Scholarlink

<p>Peer-to-peer (P2P) file sharing protocols like BitTorrent have revolutionized content distribution, but they struggle in disaster scenarios with unreliable connectivity and energy-constrained nodes. We present a Java-based P2P system that enhances BitTorrent with a novel “Disaster Mode” featuring battery-aware super-peer selection and fountain coding. The design elects a well-powered peer as leader, broadcasts redundant encoded chunks, uses sparse acknowledgments (ACKs) to minimize feedback, and seamlessly falls back to standard BitTorrent once networks stabilize. In Disaster Mode, a chosen super-peer with the highest battery coordinates a one-to-many fountain-coded file broadcast, while peers send periodic bitmap ACKs instead of per-chunk ACKs. In tests with 5–50 peers and 0–30% packet loss, the Disaster Mode improved file completion times by up to 2.3x and sustained ~ 25–30% higher throughput under severe loss compared to vanilla BitTorrent. A battery-rich super-peer reduced average completion time by ~ 20% versus a random leader selection. The results demonstrate that integrating an energy-aware hierarchy and rateless coding, a form of rateless erasure code, dramatically increases P2P resilience. The hybrid approach retains BitTorrent’s efficiency in good conditions while enabling robust operation during network disruptions, making it attractive for emergency and mobile scenarios.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Battery-aware super-peer and fountain coding in Java P2P systems

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月19日

查看全文
  • Arpana Sinhal,
  • Anay Sinhal,
  • Amit Sinhal

摘要

Peer-to-peer (P2P) file sharing protocols like BitTorrent have revolutionized content distribution, but they struggle in disaster scenarios with unreliable connectivity and energy-constrained nodes. We present a Java-based P2P system that enhances BitTorrent with a novel “Disaster Mode” featuring battery-aware super-peer selection and fountain coding. The design elects a well-powered peer as leader, broadcasts redundant encoded chunks, uses sparse acknowledgments (ACKs) to minimize feedback, and seamlessly falls back to standard BitTorrent once networks stabilize. In Disaster Mode, a chosen super-peer with the highest battery coordinates a one-to-many fountain-coded file broadcast, while peers send periodic bitmap ACKs instead of per-chunk ACKs. In tests with 5–50 peers and 0–30% packet loss, the Disaster Mode improved file completion times by up to 2.3x and sustained ~ 25–30% higher throughput under severe loss compared to vanilla BitTorrent. A battery-rich super-peer reduced average completion time by ~ 20% versus a random leader selection. The results demonstrate that integrating an energy-aware hierarchy and rateless coding, a form of rateless erasure code, dramatically increases P2P resilience. The hybrid approach retains BitTorrent’s efficiency in good conditions while enabling robust operation during network disruptions, making it attractive for emergency and mobile scenarios.