Delay and Power Consumption in LTE/LTE-A DRX Mechanism With Mixed Short and Long Cycles

Tseng, Chien‐Cheng; Wang, Hwang-Cheng; Kuo, Fang-Chang; Ting, Kuo-Chang; Chen, Hsiao‐Hwa; Chen, Guan-Yun

doi:10.1109/tvt.2015.2405560

Cited by 78 publications

(77 citation statements)

References 19 publications

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“…Discontinuous reception (DRX) has been used as an efficient power saving protocol at the UE in various standards like Universal Mobile Telecommunications System (UMTS), Long‐Term Evolution (LTE), and Long‐Term Evolution Advanced (LTE‐A) wireless networks . In DRX mechanism, the incoming packets are received in a discontinuous manner at the UE instead of the packets being continuously sensed and received in earlier wireless standards.…”

Section: Introductionmentioning

confidence: 99%

“…For the real‐time applications, which contribute active traffic in the UE, packets have to be received without any delay to avoid undisturbed transmission. On the other hand, for non–real‐time services like background traffic, power saving at the UE is a higher priority concern compared to delay . Thus, the issue of power saving and buffering delay at the UE must be addressed together.…”

Section: Introductionmentioning

confidence: 99%

“…5 Discontinuous reception (DRX) has been used as an efficient power saving protocol at the UE in various standards like Universal Mobile Telecommunications System (UMTS), Long-Term Evolution (LTE), and Long-Term Evolution Advanced (LTE-A) wireless networks. 4,[6][7][8][9][10][11][12][13][14][15][16] In DRX mechanism, the incoming packets are received in a discontinuous manner at the UE instead of the packets being continuously sensed and received in earlier wireless standards. This discontinuous mode of packet reception hence saves the power of the UE by switching off its circuitry when there is no packet availability and monitors the incoming packets only at certain intervals of time.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Extended hybrid directional DRX with auxiliary active cycles for light traffic in 5G networks

Philip

Malarkodi

2018

Trans Emerging Tel Tech

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In recent years, energy efficiency has become a major cause of concern in mobile networks. The overwhelming applications and services provided by the evolving fifth‐generation (5G) technologies consume a substantial amount of energy, especially at the user equipment (UE). The 3rd Generation Partnership Project has proposed discontinuous reception (DRX) as a power saving technique for the UE. The DRX protocol has been used by different generation mobile standards. In this paper, the performance of hybrid directional DRX (HD‐DRX) for 5G communication with beam searching is improved upon by augmenting intermediate single packet active states in the short and long sleep cycles for light traffic in 5G networks. The supplementary active states save power by allowing the UE to receive packets within the sleep periods up to a certain threshold without transitioning to the active state. The short bursts of packets in the light traffic are received directly through the intermediate active states without beam searching. Once the given threshold exceeds, the system functions as normal HD‐DRX for the heavy traffic without the intermediate states. The proposed model is analyzed as a semi‐Markov process with the bursty packet data traffic model. The numerical results of the proposed model show 3.1% improvement in power saving and reduction in average delay by around 2.5 s compared to the HD‐DRX. Further studies can help deep dive into operationalizing this on a mass scale.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Extended hybrid directional DRX with auxiliary active cycles for light traffic in 5G networks

Philip

Malarkodi

2018

Trans Emerging Tel Tech

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“…Analytical models for the mean queuing delay have been considered in previously published work on DRX, however only with semi-Markov models, for example in [4]- [8]. In contrast, we consider the evolution of the system at the discrete of SubFrames (SFs) 1 , what enables the development of a Markovian model and brings a potential for a more detailed modeling of the DRX process.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, we consider the evolution of the system at the discrete of SubFrames (SFs) 1 , what enables the development of a Markovian model and brings a potential for a more detailed modeling of the DRX process. Moreover, works [4]- [7] consider the case when the User Equipment (UE) wakes up immediately during ON duration whereby the delay occurs only in sleep DRX state. We focus on the case when the UE wakes up only at the borders of DRX cycles [8], what complicates the delay analysis.…”

Section: Introductionmentioning

confidence: 99%

Mean Queuing Delay in LTE DRX

Ramazanali

Vinel

2016

IEEE Wireless Commun. Lett.

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Energy-efficiency is a crucial requirement for future 5G radio devices. Discontinuous Reception (DRX) is a mechanism for power saving in LTE/LTE-A standard. In this letter, a method is developed to compute the mean queuing delay induced by the DRX. In contrast to existing semi-Markovian models, an approach, which combines Markov chains and regenerative processes, is proposed. 1 The SF is the LTE resource element, which has a duration of 1 ms.

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