Transcript Femto - 3GPP2

3GPP2 FEMTO CELL WORKSHOP – S00-FEMTO-20071015-014
Huawei View on Femto
Zhiming Li, [email protected]
Boston, MA,
Oct 15-16, 2007
www.huawei.com
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Contents
• Overview of Femto
• Femto Key Features
Femto for Home Coverage
AT/MS
CDMA Femto
DSL access
Internet
/Intranet
AGW
CDMA
Core Network
Installed at home
 Cost effective to improve coverage and capacity at home

No special terminal needed to provided CDMA services at home

IP transmission over existing DSL line

Plug-and-play for end user to install CDMA Femto at home
Femto Requirements
Performance requirements
The same voice quality as CS voice call
The similar call setup time compared to macro network
The same level of handoff success rate compared to macro
network
Ongoing femto service should have minimum impact on
broadband connection such as xDSL
Management and maintenances requirements
Update of existing CN network should be minimum
Ease to manage/configure/upgrade femto
Overview of femto
A interface based femto solution
Femto contains BTS+BSC+PCF functionality
AGW provides aggregation function and PDSN function
AGW connects to MSC/MSCe over A interface over IP
IMS based femto solution
Femto contains BTS+BSC+PCF+PDSN functionality
Femto support SIP client for 1x terminal
AGW provides aggregation function
AGW connects to internet or 3GPP2 CN over IP
Contents
• Overview of Femto
• Femto Key Feature
A Interface Based Femto Architechture
“Home
Network”
“Broadband
network”
“Femto Cell Domain”
“Marco Domain”
PLMN
OMC
MSCe
FHR
Femto
HLR
PSTN
MGW
Modem
IP Network
Firewall
AGW
IPSec GW
Femto
FHR: Femto Home Register
AAA/AN-AAA
A Interface Based Femto

BTS+BSC+PCF solution
› Femto contains BTS+BSC+PCF function
› AGW aggregates the signaling+data flow
› Support 1x/DOtechnology
› AGW acts as PDSN function also
› AGW connects to MSC for supporting 1x voice call
A Interface Based Architecture Entities

Femto
›
›
›

AGW
›
›
›
›
›
›
›
›

BTS+BSC+PCF function (including 1x and HRPD)
Tunnel management for signaling and data
» Fat pipeline between the femto and the AGW
» Per user per tunnel
Self-configuration
A1/A2/A5 interface support over IP or E1/T1 for CS domain
Relay A1/A2/A5 interface message to the MSC
PDSN function
P-P interface support for fast handoff
Tunnel management for signaling and data
Femto’s Authenticator
ESN/MEID/IMSI based access control for 1X
NAI based access control for DO
FHR
›
AAA Server provides Diameter/Radius interface for Femto
Femto Authentication and Registration
Femto
AGW
IKEv2 Authentication
FHR
Diameter/Radius
IPSec Tunnel
Mutual authentication is preferred, the network must authenticate the device

›AGW behaves as authenticator, FHR acts as authentication server
IKEv2 is used for femto authentication

›refer to X.S0028-200

When authentication successes, the Femto’s profile is downloaded from the AAA

IPSec tunnel is setup for conveying signaling of cdma system
1x Femto: Call flow overview
MS
Femto
(1x)
AGW
MSC
HLR
Femto Authentication/Profile download
Tunnel Setup
System Info
1x Registration
Call Setup
1x Registration
FHR
HRPD Femto: Call flow overview
AT
Femto
(HRPD)
AGW
PDSN
AAA
Femto Authentication/Profile download
Tunnel Setup
System Info
PPP Session
Call Setup
Authentication
FHR
1x Femto: QoS
MS1
MS2
MS3
Voice
Voice
MS1 Voice
MS2 Voice
Femto
MS3 Web
Web
IPSec Tunnel
A1p/A2p interface between femto and AGW

Per user per tunnel


User priority based schedule over IP transport
AGW
HRPD Femto: QoS
Voice
AT1
AT1 Voice
Web
AT2 CS
AT2
Voice
Streaming
AT3
Web
Femto
AT1 Web
AT2 Streaming
AT3 Web
IPSec Tunnel

Per A10 per tunnel, each AT may have multiple A10 connections like HRPD

User and flow priority based schedule over IP transport
AGW
1x Femto: Mobility
1x MSCe
1x BTS
1x BSC
MGW
MS/AT
Femto
1x
AGW
PDSN
P-P interface
Intra-MSC handoff

›Bi-directional CS handoff
Inter-PDSN handoff

›Dormant Bi-direction PS handoff, packet session will be dropped if MIP is not used
HRPD Femto: Mobility
HRPD AN
AT
PDSN
Femto
HRPD
AGW
P-P interface
Inter-PDSN handoff

›Dormant Bi-direction PS handoff, packet session will be dropped if MIP is not used
Femto Accounting

MSC generates CS accounting info including femto indicator
info to the billing system

AGW generates PS accounting info including femto indicator
info to the billing system
IMS based Femto Architecture
“Home
Network”
“Broadband
network”
“Femto Cell Domain”
“Marco Domain”
PLMN
OMC
MSCe
FHR
Femto
HLR
PSTN
MGW
Modem
IP Network
IMS
Firewall
AGW
IPSec GW
Femto
AAA
IMS Based Femto

IMS based femto
› Femto contains BTS+BSC+PCF+PDSN function
› PPP terminates at the femto
› Femto Aggregation function at AGW
› Femto acts as SIP client on behalof on the MS for 1x femto
› For HRPD femto, the HRPD terminal shall support SIP client
› Support 1x/DO technology
› AGW connects to Internet or 3GPP2 CN over IP
› AGW acts as security gateway also
O&M

Femto management
› Frequency Assignment
› Access Technology configuration
› Legal user control
› Black list control
› Policy control
› …
Summary
Standard path


Phase 1: A interface Based Femto
›
Easy to deployment, Short time to market
›
Less modification to CN network
›
Performance stays at the same level as macro network
Phase 2: IMS based Femto
›
Fully support IMS service
Thank You
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