CN102256291A - Wireless access device detection method and system - Google Patents
Wireless access device detection method and system Download PDFInfo
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- CN102256291A CN102256291A CN2011101928127A CN201110192812A CN102256291A CN 102256291 A CN102256291 A CN 102256291A CN 2011101928127 A CN2011101928127 A CN 2011101928127A CN 201110192812 A CN201110192812 A CN 201110192812A CN 102256291 A CN102256291 A CN 102256291A
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Abstract
The invention provides wireless access device detection method and system. The method comprises the following steps: a wireless access point (AP) to be detected transmits a test message through multithread, wherein the test message carries identification information of the AP; a wireless station (STA) receives and demodulates the test message transmitted by the multithread, and if the STA acquires the identification information of the AP by demodulating the test message, the fact that the AP does not have any fault can be acquired. According to the wireless access device detection method and system provided by the invention, the comprehensive and accurate detection of the AP comprising multiple antennas can be realized.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of radio reception device detection method and system.
Background technology
Multiple-input and multiple-output (Multiple-Input Multiple-Out-Put, MIMO) technology is a core technology that applies to standard 802.11n, it improves transmission of Information speed by increasing the quantity of transmitting antenna and reception antenna.At present, the MIMO technology be widely used in WLAN (wireless local area network) (WirelessLocal Area Network, WLAN) in.In the WLAN (wireless local area network) of having used the MIMO technology, because radio reception device (Access Point, AP) can realize multiple modulation rate (being generally 1 to 4 stream), realize that the multithread message sends so need have many antennas, and required antenna amount must be not less than the quantity of stream, and for example the most frequently used AP comprises 2 antennas or 3 antennas at present.
In the prior art, when AP was detected, by beacon (beacon) message of wireless stations (STA) scanning AP transmission to be measured, wherein this beacon message passed through an antenna transmission by AP usually.If STA can scan this AP, think that then this AP is in normal condition.
When utilizing said method to detect AP, be merely able to detect the connectedness of the antenna that is used to send the beacon message, for the AP that comprises many antennas, then can not know the connectedness of other antennas of this AP, promptly can not carry out comprehensively, detect exactly many antenna connectivity of AP.
Summary of the invention
At above-mentioned defective, the invention provides radio reception device detection method and system, the antenna connectivity of the AP that comprises many antennas is carried out comprehensively, detected exactly realizing.
The invention provides a kind of radio reception device detection method, comprising:
AP multithread to be detected sends test packet, and described test packet carries the identification information of described AP;
The test packet that wireless stations STA receives and the described multithread of demodulation sends if described STA gets access to the identification information of described AP by the described test packet of demodulation, knows that then described AP does not break down.
According to a further aspect in the invention, also provide a kind of radio reception device detection system, comprise AP and STA, wherein:
Described AP is used for multithread and sends test packet, and described test packet carries the identification information of described AP;
The test packet that described STA is used to receive and the described multithread of demodulation sends if described STA gets access to the identification information of described AP by the described test packet of demodulation, knows that then described AP does not break down.
According to radio reception device detection method of the present invention and system, because AP adopts the multithread technology to carry the test packet of AP identification information by self many antenna transmission, so have only when the many antennas of this AP all can normally be communicated with, test packet successfully could be sent, make STA to obtain the entrained AP identification information of this message, thereby determine that the AP corresponding with this AP identification information do not break down according to the test packet that scans; Otherwise, if STA does not get access to the identification information of AP to be detected, can think that then this AP to be detected has at least 1 antenna to have connected trouble, can be keeped in repair the antenna of this AP this moment by the testing staff, for example attempt screwing antenna or changing antenna etc., do not disappear yet if carry out this type of maintenance back phenomenon of the failure, can know that then there is the system failure in this AP.As can be seen, by the radio reception device detection method of the foregoing description, can detect the upstate of the included a plurality of antennas of AP system and AP simply, effectively.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of radio reception device detection method of the present invention.
