Christos Bouras
Short CV: Christos Bouras is Professor in the University of Patras, Department of Computer Engineering and Informatics. Also he is a scientific advisor of Research Unit 6 in Computer Technology Institute and Press – Diophantus, Patras, Greece. His research interests include Analysis of Performance of Networking and Computer Systems, Computer Networks and Protocols, Mobile and Wireless Communications, Telematics and New Services, QoS and Pricing for Networks and Services, e-learning, Networked Virtual Environments and WWW Issues. He has extended professional experience in Design and Analysis of Networks, Protocols, Telematics and New Services. He has published more than 450 papers in various well-known refereed books, conferences and journals. He is a co-author of 9 books in Greek and editor of 2 in English. He has been member of editorial board for international journals and PC member and referee in various international journals and conferences. He has participated in R&D projects.
Journal Articles
Bouras, Christos; Papazois, Andreas; Kokkinos, Vasileios; Kanakis, Nikos
Embracing RaptorQ FEC in 3GPP multicast services Journal Article
In: Wireless Networks, Springer Verlang, pp. 1023-1035, vol. 19, pp. 1023-1035, 2013.
Abstract | Links | BibTeX | Tags: FEC, MBMS
@article{3119,
title = {Embracing RaptorQ FEC in 3GPP multicast services},
author = {Christos Bouras and Andreas Papazois and Vasileios Kokkinos and Nikos Kanakis},
url = {https://telematics.upatras.gr/331510-1007_s11276-012-0515-3/},
year = {2013},
date = {2013-01-01},
urldate = {2013-01-01},
journal = {Wireless Networks, Springer Verlang, pp. 1023-1035},
volume = {19},
pages = {1023-1035},
abstract = {Multimedia Broadcast/Multicast Services (MBMS) have been introduced by Third Generation Partnership Project (3GPP) aiming to efficiently deliver data to mobile users in a one-to-many way. In order to provide reliable multicast transmission, 3GPP recommends exclusively for MBMS the use of a Forward Error Correction (FEC) mechanism on the application layer. Raptor codes are standardized as the Application Layer FEC (AL-FEC) scheme over 3GPP MBMS. However, the 3GPP standardized systematic fountain Raptor code is nowadays considered obsolete, since a new variation of the Raptor codes has emerged. This enhanced AL-FEC scheme, named RaptorQ, promises higher protection efficiency and superior flexibility on the provision of demanding mobile multicast services. In this work, we provide an extensive performance evaluation presenting at first a theoretical performance comparison of the newly introduced RaptorQ FEC scheme with its predecessor Raptor code, examining the enhancements that RaptorQ introduces on the AL-FEC protection robustness. Thereafter, to verify the enhanced performance of RaptorQ, we present several simulation results considering the modeling of the AL-FEC protection over multicast services for next generation mobile networks, utilizing the ns-3 simulation environment. Investigating several mobile system parameters in conjunction with FEC encoding parameters, we provide valuable results regarding the impacts of the examined AL-FEC schemes application on the multicast services performance.},
keywords = {FEC, MBMS},
pubstate = {published},
tppubtype = {article}
}
Multimedia Broadcast/Multicast Services (MBMS) have been introduced by Third Generation Partnership Project (3GPP) aiming to efficiently deliver data to mobile users in a one-to-many way. In order to provide reliable multicast transmission, 3GPP recommends exclusively for MBMS the use of a Forward Error Correction (FEC) mechanism on the application layer. Raptor codes are standardized as the Application Layer FEC (AL-FEC) scheme over 3GPP MBMS. However, the 3GPP standardized systematic fountain Raptor code is nowadays considered obsolete, since a new variation of the Raptor codes has emerged. This enhanced AL-FEC scheme, named RaptorQ, promises higher protection efficiency and superior flexibility on the provision of demanding mobile multicast services. In this work, we provide an extensive performance evaluation presenting at first a theoretical performance comparison of the newly introduced RaptorQ FEC scheme with its predecessor Raptor code, examining the enhancements that RaptorQ introduces on the AL-FEC protection robustness. Thereafter, to verify the enhanced performance of RaptorQ, we present several simulation results considering the modeling of the AL-FEC protection over multicast services for next generation mobile networks, utilizing the ns-3 simulation environment. Investigating several mobile system parameters in conjunction with FEC encoding parameters, we provide valuable results regarding the impacts of the examined AL-FEC schemes application on the multicast services performance.
Bouras, Christos; Papazois, Andreas; Kokkinos, Vasileios; Kanakis, Nikos
Application Layer Forward Error Correction for Multicast Streaming over LTE Networks Journal Article
In: International Journal of Communication Systems, Wiley InterScience, pp. 1459-1574, vol. 26, pp. 1459-1574, 2013.
