Uses multiple code channels Data rates up to 64kbps Many operators gone direct to 1xRTT CDMA2000 1xEV-DO: Evolved Data Optimised Third phase in CDMA2000 evolution Standardised version of Qualcomm High Data Rate (HDR) Adds TDMA components beneath code components Good for highly asymmetric high speed data apps Speeds to 2Mbps +, classed as a “3G” system Use new or existing spectrum IS-95B CDMAIS-95A CDMA2000 3xRTT 1xEV-DO 1xEV-DV IS-95A 14.4 kbps Core network re-used inCDMA2000 1xRTT CDMA2000 1x Evolved DV Fourth phase in CDMA2000 evolution Still under development Speeds to 5Mbps+ (more than 3xRTT!) Possible end game. CDMA2000 1xRTT: single carrier RTT First phase in CDMA2000 evolution Easy co-existence with IS-95A air interface Release 0 - max 144 kbps Release A – max 384 kbps Same core network as IS-95 CDMA2000 evolution to 3G

  7. 3G Release 99 Packet switched SCP 3G MSC RNC Iu r TDM AAL2 Iu b Iu cs NodeB PSTN AUC USIM IP/AAL5 HLR Iu ps IP InternetCorporate Gn Gi 3G SGSN Packet transfer to & from serving area Registration, authentication Mobility management logical links to RNC, tunnel to GGSN QoS 3G GGSN Multiple PDP contextsQoS (GPRS extensions for real time traffic classes etc)

  8. Circuit switchedcall control server (MSC Server) 3G Release 4 TS 23.205 Split TS 29.414 Bearer BICC Mc H.248 MEGACO Nb TDM ATM IP NodeB Media Gateway (CS-MGW) Media Gateway PSTN USIM IP/AAL5 Split MSC into bearer and control Bearer independent CS New MGCP, new CS call control InternetCorporate Streaming MMS service using PS streaming service 26.233

  9. Circuit switchedcall control server SIP STACK 3G Release 5 23.228 IMS 25.933 IP UTRAN BICC H.248 RTPorAAL2 UDP/IP or AAL2 TDM ATM IP Iu cs Iu b NodeB PSTN Iu ps USIM IP/AAL5 Native IP UTRAN option InternetCorporate Call Session Control Function IP multimedia control sub system (IMS) – IPv6, SIP based SIP IP Multimedia CSCF QoS enhancements (end-to-end)

  10. Wi-Fi Mobile Node Internet WAP ESS FA FA HA RAN Mobile Core Home Network SGSN Mobile IP Applications • WiMAX networks • WLAN to cellular roaming • Inter GGSN or PDSN roaming

  11. Mobile IP Interworking with UMTS/GPRS • Recommends use of FA Care Of Addresses (CoA), not collocated, to conserve IPv4 addresses Source: 3GPP

  12. Access Controller, RADIUS Relay RADIUS/SS-7 GW HLR Client Authenticator EAPoL RADIUS Gr Interface Client - Authentication Create PDP Context {IP, transparent mode APN, IMSI/NSAPI, MSISDN, dynamic address requested} Create PDP Context Response {End User Address} DHCP Discover RADIUS Client – IP Address Assignment DHCP Offer DHCP Request DHCP Ack {address = End User address from GGSN} Lease expiration Delete PDP Context Request Tight integration proposed by 3GPP HLR GPRS Tunneling Protocol GGSN GGSN

  13. PSTN PLMN High Level IMS Architecture ABBREVIATIONS SERVICE PLANE SCIM: Service Capability Interaction Manager MRFC: Multimedia Resource Function Controller CSCF: Call Session Control Function HSS: Home Subscriber Server HLR: Home Location Register PDF: Policy Decision Function BGCF: Breakout Gateway Control Function MGCF: Media Gateway Control Function MGW: Media Gateway GGSN: Gateway P\GPRS Support Node SGSN: Serving GPRS Support Node SCIM (Service Broker Platform) MRFC S-CSCF HSS I-CSCF HLR CONTROL PLANE P-CSCF BGCF MGCF PDF MGW MGW MRFP Node B RNC GGSN BTS SGSN BSC Intranet/Internet WLAN TRANSPORT PLANE RAN

  14. Thank You

  15. Backup Slides

  16. A Reference Point A2 A1 A5 A11 A9 A10 A8 Aquinter Reference Point Aquater Reference Point (R-P Interface) Ater Reference Point A3 A7 3GPP2 Reference Architecture MSC/VLR HLR SS7 External IP Network Pi Radio Network (RN) Source BSC PCF PDSN Source BTS Target BSC Ref: 3GPP2 A.S0011 Ref: 3GPP2 A.S0011

  17. Circuit Switched & PCU FR Packet Switched Core Gb IP Network InternetCorporate Gi Gn GPRS: General Packet Radio Service SCP BSC TDM Um Abis A BTS PSTN AUC SIM HLR Packet Control Unit (PCU) Forward data frames from TDM BSS to packet core New hardware in BSC Serving GPRS Support Node(SGSN) Packet transfer to, from serving area Registration, authentication, mobility management / handover, CDRs logical links to BTS, tunnel to GGSN Gateway GPRS Support Node (GGSN) Gateway to external IP networks (VPN/ISP etc) IP network security GPRS session mgmt, AAAA CDRs for charging

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