Vasileios Kokkinos
Short CV: Dr. Vasileios Kokkinos was born in Ioannina, Greece in 1981. He obtained his diploma from the Physics Department of the University of Patras in October 2003. Next, he was accepted in the postgraduate program “Electronics and Information Processing” in the same department and in March 2006 he obtained his Master Degree. In 2010 he received his PhD on Power Control in Mobile Telecommunication Networks from the Computer Engineering and Informatics Department. Dr. Kokkinos has worked as a member of Collaborating Teaching Staff in the context of the Open and Distance Teaching provided by the Hellenic Open University, in the framework of the Thematic Unit “PLI23 – Telematics, Internet and Society”, of the Under/Postgraduate Program “PLI – Informatics”, of the School of Sciences and Technology (academic years 2020-21 and 2021-22). He was also an appointed teaching staff of the courses “Broadband Technologies” and “Public Use Networks and Network Interconnection” of the study program of Computer Engineering & Informatics Department of the University of Patras during academic years 2020-21, 2021-22, 2022-23 and 2023-24. He currently works as Computer and Informatics Engineer and Manager at the Distributed Systems and Telematics Lab of the Computer Engineering and Informatics Department. His research interests include data networks, 3rd/4th/5th generation mobile telecommunications networks, multicast routing and group management, radio resource management, internet of things and machine learning. He has participated in several R&D projects, and he has published several research papers in various well-known refereed conferences and articles in scientific journals.
Book Chapters
Bouras, Christos; Kokkinos, Vasileios; Gkamas, Apostolos; Michos, Evangelos; Sina, Ioannis; Prokopiou, Ioannis; Allayiotis, Foivos
An Introduction of Upcoming Radio Resource Management Techniques for 5G Networks Book Chapter
In: Advances in Engineering Research, Nova Science Publishers, vol. 46, Chapter 3, pp. 147-188, 2022.
Abstract | Links | BibTeX | Tags: DUDe
@inbook{4569,
title = {An Introduction of Upcoming Radio Resource Management Techniques for 5G Networks},
author = {Christos Bouras and Vasileios Kokkinos and Apostolos Gkamas and Evangelos Michos and Ioannis Sina and Ioannis Prokopiou and Foivos Allayiotis},
url = {https://telematics.upatras.gr/978-1-68507-427-2-161-201/},
year = {2022},
date = {2022-01-01},
urldate = {2022-01-01},
booktitle = {Advances in Engineering Research, Nova Science Publishers},
volume = {46},
pages = {147-188},
chapter = {3},
abstract = {5G networks are the next generation of mobile internet connectivity, that are able to offer vastly increased speeds, more reliable connections, minimal latency and more supported devices. 5G networks are expected to supercharge Internet of Things (IoT) technology, so as to provide the infrastructure needed in order to support and transfer large data amounts that will enable a smarter and more connected world. To this direction, 5G incorporates many technologies and mechanisms that aid towards the overall goal, such as Multiple-Input and Multiple-Output (MIMO), Downlink (DL) and Uplink (UL) Decoupling (DUDe) and Machine Learning (ML). These technologies can significantly help towards more efficient resource allocation inside the next generation networks, offering increased spectral efficiency and data rates, better signal coverage, reduced latencies and many more. In this chapter, we will provide insights over the aforementioned technologies through firstly a literature review and later on by analyzing their architecture and their models. We will explain how these technologies can be taken advantage of in order to support the 5G networks and why they are core components of future networks, as it is expected that also 5G and Beyond networks will capitalize on them.},
keywords = {DUDe},
pubstate = {published},
tppubtype = {inbook}
}
5G networks are the next generation of mobile internet connectivity, that are able to offer vastly increased speeds, more reliable connections, minimal latency and more supported devices. 5G networks are expected to supercharge Internet of Things (IoT) technology, so as to provide the infrastructure needed in order to support and transfer large data amounts that will enable a smarter and more connected world. To this direction, 5G incorporates many technologies and mechanisms that aid towards the overall goal, such as Multiple-Input and Multiple-Output (MIMO), Downlink (DL) and Uplink (UL) Decoupling (DUDe) and Machine Learning (ML). These technologies can significantly help towards more efficient resource allocation inside the next generation networks, offering increased spectral efficiency and data rates, better signal coverage, reduced latencies and many more. In this chapter, we will provide insights over the aforementioned technologies through firstly a literature review and later on by analyzing their architecture and their models. We will explain how these technologies can be taken advantage of in order to support the 5G networks and why they are core components of future networks, as it is expected that also 5G and Beyond networks will capitalize on them.