Fig. 2 is the structural representation of radio reception device detection system of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 is the schematic flow sheet of radio reception device detection method of the present invention.As shown in fig. 1, this radio reception device detection method may further comprise the steps:
Step S1, AP multithread to be detected sends test packet, and described test packet carries the identification information of described AP;
Particularly, AP to be detected carries out multithread based on the MIMO technology to the test packet of the identification information that carries this AP and sends, handle when promptly modulating with sky, be mapped to different information symbols, the information symbol that is shone upon is launched by many antennas respectively test packet.Wherein, the identification information of AP can for the unique corresponding any identification information of AP, for example be the MAC Address of AP; And the quantity of " stream " that the multithread of being adopted sends should be less than or equal to the quantity of the included antenna of this AP.
The test packet that step S2, STA receive and the described multithread of demodulation sends if described STA gets access to the identification information of described AP by the described test packet of demodulation, knows that then described AP does not break down.
Wherein, STA is for example for supporting the portable detecting devices of multithread message demodulation.When detecting, the testing staff closes on AP to be measured with STA and places, and STA carries out the message scanning in its coverage automatically.If STA scans multipath signal, promptly by the different information symbols by same test packet mapping of different antennae emission, then STA collects and carries out demodulation corresponding to the multipath signal of same test packet and to it; If this STA has scanned whole multipath signals of same test packet, then can obtain original test packet, thereby obtain the identification information of the entrained AP of this test packet by demodulation.The testing staff compares the identification information of the AP that STA scanned with the identification information of the AP to be detected that knows in advance, if both unanimities, can determine that then the test packet that AP sent corresponding with this identification information can successfully be received by STA, promptly this AP handles normal condition at present, does not break down.
In addition, STA may only scan the part multipath signal of this test packet, AP for example to be detected carries out 4 streams by 4 antennas with test packet and sends (promptly having 4 and the corresponding multipath signal of this test packet), and owing to have 1 to break down unavailable in 4 antennas of AP, make that only 3 multipath signals succeed in sending up, so the time STA be merely able to scan 3 multipath signals of this test packet.When STA separates timing owing to mistake appears in loss of learning to these 3 multipath signals, can not successfully obtain original test packet, so can't obtain the identification information of the entrained AP of this test packet.
Radio reception device detection method according to the foregoing description, because AP adopts the multithread technology to carry the test packet of AP identification information by self many antenna transmission, so have only when the many antennas of this AP all can normally be communicated with, test packet successfully could be sent, make STA to obtain the entrained AP identification information of this message, thereby determine that the AP corresponding with this AP identification information do not break down according to the test packet that scans; Otherwise, if STA does not get access to the identification information of AP to be detected, can think that then this AP to be detected has at least 1 antenna to have connected trouble, can be keeped in repair the antenna of this AP this moment by the testing staff, for example attempt screwing antenna or changing antenna etc., do not disappear yet if carry out this type of maintenance back phenomenon of the failure, can know that then there is the system failure in this AP.As can be seen, by the radio reception device detection method of the foregoing description, can detect the upstate of the included a plurality of antennas of AP system and AP simply, effectively.
Further, in the radio reception device detection method of the foregoing description, described test packet for example is beacon (beacon) message or detection response message.
Wherein, STA can adopt active scan or drive sweep dual mode that AP is detected, and it can be by being provided with the active scan network interface card or the drive sweep network interface card is realized in STA.Particularly, when test packet was the beacon message, STA carried out drive sweep, and promptly STA scans the identification information of finding AP behind the beacon message and obtaining AP; When STA adopted active scan, STA sent the probe requests thereby message and waits for that AP responds detection response message to AP to be detected, to obtain the identification information of AP from detection response message.
Further, in the radio reception device detection method of the foregoing description, when test packet was the beacon message, AP multithread to be detected sent before the step of test packet, also comprises:
Described AP switches to detected state from operating state; Wherein, described AP comprises operating state and detected state, and described AP when in running order single current send described beacon message, multithread sent described beacon message when described AP was in detected state.
