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Random Access with Joint Uplink/Downlink Resource Allocation for Multimedia Tactile Internet

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Abstract

The multimedia Tactile Internet is a network that provides ultra-low latency and ultra-high reliability for two-way multimedia services. Since random access in uplink dominates the delay and there exist variations in target delays and traffic volumes among connections, it is much more efficient to perform a joint uplink and downlink resource allocation. In this paper, we provide uplink random access schemes with joint uplink and downlink resource allocation with multichannel architecture for multimedia Tactile Internet. By doing so, one can significantly increase the resource utilization efficiency and improve the reliability of the multimedia Tactile Internet as well. The cores of resource management are two-fold. First, the joint resource allocation dynamically adjusts the ratio of the number of uplink channels to the number of downlink channels and performs access control based on the collision ratios and the queue lengths. Machine learning techniques such as deep reinforcement learning can be applied to maximize the throughput. Secondly, the efficient uplink random access for multichannel architecture increases the throughput, where each transmitting node selects several time slot/channel pairs based on either theory of the Finite Projective Plane, the random numbers, or the hybrid. In the performance evaluation, we compare the performance of different selection schemes for the multichannel architecture in terms of throughput for the multimedia Tactile Internet through simulation runs and analysis. The hybrid selection scheme performs the best since it has the advantages of both the Finite Projective Plane structure and random numbers. Lastly, we compare and contrast the proposed joint uplink/downlink random access scheme with other known schemes.

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Data Availability (Transparency)

The datasets generated or analyzed during the current study are available from the author by email. The entire manuscript belongs to the category of theoretical research, all data, i.e., figures or tables were generated from the derived mathematical formulations (equations listed in order). Simulation results along with MATLAB codes are available by email request. All data and materials generated or analyzed during the current study are available from the authors by email.

Code Availability (Software Application or Custom Code)

Related software applications or custom code during the current study are available from the authors by email.

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  1. Department of Information Management, National Defense University, Beitou, Taipei, Taiwan, Republic of China

    Tai-Kuo Woo & Chen-Hua Fu

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  1. Tai-Kuo Woo
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  2. Chen-Hua Fu
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The entire paper is written by T-KW and C-HF, including the concept, modeling and simulation, mathematical analysis, and so on.

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Correspondence to Chen-Hua Fu.

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Woo, TK., Fu, CH. Random Access with Joint Uplink/Downlink Resource Allocation for Multimedia Tactile Internet. Wireless Pers Commun 135, 323–346 (2024). https://doi.org/10.1007/s11277-024-11007-4

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