Abstract
A novel technique for implementing statistical multiplexing (StatMux) of broadcast services over Digital Video Broadcasting for Handhelds (DVB-H) channels is proposed. DVB-H uses a time-sliced transmission scheme to reduce the power consumption used for radio reception part in DVB-H receivers. Due to the time-sliced transmission scheme, the implementation of known StatMux methods for DVB-H application presents some challenges which are addressed in this paper. The proposed StatMux technique is implemented in conjunction with the time-slicing transmission scheme. The combination is similar to a time division multiplexing (TDM) scheme. The proposed StatMux method considerably decreases the end-to-end delay of DVB-H services while it maximizes the usage of available bandwidth. Moreover, the proposed method can effectively decrease the channel switching delay of DVB-H services. Simulation results show a high performance for the proposed StatMux method.
Highlights
Digital Video Broadcasting for Handhelds (DVB-H) (Digital Video Broadcasting for Handheld terminals) is an ETSI standard specification for bringing broadcast services to battery-powered handheld receivers [1]
In statistical multiplexing (StatMux) of variable bit rate (VBR) traffics, the efficiency of transmission bandwidth depends on the number of multiplexed services and on the variations that exist in the bit rate of bit streams
The service bit streams were generated by a model that is targeted for controlled VBR video traffic [12, 39]
Summary
DVB-H (Digital Video Broadcasting for Handheld terminals) is an ETSI standard specification for bringing broadcast services to battery-powered handheld receivers [1]. DVBH is mostly based on the successful DVB-T standard specification for digital terrestrial television, adding to it a number of features designed to take into account the limited battery life of small handheld devices, and the particular environments in which such receivers typically operate [2]. To reduce the power consumption in handheld terminals, the service data is time sliced and transmitted over the channel as bursts at a significantly higher bit rate than the bit rate of the audiovisual service [3]. Data of the same service is not transmitted, allowing other services to use the bandwidth
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