TVB Tech Alert: 3GPP Integrated Mobile Broadcasting Standard
September 10, 2009
new third-generation standard for mobile broadcasting was ratified this week by
the Global System for Mobile Association. The new 3GPP Integrated Mobile Broadcast
Standard facilitates mobile broadcasting over different types of cell networks.
It allows uninterrupted handover of voice and data transmissions to legacy 3G
IMB allows the use of 1 MB frequencies, now unused by many cellular providers,
and it “reuses” aspects of currently deployed technology the GSMA said.
The 3GPP specs and an accompanying white paper gives infrastructure builders and
handset manufacturers guidelines for creating common implementations of IMB
intended to drive mass adoption. These include video delivery, about which the
white paper acknowledges the sluggish start in the cell-phone industry.
“The simplest Mobile TV deployment makes conventional linear TV available to
mobile users. Historically, this has been perceived as the driving application
for mobile broadcast network capabilities. In reality, the relatively low
take-up--in comparison with predictions--points to several obstacles in the
mobile environment today.
“Small-scale mobile TV deployments usually start with unicast 3G streaming, but
this has been hampered by its large bandwidth consumption and the limitations
of unicast networks in simultaneously supporting large numbers of TV viewers.
This also has a significant impact on the economics of mobile TV and has further
slowed the introduction and take-up of linear TV services.
“IMB addresses these challenges by providing an enhanced user experience across
factors such as image quality and channel swap times; and radically improved
economics for linear TV broadcast
through optimized delivery through mobile networks.”
The white paper is available for download from the GSM Web site here.