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International Conference on Communications and Networking in China

ChinaCom 2020: Communications and Networking pp 212–225Cite as

A Downlink Scheduling Algorithm Based on Network Slicing for 5G

Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST,volume 352)

Abstract

Current cellular mobile network should satisfy the service requirements of the User Equipment (UE) applications through Radio Resource Management (RRM) mechanisms as much as possible. In order to improve the resource utilization rate and Quality of Experience (QoE) for downlink Real-Time (RT) services in 5G system. In this paper, based on the Modified Largest Weighted Delay First (M-LWDF) algorithm, a slicing-oriented resource scheduling algorithm-S-MLWDF is proposed with using 5G network slicing technology. S-MLWDF takes RB groups as the basic units of RA (resource allocation) and takes slices as the allocation object. During the process of in-slice scheduling, on account of the Channel Quality Indication (CQI) obtained from Base Station (BS) feedback and the allocation of RBs over time, the generated weighting factor can guarantee the edge users to get equal scheduling opportunities. Meanwhile, the modified queue delay and HARQ retransmission packets delay can solve the problem of surge in Packet Loss Rate (PLR) near the delay threshold. The simulated results show that the performance of the proposed algorithm is better than the traditional scheduling algorithms. Especially compared with M-LWDF, the fairness and PLR of S-MLWDF are optimized by about 10% and 16.3%, which can better meet the needs of users.

Keywords

  • 5G
  • Network-slicing
  • S-MLWDF algorithm
  • Resource scheduling
  • Delay
  • Resource blocks allocation

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  • DOI: 10.1007/978-3-030-67720-6_15
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Acknowledgement

This work comes from a major project in Chongqing, “R&D and application of 5G road test instruments (No. cstc2019jscx-zdztzxX0002)”.

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Authors and Affiliations

  1. School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China

    Shanwei Wang, Bing Xi, Zhizhong Zhang & Bingguang Deng

Authors
  1. Shanwei Wang
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  2. Bing Xi
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  3. Zhizhong Zhang
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  4. Bingguang Deng
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Corresponding author

Correspondence to Shanwei Wang .

Editor information

Editors and Affiliations

  1. Shanghai University, Shanghai, China

    Honghao Gao

  2. Tsinghua University, Beijing, China

    Pingyi Fan

  3. Fudan University, Shanghai, China

    Jun Wun

  4. Tongji University, Shanghai, China

    Xue Xiaoping

  5. Hangzhou Dianzi University, Hangzhou, China

    Prof. Jun Yu

  6. Huawei Technologies Co Ltd, Shanghai, China

    Dr. Yi Wang

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Wang, S., Xi, B., Zhang, Z., Deng, B. (2021). A Downlink Scheduling Algorithm Based on Network Slicing for 5G. In: Gao, H., Fan, P., Wun, J., Xiaoping, X., Yu, J., Wang, Y. (eds) Communications and Networking. ChinaCom 2020. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 352. Springer, Cham. https://doi.org/10.1007/978-3-030-67720-6_15

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  • DOI: https://doi.org/10.1007/978-3-030-67720-6_15

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