CN109617636A - Anti-interference method, system, user equipment and the storage medium of WIFI equipment - Google Patents
Anti-interference method, system, user equipment and the storage medium of WIFI equipment Download PDFInfo
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- CN109617636A CN109617636A CN201811602144.9A CN201811602144A CN109617636A CN 109617636 A CN109617636 A CN 109617636A CN 201811602144 A CN201811602144 A CN 201811602144A CN 109617636 A CN109617636 A CN 109617636A
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- 238000005259 measurement Methods 0.000 claims description 6
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
- H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
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Abstract
The invention discloses a kind of anti-interference method of WIFI equipment, system, user equipment and storage mediums, the WIFI equipment anti-interference ability optimization method is analyzed by the signal based on energy measuring, and the MAC layer packet of WIFI sends statistic in preset time period, the disturbed condition of WIFI equipment is obtained, and determines to set dynamic threshold value for disturbed condition and is directed to different adjusting thresholds Anti-interference Strategies.The present invention, which solves the problems, such as that existing technology exists, to adjust Anti-interference Strategy according to actual interference situation dynamic；Reach in interference environment, reduced WIFI packet loss, has improved the serious technical effect retransmitted and improve connective stability.
Description
Technical field
The present invention relates to radio network technique field more particularly to a kind of anti-interference methods of WIFI equipment, system, user
Equipment and storage medium.
Background technique
2.4G frequency range is also known as ISM band, and (the Industrial Scientific Medical Chinese meaning is industry respectively
, it is scientific and medicine, therefore ISM band is exactly that move out of a certain section of frequency range mainly open to industry, section for various countries as its name suggests
Learn and medical facility use), belong to open frequency range, without the authorization wireless communication technique of a few class mainstreams on the market at present, such as
WIFI (WLAN), bluetooth, low-power consumption local area network all work in frequency range as wireless telecommunications system quantity increasingly increases
It is long, cause the interference signal in 2.4G frequency range to be continuously increased；On the other hand, the bandwidth chahnel that WIFI equipment is supported increases from 20M
To 40M, it is further exacerbated by channel noisy degree, so that WIFI packet loss caused by interfering, serious re-transmission, connect unstable ask
Topic, it is increasingly severe.
Summary of the invention
The main purpose of the present invention is to provide WIFI equipment anti-interference method, system, user equipment and storage medium, purports
Solving WIFI equipment in the prior art, in interference environment, WIFI packet loss seriously retransmits and connects unstable problem.
In order to achieve the above objectives, the present invention proposes a kind of WIFI equipment anti-interference method, the anti-interference side of WIFI equipment
Method the following steps are included:
It carries out signal to listen to, obtains space medium state and energy measure；
When the space medium state is busy, the energy measure is compared with preset threshold；
When the energy measure is less than preset threshold, determine that current interference signal is dry less than the adjacent frequency signal of threshold value
It disturbs or out of band signal interferes, target data is carried out to repeat transmission, and verify whether the target data sends success；
When the target data is not sent successful within a preset time, reduce the preset threshold, and return to the progress
The step of signal is listened to, and space medium state and energy measure are obtained.
Preferably, when the space medium state is busy, the energy measure is compared with preset threshold
Later, the optimization method of the WIFI equipment anti-interference ability is further comprising the steps of:
When the energy measure is more than or equal to preset threshold, determine that current interference signal is the adjacent frequency not less than threshold value
Signal interference or out of band signal interference, pause sends target data, and is periodically detected energy measure；
When preset time self-energy measured value is all larger than preset threshold, increase the preset threshold, and return it is described into
The step of row signal is listened to, and space medium state and energy measure are obtained.
Preferably, before the step of progress signal listens to, obtains space medium state and energy measure；It is described
The optimization method of WIFI equipment anti-interference ability is further comprising the steps of:
It is leading based on PLCP (Physical Layer Convergence Protocol Physical layer convergence protocol layer) fixation
Sequence carries out signal and listens to, and obtains the space medium state and PLCP energy measure of PLCP；
When PLCP spatiality is idle, it is normally carried out data transmission, when PLCP spatiality is busy, executes void
Quasi- carrier wave detects avoidance mechanism, and whether detection data sends success；
When being more than that predetermined time data continues not sent success, executes the WIFI equipment progress signal and listen to, obtain
The step of space medium state and energy measure.
Preferably, when the target data is not sent successful within a preset time, reduce the preset threshold, and return to institute
It states and carries out the step of signal listens to, obtains space medium state and energy measure, specifically include:
The MAC layer packet for counting WIFI in preset time period sends state, obtains error code packet variation tendency and retransmits packet variation
Trend；
When the target data is not sent successful within a preset time, and the error code packet variation tendency and re-transmission packet variation
When trend is growth trend, reduce preset threshold, and return to the WIFI equipment progress signal and listen to, obtains space medium state
And the step of energy measure；
When data are sent successfully, and the error code packet variation tendency and re-transmission packet variation tendency are growth trend, increase
Preset threshold.
