All IP Network Architecture 2001 년 12 월 5 일 통신공학연구실 석사 4 차 유성균

인하대학교 정보통신대학원 통신공학연구실 2 Contents  All IP  3G Movements  3GPP Network Architecture  3GPP2 Network Architecture  MWIF Network Architecture

인하대학교 정보통신대학원 통신공학연구실 3 All IP  Enable fully IP based service delivery.  Not only data, but also speech service would be provisioned over IP bearer.  Advantage  Ability to offer seamless services, through the use of IP, regardless of means of access (e.g. common features used by subscribers whether accessing via conventional land telephony, cable, wireless, HPERLAN 2, etc.).  Synergy with generic IP developments and reduced cost of service.  Efficient solution for simultaneous multi-media services including voice, data, and advanced real time services.  Higher level of control of services.  Integrated, and cost reduced operations and maintenance through IP.  Take advantage of Internet applications by supporting terminals which are IP clients.  Cost reduction through packet transport.

인하대학교 정보통신대학원 통신공학연구실 4 3G Movements  Wireless industry is evolving its core networks toward IP technology.  Global wireless industry has created two new partnership projects:  3 rd Generation Partnership Project (3GPP)  3G standards for GSM based cellular systems (UMTS).  3 rd Generation Partnership Project 2 (3GPP2)  3G standards for IS-41 based cellular systems (cdma2000).  Mobile Wireless Internet Forum (MWIF) has specified an access independent All IP architecture.  “drive acceptance and adoption of a single mobile wireless and Internet architecture”.  Internet Engineering Taskforce (IETF)  Several protocols that will be essential for All IP networks.

인하대학교 정보통신대학원 통신공학연구실 5 3GPP Network Architecture (1)  Network architecture  Radio Access Network (RAN)  General Packet Data Service (GPRS) network  IPT core network  Gateways  Databases

인하대학교 정보통신대학원 통신공학연구실 6 3GPP Network Architecture (2)  Radio Access Network (RAN)  UTRAN : WCDMA based RAN  GERAN : GSM TDMA based RAN  RAN and GPRS network together provide IP bearer from the UE to the IPT core.  General Packet Data Service (GPRS) network  Straight evolution from GSM and UMTS GPRS network  Serving GPRS Support Node (SGSN)  Gateway GPRS Support Node (GGSN)  GPRS network is responsible for controlling IP bearer service.  User authentication, authorization, accounting, mobility management inside GPRS network, controlling Radio Access Bearers (RAB)

인하대학교 정보통신대학원 통신공학연구실 7 3GPP Network Architecture (3)  IPT core network  Call State Control Function (CSCF) : manages all call (or session) control related procedures.  Proxy CSCF (P-CSCF)  Serving CSCF (S-CSCF)  Interrogating CSCF (I-CSCF)  Media Resource Function (MRF) : handles media management related operations.

인하대학교 정보통신대학원 통신공학연구실 8 3GPP Network Architecture (4)  Gateways  Roaming Signalling Gateway (R-SGW) : handles signalling conversions required for roaming to legacy networks.  PSTN Gateway : handles interworking with PSTN and other switched circuit networks (SCN).  Media Gateway Control Function (MGCF)  Transport Signalling Gateway (T-SGW)  Media Gateway (MGW)  Databases  Home Subscriber Server (HSS)  Home Location Register (HLR) : is equivalent of the HLR in 3GPP Release 99 (UMTS) specifications which holds subscriber profile information needed in GPRS part of the network.  User Mobility Server (UMS) : stores subscriber profiles required in the IPT core network.