Bouras, Christos; Kokkinos, Vasileios; Diles, Georgios; Topaloglou, Lefteris; Bouras, Christos; Kos, Andrej; Frank, Andrew
IMPACT OF BROADBAND ON ECONOMY Book Chapter
In: Policies and Tools for Efficient Design of Broadband Development, Chapter 2, pp. 28-42, 2014.
Abstract | Links | BibTeX | Tags:
@inbook{4067,
title = {IMPACT OF BROADBAND ON ECONOMY},
author = {Christos Bouras and Vasileios Kokkinos and Georgios Diles and Lefteris Topaloglou and Christos Bouras and Andrej Kos and Andrew Frank},
url = {https://telematics.upatras.gr/wp-content/uploads/2024/01/SIVA-paper-Chapter-2.pdf},
year = {2014},
date = {2014-01-01},
urldate = {2014-01-01},
booktitle = {Policies and Tools for Efficient Design of Broadband Development},
pages = {28-42},
chapter = {2},
abstract = {<p>In this chapter, we investigate the impact of broadband on the growth and employment in SEE countries, namely Austria, Bulgaria, the former Yugoslav Republic of Macedonia (FYROM), Greece, Montenegro, Slovenia. Specifically, we define the macroeconomic evidence required for the analysis. We then enforce regression analysis on data collected by the respective countries in order to find the correlation between broadband, growth and employment. The period of the examination was set to be the last decade in order to obtain an extended amount of data, and take into account possible influences on the results by the economic crisis and the subsequent recession of the last years in the area. We also estimate the cost savings to companies and the state by the usage of broadband-based e-government services. We then forecast these benefits to 2015 when the respective countries are expected to have reached the e-government usage level which is set by the European digital agenda (Digital agenda, 2013).</p>},
keywords = {},
pubstate = {published},
tppubtype = {inbook}
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<p>In this chapter, we investigate the impact of broadband on the growth and employment in SEE countries, namely Austria, Bulgaria, the former Yugoslav Republic of Macedonia (FYROM), Greece, Montenegro, Slovenia. Specifically, we define the macroeconomic evidence required for the analysis. We then enforce regression analysis on data collected by the respective countries in order to find the correlation between broadband, growth and employment. The period of the examination was set to be the last decade in order to obtain an extended amount of data, and take into account possible influences on the results by the economic crisis and the subsequent recession of the last years in the area. We also estimate the cost savings to companies and the state by the usage of broadband-based e-government services. We then forecast these benefits to 2015 when the respective countries are expected to have reached the e-government usage level which is set by the European digital agenda (Digital agenda, 2013).</p>
Bouras, Christos; Alexiou, Antonios; Papazois, Andreas; Kokkinos, Vasileios; Tsichritzis, George
Multimedia Broadcasting in LTE Networks Book Chapter
In: Access Environments and Quality of Service Provisioning: Solutions and Applications, Chapter 11, pp. 269-289, IGI Global, 2012.