Preferably, when PLCP spatiality is idle, it is normally carried out data transmission, when PLCP spatiality is busy
When, the step of virtual carrier detects avoidance mechanism is executed, is specifically included:
When PLCP spatiality is idle, it is normally carried out data transmission, when PLCP spatiality is busy, is compared
The size of PLCP energy measure and PLCP preset threshold；
When PLCP energy measure is not less than PLCP preset threshold, determine that interference signal is co-channel interference, executes virtual
Carrier wave detects avoidance mechanism；
When PLCP energy measure is less than PLCP preset threshold, determine that interference signal has co-channel interference and adjacent frequency letter simultaneously
Number or out of band signal interference, execute virtual carrier and detect avoidance mechanism, and whether detection data sends success.
Preferably, when PLCP energy measure is not less than PLCP preset threshold, interference signal is co-channel interference, executes void
After the step of quasi- carrier wave detection avoidance mechanism, the anti-interference method of the WIFI equipment further include:
The MAC layer packet for counting WIFI in preset time period sends state, obtains error code packet variation tendency, retransmits to wrap to change and
Gesture；
When data are sent successfully, and the error code packet variation tendency and re-transmission packet variation tendency are downward trend, increase
PLCP preset threshold.
Preferably, the MAC layer packet for counting WIFI in preset time period sends state, obtains error code packet variation tendency, retransmits
After packet variation tendency, the anti-interference method of the WIFI equipment further include:
When data send failure, and the error code packet variation tendency and re-transmission packet variation tendency are growth trend, reduce
PLCP preset threshold, and return is described when PLCP spatiality is idle, data transmission is normally carried out, when PLCP spatiality
When being busy, executes virtual carrier and detect avoidance mechanism, and whether detection data sends successful step.
The present invention also proposes that a kind of jamproof system of WIFI equipment, the jamproof system include:
Energy detection unit is listened to for carrying out signal, obtains space medium state and energy measure；
Energy comparison unit is used for when the space medium state is busy, to the energy measure and default threshold
Value is compared；
Anti-interference unit, for when the energy measure be less than preset threshold when, determine current interference signal be less than
The adjacent frequency signal interference or out of band signal of threshold value are interfered, and carry out repeating transmission to target data, and verify the target data to be
It is no to send successfully；Within a preset time when the not sent success of the target data, reduce the preset threshold, and return it is described into
The step of row signal is listened to, and space medium state and energy measure are obtained.
The present invention also proposes a kind of user equipment, and the user equipment includes: memory, processor and is stored in described deposit
The anti-interference program of WIFI equipment, the anti-interference program quilt of the WIFI equipment can be run on reservoir and on the processor
The step of anti-interference method of the WIFI equipment as described in any one of claims 1 to 7 is realized when the processor executes.
The present invention also proposes a kind of storage medium, and the anti-interference program of WIFI equipment, institute are stored on the storage medium
It states when the anti-interference program of WIFI equipment is executed by processor using the WIFI equipment as described in any one of claims 1 to 7
Anti-interference method the step of.
Technical solution of the present invention counts data transmission state, after WIFI connection to surrounding by the way that threshold value is arranged
Interference is detected, and according to the number such as the variation tendency of the data transmission state counted and the WIFI disturbed condition detected
According to, threshold value is dynamically adjusted, implements different Anti jamming Schemes for the disturbance situation that threshold value defines, with improve
Data transmission bauds and WIFI connective stability of the WIFI equipment in disturbance environment；Technical solution of the present invention can improve
Connection disconnection, packet loss and serious the problem of retransmitting that existing WIFI equipment occurs in interference environment, reach in interference environment,
WIFI packet loss is reduced, the serious technical effect retransmitted and improve connective stability is improved.
Detailed description of the invention
Fig. 1 is the user device architecture schematic diagram for the hardware running environment that the embodiment of the present invention is related to；
Fig. 2 is the flow diagram of WIFI equipment anti-interference method first embodiment of the present invention；
Fig. 3 is the flow diagram of WIFI equipment anti-interference method second embodiment of the present invention；
Fig. 4 is the flow diagram of WIFI equipment anti-interference method 3rd embodiment of the present invention；
Fig. 5 is the flow diagram of WIFI equipment anti-interference method fourth embodiment of the present invention；
Fig. 6 is the functional block diagram of WIFI equipment means for anti-jamming of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the object of the invention, functional characteristics and advantage.
Specific embodiment
It should be appreciated that described herein, specific examples are only used to explain the present invention, is not intended to limit the present invention.
Referring to Fig.1, Fig. 1 is the user device architecture schematic diagram for the hardware running environment that the embodiment of the present invention is related to.
As shown in Figure 1, the user equipment may include: processor 1001, such as CPU, communication bus 1002, Yong Hujie
Mouth 1003, network interface 1004, memory 1005.Wherein, communication bus 1002 is logical for realizing the connection between these components
Letter.User interface 1003 may include display screen (Display), and optional user interface 1003 can also include that the wired of standard connects
Mouth, wireless interface.Network interface 1004 optionally may include standard wireline interface and wireless interface (such as WI-FI interface).
