CN102905276A - Anti-interference method and wireless dispersion system - Google Patents
Anti-interference method and wireless dispersion system Download PDFInfo
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- CN102905276A CN102905276A CN2011102090422A CN201110209042A CN102905276A CN 102905276 A CN102905276 A CN 102905276A CN 2011102090422 A CN2011102090422 A CN 2011102090422A CN 201110209042 A CN201110209042 A CN 201110209042A CN 102905276 A CN102905276 A CN 102905276A
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Abstract
The invention discloses an anti-interference method for a wireless dispersion system. The wireless dispersion system comprises a plurality of wireless access devices, and the anti-interference method comprises the following steps of: using one wireless access device in the plurality of wireless access devices to detect the number of the wireless access devices interfering with the wireless access device so as to produce a first detection result; and adjusting an operation frequency band of the wireless access device when the first detection result shows that the number of the wireless access devices interfering with the wireless access device is larger than a default value.
Description
Technical field
The present invention relates to a kind of anti-interference method and wireless decentralized system, particularly relate to a kind of by the situation of access point controller according to interference, adjust operational frequency bands or the operand power of radio access device, make to disturb and be down to minimum anti-interference method and wireless decentralized system.
Background technology
In modernized information-intensive society, various wireless communication systems have become one of most important approach of society switched voice or message language, data archival, video/audio archive.In order to improve communication quality, industry has developed many wireless communication technologys, in order to spectrum efficiency and the transmission rate that promotes wireless communication system.
For instance, meet in the wireless communication system of IEEE 802.11 WLAN standards in employing, arbitrary platform (Station) can't directly transfer data to another platform, and needs the transmission that biography just can be finished data that turns by access point (Access Point).In this case, in order to enlarge the network service scope, reduce wiring cost, prior art has developed wireless decentralized system (Wireless Distribution System), and it consists of an overall network in the mode that wireless network connects.Wireless decentralized system can be distinguished into again two kinds of different application of wireless bridging (Bridge) and wireless relay (Repeater), the former is in order to connect two different LAN, the latter is in order to enlarge the network service scope of same LAN, and both common ground to be wireless bridging and wireless relay all use wireless network as the transmission connected mode in the middle of it.In this case, must be very careful careful when the wireless decentralized system of design planning, to avoid the generation of air interference or collision.
For instance, please refer to Figure 1A, Figure 1A is the schematic diagram of known one wireless decentralized system 10.Wireless decentralized system 10 includes an access point controller (Access Controller) 100, one switch 102 and radio access device AP_A～AP_E.Radio access device AP_A～AP_E concentrates and is connected on the switch 102, and is registered in the access point controller 100, by 100 centralized management of access point controller.In Figure 1A, the signal cover of each radio access device of dotted line Range Representation, ideally, radio access device AP_A～AP_E should be under non-interference, and complete covering need provide the scope of service.Yet if the position that radio access device AP_A～AP_E places is too intensive, or transmitting power is too high, may cause the mutual interference of radio access device phase, namely as shown in Figure 1B.In this case, may cause communication failure.
The interference of radio access device other radio access device in being subject to same wireless decentralized system, may be subject in addition the interference of other wireless decentralized system.Please refer to Fig. 2 A, Fig. 2 A is the schematic diagram of known one wireless decentralized system 20.The framework of wireless decentralized system 20 is similar to wireless decentralized system 10, and it includes an access point controller 200, a switch 202 and radio access device AP_10, AP_20, AP_30.Radio access device AP_10, AP_20, AP_30 concentrate and are connected on the switch 202, and are registered in the access point controller 200, by 200 centralized management of access point controller.In addition, shown in Fig. 2 A, radio access device AP_10, AP_20, AP_30 are arranged at respectively among regional AREA_A, AREA_B, the AREA_C, are used to provide each regional wireless connections service, and the signal cover of each radio access device of dotted line Range Representation.Simultaneously, there are respectively radio access device AP_11, AP_12, AP_21, AP_22, AP_31, the AP_32 of other (one or more) wireless decentralized system that service is provided among regional AREA_A, AREA_B, the AREA_C.Wherein, in regional AREA_A, the signal cover of the signal cover of radio access device AP_10 and radio access device AP_11, AP_12 overlaps.Therefore, ideally, radio access device AP_10 and radio access device AP_11, AP_12 should adopt the channel (representing with multi-form dotted line) of different frequency in Fig. 2 A, and answer the power ratio control size, to avoid the phase mutual interference.Yet, in actual applications, because radio access device AP_11, the non-access point controller 200 of AP_12 are administered, therefore one of radio access device AP_11, AP_12 may adopt the channel identical with radio access device AP_10, namely shown in Fig. 2 B, wherein radio access device AP_12 and radio access device AP_10 adopt same channel.In this case, radio access device AP_10 can be subject to the interference of radio access device AP_12, may cause communication failure.
