DVB-SH, Digital Video Broadcasting - Satellite services to Handhelds, is a physical layer standard for delivering IP based media content and data to handheld terminals such as mobile phones or PDAs, based on a hybrid satellite/terrestrial downlink and for example a GPRS uplink. The DVB Project published the DVB-SH standard in February 2007.
The DVB-SH system was designed for frequencies below 3 GHz, supporting UHF band, L Band or S-band. It complements and improves the existing DVB-H physical layer standard. Like its sister specification (DVB-H), it is based on DVB IP Datacast (IPDC) delivery, electronic service guides and service purchase and protection standards.
DVB-SH specifies two operational modes:
The DVB-SH incorporates a number of enhancements when compared to DVB-H:
Recently, results from BMCO forum (Alcatel April 2008) shows a radio improvement of at least 5.5 dB on signal requirements between DVB-H and DVB-SH in the UHF frequencies. The improvements to signal requirements translates to better in-building penetration, better in-car coverage and extension of outdoor coverage. DVB-SH chipsets are being developed now by Dibcom and NXP, and are expected to be available in beginning of 2008. Initial specifications show that the chipsets supports both UHF and S-Band and are compatible with DVB-H.
Recently, the Indian regulator, TRAI, started to study DVB-SH as a major improvement of the DVB-H initial standard.
DVB-SH in S-band is seen as a alternative in Europe. Recent field trials and studies showed better performance in radio than DVB-H standard that would lead to much cheaper costs for network deployments.
In France again, SFR and Alcatel-Lucent teamed up to deploy a DVB-SH trial. The results confirmed the theorical assumptions on the superiority of the DVB-SH to DVB-H, being the natural evolution of this legacy one.
SFR and Alcatel-Lucent field validated the fundamental assumptions for the deployment of a DVB-SH mobile TV terrestrial network.(STANDARDS)
Jan 01, 2008; Alcatel-Lucent announced that, following the DVB-SH pilot jointly performed by SFR and Alcatel-Lucent from July to...
ICO and Alcatel-Lucent to Demo First Mobile TV Broadcast in North America Based on the DVB-SH Satellite/ Terrestrial Standard at CES
Jan 02, 2008; Wireless News 01-02-2008 ICO and Alcatel-Lucent to Demo First Mobile TV Broadcast in North America Based on the DVB-SH...