CN106452532B - A kind of antenna selecting method, device and a kind of radio reception device - Google Patents
A kind of antenna selecting method, device and a kind of radio reception device Download PDFInfo
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- CN106452532B CN106452532B CN201610992123.7A CN201610992123A CN106452532B CN 106452532 B CN106452532 B CN 106452532B CN 201610992123 A CN201610992123 A CN 201610992123A CN 106452532 B CN106452532 B CN 106452532B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0602—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
- H04B7/0608—Antenna selection according to transmission parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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Abstract
The embodiment of the invention discloses a kind of antenna selecting method, device and a kind of radio reception devices, for solving the problems, such as that existing day line options are easy to influence the selection result of antenna combination because of the emission rate variation that current antenna combines.The method comprise the steps that obtaining training emission rate；It is combined using each target antenna of training emission rate poll, and calculates separately the first packet loss of each target antenna combination in polling procedure；Judge whether each first packet loss meets packet loss condition, if so, determining that the training emission rate is antenna emission rate, if it is not, then increasing trained emission rate and returning to continuation poll；It is combined using each target antenna of antenna emission rate poll, and calculates separately the second packet loss of each target antenna combination in polling procedure；The combination of each target antenna is screened according to each second packet loss, the target antenna combination for meeting default screening conditions is then determined as the antenna combination for being used to communicate.
Description
Technical field
The present invention relates to fields of communication technology more particularly to a kind of antenna selecting method, device and a kind of wireless access to set
It is standby.
Background technique
With the continuous promotion of data transmission rates demands, MIMO (multi input is widely used in WIFI product at present
Multi output) multi-antenna technology to be to improve throughput.Since wireless aps (WirelessAccessPoint) are provided with mutiple antennas,
And the channel circumstance of antenna is affected by a variety of environmental factors, therefore in order to guarantee the communication matter between AP and communication terminal
Amount, how the best antenna of dynamic select communication quality is most important.
Currently, smart antenna selection algorithm generally uses packet loss as judgement according to the poll for carrying out antenna, in packet loss
In the case that rate is met certain condition, the more preferred antenna combination of wherein emission rate and packet loss is selected.
However, due to the complexity of wireless channel, the emission rate of antenna combination be easy the variation with channel circumstance and
Variation counts the packet loss of each antenna combination on the basis of the emission rate of variation, holds if rate selection and antennae polling interweave
Easily because current antenna combination emission rate variation and influence antenna combination screening as a result, reducing the steady of day line options
Qualitative and accuracy.
Summary of the invention
The embodiment of the invention provides a kind of antenna selecting method, device and a kind of radio reception device, can be avoided because
The emission rate of current antenna combination changes and influences the screening of antenna combination, improves the stability and accuracy of day line options.
A kind of antenna selecting method provided in an embodiment of the present invention, comprising:
The initial transmissions rate for being used for antennae polling is obtained, and determines that the initial transmissions rate is training emission rate；
Using each target antenna combination of training emission rate poll, and each mesh is calculated separately in polling procedure
Mark the first packet loss of antenna combination；
Judge whether each first packet loss being calculated meets preset packet loss condition；
If each first packet loss is unsatisfactory for preset packet loss condition, increase the training according to preset increments
Emission rate, and return to the step of executing the target antenna combination each using training emission rate poll；
If each first packet loss meets preset packet loss condition, it is determined that the trained emission rate is antenna
Emission rate；
Using each target antenna combination of the antenna emission rate poll, and each institute is calculated separately in polling procedure
State the second packet loss of target antenna combination；
Each target antenna combination is screened according to each second packet loss being calculated, is expired
The target antenna combination of the default screening conditions of foot；
The target antenna combination for meeting default screening conditions is determined as the antenna combination for being used to communicate.
Optionally, the target antenna combination for meeting default screening conditions is determined as the antenna combination for being used to communicate to have
Body includes:
Using each alternative antenna combination of the antenna emission rate poll, and each institute is calculated separately in polling procedure
The third packet loss of alternative antenna combination is stated, the alternative antenna group is combined into the target antenna group for meeting default screening conditions
It closes；
Judge variation of the third packet loss of each alternative antenna combination relative to corresponding second packet loss
Whether amount is less than preset threshold value, if so, the smallest alternative antenna combination of third packet loss is determined as being used to communicate
Antenna combination.