Memory 1005 can be high speed RAM memory, be also possible to stable memory (non-volatile memory), such as
Magnetic disk storage.Memory 1005 optionally can also be the storage medium independently of aforementioned processor 1001.
It will be understood by those skilled in the art that structure shown in Fig. 1 does not constitute the restriction to the user equipment, it can
To include perhaps combining certain components or different component layouts than illustrating more or fewer components.
As shown in Figure 1, as may include operating system, network communication mould in a kind of memory 1005 of storage medium
Block, Subscriber Interface Module SIM and the anti-interference program of WIFI equipment.
In the network equipment shown in Fig. 1, network interface 1004 is mainly used for connecting background server, takes with the backstage
Business device carries out data communication；User interface 1003 is mainly used for connecting peripheral hardware；The network equipment is called by processor 1001
The anti-interference program of the WIFI equipment stored in memory 1005, and execute following operation:
It carries out signal to listen to, obtains space medium state and energy measure；
When the space medium state is busy, the energy measure is compared with preset threshold；
When the energy measure is less than preset threshold, determine that current interference signal is dry less than the adjacent frequency signal of threshold value
It disturbs or out of band signal interferes, target data is carried out to repeat transmission, and verify whether the target data sends success；
When the target data is not sent successful within a preset time, reduce the preset threshold, and return to the progress
The step of signal is listened to, and space medium state and energy measure are obtained.
Further, processor 1001 can call the anti-interference program of the WIFI equipment stored in memory 1005, also hold
The following operation of row:
When the energy measure is more than or equal to preset threshold, determine that current interference signal is the adjacent frequency not less than threshold value
Signal interference or out of band signal interference, pause sends target data, and is periodically detected energy measure；
When preset time self-energy measured value is all larger than preset threshold, increase the preset threshold, and return it is described into
The step of row signal is listened to, and space medium state and energy measure are obtained.
Further, processor 1001 can call the anti-interference program of the WIFI equipment stored in memory 1005, also hold
The following operation of row:
Signal is carried out based on PLCP layers of fixed leader sequence to listen to, and obtains the space medium state and PLCP energy of PLCP
Measured value；
When PLCP spatiality is idle, it is normally carried out data transmission, when PLCP spatiality is busy, executes void
Quasi- carrier wave detects avoidance mechanism, and whether detection data sends success；
When being more than that predetermined time data continues not sent success, executes the WIFI equipment progress signal and listen to, obtain
The step of space medium state and energy measure.
Further, processor 1001 can call the anti-interference program of the WIFI equipment stored in memory 1005, also hold
The following operation of row:
Count MAC (Media Access Control media access control layer) the layer packet hair of WIFI in preset time period
State is sent, error code packet variation tendency is obtained and retransmits packet variation tendency；
When the target data is not sent successful within a preset time, and the error code packet variation tendency and re-transmission packet variation
When trend is growth trend, reduce preset threshold, and return to the WIFI equipment progress signal and listen to, obtains space medium state
And the step of energy measure；
When data are sent successfully, and the error code packet variation tendency and re-transmission packet variation tendency are growth trend, increase
Preset threshold.
Further, processor 1001 can call the anti-interference program of the WIFI equipment stored in memory 1005, also hold
The following operation of row:
When PLCP spatiality is idle, it is normally carried out data transmission, when PLCP spatiality is busy, is compared
The size of PLCP energy measure and PLCP preset threshold；
When PLCP energy measure is not less than PLCP preset threshold, determine that interference signal is co-channel interference, executes virtual
Carrier wave detects avoidance mechanism；
When PLCP energy measure is less than PLCP preset threshold, determine that interference signal has co-channel interference and adjacent frequency letter simultaneously
Number or out of band signal interference, execute virtual carrier and detect avoidance mechanism, and whether detection data sends success.
Further, processor 1001 can call the anti-interference program of the WIFI equipment stored in memory 1005, also hold
The following operation of row:
The MAC layer packet for counting WIFI in preset time period sends state, obtains error code packet variation tendency, retransmits to wrap to change and
Gesture；
When data are sent successfully, and the error code packet variation tendency and re-transmission packet variation tendency are downward trend, increase
PLCP preset threshold.
Further, processor 1001 can call the anti-interference program of the WIFI equipment stored in memory 1005, also hold
The following operation of row:
When data send failure, and the error code packet variation tendency and re-transmission packet variation tendency are growth trend, reduce
PLCP preset threshold, and return is described when PLCP spatiality is idle, data transmission is normally carried out, when PLCP spatiality
When being busy, executes virtual carrier and detect avoidance mechanism, and whether detection data sends successful step.