From the above, for wireless decentralized system, prior art has improved necessity in fact.
Summary of the invention
The object of the present invention is to provide a kind of anti-interference method and wireless decentralized system, with by the situation of access point controller according to interference, adjust operational frequency bands or the operand power of radio access device, make to disturb and be down to minimum.
For reaching above-mentioned purpose, the invention provides a kind of anti-interference method for a wireless decentralized system, this wireless decentralized system comprises a plurality of radio access devices, this anti-interference method includes the detecting of a radio access device in these a plurality of radio access devices this radio access device is produced the quantity of the radio access device that disturbs, to produce one first detecting result; And show that in this first detecting result the quantity that this radio access device is produced the radio access device that disturbs during greater than a default value, adjusts an operational frequency bands of this radio access device.
For reaching above-mentioned purpose, the present invention also provides a kind of wireless decentralized system, and this wireless decentralized system includes a plurality of radio access devices; One switch is coupled to this a plurality of radio access devices; And an access point controller, be coupled to this switch, be used for by these a plurality of radio access devices of this Switch control; Wherein, this access point controller comprises a storage element, be used for storing a program code, carry out an anti-interference method in order to indicate this access point controller, this anti-interference method includes: control the detecting of a radio access device in these a plurality of radio access devices this radio access device is produced the quantity of the radio access device that disturbs, to produce one first detecting result; And show that in this first detecting result the quantity that this radio access device is produced the radio access device that disturbs during greater than a default value, adjusts an operational frequency bands of this radio access device.
Description of drawings
Figure 1A is the schematic diagram of a known wireless decentralized system.
Figure 1B is the schematic diagram that the wireless decentralized system of Figure 1A is interfered.
Fig. 2 A is the schematic diagram of a known wireless decentralized system.
Fig. 2 B is the schematic diagram that the wireless decentralized system of Fig. 2 A is interfered.
Fig. 3 is the schematic diagram of the embodiment of the invention one anti-interference flow process.
Wherein, description of reference numerals is as follows:
10,20 wireless decentralized systems
100,200 access point controllers
102,202 switches
AP_A～AP_E, AP_10, AP_20, radio access device AP_30, AP_11, AP_12, AP_21, AP_22, AP_31, AP_32
AREA_A, AREA_B, AREA_C zone
30 anti-interference flow processs
300,302,304,306,308 steps
Embodiment
Please refer to Fig. 3, Fig. 3 is the schematic diagram of the embodiment of the invention one anti-interference flow process 30.Anti-interference flow process 30 can be used in the wireless decentralized system shown in Figure 1A or Fig. 2 A, and it comprises an access point controller and a plurality of radio access device.Anti-interference flow process 30 can be avoided the interference between the radio access device, and it is implemented in the access point controller (as be stored in the storage device, and carried out by a processor) with program code means, comprises following steps:
Step 300: beginning.
Step 302: around the radio access device detecting it is produced the quantity of the radio access device that disturbs.
Step 304: the access point controller judges that whether the quantity of the radio access device that this radio access device generation is disturbed is greater than a default value.If then carry out step 306; If not, then get back to step 302.
Step 306: this radio access device is detected under a plurality of available band will produce to it quantity of the radio access device that disturbs.
Step 308: according to producing to this radio access device the quantity of the radio access device that disturbs under these a plurality of available band, adjust operational frequency bands or the operand power of this radio access device, or adjust operational frequency bands or the operand power of other radio access device.
Therefore, anti-interference flow process 30 is the quantity that around the radio access device it is produced the radio access device that disturbs in the first detecting wireless decentralized system, adjust according to this again its operational frequency bands or operand power, or adjust operational frequency bands or the operand power of other radio access device, to avoid interference between the radio access device or the interference between wireless decentralized system.Specifically, take the wireless decentralized system 10 of Figure 1A as example, by anti-interference flow process 30, access point controller 100 is that control radio access device AP_A～AP_E detects respectively the quantity that produces the radio access device that disturbs on every side; Then, radio access device AP_A～AP_E will detect the result and be back to access point controller 100; Access point controller 100 can according to the detecting result of radio access device AP_A～AP_E passback, judge whether to need to adjust operational frequency bands or the operand power of radio access device AP_A～AP_E.For example, take Figure 1B as example, each radio access device is subject to plural radio access device and disturbs, so operational frequency bands or the power of access point controller 100 adjustment radio access device AP_A～AP_E, and it is not interfered with each other.
