Data scheduling device and method supporting service quality in wireless MESH network

A quality of service, data scheduling technology, applied in the direction of network traffic/resource management, wireless communication, electrical components, etc., can solve the problems of poor bandwidth utilization, imperfect scheduling mechanism, etc., to achieve the effect of optimizing bandwidth utilization

Active Publication Date: 2010-09-01
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the defects of poor bandwidth utilization and imperfect scheduling mechanism of existing data scheduling ...

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  • Data scheduling device and method supporting service quality in wireless MESH network
  • Data scheduling device and method supporting service quality in wireless MESH network
  • Data scheduling device and method supporting service quality in wireless MESH network

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Embodiment Construction

[0031] A data scheduling apparatus and method for supporting quality of service in a wireless mesh network (MESH) provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] figure 1 The structure of the data scheduler according to an embodiment of the present invention is shown, such as figure 1 As shown, the present invention provides a data scheduling apparatus for supporting quality of service in a wireless mesh network (MESH), the data scheduling apparatus including a two-level scheduler located at a source node and a target node. Wherein, the first-level scheduler located at the target node includes a service classification manager, a scheduling queue selector I, a transmission mode selector, a bandwidth allocator I and a user bandwidth statistician. The secondary scheduler located at the source node includes scheduling queue selector II, bandwidth allocator II and data mapper.

[00...

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Abstract

The invention provides a data scheduling device and a method supporting service quality in a wireless MESH network. The device of the invention comprises two schedulers, wherein in the primary scheduler, a service sorting manager queues requests according to service types; a scheduling queue selector I selects a request queue to be scheduled; a bandwidth allocator I virtually allocates bandwidths; a transmission mode selector provides a modulation encoding mode corresponding to connection; a user bandwidth statistic device combines discontinuous bandwidths into continuous bandwidth and sends a primary scheduling result to a source node; in the secondary scheduler, a scheduling selector II selects service of priority scheduling from the service queue; a bandwidth allocator II computes the largest/smallest sending quantity of the frame, differentiates the grades of the services and schedules the services frame by frame; and a data mapper sends the scheduled data to a physical layer and transmits to a destination node.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and more particularly, the present invention relates to a data scheduling apparatus and method for supporting quality of service in a wireless mesh network (MESH). Background technique [0002] IEEE 802.16 Wireless Metropolitan Area Network (Wireless MAN) is a broadband network capable of providing high-speed wireless access within the metropolitan area, and two modes are defined: point-to-multipoint (PMP) mode and mesh network (MESH) mode. In the MESH mode, the data scheduler that supports QoS serves services based on connections, maps each service to a service type, and the scheduler adopts different scheduling strategies for different service types. Each service connection is associated with a set of service quality parameters, and the service quality parameters of the service connection will be transmitted between adjacent nodes of the entire path through a three-way ha...

Claims

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Application Information

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IPC IPC(8): H04W28/08H04W28/10H04W28/20H04W28/24
Inventor 张晶周俊胡金龙丁亚南杨发森石晶林
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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