Technical solution of the present invention counts data transmission state, after WIFI connection to surrounding by the way that threshold value is arranged
Interference is detected, and according to the number such as the variation tendency of the data transmission state counted and the WIFI disturbed condition detected
According to, threshold value is dynamically adjusted, implements different Anti jamming Schemes for the disturbance situation that threshold value defines, with improve
Data transmission bauds and WIFI connective stability of the WIFI equipment in disturbance environment；Technical solution of the present invention can improve
Connection disconnection, packet loss and serious the problem of retransmitting that existing WIFI equipment occurs in interference environment, reach in interference environment,
WIFI packet loss is reduced, the serious technical effect retransmitted and improve connective stability is improved.
Based on above-mentioned hardware configuration, the embodiment of WIFI equipment anti-interference method of the present invention is proposed.
As shown in Fig. 2, the user equipment is in the first embodiment, the WIFI equipment anti-interference method includes following step
It is rapid:
S10, progress signal are listened to, and space medium state and energy measure are obtained.
It should be noted that space medium state only have it is busy and two kinds idle, when space medium state is idle, number
According to can normally send, without executing Anti-interference Strategy, when space medium state is busy, it is dry to illustrate that current radio environment exists
Situation is disturbed, normal data is sent there are some problems, and energy measure can react the annoyance level of current spatial, energy measurement
Value is bigger, interferes bigger.
S20, when the space medium state be it is busy when, the energy measure is compared with preset threshold.
It is worth noting that space medium state is all busy, however works as space in the case where simply by the presence of certain interference
When medium is that busy but energy measure is smaller, data still can be successfully transmitted, preset threshold herein is then laboratory
Using the product with model under environment, energy measure when data can not be just issued.
S30, when the energy measure be less than preset threshold when, determine current interference signal be less than threshold value adjacent frequency believe
Number interference or out of band signal interference, carry out target data to repeat transmission, and verify whether the target data sends success.
It can be readily appreciated that data can be sent by laboratory test when energy measure is less than preset value,
So at this time sending data by way of repeating to send, to resist the interference of environment, and verify whether to send successfully.
When S40, the within a preset time target data are not sent successful, reduce the preset threshold, and described in return
Carry out the step of signal listens to, obtains space medium state and energy measure.
It should be noted that there are certain difference for actual environment comparative experiments room environmental, so ought actually number of targets
When according to that can not send successfully, which does not meet actual conditions, and setting is bigger than normal, so reducing preset threshold at this time, lays equal stress on
It is newly listened to and data is sent；There may be actual working environment is not met, this is walked for single fixed threshold setting
Suddenly in such a way that dynamic adjusts threshold value, so that threshold value is more in line with actual working condition to realize the anti-dry of WIFI equipment
It disturbs.
The present embodiment is by setting threshold value, after the WIFI connection, interferes surrounding and detects, and according to detecting
The data such as WIFI disturbed condition dynamically adjust threshold value, to improve data of the WIFI equipment in disturbance environment
Transmission speed and WIFI connective stability, technical solution of the present invention can improve what existing WIFI equipment occurred in interference environment
Connection disconnects, packet loss and serious the problem of retransmitting, and has reached in interference environment, has reduced WIFI packet loss, improve it is serious retransmit and
Improve the technical effect of connective stability.
As shown in figure 3, in a second embodiment after the S20, the optimization method of the WIFI equipment anti-interference ability
It is further comprising the steps of:
S21, when the energy measure be more than or equal to preset threshold when, determine current interference signal be not less than threshold value
Adjacent frequency signal interference or out of band signal interference, pause sends target data, and is periodically detected energy measure.
It can be readily appreciated that when the energy measure is more than or equal to preset threshold, in laboratory environments, at this time
There are very big limit values for the data transmission capabilities of WIFI equipment, can not send data, so pause data are sent, and are periodically detected
Energy measure, when energy measure is less than threshold value Shi Zehui automatically into S30 step.
It should be noted that the purpose that pause data are sent is to avoid causing wireless environment bigger interference, other nothings
Line equipment can have good WIFI environment, and data are sent faster, and the time for waiting other radio equipment datas to be sent completely is more
Short, the purpose for being periodically detected energy measure is then that S30 step can be timely entered when wireless environment improves.
S22, when preset time self-energy measured value is all larger than preset threshold, increase the preset threshold, and return to institute
It states and carries out the step of signal listens to, obtains space medium state and energy measure.
It can be readily appreciated that judgement can when being all larger than preset threshold more than the energy measure that preset time detects
It can be that preset threshold is too small, tune up preset threshold at this time, and execute S10 step, after the comparison of S20 step, due to
Increase preset threshold so executing S30 step, carries out repeating transmission, if then problem is resolved since preset threshold is too small,
Data are successfully transmitted, if since interference environment cannot improve always, it is also desirable to which the trial for repeat transmission avoids being recognized
For network interruption.The present embodiment is by setting threshold value, after WIFI connection, interferes surrounding and detects, and according to detecting
The data such as WIFI disturbed condition, threshold value is dynamically adjusted, is implemented for the disturbance situation that threshold value defines different
Anti jamming Scheme, to improve data transmission bauds and WIFI connective stability of the WIFI equipment in disturbance environment；This
Inventive technique scheme can improve the connection that existing WIFI equipment occurs in interference environment disconnect, packet loss and what is seriously retransmitted ask
Topic, has reached in interference environment, reduces WIFI packet loss, improves the serious technical effect retransmitted and improve connective stability.