인하대학교 정보통신대학원 통신공학연구실 9 3GPP Network Architecture (5)

인하대학교 정보통신대학원 통신공학연구실 10 3GPP2 Network Architecture (1)  Network Architecture  Access Network  Session Control Manager (SCM)  Medial Resource Function (MRF)  Databases  QoS Management Functionalities  Gateways

인하대학교 정보통신대학원 통신공학연구실 11 3GPP2 Network Architecture (2)  Access Network  User authentication and authorization is done in the cdma2000 Access Network (GPRS network functionalities in 3GPP).  Access Network and Access Gateway : together equals roughly to combination of RAN and GPRS of the 3GPP architecture and provide IP bearers from Mobile Station to IPT core network.  Session Control Manager (SCM) : has very similar functionality than CSCF in 3GPP.  Interrogating SCM (I-SCM) : I-CSCF in 3GPP  Serving SCM (S-SCM) : S-CSCF in 3GPP  Visited SCM (V-SCM) : P-CSCF in 3GPP  Medial Resource Function (MRF) : has very similar functionality than MRF in 3GPP.

인하대학교 정보통신대학원 통신공학연구실 12 3GPP2 Network Architecture (3)  Databases  Have similar functionalities than HSS in 3GPP.  QoS Management Functionalities : are incorporated into RAN and GPRS network entities in 3GPP.  Subscription QoS manager (SQM) : make policy decisions on QoS allowed for user sessions based in subscriber profile and current QoS allocations for the user.  Core QoS manager (CQM) : makes decisions on use of the QoS resource within one core network.

인하대학교 정보통신대학원 통신공학연구실 13 3GPP2 Network Architecture (4)  Gateways : resemble very much the Gateways of the 3GPP.  Media Gateway Control Function : MGCF in 3GPP  Medial Gateway : MGW in 3GPP  Trunk Signaling Gateway : T-SGW in 3GPP  Network Capability Gateway (NCGW) : authorize servers’ use of the network resources (is embedded into CSCF in 3GPP).

인하대학교 정보통신대학원 통신공학연구실 14 3GPP2 Network Architecture (5) EIRDSI Subscription Profile Database Network Policy Rules … Legacy MS Domain Support Subscription Quality of Service Manager Advertising Agent Position Server AAA Network Capability Gateway Position Determining Entry Access Gateway FA/ Attending Session Control Manager BTS BSC/RNC +PCF Core Quality of Service Manager Other Access Networks MM Media Resource Function Mobile Station Databases Mobile IP Home Agent Service Application Roaming Signaling Gateway Trunk Signaling Gateway Media Gateway Control Function Media Gateway Border Router Cdma2000 Access Network IP Networ k PSTN MAP TIA/EIA-41 GSM

인하대학교 정보통신대학원 통신공학연구실 15 MWIF Network Architecture (1)  Network Architecture: resembles very much the 3GPP2.  Databases  Gateways  Access Gateways  Session Control Managers  Subscriber profile and policy management is covered in detail.  Distinct servers for authentication, authorization, and accounting.  Distinct directory servers  Location server, global name server, policy server, and profile server.

인하대학교 정보통신대학원 통신공학연구실 16 MWIF Network Architecture (2)  AAA Functional Entities  Authentication  Authorization  Accounting  Access Gateway (AG) : a collective that interfaces an access network to the core network.  Access Transport Gateway : interfaces the access network transport and the core network transport.  IP Address Manager  Mobile Attendant  Accounting Server : keeps track of the services, QoS, and multimedia resources requested and used by individual subscribers.  Application Functional Entity : contains entities that store and execute functions for subscribers.

인하대학교 정보통신대학원 통신공학연구실 17 MWIF Network Architecture (3)  Authentication Server : verifies the identity of a requesting entity.  Authorization Server : verifies that the one or more services, the QoS, or the multimedia resources requested by a subscriber are allowed based on the services subscribed and policies of the service provider.  Billing Management : is responsible for collection, storage, and processing of all necessary data for billing network services and applications.  Communication Session Manager (CSM) : provides the controls for all sessions for a given subscriber.  Home IP Address Manager : supports dynamic allocation of IP addresses to terminals.  Media Gateway (MG) : interconnects the core network to the PSTN or to circuit terminations.  Policy Repository : provides the policy rules for subscriber policy usage, expected QoS, valid times and routes.

인하대학교 정보통신대학원 통신공학연구실 18 MWIF Network Architecture (4)