Frequency and Time Domain Packet Scheduling Based on Channel Prediction with Imperfect CQI in LTE

Wang, Yongxin; Sandrasegaran, Kumbesan; Zhu, Xinning; Fei, Jingjing; Kong, Xiaoying; Lin, Chen‐Ju

doi:10.5121/ijwmn.2013.5412

Cited by 5 publications

(5 citation statements)

References 23 publications

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“…Some MAC scheduling schemes comprise the timedomain and the frequency-domain scheduler in the LTE-A network. Wang et al [26] proposed a novel packet scheduling algorithm based on frequency domain (FD) prediction and time-domain (TD) grouping technique for real-time applications in the downlink LTE-A system. e proposed algorithm, which is robust to simultaneous multiple channel defects, is proven to satisfy QoS requirements for real-time users and achieve the rate requirement.…”

Section: Related Researchmentioning

confidence: 99%

“…us, the proposed twostage scheduling approach can effectively reduce the computational load in the case of many UE. Some MAC scheduling schemes did include both time and frequency domains [26][27][28]. Some studies had focused only on the rate of satisfaction [26,27], while the other considered only the fairness goal for non-real-time traffic flows [28].…”

Section: Proposing a Hybrid Network User Satisfaction-basedmentioning

confidence: 99%

“…Some MAC scheduling schemes did include both time and frequency domains [26][27][28]. Some studies had focused only on the rate of satisfaction [26,27], while the other considered only the fairness goal for non-real-time traffic flows [28]. e proposed MRDUF approach is based on UE's requirements and can appropriately allocate radio resources for UE real-time traffic in the LTE-A network.…”

Section: Proposing a Hybrid Network User Satisfaction-basedmentioning

confidence: 99%

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A Hybrid Network User Satisfaction-Based Downlink Scheduling in LTE-A Network

Mai

Yang

2022

Mathematical Problems in Engineering

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To provide high-quality wireless network multimedia services, the 4G/5G network media access control (MAC) layer has adopted the concept of the quality of service (QoS) with different traffic classification service requirements. To efficiently allocate the limited radio resources for achieving a good balance in QoS, throughput and fairness are necessary for the wireless network MAC scheduling issues. While many conventional scheduling schemes only considered one factor: rate or delay, network users might actually have different rate and delay requirements in concert. Herein, a hybrid network user satisfaction-based downlink scheduling approach, namely, max rate delay urgency first (MRDUF), is developed. The MRDUF approach simultaneously considers rate and delay requirements and adopts a hybrid strategy comprising time- and frequency-domain schedulers using two schemes, namely, the first come first serve (FCFS) and max throughput (MT), for the LTE-A downlink environment. Simulation study results have shown that our proposed approach outperforms the conventional scheduling schemes, including MT, proportional fair (PF), blind equal throughput (BET), and earliest deadline first (EDF). The benefit of MRDUF in terms of fairness of satisfaction of rate and delay is demonstrated by the simulation study.

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Section: Related Researchmentioning

confidence: 99%

Section: Proposing a Hybrid Network User Satisfaction-basedmentioning

confidence: 99%

Section: Proposing a Hybrid Network User Satisfaction-basedmentioning

confidence: 99%

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A Hybrid Network User Satisfaction-Based Downlink Scheduling in LTE-A Network

Mai

Yang

2022

Mathematical Problems in Engineering

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“…There are different packet scheduling algorithms which are used in LTE-A: Round Robin, Best CQI Scheduler, and Proportional Fair and more where the researchers every day seek to enhance the performance of LTE networks [16]. PS is used to allocate resource blocks for users depending on their Qos requirements and channel condition [17].…”

Section: Fig 2 Heterogenous Networkmentioning

confidence: 99%

“…In [8], a packet scheduling algorithm for the downlink LTE system is developed based on Kalman filter to restore the true CQI from erroneous channel quality feedback. Then, a time domain grouping of PF and Modified Largest Weighted Delay First (M-LWDF) algorithms is also used.…”

Section: Introductionmentioning

confidence: 99%

Modified Proportional Fair Scheduling Algorithm for Heterogeneous LTE-A Networks

Elshennawy

2020

Int. J. Interact. Mob. Technol.

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Growing of time-sensitive applications such as streaming multimedia, voice over IP and online gaming required strongly support from mobile communication technology. So, the persistent need for wireless broadband technologies such as LTE-A is essential. LTE-A can achieve QoS in an efficient manner by using a reliable packet scheduling algorithm. It also supports good cell coverage by using heterogeneous capability. In this paper, modifications of proportional fair (PF) algorithm are proposed with different methods to compute the average throughput, which is the main and important parameter in the PF cost function. These methods are geometric mean, root mean square and arithmetic mean. Vienna simulator is used to study the performance of the proposed algorithms. A comparison between PF modifications and the most famous algorithms (the original PF and Best CQI algorithms) with various UE velocities is introduced. Average UE throughput, spectral efficiency, energy per bit, cell throughput and fairness are used as performance indicators. The results expose that QPF has best improved values for spectral efficiency, energy per bit and fairness by 8.4%, 14%, and 9.3%, respectively than original PF. However, Best CQI has a better value of average UE and cell throughput than all algorithms of 2% and 1.8% in low and medium UE velocity, respectively, but the best value of all types of throughput at high speed is gained by QPF. QPF and GMPF has the same performance in fairness with all UEs speeds.

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