As shown in figure 4, in the third embodiment, before the S10；The WIFI equipment anti-interference method further includes
Step:
S11, it is listened to based on PLCP layers of fixed leader sequences progress signal, obtains the space medium state and PLCP energy of PLCP
Measurement.
It can be readily appreciated that being to distinguish and be by the purpose listened to based on PLCP layers of fixed leader sequences progress signal
No is co-channel interference, and co-channel interference is frequently problem in WIFI equipment use, and interference environment is more single, and there are complete
Kind solution.
S12, when PLCP spatiality is idle, be normally carried out data transmission, when PLCP spatiality is busy, hold
Row virtual carrier detects avoidance mechanism, and whether detection data sends success.
It can be readily appreciated that illustrate that wireless environment can be normally carried out data transmission when spatiality is idle, so
It is normally carried out data transmission, when space medium state is busy, illustrates to use mature virtual load there are co-channel interference
Wave detection avoidance mechanism can fight the interference, highly developed for virtual detection avoidance mechanism, repeat no more again.
S13, when being more than that predetermined time data continues not sent success, execute the WIFI equipment and carry out signal and listen to,
The step of obtaining space medium state and energy measure.
It should be noted that illustrating that virtual carrier avoidance mechanism can not when being more than that preset time continues not sent success
This disturbed condition is coped with, then judges that environmental disturbances are not only co-channel interference, so S10 step is executed, for other interference
Situation executes different Anti-interference Strategies.The present embodiment is by setting threshold value, after WIFI connection, detects to surrounding interference
It surveys, and according to data such as the WIFI disturbed conditions detected, threshold value is dynamically adjusted, the different dry defined for threshold value
It disturbs situation and implements different Anti jamming Schemes, to improve data transmission bauds and WIFI of the WIFI equipment in disturbance environment
Connective stability；Technical solution of the present invention can improve connection disconnection, the packet loss that existing WIFI equipment occurs in interference environment
With serious the problem of retransmitting, reach in interference environment, reduced WIFI packet loss, has improved and seriously retransmit and improve connective stability
Technical effect.
As shown in figure 5, in the fourth embodiment, the S12 step specifically includes:
S14, when PLCP spatiality is idle, be normally carried out data transmission, when PLCP spatiality is busy, than
Compared with PLCP energy measure and the size of PLCP preset threshold.
It can be readily appreciated that it can be readily appreciated that illustrating that wireless environment can be normally carried out when spatiality is idle
Data are sent, so being normally carried out data transmission, when space medium state is busy, are illustrated there are co-channel interference, this
When need to compare the size of PLCP energy measure and PLCP preset threshold and select corresponding processing scheme.
S15, when PLCP energy measure be not less than PLCP preset threshold when, determine interference signal be co-channel interference, execute
Virtual carrier detects avoidance mechanism.
It can be readily appreciated that illustrating that co-channel interference is more tight when PLCP energy measure is not less than PLCP preset threshold
Weight affects data transmission, so virtual carrier avoidance mechanism need to be first carried out and whether verify data sends success.
The MAC layer packet of WIFI sends state in S16, statistics preset time period, obtains error code packet variation tendency, retransmits packet change
Change trend.
It should be noted that this step is used to optimize the size of preset threshold, so that judgement is more in line with user environment, institute
The statistics done, MAC layer packet send state and include error code packet variation tendency, retransmit packet variation tendency, correct packet number statistics and silence
Time statistics only needs error code packet variation tendency herein, retransmits two parameters of packet variation tendency.
S17, it sends successfully when data, and the error code packet variation tendency and when to retransmit packet variation tendency be downward trend,
Increase PLCP preset threshold.
It can be readily appreciated that illustrating that PLCP preset threshold is less than or equal to ideal value when data are sent successfully, joining at this time
It examines error code packet variation tendency and retransmits packet variation tendency when the two variation tendency is all downward trend, illustrate wireless environment
Improve, PLCP preset threshold is less than normal, needs to increase PLCP preset threshold.
S18, when data send fail, and the error code packet variation tendency and retransmit packet variation tendency be growth trend when,
Reduce PLCP preset threshold, and return is described when PLCP spatiality is idle, data transmission is normally carried out, when the space PLCP
When state is busy, executes virtual carrier and detect avoidance mechanism, and whether detection data sends successful step.
It should be noted that illustrating that the setting of PLCP preset threshold is bigger than normal, but data send failure when data send failure
May due to adjacent frequency interfere or out-of-band interference, so need to refer to error code packet variation tendency and retransmit packet variation tendency, if the two
Variation tendency be growth trend when, that is, can determine PLCP preset threshold setting it is bigger than normal, after turning PLCP preset threshold down, hold again
Row S12 step.