Particularly, for example be provided with on the AP and be used to be implemented in the diverter switch of switching mutually between operating state and the detected state, or when detecting, make AP enter detected state by software setting by the testing staff.
Radio reception device detection method according to the foregoing description, because AP can distinguish operating state and detected state, so that AP only under detected state multithread send the beacon message, next in working order single current sends the beacon message, thereby guarantee in the conventional use of this AP compatibility with the STA of low rate, avoid not causing the beacon message to take defeat, thereby cause the radio communication fault because of STA does not support the multithread message.
Further, in the radio reception device detection method of the foregoing description, described multithread is sent as double fluid and sends.Wherein, double fluid is sent as at present the most frequently used multithread and sends, and at this moment, AP has 2～3 antennas usually and sends to realize double fluid.
Particularly, if AP comprises 2 antennas, i.e. the 1st antenna and the 2nd antenna, then described AP sends beacon message or detection response message by described the 1st antenna and described the 2nd antenna double fluid.At this moment,, get access to AP identification information (for example being MAC Address), know that then this AP to be detected does not break down corresponding to AP to be detected if STA successfully scans and demodulation this beacon message or detection response message.
Further, in the radio reception device detection method of the foregoing description, test packet comprises beacon message and detection response message.For example, if AP comprises 3 antennas, i.e. the 1st antenna, the 2nd antenna and the 3rd antenna, then AP sends detection response message by the double-current beacon message that sends of 2 antennas (for example being the 1st antenna and the 2nd antenna) wherein by any 1 antenna in these 2 antennas and the above-mentioned untapped double fluid of 1 antenna (for example the 2nd antenna and the 3rd antenna) in addition.At this moment, be used to carry out the STA that AP detects and dispose active scan network interface card and drive sweep network interface card simultaneously, wherein the drive sweep network interface card is used for scanning and demodulation beacon message, the active scan network interface card is used for scanning and demodulation detection response message, takes the availability that identification information that can these two network interface cards get access to AP to be detected can be judged this AP into consideration.
More specifically, if described active scan network interface card and described drive sweep network interface card all obtain the identification information of described AP, know that then described AP does not break down;
If described active scan network interface card obtains the identification information of described AP and the identification information that described drive sweep network interface card does not obtain described AP, know that then the 3rd antenna of described AP breaks down;
If described active scan network interface card does not obtain the identification information of described AP and the identification information that described drive sweep network interface card obtains described AP, know that then the 1st antenna of described AP breaks down;
If described active scan network interface card and described drive sweep network interface card all do not obtain the identification information of described AP, know then that described the 2nd antenna breaks down or described the 1st～the 3rd antenna at least two antennas break down, for example the 1st antenna and the 3rd antenna break down, or described AP generation systems fault.
In addition, if AP comprises 4 antennas, promptly the 1st antenna～the 4th antenna then can utilize other 2 antennas (for example being the 3rd antenna and the 4th antenna) double fluid to send detection response message by AP by the double-current beacon message that sends of any 2 antennas (for example being the 1st antenna and the 2nd antenna) wherein.Specific implementation process and above-mentioned AP comprise that the situation of 3 antennas is similar, so repeat no more.
According to the radio reception device detection method of the foregoing description,, realized complete detection for AP with 3 antennas by sending test packet by the AP double fluid.
Fig. 2 is the structural representation of radio reception device detection system of the present invention.As shown in Figure 2, this radio reception device detection system comprises AP 21 and STA 22.
Wherein, AP 21 is used for multithread and sends test packet, and described test packet carries the identification information of AP 21;
The test packet that STA 22 is used to receive and the described multithread of demodulation sends if STA 22 gets access to the identification information of AP 21 by the described test packet of demodulation, knows that then AP 21 does not break down.
