Journal Articles
Christos Bouras; Antonios Alexiou; Andreas Papazois
A study of Forward Error Correction for Mobile Multicast Journal Article
In: International Journal of Communication Systems, Wiley InterScience, pp. 607-627, pp. 607 - 627, 2011.
Abstract | Links | BibTeX | Tags: FEC, MBMS, Power Control, UMTS
@article{3101,
title = {A study of Forward Error Correction for Mobile Multicast},
author = {Christos Bouras and Antonios Alexiou and Andreas Papazois},
url = {https://telematics.upatras.gr/12101178_ftp/},
year = {2011},
date = {2011-01-01},
urldate = {2011-01-01},
journal = {International Journal of Communication Systems, Wiley InterScience, pp. 607-627},
pages = {607 - 627},
abstract = {3GPP has standardized the use of forward error correction for the provision of reliable data transmission in the mobile multicast framework. This error control method inevitably adds a constant overhead in the transmitted data. However, it is so simple as to meet a prime objective for mobile multicast services; that is scalability to applications with thousands of receivers. In this paper we present a study on the impact of application layer forward error correction. We examine whether it is beneficial or not, how the optimal code dimension varies based on network conditions, which parameters affect the optimal code selection, and how they achieve this. Additionally, we focus on one of the most critical aspects in mobile multicast transmission which is power control. The evaluation is performed with the aid of a novel scheme that incorporates the properties of an evolved mobile network, as they are determined by the 3GPP specifications.},
keywords = {FEC, MBMS, Power Control, UMTS},
pubstate = {published},
tppubtype = {article}
}
3GPP has standardized the use of forward error correction for the provision of reliable data transmission in the mobile multicast framework. This error control method inevitably adds a constant overhead in the transmitted data. However, it is so simple as to meet a prime objective for mobile multicast services; that is scalability to applications with thousands of receivers. In this paper we present a study on the impact of application layer forward error correction. We examine whether it is beneficial or not, how the optimal code dimension varies based on network conditions, which parameters affect the optimal code selection, and how they achieve this. Additionally, we focus on one of the most critical aspects in mobile multicast transmission which is power control. The evaluation is performed with the aid of a novel scheme that incorporates the properties of an evolved mobile network, as they are determined by the 3GPP specifications.
Christos Bouras; Antonios Alexiou; Andreas Papazois
An Efficient Mechanism for UMTS Multicast Routing Journal Article
In: Mobile Networks and Applications, Springer Verlang, pp. 802-815, vol. 15, pp. 802 - 815, 2010.
Abstract | Links | BibTeX | Tags: MBMS, UMTS
@article{3095,
title = {An Efficient Mechanism for UMTS Multicast Routing},
author = {Christos Bouras and Antonios Alexiou and Andreas Papazois},
url = {https://telematics.upatras.gr/1932acmmonet/},
year = {2010},
date = {2010-01-01},
urldate = {2010-01-01},
journal = {Mobile Networks and Applications, Springer Verlang, pp. 802-815},
volume = {15},
pages = {802 - 815},
abstract = {In this paper, we present a novel scheme for the multicast transmission of data over Universal Mobile Telecommunications System (UMTS) networks. Apart from the normal multicast transmission over UMTS, we consider the handling of exceptional cases caused by user mobility scenarios. The proposed scheme is in accordance with the current specifications of the Multimedia Multicast/ Broadcast Service (MBMS) defined by the 3rd Generation Partnership Project (3GPP) and introduces minor modifications in the UMTS architecture and the mobility management mechanisms. The proposed scheme is implemented as an ns-2 network simulator module. The performance of the proposed scheme is validated and analyzed through ns-2 simulation experiments. This new module can be employed to investigate various aspects of UMTS multicast. Furthermore, in order to further highlight the contribution of our mechanism, we have implemented two multicast congestion control mechanisms for UMTS and we have measured their performance for MBMS transmissions.},
keywords = {MBMS, UMTS},
pubstate = {published},
tppubtype = {article}
}
In this paper, we present a novel scheme for the multicast transmission of data over Universal Mobile Telecommunications System (UMTS) networks. Apart from the normal multicast transmission over UMTS, we consider the handling of exceptional cases caused by user mobility scenarios. The proposed scheme is in accordance with the current specifications of the Multimedia Multicast/ Broadcast Service (MBMS) defined by the 3rd Generation Partnership Project (3GPP) and introduces minor modifications in the UMTS architecture and the mobility management mechanisms. The proposed scheme is implemented as an ns-2 network simulator module. The performance of the proposed scheme is validated and analyzed through ns-2 simulation experiments. This new module can be employed to investigate various aspects of UMTS multicast. Furthermore, in order to further highlight the contribution of our mechanism, we have implemented two multicast congestion control mechanisms for UMTS and we have measured their performance for MBMS transmissions.
Christos Bouras; Antonios Alexiou; Vasileios Kokkinos; Evangelos Rekkas
An Improved Mechanism for Multiple MBMS Sessions Assignment in B3G Cellurar Networks Journal Article
In: Wireless Networks, Springer Verlang, pp. 671-686, vol. 16, pp. 671 - 686, 2010.
