CN103731169A - Receiving sensitivity improvement method - Google Patents
Receiving sensitivity improvement method Download PDFInfo
- Publication number
- CN103731169A CN103731169A CN201310656088.8A CN201310656088A CN103731169A CN 103731169 A CN103731169 A CN 103731169A CN 201310656088 A CN201310656088 A CN 201310656088A CN 103731169 A CN103731169 A CN 103731169A
- Authority
- CN
- China
- Prior art keywords
- receiving sensitivity
- wireless access
- threshold value
- signal
- improvement method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000035945 sensitivity Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 101100172132 Mus musculus Eif3a gene Proteins 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000013439 planning Methods 0.000 description 1
- 238000012913 prioritisation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a receiving sensitivity improvement method which includes the following steps that (a) an effective signal is distinguished from a noise signal in a wireless access system by means of a preset threshold value; (b) receiving sensitivity of wireless access equipment is improved in a test scene in the mode that the preset threshold value is reduced so as to pass a test; (c) during normal operation, the preset threshold value is increased so as to reduce the receiving sensitivity of the wireless access equipment, accordingly interference borne by the wireless access equipment is reduced, the wireless access system carries out signal collision detection by means of a CSMA/CA, and two pieces of adjacent wireless access equipment use mutually staggered channel transmission signals to reduce adjacent channel interference. By means of the receiving sensitivity improvement method, whether a signal is noise is judged by means of the preset threshold value, when the intensity of the received signal is smaller than the preset threshold value, the signal is taken for noise, assessment of an idle channel cannot be influenced, and the package distributing possibility of a wireless access point is increased.
Description
Technical field
The present invention relates to a kind of wireless signal processing methods, relate in particular to a kind of receiving sensitivity improvement method.
Background technology
Along with the surge of universal and user's use amount of WLAN, the demand of wireless optimization also increases greatly.During existing network is used, the problem of WLAN mainly comes from interference, for disturbing, mainly contains at present following two kinds of prioritization schemes: 1, the channel distribution during network planning, and by the channel of the adjacent wireless access point AP that staggers, avoid or reduce same adjacent frequency and disturb; 2, by the power that reduces wireless access point AP, reduce the interference of access point apparatus to other equipment.
Existing wireless network generally adopts Carrier Sense Multiple Access/conflict to avoid, and this kind of scheme adopts initiatively avoids collision but not the mode of passive detecting solves collision problem, can meet those and be difficult for the demand whether accurate detecting has conflict to occur.
The workflow of CSMA/CA agreement is as follows: a work station wishes to transmit data in wireless network, if do not detect and transmitting data in network, additional wait a period of time, select at random again a timeslice to continue to survey, if still there is no activity in Wi-Fi, just data are sent, specific works flow process as shown in Figure 1.In AP system, the clear channel assessment (CCA) by CCA(is avoided in conflict) realize, when AP can receive other useful signal, think channel busy, entering after the random back time again to attempt giving out a contract for a project.Take the WLAN of colleges and universities as example, generally all exist because AP lays the intensive same adjacent frequency causing and disturb, because general existing network application WLAN only has 1,6,11 3 not overlapping channel, so will note channel distribution at the design initial stage.But nonetheless,, due to power and the receiving sensitivity of access device, AP directly still can impact.Therefore, be necessary to provide a kind of receiving sensitivity improvement method, can on-the-fly modify the sensitivity of accepting of AP, can effectively dwindle the monitoring scope of AP, avoid the delay of giving out a contract for a project causing because of conflict.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of receiving sensitivity improvement method, can on-the-fly modify the sensitivity of accepting of WAP (wireless access point), can effectively dwindle the monitoring scope of WAP (wireless access point), avoids the delay of giving out a contract for a project causing because of conflict.
The present invention solves the problems of the technologies described above the technical scheme adopting to be to provide a kind of receiving sensitivity improvement method, comprises the steps: a) to adopt useful signal and the noise signal in predetermined threshold value difference wireless access system; B) under test scene, by reducing predetermined threshold value, improve the receiving sensitivity of radio reception device, to pass through test; C) when normal work, by increasing predetermined threshold value, reduce the receiving sensitivity of radio reception device, thereby reduce the interference that radio reception device is subject to.
Above-mentioned receiving sensitivity improvement method, wherein, described wireless access system adopts CSMA/CA to carry out signal conflict detection.
Above-mentioned receiving sensitivity improvement method, wherein, two adjacent radio reception devices adopt the transmission signal mutually staggering to reduce adjacent frequency and disturb.
Above-mentioned receiving sensitivity improvement method, wherein, the channel that described radio reception device is used is 1,6 or 11 channels.