S19, when PLCP energy measure is less than PLCP preset threshold, determine that interference signal has co-channel interference and a neighbour simultaneously
Frequency signal or out of band signal interference, execute virtual carrier and detect avoidance mechanism, and whether detection data sends success.
It can be readily appreciated that illustrating to count in laboratory environments when PLCP energy measure is less than PLCP preset threshold
According to being that can send successfully, virtual carrier is executed at this time and detects avoidance mechanism, and whether detection data sends successful purpose
It is, exclusion affects the case where data are sent since co-channel interference is more serious.
The present embodiment by be arranged threshold value data transmission state is counted after WIFI connection, to surrounding interfere into
Row detecting, and according to the data such as the variation tendency of the data transmission state counted and the WIFI disturbed condition detected, it is right
Threshold value is dynamically adjusted, and implements different Anti jamming Schemes for the disturbance situation that threshold value defines, to improve WIFI
Data transmission bauds and WIFI connective stability of the equipment in disturbance environment；Technical solution of the present invention can improve existing
Connection disconnection, packet loss and serious the problem of retransmitting that WIFI equipment occurs in interference environment, reaches in interference environment, reduced
WIFI packet loss improves the serious technical effect retransmitted and improve connective stability
The present embodiment also proposes a kind of storage medium, and the anti-interference program of WIFI equipment is stored on the storage medium,
Following operation is realized when the anti-interference program of the WIFI equipment is executed by processor:
When the space medium state is busy, the energy measure is compared with preset threshold；
When the energy measure is less than preset threshold, determine that current interference signal is dry less than the adjacent frequency signal of threshold value
It disturbs or out of band signal interferes, target data is carried out to repeat transmission, and verify whether the target data sends success；
When the target data is not sent successful within a preset time, reduce the preset threshold, and return to the progress
The step of signal is listened to, and space medium state and energy measure are obtained.
Preferably, when the space medium state is busy, the energy measure is compared with preset threshold
Later, the optimization method of the WIFI equipment anti-interference ability is further comprising the steps of:
When the energy measure is more than or equal to preset threshold, determine that current interference signal is the adjacent frequency not less than threshold value
Signal interference or out of band signal interference, pause sends target data, and is periodically detected energy measure；
When preset time self-energy measured value is all larger than preset threshold, increase the preset threshold, and return it is described into
The step of row signal is listened to, and space medium state and energy measure are obtained.
Preferably, before the step of progress signal listens to, obtains space medium state and energy measure；It is described
The optimization method of WIFI equipment anti-interference ability is further comprising the steps of:
Signal is carried out based on PLCP layers of fixed leader sequence to listen to, and obtains the space medium state and PLCP energy of PLCP
Measured value；
When PLCP spatiality is idle, it is normally carried out data transmission, when PLCP spatiality is busy, executes void
Quasi- carrier wave detects avoidance mechanism, and whether detection data sends success；
When being more than that predetermined time data continues not sent success, executes the WIFI equipment progress signal and listen to, obtain
The step of space medium state and energy measure.
Preferably, when the target data is not sent successful within a preset time, reduce the preset threshold, and return to institute
It states and carries out the step of signal listens to, obtains space medium state and energy measure, specifically include:
The MAC layer packet for counting WIFI in preset time period sends state, obtains error code packet variation tendency and retransmits packet variation
Trend；
When the target data is not sent successful within a preset time, and the error code packet variation tendency and re-transmission packet variation
When trend is growth trend, reduce preset threshold, and return to the WIFI equipment progress signal and listen to, obtains space medium state
And the step of energy measure；
When data are sent successfully, and the error code packet variation tendency and re-transmission packet variation tendency are growth trend, increase
Preset threshold.
Preferably, when PLCP spatiality is idle, it is normally carried out data transmission, when PLCP spatiality is busy
When, the step of virtual carrier detects avoidance mechanism is executed, is specifically included:
When PLCP spatiality is idle, it is normally carried out data transmission, when PLCP spatiality is busy, is compared
The size of PLCP energy measure and PLCP preset threshold；
When PLCP energy measure is not less than PLCP preset threshold, determine that interference signal is co-channel interference, executes virtual
Carrier wave detects avoidance mechanism；
When PLCP energy measure is less than PLCP preset threshold, determine that interference signal has co-channel interference and adjacent frequency letter simultaneously
Number or out of band signal interference, execute virtual carrier and detect avoidance mechanism, and whether detection data sends success.
Preferably, when PLCP energy measure is not less than PLCP preset threshold, interference signal is co-channel interference, executes void
After the step of quasi- carrier wave detection avoidance mechanism, the anti-interference method of the WIFI equipment further include:
The MAC layer packet for counting WIFI in preset time period sends state, obtains error code packet variation tendency, retransmits to wrap to change and
Gesture；
When data are sent successfully, and the error code packet variation tendency and re-transmission packet variation tendency are downward trend, increase
PLCP preset threshold.
