Book•
4G: LTE/LTE-Advanced for Mobile Broadband
21 Mar 2011-
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
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Journal Article•
TL;DR: Spectrum sharing and coexistence scenarios of the 4th generation networks in the band (2500-2690) MHz are addressed and Interferences from Long Term Evolution to Worldwide Interoperability for Microwave Access (WiMAX) systems and vice versa are carefully investigated.
Abstract: Lots of fourth generation (4G) wireless networks are currently being deployed globally with similar or with dissimilar technologies in various operating bands. In this paper, spectrum sharing and coexistence scenarios of the 4th generation networks in the band (2500-2690) MHz are addressed. Interferences from Long Term Evolution (LTE) to Worldwide Interoperability for Microwave Access (WiMAX) systems and vice versa are carefully investigated. The collocation and coexistence requirements in terms of separation requirements as well as additional isolations are fully addressed. Interference measures of the two systems as functions of adjacent channel interference power ratios are also considered. Finally, the impact of deployment morphologies of the two systems is accounted for by catering for losses due to surrounding clutter.
5 citations
Cites background from "4G: LTE/LTE-Advanced for Mobile Bro..."
...Furthermore, additional coexistence requirements for the two different systems to coexist when existing isolation measures are no more viable are discussed in subsection 7.3....
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01 May 2014
TL;DR: Thesis (Ph.D, Electrical & Computer Engineering) -- Queen's University, 2014-04-30 06-15:34.31
Abstract: Thesis (Ph.D, Electrical & Computer Engineering) -- Queen's University, 2014-04-30 06:15:34.31
5 citations
Cites background from "4G: LTE/LTE-Advanced for Mobile Bro..."
...A dedicated LTE Positioning Protocol (LPP) is also devised to coordinate signaling between the User Equipment (UE) and the BS [13]....
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17 Dec 2015
TL;DR: It is envisaged that quality of call measured through Mean Opinion Score (MOS) is always better in LTE compared with WCDMA layer, so maximizing the voice call duration in LTE layer is recommended through SRVCC serving cell threshold optimization.
Abstract: This paper is focused on the mobile networks with deployment of LTE offering Voice over LTE (VoLTE) services and existing WCDMA layer — in which voice call continuity is ensured through the Single Radio Voice Call Continuity (SRVCC) feature. SRVCC feature enables handover of voice call in LTE to WCDMA layer when users enter poor LTE coverage area. In this paper, it is envisaged that quality of call measured through Mean Opinion Score (MOS) is always better in LTE compared with WCDMA layer. Due to better call quality, maximizing the voice call duration in LTE layer is recommended through SRVCC serving cell threshold optimization. In order to properly set the optimal SRVCC threshold setting, radio condition at which uplink block error rate (UL BLER) increasing higher than 10% and the acknowledgement rate (ACK Rate) degrading below 90% is evaluated. The Transmission Time Interval (TTI) bundling feature improving the uplink VoLTE coverage is also taken into consideration. This paper proposes serving cell SRVCC threshold RSRP = −108dBm for networks without TTI bundling and RSRP = −117dBm for networks with TTI bundling deployment.
5 citations
Cites background from "4G: LTE/LTE-Advanced for Mobile Bro..."
...There is no specified error rate for PHICH acknowledgment and it is up to network operators to decide on the value [10]....
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...The activation of TTI bundling is triggered by UE’s uplink limited power condition [10] – UE reports power headroom (PHR) and PL condition....
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TL;DR: It is proved that the low-frequency behaviour of the video data belongs to the class of quasiperiodic processes and can be easily generalized to other kinds of compressed two-dimensional streams, whatever be the adopted algorithm, the compression degree, video resolution and format.
Abstract: This work proposes a novel methodology to describe the low-frequency behaviour of compressed 3D video streams, i.e., their average fluctuations on longer timescales. This study is innovative for two reasons. First, it proves that the low-frequency behaviour of the video data belongs to the class of quasiperiodic processes. Second, it proposes an innovative approach to describe the long-term behaviour through a set of parameters directly derived from the quasiperiodic analysis. Reported results show that the proposed approach is effective in a wide variety of simulation scenarios. Furthermore, it can be easily generalized to other kinds of compressed two-dimensional (2D) streams, whatever be the adopted algorithm, the compression degree, video resolution and format. This opens new unexplored possibilities in the field of 3D video characterization, identification and classification.
5 citations
Cites background from "4G: LTE/LTE-Advanced for Mobile Bro..."
...Processing the information associated to multimedia three-dimensional (3D) videos is becoming more and more an attractive issue in current scientific literature due to the fast development of last-generation (wireless and wired) networks and technologies [7]....
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TL;DR: This work proposes to use the constrained application protocol (CoAP) and specify a real-time flow repair (RFR) service based on CoAP in the cellular networks and describes the architecture to provide such a service.
Abstract: Watching television on a portable device is possible on broadcast and cellular systems. With broadcast technologies, due to the absence of a feedback channel it is not possible to guarantee an error free reception at the receivers. With cellular technologies, the transmission is based on unicast and the same content is transmitted as many times as the number of people who are watching the same program in the cell. We propose to combine both technologies and consider the concept of repairing a broadcast data flow for dual-mode (cellular and broadcast) smartphones in real time in order to ensure a better quality of service. We propose to use the constrained application protocol (CoAP) and specify a real-time flow repair (RFR) service based on CoAP in the cellular networks. We describe the architecture to provide such a service. We analyze the load generated in the cellular radio access network due to the retransmission of the packets lost on the broadcast system and also develop a model for the evaluation of the residual errors in the RFR operations.
5 citations
Cites background from "4G: LTE/LTE-Advanced for Mobile Bro..."
...According to [42] for the typical macrocells ISD = 1....
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