Design, Deployment and Performance of 4G-LTE Networks: A by Ayman ElNashar

By Ayman ElNashar

Layout, Deployment and function of 4G-LTE Networks addresses the foremost functional facets and top perform of 4G networks layout, functionality, and deployment. additionally, the e-book specializes in the end-to-end features of the LTE community structure and various deployment situations of business LTE networks. It describes the air interface of LTE concentrating on the entry stratum protocol layers: PDCP, RLC, MAC, and actual Layer. The air interface defined during this publication covers the options of LTE body constitution, downlink and uplink scheduling, and targeted illustrations of the knowledge stream around the protocol layers. It describes the main points of the optimization procedure together with functionality measurements and troubleshooting mechanisms as well as demonstrating universal concerns and case experiences in accordance with real box effects. The publication presents unique functionality research of key features/enhancements resembling C-DRX for Smartphones battery saving, CSFB method to aid voice calls with LTE, and MIMO concepts.

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2014 John Wiley & Sons, Ltd. Published 2014 by John Wiley & Sons, Ltd. Design, Deployment and Performance of 4G-LTE Networks 2 • • • • the existing GSM communication core network (CN) but with a totally new radio access technology (RAT) in the form of WCDMA. Its radio access is based on FDD (frequency division duplex). 1 GHz bands. Deployments at lower frequencies are also possible, such as UMTS900. UMTS supports voice and multimedia services. TD-CDMA (time division multiple access) – This is typically referred to as UMTS TDD (time division duplex) and is part of the UMTS specifications.

The basis for the interworking between a VLR and an MME is the existence of an SGs association between those entities per UE. The SGs association is only applicable to UEs with CS fallback capability activated. The behavior of the VLR and the MME entities related to the SGs interface is defined by the state of the SGs association for a UE. Individual states per SGs association, that is, per UE with CS fallback capability activated, are held at both the VLR and the MME. Chapter 4 provides more details on CSFB and it is performance.

3 3GPP Release 5 Release 5 is the first major addition to the UMTS air interface. It adds HSDPA (high speed downlink packet access) to improve capacity and spectral efficiency. The goal of HSDPA in the 3GPP roadmap was to improve the end-user experience and to keep up with the evolution taking place in non-3GPP technologies. During the time when HSDPA was being developed, the increasing interest in mobile-based services demanded a significant improvement in the air interface of the UMTS system.

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