CN103731168A - Method for improving 1M receiving flexibility - Google Patents
Method for improving 1M receiving flexibility Download PDFInfo
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- CN103731168A CN103731168A CN201310654325.7A CN201310654325A CN103731168A CN 103731168 A CN103731168 A CN 103731168A CN 201310654325 A CN201310654325 A CN 201310654325A CN 103731168 A CN103731168 A CN 103731168A
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Abstract
The invention discloses a method for improving 1M receiving flexibility. The method comprises the following steps : (a) setting a plurality of noise-proof grades to transmit wireless signals; (b) improving the receiving flexibility of a wireless receiving device by reducing the noise-proof grades under the test scene; (c) offsetting peripheral radio frequency interference by automatically adjusting the noise-proof grades according to peripheral signal environment during normal work; conducting wireless signal transmission by adopting an AR9342 chip in a wireless access device; dividing the noise-proof grades into nine grades from zero to eight, and setting the noise-proof grades to range from zero to three in the test scene. According to the method for improving the 1M receiving flexibility, the multiple noise-proof grades are set and adjusted to meet the requirements for the test scene and present network use, so that the 1M receiving flexibility is improved to -100dbm, and all different main boards can achieve a good effect, and the yield of products is improved.
Description
Technical field
The present invention relates to a kind of wireless signal processing methods, relate in particular to a kind of improvement method for 1M receiving sensitivity.
Background technology
At present, for the more and more harsher WLAN RF index of operator, RF index becomes an important parameter weighing AP quality.Many wireless access AP products have problems aspect 1M receiving sensitivity, cause the examination of mobile set reconnaissance to be on a sticky wicket.According to previous experiences, receiving sensitivity can improve receiving sensitivity by adjusting RF match circuit around conventionally, and due to factors such as PCB mask-making technology and welding, the method cannot guarantee that all products all reach requirement.Therefore, be necessary to provide a kind of improvement method for 1M receiving sensitivity.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of improvement method for 1M receiving sensitivity, can improve 1M receiving sensitivity to-100dbm, and different mainboard can both reach good effect, has improved the yield of product.
The present invention solves the problems of the technologies described above the technical scheme adopting to be to provide a kind of improvement method for 1M receiving sensitivity, comprises the steps: a) to arrange multiple anti-noise grades and carries out transmission of wireless signals; B) under test scene, by reducing anti-noise grade, improve the receiving sensitivity of radio reception device, to pass through test; C) when normal work, according to periphery signal environment, automatically adjust anti-noise grade and offset periphery radio frequency interference.
The above-mentioned improvement method for 1M receiving sensitivity, wherein, described radio reception device adopts AR9342 chip to carry out transmission of wireless signals.
The above-mentioned improvement method for 1M receiving sensitivity, wherein, described anti-noise grade is divided into 0～8 totally 9 grades, and under test scene, it is 0～3 that anti-noise grade is set.
The above-mentioned improvement method for 1M receiving sensitivity, whether wherein, under test scene, described radio reception device receives the unicast message from the different capacity of tester, and carry out confirmation message and be correctly received by replying ACK bag; If the packet loss of the ACK bag of the unicast message under different capacity is all less than pre-set threshold value, judge that the 1M receiving sensitivity of radio reception device meets test request.
The above-mentioned improvement method for 1M receiving sensitivity, wherein, the pre-set threshold value of described packet loss is 8%.
The present invention contrasts prior art following beneficial effect: the improvement method for 1M receiving sensitivity provided by the invention, by being set, the multiple anti-noise grades of adjustment meet the requirement of test scene and existing network use simultaneously, thereby improve 1M receiving sensitivity to-100dbm, and different mainboards can both reach good effect, improved the yield of product.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that improves for 1M receiving sensitivity of the present invention;
Fig. 2 is the 1M receiving sensitivity test macro configuration diagram based on AR9342 chip that the present invention uses;
Fig. 3 be the present invention use based on section of China Mobile electricity software 1M receiving sensitivity test flow chart;
Fig. 4 be multiple anti-noise grades of using of the present invention adjustment schematic flow sheet is set.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the schematic flow sheet that improves for 1M receiving sensitivity of the present invention.
Refer to Fig. 1, the improvement method for 1M receiving sensitivity provided by the invention comprises the steps:
Step S1: multiple anti-noise grades are set and carry out transmission of wireless signals; Described anti-noise grade is divided into 0～8 totally 9 grades;
Step S2: improve the receiving sensitivity of radio reception device by reducing anti-noise grade under test scene, so that by test; Described radio reception device adopts AR9342 chip to carry out transmission of wireless signals; Under test scene, it is 0～3 that anti-noise grade is set; Whether described radio reception device receives the unicast message from the different capacity of tester, and carry out confirmation message and be correctly received by replying ACK bag; If the packet loss of the ACK bag of the unicast message under different capacity is all less than pre-set threshold value, judge that the 1M receiving sensitivity of radio reception device meets test request; The pre-set threshold value of described packet loss is 8%.
Step S3: automatically adjust anti-noise grade according to periphery signal environment and offset periphery radio frequency interference when normal work.
