Distributed probabilistic medium access with multipacket reception and Markovian traffic

Ghanbarinejad, Majid; Schlegel, Christian

doi:10.1007/s11235-013-9838-3

Cited by 6 publications

(3 citation statements)

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“…For example, Sarker et al [3] analyzed the performance of half-duplex slotted Aloha protocol in terms of throughput, packet rejection probability and selfstability, in infrastructure-less networks with/without capture and retransmission cut-off scheme. Ghanbarinejad et al [4] studied distributed probabilistic access within networks supporting multipacket reception (MPR) at the physical layer. A throughput-optimal medium access strategy was proposed and analyzed.…”

Section: Related Work and Motivationsmentioning

confidence: 99%

“…A throughput-optimal medium access strategy was proposed and analyzed. The analysis about pure Aloha is not covered in [3,4]. It is worth noting that pure Aloha protocol is attractive for LPWAN, because synchronizing all terminals would require extra payload and energy-consuming transmissions and thus increases the manufacture cost of terminals.…”

Section: Related Work and Motivationsmentioning

confidence: 99%

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Analysis of macro diversity based on maximum ratio combining in long range ALOHA networks

2019

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In low power wide area networks (LPWAN), packets transmitted by a device are not addressed to a specific base station : any surrounding station can receive them. This opens the way to several macro diversity schemes. As opposed to independent decoding of packets received by each base station, we propose using maximum ratio combining (MRC) to improve system performance. We use stochastic geometry to analyze the packet loss probability when MRC is implemented for both pure and slotted Aloha and obtain a closed formula when the path loss exponent γ is 4. However, the formula is valid when all base stations on an infinite plane participate in the MRC procedure, which gives the most optimistic evaluation. We developed simulations to get the performance when a finite number of receivers in the MRC is considered and focus on the case with only 2 receivers. We use a curve-fitting approach based on the simulation results to get a closed-form formula of the packet loss probability with 2 receivers. This curve-fitting approach is also applicable to other cases in which more receivers are leveraged by MRC. The formula is easy to use and accurate when γ ∈ [3.3, 4.5] and the loss probability is greater than 0.5%. For pure Aloha when advanced transmission techniques (e.g., interleaving, robust channel coding, etc.) are applied and when the capture ratio is 3 dB, the system capacity for a 10% packet loss probability is increased by a factor greater than 1.26 compared to a simple scheme in which each base station independently decodes packets.

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Section: Related Work and Motivationsmentioning

confidence: 99%

Section: Related Work and Motivationsmentioning

confidence: 99%