摘要： 在WiMAX Mesh网络中，资源分配可由集中式和分布式2种调度机制完成，但多数QoS研究只针对一种调度机制。针对上述情况，提出结合2种调度机制的QoS保障机制CDCSQ，针对不同的服务采用不同的调度机制以改进QoS，其中，集中式调度用于保证实时服务，分布式调度确保Mesh内部节点的直接通信。模拟结果表明，该机制比IEEE 802.16标准中的服务延迟小。
关键词:
WiMAX Mesh网络,
QoS保障,
集中式调度,
分布式调度
Abstract: In Worldwide Interoperability of Microwave Access(WiMAX) Mesh network, resource allocation can be handled by centralized schedule scheme and distributed schedule scheme, but most QoS researches focus on one of the schemes. This paper proposes a QoS guarantee mechanism named CDCSQ(Combined Distributed and Centralized Schedule QoS), which combines the two schedule schemes. QoS is improved by adopting different schedule schemes for different services. Centralized schedule is used to guarantee real-time services and distributed schedule is used to enable direct communication between two nodes in Mesh network. Simulation results show that the service delay of the mechanism is less than that of IEEE 802.16 standard.
Key words:
Worldwide Interoperability of Microwave Access(WiMAX) Mesh network,
QoS guarantee,
centralized schedule,
distributed schedule
中图分类号:
赵元韬;杨寿保;滕 达;黄彦彬;赫卫卿. WiMAX Mesh网络混合调度下的QoS保障[J]. 计算机工程, 2010, 36(5): 86-88.
ZHAO Yuan-tao; YANG Shou-bao; TENG Da; HUANG Yan-bin; HE Wei-qing. QoS Guarantee Under Combined Schedule in WiMAX Mesh Network[J]. Computer Engineering, 2010, 36(5): 86-88.