Ad Hoc network MAC layer QoS guarantee method based on IEEE802.16

A network and detection method technology, applied in network topology, electrical components, wireless communication, etc., can solve problems such as resource scheduling algorithm specification, and achieve the effects of ensuring throughput, improving QoS guarantee methods, and increasing time slot utilization.

Inactive Publication Date: 2009-06-17
BEIJING JIAOTONG UNIV
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Problems solved by technology

However, the MAC layer protocol standard in IEEE802.16 Mesh mode does not specify t...

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  • Ad Hoc network MAC layer QoS guarantee method based on IEEE802.16
  • Ad Hoc network MAC layer QoS guarantee method based on IEEE802.16
  • Ad Hoc network MAC layer QoS guarantee method based on IEEE802.16

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Embodiment Construction

[0040] Such as figure 1 Shown is the principle block diagram of the IEEE802.16 QoS guarantee method of the present invention.

[0041] Resource scheduling method:

[0042]When a real-time service is transmitted on an Ad Hoc network, if it goes through multiple hops, its delay performance will be greatly affected. Therefore, the network needs to pay attention to ensure the delay performance of the real-time services forwarded by multiple hops. Therefore, this patent preliminarily compensates the time delay effect caused by the application of real-time services to multi-hop networks by improving the service priority level for multi-hop forwarding real-time services. Therefore, the authorization node can maintain three request queues: the first one is the real-time service forwarded by other nodes to the requesting node, and the requesting node forms a multi-hop forwarding real-time service request queue for requesting service transmission to the authorization node; the second ...

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Abstract

The invention relates to a method for guaranteeing Ad Hoc network MAC layer QoS on the basis of IEEE802.16. The method comprises a resource scheduling method, a reserving method and a congestion detecting method according to the characteristics of an Ad Hoc network and on the basis of MAC layer QoS guarantee frame under an IEEE802.16 Mesh mode. The resource scheduling method which is designed by the invention takes the influence of a multi-hop network on real time service delay into account, the priority level of real time services is improved, and the refused possibility of the real time services due to overtime transmission is reduced. The method dynamically changes the resource reservation step-length according to the service request conditions and solves the problems that an original DSA algorism changes resource reservation with fixed step-length and service demands can not be satisfied in time, thereby increasing the slot efficiency. The adoption of the congestion detecting method enables an authorized node to detect the congestion states of the network in time, and certain measures can be adopted.

Description

technical field [0001] The invention relates to an IEEE802.16-based Ad Hoc network MAC layer QoS guarantee method, which belongs to the field of Ad Hoc network system cross-layer design and service quality management. Background technique [0002] Ad Hoc technology has become a hot spot in the field of wireless communication research. With the deepening of the research, the application environment of the wireless Ad Hoc network requires that it must provide a certain quality of service (QoS) guarantee. However, the MAC layer protocol standard in IEEE802.16 Mesh mode does not specify the resource scheduling algorithm in detail, leaving extensive research space for designers. [0003] According to the characteristics of the Ad Hoc network, the present invention designs a resource scheduling and reservation method based on the QoS guarantee framework of the MAC layer in the IEEE802.16 Mesh mode; and proposes a congestion detection method based on the theory of cross-layer desi...

Claims

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Application Information

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IPC IPC(8): H04W72/12H04W84/18
Inventor 李旭崔蕾申宏刚
Owner BEIJING JIAOTONG UNIV
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