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IP and Mobile Trends and Education

 

LAA

01.2019

LTE in Unlicensed Spectrum

The “history” of 3GPP system “entering” the unlicensed spectrum regime seems to happened already a long time ago. Tight LTE interworking with WiFi is one way for the MNOs to offload traffic. The other one, discussed within this blogpost, is based on a specialized design of LTE system to be able to cope with ISM/license exempt bands’ special requirements e.g., fair coexistence with other users of this spectrum (e.g. Legacy WiFi).

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10.2017

What are the practical aspects of LTE, LTE-Advanced Pro and 5G? – A new book.

This book guides you through the LTE, LTE-Advanced Pro and 5G from the perspective of practical aspects of air interface, RAN, Core Network and end-to-end data transfer. The practical approach is reflected by the angle of system design, link budget process, network planning, parameter configurations and optimizations together with the required tradeoffs. We also evaluate the different features’ impact on the overall system as it evolves from LTE to LTE-Advanced and then going further to LTE-Advanced Pro and 5G.

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08.2017

3GPP Release-15, Part 2: LTE and 5G Study Items

With this blogpost, we continue our discussion on the latest Study Items (SI) which are being worked on in 3GPP Rel-15[1,2]. We posted a similar article in April 2017 on our blog 3GPP Release-15: Further LTE Enhancements and 5G Normative Work Kick-off (do check it out if you haven’t already), and this post will add to the Work Items already discussed in the previous one and will present the latest studies on the LTE enhancements and 5G.

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04.2017

3GPP Release-15: Further LTE Enhancements and 5G Normative Work Kick-off

LTE-Advanced Pro1 was defined within Rel-13, but the standardization didn’t stop there. Further enhancements have been introduced in Rel-14 and recently started Rel-15. In parallel to LTE evolution, both releases initialized, the first set of study and work items towards 5G.  While Rel-14 focused solely on 5G study items, the normative work for the first […]

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03.2017

“3GPP Spectrum Access Evolution Towards 5G” – a survey paper co-authored by Grandmetric

The survey article co-authored by Grandmetric and Movilo, “3GPP Spectrum Access Evolution Towards 5G“, Michal Szydelko and Marcin Dryjanski [1], presents the evolution of: EUTRA frequency bands, Spectrum aggregation mechanisms, Spectrum licensing, Duplexing schemes, Spectrum sharing, Spectrum refarming techniques, within 3GPP, with the focus on LTE-Advanced Pro [2] and beyond. Note: this article reflects the […]

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02.2017

LTE-Advanced Pro and Unlicensed Spectrum

LTE operation in unlicensed spectrum is not limited to its aggregation with WiFi (like with LWA, LWIP and RCLWI)¹. Another approach to utilize the unlicensed spectrum combined with the MNO-controlled LTE networks is based on a specialized version of LTE system designed to cope with the unlicensed spectrum’s requirements. This is referred to as Licensed […]

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04.2016

LTE-Advanced Pro – what is this?

  As 3GPP Rel-13 has been already frozen (with the exception of Narrow Band IoT), the time has come to provide an overview for the evolved LTE under the name of LTE-Advanced Pro. As already mentioned in one of the previous articles (LTE evolution: from LTE, via LTE-Advanced, towards LTE-Advanced Pro), LTE-Advanced Pro is a […]

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12.2015

LTE evolution: from LTE, via LTE-Advanced, towards LTE-Advanced Pro

  In this article I’m sharing a short overview of the LTE evolution, starting with its introduction within 3GPP Release 8 back in early 2009 up to LTE-Advanced Pro to be finalized in March 2016 within Release 13[1]. Timeline, main features and a maximum throughput calculation is provided for each of the evolution steps.   […]

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10.2015

HetNet challenges with an outlook towards 5G

Booming mobile data demand observed in cellular networks all over the world and forecasted by various studies (e.g. Cisco VNI[1]), driven by the increasingly growing availability of wide range of data-hungry mobile devices, is commonly considered as the main driver for mobile networks evolution Towards 5G. It’s not only the smartphones, tablets and/or phablets with […]

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