Buffer-aided Cooperative Networks Research Articles

Deep Learning Driven Buffer-Aided Cooperative Networks for B5G/6G: Challenges, Solutions, and Future Opportunities

Deep Learning Driven Buffer-Aided Cooperative Networks for B5G/6G: Challenges, Solutions, and Future Opportunities

A Low-Delay Lyapunov-Based Relay Selection Scheme in Buffer-Aided Cooperative Networks

A Low-Delay Lyapunov-Based Relay Selection Scheme in Buffer-Aided Cooperative Networks

Optimization Analysis of Max-Link Secure Relay Selection in Buffer-Aided Cooperative Networks

Cooperative communication technology has been proved to be an useful approach to accomplish physical layer security. In recent years, more and more attention has been paid to the collaboration network with buffer relay. This paper studies the safety performance of the maximum link level options. Compared with the existing buffer-assisted cooperative security schemes, max-Link secure relay selection (Max-Link-SRS) does not require the eavesdropper’s channel state information (CSI) and has a lower complexity. Based on markov chain theory, a new closed form expression of secure interrupt probability (SOP) is derived. Numerical simulation results confirm our analysis and demonstrate that the functioning of max-Link-SRS is superior to the previously reported buffer-less aided cooperative security scheme. It provides a significant coding obtain at a smaller buffer size, while ensuring diversity gain is close to the upper limit of the double number of relays at a bigger buffer zone.

Link Selection in Buffer-Aided Cooperative Networks for Green IoT

In this paper, the link selection algorithm in buffer-aided cooperative networks with multiple co-channel interferers for green internet of things (IoT) is investigated. In the considered system, the relay node selects the better link from the first and the second hop with the help of buffers. We evaluate the effects of the system parameters by deriving the analytical analysis as well as the asymptotic results on the exact expressions of the outage probability. The impacts of system parameters, such as the predefined target rate, the priority-outage tradeoff parameter, the buffer length and the number of interferers are evaluated in different setup scenarios. Considerable performance gains can be obtained compared with the classical decode-and-forward relaying networks. Simulation results are provided to verify the theoretical analysis.

Theoretical Analysis of Hybrid Buffer-Aided Cooperative Protocol Based on Max–Max and Max–Link Relay Selections

Motivated by the recent max–link protocol and the max–max protocol, both of which were developed for a simple dual-hop buffer-aided cooperative network, we present a novel hybrid buffer-aided cooperative protocol that attains the benefits of high reliability and reduced packet delay. More specifically, we incorporate a two-stage relay selection strategy, which is capable of attaining a low outage probability comparable to the max–link protocol. In addition, the proposed protocol maintains a beneficial end-to-end packet delay, which is lower than that of the max–link protocol in the realistic scenario supporting finite source-packet transmissions. Furthermore, by introducing a periodic Markov chain model, we derive the theoretical outage probability of our hybrid buffer-aided scheme under the realistic assumption of finite-buffer relays. Our analytical and simulation results demonstrate that the proposed protocol benefits from the aforementioned high-diversity reliable performance and the reduced end-to-end packet delay.