Abstract | Links | BibTeX | Tags: MBMS, Power Control, UMTS
@article{3088,
title = {An Improved Mechanism for Multiple MBMS Sessions Assignment in B3G Cellurar Networks},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos and Evangelos Rekkas},
url = {https://telematics.upatras.gr/3071winet/},
year = {2010},
date = {2010-01-01},
urldate = {2010-01-01},
journal = {Wireless Networks, Springer Verlang, pp. 671-686},
volume = {16},
pages = {671 - 686},
abstract = {In Universal Mobile Telecommunication System (UMTS), the downlink capacity is limited by the base station transmission power. Therefore, power control plays an important role to minimize the transmitted power shared among unicast and multicast users within a cell. In Multimedia Broadcast/Multicast Service (MBMS), power control targets to the efficient utilization of radio and network resources. However, the expected high demand for such services stresses the need for an efficient scheme, capable of dynamically allocating radio resources to parallel MBMS sessions. This paper proposes a power control mechanism for efficient MBMS session assignment in next generation UMTS networks. The mechanism shares efficiently the available power resources of UMTS base stations to MBMS sessions running in the network. Furthermore, the mechanism is evaluated through several realistic scenarios and the results indicate the ability of the mechanism to utilize efficiently the radio resources and to ensure the service continuity when parallel MBMS services run in the network. Our approach is compared with current 3rd Generation Partnership Project (3GPP) approaches, such as these presented in TS 25.346 and in TR 25.922, in order to highlight the enhancements that it provides.},
keywords = {MBMS, Power Control, UMTS},
pubstate = {published},
tppubtype = {article}
}
In Universal Mobile Telecommunication System (UMTS), the downlink capacity is limited by the base station transmission power. Therefore, power control plays an important role to minimize the transmitted power shared among unicast and multicast users within a cell. In Multimedia Broadcast/Multicast Service (MBMS), power control targets to the efficient utilization of radio and network resources. However, the expected high demand for such services stresses the need for an efficient scheme, capable of dynamically allocating radio resources to parallel MBMS sessions. This paper proposes a power control mechanism for efficient MBMS session assignment in next generation UMTS networks. The mechanism shares efficiently the available power resources of UMTS base stations to MBMS sessions running in the network. Furthermore, the mechanism is evaluated through several realistic scenarios and the results indicate the ability of the mechanism to utilize efficiently the radio resources and to ensure the service continuity when parallel MBMS services run in the network. Our approach is compared with current 3rd Generation Partnership Project (3GPP) approaches, such as these presented in TS 25.346 and in TR 25.922, in order to highlight the enhancements that it provides.
Christos Bouras; Antonios Alexiou; Vasileios Kokkinos; Evangelos Rekkas
Cost Analysis and Efficient Radio Bearer Selection for Multicasting over UMTS Journal Article
In: Wireless Communications and Mobile Computing, Wiley InterScience, pp. 1159 - 1172, 2009.
Abstract | Links | BibTeX | Tags: Cost analysis, MBMS, Power Control, UMTS
@article{3084,
title = {Cost Analysis and Efficient Radio Bearer Selection for Multicasting over UMTS},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos and Evangelos Rekkas},
url = {https://telematics.upatras.gr/2561fulltext/},
year = {2009},
date = {2009-01-01},
urldate = {2009-01-01},
journal = {Wireless Communications and Mobile Computing, Wiley InterScience},
pages = {1159 - 1172},
abstract = {Along with the widespread deployment of the Third Generation (3G) cellular networks, the fast-improving capabilities of the mobile devices, content, and service providers are increasingly interested in supporting multicast communications over wireless networks and in particular over Universal Mobile Telecommunications System (UMTS). To this direction, the Third Generation Partnership Project (3GPP) is currently standardizing the Multimedia Broadcast/Multicast Service (MBMS) framework of UMTS. In this paper, we present an overview of the MBMS multicast mode of UMTS. We analytically present the multicast mode of the MBMS and analyze its performance in terms of packet delivery cost under various network topologies, cell types, and multicast users distributions. Furthermore, for the evaluation of the scheme, we consider different transport channels for the transmission of the multicast data over the UMTS Terrestrial Radio-Access Network (UTRAN) interfaces. Finally, we propose a scheme for the efficient radio bearer selection that minimizes total packet delivery cost.},
keywords = {Cost analysis, MBMS, Power Control, UMTS},
pubstate = {published},
tppubtype = {article}
}
Along with the widespread deployment of the Third Generation (3G) cellular networks, the fast-improving capabilities of the mobile devices, content, and service providers are increasingly interested in supporting multicast communications over wireless networks and in particular over Universal Mobile Telecommunications System (UMTS). To this direction, the Third Generation Partnership Project (3GPP) is currently standardizing the Multimedia Broadcast/Multicast Service (MBMS) framework of UMTS. In this paper, we present an overview of the MBMS multicast mode of UMTS. We analytically present the multicast mode of the MBMS and analyze its performance in terms of packet delivery cost under various network topologies, cell types, and multicast users distributions. Furthermore, for the evaluation of the scheme, we consider different transport channels for the transmission of the multicast data over the UMTS Terrestrial Radio-Access Network (UTRAN) interfaces. Finally, we propose a scheme for the efficient radio bearer selection that minimizes total packet delivery cost.
Christos Bouras; Antonios Alexiou; Andreas Papazois
A Study of Multicast Congestion Control for UMTS Journal Article
In: International Journal of Communication Systems, Wiley InterScience, pp. 739 - 754, 2009.
Abstract | Links | BibTeX | Tags: Congestion Control, MBMS, UMTS
@article{3087,
title = {A Study of Multicast Congestion Control for UMTS},
author = {Christos Bouras and Antonios Alexiou and Andreas Papazois},
url = {https://telematics.upatras.gr/9464ijcs/},
year = {2009},
date = {2009-01-01},
urldate = {2009-01-01},
journal = {International Journal of Communication Systems, Wiley InterScience},
pages = {739 - 754},
abstract = {In this paper, we study the applicability of multicast congestion control over universal mobile telecommunications system (UMTS) networks. We analyze two well-known multicast congestion control schemes for fixed networks, namely TCP-friendly multicast congestion control and pragmatic general multicast congestion control. We investigate their behavior when they are employed in UMTS networks and we analyze the problems arose when these mechanisms are applied over the wireless links of the UMTS terrestrial radio-access network. Additionally, we propose necessary improvements to these legacy schemes and explain the necessity of these modifications. The proposed schemes are implemented in the ns-2 network simulator and are evaluated under various network conditions and topologies. Finally, we measure the performance of the proposed modified schemes and compare them with the corresponding legacy mechanisms.},
keywords = {Congestion Control, MBMS, UMTS},
pubstate = {published},
tppubtype = {article}
}
In this paper, we study the applicability of multicast congestion control over universal mobile telecommunications system (UMTS) networks. We analyze two well-known multicast congestion control schemes for fixed networks, namely TCP-friendly multicast congestion control and pragmatic general multicast congestion control. We investigate their behavior when they are employed in UMTS networks and we analyze the problems arose when these mechanisms are applied over the wireless links of the UMTS terrestrial radio-access network. Additionally, we propose necessary improvements to these legacy schemes and explain the necessity of these modifications. The proposed schemes are implemented in the ns-2 network simulator and are evaluated under various network conditions and topologies. Finally, we measure the performance of the proposed modified schemes and compare them with the corresponding legacy mechanisms.
