Terminal relays are prospected to play a key role in facilitating the communication between base stations and low-cost power-constrained cellular Internet of Things (IoT) devices. However, these mobile relays require a mechanism by which they can autonomously assign the available resource blocks (RBs) to their assisted IoT devices in the absence of channel state information (CSI) and with minimal assignment conflicts. To address this problem, in this work, we develop an autonomous sequence-based RB assignment scheme that dispenses with CSI. The sequences underling the proposed scheme are designed using the Chinese remainder theorem (CRT). In particular, the CRT is used to combine the cyclic sequences generated by simple cyclic group structures into longer ones. The combining process introduces additional degrees of freedom in sequence generation, thereby enriching the set of RB assignment sequences. Simulation results show that the sequences generated by the proposed CRT-based scheme outperform those generated by currently available autonomous ones.

Additional Metadata
Keywords 3GPP, Cathode ray tubes, Generators, Interference, Internet of Things, Relays, Wireless communication
Persistent URL dx.doi.org/10.1109/TWC.2018.2811798
Journal IEEE Transactions on Wireless Communications
Citation
Fouad, Y.M.M. (Yaser M. M.), Gohary, R, & Yanikomeroglu, H. (2018). Chinese Remainder Theorem Based Sequence Design for Resource Block Assignment in Relay-Assisted Internet-of-Things Communications. IEEE Transactions on Wireless Communications. doi:10.1109/TWC.2018.2811798