Application Layer FEC for Mobile TV Delivery in IP Datacast Over DVB-H Systems

Gómez-Barquero, David; Gozalvez, D.; Cardona, Narcís

doi:10.1109/tbc.2008.2012024

Cited by 53 publications

(42 citation statements)

References 9 publications

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“…The main contribution of this chapter is the proposal of using AL-FEC with Raptor coding to perform a multi-burst protection of the transmission for DVB-H streaming services [79]. The idea was first introduced and evaluated in [80], where it was proposed to transmit additional bursts with repair data after the original data bursts in order to increase the chances of receiving the information correctly 22 .…”

Section: Chapter 2 -Upper Layer Fec In Dvb-hmentioning

confidence: 99%

“…This framework is also defined backwards-compatible with DVB-H, and it allows employing Raptor coding in a similar way than the proposed by the author in [79], but at the link layer. It should be pointed out that the performance in both cases (link and application layers) is practically the same, and only some implementation and signaling specific aspects differ.…”

Section: Chapter 2 -Upper Layer Fec In Dvb-hmentioning

confidence: 99%

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Cost Efficient Provisioning of Mass Mobile Multimedia Services in Hybrid Cellular and Broadcasting Systems

Barquero¹

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One of the challenges that the wireless industry faces today is to provide mass multimedia services to mobile and portable devices at low cost, making them affordable to users and profitable to operators. The most representative service is mobile TV, which is expected to become a key application in future wireless networks. Nowadays cellular networks cannot support large scale consumption of such services, and newly deployed mobile broadcasting networks are very expensive to deploy due to the large investment in infrastructure required to provide acceptable coverage levels.This dissertation addresses the problem of providing a cost efficient provisioning of mass mobile multimedia services with existing wireless infrastructure for digital broadcasting and cellular systems. State-of-the-art mobile broadcasting (DVB-H) and cellular (evolved 3G+ networks with HSDPA and MBMS) commercial technologies have been considered. Our approach is DVB-H centric. The main paradigm proposed to provide lower cost services is to avoid deployment a DVB-H network with high capacity and full area coverage from the beginning. Instead, it is proposed to perform an incremental DVB-H network deployment that follows the user demand. Within this context, the cellular network is essential to avoid over-dimensioning the broadcast capacity, and also in low populated areas until the deployment of a DVB-H transmitter or gap-filler becomes convenient.The main technical solution proposed in this dissertation is to perform a multi-burst protection of the transmission in DVB-H using Raptor coding. The idea behind is to exploit the time diversity of the mobile channel to improve the robustness of the transmission, and thus the coverage level, at the expense of an increased network latency. Contrarily to most technical enhancements proposed in the literature, the introduction of this technique would be backwards-compatible with existing networks and terminals, since it could be introduced as a software update either at the link or the application layer.On the other hand, this dissertation also investigates the potential efficiency improvement that can be achieved in a hybrid DVB-H/3G+ system when the cellular network is used to repair errors of the broadcast DVB-H transmissions. Raptor coding is also considered in this case, but at the application layer; since it enables an easy and efficient implementation of the repair mechanisms in such hybrid systems.iii iv ABSTRACT In the dissertation we evaluate the potential gain that can be obtained with multi-burst forward error correction (FEC) in DVB-H compared to the conventional intra-burst FEC mechanism by means of simulations, lab and field measurements, and theoretical studies. Our results show that it is feasible to significantly increase the area coverage and the service quality in already deployed networks, as well as to reduce the investment in infrastructure required to deploy new networks. The gain is especially important for services where a large latency is not an issue, such as file do...

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Section: Chapter 2 -Upper Layer Fec In Dvb-hmentioning

confidence: 99%

Section: Chapter 2 -Upper Layer Fec In Dvb-hmentioning

confidence: 99%

Cost Efficient Provisioning of Mass Mobile Multimedia Services in Hybrid Cellular and Broadcasting Systems

Barquero¹

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“…The results obtained in field tests [44,45] have revealed that the use of TI at the physical layer outperforms MPE-iFEC in every reception scenario. Although long TI achieves the largest gain in LMS channels, it has been shown to achieve significant gains in terrestrial channels as well [10,46,47]. In particular, the utilization of Application Layer -Forward Error Correction (AL-FEC) has been proposed for extending the protection of DVB-H services across multiple time-slicing bursts.…”

Section: Time Diversity In Mobile Broadcasting Systemsmentioning

confidence: 99%

“…AL-FEC was standardized in DVB-H for file delivery services [48], and is based on Raptor codes [49] for encoding large amounts of information in a joint manner. Although AL-FEC is currently not standardized for the protection of streaming services, it can be implemented in DVB-H with some minor modifications [46].…”