Optionally, if the third packet loss of each alternative antenna combination is relative to corresponding second packet loss
Variable quantity is not less than preset threshold value, then it is described using the antenna emission rate poll that execution is returned after predeterminable event triggering
The step of each target antenna combines.
Optionally, the antenna selecting method further include:
During target antenna combination each using the antenna emission rate poll, second packet loss is surpassed
The target antenna combination for crossing preset packet loss threshold value is rejected from each target antenna combination.
Optionally, it combines in the target antenna by second packet loss more than preset packet loss threshold value from each mesh
It marks after being rejected in antenna combination, further includes:
Whether the antenna combination quantity for detecting each target antenna combination is less than default number of combinations, if so, returning
Receipt row obtains the initial transmissions rate for being used for antennae polling, and determines that the initial transmissions rate is the step of training emission rate
Suddenly.
Optionally, it is combined using each target antenna of the antenna emission rate poll, and is counted respectively in polling procedure
The second packet loss for calculating each target antenna combination specifically includes:
Each target antenna is combined using the antenna emission rate and carries out n times poll, and in polling procedure each time
In calculate separately the second packet loss of each target antenna combination, N is greater than or equal to 2；
Each second packet loss that the basis is calculated screens each target antenna combination, obtains
It is specifically included to the target antenna combination for meeting default screening conditions:
After poll each time, according to each second packet loss being calculated to each target antenna group
Conjunction is ranked up, and obtains the ranking results for working as time poll of each target antenna combination；
It is respectively that corresponding target antenna combination carries out assignment according to the ranking results for working as time poll, obtains described each
The ranking value for working as time poll of a target antenna combination；
After n times poll, the ranking value of each secondary poll for each target antenna combination that adds up respectively is obtained described
The cumulative ranking value of each target antenna combination；
Each target antenna combination is screened according to the cumulative ranking value, obtains meeting default screening conditions
Target antenna combination.
Optionally, described using each target antenna combination of training emission rate poll, and counted respectively in polling procedure
Calculate the first packet loss of each target antenna combination specifically:
Using each target antenna combination of training emission rate poll, and using the first calculation window point in polling procedure
The first packet loss of each target antenna combination is not calculated；
It is described to be combined using each target antenna of the antenna emission rate poll, and calculated separately respectively in polling procedure
Second packet loss of a target antenna combination specifically:
Using each target antenna combination of the antenna emission rate poll, and window is calculated using second in polling procedure
Mouth calculates separately the second packet loss of each target antenna combination；
Second calculation window is longer than first calculation window.
A kind of antenna selection apparatus provided in an embodiment of the present invention, comprising:
Emission rate obtains module, originates for obtaining the initial transmissions rate for being used for antennae polling, and at the beginning of determination is described
Firing rate rate is training emission rate；
First antenna poller module for being combined using the trained each target antenna of emission rate poll, and is being taken turns
The first packet loss of each target antenna combination is calculated separately during asking；
Packet loss judgment module, for judging each first packet loss that the first antenna poller module is calculated
Whether rate meets preset packet loss condition；
Emission rate increase module, if the judging result for the packet loss judgment module be it is no, according to default increasing
Amount increases the trained emission rate, and triggers the first antenna poller module；
Antenna emission rate determining module, if the judging result for the packet loss judgment module is yes, it is determined that institute
Stating trained emission rate is antenna emission rate；
Second antennae polling module for being combined using each target antenna of the antenna emission rate poll, and is being taken turns
The second packet loss of each target antenna combination is calculated separately during asking；
Antenna combination screening module, each described second for being calculated according to the second antennae polling module loses
Packet rate screens each target antenna combination, obtains the target antenna combination for meeting default screening conditions；
Antenna combination determining module, the target antenna for screening the antenna combination screening module, which combines, to be determined
For the antenna combination for communication.
Optionally, the antenna combination determining module specifically includes:
Alternative antenna poll units for being combined using each alternative antenna of the antenna emission rate poll, and are being taken turns
The third packet loss of each alternative antenna combination is calculated separately during asking, the alternative antenna group is combined into the antenna sets
Close the target antenna combination that screening module is screened；
Packet loss fluctuates judging unit, each described alternative for judge that the alternative antenna poll units are calculated
Whether the third packet loss of antenna combination is less than preset threshold value relative to the variable quantity of corresponding second packet loss；
Communication antenna determination unit, if for the packet loss fluctuation judging unit judging result be it is yes, by third
The smallest alternative antenna combination of packet loss is determined as the antenna combination for communication；
Trigger unit, if for the packet loss fluctuation judging unit judging result be it is no, predeterminable event triggering
After trigger the second antennae polling module.