Abstract | Links | BibTeX | Tags: FEC, LTE, MBMS
@article{3113,
title = {Application Layer Forward Error Correction for Multicast Streaming over LTE Networks},
author = {Christos Bouras and Andreas Papazois and Vasileios Kokkinos and Nikos Kanakis},
url = {https://telematics.upatras.gr/3846dac2321/},
year = {2013},
date = {2013-01-01},
urldate = {2013-01-01},
journal = {International Journal of Communication Systems, Wiley InterScience, pp. 1459-1574},
volume = {26},
pages = {1459-1574},
abstract = {The next step beyond third generation (3G) mobile networks is the Third Generation Partnership Project (3GPP) standard, named Long Term Evolution (LTE). A key feature of LTE is the enhancement of Multimedia Broadcast/Multicast Services (MBMS), where the same content is transmitted to multiple users located in a specific service area. To support efficient download and streaming delivery, 3GPP included an application layer Forward Error Correction (AL-FEC) technique based on the systematic fountain Raptor code, in the MBMS standard. In order to achieve protection against packet losses, Raptor codes introduce redundant packets to the transmission, i.e., the FEC overhead. In this work, we investigate the application of AL-FEC over MBMS streaming services. We consider the benefits of AL-FEC for a continuous multimedia stream transmission to multiple users and we examine how the amount of FEC redundancy can be adjusted under different packet loss conditions. For this purpose, we present a variety of realistic simulation scenarios for the application of AL-FEC and furthermore we provide an in-depth analysis of Raptor codes performance introducing valuable suggestions to achieve efficient use of Raptor codes.},
keywords = {FEC, LTE, MBMS},
pubstate = {published},
tppubtype = {article}
}
The next step beyond third generation (3G) mobile networks is the Third Generation Partnership Project (3GPP) standard, named Long Term Evolution (LTE). A key feature of LTE is the enhancement of Multimedia Broadcast/Multicast Services (MBMS), where the same content is transmitted to multiple users located in a specific service area. To support efficient download and streaming delivery, 3GPP included an application layer Forward Error Correction (AL-FEC) technique based on the systematic fountain Raptor code, in the MBMS standard. In order to achieve protection against packet losses, Raptor codes introduce redundant packets to the transmission, i.e., the FEC overhead. In this work, we investigate the application of AL-FEC over MBMS streaming services. We consider the benefits of AL-FEC for a continuous multimedia stream transmission to multiple users and we examine how the amount of FEC redundancy can be adjusted under different packet loss conditions. For this purpose, we present a variety of realistic simulation scenarios for the application of AL-FEC and furthermore we provide an in-depth analysis of Raptor codes performance introducing valuable suggestions to achieve efficient use of Raptor codes.
Bouras, Christos; Alexiou, Antonios; Papazois, Andreas
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.
Bouras, Christos; Alexiou, Antonios; Kokkinos, Vasileios; Rekkas, Evangelos
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.
Bouras, Christos; Alexiou, Antonios; Papazois, Andreas
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.
Bouras, Christos; Alexiou, Antonios; Rekkas, Evangelos
An Improved MBMS Power Counting Mechanism towards Long Term Evolution Journal Article
In: Telecommunication Systems Journal, Springer Verlang, pp. 109-119, vol. 43, pp. 109 - 119, 2010.
Abstract | Links | BibTeX | Tags: LTE, MBMS, Power Control
@article{3089,
title = {An Improved MBMS Power Counting Mechanism towards Long Term Evolution},
author = {Christos Bouras and Antonios Alexiou and Evangelos Rekkas},
url = {https://telematics.upatras.gr/6676telsys/},
year = {2010},
date = {2010-01-01},
urldate = {2010-01-01},
journal = {Telecommunication Systems Journal, Springer Verlang, pp. 109-119},
volume = {43},
pages = {109 - 119},
abstract = {One of the key objectives of beyond 3rd generation mobile networks is the realization of enhanced end-user experience through the provision of rich multimedia services. Multimedia Broadcast/Multicast Services (MBMS) framework epitomizes the increasing popularity of such applications and is envisaged to play an instrumental role for the Long Term Evolution (LTE) proliferation in mobile market. For exploiting resource efficiency, MBMS specifications consider the Counting Mechanism which decides whether it is more efficient 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 in the frame of LTE stresses the need for an advanced Counting Mechanism. In this work we propose a novel Power Counting Mechanism for efficient selection of MBMS bearers. The proposed mechanism optimally utilizes power resources and exploits broadband characteristics and performance enhancements emerged from Multiple Input Multiple Output (MIMO) antennas used in LTE networks.},
keywords = {LTE, MBMS, Power Control},
pubstate = {published},
tppubtype = {article}
}
One of the key objectives of beyond 3rd generation mobile networks is the realization of enhanced end-user experience through the provision of rich multimedia services. Multimedia Broadcast/Multicast Services (MBMS) framework epitomizes the increasing popularity of such applications and is envisaged to play an instrumental role for the Long Term Evolution (LTE) proliferation in mobile market. For exploiting resource efficiency, MBMS specifications consider the Counting Mechanism which decides whether it is more efficient 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 in the frame of LTE stresses the need for an advanced Counting Mechanism. In this work we propose a novel Power Counting Mechanism for efficient selection of MBMS bearers. The proposed mechanism optimally utilizes power resources and exploits broadband characteristics and performance enhancements emerged from Multiple Input Multiple Output (MIMO) antennas used in LTE networks.
