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31 results on '"Venkatasubramanian, Venkatkumar"'

1. Challenges & Solutions for above 6 GHz Radio Access Network Integration for Future Mobile Communication Systems

Author

Rybakowski, Marcin, Safjan, Krystian, Venkatasubramanian, Venkatkumar, Vijay, Arnesh, Dussopt, Laurent, Zaidi, Ali, Peter, Michael, Luo, Jian, Fresia, Maria, and Shariat, Mehrdad

Subjects
Computer Science - Information Theory
Abstract

Mobile communication technology has been rapidly evolving ever since its first introduction in the late 1980s. The development witnessed is not just in the refinement of the radio access techniques, but also in the progression towards offering sophisticated features and services to the mobile phone users. To fulfill this ever-growing user demand and market trends, frequency ranges in millimeter wave bands are envisioned for wireless radio transmission. To respond to this trends, the EU-funded mmMAGIC project has been launched and its main objective is to design and develop radio access techniques operating in 6-100 GHz bands. When it comes to developing technologies for systems operating these frequency ranges, a major challenge encountered will be in terms of its radio access network integration. Unquestionably, issues at various aspects of physical layer design, channel modelling, architecture, network functions and deployment will be encountered; problems in multi-node and multi-antenna transceiver designs will surface as well. The work carried in this project will address those challenges and propose solutions; but additionally, measure its efficiency against the project specific KPIs set to meet the requirements of the operational future 5G systems. The main intention of this paper is to outline some of the challenges, more specifically to highlight the network integration challenges, and discuss some of its technical solutions. The primary purpose here is to focus towards integrated 5G technology, thereby opening further research avenues for the exploration of new and alternate frequency bands in the electromagnetic spectrum., Comment: 6 pages, 4 figures

Published
2017
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11. Resource and Mobility Management in the Network Layer of 5G Cellular Ultra-Dense Networks

Author

Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, European Commission, Calabuig Soler, Daniel, Barmpounakis, Sokratis, Giménez Colás, Sonia, Kousaridas, Apostolos, Lakshmana, Tilak R., Lorca, Javier, Lunden, Petteri, Ren, Zhe, Sroka, Pawel, Ternon, Emmanuel, Venkatasubramanian, Venkatkumar, Maternia, Michal, Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, European Commission, Calabuig Soler, Daniel, Barmpounakis, Sokratis, Giménez Colás, Sonia, Kousaridas, Apostolos, Lakshmana, Tilak R., Lorca, Javier, Lunden, Petteri, Ren, Zhe, Sroka, Pawel, Ternon, Emmanuel, Venkatasubramanian, Venkatkumar, and Maternia, Michal

Abstract

© 2017 IEEE. Personal use of this material is permitted. Permissíon from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertisíng or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works., [EN] The provision of very high capacity is one of the big challenges of the 5G cellular technology. This challenge will not be met using traditional approaches like increasing spectral efficiency and bandwidth, as witnessed in previous technology generations. Cell densification will play a major role thanks to its ability to increase the spatial reuse of the available resources. However, this solution is accompanied by some additional management challenges. In this article, we analyze and present the most promising solutions identified in the METIS project for the most relevant network layer challenges of cell densification: resource, interference and mobility management.

Published
2017

12. 5G Multi-RAT Integration Evaluations Using a Common PDCP Layer

Author

Kilinc, Caner, primary, Ericson, Marten, additional, Rugeland, Patrik, additional, Da Silva, Icaro, additional, Zaidi, Ali, additional, Aydin, Osman, additional, Venkatasubramanian, Venkatkumar, additional, Filippou, Miltiades C., additional, Mezzavilla, Marco, additional, Kuruvatti, Nandish, additional, and Monserrat, Jose F., additional

Published
2017
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13. Resource and Mobility Management in the Network Layer of 5G Cellular Ultra-Dense Networks

Author

Calabuig, Daniel, primary, Barmpounakis, Sokratis, additional, Gimenez, Sonia, additional, Kousaridas, Apostolos, additional, Lakshmana, Tilak R., additional, Lorca, Javier, additional, Lunden, Petteri, additional, Ren, Zhe, additional, Sroka, Pawel, additional, Ternon, Emmanuel, additional, Venkatasubramanian, Venkatkumar, additional, and Maternia, Michal, additional

Published
2017
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15. D4.1 Draft air interface harmonization and user plane design

Author

Schellmann, Malte, Venkatasubramanian, Venkatkumar, Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, European Commission, Aydin, Osman, Gebert, Jens, Belschner, Jakob, Bazzi, Jamal, Weitkemper, Petra, Kilinc, Caner, Leonardo Da Silva, Icaro, Zaidi, Ali, Filippou, Miltiadis, Salem, Ahmed Soud, Mezzavilla, Marco, Monserrat del Río, José Francisco, Calabuig Soler, Daniel, Schellmann, Malte, Venkatasubramanian, Venkatkumar, Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, European Commission, Aydin, Osman, Gebert, Jens, Belschner, Jakob, Bazzi, Jamal, Weitkemper, Petra, Kilinc, Caner, Leonardo Da Silva, Icaro, Zaidi, Ali, Filippou, Miltiadis, Salem, Ahmed Soud, Mezzavilla, Marco, Monserrat del Río, José Francisco, and Calabuig Soler, Daniel

