2026· Journal of Communications Software and Systems· 0 citations· 26 references
TL;DR
PORTAC is proposed, a historical contact–enhanced collaborative cache routing mechanism integrating contact stability–aware routing and multi-level cache scheduling integrating contact stability–aware routing and multi-level cache scheduling.
Abstract
— Opportunistic networks enable communication in infrastructure-deficient scenarios such as IoT deployment and disaster rescue through node mobility. However, existing routing protocols relying solely on contact frequency neglect link duration, leading to unstable transmission and inefficient caching. This paper proposes PORTAC, a historical contact–enhanced collaborative cache routing mechanism integrating contact stability–aware routing and multi-level cache scheduling. A spatio-temporal Contact Stability Index (CSI) evaluates link quality via duration-based logarithmic gain and historical context, while a core–radiation–edge cache hierarchy manages messages by value, forwarding count, and lifetime. Simulations on the ONE platform show that PORTAC increases delivery ratio by over 10.6% compared with PropheRouter, enhancing efficiency in dynamic networks.
Efficient data dissemination in large-scale internet of things (IoT) networks remain challenging due to energy constraints, congestion, and delay under dynamic network traffic. This paper introduces a joint routing and medium access control (MAC)-layer scheduling framework (JRSM), incorporating priority-aware clusterin...
In dynamic hotspot scenarios such as large-scale events and emergency gatherings, UAV-assisted edge content delivery must address challenges like fluctuating user demands, limited cache capacity, and stringent energy constraints. Existing studies primarily focus on delay, throughput, or cache replacement costs, without...
Chen-Yu Wei, Jie Tian, Wen-Jian Xu et al.· 2026 IEEE/CIC International...· 0 citations
Preliminary results support the value of combining QoS admission, multi-objective path selection, and rapid backup-route switching for reliable communication in dynamic ad hoc networks.
Dr. Malothu Amru, Dr. Bitla Prabhakar, Somala Rama Kishore T. Satyanarayana· International Journal of Adv...· 0 citations
In anycast content delivery networks (CDNs), client requests are naturally routed to the topologically closest cache server (CS) via the border gateway protocol (BGP). However, BGP routing policies frequently cause path inflation, directing clients to geographically distant servers and severely degrading delivery laten...
Futo Masai, Noriaki Kamiyama· 2026 International Conferenc...· 0 citations
Opportunistic Internet of Things (O-IoT) networks operate in highly dynamic, infrastructureless environments where connectivity is intermittent and unpredictable, making efficient and reliable data delivery a persistent challenge. Traditional routing protocols such as Epidemic Routing and PRoPHET have been widely studi...
Abraham Tetteh, Maxwell Dorgbefu Jnr., Joshua C. Dagadu et al.· International Journal of Wir...· 0 citations
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