In addition, take the wireless decentralized system 20 of Fig. 2 A as example, by anti-interference flow process 30, access point controller 200 is that control radio access device AP_10, AP_20, AP_30 detect respectively the quantity that produces the radio access device that disturbs on every side; Then, radio access device AP_10, AP_20, AP_30 will detect the result and be back to access point controller 200; Access point controller 200 can according to the detecting result of radio access device AP_10, AP_20, AP_30 passback, judge whether to need to adjust operational frequency bands or the operand power of radio access device AP_10, AP_20, AP_30.For example, take Fig. 2 B as example, the signal cover of the signal cover of radio access device AP_10 and radio access device AP_11, AP_12 overlaps, therefore access point controller 200 is adjusted operational frequency bands or the power of radio access device AP_10, makes it not be subjected to the interference of radio access device AP_11, AP_12.
Aforementioned about anti-interference flow process 30 be applied to wireless decentralized system 10,20 embodiment illustrates concept of the present invention, so is not limited to this, those skilled in the art is when doing according to this different modifying.For instance, step 302 be by around the detecting of radio access device control radio access device to its quantity that produces the radio access device that disturbs, judge that wherein whether a radio access device produces to another radio access device that disturb should be according to different system and suitably definition.For example, at an embodiment, can detect another radio access device in a radio access device and use identical operational frequency bands and judge that the latter produces interference to the former; At another embodiment, can consider simultaneously through-put power, that is use identical operational frequency bands when a radio access device detects another radio access device, and through-put power begins to judge that the latter produces interference to the former during greater than a default power.
In addition, step 308 is by access point controller control radio access device adjusting operation frequency band or operand power, and its purpose system makes to disturb and is down to minimum, reaches a minimum number even also produce the radio access device that disturbs.And the implementation of step 308 has many kinds, and take Figure 1B as example, owing to be to cause interfering with each otherly because operand power is excessive between radio access device AP_A～AP_E, therefore, access point controller 100 can be controlled radio access device AP_A～AP_E and reduce power.In other words, the access point controller is adjusted its operation channel or the power except controlling disturbed radio access device, also can control the operation channel or the power that it are produced the radio access device that disturbs.In addition, take Fig. 2 B as example, because radio access device AP_10 system causes disturbing because radio access device AP_A2 adopts same channel, but 200 of the non-access point controllers of radio access device AP_12 can be controlled, therefore, access point controller 200 can be controlled radio access device AP_10 and adopt the different operating frequency, to avoid channel disturbance.
In the prior art, wireless decentralized system may be too intensive because of the setting position of radio access device, or transmitting power is excessively high, causes the mutual interference of radio access device phase; Perhaps, the radio access device may be subject to the interference of other wireless decentralized system.In comparison, the present invention can adjust operational frequency bands or the operand power of radio access device by the access point controller according to the situation of disturbing, and makes to disturb and is down to minimum.
In sum, the present invention can adjust operational frequency bands or the operand power of radio access device by the access point controller according to the situation of disturbing, and makes to disturb and is down to minimum.
The above only is the preferred embodiments of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (14)
1. anti-interference method that is used for a wireless decentralized system, this wireless decentralized system comprises a plurality of radio access devices, it is characterized in that, and this anti-interference method includes:
Radio access device detecting is to the quantity of the radio access device of this radio access device generation interference, to produce one first detecting result in these a plurality of radio access devices; And
Show that in this first detecting result the quantity that this radio access device is produced the radio access device that disturbs during greater than a default value, adjusts an operational frequency bands of this radio access device.
2. anti-interference method as claimed in claim 1 is characterized in that, this radio access device is produced the radio access device system that disturbs adopt the operational frequency bands identical with this radio access device.
3. anti-interference method as claimed in claim 1 is characterized in that, this radio access device is produced the radio access device system that disturbs adopt the operational frequency bands identical with this radio access device, and through-put power is greater than a default power.
4. anti-interference method as claimed in claim 1, it is characterized in that, show that in this first detecting result the quantity that this radio access device is produced the radio access device that disturbs during greater than this default value, adjusts the step of this operational frequency bands of this radio access device, comprise:
This radio access device is detected the quantity that under a plurality of available band this radio access device is produced the radio access device that disturbs, to produce one second detecting result; And
According to this second detecting result, adjust this operational frequency bands of this radio access device.
5. anti-interference method as claimed in claim 4, it is characterized in that, according to this second detecting result, adjust the step of this operational frequency bands of this radio access device, system makes the radio access device that this radio access device generation is disturbed reach a minimum number by choosing an available band as this operational frequency bands in these a plurality of available band.
6. anti-interference method as claimed in claim 1 is characterized in that, this anti-interference method also comprises an operand power of adjusting this radio access device.
7. anti-interference method as claimed in claim 1, it is characterized in that, when this anti-interference method also is contained in this radio access device produced the radio access device that disturbs and belong to this a plurality of radio access device, adjust the operand power that this radio access device is produced the radio access device that disturbs.
