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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
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Proceedings ArticleDOI
19 Dec 2014
TL;DR: A real-time adaptive resource allocation algorithm considering the end user's Quality of Experience (QoE) in the context of video streaming service is presented and the result is compared with the most commonly existing scheduling methods.
Abstract: A real-time adaptive resource allocation algorithm considering the end user's Quality of Experience (QoE) in the context of video streaming service is presented in this work. An objective no-reference quality metric, namely Pause Intensity (PI), is used to control the priority of resource allocation to users during the scheduling process. An online adjustment has been introduced to adaptively set the scheduler's parameter and maintain a desired trade-off between fairness and efficiency. The correlation between the data rates (i.e. Video code rates) demanded by users and the data rates allocated by the scheduler is taken into account as well. The final allocated rates are determined based on the channel status, the distribution of PI values among users, and the scheduling policy adopted. Furthermore, since the user's capability varies as the environment conditions change, the rate adaptation mechanism for video streaming is considered and its interaction with the scheduling process under the same PI metric is studied. The feasibility of implementing this algorithm is examined and the result is compared with the most commonly existing scheduling methods.

6 citations

Proceedings ArticleDOI
06 May 2012
TL;DR: An improved dynamic MaxPRB-adjusting scheduling scheme (DDS) based on user SINR dispersion degree, which can win better tradeoff between throughput and user fairness in LTE downlink is proposed.
Abstract: The max C/I, Round Robin (RR) and Proportion Fair (PF) are three primary scheduling schemes adopted by LTE system to allocate shared resources among users in the time-frequency domain. However, most of the scheduling methods are static and ignore the relation between user dispersion degree of the sector and maximum PRB number (MaxPRB) allocated to one user. In this paper, we propose an improved dynamic MaxPRB-adjusting scheduling scheme (DDS) based on user SINR dispersion degree, which can win better tradeoff between throughput and user fairness in LTE downlink. Simulation results show that the proposed scheme will adjust the MaxPRB according to user SINR dispersion degree of the sector to obtain a good balance between sector throughput and user fairness.

6 citations


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

  • ...(3) Where Ri is the instantaneous data rate for user i [8]....

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  • ...The average rate is calculated over a certain averaging period [8]....

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Proceedings ArticleDOI
01 Dec 2016
TL;DR: A Pricing Class based Resource Allocation Scheme (PCRAS) that considers the price of multicast group and uses channel quality indicator to compute resource allocation priority to dispatch resource blocks efficiently is proposed.
Abstract: How to efficiently use the limited wireless bandwidth is of paramount important in the radio wireless network area. To use the wireless bandwidth in an efficiently way, one can consider a pricing model to improve users received video layers. In this paper, the users are divided into three classes. For different class users, they pay different price and enjoy different QoS. In a pricing model, more video layers are allocated to those users who pay a higher price. We propose a Pricing Class based Resource Allocation Scheme (PCRAS) that considers the price of multicast group and uses channel quality indicator to compute resource allocation priority to dispatch resource blocks efficiently. Experimental results shows that the proposed scheme can increase users' received video layers and users between different classes will receive different level of services. In comparison to other existing scheduling schemes, the proposed scheme can improve users' video experience.

6 citations


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

  • ...This service is named Evolved Multimedia Broadcast/Multicast Service (eMBMS) [2]....

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Posted Content
TL;DR: In this article, the authors discuss the integration of RLNC into the 5G NR standard, building upon the ideas and opportunities identified in 4G LTE, and explicitly identify and discuss in detail novel 5GNR features that provide support for RLNC-based video delivery in 5G.
Abstract: An exponential increase in mobile video delivery will continue with the demand for higher resolution, multi-view and large-scale multicast video services. Novel fifth generation (5G) 3GPP New Radio (NR) standard will bring a number of new opportunities for optimizing video delivery across both 5G core and radio access networks. One of the promising approaches for video quality adaptation, throughput enhancement and erasure protection is the use of packet-level random linear network coding (RLNC). In this review paper, we discuss the integration of RLNC into the 5G NR standard, building upon the ideas and opportunities identified in 4G LTE. We explicitly identify and discuss in detail novel 5G NR features that provide support for RLNC-based video delivery in 5G, thus pointing out to the promising avenues for future research.

6 citations

Proceedings ArticleDOI
27 Jun 2016
TL;DR: This work considers mobility management and channel heterogeneity jointly in CR femtocell networks for the first time, and proposes an adaptive HO-threshold selection scheme combined with the proposed mobility management scheme by taking the interference from PUs and neighboring femtocells into account.
Abstract: Combining femtocell networks and cognitive radio (CR) technology is one of the most promising solutions to offload emerging traffic from cellular networks. Mobility management is an essential function to support traffic offloading in heterogeneous networks. In traditional femtocell networks, numerous solutions have been proposed to support mobility. However, in CR femtocell networks, the mobility management issue remains unexplored. More importantly, due to the channel heterogeneity in CR femtocell networks, some unique challenges of channel under-utilization and interference are introduced. Although channel heterogeneity is considered for spectrum handoff and spectrum sharing in pure CR networks, the impact of channel heterogeneity on mobility management is never addressed in CR femtocell networks. In this paper, we propose a mobility management scheme for both macro-to-femto and femto-to-macro handoffs while taking channel heterogeneity into account. Additionally, we propose an adaptive HO-threshold selection scheme combined with our proposed mobility management scheme by taking the interference from PUs and neighboring femtocells into account. An analytical model is proposed to calculate the interference. Simulation results show significant performance improvement of the proposed mobility management scheme. To the best of our knowledge, this is the first work that considers mobility management and channel heterogeneity jointly in CR femtocell networks.

6 citations