CN101711037A - Method and device for detecting hidden node - Google Patents
Method and device for detecting hidden node Download PDFInfo
- Publication number
- CN101711037A CN101711037A CN200910260031A CN200910260031A CN101711037A CN 101711037 A CN101711037 A CN 101711037A CN 200910260031 A CN200910260031 A CN 200910260031A CN 200910260031 A CN200910260031 A CN 200910260031A CN 101711037 A CN101711037 A CN 101711037A
- Authority
- CN
- China
- Prior art keywords
- testing result
- sta
- concealed nodes
- node
- detection
- 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.)
- Granted
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a method and a device for detecting a hidden node. The method comprises that: a terminal STA sends a detection frame related to the hidden node, and detects detection framed sent by other STAs and/or detection starting notification messages related to the hidden node sent by APs; and the STA sends a detection result to a network side, and the network side discovers the hidden node according to the detection result. In the method, the STA detects the hidden node and reports the detection result to the network side; the network side analyzes the detection result to determine whether the hidden node exists; and when the hidden node exists, a hidden node protection mechanism is carried out on the hidden node only, so the air interface resource is saved, and the reduction of the performance of an air interface is avoided.
Description
Technical field
The present invention relates to communication field, relate in particular to a kind of detection method and equipment of concealed nodes.
Background technology
Because WLAN (Wireless Local Area Network, WLAN (wireless local area network)) transmission medium of network use is the medium that share in the space, AP in the same space coverage (Access Point, WAP (wireless access point)) and related Station, synchronization only allows an equipment sending data, therefore, 802.11 stipulated CSMA (Carrier Sense Multiple Access, carrier sense)/CD (ContentionDetection, collision detection) mechanism, the visit that comes the control transmission medium.Promptly when an equipment is ready for sending data, check employed space channel earlier,, then carry out random back if think that the risk (detect channel busy or detect channel idle for the first time) that clashes with other equipment is arranged, keep out of the way suitable opportunity, just carry out data and send.
Find out thus, belong to the equipment of the same space coverage, need to receive the signal of other equipment, when promptly visible mutually, could judge exactly that channel situation is to avoid conflict.And in the actual deployment, the concealed nodes phenomenon that causes owing to reasons such as deployment density, distances is easy to occur.So-called concealed nodes refers to the equipment that can not see mutually in effectively (being that signal strength signal intensity can be supported normal receiving literary composition) spatial dimension that radio frequency can have influence under the same channel.In case there is concealed nodes, the conflict of eating dishes without rice or wine is significantly risen, cause wrong bag to retransmit and increase, thereby reduce the performance of eating dishes without rice or wine greatly.
Concealed nodes can be divided into two kinds of typical case: hiding between a kind of AP of being; A kind of is hiding between the Station under the AP.Fig. 1 is the schematic diagram of hiding between the Station under the AP, and Station1 and Station2 are because middle obstacle or distance are invisible mutually, but both are simultaneously visible to AP.Therefore,, can not dodge mutually between Station1 and the Station2, cause easily sending conflict, make that user experience is relatively poor under the AP though AP can dodge with Station1, Station2 when sending data.Fig. 2 is the schematic diagram of hiding between the AP, AP1 and AP2 are because distance is distant, invisible mutually, but for the Station between two AP, AP1 and AP2 are simultaneously as seen, suppose that this Station has been associated with AP1, AP1 will consider the transmission of avoiding Station, the transmission of but not knowing to dodge AP2 when sending message.Therefore, when AP1 and AP2 send message simultaneously, can produce the conflict collision here at Station, message is in case clash in the space, and Station just can't normally receive, thereby makes that the experience at this Station place is relatively poor.
Problem at concealed nodes in the prior art has proposed a kind of concealed nodes protection mechanism.Wherein, node before sending by a pair of specific meanings short message (equipment that receives this message does not all send message over a period to come automatically) alternately, sightless node reaches the purpose of dodging by visible node as intermediary.Make concealed nodes perceive the other side's existence indirectly, reach the purpose of dodging.With situation about hiding between the Station under the AP is example, before Station1 sends message, send a RTS message earlier, associated AP sends CTS and responds, every other Station under the AP, comprise that Station2 can initiatively dodge a period of time, thereby avoided conflicting between Station1 and the Station2.The problem that this method exists in the prior art is: all will send the specific meanings short message before sending each message, increase the message number, can waste interface-free resources and reduce the efficient of eating dishes without rice or wine.
