System and Services of Terrestrial Digital Multimedia Broadcasting (T-DMB)

Cho, Sammo; Lee, GwangSoon; Bae, Byungjun; Yang, Kyutae; Ahn, Chang‐Beom; Lee, Soo In; Ahn, Chiteuk

doi:10.1109/tbc.2007.891712

Cited by 69 publications

(24 citation statements)

References 6 publications

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“…There are several standards for mobile TV networks, including T-DMB (Terrestrial-Digital Multimedia Broadcasting) [Cho et al 2007], ISDB-T (Integrated Services Digital Broad-casting-Terrestrial) [Takada and Saito 2006], DVB-H [Faria et al 2006;Kornfeld and May 2007], and MediaFLO [FLO Overview 2009]. A brief overview of each follows.…”

Section: Brief Background On Mobile Tv Networkmentioning

confidence: 99%

Using simulcast and scalable video coding to efficiently control channel switching delay in mobile tv broadcast networks

Hsu

Hefeeda

2011

ACM Trans. Multimedia Comput. Commun. Appl.

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Many mobile TV standards dictate using energy saving schemes to increase the viewing time on mobile devices, since mobile receivers are battery powered. The most common scheme for saving energy is to make the base station broadcast the video data of a TV channel in bursts with a bit-rate much higher than the encoding rate of the video stream, which enables mobile devices to turn off their radio frequency circuits when not receiving bursts. Broadcasting TV channels in bursts, however, increases channel switching delay. The switching delay is important, because long and variable switching delays are annoying to users and may turn them away from the mobile TV service. In this article, we first analyze the burst broadcasting scheme currently used in many deployed mobile TV networks, and we show that it is not efficient in terms of controlling the channel switching delay. We then propose new schemes to guarantee that a given maximum switching delay is not exceeded and that the energy consumption of mobile devices is minimized. We prove the correctness of the proposed schemes and analytically analyze the achieved energy saving. We also use scalable video coding to generalize the proposed schemes in order to support mobile devices with heterogeneous resources. We implement the proposed schemes in a mobile TV testbed to show their practicality and to validate our theoretical analysis. The experimental results show that the proposed schemes: (i) significantly increase the energy saving achieved on mobile devices: up to 95% saving is observed, and (ii) support both homogeneous and heterogeneous mobile devices.

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Section: Brief Background On Mobile Tv Networkmentioning

confidence: 99%

Using simulcast and scalable video coding to efficiently control channel switching delay in mobile tv broadcast networks

Hsu

Hefeeda

2011

ACM Trans. Multimedia Comput. Commun. Appl.

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“…There are several standards for dedicated video broadcast networks, including T-DMB (Terrestrial-Digital Multimedia Broadcasting) [40], ISDB-T (Integrated Services Digital…”

Section: Overviewmentioning

confidence: 99%

“…T-DMB [40] is an extension for the DAB (Digital Audio Broadcast) standard [42] to add video broadcast services to the high-quality audio services offered by DAB. The extension includes both source coding, such as using MPEG-4/AVC encoding, and channel coding, such as employing Reed-Solomon (R-S) code.…”

Section: Overviewmentioning

confidence: 99%

Efficient mobile multimedia streaming

Hsu¹

2010

SIGMultimedia Rec.

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Modern mobile devices have evolved into small computers that can render multimedia streaming content anywhere and anytime. These devices can extend the viewing time of users and provide more business opportunities for service providers. Mobile devices, however, make a challenging platform for providing high-quality multimedia services. The goal of this thesis is to identify these challenges from various aspects, and propose efficient and systematic solutions to solve them. In particular, we study mobile video broadcast networks in which a base station concurrently transmits multiple video streams over a shared air medium to many mobile devices. We propose algorithms to optimize various quality-of-service metrics, including streaming quality, bandwidth efficiency, energy saving, and channel switching delay. We analytically analyze the proposed algorithms, and we evaluate them using numerical methods and simulations. In addition, we implement the algorithms in a real testbed to show their practicality and efficiency. Our analytical, simulation, and experimental results indicate that the proposed algorithms can: (i) maximize energy saving of mobile devices, (ii) maximize bandwidth efficiency of the wireless network, (iii) minimize channel switching delays on mobile devices, and (iv) efficiently support heterogeneous mobile devices. Last, we give network operators guidelines on choosing solutions suitable for their mobile broadcast networks, which allow them to provide millions of mobile users much better viewing experiences, attract more subscribers, and thus increase the revenues.

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“…In this paper, we focus on broadcast networks, which have the potential to serve to a large number of subscribers. There are several systems and standards for video broadcast networks, including T-DMB [8], ISDB-T [9], MediaFLO [3], and DVB-H [2], [10]. Among the above broadcast networks, only DVB-H and MediaFLO try to minimize the energy consumption of mobile devices by periodically turning their RF circuits off.…”

Section: A Mobile Tv Networkmentioning

confidence: 99%

Time Slicing in Mobile TV Broadcast Networks with Arbitrary Channel Bit Rates

Hsu

Hefeeda

2009

Ieee Infocom 2009

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Abstract-Mobile TV networks have received significant attention from the industry and academia, as they have already been deployed in several countries and their expected market potential is huge. In such networks, a base station broadcasts TV channels in bursts with bit rates much higher than the encoding bit rates of the videos. This enables mobile receivers to receive a burst of traffic and then turn off their receiving circuit till the next burst to conserve energy. The base station needs to construct a transmission schedule for all bursts of different TV channels. Constructing optimal (in terms of energy saving) transmission schedules has been shown to be an NP-complete problem when the TV channels are encoded at arbitrary bit rates. In this paper, we propose a near-optimal approximation algorithm to solve this problem. We prove the correctness of the proposed algorithm and derive its approximation factor. We also conduct extensive evaluation of our algorithm using real implementation in a mobile TV testbed and simulations. Our experimental and simulation results show that the proposed algorithm: (i) is practical and produces correct burst schedules, (ii) achieves near-optimal energy saving for mobile devices, and (iii) runs efficiently in real time.

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System and Services of Terrestrial Digital Multimedia Broadcasting (T-DMB)

Cited by 69 publications

References 6 publications

Using simulcast and scalable video coding to efficiently control channel switching delay in mobile tv broadcast networks

Using simulcast and scalable video coding to efficiently control channel switching delay in mobile tv broadcast networks

Efficient mobile multimedia streaming

Time Slicing in Mobile TV Broadcast Networks with Arbitrary Channel Bit Rates

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