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Method and device for detecting link keep-alive between ac and ap

A link keep-alive, maximum retransmission interval technology, applied in the direction of error prevention/detection through transmission repetition, digital transmission system, network topology, etc., can solve the problem of frequent offline AP

Active Publication Date: 2016-08-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The main purpose of the present invention is to provide a method and device for detecting link keep-alive between AC and AP, aiming to solve the problem of frequent offline AP caused by link degradation

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  • Method and device for detecting link keep-alive between ac and ap
  • Method and device for detecting link keep-alive between ac and ap
  • Method and device for detecting link keep-alive between ac and ap

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Embodiment Construction

[0048] The solution of the embodiment of the present invention is mainly: by setting the maximum allowable failure times of the heartbeat keep-alive, and setting the maximum retransmission interval based on the maximum allowable failure times of the heartbeat keep-alive and the heartbeat keep-alive period, the link between the AC and the AP Keep-alive detection to avoid frequent AP offline and frequent AP rejoining caused by link degradation, affecting user experience.

[0049] Such as figure 2 As shown, an embodiment of the present invention proposes a detection method for link keep-alive between AC and AP, including:

[0050] Step S101, setting the maximum allowable number of heartbeat keep-alive failures;

[0051] Considering that the packets sent by the AP and AC may be delayed or lost when the link is degraded or unstable, only detecting keep-alive packets or retransmitting response packets within one heartbeat keep-alive period will cause the AP to Frequent offline ca...

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Abstract

The invention relates to a method and device for detecting link keep-alive between AC and AP. The method includes: setting the maximum allowable failure times of heartbeat keep-alive; retransmitting the heartbeat message or message, and based on the maximum allowable failure times of heartbeat keep-alive Perform link keep-alive detection between the AC and AP. The present invention sets the maximum allowable failure times of heartbeat keep-alive, and sets the maximum retransmission interval based on the maximum allowable failure times of heartbeat keep-alive and the heartbeat keep-alive cycle, and performs link keep-alive detection between AC and AP, which can effectively avoid Frequent AP offline and AP rejoin caused by link degradation affect user experience. <!--1-->

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method for detecting and keeping alive a link between an AC (Access Controller, wireless access controller) and an AP (Access Point, wireless access point) in a wireless local area network (WLAN, Wireless Local Area Network). device. Background technique [0002] Existing WLAN networks generally adopt a thin AP architecture of a wireless access point (AP, AccessPoint) plus a wireless access controller (AC, AccessController). In this thin AP architecture, the AC manages the AP uniformly through the Wireless Access Point Control Configuration Protocol (CAPWAP, ControlAndProvisioningofWirelessAccessPointsProtocol). Such as figure 1 as shown, figure 1 It is a WLAN networking diagram under the thin AP architecture in the prior art, figure 1 The dotted line is the CAPWAP protocol. [0003] The CAPWAP protocol defines two criteria for the AC to determine th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02
CPCH04L43/0811H04L1/188H04L43/10H04L1/08H04W84/12
Inventor 刘杨池艳广
Owner ZTE CORP