Summary of the invention
The invention provides a kind of detection method and equipment of concealed nodes, be used to realize detection, only concealed nodes is implemented the concealed nodes protection mechanism, save interface-free resources concealed nodes.
In order to achieve the above object, the invention provides a kind of detection method of concealed nodes, comprising:
Terminal STA sends the detection frame about concealed nodes, and the detection frame of other STA transmissions and/or the start detection notice message about concealed nodes of each AP transmission are detected;
Described STA sends testing result to network side, finds concealed nodes by network side according to described testing result.
Wherein, before the detection frame of described terminal STA transmission about concealed nodes, also comprise:
Described STA receives the start detection notice message about concealed nodes that network side AP sends, and starts the detection of concealed nodes; Or
When described STA arrives in default concealed nodes sense cycle, start the detection of concealed nodes; Or
Described STA starts the detection of concealed nodes according to default event trigger mechanism.
Wherein, described STA also comprises before network side sends testing result:
What described STA received testing result that network side AP sends reports the notice message, and start detection result reports; Or
When described STA arrived at default testing result report cycle, start detection result reported; Or
Described STA is according to default event trigger mechanism, and start detection result reports.
Wherein, described network side is found concealed nodes according to described testing result, comprising:
When the AP of described network side was Fit AP, each AP was according to the testing result that STA sends, and judged under self AP equipment whether have hiding STA node; Each AP reports AC with the testing result that STA sends, and judges under self AC equipment whether have hiding AP node by AC;
Detect the AP that hides the STA node and send notice, start the concealed nodes protection mechanism to hiding STA node; Detect the AC that hides the AP node and send notice, start the concealed nodes protection mechanism to hiding AP node.
Wherein, described network side is found concealed nodes according to described testing result, comprising:
When the AP of described network side was Fat AP, each AP was according to the testing result that STA sends, and judged whether to have hiding STA node under self AP equipment and whether have hiding AP node for self AP equipment; Detect the AP that hides the STA node and send notice, start the concealed nodes protection mechanism to hiding STA node; Detect the AP that hides the AP node and send notice, start the concealed nodes protection mechanism to detected hiding AP node.
The present invention also provides a kind of terminal STA equipment, comprising:
Detecting unit is used to send the detection frame about concealed nodes, and the detection frame of other STA transmissions and/or the start detection notice message about concealed nodes of each AP transmission are detected;
Testing result reports the unit, is used for sending to network side the testing result of described detecting unit, finds concealed nodes by network side according to described testing result.
Wherein, also comprise:
Detect start unit, be used for: receive that network side AP sends about the start detection notice message of concealed nodes the time, notify described detecting unit start detection; Or when default concealed nodes sense cycle arrives, notify described detecting unit start detection; Or, notify described detecting unit start detection according to default event trigger mechanism.
Wherein, also comprise:
Testing result reports start unit, and what be used to receive testing result that network side AP sends reports the notice message, notifies described testing result to report the unit to report testing result; Or when default testing result report cycle arrives, notify described testing result to report the unit to report testing result; Or, notify described testing result to report the unit to report testing result according to default event trigger mechanism.
The present invention also provides a kind of access point AP, comprising:
The detection notice unit is used for the start detection notice message about concealed nodes to STA;
The testing result receiving element is used to receive the testing result that described STA sends;
Concealed nodes is found the unit, is used for the testing result that receives according to described testing result receiving element, finds concealed nodes;
The concealed nodes notification unit is used for finding that to described concealed nodes the detected concealed nodes in unit sends notice, starts the concealed nodes protection mechanism.