Improvement method for 1M receiving sensitivity provided by the invention.Take Ke electricity receiving sensitivity testing software of China Mobile as example, as shown in Figure 2, detailed process is as follows for test macro framework:
First, analyze the operation principle of the Ke electricity of China Mobile receiving sensitivity testing software; Secondly, analyze the impact of noise on receiving sensitivity; Finally, by the mode of software modification ANI parameter, realize the improvement of AR9342 chip 1M receiving sensitivity.The operation principle of Ke electricity receiving sensitivity testing software of China Mobile is the information that captures AP by IQView instrument, by IQView instrument, produce the unicast message of different capacity, and the ACK message of replying by AP carrys out confirmation message and whether be correctly received, and judge the receiving sensitivity of AP.
ANI (Adaptive Noise Immunity) Automatic Anti-interference in the present invention is that atheros proposes Anti-Jamming Technique, because noise can have a negative impact to the application of AP, need base band to carry out filtering, this function can be adjusted anti-noise grade automatically according to periphery signal environment, offset periphery radio frequency interference, the anti-noise of atheros is divided into 0～8 totally 9 grades, and higher grade, characterizes noise higher.The present invention maintains suitable grade by software by anti-noise grade, avoids small-signal to be treated as noise and is filtered by base band, uses the test of 1M receiving sensitivity to reach good effect.
Concrete test process is as follows: the first, section's electricity software control instrument is sent out probe request message; The second, AP replys probe reponse message, and section's electricity software may obtain by this mode the relevant information of AP; While three, starting to test, section's electricity software control instrument is sent out the unicast packet of UDP, and message length is 1000 bytes, and progressively reduces transmitting power according to arranging; If four, AP is correct has received and will return ACK by this message, whether section's electricity software returns ACK according to AP just judges whether AP has received message; Five, the ACK number returning as AP is less than the bag number that instrument is sent out, and thinks that AP has Bao Wei to receive, and when packet loss is greater than 8%, thinks failure, as shown in Figure 3.
The present invention, by ANI function is analyzed, dissects from code aspect, has found the inevitable relation of existence between ANI and 1M receiving sensitivity.ANI (Adaptive Noise Immunity) Automatic Anti-interference, this function can be adjusted anti-noise grade automatically according to periphery signal environment, offsets periphery radio frequency interference, and the anti-noise of atheros is divided into 0～8 totally 9 grades.When test, find when anti-noise grade arrives higher grade (>=4) 1M receiving sensitivity meeting variation; Because, when driving discovery ambient noise strong, can increase anti-noise grade, driving can arrange base band register, as shown in Figure 4.This register can allow base band that signal lower some signal strength signal intensities is filtered out; Because base band has filtered out small-signal, thereby caused the test crash of 1M receiving sensitivity, in fact, anti-noise and receiving sensitivity are two conflicting concepts, in reality, should find balance between the two.When the test of test 1M receiving sensitivity, as long as just can guaranteeing the test of 1M receiving sensitivity, the anti-noise grade of reduction CCK passes through.
The present invention, by revising the ANI correlative code of wireless driving, when test 1M receiving sensitivity, makes CCK anti-noise grade in lower grade, the highest can the reach-100dbm of receiving sensitivity.
Although the present invention discloses as above with preferred embodiment; so it is not in order to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little modification and perfect, therefore protection scope of the present invention is worked as with being as the criterion that claims were defined.
Claims (5)
1. for an improvement method for 1M receiving sensitivity, it is characterized in that, comprise the steps:
A) multiple anti-noise grades are set and carry out transmission of wireless signals;
B) under test scene, by reducing anti-noise grade, improve the receiving sensitivity of radio reception device, to pass through test;
C) when normal work, according to periphery signal environment, automatically adjust anti-noise grade and offset periphery radio frequency interference.
2. the improvement method for 1M receiving sensitivity as claimed in claim 1, is characterized in that, described radio reception device adopts AR9342 chip to carry out transmission of wireless signals.
3. the improvement method for 1M receiving sensitivity as claimed in claim 1, is characterized in that, described anti-noise grade is divided into 0～8 totally 9 grades, and under test scene, it is 0～3 that anti-noise grade is set.
4. the improvement method for 1M receiving sensitivity as claimed in claim 1, it is characterized in that, whether, under test scene, described radio reception device receives the unicast message from the different capacity of tester, and carry out confirmation message and be correctly received by replying ACK bag; If the packet loss of the ACK bag of the unicast message under different capacity is all less than pre-set threshold value, judge that the 1M receiving sensitivity of radio reception device meets test request.
5. the improvement method for 1M receiving sensitivity as claimed in claim 4, is characterized in that, the pre-set threshold value of described packet loss is 8%.
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| CN201310654325.7A CN103731168A (en) | 2013-12-06 | 2013-12-06 | Method for improving 1M receiving flexibility |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114337857A (en) * | 2021-12-16 | 2022-04-12 | 西安广和通无线通信有限公司 | Method, device, system and storage medium for testing receiving sensitivity |
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