DRX in New Radio Unlicensed: A Step Beyond 5G Wireless

Saxena, Navrati; Roy, Abhishek; Maheswari, Mukesh Kumar; Rastogi, Eshita; Shin, Dong Ryeol

doi:10.1109/mcom.001.2000281

Cited by 18 publications

(4 citation statements)

References 7 publications

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“…In this model, the light traffic is transferred over a low-quality mmWave link without performing beam alignment to reduce the time spent on beam searching and waiting for the inactivity timer. Aside from NSA architecture, [19] explored DRX on NR unlicensed bands (NR-U). The UE connects to a gNB and unlicensed bands simultaneously to enhance throughput.…”

Section: B Drx In Dual Connectivity Configurationmentioning

confidence: 99%

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Energy-Efficient Traffic Steering in Millimeter-Wave Dual Connectivity Discontinuous Reception Framework

2022

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The Dual connectivity (DC) technology is a robust solution for Internet service providers (ISP) to evolve their legacy infrastructures with less cost to speed up the progress of fifth-generation (5G) services coverage. DC enables the traditional network to connect to multiple New Radio (NR) Node B (gNBs). A well-known scheme is the non-standalone (NSA) NR. In this case, the user equipment (UEs) could access the network via both the evolved Node B (eNB) and the gNB. However, some research has indicated that the UEs in such a configuration suffer from power consumption problems. UEs are typically configured with discontinuous reception (DRX) mechanism to save power. However, most current systems do not investigate and optimize the DRX parameters. To the authors' best knowledge, this work is the first to combine DRX with traffic steering for the UEs in the NSA NR system. A traffic steering algorithm is proposed to improve the coordination between the eNB and the gNB. We used a semi-Markov chain model to analyze power consumption and average delay. Compared with standard DRX operated in LTE, NR, and DC, we verified that the proposed model achieves power-saving gains without incurring an additional delay. The results indicated that the UE could save considerable power with an optimized system configuration. INDEX TERMS Discontinuous reception (DRX), dual connectivity (DC), power saving, traffic steering I. INTRODUCTION

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Section: B Drx In Dual Connectivity Configurationmentioning

confidence: 99%

“…Table 1 organizes the contributions of the existing literature. Papers [15]- [19] considered DRX in dual connectivity architecture. However, either EN-DC architecture was not considered or traffic steering was not applied.…”

Section: Traffic Steeringmentioning

confidence: 99%

Energy-Efficient Traffic Steering in Millimeter-Wave Dual Connectivity Discontinuous Reception Framework

2022

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“…The efficient DRX cycle schemes, such as Enhanced Paging Monitoring (EPM) and Extended Discontinuous Reception (eDRX), aim to minimize radio resource overhead in the 5G [3]- [5]. In addition, a beam-aware DRX scheme [6] and Partitioned UE ID-based Directional Paging (PIDP) [7] are applied to alleviate the computational burden of beam search in the 5G.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of an Efficient Wake-Up Synchronization Scheme Based on History in a 5G Software Modem

Jeong

Kim

2023

IEEE Access

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5G adopts Discontinuous Reception (DRX) technology, which enables the User Equipment (UE) to repeat sleep and wake-up cycles for power-saving. To minimize power consumption, the UE needs to re-synchronize to a downlink signal transmitted from a serving gNodeB (gNB) for each DRX occasion.To have a synchronization technique suitable to DRX occasions, we design and implement a history-based synchronization scheme that can effectively manage the window of synchronization signal detection. The proposed scheme primarily considers the statistics of previously detected timing offsets when configuring the window of synchronization. The history information is formatted appropriately for calculating the drift of the timing offset on each DRX occasion. The proposed scheme also monitors multi-path environments and extends the detection window to the timing offset of the second path based on the probabilistic model. To demonstrate its performance, the proposed scheme is implemented on a software modem so that it can be processed in real-time. The experimental results demonstrate that the proposed scheme can reduce computational complexity and achieve more precise synchronization in a low Signal to Noise Ratio (SNR) regime.

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“…2 The number of smart devices are expected to drastically with time. To address this huge user demand, along with unlicensed spectrum, 3 Low Power Wide Area (LPWA) networks are being deployed. The vision of LPWA networks lies in delivering high connectivity, low data rate, and low power requirements.…”

Section: Introductionmentioning

confidence: 99%

Energy efficiency analysis of narrowband Internet of Things with auxiliary active cycles for small data transmission

Rastogi

Maheshwari

Roy³

et al. 2021

Trans Emerging Tel Tech

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Narrowband Internet of Things (NB-IoT) is a cellular-based technology standardized by the Third Generation Partnership Project (3GPP) in Release-13 with the primary focus to support low-power, low-data rate, and delay-tolerant applications. The main contributions of this article are: (a) we describe the architecture of NB-IoT and its evolution in further 3GPP Releases and (b) we develop a semi-Markov based energy-saving model for the NB-IoT device. Different from the other existing approaches which focus on the optimization of power consumption of the NB-IoT device, we propose the addition of a novel Auxiliary State to the conventional NB-IoT Discontinuous Reception (DRX) mechanism. This state facilitates the reduction in energy consumption of the NB-IoT device, especially in case of small data transmission. The performance of the proposed scheme is analyzed in terms of power saving factor and average delay experienced by the device for varying eDRX timer, PSM timer, DRX cycle duration, and DRX active duration values. The proposed model is also evaluated for different arrival rates of the data packets and thresholds on the number of data packets.In this study, we claim that the newly introduced Auxiliary State improves the power saving of the NB-IoT user on the arrival of very small data packets. Numerical results show that the power saving factor increases up to 97.1% and 98.25% by varying the eDRX timer and PSM timer, respectively.

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DRX in New Radio Unlicensed: A Step Beyond 5G Wireless

Cited by 18 publications

References 7 publications

Energy-Efficient Traffic Steering in Millimeter-Wave Dual Connectivity Discontinuous Reception Framework

Energy-Efficient Traffic Steering in Millimeter-Wave Dual Connectivity Discontinuous Reception Framework

Design and Implementation of an Efficient Wake-Up Synchronization Scheme Based on History in a 5G Software Modem

Energy efficiency analysis of narrowband Internet of Things with auxiliary active cycles for small data transmission

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