Wherein, described concealed nodes is found the unit, specifically is used for:
When described AP is Fit AP,, judge under self AP equipment whether have hiding STA node according to the testing result that STA sends; And the testing result that STA sends reported AC, judge under self AC equipment whether have hiding AP node by AC;
When described AP is Fat AP,, judges whether to exist under self AP to hide the STA node and determine whether to exist and hide the AP node according to the testing result that STA sends.
The present invention also provides a kind of access control equipment AC, comprising:
The testing result receiving element is used to receive the testing result by the STA transmission that AP transmits;
Concealed nodes is found the unit, is used for the testing result that receives according to described testing result receiving element, finds to hide the AP node;
The concealed nodes notification unit is used for finding that to described concealed nodes the detected hiding AP node in unit sends notice, starts the concealed nodes protection mechanism.
Compared with prior art, the present invention has the following advantages:
Carry out the detection of concealed nodes and report testing result by STA among the present invention to network side; Network side is analyzed testing result and is determined whether concealed nodes exists; When concealed nodes exists, only concealed nodes is implemented the concealed nodes protection mechanism, thereby saved interface-free resources, avoided the performance decrease of eating dishes without rice or wine.
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 diagram of hiding between the Station under the AP in the prior art;
Fig. 2 is the schematic diagram of hiding between the AP in the prior art;
Fig. 3 is the detection method flow chart of the concealed nodes that provides among the present invention;
Fig. 4 is the schematic diagram of an application scenarios among the present invention;
Fig. 5 is the detection method flow chart of the concealed nodes that provides in the application scenarios of the present invention;
Fig. 6 is the structural representation of the STA that provides among the present invention;
Fig. 7 is the structural representation of the AP that provides among the present invention;
Fig. 8 is the structural representation of the AC that provides among 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.
A kind of detection method of concealed nodes is provided among the present invention, as shown in Figure 3, has comprised:
Step s301, terminal STA send the detection frame about concealed nodes, and the detection frame of other STA transmissions and/or the start detection notice message about concealed nodes of each AP transmission are detected;
Step s302, STA send testing result to network side, find concealed nodes by network side according to testing result.
Be described in detail below in conjunction with the detection method of a concrete application scenarios concealed nodes among the present invention.With application scenarios shown in Figure 4 is example, and wherein network is an AC-Fit AP structure.
Testing process comprises as shown in Figure 5:
Behind the last unlatching of step s501, the AP concealed nodes measuring ability, AP sends about the start detection of concealed nodes to STA and notifies message.
Concrete, AP regularly (this time interval can according to circumstances be configured) notifies message to the STA transmission about the start detection of concealed nodes at working channel, requires Station to begin to start concealed nodes and detects; This start detection notice message can be broadcasting packet or multicast message.In addition, except using working channel, can also use other channels, during actual deployment, the channels that do not disturb substantially that use more.It is maximum to consider that shared channel disturbs, and sends in order to reduce message, and suggestion only detects at working channel.
Step s502, STA start the detection of concealed nodes.
Concrete, STA begins to send NULL frame or other particular frames; While is at NULL frame or other particular frames of working channel or other STA nodes transmissions of all Channel Detection, to find visible STA; And the start detection notice message about concealed nodes that sends at other AP of working channel or all Channel Detection, to find visible AP.
STA starts outside the detection of concealed nodes except when the start detection about concealed nodes that receives the AP transmission is notified message, and initiatively initiation is to the detection of concealed nodes, and for this situation about initiatively initiating, above-mentioned steps s501 is optional.For example: when STA arrives in default concealed nodes sense cycle, start the detection of concealed nodes; Or STA starts the detection of concealed nodes according to default event trigger mechanism.
Step s503, AP send message to STA, require STA to report testing result.
Step s504, STA report testing result to give AP; AP further is transmitted to AC with the testing result that STA reports.
Concrete, STA reports outside the testing result except when reporting of the testing result that receives the AP transmission notified message, can also initiatively report testing result, and for this situation about initiatively reporting, above-mentioned steps s503 is optional.For example: when STA arrives at default testing result report cycle, report testing result; Or STA reports testing result according to default event trigger mechanism.