Bouras, Christos; Alexiou, Antonios; Papazois, Andreas
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.
Bouras, Christos; Alexiou, Antonios; Kokkinos, Vasileios; Rekkas, Evangelos
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.
Bouras, Christos; Alexiou, Antonios; Kokkinos, Vasileios
Evaluation of Different Power Saving Techniques for MBMS Services Journal Article
In: EURASIP Journal on Wireless Communications and Networking, Hindawi Publishing Corporation, pp. 1 - 15, 2009.
Abstract | Links | BibTeX | Tags: LTE, MBMS, Power Control
@article{3091,
title = {Evaluation of Different Power Saving Techniques for MBMS Services},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos},
url = {https://telematics.upatras.gr/1516785927/},
year = {2009},
date = {2009-01-01},
urldate = {2009-01-01},
journal = {EURASIP Journal on Wireless Communications and Networking, Hindawi Publishing Corporation},
pages = {1 - 15},
abstract = {Over the last years we have witnessed an explosive growth of multimedia computing, wireless communication and applications. Following the rapid increase in penetration rate of broadband services, the Third Generation Partnership Project (3GPP) is currently standardizing the Evolved-Multimedia Broadcast/Multicast Service (E-MBMS) framework of Long Term Evolution (LTE), the successor ofUniversalMobile Telecommunications System (UMTS).MBMS constitutes a point-to-multipoint downlink bearer service that was designed to significantly decrease the required radio and wired link resources. However, several obstacles regarding the high-power requirements should be overcome for the realization of MBMS. Techniques, such as Macrodiversity Combining and Rate Splitting, could be utilized to reduce the power requirement of delivering multicast traffic toMBMS users. In this paper, we analytically present several power saving techniques and analyze their performance in terms of power consumption. We provide simulation results that reveal the amount of power that is saved and reinforce the need for the usage of such techniques.},
keywords = {LTE, MBMS, Power Control},
pubstate = {published},
tppubtype = {article}
}
Over the last years we have witnessed an explosive growth of multimedia computing, wireless communication and applications. Following the rapid increase in penetration rate of broadband services, the Third Generation Partnership Project (3GPP) is currently standardizing the Evolved-Multimedia Broadcast/Multicast Service (E-MBMS) framework of Long Term Evolution (LTE), the successor ofUniversalMobile Telecommunications System (UMTS).MBMS constitutes a point-to-multipoint downlink bearer service that was designed to significantly decrease the required radio and wired link resources. However, several obstacles regarding the high-power requirements should be overcome for the realization of MBMS. Techniques, such as Macrodiversity Combining and Rate Splitting, could be utilized to reduce the power requirement of delivering multicast traffic toMBMS users. In this paper, we analytically present several power saving techniques and analyze their performance in terms of power consumption. We provide simulation results that reveal the amount of power that is saved and reinforce the need for the usage of such techniques.
Bouras, Christos; Alexiou, Antonios; Antonellis, Dimitrios
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.
Bouras, Christos; Alexiou, Antonios
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.
Conferences
Bouras, Christos; Papazois, Andreas; Kokkinos, Vasileios; Asimakis, Konstantinos
Genetic Optimization for Spectral Efficient Multicasting in LTE Systems Conference
Fifth IFIP Wireless and Mobile Networking Conference, Bratislava, Slovakia, pp. 54-59, 2012.
Abstract | Links | BibTeX | Tags: LTE, MBMS, MBSFN
@conference{3010,
title = {Genetic Optimization for Spectral Efficient Multicasting in LTE Systems},
author = {Christos Bouras and Andreas Papazois and Vasileios Kokkinos and Konstantinos Asimakis},
url = {https://telematics.upatras.gr/wp-content/uploads/2024/01/Proceedings_WMNC_2012.pdf},
year = {2012},
date = {2012-09-01},
urldate = {2012-09-01},
booktitle = {Fifth IFIP Wireless and Mobile Networking Conference, Bratislava, Slovakia, pp. 54-59},
pages = {54-59},
abstract = {Past research has proposed the usage of assisting cells with Multimedia Broadcast/Multicast Service (MBMS) over a Single Frequency Network (MBSFN) to increase the Spectral Efficiency (SE) of LTE. In this paper we propose and investigate a method for optimizing the power consumption of the network while retaining an acceptable SE for most users. We design an algorithm that makes use of genetic optimization and analytical estimation of the SE. The algorithm is implemented in a novel simulation tool that allows experimentation over various user distributions and LTE deployments similar to the real-world ones. This simulation tool estimates the SE of each user and is able to optimize the network deployment by adjusting the individual transmission power levels for each cell.},
keywords = {LTE, MBMS, MBSFN},
pubstate = {published},
tppubtype = {conference}
}
Past research has proposed the usage of assisting cells with Multimedia Broadcast/Multicast Service (MBMS) over a Single Frequency Network (MBSFN) to increase the Spectral Efficiency (SE) of LTE. In this paper we propose and investigate a method for optimizing the power consumption of the network while retaining an acceptable SE for most users. We design an algorithm that makes use of genetic optimization and analytical estimation of the SE. The algorithm is implemented in a novel simulation tool that allows experimentation over various user distributions and LTE deployments similar to the real-world ones. This simulation tool estimates the SE of each user and is able to optimize the network deployment by adjusting the individual transmission power levels for each cell.
