Application Research of Multi-Mode Relay in Future Heterogeneous Networks

The fast increase of users in existing mobile networks requires more base stations (BSs) to bear more communication traffic. Future heterogeneous network is considered to be a promising candidate architecture to meet the demands of wireless networks under scarcity of radio frequency (RF) resources....

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Bibliographic Details
Published in:Applied sciences 2019-09, Vol.9 (18), p.3934
Main Authors: Bai, Wenle, Xiao, Yu, Hu, Danping, Zhang, Yongmei
Format: Article
Language:English
Subjects:
Communication
Emissions
heterogeneous wireless networks
MMR
outage probability
Radio equipment
Radio frequency
Software
unequal relay power
Wireless networks
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Summary:The fast increase of users in existing mobile networks requires more base stations (BSs) to bear more communication traffic. Future heterogeneous network is considered to be a promising candidate architecture to meet the demands of wireless networks under scarcity of radio frequency (RF) resources. In this paper, we present a multi-mode relay (MMR) model based on two-way relay technology, which is applied to heterogeneous hierarchical wireless networks (HHWN), and set up a system model of HHWN with 3 tiers, 2 users between the macrocell, and the picocell as the multi-mode relay (MMR). Specifically, we consider the new system with unequal relay emission power situation, which is usually researched in the traditional literature with equal relay emission powers. Based on this idea, we define the two-way SINR ratio, derive the mathematical formulas of outage error probability with channel estimation errors, and verify theoretical expressions by data simulations. For further comparison, several experiments are implemented to illuminate the effect on outage probability among different levels of relay emission power, noise power, and signal power. Furthermore, several conclusions are obtained, which have some meanings for implementing MMR in future heterogeneous networks.
ISSN:2076-3417
2076-3417
DOI:10.3390/app9183934