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On Demand Resource Allocation for LTE Uplink Transmission Based on Logical Channel Groups

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Abstract

It is a hard task to allocate wireless resources for uplink transmission in LTE system. The main goals of previous research aimed at maximizing system throughput or fairness among UEs, while the real requirements of UEs were not considered. The result is that Resource Blocks (RBs) allocated by eNB are usually wasted and the requirements of UEs are not satisfied. We proposed an AAG-2 scheduling scheme, which can ensure the QoS of Guaranteed Bit Rate (GBR) bearers and at the same time efficiently allocate RBs to non-GBR bearers so as to improve resource utilization. In order to facilitate the management of bearers, the 3GPP (3rd Generation Partnership Project) suggested dividing bearers into four Logical Channel Groups (LCGs), rather than just GBR and non-GBR bearers. So far, 3GPP has not specified the mapping between LCGs and bearers of different QoS Class Identifiers (QCIs), but leaves the decision to system operators. In this paper, we propose a new scheme, AAG-LCG, wherein bearers are classified into four LCGs with different priority levels. With the proposed scheme, eNB can efficiently allocate RBs to meet the QoS requirements of various LCG bearers while maintaining sound overall system performance.

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Acknowledgements

This paper is supported by Ministry of Science and Technology of Taiwan under grant No. 104-2221-E-197-007, 104-2221-E-197-009, 104-2221-E-197-016. The authors would like to also thank Shing-Jye Huang and Jia-Hao Xu, who helped the simulation work.

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Authors and Affiliations

  1. Department of Electronic Engineering, National Ilan University, Yilan City, Taiwan

    Fang-Chang Kuo & Hwang-Cheng Wang

  2. Departments of Business Administration and Information Engineering, Minghsin University of Science and Technology, Xinfeng Township, Taiwan

    Kuo-Chang Ting

  3. Department of Electrical Engineering, National Ilan University, Yilan City, Taiwan

    Chih-Cheng Tseng

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  1. Fang-Chang Kuo
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  2. Kuo-Chang Ting
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  3. Hwang-Cheng Wang
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  4. Chih-Cheng Tseng
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Correspondence to Chih-Cheng Tseng.

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Kuo, FC., Ting, KC., Wang, HC. et al. On Demand Resource Allocation for LTE Uplink Transmission Based on Logical Channel Groups. Mobile Netw Appl 22, 868–879 (2017). https://doi.org/10.1007/s11036-017-0860-7

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  • DOI: https://doi.org/10.1007/s11036-017-0860-7

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