Abstract

The METIS-II project envisions the design of a new air interface in order to fulfil all the performance requirements of the envisioned 5G use cases including some extreme low latency use cases and ultra-reliable transmission, xMBB requiring additional capacity that is only available in very high frequencies, as well as mMTC with extremely densely distributed sensors and very long battery life requirements. Designing an adaptable and flexible 5G Air Interface (AI), which will tackle these use cases while offering native multi-service support, is one of the key tasks of METIS-II WP4. This deliverable will highlight the challenges of designing an AI required to operate in a wide range of spectrum bands and cell sizes, capable of addressing the diverse services with often diverging requirements, and propose a design and suitability assessment framework for 5G AI candidates.

Published
2016

16. Rethinking the mobile and wireless network architecture: The METIS research into 5G

Author

Omer Bulakci, Josef Eichinger, Heinz Droste, Olav Queseth, Afif Osseiran, Uwe Dötsch, Hugo Tullberg, Jose F. Monserrat, Venkatasubramanian Venkatkumar, Makis Stamatelatos, and Gerd Zimmermann

Subjects
Public land mobile network, business.industry, Computer science, Wireless network, Mobile broadband, Mobile computing, Metis, Wireless WAN, Mobile Web, Mobile technology, Telecommunications, business
Abstract

The METIS project is laying the foundation of 5G mobile and wireless communication systems putting together the point of view of vendors, operators, third party players and academia. In particular, METIS is developing and evaluating the key technology components of 5G systems. In this framework, a new mobile and wireless network architecture is required to accommodate those technical enablers and communication paradigms while taking into account existing and emerging architectural trends. This article provides an overview of the METIS system and architecture research into this future mobile and wireless network, discussing various alternatives and perspectives.

Published
2014

20. Numerology and frame structure for 5G radio access

Author

Vihriala, Jaakko, primary, Zaidi, Ali A., additional, Venkatasubramanian, Venkatkumar, additional, He, Ning, additional, Tiirola, Esa, additional, Medbo, Jonas, additional, Lahetkangas, Eeva, additional, Werner, Karl, additional, Pajukoski, Kari, additional, Cedergren, Andreas, additional, and Baldemair, Robert, additional

Published
2016
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27. Overview on initial METIS D2D Concept

Author

Li, Zexian, primary, Moisio, Martti, additional, Uusitalo, Mikko, additional, Lundén, Petteri, additional, Wijting, Carl, additional, Sanchez Moya, Fernando, additional, Yaver, Ali, additional, and Venkatasubramanian, Venkatkumar, additional

Published
2014
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30. Opportunistic resource allocation and relaying methods for quality of service in the downlink of future cellular wireless networks

Author

Venkatasubramanian, Venkatkumar

Subjects
1005 Communications Technologies, Centre for Telecommunications and Micro-Electronics (CTME), antennae, Load Balanced Opportunistic Resource Allocation, LBORA, Guaranteed Bit Rate by Relay Scheduling, GBRS
Abstract

Wireless communications is on the brink of a major change. New technologies called multiple antenna systems (MIMO) and orthogonal frequency division multiple access (OFDMA) will be put together in the deployment of the next generation of cellular standards known as 4G. Consumers can expect peak data rates up to 160 Mbps. If the user is to have a good network experience with multimedia applications, then consistency in service data rates will be needed.

Published
2011

31. Transmit Diversity and its Application to Cooperative Networking

Author

Venkatasubramanian, Venkatkumar

Subjects
290000 Engineering and Technology, 0906 Electrical and Electronic Engineering, School of Engineering and Science, wireless communication, centralized control, coverage, osi
Abstract

Wireless communications has been so far largely based on centralized control, which in effect has limited its deployment, coverage and application scenarios. The paradigm of peer-to-peer wireless communications is fundamentally to remove this bottleneck and to further expand wireless communications into new applications. The technical and design challenges in implementing these networks are however plenty and exist in all the layers of the OSI protocol stack. In this thesis, we only consider the physical layer model of these networks. We identify multiple antenna systems as a vital component of physical layer solutions. We first investigate the case of multiple antenna space-time coding techniques to achieve spatial diversity. We observe that when correlation between the antennas in a local antenna array becomes high due to space constraints in a terminal, current performance achieving strategies do not actually deliver good results. Moreover, most mobile terminals are currently equipped with only one antenna. In view of this limitation, we study the recently proposed user cooperation techniques for exploiting spatial diversity with user power constraints for a simple three terminal network. We find that these systems are beneficial even with relatively simple protocols such as selection relaying. Finally, with simulation results, we demonstrate that the system performance can be improved significantly via near-to optimal selection relaying.

Published
2006

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