Section: Time Diversity In Mobile Broadcasting Systemsmentioning

confidence: 99%

“…be implemented with some minor changes in mobile broadcasting DVB systems such as DVB-H or DVB-SH [46] by following the FEC streaming framework defined by the Internet Engineering Task Force (IETF) and already adopted by Third Generation Partnership Program (3GPP) Multimedia Broadcast Multicast Services (MBMS) [87]. Alternative implementations of AL-FEC based on Moving Picture Experts Group 2 (MPEG-2) Transport Stream (TS) packets could be also used in terrestrial broadcasting DVB systems like DVB-T or DVB-T2 [88].…”

Section: Time Diversity Techniquesmentioning

confidence: 99%

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Combined Time, Frecuency and Space Diversity in Multimedia Mobile Broadcasting Systems

Serrano¹

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The combined use of diversity in the time, frequency, and space domains constitutes a powerful instrument to improve the reception of mobile broadcasting services. The improvement brought by the utilization of diversity techniques can be translated into an extended coverage of mobile services, or into a reduction of the network infrastructure. This dissertation addresses the use of diversity for the provision of mobile services in the European family of terrestrial broadcasting systems standardized by the DVB (Digital Video Broadcasting) consortium. This includes the first and second generation systems DVB-T (Terrestrial), DVB-H (Handheld) and DVB-T2 (Terrestrial 2nd Generation), as well as the next generation system DVB-NGH. Nevertheless, the work carried out in this dissertation is of generic nature and can be applied to future evolutions of standards such as the Japanese ISDB-T or the American ATSC. Our investigations employ an information-theoretic approach to obtain the performance limits of diversity techniques, as well as physical layer simulations to evaluate the performance in real systems.The investigations carried out in the context of DVB-T, DVB-H, and DVB-T2 are aimed at the simultaneous delivery of fixed and mobile services in terrestrial broadcasting networks. The convergence of the fixed and mobile paradigms can facilitate the introduction of mobile TV services by allowing the reuse of spectrum, content and infrastructure. The results show that the incorporation of time interleaving (TI) at the physical layer for time diversity, and single-input multiple-output (SIMO) for space diversity are critical for the performance of mobile broadcasting systems. Upper layer FEC (UL-FEC) techniques can be used to achieve time diversity in first generation systems like DVB-T and DVB-H; however, they require the transmission of additional parity data and are not useful for stationary reception. The analysis in terms of link budget reveals that the combined use of time and space diversity is not sufficient to enable the provision of mobile services with acceptable coverage levels in DVB-T and DVB-T2 networks planned for fixed reception. In contrast, diversity techniques can be used in networks planned for portable indoor iii ABSTRACT reception to increase the capacity of vehicular services and extend the coverage of handheld indoor reception.The utilization of combined diversity in the time, frequency, and space domains has been investigated in the context of DVB-NGH, the first broadcasting system to exploit the diversity in the three domains by incorporating at the physical layer long TI, time-frequency slicing (TFS) and multiple-input multiple-output (MIMO). In addition, the adoption of rotated constellations provides better robustness against fading by means of signal-space diversity (SSD).DVB-NGH features an optional satellite component, and has adopted long TI in order to cope with the signal outages that are characteristic of land mobile satellite (LMS) channels. However, the solution adopted in t...

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Variable FEC Decoding Delay and Playout Slowdown Method for Low Start Delay and Fast Channel Change for Video Streaming in DVB-SH Mobile Broadcast Systems

Faucheux¹,

Morel²,

Kerboeuf³

et al. 2012

Bell Labs Tech. J.

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In the digital video broadcasting satellite services to handhelds (DVB-SHdevices such as smartphones are becoming key services in wireless networks. However, media streaming over the Internet or over Internet Protocol (IP) packet-based wireless networks is sensitive to packet loss which impacts the quality of experience for the end user. Indeed, packet loss can cause errors or even interruption in video playout. This problem is even more drastic for media streaming over mobile broadcast communication systems such as in digital

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Application Layer FEC for Mobile TV Delivery in IP Datacast Over DVB-H Systems

Cited by 53 publications

References 9 publications

Cost Efficient Provisioning of Mass Mobile Multimedia Services in Hybrid Cellular and Broadcasting Systems

Cost Efficient Provisioning of Mass Mobile Multimedia Services in Hybrid Cellular and Broadcasting Systems

Combined Time, Frecuency and Space Diversity in Multimedia Mobile Broadcasting Systems

Variable FEC Decoding Delay and Playout Slowdown Method for Low Start Delay and Fast Channel Change for Video Streaming in DVB-SH Mobile Broadcast Systems

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