Abstract | Links | BibTeX | Tags: LTE, MBMS
@inbook{3145,
title = {Multimedia Broadcasting in LTE Networks},
author = {Christos Bouras and Antonios Alexiou and Andreas Papazois and Vasileios Kokkinos and George Tsichritzis},
url = {https://telematics.upatras.gr/wp-content/uploads/2024/01/Multimedia-Broadcasting-in-LTE-Networks.pdf},
year = {2012},
date = {2012-01-01},
urldate = {2012-01-01},
booktitle = {Access Environments and Quality of Service Provisioning: Solutions and Applications},
pages = {269-289},
publisher = {IGI Global},
chapter = {11},
organization = {IGI Global},
abstract = {Long Term Evolution (LTE) constitutes the latest step before the 4th generation (4G) of radio technologies designed to increase the capacity and speed of mobile communications. To support Multimedia Broadcast/Multicast Services (MBMS), LTE offers the functionality to transmit MBMS over Single Frequency Network (MBSFN), where a time-synchronized common waveform is transmitted from multiple cells for a given duration. In MBSFN transmissions, the achieved Spectral Efficiency (SE) is mainly determined by the Modulation and Coding Scheme (MCS) selected. This study proposes and evaluates 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 approach that either maximizes or achieves a target SE for the corresponding users? distribution.},
keywords = {LTE, MBMS},
pubstate = {published},
tppubtype = {inbook}
}
Long Term Evolution (LTE) constitutes the latest step before the 4th generation (4G) of radio technologies designed to increase the capacity and speed of mobile communications. To support Multimedia Broadcast/Multicast Services (MBMS), LTE offers the functionality to transmit MBMS over Single Frequency Network (MBSFN), where a time-synchronized common waveform is transmitted from multiple cells for a given duration. In MBSFN transmissions, the achieved Spectral Efficiency (SE) is mainly determined by the Modulation and Coding Scheme (MCS) selected. This study proposes and evaluates 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 approach that either maximizes or achieves a target SE for the corresponding users? distribution.
Bouras, Christos; Papazois, Andreas; Kokkinos, Vasileios; Tseliou, Georgia
Forward Error Correction for Reliable e-MBMS Transmissions in LTE Networks Book Chapter
In: Cellurar Networks, pp. 353 - 374, InTech, 2011.
Links | BibTeX | Tags: FEC, LTE, MBMS
@inbook{3144,
title = {Forward Error Correction for Reliable e-MBMS Transmissions in LTE Networks},
author = {Christos Bouras and Andreas Papazois and Vasileios Kokkinos and Georgia Tseliou},
url = {https://telematics.upatras.gr/wp-content/uploads/2024/01/7910FEC.pdf},
year = {2011},
date = {2011-01-01},
urldate = {2011-01-01},
booktitle = {Cellurar Networks},
pages = {353 - 374},
publisher = {InTech},
organization = {InTech},
keywords = {FEC, LTE, MBMS},
pubstate = {published},
tppubtype = {inbook}
}
Bouras, Christos; Alexiou, Antonios; Kokkinos, Vasileios; Rekkas, Evangelos
The Multimedia Broadcast/Multicast Service of the Universal Mobile Telecommunications System Book Chapter
In: Selected Topics in Communication Networks and Distributed Systems, Chapter 2, pp. 43 - 78, World Scientific, 2010.
Abstract | Links | BibTeX | Tags: MBMS, UMTS
@inbook{3131,
title = {The Multimedia Broadcast/Multicast Service of the Universal Mobile Telecommunications System},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos and Evangelos Rekkas},
url = {https://telematics.upatras.gr/wp-content/uploads/2024/01/mbms.pdf},
year = {2010},
date = {2010-01-01},
urldate = {2010-01-01},
booktitle = {Selected Topics in Communication Networks and Distributed Systems},
pages = {43 - 78},
publisher = {World Scientific},
chapter = {2},
organization = {World Scientific},
abstract = {<p>The Universal Mobile Telecommunications System (UMTS) constitutes the premier third generation (3G) wireless technology that is dominating the global market. Multicasting is an efficient method of supporting group communication as it allows the transmission of packets to multiple destinations, using fewer network resources. The need for broadcasting and multicasting in UMTS led to the definition of the Multimedia Broadcast/Multicast Service (MBMS) framework, which targets the efficient utilization of radio and network resources of the UMTS network. This chapter introduces the key concepts of UMTS and in particular the MBMS framework of UMTS. Moreover, it investigates the power profiles of several transport channels (common and dedicated) which could be employed for the transmission of MBMS services to mobile users. Problems regarding the high power requirements for the realization of MBMS are also presented. The reader will become familiar with these problems and the proposed techniques/solutions.</p>},
keywords = {MBMS, UMTS},
pubstate = {published},
tppubtype = {inbook}
}
<p>The Universal Mobile Telecommunications System (UMTS) constitutes the premier third generation (3G) wireless technology that is dominating the global market. Multicasting is an efficient method of supporting group communication as it allows the transmission of packets to multiple destinations, using fewer network resources. The need for broadcasting and multicasting in UMTS led to the definition of the Multimedia Broadcast/Multicast Service (MBMS) framework, which targets the efficient utilization of radio and network resources of the UMTS network. This chapter introduces the key concepts of UMTS and in particular the MBMS framework of UMTS. Moreover, it investigates the power profiles of several transport channels (common and dedicated) which could be employed for the transmission of MBMS services to mobile users. Problems regarding the high power requirements for the realization of MBMS are also presented. The reader will become familiar with these problems and the proposed techniques/solutions.</p>
Bouras, Christos; Alexiou, Antonios; Kokkinos, Vasileios
Radio Resource Management for E-MBMS Transmissions towards LTE Book Chapter
In: Evolved Cellular Network Planning and Optimization for UMTS and LTE, Chapter 9, pp. 331 - 360, Auerbach Publications, CRC Press, Taylor and Francis Group, 2010.
