基于ieee 802.16 mesh网络的跨层设计based on the ieee 802.16 work cross-layer design.docx

CROSS—LAYER DESIGN BASE,D ON IEEE WORK
Wireless work(WM№,a new type of broadband wireless access systems,is a work connecting routers and terminal devices with wireless the characteristics of high rate
and high capacity,WMN is treated as a good alternative to solve the last
mile related standard provides working
model for multi-hop mesh,which call be deployed with higll speed in wide area , work also needs
to face the problems caused by deploying centralized scheduling mechanisms which limits the scalability work,and the troublesome QoS guarantee problems caused by the distributed mechanisms.
In this paper,we studied the def'mition,architecture,characteristics and advantages of the WMN as well as the key technologies and hot
research issues. Focusing on the QoS guarantee,we proposed a design and optimization mechanism for work. In our scheme,we added control module in both Mesh BS and
Mesh SS based on the standard to provide the mutual information and control our mechanism,we can provide QoS
guarantee。especially for the real time services。肠e11 a new Mesh SS
needs to access work,priority based access control mechanism is used to construct work architecture. Single node based path selection scheme is executed with the information provided by the
control module and improves work scalability.
眙analyzed the proposed cross—layer design and optimization mechanism theoretically and with OP№T performance
evaluation results show that the proposed mechanism achieves significant progress in delay,system throughput and packet loss rate over the basic
mechanism in work.
KEY WORDS:wireless work,IEEE 6,cross-layer design, optimization,real time service.
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