Bouras, Christos; Papazois, Andreas; Kokkinos, Vasileios; Kanakis, Nikos
Evaluating RaptorQ FEC over 3GPP Multicast Services Conference
The 8th International Wireless Communications & Mobile Computing Conference (IWCMC 2012), Limassol, Cyprus, pp. 257-262, 2012.
Abstract | Links | BibTeX | Tags: FEC, LTE, MBMS
@conference{2999,
title = {Evaluating RaptorQ FEC over 3GPP Multicast Services},
author = {Christos Bouras and Andreas Papazois and Vasileios Kokkinos and Nikos Kanakis},
url = {https://telematics.upatras.gr/wp-content/uploads/2024/01/4189046_7137.pdf},
year = {2012},
date = {2012-08-01},
urldate = {2012-08-01},
booktitle = {The 8th International Wireless Communications & Mobile Computing Conference (IWCMC 2012), Limassol, Cyprus, pp. 257-262},
pages = {257 - 262},
abstract = {Third Generation Partnership Project (3GPP) introduced Multimedia Broadcast/Multicast Services (MBMS), in order to efficiently deliver the same content to multiple users over mobile cellular networks. To enhance the download and streaming delivery robustness against packet losses, 3GPP proposes the use of Forward Error Correction (FEC) on the application layer. The Application Layer FEC (AL-FEC) scheme that 3GPP standardized is based on the systematic, fountain Raptor code. In this work, in response to the emergence of an enhanced FEC scheme, we provide a performance evaluation of the existing standardized AL-FEC scheme with the newly introduced RaptorQ code. troducing a variety of simulation experiments, we analyze the performance behavior of each AL-FEC scheme considering several FEC encoding parameters. Furthermore, we
try to verify the improvements that have emerged in AL-FEC providing enhanced capabilities in multicast services over next generation mobile networks.},
keywords = {FEC, LTE, MBMS},
pubstate = {published},
tppubtype = {conference}
}
Third Generation Partnership Project (3GPP) introduced Multimedia Broadcast/Multicast Services (MBMS), in order to efficiently deliver the same content to multiple users over mobile cellular networks. To enhance the download and streaming delivery robustness against packet losses, 3GPP proposes the use of Forward Error Correction (FEC) on the application layer. The Application Layer FEC (AL-FEC) scheme that 3GPP standardized is based on the systematic, fountain Raptor code. In this work, in response to the emergence of an enhanced FEC scheme, we provide a performance evaluation of the existing standardized AL-FEC scheme with the newly introduced RaptorQ code. troducing a variety of simulation experiments, we analyze the performance behavior of each AL-FEC scheme considering several FEC encoding parameters. Furthermore, we
try to verify the improvements that have emerged in AL-FEC providing enhanced capabilities in multicast services over next generation mobile networks.
try to verify the improvements that have emerged in AL-FEC providing enhanced capabilities in multicast services over next generation mobile networks.
Bouras, Christos; Papazois, Andreas; Kokkinos, Vasileios; Kanakis, Nikos
Enhaning Reliable Mobile Multicasting with RaptorQ FEC Conference
17th IEEE Symposium on Computers andCommunication (ISCC), Cappadocia, Turkey, pp. 82-87, 2012.
Abstract | Links | BibTeX | Tags: FEC, LTE, MBMS
@conference{3000,
title = {Enhaning Reliable Mobile Multicasting with RaptorQ FEC},
author = {Christos Bouras and Andreas Papazois and Vasileios Kokkinos and Nikos Kanakis},
url = {https://telematics.upatras.gr/4588is041/},
year = {2012},
date = {2012-07-01},
urldate = {2012-07-01},
booktitle = {17th IEEE Symposium on Computers andCommunication (ISCC), Cappadocia, Turkey, pp. 82-87},
pages = {82-87},
abstract = {A crucial point on the successful deployment of multicast services is the enhanced reliability by means of advanced error control schemes. To this direction Third Generation
Partnership Project (3GPP) has standardized exclusively for Multimedia Broadcast/Multicast Services (MBMS) the use of a Forward Error Correction (FEC) mechanism on the application layer based on Raptor codes. Since the standardized systematic, fountain Raptor code is now considered obsolete, the emergence of a new variant of Raptor codes, named RaptorQ, provides enhanced capabilities for mobile multicast services. In this paper, we provide a performance comparison of the standardized Raptor Application Layer FEC (AL-FEC) scheme with the very promising RaptorQ FEC code. We examine the enhancements that RaptorQ introduces on the AL-FEC protection robustness, providing a thorough performance analysis in comparison with the current Raptor FEC scheme. Furthermore, in order to verify the improved performance of RaptorQ, we provide several simulation results utilizing the ns-3 environment, considering the application of both the examined AL-FEC schemes over multicast services for next generation mobile networks.},
keywords = {FEC, LTE, MBMS},
pubstate = {published},
tppubtype = {conference}
}
A crucial point on the successful deployment of multicast services is the enhanced reliability by means of advanced error control schemes. To this direction Third Generation
Partnership Project (3GPP) has standardized exclusively for Multimedia Broadcast/Multicast Services (MBMS) the use of a Forward Error Correction (FEC) mechanism on the application layer based on Raptor codes. Since the standardized systematic, fountain Raptor code is now considered obsolete, the emergence of a new variant of Raptor codes, named RaptorQ, provides enhanced capabilities for mobile multicast services. In this paper, we provide a performance comparison of the standardized Raptor Application Layer FEC (AL-FEC) scheme with the very promising RaptorQ FEC code. We examine the enhancements that RaptorQ introduces on the AL-FEC protection robustness, providing a thorough performance analysis in comparison with the current Raptor FEC scheme. Furthermore, in order to verify the improved performance of RaptorQ, we provide several simulation results utilizing the ns-3 environment, considering the application of both the examined AL-FEC schemes over multicast services for next generation mobile networks.
