Iterative Relay Scheduling with Hybrid ARQ under Multiple User Equipment (Type II) Relay Environments
KAUST DepartmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900 Saudi Arabia.
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AbstractIn this work, we propose an iterative relay scheduling with hybrid ARQ (IRS-HARQ) scheme which realizes fast jump-in/successive relaying and subframe-based decoding under the multiple user equipment (UE) relay environments applicable to the next-generation cellular systems (e.g., LTE-Advanced and beyond). The proposed IRS-HARQ aims to increase the achievable data rate by iteratively scheduling a relatively better UE relay closer to the end user in a probabilistic sense, provided that the relay-to-end user link should be operated in an open-loop and transparent mode. The latter is due to the fact that not only there are no dedicated control channels between the UE relay and the end user but also a new cell is not created. Under this open-loop and transparent mode, our proposed protocol is implemented by partially exploiting the channel state information based on the overhearing mechanism of ACK/NACK for HARQ. Further, the iterative scheduling enables UE-to-UE direct communication with proximity that offers spatial frequency reuse and energy saving.
CitationNam SS, Alouini M-S, Choi S (2018) Iterative Relay Scheduling with Hybrid ARQ under Multiple User Equipment (Type II) Relay Environments. IEEE Access: 1–1. Available: http://dx.doi.org/10.1109/ACCESS.2018.2791520.
SponsorsThis work was supported by Wonkwang University in 2017.