The document discusses GPRS and UMTS networks in the core network. It covers topics like GPRS system overview, mobility management, session management, quality of service, and roaming implementation in the core network. It describes the functions of core network elements like the SGSN and GGSN, including mobility management, session management, payload handling, charging, quality of service, and security. It also discusses access point names (APNs) and how quality of service is implemented in GPRS and UMTS networks.

1. GPRS/UMTS in the Core Network Free IT Saturday Lesson – Comlabs USDI ITB April 23 rd 2011 Prepared By : Mochamad Irwan Harahap Sr. Engineer – Telco Implementation VAS, PT XL Axiata

2. Topic Covered GPRS System Overview Mobility Management Session Management QoS Roaming Implementation in the Core Network

3. Why Data Services ? Technology Roadmap & Trends

4. Why Data Services ? change the way of communication & expressing yourself

5. Network Architecture

6. PS Core Function Overview - SGSN Mobility Management (MM) Session Management (SM) Payload Handling Charging QoS Security

7. SGSN Hardware Example of SGSN Hardware Huawei & Ericsson SGSN

8. SGSN Hardware – E1/T1 Board Example of SGSN Board

9. PS Core Function Overview - GGSN Session Management (SM) Payload Handling Charging QoS Security RADIUS Support

10. GGSN Hardware Example of GGSN Hardware – Ericsson GGSN

11. APN Access Point Name (APN) is a part of GPRS subscription data which is stored in Home Location Register (HLR) and which is transferred to the SGSN upon the activation of a GMM-Context. APN has to be defined in GGSN too. APN is split into two parts : Network Identifier : Mandatory Example : www.xlgprs.net Operator Identifier : Optional, except for inter-PLMN roaming Example : mnc011.mcc510.gprs Max APN Length : 100 octets. Max Network Identifier Length : 63 octets Max Operator Identifier : 100 – Network Identifier Length There are wildcard APN (*) on HLR. Which can allow user to not request a specific APN to do PDP Context Activation

12. How to access the Internet ? 1. MS has to be attached to network

13. How to access the Internet ? Attach request

14. How to access the Internet ? 2. MS has to have the IP address 3. MS access the web page

15. QoS The GPRS QoS functions, based on Release 99 QoS, including the following: Guaranteed Bit Rate (GBR) admission control Packet Flow Control (PFC) Overload Protection (OLP) Maximum Bit Rate (MBR) policing 3GPP-to-Internet Protocol (IP) QoS mapping rules Queueing, scheduling, and flow control (GSM) Sample of Optional QoS High Speed Downlink Packet Access Support (HSDPA Support)

16. QoS UMTS QoS R99 based on 3GPP TS 23.107

17. QoS Subscribed APN QoS send by HLR on MAP insertSubscriberData message

18. QoS Subscribed APN QoS in HLR

19. Thank You