摘要
分析IEEE 802.16的QoS机制,针对其没有详细规定接纳控制算法的情况,结合协议中定义的业务类型QoS特性,在信令交互机制下,提出一种基于优先级的动态带宽分配接纳控制机制。仿真结果表明,与预留带宽的固定带宽分配机制相比,采用该机制后,系统的切换连接掉线率、新增连接的阻塞率和带宽利用率得到改善。
Analyzing the QoS mechanism of IEEE 802.16 and according to the situation that this protocol does not stipulate admission control algorithm detailedly,this paper proposes an improved priority-based dynamic bandwidth allocation admission control mechanism with an agreement in the QoS features of service types and the signaling interactive mechanism.Simulation results show that compared with the fixed bandwidth allocation mechanism in which the bandwidth is reserved,the system handoff connection dropping probability,new connection blocking probability and bandwidth utility can be improved by using this admission control mechanism.
出处
《计算机工程》
CAS
CSCD
北大核心
2010年第10期124-126,共3页
Computer Engineering
