Transcript Mobility Management for Multicast Sessions In a UMTS

Mobility Management for Multicast
Sessions In a UMTS-IP Converged
Environment
Leoleis, G.; Dimopoulou, L.; Nikas, V.; Venieris, I.S.
ISCC 2004.
Advisor: Yuh-Shyan Chen
Student: Kau-Lin Chiu
Date: March 8, 2006
Outline
•
•
•
•
Introduction
MBMS Service Description
UMTS Extensions for MBMS
MBMS Support in Converged UMTS-IP
Environment
• Conclusions
Introduction
• Multicasting appears as a straightforward
solution to facilitate one- or many-to-many
delivery of packet switched service.
• In B3G network, the UMTS core network are
replaced by pure IP mobility and multicast
functionality
Multimedia Broadcast/Multicast
Service
• MBMS is defined as a network layer UMTS
service that adopts a unidirectional (downstream)
point-to-multipoint data delivery mechanism.
• The Broadcast-Multicast Service Center (BM-SC)
– Control information flows exchanged with 3PP of
MBMS data
– Manage AAA information associated with third
parties
MBMS Service DescriptionNetwork Architecture
3PP
RNC
MN
Node B
SGSN
BM-SC
Multicast Service
IP Network
GGSN
RNC
Node B
SGSN
BG
HLR
Core Netwrok
Multicast Service
MBMS Service
•
•
•
•
•
•
•
•
Subscription
Service Announcement
Joining - Bearer Activation
Session Start
Notification
Data Transfer
Session Stop
Leaving - Bearer Deactivation
MBMS Contexts
Standby
No resource allocation
Active
Resource reservation
and transfer
UMTS Extensions for MBMS-Idle Mode
RAI 1
RAI 2
Node B
Node B
RA 1
Node B
SGSN1
Node B
RA 2
Node B
RAI 3
Node B
RA 3
RAI 4
SGSN 2
Node B
Node B
RA 4
•RA: Routing Area
•RAI: Routing Area Identifier
•RAU: Routing Area Update
RA
URA
PA
LA
Relocation Procedure
UMTS Extensions for MBMS-Connected Mode
Register
De-Register
MBMS Support in Converged UMTS-IP
Environment
• The UMTS CN towards a fully IP-based
mobile-aware network, a hybrid mobility
management model based on both UMTS
and Mobile IPv6 (MIPv6) mechanisms is
proposed.
Target Network Architecture
• RASH: executing MIP function and traditional PS
service
– Hide radio access technologies
– Terminate the access stratum and the non-access
stratum
RASN Relocation
UE
Source
RNC
Target
RNC
Old
RASN
New
RASN
Home
RASN
IP Core
Router
1. lu bearer relocation form source RNC to target RNC and from lod RASN to
new RASN
2. Temporary CN MBMS
bearer establishment
3. lu bearer relocation completion- conditional release of the path from the UE
to the old RASN via source RNC
4. router advertisment
5. Support of unicast mobility (MIPv6 binding update)
6. MLD unsolicited report
7. IP multicast routing signaling
8. Routing area update
9. Temporary CN MBMS
release
10. IP multicast routing signaling
Conclusions
• this paper has described the principles of the
multicast mode MBMS architectural.
• Inter-RASN mobility to multicast sessions is
provided through the specified RNS relocation
procedure enhanced with the establishment of
a short time tunnel for preventing packet loss.