摘要
IEEE 80 2 .11是一种无线局域网标准 ,它采用CSMA/CA算法 ,有两种工作模式———DCF和PCF .当无线站点工作于DCF模式时 ,可以方便地构建自组网络 .DCF模式是一种随机的无线信道共享方式 ,不能保障语音、视频等实时业务 .本文按照各种业务的服务需求 ,在DCF中引入并行优先级队列 ,使这些队列接入信道的参数DIFS和CW与各种类型应用相对应 ,从而在MAC层中实现服务区分 .
IEEE 802.11 is a WLAN standard that adopts CSMA/CA algorithm having two kinds work mode - DCF and PCF. When the wireless stations are working under the DCF mode, it is easy to construct Ad hoc. DCF mode is a random wireless channel shared protocol that can't support the voice and video real-time traffic. According to the network traffics characteristic, we introduce multi-parallel priority queue into the radio MAC. Each queue's accessing channel parameter DIFS and CW are corresponding to respective traffic to implement the service differential in the radio MAC.
出处
《小型微型计算机系统》
CSCD
北大核心
2003年第12期2128-2131,共4页
Journal of Chinese Computer Systems