The radio reception device detection system of the foregoing description is identical with the radio reception device detection method of the foregoing description to the flow process that AP detects, so locate to repeat no more.
Radio reception device detection system according to the foregoing description, because AP adopts the multithread technology to carry the test packet of AP identification information by self many antenna transmission, so have only when the many antennas of this AP all can normally be communicated with, test packet successfully could be sent, make STA to obtain the entrained AP identification information of this message, thereby determine that the AP corresponding with this AP identification information do not break down according to the test packet that scans; Otherwise, if STA does not get access to the identification information of AP to be detected, think that then this AP to be detected has at least 1 antenna to have connected trouble, can be keeped in repair the antenna of this AP this moment by the testing staff, for example attempt screwing antenna or changing antenna etc., do not disappear yet if carry out this type of maintenance back phenomenon of the failure, can know that then there is the system failure in this AP.As can be seen, by the radio reception device detection method of the foregoing description, can detect the upstate of the included a plurality of antennas of AP system and AP simply, effectively.
Further, in the radio reception device detection system of the foregoing description, described test packet is a detection response message for the beacon message.
Further, in the radio reception device detection system of the foregoing description, when described test packet was the beacon message, described AP also was used for switching to detected state from operating state before multithread sends described test packet; Wherein, described AP comprises operating state and detected state, and described AP when in running order single current send described beacon message, multithread sent described beacon message when described AP was in detected state.
Radio reception device detection system according to the foregoing description, because AP can distinguish operating state and detected state, so that AP only under detected state multithread send the beacon message, next in working order single current sends the beacon message, thereby guarantee in the conventional use of this AP compatibility with the STA of low rate, avoid not causing the beacon message to take defeat, thereby cause the radio communication fault because of STA does not support the multithread message.
Further, in the radio reception device detection system of the foregoing description, when described test packet is detection response message, described STA also is used for sending the probe requests thereby message to described AP to be detected before described AP multithread sends test packet, so that described AP returns described detection response message based on described probe requests thereby message.
Further, in the radio reception device detection system of the foregoing description, test packet comprises beacon message and detection response message.
Further, in the radio reception device detection system of the foregoing description, described AP comprises the 1st antenna, the 2nd antenna and the 3rd antenna, then described AP sends the beacon message by described the 1st antenna and described the 2nd antenna double fluid, and the detection response message that described AP also sends based on STA is by described the 2nd antenna and described the 3rd antenna transmission detection response message.
Correspondingly, described STA comprises and also is used for active scan network interface card and drive sweep network interface card, and described STA receives and resolve described beacon message by described drive sweep network interface card, and receives and resolve described detection response message by described active scan network interface card; Correspondingly, whether described STA judges by the identification information that described beacon message of demodulation and described detection response message get access to described AP whether described AP breaks down according to described drive sweep network interface card and described active scan network interface card.
Particularly, described STA is used for also judging in such a way whether described AP breaks down:
If described active scan network interface card and described drive sweep network interface card all obtain the identification information of described AP, know that then described AP does not break down;
If described active scan network interface card obtains the identification information of described AP and the identification information that described drive sweep network interface card does not obtain described AP, know that then the 3rd antenna of described AP breaks down;
If described active scan network interface card does not obtain the identification information of described AP and the identification information that described drive sweep network interface card obtains described AP, know that then the 1st antenna of described AP breaks down;
If described active scan network interface card and described drive sweep network interface card all do not obtain the identification information of described AP, know then that described the 2nd antenna breaks down or described the 1st～the 3rd antenna at least 2 antennas break down or described AP generation systems fault.
According to the radio reception device detection system of the foregoing description,, realized complete detection for AP with 3 antennas by sending test packet by the AP double fluid.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (14)
1. a radio reception device detection method is characterized in that, comprising:
Radio reception device AP multithread to be detected sends test packet, and described test packet carries the identification information of described AP;
The test packet that wireless stations STA receives and the described multithread of demodulation sends if described STA gets access to the identification information of described AP by the described test packet of demodulation, knows that then described AP does not break down.
