Cisco Cisco Packet Data Gateway (PDG) Manual De Manutenção
New Feature Summary
Generally Available 06-30-2010
1-24
GGSN Features in Release 8.0
This section provides information for new features for the GGSN Service in Release 8.0.
Multimedia Broadcast Multicast Service (MBMS)
Starent Networks GGSN now supports Multimedia Broadcast and Multicast Service. The
MBMS is an IP datacast type of service in GSM and UMTS cellular network. It eliminates
unnecessary replication of data on UMTS wireless networks by transmitting a single stream
of data to multiple users. By delivering a single, unidirectional data stream to many
subscribers, MBMS makes more efficient use of wireless network resources than traditional
point to point connections.
MBMS is an IP datacast type of service in GSM and UMTS cellular network. It eliminates
unnecessary replication of data on UMTS wireless networks by transmitting a single stream
of data to multiple users. By delivering a single, unidirectional data stream to many
subscribers, MBMS makes more efficient use of wireless network resources than traditional
point to point connections.
MBMS is a solution for transferring light video and audio clips and also a suitable method
for mass communications. MBMS functionality on the system is provided by an existing
GGSN and/or SGSN service license. In the absence of a valid license, the system functions
as a standard unicast GGSN. When a GGSN is functioning in a MBMS environment, it
supports Gmb protocol interface with Broadcast/Multicast Service Center (BM-SC) for
messaging.
for mass communications. MBMS functionality on the system is provided by an existing
GGSN and/or SGSN service license. In the absence of a valid license, the system functions
as a standard unicast GGSN. When a GGSN is functioning in a MBMS environment, it
supports Gmb protocol interface with Broadcast/Multicast Service Center (BM-SC) for
messaging.
shows the reference architecture of MBMS service in UMTS network.
Figure 1-2 MBMS Reference Architecture in UMTS network
For more details on configuration of this service, refer Multimedia Broadcast and Multicast
Service chapter in System Enhanced Feature Configuration Guide.
Service chapter in System Enhanced Feature Configuration Guide.
Iu
Iu/Gb
Gn/Gp
GERAN
UTRAN
SGSN
GGSN
Gr
HLR
Multicast
Broadcast
Source
Gmb
Multicast Broadcast
Service Center
(BM-SC)
Gi
ASP/
Content Provider
Gi
PDN/Internet