Preferably, the MAC layer packet for counting WIFI in preset time period sends state, obtains error code packet variation tendency, retransmits
After packet variation tendency, the anti-interference method of the WIFI equipment further include:
When data send failure, and the error code packet variation tendency and re-transmission packet variation tendency are growth trend, reduce
PLCP preset threshold, and return is described when PLCP spatiality is idle, data transmission is normally carried out, when PLCP spatiality
When being busy, the step of comparing the size of PLCP energy measure and PLCP preset threshold.
It will be appreciated that the anti-interference program of the WIFI equipment stored on above-mentioned storage medium can be used for realizing above-mentioned WIFI
Each step in the anti-interference method of equipment, details are not described herein again.
In addition, being based on Fig. 6, the present invention also proposes a kind of WIFI equipment jamproof system, the anti-interference system of WIFI equipment
System includes:
Energy detection unit 10 is listened to for carrying out signal, obtains space medium state and energy measure；
It should be noted that space medium state only have it is busy and two kinds idle, when space medium state is idle, number
According to can normally send, without executing Anti-interference Strategy, when space medium state is busy, it is dry to illustrate that current radio environment exists
Situation is disturbed, normal data is sent there are some problems, and energy measure can react the annoyance level of current spatial, energy measurement
Value is bigger, interferes bigger.
Energy comparison unit 20, for the energy measure and presetting when the space medium state is busy
Threshold value is compared；
It is worth noting that space medium state is all busy, however works as space in the case where simply by the presence of certain interference
When medium is that busy but energy measure is smaller, data still can be successfully transmitted, preset threshold herein is then laboratory
Using the product with model under environment, energy measure when data can not be just issued.
Anti-interference unit 30, for when the energy measure is less than preset threshold, determining that current interference signal is small
It is interfered in the adjacent frequency signal interference or out of band signal of threshold value, target data is carried out to repeat transmission, and verify the target data
Whether transmission is successful；When the target data is not sent successful within a preset time, reduce the preset threshold, and described in return
Carry out the step of signal listens to, obtains space medium state and energy measure.
It can be readily appreciated that data can be sent by laboratory test when energy measure is less than preset value,
So at this time sending data by way of repeating to send, to resist the interference of environment, and verify whether to send successfully.
It should be noted that there are certain difference for actual environment comparative experiments room environmental, so ought actually number of targets
When according to that can not send successfully, which does not meet actual conditions, and setting is bigger than normal, so reducing preset threshold at this time, lays equal stress on
It is newly listened to and data is sent；There may be actual working environment is not met, this is walked for single fixed threshold setting
Suddenly in such a way that dynamic adjusts threshold value, so that threshold value is more in line with actual working condition to realize the anti-dry of WIFI equipment
It disturbs.
The other embodiments or specific implementation of WIFI equipment jamproof system of the present invention can refer to above-mentioned each side
Method embodiment, details are not described herein again.
The present embodiment by be arranged threshold value data transmission state is counted after WIFI connection, to surrounding interfere into
Row detecting, and according to the data such as the variation tendency of the data transmission state counted and the WIFI disturbed condition detected, it is right
Threshold value is dynamically adjusted, and implements different Anti jamming Schemes for the disturbance situation that threshold value defines, to improve WIFI
Data transmission bauds and WIFI connective stability of the equipment in disturbance environment；Technical solution of the present invention can improve existing
Connection disconnection, packet loss and serious the problem of retransmitting that WIFI equipment occurs in interference environment, reaches in interference environment, reduced
WIFI packet loss improves the serious technical effect retransmitted and improve connective stability.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the system that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or system institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or system.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.Word first, second, with
And the use of third etc. does not indicate any sequence, these words can be construed to title.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be come by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases the former
It is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially makes tribute to the prior art in other words
The part offered can be embodied in the form of software products, which is stored in a storage medium (such as
ROM/RAM, magnetic disk, CD) in, including some instructions to make a terminal device (can be mobile phone, computer, server,
Air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of anti-interference method of WIFI equipment, which is characterized in that the anti-interference method of the WIFI equipment includes following step
It is rapid:
It carries out signal to listen to, obtains space medium state and energy measure；
When the space medium state is busy, the energy measure is compared with preset threshold；
When the energy measure be less than preset threshold when, determine current interference signal be less than threshold value adjacent frequency signal interference or
Out of band signal interference carries out target data to repeat transmission, and verifies whether the target data sends success；
When the target data is not sent successful within a preset time, reduce the preset threshold, and return to the carry out signal
The step of listening to, obtaining space medium state and energy measure.
2. the anti-interference method of WIFI equipment as described in claim 1, which is characterized in that when the space medium state is busy
When commonplace, after being compared to the energy measure with preset threshold, the optimization method of the WIFI equipment anti-interference ability
It is further comprising the steps of:
When the energy measure is more than or equal to preset threshold, determine that current interference signal is the adjacent frequency signal not less than threshold value
Interference or out of band signal interference, pause sends target data, and is periodically detected energy measure；
When preset time self-energy measured value is all larger than preset threshold, increase the preset threshold, and returns and described carry out letter
The step of number listening to, obtain space medium state and energy measure.