Christos Bouras; Antonios Alexiou; Dimitrios Antonellis
An Efficient Mechanism for Multicast Data Transmission in UMTS Journal Article
In: Wireless Personal Communications Journal, Spinger Verlang, Vol. 44, No. 4, pp. 455 - 471, 2008.
Abstract | Links | BibTeX | Tags: MBMS, UMTS
@article{3078,
title = {An Efficient Mechanism for Multicast Data Transmission in UMTS},
author = {Christos Bouras and Antonios Alexiou and Dimitrios Antonellis},
url = {https://telematics.upatras.gr/1361wpc/},
year = {2008},
date = {2008-01-01},
urldate = {2008-01-01},
journal = {Wireless Personal Communications Journal, Spinger Verlang, Vol. 44, No. 4},
pages = {455 - 471},
abstract = {In this paper, we present an efficient scheme for the multicast transmission of the data in the Universal Mobile Telecommunications System (UMTS). We take advantage of the tree topology of the examined network and we introduce the use of Routing Lists (RLs) in the nodes of the UMTS. The adoption of these lists leads to the decrement of the transmitted packets and to the efficient use of network resources in the multicast transmission of the data. We describe in detail the appropriate steps for the successful multicast transfer of data. Furthermore, we analyze the handling of special cases such as user mobility scenarios. Especially, the various handover types are examined along with the Serving Radio Network Subsystem relocation procedure. Finally, we implement our approach in the NS-2 simulator and we present the performance of the multicast mechanism.},
keywords = {MBMS, UMTS},
pubstate = {published},
tppubtype = {article}
}
In this paper, we present an efficient scheme for the multicast transmission of the data in the Universal Mobile Telecommunications System (UMTS). We take advantage of the tree topology of the examined network and we introduce the use of Routing Lists (RLs) in the nodes of the UMTS. The adoption of these lists leads to the decrement of the transmitted packets and to the efficient use of network resources in the multicast transmission of the data. We describe in detail the appropriate steps for the successful multicast transfer of data. Furthermore, we analyze the handling of special cases such as user mobility scenarios. Especially, the various handover types are examined along with the Serving Radio Network Subsystem relocation procedure. Finally, we implement our approach in the NS-2 simulator and we present the performance of the multicast mechanism.
Christos Bouras; Antonios Alexiou
Multicast in UMTS: Evaluation and Recommendations Journal Article
In: Wireless Communications and Mobile Computing, Wiley InterScience, Volume 8, Issue 4, pp. 463 - 481, 2008.
Abstract | Links | BibTeX | Tags: MBMS, UMTS
@article{3071,
title = {Multicast in UMTS: Evaluation and Recommendations},
author = {Christos Bouras and Antonios Alexiou},
url = {https://telematics.upatras.gr/9560fulltext/},
year = {2008},
date = {2008-01-01},
urldate = {2008-01-01},
journal = {Wireless Communications and Mobile Computing, Wiley InterScience, Volume 8, Issue 4},
pages = {463 - 481},
abstract = {It is known that multicasting is an efficient method of supporting group communication as it allows the transmission of packets to multiple destinations using fewer network resources. Along with the widespread deployment of the third generation cellular networks, the fast-improving capabilities of the mobile devices, content and service providers are increasingly interested in supporting multicast communications over wireless networks and in particular over Universal Mobile Telecommunications System (UMTS). Multicasting is a more efficient method of supporting group communication than unicasting or broadcasting, as it allows transmission and routing of packets to multiple destinations using fewer network resources. In this paper the three above mentioned methods of supporting group communication are analyzed in terms of their performance. The critical parameters of primary interest for the evaluation of any method are the packet delivery cost and the scalability of the method.},
keywords = {MBMS, UMTS},
pubstate = {published},
tppubtype = {article}
}
It is known that multicasting is an efficient method of supporting group communication as it allows the transmission of packets to multiple destinations using fewer network resources. Along with the widespread deployment of the third generation cellular networks, the fast-improving capabilities of the mobile devices, content and service providers are increasingly interested in supporting multicast communications over wireless networks and in particular over Universal Mobile Telecommunications System (UMTS). Multicasting is a more efficient method of supporting group communication than unicasting or broadcasting, as it allows transmission and routing of packets to multiple destinations using fewer network resources. In this paper the three above mentioned methods of supporting group communication are analyzed in terms of their performance. The critical parameters of primary interest for the evaluation of any method are the packet delivery cost and the scalability of the method.
Christos Bouras; Antonios Alexiou; Dimitrios Antonellis
Adaptive and Reliable Video Transmission over UMTS for Enhanced Performance Journal Article
In: International Journal of Communication Systems, Wiley InterScience Vol. 20, Issue 1, pp. 65 - 81, 2007.
Abstract | Links | BibTeX | Tags: Congestion Control, UMTS
@article{3070,
title = {Adaptive and Reliable Video Transmission over UMTS for Enhanced Performance},
author = {Christos Bouras and Antonios Alexiou and Dimitrios Antonellis},
url = {https://telematics.upatras.gr/4935ijcs1/},
year = {2007},
date = {2007-01-01},
urldate = {2007-01-01},
journal = {International Journal of Communication Systems, Wiley InterScience Vol. 20, Issue 1},
pages = {65 - 81},
abstract = {This paper proposes a mechanism for the congestion control for video transmission over universal mobile telecommunications system (UMTS). Our scheme is applied when the mobile user experiences real-time multimedia content and adopts the theory of a widely accepted rate control method in wired networks, namely equation-based rate control. In this approach, the transmission rate of the multimedia data is determined as a function of the packet loss rate, the round trip time and the packet size and the server explicitly adjusts its sending rate as a function of these parameters. Furthermore, we examine the performance of the UMTS for real-time video transmission using real-time protocols. Through a number of experiments, we measure performance parameters such as end-to-end delay, delay in radio access network, delay jitter and throughput in the wireless link.},
keywords = {Congestion Control, UMTS},
pubstate = {published},
tppubtype = {article}
}
This paper proposes a mechanism for the congestion control for video transmission over universal mobile telecommunications system (UMTS). Our scheme is applied when the mobile user experiences real-time multimedia content and adopts the theory of a widely accepted rate control method in wired networks, namely equation-based rate control. In this approach, the transmission rate of the multimedia data is determined as a function of the packet loss rate, the round trip time and the packet size and the server explicitly adjusts its sending rate as a function of these parameters. Furthermore, we examine the performance of the UMTS for real-time video transmission using real-time protocols. Through a number of experiments, we measure performance parameters such as end-to-end delay, delay in radio access network, delay jitter and throughput in the wireless link.
