Performance Comparison of Practical Resource Allocation Schemes for Device‐to‐Device Communications

Abstract

Device-to-device (D2D) communications in cellular spectrum have the potential of increasing the spectral and energy efficiency by taking advantage of the proximity and reuse gains. Although several resource allocation (RA) and power control (PC) schemes have been proposed in the literature, a comparison of the performance of such algorithms as a function of the available channel state information has not been reported. In this paper, we examine which large scale channel gain knowledge is needed by practically viable RA and PC schemes for network assisted D2D communications. To this end, we propose a novel near-optimal and lowcomplexity RA scheme that can be advantageously used in tandem with the optimal binary power control scheme and compare its performance with three heuristics-based RA schemes that are combined either with the well-known 3GPP Long-Term Evolution open-loop path loss compensating PC or with an iterative utility optimal PC scheme. When channel gain knowledge about the useful as well as interfering (cross) channels is available at the cellular base station, the near-optimal RA scheme, termed Matching, combined with the binary PC scheme is superior. Ultimately, we find that the proposed low-complexity RA + PC tandem that uses some cross-channel gain knowledge provides superior performance.

Power Coordination based Efficient Resource Allocation for Device-to-Device Communication in 5G Networks

“…The power control algorithm is the main factor to allocate energy to adaptive D2D communication. In a single network control system, efficient power allocation can be addressed by linear programming problems [14][15][16][17][18][19]. And if so any appropriate solution exists, the available power vectors may be figured out for every Device to Device and cellular node to meet the corresponding SINR necessities.…”

Semi‐distributed resource management for underlay D2D communication with user's cooperation

“…Majority of the work related to resource allocation for D2D is dedicated to the centralized approaches in the literature . Overall sum rate of D2D and CU is maximized by proposing a greedy channel assignment for downlink and uplink D2D in Zulhasnine et al while considering the quality of service (QoS) of each user.…”

“…The above‐mentioned works can achieve limited spectrum efficiency because each D2D is restricted to share at most one channel and a CU can share its channel with at most one D2D pair. In Fodor, various resource allocation and power control schemes are compared with respect to available channel state information (CSI) in practical systems. In their work, mode selection (D2D or cellular), channel assignment, and power control is proposed to maximize the overall sum rate without considering the QoS for any user and channel assignment is based on one to one matching.…”