8. a wireless decentralized system is characterized in that, this wireless decentralized system includes:
A plurality of radio access devices;
One switch is coupled to this a plurality of radio access devices; And
One access point controller is coupled to this switch, is used for by these a plurality of radio access devices of this Switch control; Wherein, this access point controller comprises a storage element, is used for storing a program code, carries out an anti-interference method in order to indicate this access point controller, and this anti-interference method includes:
Control the detecting of a radio access device in these a plurality of radio access devices this radio access device is produced the quantity of the radio access device that disturbs, to produce one first detecting result; And
Show that in this first detecting result the quantity that this radio access device is produced the radio access device that disturbs during greater than a default value, adjusts an operational frequency bands of this radio access device.
9. wireless decentralized system as claimed in claim 8 is characterized in that, this radio access device is produced the radio access device system that disturbs adopt the operational frequency bands identical with this radio access device.
10. wireless decentralized system as claimed in claim 8 is characterized in that, this radio access device is produced the radio access device system that disturbs adopt the operational frequency bands identical with this radio access device, and through-put power is greater than a default power.
11. wireless decentralized system as claimed in claim 8, it is characterized in that, show that in this first detecting result the quantity that this radio access device is produced the radio access device that disturbs is during greater than this default value in this anti-interference method, adjust the step of this operational frequency bands of this radio access device, comprise: control this radio access device and detect the quantity that under a plurality of available band this radio access device is produced the radio access device that disturbs, to produce one second detecting result; And
According to this second detecting result, adjust this operational frequency bands of this radio access device.
12. wireless decentralized system as claimed in claim 11, it is characterized in that, in this anti-interference method according to this second the detecting result, adjust the step of this operational frequency bands of this radio access device, system makes the radio access device that this radio access device generation is disturbed reach a minimum number by choosing an available band as this operational frequency bands in these a plurality of available band.
13. wireless decentralized system as claimed in claim 8 is characterized in that, this anti-interference method also comprises an operand power of adjusting this radio access device.
14. wireless decentralized system as claimed in claim 8, it is characterized in that, when this anti-interference method also is contained in this radio access device produced the radio access device that disturbs and belong to this a plurality of radio access device, adjust the operand power that this radio access device is produced the radio access device that disturbs.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110209042.2A CN102905276B (en) | 2011-07-25 | 2011-07-25 | Anti-interference method and wireless distribution system |
| TW100132658A TWI431954B (en) | 2011-07-25 | 2011-09-09 | Anti-interference method and related wireless distribution system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110209042.2A CN102905276B (en) | 2011-07-25 | 2011-07-25 | Anti-interference method and wireless distribution system |
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| CN102905276A true CN102905276A (en) | 2013-01-30 |
| CN102905276B CN102905276B (en) | 2016-03-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060094371A1 (en) * | 2004-10-29 | 2006-05-04 | Colubris Networks, Inc. | Wireless access point (AP) automatic channel selection |
| CN1889492A (en) * | 2006-07-19 | 2007-01-03 | 华为技术有限公司 | System and method for preventing radio local network self-interference |
| CN101626615A (en) * | 2009-08-10 | 2010-01-13 | 杭州华三通信技术有限公司 | AP power adjustment method and AP power adjustment equipment |
| CN101662775A (en) * | 2008-08-27 | 2010-03-03 | 上海华为技术有限公司 | Method, device and system for reducing base station interference |
| CN101951676A (en) * | 2009-07-09 | 2011-01-19 | 联发科技股份有限公司 | Mobile communication system and method for reducing signal interference |
-
2011
- 2011-07-25 CN CN201110209042.2A patent/CN102905276B/en active Active
- 2011-09-09 TW TW100132658A patent/TWI431954B/en active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060094371A1 (en) * | 2004-10-29 | 2006-05-04 | Colubris Networks, Inc. | Wireless access point (AP) automatic channel selection |
| CN1889492A (en) * | 2006-07-19 | 2007-01-03 | 华为技术有限公司 | System and method for preventing radio local network self-interference |
| CN101662775A (en) * | 2008-08-27 | 2010-03-03 | 上海华为技术有限公司 | Method, device and system for reducing base station interference |
| CN101951676A (en) * | 2009-07-09 | 2011-01-19 | 联发科技股份有限公司 | Mobile communication system and method for reducing signal interference |
| CN101626615A (en) * | 2009-08-10 | 2010-01-13 | 杭州华三通信技术有限公司 | AP power adjustment method and AP power adjustment equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102905276B (en) | 2016-03-09 |
| TWI431954B (en) | 2014-03-21 |
| TW201306503A (en) | 2013-02-01 |
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