Optionally, the antenna selection apparatus further include:
Antenna combination rejects module, in the process using each target antenna combination of the antenna emission rate poll
In, the target antenna combination that second packet loss is more than preset packet loss threshold value is picked from each target antenna combination
It removes；
Number of combinations detection module, it is pre- whether the antenna combination quantity for detecting each target antenna combination is less than
If number of combinations；
Testing result processing module, if the testing result for the number of combinations detection module be it is yes, triggering described in
Emission rate obtains module.
Optionally, the second antennae polling module specifically includes:
Antennae polling unit carries out n times poll for combining using the antenna emission rate to each target antenna, and
The second packet loss of each target antenna combination is calculated separately in polling procedure each time, N is greater than or equal to 2；
The antenna combination screening module specifically includes:
Antenna combination sequencing unit is used for after poll each time, according to each second packet loss being calculated
Rate is ranked up each target antenna combination, obtains the sequence knot for working as time poll of each target antenna combination
Fruit；
Sort assignment unit, for according to it is described when the ranking results of time poll be respectively corresponding target antenna combine into
Row assignment obtains the ranking value for working as time poll of each target antenna combination；
Ranking value summing elements, each next round for each target antenna combination that after n times poll, adds up respectively
The ranking value of inquiry obtains the cumulative ranking value of each target antenna combination；
Antenna screening unit is obtained for being screened according to the cumulative ranking value to each target antenna combination
To the target antenna combination for meeting default screening conditions.
A kind of radio reception device provided in an embodiment of the present invention, including above-mentioned antenna selection apparatus.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that
In the embodiment of the present invention, firstly, obtaining the initial transmissions rate for being used for antennae polling, and the initial transmissions are determined
Rate is training emission rate；Using each target antenna combination of training emission rate poll, and counted respectively in polling procedure
Calculate the first packet loss of each target antenna combination；Then, whether judge each first packet loss being calculated
Meet preset packet loss condition；If each first packet loss is unsatisfactory for preset packet loss condition, according to default increasing
Amount increases the trained emission rate, and returns and execute the step using each target antenna combination of training emission rate poll
Suddenly；If each first packet loss meets preset packet loss condition, it is determined that the trained emission rate is antenna transmitting
Rate；After determining antenna emission rate, combined using each target antenna of the antenna emission rate poll, and taking turns
The second packet loss of each target antenna combination is calculated separately during asking；It is lost according to be calculated each described second
Packet rate screens each target antenna combination, obtains the target antenna combination for meeting default screening conditions；Finally, will
The target antenna combination for meeting default screening conditions is determined as the antenna combination for communication.As it can be seen that the embodiment of the present invention
In, the antennae polling of rate selection and screening antenna combination separates, and avoids because the emission rate of current antenna combination becomes
Change and influence the screening of antenna combination, and while packet loss meets preset condition, it is as big as possible to filter out emission rate
Target antenna combination as communicate antenna combination, improve the stability and accuracy of day line options.
Detailed description of the invention
Fig. 1 is a kind of antenna selecting method one embodiment flow chart in the embodiment of the present invention；
Processing flow schematic diagram of the Fig. 2 for antenna selecting method a kind of in the embodiment of the present invention under an application scenarios；
Fig. 3 is a kind of antenna selection apparatus one embodiment structure chart in the embodiment of the present invention.
Specific embodiment
The embodiment of the invention provides a kind of antenna selecting method, device and a kind of radio reception devices, existing for solving
There are day line options to be easy the problem of influencing the selection result of antenna combination because of the emission rate variation that current antenna combines.
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that disclosed below
Embodiment be only a part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field
Those of ordinary skill's all other embodiment obtained without making creative work, belongs to protection of the present invention
Range.
Referring to Fig. 1, a kind of antenna selecting method one embodiment includes: in the embodiment of the present invention
101, the initial transmissions rate for being used for antennae polling is obtained, and determines that the initial transmissions rate is training transmitting speed
Rate；
In the present embodiment, it is possible, firstly, to obtain the initial transmissions rate for antennae polling, and the initial transmissions are determined
Rate is training emission rate.Above-mentioned initial transmissions rate can be preset, normal communication that can also be current according to AP
When emission rate be determined.For example, x can be reduced by one if emission rate when the current normal communication of AP is x
Speed grade is as the training emission rate.It is understood that defining the amount of a speed grade in WIFI agreement.Separately
Outside, x can also be adjusted according to preset rate variable quantity, for example x is reduced into a preset rate variable quantity, obtain the instruction
Practice emission rate.