Christos Bouras; Antonios Alexiou; Vaggelis Igglesis
Scalable Rate Control for Video Transmission over UMTS Journal Article
In: International Journal of Communication Systems, Wiley InterScience, Vol. 20, Issue 12, pp. 1315 - 1131, 2007.
Abstract | Links | BibTeX | Tags: Congestion Control, UMTS
@article{3072,
title = {Scalable Rate Control for Video Transmission over UMTS},
author = {Christos Bouras and Antonios Alexiou and Vaggelis Igglesis},
url = {https://telematics.upatras.gr/2309fulltext/},
year = {2007},
date = {2007-01-01},
urldate = {2007-01-01},
journal = {International Journal of Communication Systems, Wiley InterScience, Vol. 20, Issue 12},
pages = {1315 - 1131},
abstract = {This paper proposes a mechanism for the congestion control for video transmission over Universal Mobile Telecommunications System (UMTS). Our scheme is applied when the mobile user experiences real time multimedia content and adopts the theory of a widely accepted rate control method in wired networks, namely equation-based rate control. In this approach, the transmission rate of the multimedia data is determined as a function of the packet loss rate, the round trip time and the packet size and the server explicitly adjusts its sending rate as a function of these parameters. Through a number of simulations and experiments we validate the correctness and measure the erformance and efficiency of the mechanism. A first level of evaluation is carried out using the ns-2 simulator. A second level then validates the proposed mechanism in real world traffic scenarios by performing experiments in a commercial UMTS network.},
keywords = {Congestion Control, UMTS},
pubstate = {published},
tppubtype = {article}
}
This paper proposes a mechanism for the congestion control for video transmission over Universal Mobile Telecommunications System (UMTS). Our scheme is applied when the mobile user experiences real time multimedia content and adopts the theory of a widely accepted rate control method in wired networks, namely equation-based rate control. In this approach, the transmission rate of the multimedia data is determined as a function of the packet loss rate, the round trip time and the packet size and the server explicitly adjusts its sending rate as a function of these parameters. Through a number of simulations and experiments we validate the correctness and measure the erformance and efficiency of the mechanism. A first level of evaluation is carried out using the ns-2 simulator. A second level then validates the proposed mechanism in real world traffic scenarios by performing experiments in a commercial UMTS network.
Christos Bouras; Antonios Alexiou; Dimitrios Antonellis
Adaptive Transmission of Multimedia Data over UMTS [Article in Encyclopedia] Journal Article
In: pp. 20 - 24, 2007.
@article{3158,
title = {Adaptive Transmission of Multimedia Data over UMTS [Article in Encyclopedia]},
author = {Christos Bouras and Antonios Alexiou and Dimitrios Antonellis},
url = {https://telematics.upatras.gr/1416458/},
year = {2007},
date = {2007-01-01},
urldate = {2007-01-01},
pages = {20 - 24},
keywords = {UMTS},
pubstate = {published},
tppubtype = {article}
}
Conferences
Christos Bouras; Antonios Alexiou; Vasileios Kokkinos
An Enhanced Mechanism for Efficient Assignment of Multiple sessions towards LTE Conference
The 12th ACM Annual Conference on Modeling, Analysis and Simulation of Wireless Mobile Systems, Tenerife, The Canary Islands, Spain, pp. 384-391, 2009.
Abstract | Links | BibTeX | Tags: LTE, MBMS, Power Control, UMTS
@conference{2958,
title = {An Enhanced Mechanism for Efficient Assignment of Multiple sessions towards LTE},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos},
url = {https://telematics.upatras.gr/1016mswim40a-alexiou/},
year = {2009},
date = {2009-10-01},
urldate = {2009-10-01},
booktitle = {The 12th ACM Annual Conference on Modeling, Analysis and Simulation of Wireless Mobile Systems, Tenerife, The Canary Islands, Spain, pp. 384-391},
pages = {384 - 391},
abstract = {The provision of rich multimedia services, such as Mobile TV, is considered of key importance for the Long Term Evolution (LTE) proliferation in mobile market. To this direction, Evolved - Multimedia Broadcast/Multicast Service (E-MBMS) that targets at the efficient delivery of multimedia data from a single source entity to multiple destinations, is envisaged to play an instrumental role during LTE standardization process. However, both LTE and E-MBMS performance are limited by the base station?s transmission power. As an aftermath, efficient power allocation techniques should be implemented so as to ensure the mass provision of multimedia applications to mobile users. This paper proposes a novel mechanism for efficient radio bearer selection during E-MBMS transmissions in LTE networks. The proposed mechanism is based on the concept of transport channels combination in any cell of the network. Most significantly, the mechanism exploits the performance enhancements emerged from Multiple Input Multiple Output (MIMO) antennas used in LTE networks and manages to efficiently deliver multiple E-MBMS sessions. The proposed mechanism is thoroughly evaluated and compared with several radio bearer selection mechanisms existing in bibliography.},
keywords = {LTE, MBMS, Power Control, UMTS},
pubstate = {published},
tppubtype = {conference}
}
The provision of rich multimedia services, such as Mobile TV, is considered of key importance for the Long Term Evolution (LTE) proliferation in mobile market. To this direction, Evolved - Multimedia Broadcast/Multicast Service (E-MBMS) that targets at the efficient delivery of multimedia data from a single source entity to multiple destinations, is envisaged to play an instrumental role during LTE standardization process. However, both LTE and E-MBMS performance are limited by the base station?s transmission power. As an aftermath, efficient power allocation techniques should be implemented so as to ensure the mass provision of multimedia applications to mobile users. This paper proposes a novel mechanism for efficient radio bearer selection during E-MBMS transmissions in LTE networks. The proposed mechanism is based on the concept of transport channels combination in any cell of the network. Most significantly, the mechanism exploits the performance enhancements emerged from Multiple Input Multiple Output (MIMO) antennas used in LTE networks and manages to efficiently deliver multiple E-MBMS sessions. The proposed mechanism is thoroughly evaluated and compared with several radio bearer selection mechanisms existing in bibliography.
