One of the challenges of the mobile industry is to cope with the growth of mobile traffic
demand expected for the next years, primarily driven by the increasing usage of mobile
video services. Indeed, the existence of increasingly powerful terminals is encouraging
the consumption of high-quality video content. Usually, video services are identified
with linear Television (TV) and scheduled broadcast (point-to-multipoint (p-t-m))
distribution. However, the consumption of video content over mobile networks is
different from traditional fixed TV because contents are mainly consumed on-demand
with unicast point-to-point (p-t-p) connections. Then, the convergence of linear TV and
on-demand content delivery represents a challenge that requires a combined
broadcast/unicast transmission model.
This dissertation addresses the use of broadcasting technologies for the provision of
mobile multimedia services in Fourth Generation (4G) mobile broadband networks and
beyond. Specifically, the dissertation focuses on the broadcast technology included in
4G Long Term Evolution (LTE) and LTE Advanced (LTE-A) networks, known as
Enhanced Multicast Broadcast Multimedia Services (eMBMS). It analyses the benefits
of the eMBMS physical layer aspects regarding Multimedia Broadcast Multicast
Services over a Single Frequency Network (MBSFN) deployments and identifies the
current limitations of eMBMS at physical layer by comparing with the broadcast
technology of the other 4G mobile system, the Institute of Electrical and Electronics
Engineers (IEEE) 802.16m standard. Those limitations are the use of a dedicated carrier
and Multiple-Input Multiple-Output (MIMO) techniques for broadcast transmissions.
Our investigations employ a complete simulation platform including link-level and
system-level simulations to evaluate the performance of broadcast transmissions in
these real technologies.
The research on eMBMS services is aimed at finding the optimum delivery of streaming
and file download services focusing on the Radio Resource Management (RRM)
problem and trade-off between Physical layer – Forward Error Correction (PHY-FEC)
and Application Layer - Forward Error Correction (AL-FEC). Concerning streaming
services, results show that the use of AL-FEC increases the coverage level and, then, the
maximum service data rate. The gain due to AL-FEC is greater in scenarios with high
mobility users, although, this gain is limited if low zapping times are desired. Regarding
file delivery services, this dissertation analyses the duration of the transmission required
to guarantee the correct file reception and the reduction in the mean throughput of
unicast users with different delivery modes. They are the unicast delivery, the eMBMS
delivery and a hybrid approach, which combines a first eMBMS delivery with a postdelivery
error repair phase with unicast transmissions. Our results show that the hybrid
delivery is the most efficient configuration in terms of file download time, although it
further reduces unicast performance. / Calabuig Gaspar, J. (2015). Broadcasting in 4G mobile broadband networks and its evolution towards 5G [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/48561 / TESIS
| Identifer | oai:union.ndltd.org:upv.es/oai:riunet.upv.es:10251/48561 |
| Date | 31 March 2015 |
| Creators | CALABUIG GASPAR, JORGE |
| Contributors | Gómez Barquero, David, Monserrat del Río, José Francisco, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions |
| Publisher | Universitat Politècnica de València |
| Source Sets | Universitat Politècnica de València |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/doctoralThesis, info:eu-repo/semantics/acceptedVersion |
| Rights | http://rightsstatements.org/vocab/InC/1.0/, info:eu-repo/semantics/openAccess |
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