The present invention contrasts prior art following beneficial effect: receiving sensitivity improvement method provided by the invention, by predetermined threshold value (noise floor thresholding), judge whether a signal is noise, when being less than predetermined threshold value, the signal strength signal intensity receiving will be considered to noise, can not have influence on clear channel assessment (CCA) (CCA), thereby increase the chance of giving out a contract for a project of WAP (wireless access point).
Accompanying drawing explanation
Fig. 1 is the CSMA/CA workflow schematic diagram that the present invention uses;
Fig. 2 is that receiving sensitivity of the present invention is improved schematic flow sheet.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 2 is that receiving sensitivity of the present invention is improved schematic flow sheet.
Refer to Fig. 2, receiving sensitivity improvement method provided by the invention comprises the steps:
Step S1: adopt useful signal and noise signal in predetermined threshold value difference wireless access system; Described wireless access system adopts CSMA/CA to carry out signal conflict detection; Two adjacent radio reception devices preferably adopt the transmission signal mutually staggering to reduce adjacent frequency and disturb; The channel that described radio reception device is used is 1,6 or 11 channels.
Step S2: improve the receiving sensitivity of radio reception device by reducing predetermined threshold value under test scene, so that by test;
Step S3: reduce the receiving sensitivity of radio reception device by increasing predetermined threshold value when normal work, thereby reduce the interference that radio reception device is subject to.
In sum, receiving sensitivity improvement method provided by the invention, the clear channel assessment (CCA) by CCA(is avoided in conflict) realize, when AP can receive other useful signal, think channel busy, entering after the random back time again to attempt giving out a contract for a project.In AP system, by noise floor thresholding, judge whether a signal is noise, when being less than noise floor thresholding, the signal strength signal intensity receiving will be considered to noise, can not have influence on CCA(clear channel assessment (CCA)), thus the chance of giving out a contract for a project of AP increased.
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 (4)
1. a receiving sensitivity improvement method, is characterized in that, comprises the steps:
A) adopt useful signal and the noise signal in predetermined threshold value difference wireless access system;
B) under test scene, by reducing predetermined threshold value, improve the receiving sensitivity of radio reception device, to pass through test;
C) when normal work, by increasing predetermined threshold value, reduce the receiving sensitivity of radio reception device, thereby reduce the interference that radio reception device is subject to.
2. receiving sensitivity improvement method as claimed in claim 1, is characterized in that, described wireless access system adopts CSMA/CA to carry out signal conflict detection.
3. receiving sensitivity improvement method as claimed in claim 1 or 2, is characterized in that, two adjacent radio reception devices adopt the transmission signal mutually staggering to reduce adjacent frequency and disturb.
4. receiving sensitivity improvement method as claimed in claim 3, is characterized in that, the channel that described radio reception device is used is 1,6 or 11 channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310656088.8A CN103731169A (en) | 2013-12-06 | 2013-12-06 | Receiving sensitivity improvement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310656088.8A CN103731169A (en) | 2013-12-06 | 2013-12-06 | Receiving sensitivity improvement method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103731169A true CN103731169A (en) | 2014-04-16 |
Family
ID=50455118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310656088.8A Pending CN103731169A (en) | 2013-12-06 | 2013-12-06 | Receiving sensitivity improvement method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103731169A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105451337A (en) * | 2014-08-01 | 2016-03-30 | 展讯通信（上海）有限公司 | Clear channel assessment threshold control method and device |
| CN105812295A (en) * | 2014-12-30 | 2016-07-27 | 中兴通讯股份有限公司 | Data transmission method and station |
| WO2017004994A1 (en) * | 2015-07-08 | 2017-01-12 | 中兴通讯股份有限公司 | Clear channel assessment method and device |
| CN114793347A (en) * | 2021-01-26 | 2022-07-26 | 通用汽车环球科技运作有限责任公司 | Closed-loop environmental sensing and control for wireless applications |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1762115A (en) * | 2003-02-21 | 2006-04-19 | 阿特罗斯通信公司 | Method and apparatus for selective disregard of co-channel transmissions on a medium |
| CN101023688A (en) * | 2004-10-29 | 2007-08-22 | 思科技术公司 | High density WLAN system |