Christos Bouras; Antonios Alexiou; Evangelos Rekkas
Optimizing MBMS Power Allocation Through HSDPA Transmissions Conference
The Fifth Advanced International Conference on Telecommunications - AICT 2009, Venice, Italy, pp. 327-332, 2009.
Abstract | Links | BibTeX | Tags: MBMS, Power Control, UMTS
@conference{2946,
title = {Optimizing MBMS Power Allocation Through HSDPA Transmissions},
author = {Christos Bouras and Antonios Alexiou and Evangelos Rekkas},
url = {https://telematics.upatras.gr/78073192pid822175/},
year = {2009},
date = {2009-05-01},
urldate = {2009-05-01},
booktitle = {The Fifth Advanced International Conference on Telecommunications - AICT 2009, Venice, Italy, pp. 327-332},
pages = {327 - 332},
abstract = {Long Term Evolution (LTE) promises the delivery of rich multimedia services in a more power and spectral efficient way than its predecessor Universal Mobile Telecommunication System (UMTS). To this direction, the newly introduced Enhanced - Multimedia Broadcast/Multicast Service (E-MBMS) framework is envisaged to play a fundamental role during the LTE standardization. E-MBMS constitutes the successor of MBMS which was introduced in the Release 6 of UMTS in order to deliver multimedia data from a single source entity to multiple destinations. This paper proposes a novel mechanism for efficient radio bearer selection during E-MBMS transmissions in LTE networks. The proposed mechanism is based on the concept of transport channels combination (point to-point and/or point-to-multipoint radio bearers) in any cell/sector of the network in which multicast users are residing. The mechanism is evaluated through several realistic scenarios and is compared with several radio bearer selection mechanisms in order to highlight the enhancements that it provides.},
keywords = {MBMS, Power Control, UMTS},
pubstate = {published},
tppubtype = {conference}
}
Long Term Evolution (LTE) promises the delivery of rich multimedia services in a more power and spectral efficient way than its predecessor Universal Mobile Telecommunication System (UMTS). To this direction, the newly introduced Enhanced - Multimedia Broadcast/Multicast Service (E-MBMS) framework is envisaged to play a fundamental role during the LTE standardization. E-MBMS constitutes the successor of MBMS which was introduced in the Release 6 of UMTS in order to deliver multimedia data from a single source entity to multiple destinations. This paper proposes a novel mechanism for efficient radio bearer selection during E-MBMS transmissions in LTE networks. The proposed mechanism is based on the concept of transport channels combination (point to-point and/or point-to-multipoint radio bearers) in any cell/sector of the network in which multicast users are residing. The mechanism is evaluated through several realistic scenarios and is compared with several radio bearer selection mechanisms in order to highlight the enhancements that it provides.
Christos Bouras; Antonios Alexiou; Vasileios Kokkinos
An Efficient Mechanism for Power Control Optimization in MBMS Enabled UTRAN Conference
IEEE Wireless Communications and Networking Conference, Budapest, Hungary, pp. 1292-1297, 2009.
Abstract | Links | BibTeX | Tags: MBMS, Power Control, UMTS
@conference{2940,
title = {An Efficient Mechanism for Power Control Optimization in MBMS Enabled UTRAN},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos},
url = {https://telematics.upatras.gr/9787wcnc2009/},
year = {2009},
date = {2009-04-01},
urldate = {2009-04-01},
booktitle = {IEEE Wireless Communications and Networking Conference, Budapest, Hungary, pp. 1292-1297},
pages = {1292 - 1297},
abstract = {This paper proposes a power control mechanism for the efficient radio bearer selection in the Multimedia Broadcast/Multicast Service (MBMS) framework of Universal
Mobile Telecommunications System (UMTS). The selection of the most efficient transport channel in terms of power consumption is a key point for MBMS enabled UMTS networks, since a wrong transport channel selection for the transmission of the MBMS data could result to a significant decrease in the total capacity of the network. Different UMTS transport channels and power saving techniques are examined and an algorithm that selects the most efficient combination of the above parameters is proposed. The proposed MBMS power control mechanism selects the transport channel that minimizes the base station?s transmission power in every cell of the network that serves multicast users.},
keywords = {MBMS, Power Control, UMTS},
pubstate = {published},
tppubtype = {conference}
}
This paper proposes a power control mechanism for the efficient radio bearer selection in the Multimedia Broadcast/Multicast Service (MBMS) framework of Universal
Mobile Telecommunications System (UMTS). The selection of the most efficient transport channel in terms of power consumption is a key point for MBMS enabled UMTS networks, since a wrong transport channel selection for the transmission of the MBMS data could result to a significant decrease in the total capacity of the network. Different UMTS transport channels and power saving techniques are examined and an algorithm that selects the most efficient combination of the above parameters is proposed. The proposed MBMS power control mechanism selects the transport channel that minimizes the base station?s transmission power in every cell of the network that serves multicast users.
Mobile Telecommunications System (UMTS). The selection of the most efficient transport channel in terms of power consumption is a key point for MBMS enabled UMTS networks, since a wrong transport channel selection for the transmission of the MBMS data could result to a significant decrease in the total capacity of the network. Different UMTS transport channels and power saving techniques are examined and an algorithm that selects the most efficient combination of the above parameters is proposed. The proposed MBMS power control mechanism selects the transport channel that minimizes the base station?s transmission power in every cell of the network that serves multicast users.
Christos Bouras; Antonios Alexiou; Vasileios Kokkinos; Evangelos Rekkas
Evaluation of Different Radio Bearer Selection Approaches for MBMS in B3G Networks Conference
IFIP Wireless Days Conference 2008, Dubai, United Arab Emirates, pp. 1-5, 2008.