Preferably, the normal communication of AP is influenced during day line options in order to avoid AP, one of AP can be used
Point bandwidth participates in the operations of day line options, and the bandwidth of another part then carries out normal communication using the antenna combination of default,
So that it is guaranteed that keeping normal communication between AP and communication terminal during AP carries out day line options.
It is understood that in the present embodiment, antenna combination refers to any default combination of several antennas on AP.Than
Such as, it is assumed that have 6 antennas on AP, the antenna partition on AP can be then diversified forms by respectively 1,2,3,4,5, No. 6 antenna
Antenna combination.If an average antenna combination includes 1 antenna, 6 antenna sets can be respectively divided into 1~No. 6 antenna
It closes, can also be 3 antenna combinations by 1~No. 3 antenna partition, remaining 4~No. 6 antennas are set as the antenna combination of default, use
To keep normal communication；Under another form, 1 and No. 2 antenna can be set as to an antenna combination, 3 and No. 4 antennas are set as one
A antenna combination, 5 and No. 6 antennas are set as an antenna combination；Under another form, 1 and No. 2 antenna can be set as a day
Line combination, 3,4 and No. 5 antennas are set as an antenna combination, and remaining No. 6 antennas are set as the antenna combination of default for keeping just
Normal open letter ... as it can be seen that the division of the antenna combination on AP can according to actual use situation depending on, the present embodiment is not to day
The division of line combination carries out exhaustion, should not be assumed that the division of antenna combination in the present embodiment or setting are constituted to limit of the invention
It is fixed.And under some application scenarios, the antenna amount of the transmitting antenna on AP be it is determining, can be according to core when designing antenna
The factors such as piece, cost are configured.After number of transmission antennas determines, the antenna combination for transmitting then can be by research staff
It is default according to actual use situation.
102, it is combined using each target antenna of training emission rate poll, and calculates separately each institute in polling procedure
State the first packet loss of target antenna combination；
After getting the training emission rate, it can be combined using each target antenna of training emission rate poll,
And the first packet loss of each target antenna combination is calculated separately in polling procedure.It is understood that each in poll
When a target antenna combines, which is fixed and invariable, and in the polling procedure of fixed transmission rate respectively
Calculate the first packet loss (PER) of each target antenna combination.
In the present embodiment, AP carries out the transmission of data packet using each antenna combination in turn to be referred to the poll of antenna combination
Test.It is illustrated below, it is assumed that have 3 target antenna combinations on AP, 1, combination 2 and combination 3 are respectively combined, firstly, can
To send test data using combination 1, test data is then sent using combination 2, test data is then sent using combination 3,
So just complete a poll to the combination of 3 target antennas.
It is understood that preferably, can repeatedly be taken turns using training emission rate to the combination of each target antenna
It askes, and calculates separately the first packet loss of each target antenna combination in polling procedure every time, then again to same
The first packet loss that first packet loss of the multiple poll of target antenna combination is averaged as target antenna combination finally,
The influence of packet loss fluctuation can be reduced to a certain extent.
103, whether each first packet loss that judgement is calculated meets preset packet loss condition, if so,
Step 104 is executed, if it is not, thening follow the steps 105；
After the first packet loss that each target antenna combination is calculated, it can be determined that is be calculated is each
Whether first packet loss meets preset packet loss condition, if so, 104 are thened follow the steps, if it is not, thening follow the steps 105.
Preferably, judge whether each first packet loss being calculated meets preset packet loss condition and specifically may be used
With are as follows: judge whether the difference of maxima and minima in each first packet loss being calculated is greater than preset first
Threshold value, if it is not, step 105 is executed it may be considered that current training emission rate can also increase, conversely, it may be considered that
Current training emission rate has caused the packet loss between different antenna combinations larger, if increasing trained emission rate meeting again
Cause packet loss difference to continue to expand, can then execute step 104, current training emission rate is confirmed as antenna transmitting
Rate, for screening the antennae polling of antenna combination.It is understood that in the present embodiment, in order to enable the antenna hair determined
Firing rate rate is more acurrate, and the initial transmissions rate obtained in a step 101 should be smaller or sufficiently small, so that training transmitting speed
Rate, which can be gradually increased and finally reach in the process for executing step 102,103 and 105 repeatedly, meets preset packet loss condition.