Partnership Project (3GPP) has standardized exclusively for Multimedia Broadcast/Multicast Services (MBMS) the use of a Forward Error Correction (FEC) mechanism on the application layer based on Raptor codes. Since the standardized systematic, fountain Raptor code is now considered obsolete, the emergence of a new variant of Raptor codes, named RaptorQ, provides enhanced capabilities for mobile multicast services. In this paper, we provide a performance comparison of the standardized Raptor Application Layer FEC (AL-FEC) scheme with the very promising RaptorQ FEC code. We examine the enhancements that RaptorQ introduces on the AL-FEC protection robustness, providing a thorough performance analysis in comparison with the current Raptor FEC scheme. Furthermore, in order to verify the improved performance of RaptorQ, we provide several simulation results utilizing the ns-3 environment, considering the application of both the examined AL-FEC schemes over multicast services for next generation mobile networks.
Bouras, Christos; Papazois, Andreas; Kokkinos, Vasileios; Kanakis, Nikos
AL-FEC for Streaming Services over LTE Systems Conference
14th International Symposiumon Wireless Personal Multimedia Communications, Brest, France, pp. 284-288, 2011.
Abstract | Links | BibTeX | Tags: FEC, LTE, MBMS
@conference{2990,
title = {AL-FEC for Streaming Services over LTE Systems},
author = {Christos Bouras and Andreas Papazois and Vasileios Kokkinos and Nikos Kanakis},
url = {https://telematics.upatras.gr/4760pid1999633/},
year = {2011},
date = {2011-10-01},
urldate = {2011-10-01},
booktitle = {14th International Symposiumon Wireless Personal Multimedia Communications, Brest, France, pp. 284-288},
pages = {284-288},
abstract = {The Third Generation Partnership Project (3GPP), recently introduced the evolution of the third generation (3G) cellular networks, the Long Term Evolution (LTE) telecommunication system. A key aspect of LTE specifications is the enhancement of Multimedia Broadcast/Multicast Services (MBMS), where the same content is transmitted to multiple users located in a specific service area. A significant point of the demanding multimedia services is the enhancement of the robustness against packet losses. To this direction, in order to support the efficient point-to-multipoint download and streaming delivery, 3GPP has included an Application Layer Forward Error Correction (AL-FEC) scheme in the MBMS standard. The standardized AL-FEC scheme is based on the systematic, fountain Raptor codes. In this paper, we investigate the application of AL-FEC over the MBMS streaming delivery method. We consider the benefits of AL-FEC for a seamless multimedia streaming transmission to multiple mobile users and we examine how the amount of FEC overhead can be adjusted under different packet loss conditions. For this purpose, we present a variety of realistic simulation scenarios for the performance evaluation of FEC considering several network and FEC encoding parameters. Furthermore, we provide suggestions in order to achieve efficient use of Raptor codes over LTE MBMS streaming services.},
keywords = {FEC, LTE, MBMS},
pubstate = {published},
tppubtype = {conference}
}
The Third Generation Partnership Project (3GPP), recently introduced the evolution of the third generation (3G) cellular networks, the Long Term Evolution (LTE) telecommunication system. A key aspect of LTE specifications is the enhancement of Multimedia Broadcast/Multicast Services (MBMS), where the same content is transmitted to multiple users located in a specific service area. A significant point of the demanding multimedia services is the enhancement of the robustness against packet losses. To this direction, in order to support the efficient point-to-multipoint download and streaming delivery, 3GPP has included an Application Layer Forward Error Correction (AL-FEC) scheme in the MBMS standard. The standardized AL-FEC scheme is based on the systematic, fountain Raptor codes. In this paper, we investigate the application of AL-FEC over the MBMS streaming delivery method. We consider the benefits of AL-FEC for a seamless multimedia streaming transmission to multiple mobile users and we examine how the amount of FEC overhead can be adjusted under different packet loss conditions. For this purpose, we present a variety of realistic simulation scenarios for the performance evaluation of FEC considering several network and FEC encoding parameters. Furthermore, we provide suggestions in order to achieve efficient use of Raptor codes over LTE MBMS streaming services.
