CAJ | 학술논문

针对目前经典的本地协作多信道 MAC 协议（LCM-MAC）缺乏频谱感知和带宽动态分配问题，提出一种认知无线电自组织网络（cognitive radio Ad hoc networks，CRAHNs）带宽动态分配多信道 MAC（CR-LMAC）协议。通过引入频谱感知机制和新的带宽分配策略模型，改进 LCM-MAC 协议，使其具备空闲信道感知和动态分配带宽的自适应能力。仿真结果表明，改进后的协议性能优于 LCM-MAC，在网络总吞吐量和端到端时延等方面有较大提高和改善。
침대목전경전적본지협작다신도 MAC 협의（LCM-MAC）결핍빈보감지화대관동태분배문제，제출일충인지무선전자조직망락（cognitive radio Ad hoc networks，CRAHNs）대관동태분배다신도 MAC（CR-LMAC）협의。통과인입빈보감지궤제화신적대관분배책략모형，개진 LCM-MAC 협의，사기구비공한신도감지화동태분배대관적자괄응능력。방진결과표명，개진후적협의성능우우 LCM-MAC，재망락총탄토량화단도단시연등방면유교대제고화개선。
A multi-channel MAC (CR-LMAC)protocol for dynamic bandwidth allocation in cognitive radio wireless Ad hoc net-work is proposed to solve the problem of the classic local cooperative multi-channel MAC protocol (LCM-MAC)that lacks spec-trum sensing and dynamic bandwidth allocation.The LCM-MAC protocol is improved by introducing the spectrum sensing capa-bilities and a new bandwidth allocation strategy model into its framework and has the adaptive ability of sensing idle channel and dynamically allocating bandwidth.Simulation results show that the improved protocol has a great improvement in overall network throughput and the end to end delay,and has a better performance than the original LCM-MAC protocol.