The MBMS is a unidirectional point to multipoint bearer service in which data is transmitted from a single source entity to multiple recipients. These services will typically be in the form of streaming video and audio and should not be confused with the CBS (Cell Broadcast Service) that is currently supported. This paper describes the architecture of the MBMS along with its functional notes and integration into 3G and GERAN (GSM & EDGE Radio Access Network) with Core Network, UTRAN (UMTS Terrestrial Radio Access Network) and radio aspects being explained

pls send detailed description or ppt of MBMS to my mail:divya20vijay[at]gmail.com.pls send today itself

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The MBMS feature split into the MBMS Bearer Service and the MBMS User Service. The MBMS Bearer Service includes a Multicast- and a Broadcast Mode. The MBMS Bearer Service uses IP Multicast addresses for the IP flows. The advantage of the MBMS Bearer Service compared to legacy UMTS bearer services (interactive, streaming, etc) is, that the transmission resources in the core- and radio network are shared. One MBMS packet flow is replicated by GGSN, SGSN and RNCs. MBMS may use an advanced counting scheme to decide, whether or not zero, one or more dedicated (i.e. unicast) radio channels lead to a more efficient system usage than one common (i.e. broadcast) radio channel. UTRAN MBMS offers up to 256kbit/s per MBMS Bearer Service and between 800kbit/s and 1.7Mbit/s per cell/band. The actual cell capacity depends on the UE capabilities. GERAN MBMS offers between 32kbit/s and 128kbit/s. Up to 4 GSM Timeslot may be used for one MBMS bearer in downlink direction. The actual data rate per Traffic Slot depends on network dimensioning. The MBMS User Service is basically the MBMS Service Layer and offers a Streaming- and a Download Delivery Method. The Streaming Delivery method can be used for continuous transmissions like Mobile TV services. The Download Method is intended for "Download and Play" services. To increase the transmission reliability, an application layer FEC code may be used. Further, a file-repair service may be offered to complement the download delivery method. MBMS has been standardized in various groups of 3GPP (Third Generation Partnership Project), and the first phase standards are found in UMTS. As Release 6 was functionally frozen by the 3rd quarter of 2004, practical network implementations may be expected by the end of 2007, and the first functional mobile terminals supporting MBMS are estimated to be available by also end of 2007.MBMS is believed to be currently under active evaluation by Mobile Network Operators as a means of delivering Mobile Television to the mass market. Competing technologies include DVB-H, DMB, EPM-DAB, BCAST and FLO. However due to spectrum availability and the cost of building new broadcast infrastructure these technologies may not be viable. On the other hand, FLO has been deployed commercially in the US by Verizon Wireless through their relationship with MediaFLO USA, Inc. (a subsidiary of Qualcomm). DMB Digital Multimedia Broadcasting and DVB-H trials have been ongoing for more than a year now, like those during the football 2006 championships in Germany. MBMS technologies, like TDtv are now also in trials in the UK, however DMB and DVB-H seem to still hold a time to market advantage over MBMS technologies.


if you want again more information about MBMS
then please use http://en.wikipediawiki/Multimedia_Broad...st_Service
http://medialab.sonera.fi/workspace/MBMSWhitePaper.pdf
http://wasetjournals/waset/v18/v18-4.pdf
http://3g4g.co.uk/Mbms/GSM/magesh_annama...report.pdf
http://findrohan.8mMBMS.pdf

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http://researchandmarketsreports/683106/multimedia_broadcasting_and_multicasting_in.pdf
http://ieeexplore.ieeexpls/abs_all.jsp?arnumber=1434555 (Ieee article)