Abstract | Links | BibTeX | Tags: MBMS, Power Control, UMTS
@conference{2937,
title = {Evaluation of Different Radio Bearer Selection Approaches for MBMS in B3G Networks},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos and Evangelos Rekkas},
url = {https://telematics.upatras.gr/8330ifip_ieee_wd2008_bouras/},
year = {2008},
date = {2008-11-01},
urldate = {2008-11-01},
booktitle = {IFIP Wireless Days Conference 2008, Dubai, United Arab Emirates, pp. 1-5},
pages = {1 - 5},
abstract = {The spread of multimedia data has drastically differentiated the current landscape of Universal Mobile Telecommunication System (UMTS) networks, posing the need for further enhancements in its Radio Resource Management (RRM) strategies. Introduced in 3rd Generation Partnership Project (3GPP) Release 6, the Multimedia Broadcast/Multicast Services (MBMS) framework aims at the efficient usage of network and radio resources for the transmission of multimedia services. The main requirement during the provision of MBMS multicast services is to minimize the transmission power of UMTS base stations. To this direction, several mechanisms have been proposed that either allow a simultaneous deployment of Point-to-Point (PTP) and Point-to-Multipoint (PTM) transmissions, or a single transport channel deployment (PTP or PTM) in a cell at any given time. Main objective of this paper is to study these mechanisms, compare them in terms of power consumption, underline the advantages that they may offer; and finally to propose enhancements that will ensure the lowest possible power consumption during MBMS transmissions.},
keywords = {MBMS, Power Control, UMTS},
pubstate = {published},
tppubtype = {conference}
}
The spread of multimedia data has drastically differentiated the current landscape of Universal Mobile Telecommunication System (UMTS) networks, posing the need for further enhancements in its Radio Resource Management (RRM) strategies. Introduced in 3rd Generation Partnership Project (3GPP) Release 6, the Multimedia Broadcast/Multicast Services (MBMS) framework aims at the efficient usage of network and radio resources for the transmission of multimedia services. The main requirement during the provision of MBMS multicast services is to minimize the transmission power of UMTS base stations. To this direction, several mechanisms have been proposed that either allow a simultaneous deployment of Point-to-Point (PTP) and Point-to-Multipoint (PTM) transmissions, or a single transport channel deployment (PTP or PTM) in a cell at any given time. Main objective of this paper is to study these mechanisms, compare them in terms of power consumption, underline the advantages that they may offer; and finally to propose enhancements that will ensure the lowest possible power consumption during MBMS transmissions.
Christos Bouras; Antonios Alexiou; Vasileios Kokkinos; Evangelos Rekkas
A Novel Mechanism for Radio Capacity Maximization during MBMS transmission in B3G Networks Conference
The 11th ACM/IEEE International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWiM 2008), Vancouver, British Columbia, Canada, pp. 185-192, 2008.
Abstract | Links | BibTeX | Tags: MBMS, Power Control, UMTS
@conference{2934,
title = {A Novel Mechanism for Radio Capacity Maximization during MBMS transmission in B3G Networks},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos and Evangelos Rekkas},
url = {https://telematics.upatras.gr/6332mswim2008_bouras/},
year = {2008},
date = {2008-10-01},
urldate = {2008-10-01},
booktitle = {The 11th ACM/IEEE International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWiM 2008), Vancouver, British Columbia, Canada, pp. 185-192},
pages = {185 - 192},
abstract = {This paper proposes a novel mechanism for efficient power control during multicast transmissions in Beyond 3rd Generation (B3G) mobile networks. The mechanism utilizes optimally the available power resources of Universal Mobile Telecommunication System (UMTS) base stations, resulting to network capacity maximization. The proposed mechanism is based on the concept of transport channels combination (point-topoint and/or point-to-multipoint radio bearers) in any cell/sector of the network in which Multimedia Broadcast/Multicast Service (MBMS) users are residing. In particular, the transport channel combination that minimizes the transmission power of the base station is selected for the transmission of the MBMS traffic to the corresponding cell. The mechanism is evaluated through several realistic scenarios and the results indicate the ability of the mechanism to utilize optimally the radio resources of the network. Furthermore, our approach is compared with several power
control mechanisms existing in the bibliography, including the 3rd Generation Partnership Project (3GPP) approaches (presented in 3GPP TS 25.346 and 3GPP TR 25.922), in order to highlight the
enhancements that it provides.},
keywords = {MBMS, Power Control, UMTS},
pubstate = {published},
tppubtype = {conference}
}
This paper proposes a novel mechanism for efficient power control during multicast transmissions in Beyond 3rd Generation (B3G) mobile networks. The mechanism utilizes optimally the available power resources of Universal Mobile Telecommunication System (UMTS) base stations, resulting to network capacity maximization. The proposed mechanism is based on the concept of transport channels combination (point-topoint and/or point-to-multipoint radio bearers) in any cell/sector of the network in which Multimedia Broadcast/Multicast Service (MBMS) users are residing. In particular, the transport channel combination that minimizes the transmission power of the base station is selected for the transmission of the MBMS traffic to the corresponding cell. The mechanism is evaluated through several realistic scenarios and the results indicate the ability of the mechanism to utilize optimally the radio resources of the network. Furthermore, our approach is compared with several power
control mechanisms existing in the bibliography, including the 3rd Generation Partnership Project (3GPP) approaches (presented in 3GPP TS 25.346 and 3GPP TR 25.922), in order to highlight the
enhancements that it provides.
control mechanisms existing in the bibliography, including the 3rd Generation Partnership Project (3GPP) approaches (presented in 3GPP TS 25.346 and 3GPP TR 25.922), in order to highlight the
enhancements that it provides.
Christos Bouras; Antonios Alexiou; Vasileios Kokkinos
Balancing between Power Optimization and Iub Efficiency in MBMS enabled UMTS Networks Conference
1st IFIP Wireless and Mobile Networking Conference (WMNC 2008) , Toulouse, France, pp. 355-368, 2008.