It further, can be with if detection finds that each first packet loss is more than preset packet loss maximum value
Current training emission rate is reduced by a preset rate variable quantity or reduces a speed grade, then executes step
104, the training emission rate after deceleration is confirmed as antenna emission rate.For example, setting packet loss maximum value as 80%, work as detection
It was found that each first packet loss more than 80% when, then explanation during being trained the adjustment of emission rate, antenna
Combined packet loss has exceeded acceptable range, then will be current at this time it will be understood that training emission rate is just excessive
Training emission rate reduces by a preset rate variable quantity or reduces a speed grade, so that training transmitting speed after slowing down
Rate is just suitable, so that it is determined that the training emission rate after the deceleration is antenna emission rate.
104, determine that the trained emission rate is antenna emission rate；
If each first packet loss being calculated meets preset packet loss condition, the training can be determined
Emission rate is antenna emission rate.
105, increase the trained emission rate according to preset increments, and return to step 102；
If each first packet loss being calculated is unsatisfactory for preset packet loss condition, can be according to default increasing
Amount increases the trained emission rate, and returns to step 102, again using the training emission rate after increasing to each mesh
Mark antenna combination is polled, and calculates the first packet loss.
106, it is combined using each target antenna of the antenna emission rate poll, and is calculated separately respectively in polling procedure
Second packet loss of a target antenna combination；
After determining the antenna emission rate, each target antenna of antenna emission rate poll can be used
It combines, and calculates separately the second packet loss of each target antenna combination in polling procedure.It is understood that this reality
Apply in example, due to antenna emission rate be it is fixed, will not change in the antenna combination screening process of step 106 to 108, because
For the screening process of antenna combination, antenna emission rate is quantitative, and non-variables for this, changes shadow so as to avoid rate
The case where ringing the selection result of antenna combination.
Further, it during each target antenna combination of the use antenna emission rate poll, can also incite somebody to action
Second packet loss is more than that the target antenna combination of preset packet loss threshold value is rejected from each target antenna combination.It can
With understanding, the target antenna combination of rejecting will be no longer participate in the poll and corresponding subsequent step of antenna combination, avoid
The excessive target antenna combination of packet loss participates in antennae polling repeatedly, greatly reduces in antenna selection procedure and rests on " poor " antenna
The combined time reduces the expense of throughput in antenna selection procedure.Further, each target day can also be detected
Whether the antenna combination quantity of line combination is less than default number of combinations, if so, returning to step 101.It is understood that
It, can be to each target antenna after rejecting every time since " poor " target antenna group credit union is rejected from the combination of each target antenna
Combined number of combinations is detected, if current each target antenna number of combinations is too small, for example number of combinations is 0, then says
Bright signal environment is varied widely in antenna selection procedure, is continued to execute subsequent step at this time and has been lost meaning, therefore
Initial step can be returned and restart a day line options, that is, return to step 101.
Further, above-mentioned steps 102 are specifically as follows: it is combined using each target antenna of training emission rate poll,
And the first packet loss of each target antenna combination is calculated separately using the first calculation window in polling procedure；And it is above-mentioned
Step 106 is then specifically as follows: using each target antenna combination of the antenna emission rate poll, and adopting in polling procedure
The second packet loss of each target antenna combination is calculated separately with the second calculation window；Wherein, second calculation window
It is longer than first calculation window.
It is understood that the second calculation window is " length " window, the first calculation window is " short " window, this is because
It in step 102~105, needs to carry out rate selection by calculating the first packet loss, " short " window is more advantageous to transmitting speed
The screening and judgement of rate；And in step 106~108, then it needs to carry out the sieve of antenna combination by calculating the second packet loss
Choosing, " length " window are more advantageous to the stability for reducing packet loss fluctuation and improving antenna combination screening.Preferably, a certain specific
Under application scenarios, the length of the second calculation window is 10 times of the first calculation window.
107, each target antenna combination is screened according to each second packet loss being calculated, is obtained
To the target antenna combination for meeting default screening conditions；
It, can be according to each second packet loss being calculated after each second packet loss is calculated
Each target antenna combination is screened, the target antenna combination for meeting default screening conditions is obtained.It is understood that
Be, to the screening mode of target antenna combination can there are many, for example the second packet loss can be filtered out lower than some preset value
Target antenna group be combined into the condition of satisfaction target antenna combination, can also be according to the second packet loss from low to high to each target
Antenna combination is ranked up, target antenna combination of several target antennas combination as the default screening conditions of satisfaction before choosing,
Etc..
