Cisco Cisco Packet Data Gateway (PDG) Fehlerbehebungsanleitung
Multimedia Broadcast and Multicast Service
▀ How MBMS Works
▄ Cisco ASR 5000 Series Enhanced Feature Configuration Guide
OL-22982-01
Step 2
Session Start: This is the phase where BM-SC has data to send and this triggers establishment of network resources for
data transfer irrespective of whether a given user has activated the service or not.
data transfer irrespective of whether a given user has activated the service or not.
Step 3
MBMS Notification: Notifies the MS of a impending MBMS data transfer.
Step 4
Data Transfer: It is the phase when MBMS data are transferred to the UEs.
Step 5
Session Stop: In this phase, the BM-SC determines that it has no more data to send for a time period and so the network
resources can be released.
resources can be released.
MBMS Multicast Mode
The multicast mode provides unidirectional point-to-multipoint type transmission of multimedia data from a single
content source to a group of subscribers that subscribed to specific multicast service separately. The basic difference
between broadcast and multicast modes is that the user does not need to subscribe in each broadcast service separately,
whereas in multicast mode the services cab be order separately. The subscription and group joining for the multicast
mode service can be done by the operator, user, or a separate service provider.
content source to a group of subscribers that subscribed to specific multicast service separately. The basic difference
between broadcast and multicast modes is that the user does not need to subscribe in each broadcast service separately,
whereas in multicast mode the services cab be order separately. The subscription and group joining for the multicast
mode service can be done by the operator, user, or a separate service provider.
Like broadcast mode the multicast mode allows the unidirectional point-to-multipoint transmission of multimedia data
within the multicast service area. The multicast mode uses radio resources in efficient way by using common radio
channel as in broadcast mode. Data is transmitted over the multicast service area as defined by the network operator.
within the multicast service area. The multicast mode uses radio resources in efficient way by using common radio
channel as in broadcast mode. Data is transmitted over the multicast service area as defined by the network operator.
The multicast mode provides the flexibility for the network to selectively transmit to those cells within the multicast
service area that contains members of a multicast group.
service area that contains members of a multicast group.
The following figure shows the basic outline of multicast mode procedure of an MBMS service in order to multicast
MBMS data within the defined multicast service area via a packet switched core network.
MBMS data within the defined multicast service area via a packet switched core network.