Abstract | Links | BibTeX | Tags: MBMS, Power Control, UMTS
@conference{2931,
title = {Balancing between Power Optimization and Iub Efficiency in MBMS enabled UMTS Networks},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos},
url = {https://telematics.upatras.gr/6573pwc2008_bouras/},
year = {2008},
date = {2008-10-01},
urldate = {2008-10-01},
booktitle = {1st IFIP Wireless and Mobile Networking Conference (WMNC 2008) , Toulouse, France, pp. 355-368},
pages = {355 - 368},
abstract = {Multicast transmission is one of the major goals for Universal Mobile Telecommunication System (UMTS) that motivated the 3rd Generation Partnership Project (3GPP) to launch the Multimedia Broadcast/Multicast Service (MBMS) framework. MBMS constitutes a significant step towards the so-called Mobile Broadband, since it allows the efficient utilization of network and radio resources. One of most important problems that MBMS is currently facing is the assignment of the appropriate transport channel for the transmission of MBMS data. This paper proposes an alternative solution to this problem, by introducing a cost-based scheme for the efficient radio bearer selection that minimizes the overall delivery cost. Our approach, calculates the telecommunication cost over the most crucial interfaces of UMTS; and based on this cost selects the appropriate radio bearer.},
keywords = {MBMS, Power Control, UMTS},
pubstate = {published},
tppubtype = {conference}
}
Multicast transmission is one of the major goals for Universal Mobile Telecommunication System (UMTS) that motivated the 3rd Generation Partnership Project (3GPP) to launch the Multimedia Broadcast/Multicast Service (MBMS) framework. MBMS constitutes a significant step towards the so-called Mobile Broadband, since it allows the efficient utilization of network and radio resources. One of most important problems that MBMS is currently facing is the assignment of the appropriate transport channel for the transmission of MBMS data. This paper proposes an alternative solution to this problem, by introducing a cost-based scheme for the efficient radio bearer selection that minimizes the overall delivery cost. Our approach, calculates the telecommunication cost over the most crucial interfaces of UMTS; and based on this cost selects the appropriate radio bearer.
Christos Bouras; Antonios Alexiou; Evangelos Rekkas
A Novel Power Counting Mechanism for Enhanced MBMS Performance in UMTS Networks Conference
1st IFIP Wireless and Mobile Networking Conference (WMNC 2008) , Toulouse, France, pp. 57-68, 2008.
Abstract | Links | BibTeX | Tags: MBMS, Power Control, UMTS
@conference{2930,
title = {A Novel Power Counting Mechanism for Enhanced MBMS Performance in UMTS Networks},
author = {Christos Bouras and Antonios Alexiou and Evangelos Rekkas},
url = {https://telematics.upatras.gr/1110mwcn2008_bouras/},
year = {2008},
date = {2008-09-01},
urldate = {2008-09-01},
booktitle = {1st IFIP Wireless and Mobile Networking Conference (WMNC 2008) , Toulouse, France, pp. 57-68},
pages = {57 - 68},
abstract = {One of the key objectives of Universal Mobile Telecommunications System (UMTS) is the realization of enhanced end-user experience through the provision of rich multimedia services, ensuring in parallel an economical delivery cost for service providers. Multimedia Broadcast/Multicast Services (MBMS) framework of UMTS epitomizes the increasing popularity of such applications by efficiently delivering multimedia traffic to a large number of users and optimizing the radio interface of UMTS networks. For exploiting resource efficiency, MBMS specifications consider the Counting Mechanism which decides whether it is more economic to deliver MBMS multicast traffic over point-to-point (PTP) or point-to-multipoint (PTM) bearers. However, the necessity to further improve MBMS resource efficiency and integrate new technologies such as High Speed Downlink Packet Access (HSDPA) stresses the need for an advanced Counting Mechanism. To this direction, in this paper we propose a novel Power Counting Mechanism which performs optimal power resource utilization and incorporates the HSDPA broadband extension of UMTS for enhanced performance.},
keywords = {MBMS, Power Control, UMTS},
pubstate = {published},
tppubtype = {conference}
}
One of the key objectives of Universal Mobile Telecommunications System (UMTS) is the realization of enhanced end-user experience through the provision of rich multimedia services, ensuring in parallel an economical delivery cost for service providers. Multimedia Broadcast/Multicast Services (MBMS) framework of UMTS epitomizes the increasing popularity of such applications by efficiently delivering multimedia traffic to a large number of users and optimizing the radio interface of UMTS networks. For exploiting resource efficiency, MBMS specifications consider the Counting Mechanism which decides whether it is more economic to deliver MBMS multicast traffic over point-to-point (PTP) or point-to-multipoint (PTM) bearers. However, the necessity to further improve MBMS resource efficiency and integrate new technologies such as High Speed Downlink Packet Access (HSDPA) stresses the need for an advanced Counting Mechanism. To this direction, in this paper we propose a novel Power Counting Mechanism which performs optimal power resource utilization and incorporates the HSDPA broadband extension of UMTS for enhanced performance.
Christos Bouras; Antonios Alexiou; Vasileios Kokkinos; Evangelos Rekkas
Efficient Assignment of Multiple MBMS Sessions in B3G Networks Conference
2008 IEEE 68th Vehicular Technology Conference – VTC2008 Fall, Calgary, Canada, pp. 1-5, 2008.
Abstract | Links | BibTeX | Tags: MBMS, Power Control, UMTS
@conference{2928,
title = {Efficient Assignment of Multiple MBMS Sessions in B3G Networks},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos and Evangelos Rekkas},
url = {https://telematics.upatras.gr/6968vtc2008_bouras/},
year = {2008},
date = {2008-09-01},
urldate = {2008-09-01},
booktitle = {2008 IEEE 68th Vehicular Technology Conference – VTC2008 Fall, Calgary, Canada, pp. 1-5},
pages = {1 - 5},
abstract = {In Universal Mobile Telecommunication System (UMTS), the downlink capacity is limited by the base station transmission power. Therefore, power control plays an important role to minimize the transmitted power shared among unicast and multicast users within a cell. In Multimedia Broadcast/Multicast Service (MBMS), power control targets to the efficient utilization of radio and network resources. However, the expected high demand for such services stresses the need for an efficient scheme, capable of dynamically allocating radio resources to parallel MBMS sessions. This paper proposes a power control mechanism for efficient MBMS session assignment in next generation UMTS networks. The mechanism shares efficiently the available power resources of UMTS base stations to MBMS sessions running in the network. Furthermore, the mechanism is evaluated through several realistic scenarios and the results indicate the ability of the mechanism to utilize efficiently the radio resources and to ensure the service continuity when parallel MBMS services running in the network.},
keywords = {MBMS, Power Control, UMTS},
pubstate = {published},
tppubtype = {conference}
}
In Universal Mobile Telecommunication System (UMTS), the downlink capacity is limited by the base station transmission power. Therefore, power control plays an important role to minimize the transmitted power shared among unicast and multicast users within a cell. In Multimedia Broadcast/Multicast Service (MBMS), power control targets to the efficient utilization of radio and network resources. However, the expected high demand for such services stresses the need for an efficient scheme, capable of dynamically allocating radio resources to parallel MBMS sessions. This paper proposes a power control mechanism for efficient MBMS session assignment in next generation UMTS networks. The mechanism shares efficiently the available power resources of UMTS base stations to MBMS sessions running in the network. Furthermore, the mechanism is evaluated through several realistic scenarios and the results indicate the ability of the mechanism to utilize efficiently the radio resources and to ensure the service continuity when parallel MBMS services running in the network.
