A method and system for obtaining terminal communication link quality

Abstract

Disclosed in the embodiments of the present invention are a method, network access device, and system for obtaining the quality of a terminal communication link. The method comprises: counting the proportion of the number of consecutive transmission failures within a preset length of time when a data packet corresponding to a service is transmitted by a network access device to a mobile terminal; determining whether the number or proportion of consecutive transmission failures is greater than or equal to a preset threshold value and determining, when said number or proportion equals or exceeds the threshold value, that the communication link quality of the service of the mobile terminal is unable to satisfy the requirements of communication. The technical solution provided by the embodiments of the present invention allows information on the status of the mobile terminal when said terminal leaves a network access device to be known in a timely fashion.

Description

technical field [0001] The present invention relates to wireless local area network (WLAN, Wireless Local Area Networks) technology, in particular to a method and system for acquiring terminal communication link quality. Background technique [0002] According to market research, it is found that smart mobile terminals such as iPhone, BlackBerry and other smart phones are occupying a higher and higher market share in the terminal market. Compared with ordinary mobile terminals, smartphones have an independent operating system and are installed with many software and games provided by third-party service providers. The use of such programs will generate a large amount of network traffic. For example, AT&T The company's data shows that: iPhone users only account for 3% of AT&T's total customers, but the network traffic generated by iPhone users is 40% of the total traffic. [0003] With the rapid increase of smart mobile terminal users, and limited by technology and cost, the...

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Problems solved by technology

[0008] However, in the above-mentioned technical solution, when the multi-mode intelligent mobile terminal leaves the base station, since the base station does not know the signal quality, it cannot judge whether the signal quality meets the requirements of normal communication, so the trigger condition will not be reported to the LMA, and the LMA will not The data flow of the service will be migrated from the WLAN port to other ports. In this way, the service of the multi-mode intelligent mobile terminal will be interrupted. The specific analysis is as follows:

[0009] First of all, the WLAN system is a "best effort" packet-division communication system. There is no heartbeat signaling between the multi-mode smart mobile terminal and the base station, and when the multi-mode smart mobile terminal leaves the base station, it does not necessarily send a message to the base station. Leaving message, so the base station cannot perceive the departure of the multi-mode intelligent mobile terminal;

[0010] Secondly, since there is no signaling or protocol in IEEE802.11 to support the mobile terminal to report its own wireless information to the network side, when the multi-mode intelligent mobile terminal leaves the base station, it cannot report its own situation;

[0011] Third, since the local mobility management is adopted for the multi-mode smart mobile terminal, the multi-mode smart mobile terminal cannot perceive the existence of LMA, therefore, the multi-mode smart mobile terminal cannot trigger the data flow of the LMA migration service through Layer 3 signaling

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