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Integration of wireless LAN and 3G wireless - Interworking architecture between 3GPP and WLAN systems

Ahmavaara, K.; Haverinen, H.; Pichna, R.; Communications Magazine, IEEE 11 , Nov. 2003

報告者 : 洪英富

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outline WLAN system architecture 3GPP-based WLAN Access , Authentication and

Authorization User Data Routing and Access to Services 3GPP-Based Charging for WLAN

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WLAN system architecture

WLAN terminal Layer 2 distribution network DNS DHCP AAA server / proxy Billing system Http server Gateway NAPT

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WLAN system architecture

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WLAN system architecture(3GPP Subscription for WLAN)

SIM/USIM HSS

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3GPP-Base WLAN Access Authentication and Authorization IEEE 802.11i EAP SIM :authentication and key agreement protocol base on

GSM EAP AKA :encapsulates the UMTS Authentication and Key Agree

ment within EAP

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User Data Routing and Access to Services The technical architecture regarding user data routing has not

been agreed on in 3GPP IP network selection : W-APN ,similar to the APN parameter us

ed in GPRS PDG : terminates the tunnel and acts as a gateway to the selec

ted remote IP network WAG : implement tunneling Wn , Wp , Wu , W i : data plane Wg , Wm : control plane

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User Data Routing and Access to Services

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3GPP-Based Charging for WLAN Two different charging methods : (1)postpaid (2)prepaid : CG : for postpaid , The charging information collection hap

pens via so-callde charging gateway (CG) OCS : online charging system for prepaid

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3GPP-Based Charging for WLAN ..