1. Deb Barclay +1.630.690.2058 DLBarclay@alcatel-lucent.com
3GPP2 All IP Emergency Calls SDO Emergency Services Coordination Workshop Washington DC April, 2007
Deb Barclay
Kirk Burroughs
QUALCOMM

2. Presentation Overview
                      
3GPP2 / 3GPP Alignment
Stage 1 – Requirements
Stage 2 – Architecture / Call Flows
Stage 3 – Protocol
Summary
10 April 2007

3. 3GPP2 / 3GPP Alignment
3GPP2’s IMS Core Network specifications are based on 3GPP’s IMS Core Network specifications
This is true in general and not just for emergency services
For emergency services, there are some differences, mainly due to access network differences
3GPP2 covers IP-Based emergency calls originated from 3GPP2 associated wireless networks (HRPD and WLAN) whereas 3GPP also covers calls from ETSI TISPAN defined fixed broadband networks
How the Endpoint determines it is roaming
Broadcast MCC/MNC in 3GPP vs DHCP in 3GPP2
How unauthorized endpoints get access to the network
10 April 2007

4. Stage 1 - Requirements S.R0115 All IP-Network Emergency Call Support
S.R0115 (revision 1.1) recently updated to add support for the following:
Support for Non-authorized mobiles
Anonymous call support
A regional requirement (e.g. Japan: prefix 184 before emergency number 119)
10 April 2007

5. Stage 2 – Architecture / Call Flows
X.P0049 “Multi-Media Domain (MMD) Emergency Call Support”
Draft is available in the projects folder:
ftp://ftp.3gpp2.org/TSGX/Projects - under the X.P0049 folder
Based on 3GPP’s Stage 2, TS “IP based IP Multimedia Subsystem (IMS) emergency sessions; Stage 2”
Same architecture as 3GPP – when roaming, call is handled entirely in the visited network.
While X.P0049 is a Stage 2 specification for IMS Core Network, it will also contain annexes for HRPD/PDS and WLAN access network procedures
HRPD / PDS details in progress
WLAN work yet to begin
10 April 2007

6. IMS Emergency Call Architecture
BGCF: Breakout Gateway Control Function
CSCF: Call Session Control Function
E-CSCF: Emergency CSCF
LRF: Location Routing Function
MGCF: Media Gateway Control Function
P-CSCF: Proxy CSCF
S-CSCF: Serving CSCF
SUPL: Secure User Plane Location
UE: User Endpoint
* LRF – Location may be obtained using OMA SUPL
10 April 2007

7. Stage 3 Protocols X.P0013-004 “All IP Core Network Multimedia Domain”
Based on 3GPP’s Stage 3, TS “IMS call control based on SIP/SDP”
Will be part of X.P Rev. C
Effort started Feb. 2007
C.S0024 Rev. B - HRPD access network enhancements are complete:
Emergency call indicator in HRPD session request
10 April 2007

8. HRPD / PDS Details 3GPP2 allows a wide range of packet data options
Simple IP or Mobile IP
IPv4 or IPv6
Different packet data scenarios
Scenario 1: Endpoint powers up (Non-Authorized Mobile)
Scenario 2: Endpoint already has a Simple IP (v4 or v6) session
Scenario 3: Endpoint already has a Mobile IPv4 session
Scenario 4: Endpoint already has a Mobile IPv6 session
10 April 2007

9. Non-Authorized Mobile
10 April 2007

10. Mobile IP Access
10 April 2007

11. Summary
3GPP and 3GPP2 solutions are mostly aligned except for the access network related differences elaborated in slide #3
3GPP2 would like to work cooperatively with other groups to achieve global solutions.
Thank you!
10 April 2007

12. Acronyms DHCP – Dynamic Host Configuration Protocol
HRPD – High Rate Packet Data (3GPP2 access technology)
IMS – IP Multimedia Subsystem
MCC/MNC – Mobile Country Code/Mobile Network Code
MMD – Multi-Media Domain – 3GPP2 architecture that includes the IMS Core Network plus Packet Data Subsystem
PDS – Packet Data Subsystem
WLAN – Wireless Local Area Network
10 April 2007