| EP1838040A2 (en) * | 2006-03-23 | 2007-09-26 | Broadcom Corporation | Method and system for transmit power control techniques to reduce mutual interference between coexistent wireless networks |
| CN101124784A (en) * | 2004-12-20 | 2008-02-13 | 皇家飞利浦电子股份有限公司 | Method and arrangement for reducing the mutual interference of network subscribers in radio networks |
| CN101243616A (en) * | 2005-09-26 | 2008-08-13 | 思科技术公司 | Protocol extension for a high density network |
| JP2008193452A (en) * | 2007-02-06 | 2008-08-21 | Casio Comput Co Ltd | Access point, wireless terminal device and program |
| CN101558615A (en) * | 2006-12-15 | 2009-10-14 | 摩托罗拉公司 | Method and system for predictive sensing of periodic intermittent interference |
| CN101589563A (en) * | 2007-02-06 | 2009-11-25 | 松下电器产业株式会社 | Receiver and receiving system using the same |
-
2013
- 2013-12-06 CN CN201310656088.8A patent/CN103731169A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1762115A (en) * | 2003-02-21 | 2006-04-19 | 阿特罗斯通信公司 | Method and apparatus for selective disregard of co-channel transmissions on a medium |
| CN101023688A (en) * | 2004-10-29 | 2007-08-22 | 思科技术公司 | High density WLAN system |
| CN101124784A (en) * | 2004-12-20 | 2008-02-13 | 皇家飞利浦电子股份有限公司 | Method and arrangement for reducing the mutual interference of network subscribers in radio networks |
| CN101243616A (en) * | 2005-09-26 | 2008-08-13 | 思科技术公司 | Protocol extension for a high density network |
| EP1838040A2 (en) * | 2006-03-23 | 2007-09-26 | Broadcom Corporation | Method and system for transmit power control techniques to reduce mutual interference between coexistent wireless networks |
| CN101558615A (en) * | 2006-12-15 | 2009-10-14 | 摩托罗拉公司 | Method and system for predictive sensing of periodic intermittent interference |
| JP2008193452A (en) * | 2007-02-06 | 2008-08-21 | Casio Comput Co Ltd | Access point, wireless terminal device and program |
| CN101589563A (en) * | 2007-02-06 | 2009-11-25 | 松下电器产业株式会社 | Receiver and receiving system using the same |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105451337A (en) * | 2014-08-01 | 2016-03-30 | 展讯通信（上海）有限公司 | Clear channel assessment threshold control method and device |
| CN105451337B (en) * | 2014-08-01 | 2019-01-04 | 展讯通信（上海）有限公司 | The control method and device of clear channel assessment (CCA) thresholding |
| CN105812295A (en) * | 2014-12-30 | 2016-07-27 | 中兴通讯股份有限公司 | Data transmission method and station |
| WO2017004994A1 (en) * | 2015-07-08 | 2017-01-12 | 中兴通讯股份有限公司 | Clear channel assessment method and device |
| CN106341200A (en) * | 2015-07-08 | 2017-01-18 | 中兴通讯股份有限公司 | Clear channel assessment method and device |
| CN114793347A (en) * | 2021-01-26 | 2022-07-26 | 通用汽车环球科技运作有限责任公司 | Closed-loop environmental sensing and control for wireless applications |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5475194B2 (en) | Primary channel selection method in wireless network | |
| US10819451B2 (en) | Method of reporting RSSI measurements in an unlicensed band and related apparatus | |
| US20170230874A1 (en) | Rrm measurement method, measurement system, terminal and base station | |
| CN105577291B (en) | Method and system for detecting idle channel in wireless communication system | |
| CN103987059B (en) | For the anti-interference method and device of WLAN | |
| US8619640B2 (en) | Dynamic bandwidth control in interference situations | |
| CN104540230A (en) | Uplink scheduling method and uplink scheduling device | |
| JP5287870B2 (en) | Network device, communication device, and communication control method | |
| KR20160026555A (en) | Scheme for communcation in mobile communication system using unlicensed frequency band | |
| CN104780544A (en) | Communication method and device by using unauthorized spectrum | |
| EP3125623B1 (en) | Data transmission method, apparatus and system | |
| EP3355606B1 (en) | Method and device for detecting signal strength | |
| JP2014533040A5 (en) | ||
| CN102256336A (en) | Method, device and system for combined use of wireless fidelity (WiFi) access points | |
| EP3145237A1 (en) | Processing method for dynamic channel detection, station, and access point device | |
| CN103731169A (en) | Receiving sensitivity improvement method | |
| CN105812295B (en) | Data transmission method and station | |
| WO2017214536A1 (en) | Method and apparatus for reusing over obss txop | |
| US20180027518A1 (en) | Proximity sensing using spectral analysis | |
| CN103269498A (en) | Method and device for detecting adjacent channel interference | |
| CN103369701B (en) | A kind of method and device of Stochastic accessing | |
| CN106060861A (en) | Evaluation method of unlicensed frequency band carrier and evolution node applying same | |
| WO2017004994A1 (en) | Clear channel assessment method and device | |
| KR101113454B1 (en) | Method for controlling power in cognitive radio ad-hoc network | |
| CN105453657A (en) | Access point, station, access controller and noise emission method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140416 |