The testing result that step s505, AP report according to STA is analyzed to determine whether to exist under this AP and is hidden the STA node; AC determines whether whether to exist hiding AP node according to testing result under this AC.If there is concealed nodes, then AP and AC open the concealed nodes protection mechanism; Concrete, the AP notice is hidden the STA node and is opened the concealed nodes protection mechanism.The AC notice is hidden the AP node and is opened the concealed nodes protection mechanism.Certainly, also can all send notice respectively, start the concealed nodes protection mechanism of all STA and AP all STA and AP.
In this step, the testing result that AP reports according to STA, analysis determines whether exist the method for hiding the STA node to be specifically as follows under this AP: AP collects the testing result of all STA (comprising STA that is associated with this AP and the STA that is associated with other AP) transmission that can listen in the channel, confirm between any two whether mutually as seen each STA, if find that having a STA1 is invisible for another STA2, determine that then STA2 is the hiding STA node of STA1.
Whether in this step, AC is according to testing result, determine whether to exist under this AC the method for hiding the AP node to be specifically as follows: at certain AP such as AP1, AC collects the STA information in the channel of this AP1; AC confirms the associated AP of each STA (as AP2, AP3...) for other STA that are not associated with AP1, forms the hiding AP tabulation to be detected of this AP1.Other AP information that AC further reports according to this AP1, judge in the hiding AP tabulation to be detected AP for AP1 whether all as seen, if exist an AP such as AP2 not in other AP information that AP1 reports in the hiding AP tabulation to be detected, think that then AP2 is hiding AP node for AP1.
Afterwards, if AP or AC judge that according to the up-to-date informix of receiving when not having concealed nodes, notice has been opened the node of concealed nodes protection mechanism, Node Protection mechanism unhides.
For the FatAP framework, be with the difference of above-mentioned flow process shown in Figure 5, STA is carried out detection trigger and the step that stops to detect can be configured by Network Management Equipment on AP.AP regularly (this time interval can according to circumstances be configured) notifies message to the STA transmission about the start detection of concealed nodes at working channel, requires Station to begin to start concealed nodes and detects; This start detection notice message can be broadcasting packet or multicast message.Certainly STA starts the detection of concealed nodes when default concealed nodes sense cycle arrives; Or STA starts the detection of concealed nodes according to default event trigger mechanism.
Whether STA sends testing result to the AP of network side after measurement is finished, carry out analysis-by-synthesis by AP according to testing result, determine to exist under this AP and hide the STA node and determine whether have hiding AP node for self AP equipment, and is concrete:
Determine whether exist the method for hiding the STA node to be specifically as follows under self AP equipment: AP collects the testing result of all STA (comprising STA that is associated with this AP and the STA that is associated with other AP) transmission that can listen in the channel, confirm between any two whether mutually as seen each STA, if find that having a STA1 is invisible for another STA2, determine that then STA2 is the hiding STA node of STA1.The hiding STA node that AP will find reports Network Management Equipment.
Determine whether to exist the method for hiding the AP node to be specifically as follows: AP is not to being associated with the STA of oneself in the channel, confirm that its related AP (can report receiver address in the message by STA, perhaps pass through other information of this STA), and whether as seen to confirm between own and these AP (by intercepting the message that other AP send in the working channel), if there is sightless AP, then thinks to exist and hide the AP node.The hiding AP node that AP will find reports Network Management Equipment.
In the said method provided by the invention, carry out the detection of concealed nodes and report testing result to network side by STA; Network side is analyzed testing result and is determined whether concealed nodes exists; When concealed nodes exists, only concealed nodes is implemented the concealed nodes protection mechanism, thereby saved interface-free resources, avoided the performance decrease of eating dishes without rice or wine.
The present invention also provides a kind of terminal STA equipment, as shown in Figure 6, comprising:
Detecting unit 11 is used to send the detection frame about concealed nodes, and the detection frame of other STA transmissions and/or the start detection notice message about concealed nodes of each AP transmission are detected;
Testing result reports unit 12, is used for sending to network side the testing result of detecting unit 11, finds concealed nodes by network side according to testing result.