Bouras, Christos; Alexiou, Antonios; Papazois, Andreas; Kokkinos, Vasileios; Asimakis, Konstantinos; Tseliou, Georgia
Reliable Multicasting over LTE: A Performance Study Conference
16th IEEE Symposioum on Computers and Communications (ISCC 2011), Kerkyra, Greece, pp. 603-608, 2011.
Abstract | Links | BibTeX | Tags: FEC, LTE, MBMS, MBSFN
@conference{2983,
title = {Reliable Multicasting over LTE: A Performance Study},
author = {Christos Bouras and Antonios Alexiou and Andreas Papazois and Vasileios Kokkinos and Konstantinos Asimakis and Georgia Tseliou},
url = {https://telematics.upatras.gr/2179cc_070/},
year = {2011},
date = {2011-06-01},
urldate = {2011-06-01},
booktitle = {16th IEEE Symposioum on Computers and Communications (ISCC 2011), Kerkyra, Greece, pp. 603-608},
pages = {603 - 608},
abstract = {With the booming of multimedia services, the 3rd Generation Partnership Project (3GPP) has introduced the evolved Multimedia Multicast/Broadcast Service (e-MBMS)
feature for LTE systems. The main objective of MBMS is to introduce real broadcast distribution capabilities into cellular systems. This purposed 3GPP to introduce the MBMS over a Single Frequency Network (MBSFN) operation. In this work we investigate the provision of MBMS service over a combination of MBSFN and PTM transmission schemes. We focus on the file repair procedure, because the distribution of binary data via MBMS must result in 100% error-free downloaded files. In order to achieve this goal, MBMS offers a Forward Error Correction (FEC) mechanism. Our simulation results show that there are some file repair schemes that achieve better performance as far as different network configurations are concerned. Furthermore, we compare all the file recovery methods and evaluate them against various network parameters in a realistic simulation environment.},
keywords = {FEC, LTE, MBMS, MBSFN},
pubstate = {published},
tppubtype = {conference}
}
With the booming of multimedia services, the 3rd Generation Partnership Project (3GPP) has introduced the evolved Multimedia Multicast/Broadcast Service (e-MBMS)
feature for LTE systems. The main objective of MBMS is to introduce real broadcast distribution capabilities into cellular systems. This purposed 3GPP to introduce the MBMS over a Single Frequency Network (MBSFN) operation. In this work we investigate the provision of MBMS service over a combination of MBSFN and PTM transmission schemes. We focus on the file repair procedure, because the distribution of binary data via MBMS must result in 100% error-free downloaded files. In order to achieve this goal, MBMS offers a Forward Error Correction (FEC) mechanism. Our simulation results show that there are some file repair schemes that achieve better performance as far as different network configurations are concerned. Furthermore, we compare all the file recovery methods and evaluate them against various network parameters in a realistic simulation environment.
feature for LTE systems. The main objective of MBMS is to introduce real broadcast distribution capabilities into cellular systems. This purposed 3GPP to introduce the MBMS over a Single Frequency Network (MBSFN) operation. In this work we investigate the provision of MBMS service over a combination of MBSFN and PTM transmission schemes. We focus on the file repair procedure, because the distribution of binary data via MBMS must result in 100% error-free downloaded files. In order to achieve this goal, MBMS offers a Forward Error Correction (FEC) mechanism. Our simulation results show that there are some file repair schemes that achieve better performance as far as different network configurations are concerned. Furthermore, we compare all the file recovery methods and evaluate them against various network parameters in a realistic simulation environment.
Bouras, Christos; Alexiou, Antonios; Papazois, Andreas; Kokkinos, Vasileios; Tseliou, Georgia
Optimizing the Combination of MBSFN and PTM Transmissions in LTE Systems Conference
Tenth Annual Wireless Telecommunications Symposium (WTS 2011), New York, USA, pp. 1-7, 2011.
