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Performance of Cost-Based Resource Management in Cellular-Broadcasting Systems with Multicast Push Traffic
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
2005 (English)Report (Other academic)
Place, publisher, year, edition, pages
2005.
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-26042OAI: oai:DiVA.org:kth-26042DiVA: diva2:369315
Note
QC 20101110Available from: 2010-11-10 Created: 2010-11-10 Last updated: 2010-11-10Bibliographically approved
In thesis
1. Hybrid cellular-broadcasting infrastructure systems: radio resource management issues
Open this publication in new window or tab >>Hybrid cellular-broadcasting infrastructure systems: radio resource management issues
2006 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

This thesis addresses the problem of low-cost multicast delivery of multimedia content in future mobile networks. The trend towards reuse of existing infrastructure for cellular and broadcasting for building new systems is challenged, with respect to the opportunities for low cost service provision and scalable deployment of networks.

The studies outline significant potential of hybrid cellular-broadcasting infrastructure to deliver lower-cost mobile multimedia, compared to conventional telecom or broadcasting systems. Even with simple interworking techniques the achievable cost savings can be significant, at least under some specific settings.

The work starts with a foresight study shaped around four scenarios of the future, and continues with the introduction of a high-level framework for radio resource management in Ambient Networks. Two approaches on the hybrid system architecture are considered. The first one assumes different degrees of interworking between conventional cellular and broadcasting systems, in single and multi-operator environments. Second, is a broadcast only system where cellular sites are used for synchronized, complementary transmitters for the broadcasting site. In the first approach, the key issue is the multi-radio resource management, which is strongly affected by the degree of integration between the two networks. Two case studies deal with the problem of delivering, for lowest cost, a data item to a certain number of recipient users. A flexible broadcasting air interface, which offers several transmission data rates that can be dynamically changed, is demonstrated to significantly increase cost efficiency under certain conditions. An interesting result is that real-time monitoring of the user reception conditions is not needed, at least when multicast group is large. This indicates a high degree of integration between cellular and broadcasting networks may not by generally justified by visible cost savings.

Scalability of the hybrid infrastructure deployment is the main topic in the second approach. For a DVB-H type of network, the numerical evaluations show that achievement of economies of scale while increasing network capacity and coverage, by employing higher modulation and coding rate or installing new transmission sites, is difficult. Therefore, a technique based on application-layer forward error correction with Raptor codingA is suggested for enabling a flexible trading between system capacity, perceived coverage and delay, in the case of mobile users.

Place, publisher, year, edition, pages
Stockholm: Kommunikationssystem, 2006. xi, 75 p.
Series
Trita-ICT-COS, ISSN 1653-6347 ; 0601
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-3922 (URN)
Presentation
2006-04-21, Sal C1, Electrum, Isafjordsgatan 22, Kista, 14:00
Note
QC 20101110Available from: 2006-04-20 Created: 2006-04-20 Last updated: 2010-11-10Bibliographically approved

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