关键词: 认知无线电网络, 端到端, 服务质量, 流量需求, 流内竞争

Abstract: General wireless network routing algorithms can not be directly used to cognitive radio network, therefore a new routing algorithm needs to be proposed to satisfy the endtoend QoS performance in cognitive radio network. Nodes in the cognitive radio network can select channels and switch between spectrums autonomously, trying the best to meet capacity demand and avoid intraflow competition. Being combined with the basic process of ondemand routing and taking full account of the influence of channel capacity and interference arising from intraflow competition on the routing selection, the routing algorithm based capacity and interference which was suitable for cognitive radio network was proposed. The experimental results show that the routing algorithm based on the capacity and interference has better endtoend QoS performance compared with other two algorithms.

Key words: cognitive radio network, end-to-end, Quality of Service (QoS), capacity demand, intra-flow competition