Conference Paper

SINR-Based Transport Channel Selection for MBMS Applications

Dept. DIMET, Univ. Mediterranea of Reggio Calabria, Reggio Calabria
DOI: 10.1109/VETECS.2009.5073855 Conference: Vehicular Technology Conference, 2009. VTC Spring 2009. IEEE 69th
Source: IEEE Xplore


Multimedia broadcast multicast services (MBMS), introduced by Third Generation Partnership Project (3GPP) in universal mobile telecommunications system (UMTS) release 6 specification, have the aim to support downlink streaming and game services to groups of users. MBMS can supply users with resources in two different modalities: point-to-point (PtP) and point-to-multipoint (PtM). The power consumed by the network is an important topic to discuss when considering the presence of MBMS services. The UMTS system is, in fact, interference- limited; thus, the power available to Node B is limited and it must be enough to serve any user under its coverage. Therefore, the choice of the most efficient transport channel in terms of power consumption is a key aspect for the MBMS, since a wrong transport channel selection for the transmission of the MBMS data could adversely affect the overall capacity of the system. In this paper we search for the most efficient transport channel to convey MBMS data, by comparing the performance of the high speed downlink shared channel (HS-DSCH), the dedicated channel (DCH), and the forward access channel (FACH), for given transmission power levels and cell coverage size.

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    • "Several RRM policies have been proposed in the past to select the transport channel type that maximizes the number of MBMS users in the system [6] [7] [8] [9] [10]. Studies demonstrated that the PtM transmission over HS-DSCH is the most promising approach [10]. "
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    ABSTRACT: In this paper an innovative Radio Resource Management (RRM) algorithm is proposed with the purpose of increasing High Speed Packet Access (HSPA) performances, in terms of system capacity and service quality, when the Multimedia Broadcast Multicast Services (MBMS) is supplied. The proposed RRM algorithm exploits channel quality indications to set up point-to-multipoint connections to subgroups of multicast users and to select the proper modulation and coding schemes on the downlink. The number of subgroups is determined through an optimization technique that also takes into account the user satisfaction. An exhaustive simulation campaign is conducted to compare the proposed algorithm with the most promising approaches in the literature. Comparisons aim to assess the capability of the proposed RRM algorithm to efficiently manage group oriented services by providing an increment in terms of user satisfaction.
    IEEE International Symposium on Broadband Multimedia Systems and Broadcasting; 06/2011
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    • "Several research works have been conducted, targeted to the reduction of the consumed power for MBMS data delivery, which, however, takes into account the UMTS terrestrial network only. For instance, in [3] [4] [5] the authors carry out studies for the selection of the most efficient transport channel depending on several issues, such as application bit rate and user positions. Instead, in [6] the authors propose to set the FACH transmission power depending on the location of the farthest user belonging to the multicast group; while in [7] a mixed usage of multiple DCH and FACH channels is suggested with the aim of saving transmission power. "
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    ABSTRACT: The goal of this research work is to investigate how efficient High Altitude Platforms (HAPs) can be in supporting Multimedia Broadcast/Multicast Service (MBMS) in scenarios in which the terrestrial coverage is not available. Specifically, we propose to implement an effective Radio Resources Management (RRM) policy into the HAP Radio Network Controller (H-RNC), whose main aim is to increase the overall system capacity. The proposed technique achieves its goal by dynamically selecting the most efficient multicast transport channel in terms of power consumption, chosen amongst Dedicated Channel (DCH), Forward Access Channel (FACH), and High Speed Downlink Shared Channel (HS-DSCH). Advantages deriving from the joint use of channels belonging to different categories are exploited. Results achieved when using the proposed RRM are quite manifest and witnesses to the necessity of providing such a feature when deploying integrated HAP/Terrestrial platforms supporting MBMS services.
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  • Edited by Kandeepan Sithamparanathan, Mario Marchese, 12/2009; Springer., ISBN: 978-3-642-04260-7