2. radio reception device detection method according to claim 1 is characterized in that, described test packet is a beacon beacon message; Correspondingly, described AP multithread to be detected sends before the step of test packet, also comprises:
Described AP switches to detected state from operating state; Wherein, described AP comprises operating state and detected state, and described AP when in running order single current send described beacon message, multithread sent described beacon message when described AP was in detected state.
3. radio reception device detection method according to claim 1 is characterized in that, described test packet is a detection response message; Correspondingly, described AP multithread to be detected also comprises before sending the step of test packet:
Described STA sends the probe requests thereby message to described AP to be detected, so that described AP returns described detection response message based on described probe requests thereby message.
4. radio reception device detection method according to claim 1 is characterized in that described test packet comprises beacon message and detection response message.
5. radio reception device detection method according to claim 4 is characterized in that, described AP comprises the 1st antenna, the 2nd antenna and the 3rd antenna, and then described AP sends the beacon message by described the 1st antenna and described the 2nd antenna double fluid; Described AP also sends detection response message based on the probe requests thereby message that STA sends by described the 2nd antenna and described the 3rd antenna double fluid.
6. radio reception device detection method according to claim 5 is characterized in that, STA receives and the step of the test packet that the described multithread of demodulation sends comprises:
Described STA receives and resolves described beacon message by described drive sweep network interface card, and receives and resolve described detection response message by described active scan network interface card, and wherein, described STA comprises described active scan network interface card and described drive sweep network interface card; Correspondingly, whether described STA judges by the identification information that described beacon message of demodulation and described detection response message get access to described AP whether described AP breaks down according to described drive sweep network interface card and described active scan network interface card.
7. radio reception device detection method according to claim 6, it is characterized in that whether described STA judges that by the identification information that described beacon message of demodulation and described detection response message get access to described AP the step whether described AP breaks down comprises according to described active scan network interface card and described drive sweep network interface card:
If described active scan network interface card and described drive sweep network interface card all obtain the identification information of described AP, know that then described AP does not break down;
If described active scan network interface card obtains the identification information of described AP and the identification information that described drive sweep network interface card does not obtain described AP, know that then the 3rd antenna of described AP breaks down;
If described active scan network interface card does not obtain the identification information of described AP and the identification information that described drive sweep network interface card obtains described AP, know that then the 1st antenna of described AP breaks down;
If described active scan network interface card and described drive sweep network interface card all do not obtain the identification information of described AP, know then that described the 2nd antenna breaks down or described the 1st～the 3rd antenna at least 2 antennas break down or described AP generation systems fault.
8. a radio reception device detection system is characterized in that, comprises AP and STA, wherein:
Described AP is used for multithread and sends test packet, and described test packet carries the identification information of described AP;
The test packet that described STA is used to receive and the described multithread of demodulation sends if described STA gets access to the identification information of described AP by the described test packet of demodulation, knows that then described AP does not break down.
9. radio reception device detection system according to claim 8 is characterized in that, described test packet is the beacon message; Correspondingly, described AP also is used for switching to detected state from operating state before multithread sends described test packet; Wherein, described AP comprises operating state and detected state, and described AP when in running order single current send described beacon message, multithread sent described beacon message when described AP was in detected state.
10. radio reception device detection system according to claim 8 is characterized in that, described test packet is a detection response message; Correspondingly, described STA also is used for sending the probe requests thereby message to described AP to be detected before described AP multithread sends test packet, so that described AP returns described detection response message based on described probe requests thereby message.
11. radio reception device detection system according to claim 8 is characterized in that described test packet comprises beacon message and detection response message.
12. radio reception device detection system according to claim 11 is characterized in that, described AP comprises the 1st antenna, the 2nd antenna and the 3rd antenna, and then described AP sends the beacon message by described the 1st antenna and described the 2nd antenna double fluid; And the detection response message that described AP also sends based on STA is by described the 2nd antenna and described the 3rd antenna transmission detection response message.