Abstract | Links | BibTeX | Tags: LTE, MBMS, MBSFN
@conference{2982,
title = {Optimizing the Combination of MBSFN and PTM Transmissions in LTE Systems},
author = {Christos Bouras and Antonios Alexiou and Andreas Papazois and Vasileios Kokkinos and Georgia Tseliou},
url = {https://telematics.upatras.gr/41721569411933/},
year = {2011},
date = {2011-04-01},
urldate = {2011-04-01},
booktitle = {Tenth Annual Wireless Telecommunications Symposium (WTS 2011), New York, USA, pp. 1-7},
pages = {1 - 7},
abstract = {The 3rd Generation Partnership Project (3GPP) has introduced the evolved Multimedia Broadcast/Multicast Service (e-MBMS) feature for cellular systems as an evolution to the existing MBMS service. To support e-MBMS in Long Term Evolution (LTE) systems, 3GPP recommends the use of Point-to- Multipoint (PTM) transmissions and MBMS over a Single Frequency Network (MBSFN). MBSFN is a new feature where a time-synchronized common waveform is transmitted from multiple cells. In this paper we investigate the provision of MBMS service over a combination of MBSFN and PTM transmission methods. A cost analysis of the MBMS service is presented based on the transmission cost over all the interfaces and nodes of the LTE architecture. We evaluate the performance of this transmission scheme from telecommunication cost perspective and we compare it with other transmission schemes. The performance evaluation has been performed with the aid of a new simulation tool that estimates the cost for the MBMS provision under different network topologies, MBSFN deployments and user distributions.},
keywords = {LTE, MBMS, MBSFN},
pubstate = {published},
tppubtype = {conference}
}
The 3rd Generation Partnership Project (3GPP) has introduced the evolved Multimedia Broadcast/Multicast Service (e-MBMS) feature for cellular systems as an evolution to the existing MBMS service. To support e-MBMS in Long Term Evolution (LTE) systems, 3GPP recommends the use of Point-to- Multipoint (PTM) transmissions and MBMS over a Single Frequency Network (MBSFN). MBSFN is a new feature where a time-synchronized common waveform is transmitted from multiple cells. In this paper we investigate the provision of MBMS service over a combination of MBSFN and PTM transmission methods. A cost analysis of the MBMS service is presented based on the transmission cost over all the interfaces and nodes of the LTE architecture. We evaluate the performance of this transmission scheme from telecommunication cost perspective and we compare it with other transmission schemes. The performance evaluation has been performed with the aid of a new simulation tool that estimates the cost for the MBMS provision under different network topologies, MBSFN deployments and user distributions.
Bouras, Christos; Alexiou, Antonios; Papazois, Andreas; Kokkinos, Vasileios; Asimakis, Konstantinos
Combining MBSFN and PTM Transmissions Schemes for Resource Efficiency in LTE Networks Conference
9th International Conference on Wired/Wireless Internet Communications, Vilanova I la Geltru, Barcelona, Spain, June 15 - 17, 2011, pp. 56-67, 2011.
Abstract | Links | BibTeX | Tags: LTE, MBMS, MBSFN
@conference{2984,
title = {Combining MBSFN and PTM Transmissions Schemes for Resource Efficiency in LTE Networks},
author = {Christos Bouras and Antonios Alexiou and Andreas Papazois and Vasileios Kokkinos and Konstantinos Asimakis},
url = {https://telematics.upatras.gr/1517alexiou_wwic_2011_cr/},
year = {2011},
date = {2011-01-01},
urldate = {2011-01-01},
booktitle = {9th International Conference on Wired/Wireless Internet Communications, Vilanova I la Geltru, Barcelona, Spain, June 15 - 17, 2011, pp. 56-67},
pages = {56 - 67},
abstract = {Long Term Evolution (LTE) systems allow the transmission of rich multimedia services by utilizing the Multimedia Broadcast/Multicast Service (MBMS) over a Single Frequency Network (MBSFN). During MBSFN transmission a time-synchronized common waveform is transmitted from multiple cells. The 3rd Generation Partnership Project (3GPP) has specified that Point-to-Multipoint (PTM) transmission can be used in combination with MBSFN to provide MBMS-based services. In this paper we evaluate the combined transmission scheme in terms of Resource Efficiency (RE). The evaluation is performed through simulation experiments for various user distributions and LTE network configurations. The experiments are conducted with the aid of a proposed algorithm, which estimates the Spectral Efficiency (SE) of each cell and the RE of the network, and is also able to formulate the optimal network deployment that maximizes the network?s RE. For each of the examined scenarios, we present the most efficient solution (in terms of RE) selected by our algorithm and we compare it with other transmission schemes.},
keywords = {LTE, MBMS, MBSFN},
pubstate = {published},
tppubtype = {conference}
}
Long Term Evolution (LTE) systems allow the transmission of rich multimedia services by utilizing the Multimedia Broadcast/Multicast Service (MBMS) over a Single Frequency Network (MBSFN). During MBSFN transmission a time-synchronized common waveform is transmitted from multiple cells. The 3rd Generation Partnership Project (3GPP) has specified that Point-to-Multipoint (PTM) transmission can be used in combination with MBSFN to provide MBMS-based services. In this paper we evaluate the combined transmission scheme in terms of Resource Efficiency (RE). The evaluation is performed through simulation experiments for various user distributions and LTE network configurations. The experiments are conducted with the aid of a proposed algorithm, which estimates the Spectral Efficiency (SE) of each cell and the RE of the network, and is also able to formulate the optimal network deployment that maximizes the network?s RE. For each of the examined scenarios, we present the most efficient solution (in terms of RE) selected by our algorithm and we compare it with other transmission schemes.
Bouras, Christos; Alexiou, Antonios; Papazois, Andreas; Kokkinos, Vasileios; Tsichritzis, George
Adopting FEC for Reliable Multicasting over LTE Networks Conference
13th ACM International Conference on Modeling Analysis and Simulation of Wireless and Mobile Systems, Bodrum, Turkey, pp. 307-310, 2010.
