Analysis of discontinuous reception (DRX) on energy efficiency and transmission delay with bursty packet data traffic

Wu, Jinyan; Park, Jaesung

doi:10.1007/s12243-020-00763-6

Cited by 7 publications

(6 citation statements)

References 23 publications

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“…DRX mechanism in LTE-A networks saves the power, but the delay is more. In Wu and Park, 12 it is mentioned that LTE/LTE-A networks with DRX mechanism saves the power, but delay may increase. In previous studies, 14,15,17 it is mentioned that LTE-5G with DRX mechanism (by introducing beam searching state) can reduce the delay in the system and also provide energy efficiency.…”

Section: State Of the Artmentioning

confidence: 99%

“…Therefore, the trade‐off between transmission delay and energy efficiency is necessary to achieve the optimal utilization of the DRX mechanism in a wide range of cases. To get the energy efficiency of the DRX mechanism in LTE‐A networks, Wu and Park 12 proposed a new metric named as real power‐saving (RPS) factor. In RPS, all the states and state transitions are considered in the DRX specification.…”

Section: State Of the Artmentioning

confidence: 99%

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Stochastic modeling for energy efficiency in modified directional discontinuous reception for LTE‐5G networks

Kalita

Selvamuthu

2023

Int J Communication

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Fifth-generation (5G) networks deal with high-frequency data rates, ultra-low latency, more reliability, massive network capacity, more availability, and a more uniform user experience. To validate the high-frequency rates, 5G networks engage beam searching operation. By adopting a beam searching state between the short and long sleep, one can reduce the system's delay. The energy consumption of user equipment (UE) in 5G networks is much higher than in the 4G networks. To reduce the energy consumption and increase the energy saving in UE, Long-Term Evolution (LTE)-5G networks adopt the discontinuous reception (DRX) scheme with a fixed number of short sleep. LTE-DRX without beam search operation (i.e., beam alignment) cannot work in 5G networks. Hence, keeping this scenario in mind, we have modeled a new modified directional discontinuous reception (MD-DRX) mechanism for LTE-5G networks. The MD-DRX mechanism captures the behavior of a beam searching, an inactive, an active, a long sleep, an ON, and a short sleep states.The short sleep state consists of a maximum M short sleep. To get the optimal energy saving and energy consumption (i.e., energy efficiency) from the MD-DRX mechanism, it is required to check the system's throughput. The trade-off between energy saving/energy consumption and throughput will provide the system's optimal energy saving and optimal energy consumption. In this paper, we have obtained the system's optimal energy saving and throughput by optimizing the maximum short sleep and short sleep duration. To get the energy efficiency for LTE-5G networks, the trade-off between average energy consumption/energy saving and throughput is shown.

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Section: State Of the Artmentioning

confidence: 99%

Section: State Of the Artmentioning

confidence: 99%

Stochastic modeling for energy efficiency in modified directional discontinuous reception for LTE‐5G networks

Kalita

Selvamuthu

2023

Int J Communication

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“…Massive efforts have been undertaken over the last decade to improve UE power efficiency in wireless communication [6][7][8][9]. In this context, Li et al [10] provided an overview on various power saving techniques including DRX mechanism, bandwidth adaptation, cross slot scheduling, etc.…”

Section: State Of the Artmentioning

confidence: 99%

Stochastic modeling for bandwidth part switching based DRX mechanism in 5G NR networks

2023

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The intensification of mobile broadband services and user experience is explicitly dependent on increased battery life of user equipment (UE) and minimized delay in service. In 5G New Radio (NR), in addition to Discontinuous Reception (DRX) scheme, Bandwidth Part (BWP) switching plays a significant role in reducing UE power consumption. The dynamic bandwidth operation in BWP switching is power efficient as UE can adapt its operating bandwidth based on the traffic arrival. In this work, BWP switching based DRX mechanism is modeled as an M X /G/1 queue to trade-off between quality of service (QoS) and power saving in UE in 5G NR. Analytical and numerical results on the proposed model show it to be promising in minimizing power consumption and reducing delay in service of UE.

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“…7,8 Numerous researchers worked on the DRX mechanism in Long-Term Evolution-Advanced (LTE-A) as well as the 5G networks to save UE power. [9][10][11][12][13][14] To analyze mathematically, Mehmood et al 15 presented a semi-Markov model (SMM) of DRX-based power saving mechanism for machine type communication considering a wide range of states in LTE-A networks. Moradi et al 16 considered extended state SMM including the discovery process and illustrated its effect on the DRX mechanism.…”

Section: Introductionmentioning

confidence: 99%

“…For power efficient devices in 5G, the DRX mechanism is the most widely used mechanism 7,8 . Numerous researchers worked on the DRX mechanism in Long‐Term Evolution‐Advanced (LTE‐A) as well as the 5G networks to save UE power 9‐14 . To analyze mathematically, Mehmood et al 15 presented a semi‐Markov model (SMM) of DRX‐based power saving mechanism for machine type communication considering a wide range of states in LTE‐A networks.…”

Section: Introductionmentioning

confidence: 99%

Power efficient stochastic modeling for Narrowband Internet of Things devices in 5G networks

Mittal

Jain

Selvamuthu

2023

Trans Emerging Tel Tech

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Narrowband Internet of Things (NB‐IoT) embodies the vision of connecting virtually anything with everything and aims to support a massive number of devices for small data transmission. However, an efficient power‐saving model for battery‐operated NB‐IoT devices is the need of the hour. In addition to the legacy discontinuous reception (DRX) scheme, efficient beamforming helps in saving device power. Moreover, the extended discontinuous reception (eDRX) mode and Power Saving Mode (PSM) in Radio Resource Control (RRC) idle mode enhances the effect of sleep while no data is available for the device to serve. In this work, power‐saving techniques for NB‐IoT devices are studied via stochastic modeling. This work proposes a semi‐Markov model (SMM) for beam measurement and beamforming‐based DRX mechanism, in RRC modes. The steady‐state probabilities for the SMM are calculated using the two‐stage method. The numerical results show the effective contribution of efficient beamforming, eDRX state and PSM state in enhancing the power saving of NB‐IoT devices.

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Analysis of discontinuous reception (DRX) on energy efficiency and transmission delay with bursty packet data traffic

Cited by 7 publications

References 23 publications

Stochastic modeling for energy efficiency in modified directional discontinuous reception for LTE‐5G networks

Stochastic modeling for energy efficiency in modified directional discontinuous reception for LTE‐5G networks

Stochastic modeling for bandwidth part switching based DRX mechanism in 5G NR networks

Power efficient stochastic modeling for Narrowband Internet of Things devices in 5G networks

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