Abstract | Links | BibTeX | Tags: LTE, MBMS, Power Control
@inbook{3139,
title = {Radio Resource Management for E-MBMS Transmissions towards LTE},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos},
url = {https://telematics.upatras.gr/wp-content/uploads/2024/01/1335K10322_C009.pdf},
year = {2010},
date = {2010-01-01},
urldate = {2010-01-01},
booktitle = {Evolved Cellular Network Planning and Optimization for UMTS and LTE},
pages = {331 - 360},
publisher = {Auerbach Publications, CRC Press, Taylor and Francis Group},
chapter = {9},
organization = {Auerbach Publications, CRC Press, Taylor and Francis Group},
abstract = {<p>Long Term Evolution (LTE) constitutes a key standard that paves the way for the future mobile broadband landscape envisioned by 4th Generation (4G) wireless networks. Actu- ally, LTE addresses the emerging trend for the mass provision of rich multimedia services, such as Mobile TV, in a more power and spectral e±cient way than its predecessors. To this direction, the Evolved - Multimedia Broadcast/Multicast Service (E-MBMS) frame- work is envisaged to play an instrumental role for the LTE proliferation in mobile. E-MBMS constitutes the evolutionary successor of MBMS, which was introduced in the Release 6 of Universal Mobile Telecommunication System (UMTS). MBMS is designed in order to deliver multimedia data from a single source entity to multiple destinations. However, downlink ca- pacity in such networks is limited by base station transmission power. As an aftermath, in MBMS e±cient power allocation techniques should be implemented so as to ensure the mass provision of multimedia applications to mobile users. This chapter presents several techniques and mechanisms used today for MBMS power optimization in next generation cellular networks.</p>},
keywords = {LTE, MBMS, Power Control},
pubstate = {published},
tppubtype = {inbook}
}
<p>Long Term Evolution (LTE) constitutes a key standard that paves the way for the future mobile broadband landscape envisioned by 4th Generation (4G) wireless networks. Actu- ally, LTE addresses the emerging trend for the mass provision of rich multimedia services, such as Mobile TV, in a more power and spectral e±cient way than its predecessors. To this direction, the Evolved - Multimedia Broadcast/Multicast Service (E-MBMS) frame- work is envisaged to play an instrumental role for the LTE proliferation in mobile. E-MBMS constitutes the evolutionary successor of MBMS, which was introduced in the Release 6 of Universal Mobile Telecommunication System (UMTS). MBMS is designed in order to deliver multimedia data from a single source entity to multiple destinations. However, downlink ca- pacity in such networks is limited by base station transmission power. As an aftermath, in MBMS e±cient power allocation techniques should be implemented so as to ensure the mass provision of multimedia applications to mobile users. This chapter presents several techniques and mechanisms used today for MBMS power optimization in next generation cellular networks.</p>
Bouras, Christos; Alexiou, Antonios; Kokkinos, Vasileios
Efficient Power Allocation in E-MBMS Enabled 4G Networks Book Chapter
In: Wireless Network Traffic and Quality of Service Support: Trends and Standards, Chapter 18, pp. 458 - 488, IGI Global, 2010.
