Transcript Overview of Proposed Femtocell Architecture Alternatives presented

Overview of Proposed Femtocell Architecture
Alternatives presented at the 3GPP2 Femto
Workshop
Airvana
5 November 2007
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5 November 2007
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Femtocell Architecture Alternatives
• 1x Circuit Services
• 1x and HRPD Packet Data Services
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1x Circuit Service Architecture
Alternatives
• Legacy-based Architecture
– Security Gateway (FNG)
– Femtocell generates A1/A2p
– A1/A2p interface terminates on MSCe, which interfaces to the ANSI-41
core network
• SIP/IMS-based Architecture
– Security Gateway (FNG)
– Femtocell generates SIP/IMS; talks to IMS core network
– Convergence Server (CSRV) acts as gateway between SIP/IMS and
legacy circuit (ANSI-41) core networks
• SIP-based Architecture with Call Manager Gateway
–
–
–
–
Security Gateway (FNG)
Femtocell generates SIP; talks to Call Manager
Call Manager acts as gateway from SIP to legacy A1/A2 circuit
Circuit services provided by MSC via A1/A2 interfaces
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Typical Femto Architectures for Legacy Circuit
Services (Legacy Technology-based Approach)
HLR
Femtocell
Public
Internet
Femto
Network
Gateway
Mux/
Demux
Proxy
Legacy
Controller
(e.g., MSCe)
Legacy
Circuit
Network
Device
Requesting
Legacy Circuit
Service (e.g.,
1x Voice)
5 November 2007
Legacy
Controller
Protocols
Tunneled in IP
(e.g., A1/A2p)
Legacy Circuit
Protocols
(e.g., ANSI-41)
MSC
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Typical Femto Architectures for Legacy Circuit
Services (SIP/IMS-based Approach)
HLR
MGW
RTP
Femtocell
Public
Internet
Femto
Network
Gateway
Convergence
Server
(CSRV)
Operator’s
SIP/IMS
Network
Device
Requesting
Legacy Circuit
Service (e.g.,
1x Voice)
5 November 2007
Legacy
Circuit
Network
MSC
SIP
SIP
Legacy Circuit
Protocols
(e.g., ANSI-41)
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Typical Femto Architectures for SIP-based
Architecture with Call Manager Gateway
HLR
Femtocell
Public
Internet
Femto
Network
Gateway
Call
Manager
Legacy
Circuit
Network
Device
Requesting
Legacy Circuit
Service (e.g.,
1x Voice)
5 November 2007
MSC
SIP
A1/A2
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1x and HRPD Packet Data
Architecture Alternatives
• PCF + PDSN
– Security Gateway (FNG)
– PCF Concentrator
– Use existing A10/A11 to PDSN from each
Femtocell
• PDST + FNG
– Security Gateway (FNG)
– Current PDSN functions divided between
Femtocell and FNG
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PCF + PDSN Architecture
IP Core
Network
EV-DO Phone
PPP/A10/A11/IPSec
EV-DO
IPSec
Tunnel(s)
SeGW
PPP/A10/A11
HA
PDSN
1xRTT
PPP/A10/A11
PCF Concentrator
1x Phone
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PDST + FNG Architecture
IP Core
Network
Femto Network
Gateway (FNG)
EV-DO Phone
EV-DO
IPSec
Tunnel(s)
HA
1xRTT
1x Phone
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