Technologies For Advanced Heterogeneous Networks

This book constitutes the refereed proceedings of the Second Asian Internet Engineering Conference, AINTEC 2006, held in Pathumthani, Thailand, in November 2006. The 12 revised full papers presented together with 5 invited papers were carefully reviewed and selected from 36 submissions. The papers are organized in topical sections on service architecture, multicast, performance in WLAN, routing, and multihoming in mobile networks.

The Asian Internet Engineering Conference (AINTEC) brings together researchers and engineers interested in practical and theoretical problems in Internet technologies. The conference aims at addressing issues pertinent to the Asian region with vast diversities of socio-economic and networking conditions while inviting high-quality and recent research results from the global inter- tional research community. The ?rst event was jointly organized by the Internet Education and Research Laboratory of the Asian Institute of Technology (AIT) and the WIDE Project with support from the APAN-TH community. In response to the recent natural disaster in Asia, AINTEC 2005 solicited papers, among other things, on the survival of the Internet in order to provide alternative means of communication in emergency and chaotic situations. The main topics include: Mobile IP Mobile Ad Hoc and Emergency Networks Multimedia or Multi-Services IP-Based Networks Peer-to-Peer Measurement and Performance Analysis Internet over Satellite Communications There were 52 submissions to the Technical Program,and we selected the 18 papers presented in these proceedings. In addition, we have three invited papers and one invited position paper by leading experts in the ?eld. Finally, we would like to acknowledge the conference General Chair, K- chana Kanchanasut of AIT, and the Local Organizers team from AIT, namely, Pensri Arunwatanamongkol, Withmone Tin Latt and Yasuo Tsuchimoto, for organizing and arranging this conference. We are also grateful to the French Ministry of Foreign A?airs through its French Regional Cooperation and the ICT Asia project (STIC-ASIE) for providing travel support.

This book constitutes the refereed proceedings of the First Asian Internet Engineering Conference, AINTEC 2005, held in Bangkok, Thailand in December 2005. The 18 revised full papers presented together with 3 invited papers and 1 invited position paper were carefully reviewed and selected from 52 submissions. The papers are organized in topical sections on wireless, mobility and emergency network, routing in ad-hoc network, extending manet, securing network, multi-services in IP-based networks, as well as measurement and performance analysis.

A comprehensive summary of theoretical and practical developments in LTE Heterogeneous Networks The last decade has witnessed the proliferation of mobile broadband data and the trend is likely to increase in the coming years. Current cellular networks are ill equipped to deal with this surge in demand. To satisfy user demand and maximize profits, a new paradigm to operate networks is needed. Heterogeneous networks, that deploy an overlay of small cells with limited coverage and transmit power, over a macro coverage area is the solution by providing capacity and coverage where it is needed. This book presents a comprehensive overview of small cell based heterogeneous networks within the framework of 3GPP LTE-Advanced which is the major enabler of current and future heterogeneous networks. The book first establishes the basics of LTE standards 8 -10. Wherever relevant, the underlying theory of wireless communications is explained and the signaling and protocol aspects of LTE Releases 8-10 are presented. Next the book presents a systematic study of the inter cell interference (eICIC and FeICIC) mechanisms that have been standardized in LTE releases 10 and 11 to mitigate the interference arising in heterogeneous networks. From simple blank subframe design and implementation, the book discusses more advanced transceiver signal processing and carrier aggregation (CA) based mechanisms to improve performance. Besides data, control channel enhancements such as enhanced PDCCH (ePDCCH) are also discussed. Subsequently the book discusses the possibility of base stations being allowed to coordinate to manage interference. This technique, called CoMP, has the potential of vastly improving network performance. However several practical challenges first have to be overcome before this potential can be realized. The book presents the different CoMP categories introduced in LTE release 11, the required signal processing and the changes that were introduced in Release-11 for supporting CoMP. The book then presents the state of the art developments in heterogeneous networks that are currently taking place in 3GPP with the initiation of Release 12. A whole array of new technologies have been introduced such as dynamic switching of small cells, new carrier types with reduced control signaling, dynamic reconfiguration of TDD-LTE, joint configuration of TDD and FDD via carrier aggregation and lastly advanced MIMO signal processing with three dimensional beamforming. All these technologies will work in unison leading to efficient operations of small cells. The authors thus comprehensively summarize the advances in heterogeneous networks over the last couple of years as reflected in various LTE releases and then look ahead at what to expect in the future. Fully illustrated throughout and with an accompanying website including Matlab code for simulating heterogeneous networks, LTE channel models, and References to 3GPP specifications, contributions, and updates on recent standardization activities. The authors, being involved in LTE standardization, are well placed to give an excellent view on this topic, including valuable background and design rationale. A comprehensive summary of wireless communications theory and practical developments in LTE heterogeneous networks. Authors are experts in this field and are active members in standardization proceedings, enabling up-to-date coverage of current developments Multiple case studies explain network design optimization of various heterogeneous network deployments. Accompanying website includes Matlab code for simulating heterogeneous networks, LTE channel models, and References to 3GPP specifications, contributions, and updates on recent standardization activities Essential reading for Engineers and practitioners in wireless industry.