Abstract | Links | BibTeX | Tags: LTE, MBMS, Power Control
@inbook{3138,
title = {Efficient Power Allocation in E-MBMS Enabled 4G Networks},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos},
url = {https://telematics.upatras.gr/wp-content/uploads/2024/01/Chap18.pdf},
year = {2010},
date = {2010-01-01},
urldate = {2010-01-01},
booktitle = {Wireless Network Traffic and Quality of Service Support: Trends and Standards},
pages = {458 - 488},
publisher = {IGI Global},
chapter = {18},
organization = {IGI Global},
abstract = {<p>The plethora of mobile multimedia services that are expected to face high penetration, poses the need for the deployment of a resource economic scheme in Long Term Evolution (LTE) networks. To this direction, the Evolved - Multimedia Broadcast / Multicast Service (E- MBMS) is envisaged to play an instrumental role for LTE proliferation and set the basis for a successful 4th Generation (4G) standardization process. One of the most critical aspects of E- MBMS performance is the selection of the most efficient radio bearer, in terms of power consumption. This chapter presents the prevailing radio bearer selection mechanisms and examines their performance in terms of power consumption. Furthermore, it discusses problems regarding the high power requirements for the realization of E-MBMS and evaluates the proposed techniques/solutions. Finally, this chapter presents a novel mechanism for efficient power control during E-MBMS transmissions that conforms to LTE requirements for simultaneous provision of multiple multimedia sessions.</p>},
keywords = {LTE, MBMS, Power Control},
pubstate = {published},
tppubtype = {inbook}
}
<p>The plethora of mobile multimedia services that are expected to face high penetration, poses the need for the deployment of a resource economic scheme in Long Term Evolution (LTE) networks. To this direction, the Evolved - Multimedia Broadcast / Multicast Service (E- MBMS) is envisaged to play an instrumental role for LTE proliferation and set the basis for a successful 4th Generation (4G) standardization process. One of the most critical aspects of E- MBMS performance is the selection of the most efficient radio bearer, in terms of power consumption. This chapter presents the prevailing radio bearer selection mechanisms and examines their performance in terms of power consumption. Furthermore, it discusses problems regarding the high power requirements for the realization of E-MBMS and evaluates the proposed techniques/solutions. Finally, this chapter presents a novel mechanism for efficient power control during E-MBMS transmissions that conforms to LTE requirements for simultaneous provision of multiple multimedia sessions.</p>
Conferences
Bouras, Christos; Alexiou, Antonios; Kokkinos, Vasileios; Rekkas, Evangelos
Power Efficient Radio Bearer Selection in MBMS Multicast Mode Conference
10th ACM - IEEE International Symposium on Modeling, Analysis and Simulation of Wireless and Mobile Systems - MSWIM 2007, Chania, Crete, Greece, pp. 261-268, 2007.
Abstract | Links | BibTeX | Tags: MBMS, Power Control, UMTS
@conference{2909,
title = {Power Efficient Radio Bearer Selection in MBMS Multicast Mode},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos and Evangelos Rekkas},
url = {https://telematics.upatras.gr/6838mswim27r-alexiou/},
year = {2007},
date = {2007-10-01},
urldate = {2007-10-01},
booktitle = {10th ACM - IEEE International Symposium on Modeling, Analysis and Simulation of Wireless and Mobile Systems - MSWIM 2007, Chania, Crete, Greece, pp. 261-268},
pages = {261 - 268},
abstract = {Multimedia Broadcast Multicast Services (MBMS) was introduced in Third Generation Partnership Project (3GPP) Release 6 in order to address the need for the efficient usage of the expensive radio resources. The goal of this effort is to support downlink streaming and download-and-play type services to large groups of users. From the radio perspective, MBMS includes point-to-point (PtP) and point-to-multipoint (PtM) modes. 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 an MBMS service. Consequently, the analysis of the transmitted power plays a fundamental role in the planning and optimization process of Universal Mobile Telecommunications System (UMTS) radio access networks. In this paper we investigate the factors that affect the Node Bs transmission power levels during an MBMS session, such as, cell deployment, propagation models, users? distributions and
mobility issues. To this direction, the transport channels in the downlink, currently existing in UMTS which could be used to transmit the multicast data over the UMTS Terrestrial Radio- Access Network (UTRAN) interfaces are examined.},
keywords = {MBMS, Power Control, UMTS},
pubstate = {published},
tppubtype = {conference}
}
Multimedia Broadcast Multicast Services (MBMS) was introduced in Third Generation Partnership Project (3GPP) Release 6 in order to address the need for the efficient usage of the expensive radio resources. The goal of this effort is to support downlink streaming and download-and-play type services to large groups of users. From the radio perspective, MBMS includes point-to-point (PtP) and point-to-multipoint (PtM) modes. 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 an MBMS service. Consequently, the analysis of the transmitted power plays a fundamental role in the planning and optimization process of Universal Mobile Telecommunications System (UMTS) radio access networks. In this paper we investigate the factors that affect the Node Bs transmission power levels during an MBMS session, such as, cell deployment, propagation models, users? distributions and
mobility issues. To this direction, the transport channels in the downlink, currently existing in UMTS which could be used to transmit the multicast data over the UMTS Terrestrial Radio- Access Network (UTRAN) interfaces are examined.
