TY - JOUR
T1 - Iterative Relay Scheduling with Hybrid ARQ under Multiple User Equipment (Type II) Relay Environments
AU - Nam, Sung Sik
AU - Alouini, Mohamed-Slim
AU - Choi, Seyeong
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by Wonkwang University in 2017.
PY - 2018/1/9
Y1 - 2018/1/9
N2 - In 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.
AB - In 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.
UR - http://hdl.handle.net/10754/626870
UR - http://ieeexplore.ieee.org/document/8252706/
UR - http://www.scopus.com/inward/record.url?scp=85041234675&partnerID=8YFLogxK
U2 - 10.1109/ACCESS.2018.2791520
DO - 10.1109/ACCESS.2018.2791520
M3 - Article
AN - SCOPUS:85041234675
VL - 6
SP - 6455
EP - 6463
JO - IEEE Access
JF - IEEE Access
SN - 2169-3536
ER -