摘要： 针对无线传感器网络带宽与能量受限问题，以最大化频谱利用和最小化频谱切换为目标，兼顾优先级和公平性指标，构造最大化系统整体性能的目标函数。在此基础上，提出一种适合无线传感器网络的动态频谱分配方案。仿真结果表明，该频谱分配方案在考虑优先级的同时能够公平地分配频谱资源，实现最小化频谱切换。
关键词:
无线传感器网络,
认知无线电,
动态频谱分配
Abstract: Aiming to bandwidth-constrained and energy-constrained problems in wireless sensor networks, to maximize spectrum utilization and minimize spectrum handoffs, taking the priority and fairness of nodes into consideration, the objective function of maximize-system-performance is constructed. A dynamic spectrum allocation scheme is proposed, which fits the sensor networks effectively. Simulation result shows that the scheme allocates spectrum resources fairly while observing each sensor’s priority and nearly minimal spectrum handoffs.
Key words:
Wireless Sensor Networks(WSN),
cognitive radio,
dynamic spectrum allocation
中图分类号:
周来秀, 邓曙光, 杨冰. 无线传感器网络动态频谱分配方案[J]. 计算机工程, 2010, 36(14): 99-101.
ZHOU Lai-Xiu, DENG Shu-Guang, YANG Bing. Dynamic Spectrum Allocation Scheme in Wireless Sensor Networks[J]. Computer Engineering, 2010, 36(14): 99-101.