Resource optimization for D2D communications based on statistical QoS provisioning

MI Xiang; ZHAO Ming; XU Xibin; WANG Jing

doi:10.16511/j.cnki.qhdxxb.2017.21.028

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Journal of Tsinghua University(Science and Technology) ›› 2017, Vol. 57 ›› Issue (12) : 1296-1302. DOI: 10.16511/j.cnki.qhdxxb.2017.21.028

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Resource optimization for D2D communications based on statistical QoS provisioning

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Abstract

Device-to-device (D2D) communications are a key technology in fifth generation (5G) cellular networks. Resource allocation is critical to the D2D communication performance and is a key research topic. This study considers D2D communications in orthogonal frequency division multiple access (OFDMA) based cellular networks where the user delay requirements are characterized by the statistical quality-of-service (QoS) provisioning. An effective resource allocation scheme is given to maximize the QoS-guaranteed system throughput while guaranteeing the interference threshold requirements of the cellular users. The original optimization problem is solved using the Lagrange approach with algorithms based on an alternating optimization method and a successive convex approximation method. Simulations show that the resource allocation scheme significantly improves the system performance.

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wireless communication / device-to-device (D2D) communications / resource allocation / power control / statistical quality-of-service (QoS) provisioning

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MI Xiang, ZHAO Ming, XU Xibin, WANG Jing. Resource optimization for D2D communications based on statistical QoS provisioning[J]. Journal of Tsinghua University(Science and Technology). 2017, 57(12): 1296-1302 https://doi.org/10.16511/j.cnki.qhdxxb.2017.21.028

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