Further, above-mentioned steps 106 can specifically include: using the antenna emission rate to each target antenna group
It closes and carries out n times poll, and calculate separately the second packet loss of each target antenna combination, N in polling procedure each time
More than or equal to 2.
Above-mentioned steps 107 can specifically include:
A, after poll each time, according to each second packet loss being calculated to each target antenna
Combination is ranked up, and obtains the ranking results for working as time poll of each target antenna combination；
B, it is respectively that corresponding target antenna combination carries out assignment according to the ranking results for working as time poll, obtains described
The ranking value for working as time poll of each target antenna combination；
C, after n times poll, the ranking value of each secondary poll for each target antenna combination that adds up respectively obtains institute
State the cumulative ranking value of each target antenna combination；
D, each target antenna combination is screened according to the cumulative ranking value, obtains meeting default screening item
The target antenna of part combines.
For above-mentioned steps A, target antenna combination can be ranked up from low to high according to the second packet loss, it can also be with
Target antenna combination is ranked up according to the second packet loss corresponding value range.For example, being equipped with combination 1, combination 2,3 and of combination
Combination 4, the second packet loss is respectively 11%, 22%, 30% and 35%, if the value range of packet loss successively include: 0~
10%, 10~20%, 20~30%, 30~40% ... 90~100%, then correspond to the ranking results of target antenna combination such as
Under: combination 1 ranks the first, and combination 2 is number two, and combination 3 and combination 4 are number three side by side.
For above-mentioned steps B, after obtaining ranking results, target antenna combination can be assigned according to ranking results
Value, the size of assignment can from big to small according to ranking results, can also be from small to large.For example, the citing of above-mentioned steps A is accepted,
The assignment of combination 1 to combination 4 can be 1,2,3,3, be also possible to 3,2,1,1.
For above-mentioned steps C, due to the ranking value of the available each target antenna combination of each poll, in n times wheel
After inquiry, it can add up to the ranking value of each secondary poll.Assuming that poll twice altogether, when first time poll, combination 1 to 4
Ranking value is 1,2,3,3.When second of poll, the ranking value of combination 1 to 4 is 1,3,2,4.So, combination 1 to 4 is in two next rounds
Cumulative ranking value after inquiry is 2,5,5,7.
It, can be according to described cumulative after the cumulative ranking value for obtaining each target antenna combination for above-mentioned steps D
Ranking value screens each target antenna combination, obtains the target antenna combination for meeting default screening conditions.It can be with
Understand, which can be set according to the actual situation, for example be set as the cumulative small Mr. Yu's preset value of ranking value
Target antenna combination meet condition, also can be set as carrying out minor sort again according to cumulative ranking value, rank in preceding several names
Target antenna combination be believed to satisfy condition, etc..
It is understood that A, B, C and D are replaced and are lost using cumulative ranking value as screening foundation through the above steps
The absolute figure of packet rate, eliminating the packet loss fluctuation bring in antenna combination screening process influences.
108, the target antenna combination for meeting default screening conditions is determined as the antenna combination for being used to communicate.
After filtering out the target antenna combination for meeting default screening conditions, default screening conditions can be met by described
Target antenna combination be determined as antenna combination for communication.It should be noted that the antenna combination for being used to communicate can be with
For one, it is two or more.
Further, above-mentioned steps 108 can specifically include:
1) it using the antenna emission rate poll each alternative antenna combination, and calculates separately in polling procedure each
The third packet loss of the alternative antenna combination, the alternative antenna group are combined into the target antenna for meeting default screening conditions
Combination；
2) judge change of the third packet loss of each alternative antenna combination relative to corresponding second packet loss
Whether change amount is less than preset threshold value, if so, the smallest alternative antenna combination of third packet loss is determined as being used to lead to
The antenna combination of letter, if it is not, then returning to step 106 after predeterminable event triggering.
For above-mentioned steps 1), it is filtering out each alternative antenna combination and then is using the antenna emission rate wheel
Third packet loss described in each alternative antenna group joint account is ask, it is standby these can be tracked by the calculated result of third packet loss
Antenna combination is selected, to reflect whether current wireless channel environment is stable.