In addition, also comprise:
Detect start unit 13, be used for: receive that network side AP sends about the start detection notice message of concealed nodes the time, notify described detecting unit start detection; Or when default concealed nodes sense cycle arrives, notify described detecting unit start detection; Or, notify described detecting unit start detection according to default event trigger mechanism.
Testing result reports start unit 14, and what be used to receive testing result that network side AP sends reports the notice message, notifies described testing result to report unit 12 to report testing result; Or when default testing result report cycle arrives, notify described testing result to report unit 12 to report testing result; Or, notify described testing result to report unit 12 to report testing result according to default event trigger mechanism.
The present invention also provides a kind of access point AP, as shown in Figure 7, comprising:
Testing result receiving element 22 is used to receive the testing result that described STA sends;
Concealed nodes is found unit 23, is used for the testing result that receives according to described testing result receiving element 22, finds concealed nodes; This concealed nodes is found unit 23, specifically is used for:
(1) when AP is Fit AP,, judges under self AP equipment whether have hiding STA node according to the testing result that STA sends; And the testing result that STA sends reported AC, judge under self AC equipment whether have hiding AP node by AC;
(2) when AP is Fat AP,, judges under self AP equipment, whether to exist and hide the STA node and determine whether to exist hiding AP node according to the testing result that STA sends.
Concealed nodes notification unit 24 is used for finding that to described concealed nodes unit 23 detected concealed nodes send notice, start the concealed nodes protection mechanism.
The present invention also provides a kind of access control equipment AC, as shown in Figure 8, comprising:
Testing result receiving element 31 is used to receive the testing result by the STA transmission that AP transmits;
Concealed nodes is found unit 32, is used for the testing result that receives according to described testing result receiving element, finds to hide the AP node;
Concealed nodes notification unit 33 is used for finding that to described concealed nodes the detected hiding AP node in unit sends notice, starts the concealed nodes protection mechanism.
In the said equipment provided by the invention, carry out the detection of concealed nodes and report testing result to network side by STA; Network side is analyzed testing result and is determined whether concealed nodes exists; When concealed nodes exists, only concealed nodes is implemented the concealed nodes protection mechanism, thereby saved interface-free resources, avoided the performance decrease of eating dishes without rice or wine.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, unit in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the unit in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.A unit can be merged in the unit of the foregoing description, also can further split into a plurality of subelements.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
Claims (11)
1. the detection method of a concealed nodes is characterized in that, comprising:
Terminal STA sends the detection frame about concealed nodes, and the detection frame of other STA transmissions and/or the start detection notice message about concealed nodes of each AP transmission are detected;
Described STA sends testing result to network side, finds concealed nodes by network side according to described testing result.
2. the method for claim 1 is characterized in that, before the detection frame of described terminal STA transmission about concealed nodes, also comprises:
Described STA receives the start detection notice message about concealed nodes that network side AP sends, and starts the detection of concealed nodes; Or
When described STA arrives in default concealed nodes sense cycle, start the detection of concealed nodes; Or
Described STA starts the detection of concealed nodes according to default event trigger mechanism.
3. the method for claim 1 is characterized in that, described STA also comprises before network side sends testing result:
What described STA received testing result that network side AP sends reports the notice message, and start detection result reports; Or
When described STA arrived at default testing result report cycle, start detection result reported; Or
Described STA is according to default event trigger mechanism, and start detection result reports.
4. as each described method in the claim 1 to 3, it is characterized in that described network side is found concealed nodes according to described testing result, comprising:
When the AP of described network side was Fit AP, each AP was according to the testing result that STA sends, and judged under self AP equipment whether have hiding STA node; Each AP reports AC with the testing result that STA sends, and judges under self AC equipment whether have hiding AP node by AC;
Detect the AP that hides the STA node and send notice, start the concealed nodes protection mechanism to hiding STA node; Detect the AC that hides the AP node and send notice, start the concealed nodes protection mechanism to hiding AP node.