mobility issues. To this direction, the transport channels in the downlink, currently existing in UMTS which could be used to transmit the multicast data over the UMTS Terrestrial Radio- Access Network (UTRAN) interfaces are examined.
Bouras, Christos; Alexiou, Antonios; Kokkinos, Vasileios
Power Saving Techniques in MBMS Multicast Mode Conference
3rd ACM International Workshop on Wireless Multimedia Networking and Performance Modeling - ACM WMUNEP 2007, Chania, Crete, Greece, pp. 62-69, 2007.
Abstract | Links | BibTeX | Tags: MBMS, Power Control, UMTS
@conference{2910,
title = {Power Saving Techniques in MBMS Multicast Mode},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos},
url = {https://telematics.upatras.gr/6663wmunep2007_bouras/},
year = {2007},
date = {2007-10-01},
urldate = {2007-10-01},
booktitle = {3rd ACM International Workshop on Wireless Multimedia Networking and Performance Modeling - ACM WMUNEP 2007, Chania, Crete, Greece, pp. 62-69},
pages = {62 - 69},
abstract = {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 services both in the core network and, most importantly, in the air interface of UTRAN (UMTS Terrestrial Radio Access Network). From the radio perspective, MBMS includes point-to-point (PtP) and pointto- multipoint (PtM) modes. The latter aims to overcome network congestion when a large number of users request the same content. One of the most important aspects in MBMS is power control. 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 an MBMS service. Techniques, such us rate splitting and mixed usage of transport
channels can be used to reduce the power requirement of delivering multicast traffic for MBMS users. To this direction, this paper presents simulation results that will reinforce the need for the usage of such techniques and will reveal the amount of power that is saved.},
keywords = {MBMS, Power Control, UMTS},
pubstate = {published},
tppubtype = {conference}
}
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 services both in the core network and, most importantly, in the air interface of UTRAN (UMTS Terrestrial Radio Access Network). From the radio perspective, MBMS includes point-to-point (PtP) and pointto- multipoint (PtM) modes. The latter aims to overcome network congestion when a large number of users request the same content. One of the most important aspects in MBMS is power control. 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 an MBMS service. Techniques, such us rate splitting and mixed usage of transport
channels can be used to reduce the power requirement of delivering multicast traffic for MBMS users. To this direction, this paper presents simulation results that will reinforce the need for the usage of such techniques and will reveal the amount of power that is saved.
resources for the transmission of multimedia services both in the core network and, most importantly, in the air interface of UTRAN (UMTS Terrestrial Radio Access Network). From the radio perspective, MBMS includes point-to-point (PtP) and pointto- multipoint (PtM) modes. The latter aims to overcome network congestion when a large number of users request the same content. One of the most important aspects in MBMS is power control. 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 an MBMS service. Techniques, such us rate splitting and mixed usage of transport
channels can be used to reduce the power requirement of delivering multicast traffic for MBMS users. To this direction, this paper presents simulation results that will reinforce the need for the usage of such techniques and will reveal the amount of power that is saved.