For above-mentioned steps 2), if the third packet loss of each alternative antenna combination is relative to corresponding described second
The variable quantity of packet loss is respectively less than preset threshold value, then shows the fluctuation of packet loss in the reasonable scope, current radio channel ring
Border is relatively stable, so as to determine the antenna combination for communication from the combination of these alternative antennas.Wherein it is preferred to
The smallest alternative antenna combination of third packet loss can be determined as the antenna combination for being used to communicate.And if each described standby
The third packet loss of antenna combination is selected to be not less than preset threshold value relative to the variable quantity of corresponding second packet loss, then table
The fluctuation of bright packet loss exceeds zone of reasonableness, and current radio channel environmental change is very fast, the selection result confidence level of antenna combination
It reduces, needs to re-start a day line options, can be jumped back to after predeterminable event triggering and execute step 106.Under certain application scenarios,
The value for the maximum rate that above-mentioned preset threshold value, i.e. packet loss rationally fluctuate is 0.5.
In the present embodiment, above-mentioned " predeterminable event " triggering can refer to the third for detecting alternative antenna combination twice in succession
Packet loss is not less than preset threshold value relative to the variable quantity of corresponding second packet loss, and specific " predeterminable event " can be with
It is set according to the actual situation, the present embodiment is defined not to this.Further, alternative antenna group is being detected the presence of
The third packet loss of conjunction is not less than preset threshold value relative to the variable quantity of corresponding second packet loss, but not twice in succession
It is preset to detect that the third packet loss of alternative antenna combination is not less than relative to the variable quantity of corresponding second packet loss
In the case where threshold value, above-mentioned steps 1 can be re-executed) and 2), the third until there is each alternative antenna combination is lost
The case where packet rate is respectively less than preset threshold value relative to the variable quantity of corresponding second packet loss, or detect twice in succession
The third packet loss combined to alternative antenna is not less than preset threshold value relative to the variable quantity of corresponding second packet loss.
In the present embodiment, firstly, obtaining the initial transmissions rate for being used for antennae polling, and the initial transmissions rate is determined
For training emission rate；Using each target antenna combination of training emission rate poll, and calculated separately respectively in polling procedure
First packet loss of a target antenna combination；Then, judge whether each first packet loss being calculated meets
Preset packet loss condition；If each first packet loss is unsatisfactory for preset packet loss condition, increase according to preset increments
The big trained emission rate, and return to the step of executing the target antenna combination each using training emission rate poll；
If each first packet loss meets preset packet loss condition, it is determined that the trained emission rate is antenna transmitting speed
Rate；After determining antenna emission rate, combined using each target antenna of the antenna emission rate poll, and in poll
The second packet loss of each target antenna combination is calculated separately in the process；According to each second packet loss being calculated
Rate screens each target antenna combination, obtains the target antenna combination for meeting default screening conditions；Finally, by institute
The target antenna for stating the default screening conditions of satisfaction combines the antenna combination being determined as communication.As it can be seen that in the present embodiment, rate
The antennae polling of selection and screening antenna combination separates, and avoids influencing because of the emission rate variation of current antenna combination
The screening of antenna combination, and while packet loss meets preset condition, filter out emission rate target day as big as possible
Line combination improves the stability and accuracy of day line options as the antenna combination for communication.
Further, packet loss is calculated using the calculation window of different length, accelerates the efficiency of day line options.Due to
When WiFi agreement is defined speed grade, each direct overlapping degree of rate is not high, therefore uses short window can be fine
Confirmation emission rate；And when antenna combination screening, using long window, the accuracy of day line options can be improved.
Further, exited in advance when calculating packet loss and antenna selection procedure in reject the method for poor antenna, can be big
It is big to reduce the time that poor antenna combination is rested in antenna selection procedure, reduce the expense of throughput in antenna selection procedure.
Further, it is used as parameter using ranking value is cumulative, the method for substituting the absolute figure of packet loss can exclude antenna
Packet loss fluctuation bring influences in selection course.
Further, by the way of tracking antenna, the accuracy of day line options can be enhanced, and when due to tracking, time
The antenna combination gone through is substantially optimal or suboptimum alternative antenna combination, and the influence for throughput is also smaller.
For ease of understanding, according to Fig. 1 described embodiment, below with a practical application scene to the embodiment of the present invention
One of antenna selecting method be described:
The process flow signal that Fig. 2 shows antenna selecting methods a kind of in the embodiment of the present invention under an application scenarios
Figure.
