scispace - formally typeset
Proceedings ArticleDOI

Toward LTE commercial launch and future plan for LTE enhancements (LTE-Advanced)

Sadayuki Abeta
- pp 146-150
TLDR
The plan for LTE commercial launch in NTT DOCOMO and future plans for LTE Rel.
Abstract
As a promising radio access technology for next generation mobile communication systems, LTE (Long-Term Evolution) is being standardized by the 3rd Generation Partnership Project (3GPP) international standardization organization. LTE Release 8 has many advantages to the other systems, e.g., the peak throughput is 300Mbps in Downlink (DL) and 75Mbps in Uplink (UL), 2–3 time higher spectrum efficiency than Rel. 6 HSPA (High Speed Packet Access), very low latency around 5msec in RAN (Radio Access Network) and 100msec for connection setup time. With Release 8, the first version for LTE specification, being completed in March 2009, the LTE standard is now being developed towards commercialization in various countries in the world. This paper addresses the plan for LTE commercial launch in NTT DOCOMO and future plan for LTE Rel. 9 and LTE-Advanced (LTE Rel. 10 and beyond).

read more

Citations
More filters
Journal ArticleDOI

Resource allocation for device-to-device communications underlaying LTE-advanced networks

TL;DR: A novel resource allocation scheme based on a column generation method for D2D communications in LTE-Advanced networks is introduced to maximize the spectrum utilization by finding the minimum transmission length in terms of time slots while protecting the cellular users from harmful interference and guaranteeing the QoS of D1D links.
Book

Wireless Device-to-Device Communications and Networks

TL;DR: This book introduces D2D-based wireless communications from the physical, MAC, network, and application layer perspectives, providing all the key background information before moving on to discuss real-world applications as well as potential future developments.
Journal ArticleDOI

Micromachined One-Port Aluminum Nitride Lamb Wave Resonators Utilizing the Lowest-Order Symmetric Mode

TL;DR: In this article, the performance of one-port aluminum nitride (AlN) Lamb wave resonators utilizing the lowest-order symmetric mode with electrically open, grounded, and floating bottom electrode configurations are theoretically and experimentally investigated.
Journal ArticleDOI

A 4 GHz Continuous-Time $\Delta\Sigma$ ADC With 70 dB DR and $-$ 74 dBFS THD in 125 MHz BW

TL;DR: In this article, a 4 GHz third-order continuous-time ΔΣ ADC is presented with a loop filter topology that absorbs the pole caused by the input capacitance of its 4-bit quantizer.
Journal ArticleDOI

The Continuous Inverse Class-F Mode With Resistive Second-Harmonic Impedance

TL;DR: In this article, an extended version of the continuous class-F-1 mode power amplifier (PA) design approach is presented, which allows multiple solutions of fundamental and second-harmonic impedances that provide optimum performance to be computed.
References
More filters
Journal ArticleDOI

Network coordination for spectrally efficient communications in cellular systems

TL;DR: This article considers network coordination as a means to provide spectrally efficient communications in cellular downlink systems and describes how the antenna outputs are chosen in ways to minimize the out-of-cell interference, and hence to increase the downlink system capacity.
Journal ArticleDOI

LTE-advanced: next-generation wireless broadband technology [Invited Paper]

TL;DR: An overview of the techniques being considered for LTE Release 10 (aka LTEAdvanced) is discussed, which includes bandwidth extension via carrier aggregation to support deployment bandwidths up to 100 MHz, downlink spatial multiplexing including single-cell multi-user multiple-input multiple-output transmission and coordinated multi point transmission, and heterogeneous networks with emphasis on Type 1 and Type 2 relays.
Journal ArticleDOI

Coordinated multipoint transmission/reception techniques for LTE-advanced [Coordinated and Distributed MIMO]

TL;DR: System-level simulation evaluations show that the CoMP transmission and reception schemes have a significant effect in terms of improving the cell edge user throughput based on LTE-Advanced simulation conditions.
Journal ArticleDOI

Carrier aggregation framework in 3GPP LTE-advanced [WiMAX/LTE Update]

TL;DR: Support for carrier aggregation requires enhancement to the LTE Release 8/9 PHY, MAC, and RRC layers while ensuring that LTE Release 10 maintains backward compatibility to LTE Release8/9.
Journal ArticleDOI

IMT-advanced relay standards [WiMAX/LTE Update]

TL;DR: Insight is provided to both relay standards that could be helpful for readers to fully comprehend practical ways of incorporating relays into 4 G wireless broadband networks.