5. as each described method in the claim 1 to 3, it is characterized in that described network side is found concealed nodes according to described testing result, comprising:
When the AP of described network side was Fat AP, each AP was according to the testing result that STA sends, and judged whether to have hiding STA node under self AP equipment and whether have hiding AP node for self AP equipment; Detect the AP that hides the STA node and send notice, start the concealed nodes protection mechanism to hiding STA node; Detect the AP that hides the AP node and send notice, start the concealed nodes protection mechanism to detected hiding AP node.
6. a terminal STA equipment is characterized in that, comprising:
Detecting unit is used to send the detection frame about concealed nodes, and the detection frame of other STA transmissions and/or the start detection notice message about concealed nodes of each AP transmission are detected;
Testing result reports the unit, is used for sending to network side the testing result of described detecting unit, finds concealed nodes by network side according to described testing result.
7. equipment as claimed in claim 6 is characterized in that, also comprises:
Detect start unit, be used for: receive that network side AP sends about the start detection notice message of concealed nodes the time, notify described detecting unit start detection; Or when default concealed nodes sense cycle arrives, notify described detecting unit start detection; Or, notify described detecting unit start detection according to default event trigger mechanism.
8. equipment as claimed in claim 6 is characterized in that, also comprises:
Testing result reports start unit, and what be used to receive testing result that network side AP sends reports the notice message, notifies described testing result to report the unit to report testing result; Or when default testing result report cycle arrives, notify described testing result to report the unit to report testing result; Or, notify described testing result to report the unit to report testing result according to default event trigger mechanism.
9. an access point AP is characterized in that, comprising:
The detection notice unit is used for the start detection notice message about concealed nodes to STA;
The testing result receiving element is used to receive the testing result that described STA sends;
Concealed nodes is found the unit, is used for the testing result that receives according to described testing result receiving element, finds concealed nodes;
The concealed nodes notification unit is used for finding that to described concealed nodes the detected concealed nodes in unit sends notice, starts the concealed nodes protection mechanism.
10. AP as claimed in claim 9 is characterized in that, described concealed nodes is found the unit, specifically is used for:
When described AP is Fit AP,, judge under self AP equipment whether have hiding STA node according to the testing result that STA sends; And the testing result that STA sends reported AC, judge under self AC equipment whether have hiding AP node by AC;
When described AP is Fat AP,, judges whether to exist under self AP equipment to hide the STA node and determine whether to exist and hide the AP node according to the testing result that STA sends.
11. an access control equipment AC is characterized in that, comprising:
The testing result receiving element is used to receive the testing result by the STA transmission that AP transmits;
Concealed nodes is found the unit, is used for the testing result that receives according to described testing result receiving element, finds to hide the AP node;
The concealed nodes notification unit is used for finding that to described concealed nodes the detected hiding AP node in unit sends notice, starts the concealed nodes protection mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910260031.XA CN101711037B (en) | 2009-12-23 | 2009-12-23 | Method and device for detecting hidden node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910260031.XA CN101711037B (en) | 2009-12-23 | 2009-12-23 | Method and device for detecting hidden node |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101711037A true CN101711037A (en) | 2010-05-19 |
