Delay-throughput tradeoffs for signalized networks with finite queue capacity

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Cui, Shaohua,1995Chalmers tekniska högskola,Chalmers University of Technology,Ministry of Education China,Beihang University (author)

Delay-throughput tradeoffs for signalized networks with finite queue capacity

Article/chapterEnglish2024

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2024

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LIBRIS-ID:oai:research.chalmers.se:e6ed310f-9e6f-439f-9508-06a97fba03ca
https://research.chalmers.se/publication/539614URI
https://doi.org/10.1016/j.trb.2023.102876DOI

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Language:English
Summary in:English

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Network-level adaptive signal control is an effective way to reduce delay and increase network throughput. However, in the face of asymmetric exogenous demand, the increase of network performance via adaptive signal control alone is at the expense of service fairness (i.e., phase actuation fairness and network resource utilization fairness). In addition, for oversaturated networks, arbitrary adaptive signal control seems to have little effect on improving network performance. Therefore, under the assumption that the mean routing proportions/turn ratios of vehicles at intersections are fixed, this study investigates the problem of optimally allocating input rates to entry links and simultaneously finding a stabilizing signal control policy with phase fairness. We model the stochastic optimization problem of maximizing network throughput subject to network stability (i.e., all queue lengths have finite means) and average phase actuation constraints to bridge the gap between stochastic network stability control and convex optimization. Moreover, we further propose a micro-level joint admission and bounded signal control algorithm to achieve network stability and throughput optimization simultaneously. Joint control is implemented in a fully decomposed and distributed manner. For any arrival rate, joint control provably achieves network throughput within O(1/V) of optimality while trading off average delay with O(V), where V is an adjusted control parameter. Through a comparative simulation of a real network with 256 O-D pairs, the proposed joint control keeps network throughput at maximum, guarantees service fairness, and fully utilizes network capacity (i.e., increases network throughput by 17.54%).

Subject headings and genre

TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Telekommunikation hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Telecommunications hsv//eng
TEKNIK OCH TEKNOLOGIER Samhällsbyggnadsteknik Transportteknik och logistik hsv//swe
ENGINEERING AND TECHNOLOGY Civil Engineering Transport Systems and Logistics hsv//eng
TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Kommunikationssystem hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Communication Systems hsv//eng
TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Reglerteknik hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Control Engineering hsv//eng
Admission control
Lyapunov optimization
Network stability
Distributed signal control

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Xue, YongjieBeihang University (author)
Gao, Kun,1993Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)gkun (author)
Wang, KaiTsinghua University (author)
Yu, BinMinistry of Education China,Beihang University (author)
Qu, Xiaobo,1983Tsinghua University(Swepub:cth)xiaobo (author)
Chalmers tekniska högskolaMinistry of Education China (creator_code:org_t)

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