Slotted ALOHA Game for Medium Access Control in Satellite Networks

Zhao, Bo; Ren, Guangliang; Zhang, Huining

doi:10.1109/iccchina.2019.8855903

Cited by 4 publications

(6 citation statements)

References 11 publications

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“…Once the number of nodes increases considerably beyond the original maximum, the estimator progressively losses estimation capability until it converges to an estimate of 2415 nodes for a population size of 4000 nodes. Nevertheless, the throughput is maintained close to the theoretic bound by allowing 21.2% of the present nodes to transmit [13], which is the percentage that w = 512 represents to a 4000 node population. To improve the performance for larger network sizes, the frame length should be increased, and the coefficients for OCI's correction recalculated for the new network size.…”

Section: B Fsa With Network Size Feedbackmentioning

confidence: 74%

“…In [13], the Slotted Aloha Game is proposed to control access to the medium in a satellite network. The proposal focuses on determining the transmission probabilities of a group of Fig.…”

Section: B Fsa With Network Size Feedbackmentioning

confidence: 99%

“…However, if the number of active nodes exceeds the number of slots, the probability of transmitting decreases in such a way that, on average, only a number of nodes equal to the size of the frame transmit. The evaluation of the Slotted Aloha Game shows to allow the communication of a large number of nodes, maintaining an approximately constant throughput, with a low access delay and a low power consumption [13]. Similarly to [12], the authors assume that the number of active nodes is perfectly known.…”

Section: B Fsa With Network Size Feedbackmentioning

confidence: 99%

“…Then, Fig. 5b shows the normalized energy efficiency, which is calculated considering that when a sensor node transmits, it consumes one arbitrary unit of energy as in [13]; then, the energy consumed by successful transmissions is divided by the total energy consumed during the entire process for transmissions. The results represent the averaged results of 30 repetitions for each estimator.…”

Section: B Fsa With Network Size Feedbackmentioning

confidence: 99%

“…Indeed, estimating a node population's size is a major factor for achieving scalability and energy efficiency on certain access control protocols [12], [13]. Additionally, knowing the number of devices to be served by a CubeSat guarantees the quality of service for their applications.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Network Size Estimation for Direct-to-Satellite IoT

Ilabaca

Montejo‐Sánchez²,

Fraire

et al. 2023

IEEE Internet Things J.

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The worldwide adoption of the Internet of things (IoT) depends on the massive deployment of sensor nodes and timely data collection. However, installing the required ground infrastructure in remote or inaccessible areas can be economically unattractive or unfeasible. Cost-effective nanosatellites deployed in low Earth orbits (LEO) are emerging as an alternative solution: on-board IoT gateways provide access to remote IoT devices, according to direct-to-satellite IoT (DtS-IoT) architectures. One of the main challenges of DtS-IoT is to devise communication protocols that scale to thousands of highly constrained devices served by likewise constrained orbiting gateways. In this paper, we tackle this issue by first estimating the (varying) size of the device set underneath the (mobile) nanosatellite footprint. Then, we demonstrate applicability of the estimation when used to intelligently throttle DtS-IoT access protocols. Since recent works have shown that MAC protocols improve the throughput and energy efficiency of a DtS-IoT network when a network size estimation is available, we present here a novel and computationally-efficient network size estimator in DtS-IoT: our optimistic collision information (OCI) based estimator. We evaluate OCI's effectiveness with extensive simulations of DtS-IoT scenarios. Results show that when using network size estimations, the scalability of a frame slotted Aloha-based DtS-IoT network is boosted 8-fold, serving up to 4 × 10 3 devices, without energy efficiency penalties. We also show the effectiveness of the OCI mechanism given realistic detection ratios and demonstrate its low computational cost implementation, making it a strong candidate for network estimation in DtS-IoT.

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Section: B Fsa With Network Size Feedbackmentioning

confidence: 74%

“…In [13], the Slotted Aloha Game is proposed to control access to the medium in a satellite network. The proposal focuses on determining the transmission probabilities of a group of Fig.…”

Section: B Fsa With Network Size Feedbackmentioning

confidence: 99%