13. radio reception device detection system according to claim 12, it is characterized in that, described STA comprises and also is used for active scan network interface card and drive sweep network interface card, and described STA receives and resolves described beacon message by described drive sweep network interface card, and receives and resolve described detection response message by described active scan network interface card; Correspondingly, whether described STA judges by the identification information that described beacon message of demodulation and described detection response message get access to described AP whether described AP breaks down according to described drive sweep network interface card and described active scan network interface card.
14. radio reception device detection system according to claim 13 is characterized in that, described STA is used for also judging in such a way whether described AP breaks down:
If described active scan network interface card and described drive sweep network interface card all obtain the identification information of described AP, know that then described AP does not break down;
If described active scan network interface card obtains the identification information of described AP and the identification information that described drive sweep network interface card does not obtain described AP, know that then the 3rd antenna of described AP breaks down;
If described active scan network interface card does not obtain the identification information of described AP and the identification information that described drive sweep network interface card obtains described AP, know that then the 1st antenna of described AP breaks down;
If described active scan network interface card and described drive sweep network interface card all do not obtain the identification information of described AP, know then that described the 2nd antenna breaks down or described the 1st～the 3rd antenna at least 2 antennas break down or described AP generation systems fault.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104125573A (en) * | 2013-04-26 | 2014-10-29 | 中国移动通信集团公司 | Method for detecting working condition of dynamic frequency selection DFS and equipment thereof |
| CN107040293A (en) * | 2017-03-02 | 2017-08-11 | 上海斐讯数据通信技术有限公司 | Multi-user's input/output communication system and method |
| CN110853311A (en) * | 2019-11-08 | 2020-02-28 | 北京三快在线科技有限公司 | Vehicle alarm method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354607A (en) * | 2000-11-20 | 2002-06-19 | 西门子公司 | Method for detecting at least one broadcasting channel and its radio communication system |
| CN1992651A (en) * | 2005-12-29 | 2007-07-04 | 华为技术有限公司 | Implementation method for detecting multicast performance of Ethernet |
| CN101370256A (en) * | 2007-08-13 | 2009-02-18 | 华为技术有限公司 | Method, system, equipment and access terminal for transmitting and acquiring cell identification |
| CN101534226A (en) * | 2009-04-14 | 2009-09-16 | 杭州华三通信技术有限公司 | VLAN-based whole network loop detection method and loop detection equipment |
-
2011
- 2011-07-11 CN CN2011101928127A patent/CN102256291A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354607A (en) * | 2000-11-20 | 2002-06-19 | 西门子公司 | Method for detecting at least one broadcasting channel and its radio communication system |
| CN1992651A (en) * | 2005-12-29 | 2007-07-04 | 华为技术有限公司 | Implementation method for detecting multicast performance of Ethernet |
| CN101370256A (en) * | 2007-08-13 | 2009-02-18 | 华为技术有限公司 | Method, system, equipment and access terminal for transmitting and acquiring cell identification |
| CN101534226A (en) * | 2009-04-14 | 2009-09-16 | 杭州华三通信技术有限公司 | VLAN-based whole network loop detection method and loop detection equipment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104125573A (en) * | 2013-04-26 | 2014-10-29 | 中国移动通信集团公司 | Method for detecting working condition of dynamic frequency selection DFS and equipment thereof |
| CN107040293A (en) * | 2017-03-02 | 2017-08-11 | 上海斐讯数据通信技术有限公司 | Multi-user's input/output communication system and method |
| CN107040293B (en) * | 2017-03-02 | 2020-12-22 | 义乌市智享通讯设备有限公司 | Multi-user input/output communication system and method |
| CN110853311A (en) * | 2019-11-08 | 2020-02-28 | 北京三快在线科技有限公司 | Vehicle alarm method and device |
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Application publication date: 20111123 |