Joint on-demand routing and spectrum assignment in Cognitive Radio Networks

被引：116

作者：

Cheng, Geng ^{[1
]}

Liu, Wei ^{[1
]}

Li, Yunzhao ^{[1
]}

Cheng, Wenqing ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Elect & Informat Engn Dept, Wuhan 430074, Peoples R China

来源：

2007 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-14 | 2007年

关键词：

Cognitive Radio Network; spectrum assignment; scheduling; routing;

D O I：

10.1109/ICC.2007.1075

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In Cognitive Radio Networks, nodes can work on different frequency bands. Existing routing proposals help nodes select frequency bands without considering the effect of band switching and intra-band backoff. In this paper, We propose a joint interaction between on-demand routing and spectrum scheduling. A node analytical model is proposed to describe the scheduling-based channel assignment progress, which relief the inter-flow interference and frequent switching delay. We also use an on-demand interaction to derive a cumulative delay based routing protocol. Simulation results show that, comparing to other approaches, our protocol provides better adaptability to the multi-flow environment and derives paths with much lower cumulative delay.

引用

页码：6499 / 6503

页数：5