Book•
3G Evolution : HSPA and LTE for Mobile Broadband
31 Jul 2007-
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
More filters
Proceedings Article•
27 Apr 2011TL;DR: It is shown how a simple method which balances the code rate on a per-segment basis can improve the overall block error ratio performance.
Abstract: In this paper, we compare the performance of the LTE rate matcher for different code rates when segmentation occurs. We present that, for certain cases of segmentation where the different segments are of dissimilar size, the rate applied to each segment may be different and thus degraded overall performance may occur. We show how a simple method which balances the code rate on a per-segment basis can improve the overall block error ratio performance. The whole simulation environment together with the results of this paper are made available for download at our homepage.
15 citations
Cites methods from "3G Evolution : HSPA and LTE for Mob..."
...In all of these systems, AMC is implemented as a combination of a fixed 1/3 turbo encoder and a rate matching process [4]....
[...]
TL;DR: Results show that the localized subcarrier mapping give lower bit error rate BER than the distributed mode and give different activity under miscellaneous channel cases and its performance will be study under two types of subcarriers mapping.
Abstract: in recent years, wireless communication has experienced a rapid growth and it promises to become a globally important infrastructure. One common design approach in fourth generation 4G systems is Single Carrier Frequency Division Multiple Access (SC-FDMA). It is a single carrier communication technique on the air interface. It has become broadly accepted mainly because of its high resistance to frequency selective fading channels. The third Generation Partnership Project-Long Term Evolution (3GPP-LTE) uses this technique in uplink direction because of its lower peak to average power ratio PAPR as compared to Orthogonal Frequency Division Multiple Access (OFDMA) that is used for downlink direction. In this paper the LTE in general and SCFDMA will be discuss in details and its performance will be study under two types of subcarrier mapping which are localized and distributed mode also within different channel cases. The results show that the localized subcarrier mapping give lower bit error rate BER than the distributed mode and give different activity under miscellaneous channel cases.
15 citations
Cites methods from "3G Evolution : HSPA and LTE for Mob..."
...This interest is justified by the inherent single carrier structure of SCFDMA, which results in reduced sensitivity to phase noise and a lower Peak-to-Average Power Ratio compared to Orthogonal Frequency Division Multiple Access OFDMA [9]....
[...]
...The third Generation Partnership Project-Long Term Evolution (3GPP-LTE) uses this technique in uplink direction because of its lower peak to average power ratio PAPR as compared to Orthogonal Frequency Division Multiple Access (OFDMA) that is used for downlink direction....
[...]
01 Apr 2012
TL;DR: A configurable dual-mode (CD) algorithm is proposed that is able to guarantee queuing delay with low loss of resource utilization and fairness by employing dual- mode scheduling mechanism and it can be configured by three parameters catering to different performance requirements.
Abstract: Long Term Evolution (LTE) has been proposed as a promising radio access technology to bring higher peak data rates and better spectral efficiency. However, scheduling and resource allocation in LTE still face huge design challenges due to their complexity. This paper divides the complex problem into three sub-problems: scheduling pattern, scheduling priority and quantity of scheduled data. Based on analysis of three sub-problems, a configurable dual-mode (CD) algorithm is proposed. CD algorithm is able to guarantee queuing delay with low loss of resource utilization and fairness by employing dual-mode scheduling mechanism. And it can be configured by three parameters catering to different performance requirements. By utilizing QoS Class Identifier (QCI) and Channel Quality Indicator (CQI) defined by LTE, low computation is realized in CD scheduler. Finally, performance evaluation of the proposed scheduler is presented. The results and correlative analysis testify effectiveness of CD algorithm.
15 citations
Cites background from "3G Evolution : HSPA and LTE for Mob..."
...Researchers have proposed a variety of different algorithms considering diversity factors, although the most important objective of LTE scheduling is to achieve an optimal tradeoff between utilization and fairness while satisfying QoS requirements of all users [1]....
[...]
...In fact, classic algorithms Round Robin (RR)[1] and Proportional Fair (PF) [2] are most widely applied owing to their simpleness....
[...]
27 Jun 2016
TL;DR: This work illustrates simple analytical methods to quantify the resource utilization and physical layer control overhead for millimeter wave cellular systems and it is observed that certain flexible frame design choices may lead to dramatically improved resource utilization under various traffic patterns.
Abstract: The MAC layer will need to be significantly redesigned to support the highly directional transmissions, very low latencies and high peak rates featured in 5G millimeter wave communication. This paper analyzes the frame structure and beamforming choices for mmWave MAC layer design. In this work we illustrate simple analytical methods to quantify the resource utilization and physical layer control overhead for millimeter wave cellular systems. It is observed that certain flexible frame design choices may lead to dramatically improved resource utilization under various traffic patterns. Moreover, it is shown that fully digital beamforming architectures offer significantly lower overhead than analog and hybrid beamforming under comparable power budgets.
15 citations
TL;DR: The PS preemption technique reduces the dropping of LP PABs compared to conventional technique for subsequent arrivals of new low priority radio access bearer (RAB) requests, at the cost of QoS by higher priority bearer services.
Abstract: The preemption technique plays an important role in the radio resource management (RRM) of 3GPP Long Term Evolution (LTE) networks. In preemption handling methods, the resource allocation to high priority bearer requests is done by preempting the resources either partially or fully from the low priority preemptable active bearers (LP PABs). The paper proposes the priority-scaled (PS) preemption technique using Allocation and Retention Priority (ARP). The proposed technique suggests the priority-scaled (PS) preemption of resources up to minimum quality of service (QoS) level from all LP PABs. This is in contrast with conventional preemption technique, wherein high priority bearer requests preempt resources completely up to minimum QoS level, with PABs selected in sequence from lowest priority onwards. The paper investigates performance of the proposed technique in terms of number of active bearers dropped and blocked to accommodate higher priority bearer requests. The PS preemption technique reduces the dropping of LP PABs compared to conventional technique for subsequent arrivals of new low priority radio access bearer (RAB) requests, at the cost of QoS by higher priority bearer services. However, the QoS sacrifice made by the high priority PABs is limited to minimum QoS level.
15 citations