Wireless Mesh network MAC layer resource scheduling policy based on IEEE802.16d standard

A resource scheduling and standard technology, applied in the direction of network traffic/resource management, wireless communication, data exchange network, etc., can solve the problem of system throughput reduction and other issues

Inactive Publication Date: 2008-10-15
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0007] When there is only one type of service in the network, in order to ensure the fairness between each service flow, a fair end-t

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  • Wireless Mesh network MAC layer resource scheduling policy based on IEEE802.16d standard
  • Wireless Mesh network MAC layer resource scheduling policy based on IEEE802.16d standard
  • Wireless Mesh network MAC layer resource scheduling policy based on IEEE802.16d standard

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Embodiment Construction

[0055] The present invention will be further described below in conjunction with the accompanying drawings.

[0056] Such as figure 1 As shown in Fig. 1, first judge the service flow in the network to determine whether the network is single-service or multi-service. If it is a single-service network, each node maintains two types of queues for each of its neighbor nodes when certain conditions are met. : Request queue and grant queue. In order to ensure the fairness between each service flow, a fair end-to-end resource scheduling method is adopted to ensure the fairness of each service flow; if it is a multi-service network, according to the QoS characteristics of each service flow , classify the packets received by the upper layer and enter the corresponding queues respectively. Each node maintains four types of queues: active authorization service queue, real-time polling service queue, non-real-time polling service queue and best-effort service queue. A dynamic bandwidth ...

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Abstract

The invention relates to a wireless Mesh network MAC layer resource scheduling strategy based on standard of IEEE802.16d, which solves the problems of fairness in single service resource scheduling and the quality of service (QoS) during multi-service resource scheduling to certain extent. When only the single service exists in the network, every node establishes two types of queues, namely, a request queue and an authorization queue; round-robin scheduling towards each queue ensures fair resource occupation of each type of service flow, which comprises bandwidth request/authorization mechanism, scheduling mechanism, time slot distribution mechanism and compensation mechanism; under the circumstance of multi-service, different priorities can be set to various different service flows according to the differences of service real-time request so as to distribute bandwidth dynamically and improve the throughput of the system as far as possible with the premise of meeting the quality of service (QoS) of each type of service flow, which comprises classification mechanism, bandwidth reservation mechanism and degrading mechanism.

Description

technical field [0001] The invention belongs to the field of wireless Mesh network communication, and is based on the IEEE802.16d standard, aiming at the resource scheduling strategy proposed by the MAC layer of the wireless Mesh network. Background technique [0002] The quality of the MAC layer protocol directly affects the quality of network throughput, delay and other performance indicators. How to solve the problem of multiple users efficiently and reasonably sharing limited wireless channel resources is a problem to be solved by the MAC layer protocol. And as wireless Mesh supports more and more types of services, different services require different quality of service (QoS), how to ensure different QoS requirements of different types of services is a problem that needs to be studied and solved by MAC layer scheduling. [0003] Although the IEEE 802.16-2004 standard specifies the MAC layer protocol of the Mesh mode, the MAC layer protocol does not describe the bandwid...

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Application Information

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IPC IPC(8): H04L12/56H04L29/08H04W28/26H04W72/12
Inventor 李旭申宏刚石靖
Owner BEIJING JIAOTONG UNIV
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