Mean Queuing Delay in LTE DRX

A finite-capacity queueing model with the arrival stream of messages governed by the compound Poisson process and generally-distributed processing times is investigated. Whenever the system becomes empty (the server becomes idle), a number of deterministic independent vacations of equal length are initialized as far as at least one message is detected in the accumulating buffer at the completion epoch of one of them. During vacations the service process is suspended completely, while after finishing the last vacation it restarts normally. Identifying Markov moments in the evolution of the system and using the Korolyuk's potential method, the compact-form representation for the transient queue-size distribution conditioned by the initial buffer state is found in terms of its Laplace transform. The considered model has potential applications in modeling the energy saving LTE DRX mechanism. A detailed simulation and numerical study is attached.

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“…Similarly, let us find the representation for x 1 (s, m) in terms of x 0 (s, m). Substituting n = 0 into (22) and utilizing the fact that…”

Section: Representation For Solutionmentioning

confidence: 99%

“…In [22] a new method is proposed for computing mean queueing delay in LTE DRX. A variant of the M/G/1-type queue with a modified service time and multiple vacations is proposed for the analysis of DRX mechanism in [8].…”

Section: Introductionmentioning

confidence: 99%

On Time-Dependent Queue-Size Distribution in a Model With Finite Buffer Capacity and Deterministic Multiple Vacations With Applications to LTE DRX Mechanism Modeling

2021

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“…Their conclusion is that a higher number of short DRX cycles is preferable for active traffic. The impact of latency on the power saving factor is also shown in [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

The Tradeoff between Mean Delay and Energy Saving Factor under DRX Scheme

Hossain¹,

Islam²,

Tabassum³

et al. 2020

IJCA

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Recently power saving is a vital issue for wireless devices of 4G and 5G networks. A device enters in sleeping mode (short and long sleep cycle) when there is no arrival of traffic but wakeup once the arrival of traffic. Before wakeup, the UE user equipment (UE) spends the rest of the sleeping cycle which incurs a delay of service. There is a tradeoff between the length of a sleep cycle (power saving factor ids higher for longer sleep cycle) and mean delay of service. In this paper, a Markov chain is designed including timer inactivity, short sleep, and long sleep and active service states. The closedform solution of the chain is performed using node equations hence comparison of performance is made with previous work in the context of power-saving factor and mean delay. Both the power saving factor and mean delay of this paper are found marginally better than the previous work at lower packet arrival rate but at higher arrival rate performance are almost the same but claims some explanations.

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Tuning of LTE/LTE-A DRX parameters

Ramazanali

Vinel

2016

2016 IEEE 21st International Workshop on Computer Aided Modelling and Design of Communication Links and Networks (CAMAD)

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Mean Queuing Delay in LTE DRX

Cited by 6 publications

References 11 publications

On Time-Dependent Queue-Size Distribution in a Model With Finite Buffer Capacity and Deterministic Multiple Vacations With Applications to LTE DRX Mechanism Modeling

On Time-Dependent Queue-Size Distribution in a Model With Finite Buffer Capacity and Deterministic Multiple Vacations With Applications to LTE DRX Mechanism Modeling

The Tradeoff between Mean Delay and Energy Saving Factor under DRX Scheme

Tuning of LTE/LTE-A DRX parameters

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