Broadcasting is an important operation and been widely used in wireless sensor networks （WSNs）. These networks are power constrained as nodes operate with limited battery power. Wireless sensor networks are spatial ...Broadcasting is an important operation and been widely used in wireless sensor networks （WSNs）. These networks are power constrained as nodes operate with limited battery power. Wireless sensor networks are spatial graphs that have much more clustered and much high path-length characteristics. After considering energy- efficient broadcasting in such networks, by combining the small-world characteristic of WSNs and the properties of ant algorithm to quickly identify an optimal path, small-world power-aware broadcast algorithm is introduced and evaluated. Given different densities of network, simulation results show that our algorithm significantly improves life of networks and also reduces communication distances and power consumption.展开更多
Problems of the current IGMP mechanism were identified, such as unnecessary periodic probing of hosts and leave latency, which wastes bandwidth and cause more traffic and overhead. Alternative mechanism that preserve ...Problems of the current IGMP mechanism were identified, such as unnecessary periodic probing of hosts and leave latency, which wastes bandwidth and cause more traffic and overhead. Alternative mechanism that preserve the IP multicast model but employ join/leave messages to track local group membership for broadcast LANs (shared medium LANs) was proposed in this paper. We describe the implementation requirements of the new mechanism and compare it to existing one, demonstrating that join/leave approach is uniformly superior for the environment of broadcast LANs.展开更多
阐述广播电视播出中的码流自适应调整技术的现状,介绍基于超文本传输协议(Hyper Text Transfer Protocol,HTTP)的动态自适应流媒体技术的广泛应用及优势。同时,分析高精度码流自适应调整技术面临的挑战,涵盖算法复杂度与实时性冲突、视...阐述广播电视播出中的码流自适应调整技术的现状,介绍基于超文本传输协议(Hyper Text Transfer Protocol,HTTP)的动态自适应流媒体技术的广泛应用及优势。同时,分析高精度码流自适应调整技术面临的挑战,涵盖算法复杂度与实时性冲突、视频编码技术局限性以及设备性能与兼容性问题,并提出相应的对策,旨在为高精度码流自适应调整技术的发展提供理论支持和实践指导。展开更多
文摘Broadcasting is an important operation and been widely used in wireless sensor networks （WSNs）. These networks are power constrained as nodes operate with limited battery power. Wireless sensor networks are spatial graphs that have much more clustered and much high path-length characteristics. After considering energy- efficient broadcasting in such networks, by combining the small-world characteristic of WSNs and the properties of ant algorithm to quickly identify an optimal path, small-world power-aware broadcast algorithm is introduced and evaluated. Given different densities of network, simulation results show that our algorithm significantly improves life of networks and also reduces communication distances and power consumption.
文摘Problems of the current IGMP mechanism were identified, such as unnecessary periodic probing of hosts and leave latency, which wastes bandwidth and cause more traffic and overhead. Alternative mechanism that preserve the IP multicast model but employ join/leave messages to track local group membership for broadcast LANs (shared medium LANs) was proposed in this paper. We describe the implementation requirements of the new mechanism and compare it to existing one, demonstrating that join/leave approach is uniformly superior for the environment of broadcast LANs.
文摘阐述广播电视播出中的码流自适应调整技术的现状,介绍基于超文本传输协议(Hyper Text Transfer Protocol,HTTP)的动态自适应流媒体技术的广泛应用及优势。同时,分析高精度码流自适应调整技术面临的挑战,涵盖算法复杂度与实时性冲突、视频编码技术局限性以及设备性能与兼容性问题,并提出相应的对策,旨在为高精度码流自适应调整技术的发展提供理论支持和实践指导。