| CN101711037B CN101711037B (en) | 2014-12-24 |
Family
ID=42403792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910260031.XA Active CN101711037B (en) | 2009-12-23 | 2009-12-23 | Method and device for detecting hidden node |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101711037B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045745A (en) * | 2010-12-17 | 2011-05-04 | 北京星网锐捷网络技术有限公司 | Hidden node detection method and equipment |
| CN103249166A (en) * | 2012-02-01 | 2013-08-14 | 中兴通讯股份有限公司 | Method and device and system for starting RTS/CTS mechanism |
| CN104754601A (en) * | 2013-12-26 | 2015-07-01 | ***通信集团公司 | Hidden node detection method, network node and server |
| CN105263158A (en) * | 2015-09-06 | 2016-01-20 | 江苏中兴微通信息科技有限公司 | Method for detecting hidden node pairs in enhanced wireless local area network |
| WO2016110241A1 (en) * | 2015-01-08 | 2016-07-14 | 中兴通讯股份有限公司 | Method and system for detecting hidden station, station and computer storage medium |
| CN106060859A (en) * | 2016-06-30 | 2016-10-26 | 杭州华三通信技术有限公司 | AP (Access Point) fault detection and restoration method and device |
| CN106961696A (en) * | 2017-04-28 | 2017-07-18 | 扬州大学 | A kind of evitable group technology of WLAN concealed terminal |
| CN107079302A (en) * | 2014-12-03 | 2017-08-18 | 诺基亚通信公司 | Concealed nodes detection in LTE license auxiliary accesses |
| CN107277848A (en) * | 2016-04-06 | 2017-10-20 | ***通信有限公司研究院 | A kind of determination method and device of concealed nodes |
| CN105101222B (en) * | 2014-07-28 | 2018-09-14 | 魅族科技（中国）有限公司 | A kind of based on WLAN data processing method, relevant device and system |
| CN108809478A (en) * | 2017-04-28 | 2018-11-13 | 华为技术有限公司 | A kind of frame sending method and relevant device |
| CN109479198A (en) * | 2016-07-11 | 2019-03-15 | 阿尔卡特朗讯公司 | The method and apparatus for controlling wireless access point |
| CN113438688A (en) * | 2021-06-24 | 2021-09-24 | 普联技术有限公司 | Detection method and detection device for hidden node |
| CN116939603A (en) * | 2023-09-13 | 2023-10-24 | 微网优联科技(成都)有限公司 | Wifi safety protection system and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19921716A1 (en) * | 1999-05-12 | 2000-11-16 | Philips Corp Intellectual Pty | Wireless network with concealed network node transfer node connected to concealed node for exchanging certain data of central node with concealed node |
| US7130289B2 (en) * | 2002-03-14 | 2006-10-31 | Airmagnet, Inc. | Detecting a hidden node in a wireless local area network |
| CN100534068C (en) * | 2007-02-16 | 2009-08-26 | 北京航空航天大学 | Non-confliction on-demand multi-address access method |
-
2009
- 2009-12-23 CN CN200910260031.XA patent/CN101711037B/en active Active
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045745A (en) * | 2010-12-17 | 2011-05-04 | 北京星网锐捷网络技术有限公司 | Hidden node detection method and equipment |
| CN103249166A (en) * | 2012-02-01 | 2013-08-14 | 中兴通讯股份有限公司 | Method and device and system for starting RTS/CTS mechanism |
| CN103249166B (en) * | 2012-02-01 | 2016-06-08 | 中兴通讯股份有限公司 | The starting method of a kind of RTS/CTS mechanism and device, system |
| CN104754601A (en) * | 2013-12-26 | 2015-07-01 | ***通信集团公司 | Hidden node detection method, network node and server |
| CN104754601B (en) * | 2013-12-26 | 2019-01-08 | ***通信集团公司 | A kind of concealed nodes detection method, network node and server |
| CN105101222B (en) * | 2014-07-28 | 2018-09-14 | 魅族科技（中国）有限公司 | A kind of based on WLAN data processing method, relevant device and system |
| CN107079302A (en) * | 2014-12-03 | 2017-08-18 | 诺基亚通信公司 | Concealed nodes detection in LTE license auxiliary accesses |
| US11323998B2 (en) | 2014-12-03 | 2022-05-03 | Nokia Solutions And Networks Oy | Hidden node detection in LTE licensed assisted access |
| WO2016110241A1 (en) * | 2015-01-08 | 2016-07-14 | 中兴通讯股份有限公司 | Method and system for detecting hidden station, station and computer storage medium |
| CN105263158A (en) * | 2015-09-06 | 2016-01-20 | 江苏中兴微通信息科技有限公司 | Method for detecting hidden node pairs in enhanced wireless local area network |
| CN105263158B (en) * | 2015-09-06 | 2018-10-23 | 江苏中兴微通信息科技有限公司 | The detection method of concealed nodes pair in a kind of enhanced wireless LAN |
