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DVB-H (Digital Video Broadcasting - Handheld) is one of three prevalent mobile TV formats.
It is a technical specification for bringing broadcast services to mobile handsets.
In 2002 four main requirements of the DVB-H system were agreed: broadcast services for portable and mobile usage with 'acceptable quality'; a typical user environment, and so geographical coverage, as mobile radio; access to service while moving in a vehicle at high speed (as well as imperceptible handover when moving from one cell to another); and as much compatibility with existing digital terrestrial television (DVB-T), to allow sharing of network and transmission equipment.
DVB-H can offer a downstream channel at high data rates which can be used as standalone or as an enhancement of mobile telecommunication networks which many typical handheld terminals are able to access anyway.
Time slicing technology is employed to reduce power consumption for small handheld terminals.
IP datagrams are transmitted as data bursts in small time slots.
In May 2006 they announced that they had signed a contract with Nokia to use its DVB-H platform for the service.They cover system architecture, use cases, DVB PSI/SI signalling, electronic service guide (ESG), content delivery protocols (CDP), and service purchase and protection (SPP).Almost all of these have now been published as formal ETSI standards.The major competitors of this technology are Qualcomm's Media FLO system, the 3G cellular system based MBMS mobile-TV standard, and the ATSC-M/H format in the U. DVB-SH (Satellite to Handhelds) now and DVB-NGH (Next Generation Handheld) in the future are possible enhancements to DVB-H, providing improved spectral efficiency and better modulation flexibility.DVB-H has been a commercial failure, and the service is no longer on-air DVB-H technology is a superset of the successful DVB-T (Digital Video Broadcasting - Terrestrial) system for digital terrestrial television, with additional features to meet the specific requirements of handheld, battery-powered receivers.