3. the anti-interference method of WIFI equipment as claimed in claim 2, which is characterized in that the progress signal is listened to, and is obtained
Before the step of space medium state and energy measure；The optimization method of the WIFI equipment anti-interference ability further includes following
Step:
Signal is carried out based on PLCP layers of fixed leader sequence to listen to, and obtains the space medium state and PLCP energy measurement of PLCP
Value；
When PLCP spatiality is idle, it is normally carried out data transmission, when PLCP spatiality is busy, executes virtual carry
Wave detects avoidance mechanism, and whether detection data sends success；
When being more than that predetermined time data continues not sent success, executes the WIFI equipment progress signal and listen to, obtain space
The step of medium state and energy measure.
4. the anti-interference method of WIFI equipment as claimed in claim 3, which is characterized in that the number of targets within a preset time
When according to not sent success, reduces the preset threshold, and return to the progress signal and listen to, obtain space medium state and energy
The step of measured value, specifically includes:
The MAC layer packet for counting WIFI in preset time period sends state, obtains error code packet variation tendency and retransmits packet variation tendency；
When the target data is not sent successful within a preset time, and the error code packet variation tendency and re-transmission packet variation tendency
When for growth trend, reduce preset threshold, and return to the WIFI equipment and carry out signal and listen to, obtains space medium state and energy
The step of measurement；
When data are sent successfully, and the error code packet variation tendency and re-transmission packet variation tendency are growth trend, increase default
Threshold value.
5. the anti-interference method of WIFI equipment as claimed in claim 3, which is characterized in that when PLCP spatiality is the free time
When, it is normally carried out data transmission, when PLCP spatiality is busy, executes the step of virtual carrier detects avoidance mechanism, tool
Body includes:
When PLCP spatiality is idle, it is normally carried out data transmission, when PLCP spatiality is busy, compares PLCP energy
The size of measurement and PLCP preset threshold；
When PLCP energy measure is not less than PLCP preset threshold, determines that interference signal is co-channel interference, execute virtual carrier
Detect avoidance mechanism；
When PLCP energy measure be less than PLCP preset threshold when, determine interference signal simultaneously have co-channel interference and adjacent frequency signal or
Out of band signal interference executes virtual carrier and detects avoidance mechanism, and whether detection data sends success.
6. the anti-interference method of WIFI equipment as claimed in claim 5, which is characterized in that when PLCP energy measure is not less than
After the step of when PLCP preset threshold, interference signal is co-channel interference, executes virtual carrier detection avoidance mechanism, the WIFI
The anti-interference method of equipment further include:
The MAC layer packet for counting WIFI in preset time period sends state, obtains error code packet variation tendency, retransmits packet variation tendency；
When data are sent successfully, and the error code packet variation tendency and re-transmission packet variation tendency are downward trend, PLCP is increased
Preset threshold.
7. the anti-interference method of WIFI equipment as claimed in claim 6, which is characterized in that WIFI in statistics preset time period
MAC layer packet sends state, after obtaining error code packet variation tendency, retransmitting packet variation tendency, the anti-interference side of the WIFI equipment
Method further include:
When data send failure, and the error code packet variation tendency and re-transmission packet variation tendency are growth trend, reduce PLCP
Preset threshold, and return is described when PLCP spatiality is idle, data transmission is normally carried out, when PLCP spatiality is busy
When commonplace, execute virtual carrier and detect avoidance mechanism, and whether detection data sends successful step.
8. a kind of jamproof system of WIFI equipment, which is characterized in that the jamproof system includes:
Energy detection unit is listened to for carrying out signal, obtains space medium state and energy measure；
Energy comparison unit, for when the space medium state is busy, to the energy measure and preset threshold into
Row compares；
Anti-interference unit, for when the energy measure is less than preset threshold, determining that current interference signal is less than threshold value
Adjacent frequency signal interference or out of band signal interference, target data is carried out to repeat transmission, and verifies whether the target data is sent out
Send success；Within a preset time when the not sent success of the target data, reduce the preset threshold, and return and described carry out letter
The step of number listening to, obtain space medium state and energy measure.
9. a kind of user equipment, which is characterized in that the user equipment includes: memory, processor and is stored in the storage
The anti-interference program of WIFI equipment can be run on device and on the processor, the anti-interference program of the WIFI equipment is described
The step of anti-interference method of the WIFI equipment as described in any one of claims 1 to 7 is realized when processor executes.
10. a kind of storage medium, which is characterized in that the anti-interference program of WIFI equipment is stored on the storage medium, it is described
Using the WIFI equipment as described in any one of claims 1 to 7 when the anti-interference program of WIFI equipment is executed by processor
The step of anti-interference method.
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