Abstract | Links | BibTeX | Tags: FEC, LTE, MBMS
@conference{2981,
title = {Adopting FEC for Reliable Multicasting over LTE Networks},
author = {Christos Bouras and Antonios Alexiou and Andreas Papazois and Vasileios Kokkinos and George Tsichritzis},
url = {https://telematics.upatras.gr/6262p307-alexiou/},
year = {2010},
date = {2010-10-01},
urldate = {2010-10-01},
booktitle = {13th ACM International Conference on Modeling Analysis and Simulation of Wireless and Mobile Systems, Bodrum, Turkey, pp. 307-310},
pages = {307 - 310},
abstract = {The key feature for the provision of Multimedia Broadcast/Multicast Services (MBMS) in Long Term Evolution (LTE) networks is the Multimedia Broadcast over a Single
Frequency Network (MBSFN). On the other hand, the use of Forward Error Correction (FEC) in mobile multicast transmission has significant advantages and the 3rd Generation Partnership Project (3GPP) has adopted the application layer FEC in the MBMS standard. In this paper, we investigate the impact of the application layer FEC over the MBSFN delivery method.},
keywords = {FEC, LTE, MBMS},
pubstate = {published},
tppubtype = {conference}
}
The key feature for the provision of Multimedia Broadcast/Multicast Services (MBMS) in Long Term Evolution (LTE) networks is the Multimedia Broadcast over a Single
Frequency Network (MBSFN). On the other hand, the use of Forward Error Correction (FEC) in mobile multicast transmission has significant advantages and the 3rd Generation Partnership Project (3GPP) has adopted the application layer FEC in the MBMS standard. In this paper, we investigate the impact of the application layer FEC over the MBSFN delivery method.
Frequency Network (MBSFN). On the other hand, the use of Forward Error Correction (FEC) in mobile multicast transmission has significant advantages and the 3rd Generation Partnership Project (3GPP) has adopted the application layer FEC in the MBMS standard. In this paper, we investigate the impact of the application layer FEC over the MBSFN delivery method.
Bouras, Christos; Alexiou, Antonios; Papazois, Andreas; Kokkinos, Vasileios; Tsichritzis, George
Efficient MCS Selection for MBSFN Transmissions over LTE Networks Conference
IFIP Wireless Days 2010, Venice, Italy, pp. 1-5, 2010.
Abstract | Links | BibTeX | Tags: LTE, MBMS, MBSFN, MCS
@conference{2978,
title = {Efficient MCS Selection for MBSFN Transmissions over LTE Networks},
author = {Christos Bouras and Antonios Alexiou and Andreas Papazois and Vasileios Kokkinos and George Tsichritzis},
url = {https://telematics.upatras.gr/3975wd_1/},
year = {2010},
date = {2010-10-01},
urldate = {2010-10-01},
booktitle = {IFIP Wireless Days 2010, Venice, Italy, pp. 1-5},
pages = {1 - 5},
abstract = {Long Term Evolution (LTE), the next-generation network beyond 3G, is designed to support the explosion in demand for bandwidth-hungry multimedia services that are
already experienced in wired networks. To support Multimedia Broadcast/Multicast Services (MBMS), LTE offers functionality to transmit MBMS over a Single Frequency Network (MBSFN), where a time-synchronized common waveform is transmitted from multiple cells for a given duration. This significantly improves the Spectral Efficiency (SE) compared to conventional MBMS operation. The achieved SE is mainly determined by the Modulation and Coding Scheme (MCS) utilized by the LTE
physical layer. In this paper we propose and evaluate four approaches for the selection of the MCS that will be utilized for the transmission of the MBSFN data. The evaluation of the approaches is performed for different users distribution and from SE perspective. Based on the SE measurement, we determine the most suitable approach for the corresponding users distribution.},
keywords = {LTE, MBMS, MBSFN, MCS},
pubstate = {published},
tppubtype = {conference}
}
Long Term Evolution (LTE), the next-generation network beyond 3G, is designed to support the explosion in demand for bandwidth-hungry multimedia services that are
already experienced in wired networks. To support Multimedia Broadcast/Multicast Services (MBMS), LTE offers functionality to transmit MBMS over a Single Frequency Network (MBSFN), where a time-synchronized common waveform is transmitted from multiple cells for a given duration. This significantly improves the Spectral Efficiency (SE) compared to conventional MBMS operation. The achieved SE is mainly determined by the Modulation and Coding Scheme (MCS) utilized by the LTE
physical layer. In this paper we propose and evaluate four approaches for the selection of the MCS that will be utilized for the transmission of the MBSFN data. The evaluation of the approaches is performed for different users distribution and from SE perspective. Based on the SE measurement, we determine the most suitable approach for the corresponding users distribution.
already experienced in wired networks. To support Multimedia Broadcast/Multicast Services (MBMS), LTE offers functionality to transmit MBMS over a Single Frequency Network (MBSFN), where a time-synchronized common waveform is transmitted from multiple cells for a given duration. This significantly improves the Spectral Efficiency (SE) compared to conventional MBMS operation. The achieved SE is mainly determined by the Modulation and Coding Scheme (MCS) utilized by the LTE
physical layer. In this paper we propose and evaluate four approaches for the selection of the MCS that will be utilized for the transmission of the MBSFN data. The evaluation of the approaches is performed for different users distribution and from SE perspective. Based on the SE measurement, we determine the most suitable approach for the corresponding users distribution.