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Dynamic distribution method for radio local area network uplink bandwidth

A wireless local area network, dynamic allocation technology, applied in data exchange network, data exchange through path configuration, digital transmission system, etc., can solve the problem of not considering the fairness of the operator's QSTA, so as to improve the total throughput and bandwidth utilization efficiency, ensuring fairness, and saving system bandwidth

Inactive Publication Date: 2012-01-04
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, from the perspective of network operation, the EDCA control strategy does not take into account the need for operators to ensure the fairness of each QSTA

Method used

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  • Dynamic distribution method for radio local area network uplink bandwidth
  • Dynamic distribution method for radio local area network uplink bandwidth
  • Dynamic distribution method for radio local area network uplink bandwidth

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Embodiment Construction

[0025]The present invention designs a Dynamic Bandwidth Allocation (DBA, Dynamic Bandwidth Allocation) method on the premise of complying with IEEE802.11e stipulations on the HCCA mechanism, so as to realize the access control of QAP to each QSTA and even various services. This DBA method can not only prevent the conflict of the uplink data of each QSTA in the Infrastructure type WLAN system, but also manage each QSTA according to the uplink bandwidth agreement signed by each user (for example, the guaranteed bandwidth stipulated in the Service Level Agreement (SLA, Service Level Agreement)) The uplink bandwidth provides operators with a flexible and reliable bandwidth management method. The present invention will be further described through specific embodiments below in conjunction with the accompanying drawings.

[0026] In the embodiment of the present invention, by configuring the HC on the QAP, the HC performs uplink access control on the QSTA according to the DBA method...

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Abstract

The invention provides a dynamic distribution method for a radio local area network uplink bandwidth and is applied to a radio local area network of an infrastructure mode formed by QAP and a plurality of QATAs. The method comprises: distributing, for all the QATAs, fixed bandwidths used for sending a voice service, distributing a bandwidth application value of a video detection service of each QSTA and ensuring a relative small one of the bandwidths; determining the finally distributed bandwidth of the video service of each QSTA through a primary distribution step and a secondary distribution step; and averagely distributing the residual bandwidth of the system uplink available bandwidth to the QSTA applying for the service. According to the method of the invention, the invention not only provides a QoS guarantee for the service, but also can ensure the justification of each QSTA.

Description

technical field [0001] The invention relates to the technical field of wireless local area network (WLAN, Wireless Local Access Network), in particular to a method for dynamically allocating uplink bandwidth of a wireless local area network. Background technique [0002] The emergence and rapid development of WLAN has greatly enriched the access technology, but most of the current WLANs only provide "best effort" (Best effort) services, which cannot meet the requirements of service quality (QoS, Quality of service), especially high-quality QoS requirements for delay-sensitive multimedia services such as voice and video. For this reason, IEEE has formulated a new protocol IEEE802.11e, which defines four service types from high to low priority: voice service (voice), video service (video), video detection service (videoprobe) and best effort service (best effort); a hybrid coordination mechanism (Hybrid Coordination Function, abbreviated as HCF) is introduced to enhance the W...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/28H04L47/76
Inventor 张民陈雪张郭
Owner BEIJING UNIV OF POSTS & TELECOMM