scispace - formally typeset
Search or ask a question
Book

4G: LTE/LTE-Advanced for Mobile Broadband

TL;DR: In this article, the authors focus on LTE with full updates including LTE-Advanced to provide a complete picture of the LTE system, including the physical layer, access procedures, broadcast, relaying, spectrum and RF characteristics, and system performance.
Abstract: Based on the bestseller "3G Evolution - HSPA and LTE for mobile broadband" and reflecting the ongoing success of LTE throughout the world, this book focuses on LTE with full updates including LTE-Advanced to provide a complete picture of the LTE system. Overview and detailed explanations are given for the latest LTE standards for radio interface architecture, the physical layer, access procedures, broadcast, relaying, spectrum and RF characteristics, and system performance. Key technologies presented include multi-carrier transmission, advanced single-carrier transmission, advanced receivers, OFDM, MIMO and adaptive antenna solutions, advanced radio resource management and protocols, and different radio network architectures. Their role and use in the context of mobile broadband access in general is explained. Both a high-level overview and more detailed step-by-step explanations of the LTE/LTE-Advanced implementation are given. An overview of other related systems such as GSM/EDGE, HSPA, CDMA2000, and WIMAX is also provided. This book is a 'must-have' resource for engineers and other professionals in the telecommunications industry, working with cellular or wireless broadband technologies, giving an understanding of how to utilize the new technology in order to stay ahead of the competition. The authors of the book all work at Ericsson Research and have been deeply involved in 3G and 4G development and standardisation since the early days of 3G research. They are leading experts in the field and are today still actively contributing to the standardisation of LTE within 3GPP. Includes full details of the latest additions to the LTE Radio Access standards and technologies up to and including 3GPP Release 10Clear explanations of the role of the underlying technologies for LTE, including OFDM and MIMO Full coverage of LTE-Advanced, including LTE carrier aggregation, extended multi-antenna transmission, relaying functionality and heterogeneous deploymentsLTE radio interface architecture, physical layer, access procedures, MBMS, RF characteristics and system performance covered in detail
Citations
More filters
Journal ArticleDOI
TL;DR: A novel three-phases non-orthogonal multiple access (NOMA)-based spectrum sharing strategy between multi-user MIMO (MU-MIMO) communication (comm) systems and collocated MIMo radars is proposed.

18 citations

Proceedings ArticleDOI
01 Aug 2018
TL;DR: This contribution studies the performance of the two named technologies in a real-world road traffic scenario through comprehensive simulations and proves that both technologies work stable at moderate road traffic conditions but have significant differences in the quantified communication parameters.
Abstract: In recent years, two candidates for vehicular communications have evolved for the support of road safety and traffic efficiency applications. On the one hand, ad-hoc networks exist based on the ITS-G5/802.11p protocol stack, and on the other hand, there are cellular network infrastructures based on an extended LTE stack, which we refer to as Cellular-based Vehicular Communication Systems (Cellular-VCS). The most important extension of the classical LTE stack is a direct link among vehicles which is also called Device-to-Device (D2D) communication. Both approaches meet the requirements on vehicular communications but show technology-inherent mechanisms that result in different performances. ITS-G5 features a small latency at a small network load whereas Cellular-VCS promises a highly reliable packet transmission. One of the main difference of both approaches lies in the channel access which is random-based for ITS-G5 and centrally scheduled for Cellular-VCS. This contribution studies the performance of the two named technologies in a real-world road traffic scenario through comprehensive simulations. The simulation scenario makes use of real road traffic density measurements for modeling the mobility of the vehicles. Mixed network data traffic of periodically and event-based messages is generated through particular generation rules. The results prove that both technologies work stable at moderate road traffic conditions but have significant differences in the quantified communication parameters.

18 citations


Cites methods from "4G: LTE/LTE-Advanced for Mobile Bro..."

  • ...Cellular-VCS protocol with LTE protocol architecture based on [9]....

    [...]

Journal ArticleDOI
TL;DR: The proposed DRXB scheme is designed to avoid unnecessary energy-and-time-consuming beam-training procedures, which enables longer sleep periods and shorter wake-up latency and an analytical model is provided to investigate the receiver-side energy efficiency and transmission latency of the proposed scheme.
Abstract: Discontinuous reception (DRX) techniques have successfully been proposed for energy savings in 4G radio access systems, which are deployed on legacy 2GHz spectrum bands with signal features of omni ...

18 citations


Cites background or methods or result from "4G: LTE/LTE-Advanced for Mobile Bro..."

  • ...Still data traffic often exhibits highly busty behavior which means a short period of transmission is normally followed by a long period of silence [5]....

    [...]

  • ...) is chosen to be 1ms, which is the length of a subframe in LTE [5] and also in many new radio access technologies being actively discussed in current standardization activities [17], [18]....

    [...]

  • ...The direct comparison between our proposed DRXB scheme and the legacy DRX scheme of LTE [5] is not meaningful, since the legacy DRX scheme designed for LTE does no have policy coping with the beam misalignment problem in multiple-beam communication systems....

    [...]

  • ...To improve the energy efficiency of the Rx, the discontinuous reception (DRX) strategy [5], [6] has been introduced into the LTE system to relieve the mobile receivers from having to continuously monitor the downlink control channel....

    [...]

Journal ArticleDOI
TL;DR: A hybrid periodic-random massive access (HPRMA) scheme for wireless clinical networks employing ultra-narrow band (UNB) techniques is proposed and demonstrates the superiority of the proposed HPRMA scheme over baseline schemes including time-division multiple access (TDMA) and random access approach, in terms of channel utilization efficiency, packet drop ratio, etc., for the support of massive devices’ services.
Abstract: The prosperity of e-health is boosted by fast development of medical devices with wireless communications capability such as wearable devices, tiny sensors, monitoring equipments, etc., which are randomly distributed in clinic environments. The drastically-increasing population of such devices imposes new challenges on the limited wireless resources. To relieve this problem, key knowledge needs to be extracted from massive connection attempts dispersed in the air towards efficient access control. In this paper, a hybrid periodic-random massive access (HPRMA) scheme for wireless clinical networks employing ultra-narrow band (UNB) techniques is proposed. In particular, the proposed scheme towards accommodating a large population of devices include the following new features. On one hand, it can dynamically adjust the resource allocated for coexisting periodic and random services based on the traffic load learned from signal collision status. On the other hand, the resource allocation within periodic services is thoroughly designed to simultaneously align with the timing requests of differentiated services. Abundant simulation results are also presented to demonstrate the superiority of the proposed HPRMA scheme over baseline schemes including time-division multiple access (TDMA) and random access approach, in terms of channel utilization efficiency, packet drop ratio, etc., for the support of massive devices' services.

18 citations


Cites background from "4G: LTE/LTE-Advanced for Mobile Bro..."

  • ...First, the fundamental applications in clinic wireless networks carry low-rate services and the entire network is subject to a huge amount of concurrent transmissions, while the popular wireless network standards, such as LTE-A [4] and 802.11x series [5], pursue mainly high-rate transmission and can effectively support only a limited number of nodes....

    [...]

  • ...in clinic wireless networks carry low-rate services and the entire network is subject to a huge amount of concurrent transmissions, while the popular wireless network standards, such as LTE-A [4] and 802....

    [...]

  • ...Among diverse potential solutions [8–12], the most ready one is the machinetype-communications (MTC) enabled LTE-A networks [8, 10–12], also called machine to machine (M2M) networks, because this architecture is built upon the existing cellular networks covering wide range and aims at accommodating massive access nodes with low-rate services....

    [...]