| CN107277848A (en) * | 2016-04-06 | 2017-10-20 | ***通信有限公司研究院 | A kind of determination method and device of concealed nodes |
| CN107277848B (en) * | 2016-04-06 | 2020-04-28 | ***通信有限公司研究院 | Hidden node determination method and device |
| CN106060859A (en) * | 2016-06-30 | 2016-10-26 | 杭州华三通信技术有限公司 | AP (Access Point) fault detection and restoration method and device |
| CN109479198B (en) * | 2016-07-11 | 2023-06-30 | 阿尔卡特朗讯公司 | Method and apparatus for controlling wireless access point |
| CN109479198A (en) * | 2016-07-11 | 2019-03-15 | 阿尔卡特朗讯公司 | The method and apparatus for controlling wireless access point |
| CN108809478A (en) * | 2017-04-28 | 2018-11-13 | 华为技术有限公司 | A kind of frame sending method and relevant device |
| CN108809478B (en) * | 2017-04-28 | 2020-10-23 | 华为技术有限公司 | Frame sending method and related equipment |
| CN106961696B (en) * | 2017-04-28 | 2020-10-16 | 扬州大学 | Avoidable grouping method for hidden terminals of wireless local area network |
| CN106961696A (en) * | 2017-04-28 | 2017-07-18 | 扬州大学 | A kind of evitable group technology of WLAN concealed terminal |
| CN113438688A (en) * | 2021-06-24 | 2021-09-24 | 普联技术有限公司 | Detection method and detection device for hidden node |
| CN116939603A (en) * | 2023-09-13 | 2023-10-24 | 微网优联科技(成都)有限公司 | Wifi safety protection system and method |
| CN116939603B (en) * | 2023-09-13 | 2023-12-05 | 微网优联科技(成都)有限公司 | Wifi safety protection system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101711037B (en) | 2014-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101711037B (en) | Method and device for detecting hidden node | |
| US9788304B2 (en) | Preamble sequence transmission method, apparatus, and system | |
| TWI733740B (en) | Methods and apparatus for paging in unlicensed communication channels | |
| US9826494B2 (en) | Method and apparatus for transmitting D2D signals | |
| CN102484845B (en) | Channel scanning method in wireless local area network (WLAN) system | |
| US8897788B2 (en) | Techniques to provide measurement pilot transmission information in wireless networks | |
| JP6772256B2 (en) | Broadcast ranging message for WLAN RTT measurement | |
| EP2844018A1 (en) | Method and apparatus for discovering wireless network | |
| US9198012B2 (en) | Communication apparatus and communication method for extracting notification information from received signal and transmitting notification information | |
| EP2717499A1 (en) | Method and device for acquiring idle frequency spectrum | |
| US10193666B2 (en) | Method, access point, server and station used for coordinated transmission | |
| KR20070106008A (en) | Beacon transmission for wireless networks | |
| CN108810934B (en) | Method for transmitting and receiving common control information, base station, terminal and storage medium | |
| CN104185217A (en) | Parallel data transmission processing method and device | |
| US9693253B2 (en) | Systems and methods for nearby channel measurement | |
| WO2022057901A1 (en) | Channel access method in wireless local area network, and related apparatus | |
| CN102045745A (en) | Hidden node detection method and equipment | |
| WO2015035619A1 (en) | Method, device, and system for information transmission | |
| WO2019107361A1 (en) | User device | |
| WO2022117087A1 (en) | Method and device for positioning on sidelink (sl), and terminal | |
| CN109005579A (en) | A kind of method, apparatus and computer storage medium of power control | |
| WO2016070693A1 (en) | Method and device for transmitting preamble signal | |
| WO2017041629A1 (en) | Active scanning processing method and related device and communication system | |
| CN106470413B (en) | Method and device for processing proximity service in multiple carriers | |
| WO2020063377A1 (en) | Method for transmitting downlink control channel, terminal and network side device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Patentee after: Xinhua three Technology Co., Ltd. Address before: 310053 Hangzhou hi tech Industrial Development Zone, Zhejiang province science and Technology Industrial Park, No. 310 and No. six road, HUAWEI, Hangzhou production base Patentee before: Huasan Communication Technology Co., Ltd. |