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3G Evolution : HSPA and LTE for Mobile Broadband

TL;DR: In this paper, the authors present a very up-to-date and practical book, written by engineers working closely in 3GPP, gives insight into the newest technologies and standards adopted by threeGPP with detailed explanations of the specific solutions chosen and their implementation in HSPA and LTE.
Abstract: This very up-to-date and practical book, written by engineers working closely in 3GPP, gives insight into the newest technologies and standards adopted by 3GPP, with detailed explanations of the specific solutions chosen and their implementation in HSPA and LTE. The 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 HSPA and LTE implementation are given. An overview of other related systems such as TD SCDMA, CDMA2000, and WIMAX is also provided.This is a 'must-have' resource for engineers and other professionals working with cellular or wireless broadband technologies who need to know how to utilize the new technology to stay ahead of the competition.The authors of the book all work at Ericsson Research and are deeply involved in 3G 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 both HSPA and LTE within 3GPP. * Gives the first explanation of the radio access technologies and key international standards for moving to the next stage of 3G evolution: fully operational mobile broadband* Describes the new technologies selected by the 3GPP to realise High Speed Packet Access (HSPA) and Long Term Evolution (LTE) for mobile broadband * Gives both higher-level overviews and detailed explanations of HSPA and LTE as specified by 3GPP
Citations
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Journal ArticleDOI
TL;DR: A flexible and fairness-oriented packet scheduling approach for 3GPP UTRAN long term evolution (LTE) type packet radio systems, building on the ordinary proportional fair (PF) scheduling principle and channel quality indicator (CQI) feedback is proposed.
Abstract: In this paper, we propose a flexible and fairness-oriented packet scheduling approach for 3GPP UTRAN long term evolution (LTE) type packet radio systems, building on the ordinary proportional fair (PF) scheduling principle and channel quality indicator (CQI) feedback. Special emphasis is also put on practical feedback reporting mechanisms, including the effects of mobile measurement and estimation errors, reporting delays, and CQI quantization and compression. The performance of the overall scheduling and feedback re-porting process is investigated in details, in terms of cell throughput, coverage and resource allocation fairness, by using extensive quasistatic cellular system simulations in practical OFDMA system environment with frequency reuse of 1. The performance simulations show that by using the proposed modified PF ap-proach, significant coverage improvements in the order of 50% can be obtained at the expense of only 10-15% throughput loss, for all reduced feedback reporting schemes. This reflects highly improved fairness in the radio resource management (RRM) compared to other existing schedulers, without essentially com-promising the cell capacity. Furthermore, we demonstrate the improved functionality increase in radio re-source management for UE’s utilizing multi-antenna diversity receivers.

8 citations


Cites background or methods from "3G Evolution : HSPA and LTE for Mob..."

  • ...Even though this does not take the exact sub-band condition into account at re-transmission stage, the practical implementation is simplified, in terms of control signalling, and re-transmissions anyway always benefit from the HARQ combining gain [6]....

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  • ...Within each time window of length tr, each mobile sends channel quality indicator (CQI) reports to BS, formatted and possibly compressed, with a reporting delay of td seconds [6,8,10,11]....

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  • ..., [6] and the references therein) Table 2....

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Journal ArticleDOI
TL;DR: This paper proposes to exploit the under-utilised femtocells to serve the high data rate requests of many outdoor user equipments and reduce the probability of their outage, to extend the coverage of femtocell and relax the burden on the macrocell base station.
Abstract: Femtocell, also known as home base station is one of the promising cost-effective technologies that ensure a steady increase in system capacity, improvement in service quality and a better data rate for users mainly in the indoor environment. However massive rollout of femtocells cause severe interference to the existing macrocell network and drive users into outage. Moreover, though femtocells can provide improved home coverage and capacity for indoor users, many a times, these femtocells are under-utilised when they do not serve any voice or data request. In this paper a novel idea to extend the coverage of femtocells beyond the home environment through multiple hops is proposed. The idea is to exploit the under-utilised femtocells to serve the high data rate requests of many outdoor user equipments and reduce the probability of their outage. This will not only extend the coverage of femtocell and relax the burden on the macrocell base station, but also helps in reducing the interference to the co-existing macrocell network, because of reduced transmission power and path loss, achieved through relaying.

8 citations

Journal ArticleDOI
TL;DR: The hardware design and integration of a joint data-aided maximum likelihood (DA) SNR and Doppler spread estimator recently shown to outperform main state-of-the-art solutions both in terms of accuracy and complexity are tackled.
Abstract: In a multi-connected, multi-technology, and pervasive mobile infrastructure, such as what is being planned for 5G, artificial intelligence and cognition will play a major role. An important goal of future mobile infrastructures is to self-adapt their characteristics to their operating conditions, at the physical link, as well as at the network and application layers, which gives rise to a new paradigm known as context-aware cognitive radio (CR). CR transceivers (CTRs) mostly incorporate a cognitive engine that relies on various sensorial entities, which attempt to provide sufficient information about the quality of the link through the estimation of various key channel parameters. Two important parameters are required in a wide range of CTR architectures: the signal-to-noise ratio (SNR) and the Doppler spread. Within this context, we tackle the hardware design and integration of a joint data-aided (DA) maximum likelihood (ML) SNR and Doppler spread estimator recently shown to outperform main state-of-the-art solutions both in terms of accuracy and complexity. We propose a deep-pipelined and resource-efficient architecture for the outlined joint DA ML estimator, and we integrate our design on an FPGA-based software-defined radio (SDR) platform. We finally validate and test this prototype in real time under realistic over-the-air propagation conditions reproduced by a highly-scalabile channel emulator. Compared to its MATLAB floating-point version, our hardware prototype suggests negligible losses in performance despite the existence of several hardware impairments, thereby confirming its very strong potential and attractiveness for possible integration in future 5G CTRs.

8 citations


Cites background from "3G Evolution : HSPA and LTE for Mob..."

  • ...In a high-speed railway, for instance, the maximum mobile velocity can reach v = 500 km/h [37]....

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Proceedings ArticleDOI
25 Jul 2016
TL;DR: The proposed scheduling algorithm, which is called Modified-Earliest Due Date (M-EDD), achieves higher bitrate for the RT applications and provides the lowest Packet Loss ratio for RT multimedia services.
Abstract: In this paper we introduce and asses the performance of a new scheduling algorithm based on Earliest Due Date (EDD) mechanism. Our proposed scheduling algorithm enhances the performance of Real-Time (RT) flows such as video and Voice Over Internet Protocol (VOIP) in Long Term Evolution (LTE) cellular networks especially in downlink. The proposed scheduling scheme provides the lowest Packet Loss Ratio (PLR) for RT multimedia services, this can be achieved by taking the expiration time of the head of line packets of users' queues into account. Also, the proposed scheduling algorithm which we call Modified-Earliest Due Date (M-EDD), achieves higher bitrate for the RT applications. Especially for the video traffic, results have remarkably demonstrated that the M-EDD scheduling algorithm has the capacity to clearly outperform the conventional scheduling schemes.

8 citations


Cites background from "3G Evolution : HSPA and LTE for Mob..."

  • ...A practical scheduler performs the allocation of all available resources among different active UEs in cellular systems based on several scheduling strategies, for example, the characteristics of the channel, the past average data rate, and the time delay of the packets [11],[12]....

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