Bouras, Christos; Alexiou, Antonios; Kokkinos, Vasileios; Rekkas, Evangelos
Evaluation of the multicast mode of MBMS Conference
18th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Athens, Greece, pp. 1-5, 2007.
Abstract | Links | BibTeX | Tags: MBMS, UMTS
@conference{2906,
title = {Evaluation of the multicast mode of MBMS},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos and Evangelos Rekkas},
url = {https://telematics.upatras.gr/4388pimrc07-pimrc-441-antoniosalexiou/},
year = {2007},
date = {2007-09-01},
urldate = {2007-09-01},
booktitle = {18th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Athens, Greece, pp. 1-5},
pages = {1-5 },
abstract = {Multicasting is an efficient way for delivering rich multimedia applications to large user groups as it allows the transmission of packets to multiple destinations using fewer network resources. 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 environments and multicast users? distributions. Furthermore, for the evaluation of the scheme, we consider different transport channels for the transmission of the data over the UTRAN interfaces and propose a cost based scheme for the efficient radio bearer selection that minimizes the packet delivery cost.},
keywords = {MBMS, UMTS},
pubstate = {published},
tppubtype = {conference}
}
Multicasting is an efficient way for delivering rich multimedia applications to large user groups as it allows the transmission of packets to multiple destinations using fewer network resources. 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 environments and multicast users? distributions. Furthermore, for the evaluation of the scheme, we consider different transport channels for the transmission of the data over the UTRAN interfaces and propose a cost based scheme for the efficient radio bearer selection that minimizes the packet delivery cost.
Bouras, Christos; Alexiou, Antonios; Kokkinos, Vasileios; Rekkas, Evangelos
MBMS Power Planning in Macro and Micro Cell Envirohments Conference
Second IEEE Workshop on multimedia Applications over Wireless Networks(MediaWiN 2007), Aveiro, Portugal, pp. 33-38, 2007.
Abstract | Links | BibTeX | Tags: MBMS, Power Control, UMTS
@conference{2898,
title = {MBMS Power Planning in Macro and Micro Cell Envirohments},
author = {Christos Bouras and Antonios Alexiou and Vasileios Kokkinos and Evangelos Rekkas},
url = {https://telematics.upatras.gr/1105314160559/},
year = {2007},
date = {2007-07-01},
urldate = {2007-07-01},
booktitle = {Second IEEE Workshop on multimedia Applications over Wireless Networks(MediaWiN 2007), Aveiro, Portugal, pp. 33-38},
pages = {33 - 38},
abstract = {Multimedia Broadcast Multicast Services (MBMS), introduced in Third Generation Partnership Project (3GPP) Release 6, is a point-to-multipoint downlink bearer service that addresses the need for the efficient usage of the expensive radio resources. Power control is one of the most important aspects in MBMS due to the fact that Node B?s transmission power is a limited resource and must be shared among all MBMS users in a cell. Consequently, the analysis of transmitted power plays a fundamental role in the planning and optimization process of Universal Mobile Telecommunications System (UMTS) radio access networks. This paper investigates several factors affecting Node B?s transmission power levels such as, cell deployment, propagation models, Quality of Service (QoS) requirements, users? distributions and mobility issues. Finally, different transport channels for the transmission of the multicast data over the UTRAN interfaces are considered.},
keywords = {MBMS, Power Control, UMTS},
pubstate = {published},
tppubtype = {conference}
}
Multimedia Broadcast Multicast Services (MBMS), introduced in Third Generation Partnership Project (3GPP) Release 6, is a point-to-multipoint downlink bearer service that addresses the need for the efficient usage of the expensive radio resources. Power control is one of the most important aspects in MBMS due to the fact that Node B?s transmission power is a limited resource and must be shared among all MBMS users in a cell. Consequently, the analysis of transmitted power plays a fundamental role in the planning and optimization process of Universal Mobile Telecommunications System (UMTS) radio access networks. This paper investigates several factors affecting Node B?s transmission power levels such as, cell deployment, propagation models, Quality of Service (QoS) requirements, users? distributions and mobility issues. Finally, different transport channels for the transmission of the multicast data over the UTRAN interfaces are considered.