Refracting RIS-Aided Hybrid Satellite-Terrestrial Relay Networks: Joint Beamforming Design and Optimization

Lin, Zhi; Niu, Hehao; An, Kang; Wang, Yong; Zheng, Gan; Chatzinotas, Symeon; Hu, Yihua

doi:10.1109/taes.2022.3155711

Cited by 329 publications

(206 citation statements)

References 27 publications

Supporting

Mentioning

118

Contrasting

Order By: Relevance

“…However, the data rate of IEEE 802.15.4 is only up to 250 kb/s and cannot satisfy the requirements of high rate transmissions in many IIoT applications. In addition, reconfigurable intelligent surface and satellite-terrestrial networks are also investigated to improve the transmission reliability in IIoT networks [ 12 , 13 ]. However, these solutions may require additional hardware equipment, which can increase the cost and system complexity.…”

Section: Related Workmentioning

confidence: 99%

Enabling Real-Time Quality-of-Service and Fine-Grained Aggregation for Wireless TSN

Zhang

Wang

et al. 2022

Sensors

View full text Add to dashboard Cite

Wireless Time-Sensitive Networking (WTSN) has emerged as a promising technology for Industrial Internet of Things (IIoT) applications. To meet the latency requirements of WTSN, wireless local area network (WLAN) such as IEEE 802.11 protocol with the time division multiple access (TDMA) mechanism is shown to be a practical solution. In this paper, we propose the RT-WiFiQA protocol with two novel schemes to improve the latency and reliability performance: real-time quality of service (RT-QoS) and fine-grained aggregation (FGA) for TDMA-based 802.11 systems. The RT-QoS is designed to guarantee the quality-of-service requirements of different traffic and to support the FGA mechanism. The FGA mechanism aggregates frames for different stations to reduce the physical layer transmission overhead. The trade-off between the reliability and FGA packet size is analyzed with numerical results. Specifically, we derive a critical threshold such that the FGA can achieve higher reliability when the aggregated packet size is smaller than the critical threshold. Otherwise, the non-aggregation scheme outperforms the FGA scheme. Extensive experiments are conducted on the commercial off-the-shelf 802.11 interface. The experiment results show that compared with the existing TDMA-based 802.11 system, the developed RT-WiFiQA protocol can achieve deterministic bounded real-time latency and greatly improves the reliability performance.

show abstract

Section: Related Workmentioning

confidence: 99%

Enabling Real-Time Quality-of-Service and Fine-Grained Aggregation for Wireless TSN

Zhang

Wang

et al. 2022

Sensors

View full text Add to dashboard Cite

show abstract

“…Here, each point corresponds to the stall generations settings in Figs. [12][13][14] where the leftmost points correspond to the minimum number of stall generations for each case. The more a plot goes to the lower-right area, the better the performance where a high average improvement rate is achieved with a low average number of performed combination.…”

Section: Tmaxmentioning

confidence: 99%

Two-Step Dynamic Cell Optimization Algorithm for HAPS Mobile Communications

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Recently, cognitive radio technology has been regarded as a promising solution for solving spectrum resource shortages due to its characteristic of efficient spectrum utilization [ 1 , 2 , 3 ]. In addition, satellite communications have received significant attention due to their widely applicability in emergency rescues, environmental monitoring, and network access in unpopulated areas [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. The spectrum management of most commercial geostationary orbit communication satellites follows fixed channel authorization allocation modes.…”

Section: Introductionmentioning

confidence: 99%

NC-OFDM Satellite Communication Based on Compressed Spectrum Sensing

Wang

Niu

Zhao

et al. 2022

Sensors

Self Cite

View full text Add to dashboard Cite

With the fast development of giant LEO constellations, the effective spectrum utilization has been regarded as one of the key orientations for satellite communications. This paper focuses on improving the spectrum utilization efficiency of satellite communications by proposing a non-continuous orthogonal frequency division multiplexing (NC-OFDM) method. Based on the models of NC-OFDM system, we first propose a sub-carrier allocation method by using spectrum sensing to efficiently perceive and utilize the spectrum holes in the satellite communication system. Then, a hybrid genetic particle swarm optimization method is adopted to allocate the channel resources effectively. Finally, simulation results verify that the proposed algorithm can significantly improve the spectrum efficiency of satellite communications.

show abstract

Refracting RIS-Aided Hybrid Satellite-Terrestrial Relay Networks: Joint Beamforming Design and Optimization

Abstract: Reconfigurable intelligent surface (RIS) has been viewed as a promising solution in constructing reconfigurable radio environment of the propagation channel and boosting ... View more Metadata

Cited by 329 publications

References 27 publications

Enabling Real-Time Quality-of-Service and Fine-Grained Aggregation for Wireless TSN

Enabling Real-Time Quality-of-Service and Fine-Grained Aggregation for Wireless TSN

Two-Step Dynamic Cell Optimization Algorithm for HAPS Mobile Communications

NC-OFDM Satellite Communication Based on Compressed Spectrum Sensing

Contact Info

Product

Resources

About