Performance of Uplink Fractional Power Control in UTRAN LTE

Castellanos, C.U.; Villa, D.L.; Rosa, Claudio; Pedersen, Klaus I.; Calabrese, Francesco; Michaelsen, Per Henrik; Michel, J.

doi:10.1109/vetecs.2008.554

Cited by 203 publications

(107 citation statements)

References 4 publications

Supporting

Mentioning

103

Contrasting

Order By: Relevance

“…Previous studies [33,34] have shown that the system performance in terms of coverage (5th percentile user throughput) and cell throughput is highly dependent on the setting of P 0,k and α k . Load adaptive power control (LAPC) is proposed in [34] to dynamically adjust the users' power spectral density P 0,k .…”

Section: Uplink Power Controlmentioning

confidence: 99%

Radio resource management for uplink carrier aggregation in LTE-Advanced

Wang

Rosa²,

Pedersen

2015

J Wireless Com Network

View full text Add to dashboard Cite

This paper investigates the uplink resource allocation problem in the context of Long-Term Evolution (LTE)-Advanced systems with carrier aggregation (CA) and dual-cluster scheduling. On one hand, these Rel'10 functionalities can increase the available transmission bandwidth and scheduling flexibility in uplink. On the other hand, they will introduce additional power back-off for the power amplifier in the user equipment (UE) with non-contiguous resource allocation. Taking into account that the uplink is inherently limited by the maximum transmission power of the UE, the assignment of uplink CA and/or dual cluster transmission for LTE-Advanced UEs has to be careful. A pathloss-threshold-based component carrier (CC) and cluster configuration algorithm is proposed to determine whether an LTE-Advanced UE should be configured with multiple CCs and/or dual cluster scheduling. An extended bandwidth-expansion-based packet scheduling algorithm is proposed for dual-cluster transmission, which tightly couples the bandwidth allocation and packet scheduling together to exploit the frequency domain diversity with low complexity. Simulation results show that with proper differentiation between power-limited and non-power-limited UEs, Rel'10 CA with dual-cluster scheduling can maintain similar coverage performance as in Rel'8 case while achieving substantial gains in median and peak user throughputs. Moreover, the proposed CC assignment algorithm achieves higher user throughput as compared to blindly assigning all UEs on all available CCs.

show abstract

Section: Uplink Power Controlmentioning

confidence: 99%

Radio resource management for uplink carrier aggregation in LTE-Advanced

Wang

Rosa²,

Pedersen

2015

J Wireless Com Network

View full text Add to dashboard Cite

show abstract

“…It is tuned to allow partial path loss compensation, which combined with an adequate P 0 value allows significant UE throughput improvements [27,28].…”

Section: Ue Power Setting and Mprmentioning

confidence: 99%

MPR-Aware Scheduler for Carrier Aggregation Transmissions in LTE Uplink

Lema

García-Lozano

Ruíz

2015

Wireless Pers Commun

View full text Add to dashboard Cite

Unlike previous Long Term Evolution (LTE) releases, LTE -Advanced (LTE-A) allows the use of non-contiguous resource allocation in the uplink (UL). This feature leads to increase the spectral efficiency thanks to link performance gains obtained from frequency diversity. At the same time, non-contiguous allocations bring higher peak to average power ratio (PAPR) and so potentially higher intermodulation distortion and adjacent channel leakage-power ratio (ACLR). Power derating has been proposed as a means to avoid this problem and thus user equipments (UEs) must reduce their maximum transmitted power. However, the additional link loss on power limited UEs partially counteracts the gain brought by multi-cluster allocation. In this sense, this paper proposes to include Maximum Power Reduction (MPR) information in opportunistic scheduling decisions. The new scheduling proposal is able to determine whether multi-clustering leads to a net gain in instantaneous throughput or if localized allocation is preferred. The proposed method is compared to other scheduling techniques and it is also analyzed in different inter-site distance scenarios. Results show that considering MPR in opportunistic decisions can lead to overall cell performance improvements.

show abstract

“…[51] evaluates the impact of a FPC scheme on the SINR and interference distributions in providing a sub-optimal configuration tuned for interference and noise-limited scenarios. The methodologies in [52] employ aperiodic CLPC corrections to control/correct the UL power level.…”

Section: Uplink Power Controlmentioning

confidence: 99%

3GPP LTE/SAE: An Overview

Chadchan¹,

Akki²

2010

IJCEE

View full text Add to dashboard Cite

Abstract-3GPP LTE/SAE is a next generation radio access system that supports future end-user requirements. The fundamental aim of long-term evolution (LTE) is to improve the service provisioning and reduce user and operators cost, which will be fulfilled by improving data rates, coverage, system capacity and reducing latency. The paper presents the technical overview of Long Term Evolution (LTE)/ System Architecture Evolution (SAE), the QoS provisioning aspects of Evolved Packet System (EPS), the key research challenges and the ongoing work to provide solutions. The discussion also provides an insight into 3GPP LTE-Advanced, which is the future of LTE on the roadway to 4G. The paper provides the valuable and concise information to the researchers in the area of 3GPP LTE and 4G.

show abstract

Performance of Uplink Fractional Power Control in UTRAN LTE

Cited by 203 publications

References 4 publications

Radio resource management for uplink carrier aggregation in LTE-Advanced

Radio resource management for uplink carrier aggregation in LTE-Advanced

MPR-Aware Scheduler for Carrier Aggregation Transmissions in LTE Uplink

3GPP LTE/SAE: An Overview

Contact Info

Product

Resources

About