This SpringerBrief provides an in-depth look at the key issues that affect the performance of heterogeneous networks and presents schemes that can effectively tackle these issues. In particular, this book discusses unbalanced traffic load among the macro and micro Base Stations (BSs) caused by the transmit power disparity, and a load-balancing based mobile association scheme to balance the traffic load among the macro and micro BSs. This book also introduces a fractional frequency reuse (FFR) scheme with proper power control to help reduce interference at the UEs which are most vulnerable to such intra-cell interference. The last section investigates radio resource allocation issues for heterogeneous networks with cooperative relays, and proposes a resource allocation framework that could achieve proportional fairness among the UEs. Numerical results are provided to demonstrate the effectiveness of the proposed solutions in tackling the problem and improving network performance. Resource Management for Heterogeneous Networks in LTE-A Systems is designed for researchers and professionals working in networking and resource management. The content is also valuable for advanced-level students in computer science and electrical engineering.

This brief investigates the role of interference management in Heterogeneous Networks (Het Nets), focusing on cognitive approaches and the use of beamforming. Key concepts of Het Nets are introduced and different deployment strategies are examined, such as sharing the same frequency band of the macro cells or using new high frequency bands. Particular attention is devoted to co-channel deployment and to the problem of interference management, addressing various strategies that can be adopted to handle the interference between the cells. In addition, the brief explores cognitive small cells which are able to avoid or limit interference by using suitable beamforming and resource allocation schemes. The suggested solutions are supported by numerical results in terms of performance evaluations and comparisons.

This book discusses several exciting research topics and applications in the intelligent Heterogenous Networks (Het-Net) and Internet of Things (IoT) era. We are resolving significant issues towards realizing the future vision of the Artificial Intelligence (AI) in IoT-enabled spaces. Such AI-powered IoT solutions will be employed in satisfying critical conditions towards further advances in our daily smart life. This book overviews the associated issues and proposes the most up to date alternatives. The objective is to pave the way for AI-powered IoT-enabled spaces in the next generation Het-Net technologies and open the door for further innovations. The book presents the latest advances and research into heterogeneous networks in critical IoT applications. It discusses the most important problems, challenges, and issues that arise when designing real-time intelligent heterogeneous networks for diverse scenarios.

"This detailed, up-to-date introduction to heterogeneous cellular networking introduces its characteristic features, the technology underpinning it, and the issues surrounding its use. Comprehensive and in-depth coverage of core topics catalogs the most advanced, innovative technologies used in designing and deploying heterogenous cellular networks, including system-level simulation and evaluation, self-organization, range expansion, cooperative relaying, network MIMO, network coding, and cognitive radio. Practical design considerations and engineering tradeoffs are also discussed in detail, including handover management, energy efficiency, and interference management techniques. A range of real-world case studies, provided by industrial partners, illustrates the latest trends in heterogenous cellular network development. Written by leading figures from industry and academia, this is an invaluable resource for all researchers and practitioners working in the field of mobile communications"--