Christos Bouras; Antonios Alexiou; Vasileios Kokkinos
Power Saving Methods for MBMS Transmissions in UTRAN Conference
The Thirteenth IEEE Symposium on Computers and Communications – ISCC 2008, Marrakech, Morocco, pp. 374-379, 2008.
Abstract | Links | BibTeX | Tags: MBMS, Power Control, UMTS
@conference{2922,
title = {Power Saving Methods for MBMS Transmissions in UTRAN},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos},
url = {https://telematics.upatras.gr/7228iscc2008_bouras/},
year = {2008},
date = {2008-07-01},
urldate = {2008-07-01},
booktitle = {The Thirteenth IEEE Symposium on Computers and Communications – ISCC 2008, Marrakech, Morocco, pp. 374-379},
pages = {374 - 379},
abstract = {The demand for wireless multimedia communications thrives in today?s consumer and corporate market. The need to evolve multimedia applications and services is at a critical point given the proliferation and integration of wireless systems. Multimedia Broadcast Multicast Services (MBMS) was introduced in Third Generation Partnership Project (3GPP) Release 6 in order to more efficiently use network and radio resources for the transmission of multimedia data, both in the core network and most importantly in the air interface of UTRAN (UMTS Terrestrial Radio Access Network). However, several obstacles, regarding the high power requirements, should be overcome for the realization of MBMS. The fact that Node B?s transmission power is a limited resource and must be shared among all MBMS users in a cell indicates the need for power control during MBMS transmissions. Several techniques, such as Dynamic Power Setting and Macro Diversity Combining, have been proposed in order to reduce the power requirements of delivering multicast traffic to MBMS users. This paper examines the efficiency of the utilization of these power saving techniques, by presenting simulation results that will reveal the amount of power that is saved.},
keywords = {MBMS, Power Control, UMTS},
pubstate = {published},
tppubtype = {conference}
}
The demand for wireless multimedia communications thrives in today?s consumer and corporate market. The need to evolve multimedia applications and services is at a critical point given the proliferation and integration of wireless systems. Multimedia Broadcast Multicast Services (MBMS) was introduced in Third Generation Partnership Project (3GPP) Release 6 in order to more efficiently use network and radio resources for the transmission of multimedia data, both in the core network and most importantly in the air interface of UTRAN (UMTS Terrestrial Radio Access Network). However, several obstacles, regarding the high power requirements, should be overcome for the realization of MBMS. The fact that Node B?s transmission power is a limited resource and must be shared among all MBMS users in a cell indicates the need for power control during MBMS transmissions. Several techniques, such as Dynamic Power Setting and Macro Diversity Combining, have been proposed in order to reduce the power requirements of delivering multicast traffic to MBMS users. This paper examines the efficiency of the utilization of these power saving techniques, by presenting simulation results that will reveal the amount of power that is saved.
Christos Bouras; Antonios Alexiou; Evangelos Rekkas
Efficient Delivery of MBMS Multicast Traffic over HSDPA Conference
Third Workshop on multimedia Applications over Wireless Networks (MediaWiN 2008), Marrakech, Morocco, pp. 50-55, 2008.
Abstract | Links | BibTeX | Tags: MBMS, UMTS
@conference{2923,
title = {Efficient Delivery of MBMS Multicast Traffic over HSDPA},
author = {Christos Bouras and Antonios Alexiou and Evangelos Rekkas},
url = {https://telematics.upatras.gr/9119mediawin2008_bouras/},
year = {2008},
date = {2008-07-01},
urldate = {2008-07-01},
booktitle = {Third Workshop on multimedia Applications over Wireless Networks (MediaWiN 2008), Marrakech, Morocco, pp. 50-55},
pages = {50 - 55},
abstract = {Multimedia Broadcast/Multicast Service (MBMS) and High-Speed Downlink Packet Access (HSDPA) are two key technologies that constitute a significant step towards the Mobile Broadband. MBMS was introduced by the third Generation Partnership Project (3GPP) in order to support broadcast and multicast communication over wireless networks and in particular over Universal Mobile Telecommunications System (UMTS). Concurrently, HSDPA aims to ensure the transmission of high peak data rates and increase system capacity. In this paper we evaluate the performance of MBMS multicast transmission over the premier transport channel used in HSDPA, named High Speed-Downlink Shared Channel (HS-DSCH). Due to the fact that downlink transmission power is the scarcest resource in UMTS networks, the evaluation is performed through an analytical dimensioning of the MBMS downlink transmission power. Furthermore, the impacts of power allocation on MBMS capacity are investigated.},
keywords = {MBMS, UMTS},
pubstate = {published},
tppubtype = {conference}
}
Multimedia Broadcast/Multicast Service (MBMS) and High-Speed Downlink Packet Access (HSDPA) are two key technologies that constitute a significant step towards the Mobile Broadband. MBMS was introduced by the third Generation Partnership Project (3GPP) in order to support broadcast and multicast communication over wireless networks and in particular over Universal Mobile Telecommunications System (UMTS). Concurrently, HSDPA aims to ensure the transmission of high peak data rates and increase system capacity. In this paper we evaluate the performance of MBMS multicast transmission over the premier transport channel used in HSDPA, named High Speed-Downlink Shared Channel (HS-DSCH). Due to the fact that downlink transmission power is the scarcest resource in UMTS networks, the evaluation is performed through an analytical dimensioning of the MBMS downlink transmission power. Furthermore, the impacts of power allocation on MBMS capacity are investigated.