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This book constitutes the thoroughly refereed post-conference
proceedings of the 6th International ICST Conference on Mobile
Multimedia Communications (MOBIMEDIA 2010) held in Lisbon,
Portugal, in September 2010, which was accompanied by the First
International Workshop on Cognitive Radio and Cooperative
Strategies for POWER Saving (C2POWER 2010), the Workshop on Impact
of Scalable Video Coding on Multimedia Provisioning (SVCVision
2010), and the First International Workshop on Energy-efficient and
Reconfigurable Transceivers (EERT 2010). The 59 revised full papers
presented were carefully reviewed and selected from numerous
submissions and are organized in topical sections on advanced
techniques for video transmission; multimedia distribution;
modelling of wireless systems; cellular networks; mobility concepts
for IMT-advances (MOBILIA); media independent handovers
(MIH-4-MEDIA); and IP-based emergency applications and services for
next generation networks (PEACE).
This book tackles the 6G odyssey, providing a concerted technology
roadmap towards the 6G vision focused on the interoperability
between the wireless and optical domain, including the benefits
that are introduced through virtualization and software defined
radio. The authors aim to be at the forefront of beyond 5G
technologies by reflecting the integrated works of several major
European collaborative projects (H2020-ETN-SECRET, 5GSTEPFWD, and
SPOTLIGHT). The book is structured so as to provide insights
towards the 6G horizon, reporting on the most recent developments
on the international 6G research effort. The authors address a
variety of telecom stakeholders, which includes practicing
engineers on the field developing commercial solutions for 5G and
beyond products; postgraduate researchers that require a basis on
which to build their research by highlighting the current
challenges on radio, optical and cloud-based networking for
ultra-dense networks, including novel approaches; and project
managers that could use the principles and applications for shaping
new research proposals on this highly dynamic field.
This book tackles the 6G odyssey, providing a concerted technology
roadmap towards the 6G vision focused on the interoperability
between the wireless and optical domain, including the benefits
that are introduced through virtualization and software defined
radio. The authors aim to be at the forefront of beyond 5G
technologies by reflecting the integrated works of several major
European collaborative projects (H2020-ETN-SECRET, 5GSTEPFWD, and
SPOTLIGHT). The book is structured so as to provide insights
towards the 6G horizon, reporting on the most recent developments
on the international 6G research effort. The authors address a
variety of telecom stakeholders, which includes practicing
engineers on the field developing commercial solutions for 5G and
beyond products; postgraduate researchers that require a basis on
which to build their research by highlighting the current
challenges on radio, optical and cloud-based networking for
ultra-dense networks, including novel approaches; and project
managers that could use the principles and applications for shaping
new research proposals on this highly dynamic field.
This book is an overview of the most relevant collision resolution
algorithms used in contention-based multiple access protocols to
handle collisions among users contending for channel access. The
two main categories of collision resolution algorithms are the so
called back-off and the splitting algorithms. The described
back-off algorithms are further classified into p-persistent,
binary exponential, X-Increase Y-Decrease and dynamic optimum
back-off window algorithms. On the other hand, the splitting
algorithms are basically characterised as gated-access,
window-access and free-access. The dynamic tree algorithm and some
limited sensing algorithms are also discussed. Other proposals that
cannot be classified in the previous categories are also presented.
Finally, examples of MAC protocols for wireless communications that
make use of some of the aforementioned collision resolution
algorithms are included.
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