Under this application scene, AP is equipped with 4 antenna combinations, wherein combination 1, combination 2 and combination 3 participate in day line options
Each combination, the antenna combination that combination 4 is set as default carry out normal communication.
201, the current emission rate under current normal communication is obtained, which is reduced into a speed grade
Afterwards as training emission rate；
202, using training emission rate to each combination poll, and the of each combination is calculated separately in polling procedure
One packet loss；
203, judge whether the first packet loss of each combination is all larger than 100%, if so, 204 are thened follow the steps, if it is not,
Then follow the steps 205；
204, training emission rate is reduced into a speed grade, then executes step 207；
205, judge whether the difference of maxima and minima in the first packet loss between each combination is greater than 50%, if
It is to then follow the steps 207, if it is not, thening follow the steps 206；
206, training emission rate is increased into a speed grade, then returns to step 202；
207, determine that the trained emission rate is antenna emission rate；
208, each combination is polled using the antenna emission rate, and is calculated separately in polling procedure each time
Second packet loss of each target antenna combination；
It 209, is more than the combination of preset packet loss threshold value from each combination by the second packet loss after poll of every completion
It rejects；It should be noted that it is assumed that each combination includes combination 1, combination 2 and combination 3, if combination 2 in first time poll
Be removed, then next time poll when it is each combination include combination 1 and combination 3.
210, judge whether remaining number of combinations is greater than 0, if so, thening follow the steps 211, execute step if it is not, then returning
Rapid 201；
211, whether poll is completed three times for judgement, if so, 212 are thened follow the steps, if it is not, thening follow the steps 208；
212, each combined accumulation ranking value is calculated according to each the second packet loss for combining poll three times；Assuming that combination
2 are removed, and each combination includes combination 1 and combination 3, and the second packet loss of combination 1 and combination 3 in poll three times is respectively
11% and 33%, 13% and 31%, 12 and 32%.Then to the assignment of 3 poll three times of combination 1 and combination, obtained combination 1 and group
The ranking value for closing 3 polls three times is respectively 1 and 2,1 and 2,1 and 2.It is recognised that the cumulative ranking value of combination 1 is 1+1+1=3,
The cumulative ranking value of combination 3 is 2+2+2=6.
213, each combination is ranked up from small to large according to the ranking value that adds up, preceding 2 groups of selection seniority among brothers and sisters are combined into standby
Choosing combination；
214, it using each alternative combinations of antenna emission rate poll, and calculates separately in polling procedure each standby
Select combined third packet loss；
215, judge whether the third packet loss of each alternative combinations is small relative to the variable quantity of corresponding second packet loss
In 20%, if so, 216 are thened follow the steps, if it is not, then returning to step 208；
216, the smallest alternative combinations of third packet loss are determined as the antenna combination for being used to communicate, day line options finish.
A kind of antenna selecting method is essentially described above, a kind of antenna selection apparatus will be described in detail below.
Fig. 3 shows a kind of antenna selection apparatus one embodiment structure chart in the embodiment of the present invention.
In the present embodiment, a kind of antenna selection apparatus includes:
Emission rate obtains module 301, for obtaining the initial transmissions rate for being used for antennae polling, and determines described initial
Emission rate is training emission rate；
First antenna poller module 302, for being combined using the trained each target antenna of emission rate poll, and
The first packet loss of each target antenna combination is calculated separately in polling procedure；
Packet loss judgment module 303, each described for judging that the first antenna poller module 302 is calculated
Whether one packet loss meets preset packet loss condition；
Emission rate increase module 304, if the judging result for the packet loss judgment module 303 be it is no, according to
Preset increments increase the trained emission rate, and trigger the first antenna poller module；
Antenna emission rate determining module 305, if the judging result for the packet loss judgment module 303 be it is yes,
Determine that the trained emission rate is antenna emission rate；
Second antennae polling module 306, for being combined using each target antenna of the antenna emission rate poll, and
The second packet loss of each target antenna combination is calculated separately in polling procedure；
Antenna combination screening module 307, it is each described for being calculated according to the second antennae polling module 306
Second packet loss screens each target antenna combination, obtains the target antenna combination for meeting default screening conditions；
Antenna combination determining module 308, for the antenna combination screening module 307 to be screened obtained target antenna group
Close the antenna combination being determined as communication.
Further, the antenna combination determining module can specifically include:
Alternative antenna poll units for being combined using each alternative antenna of the antenna emission rate poll, and are being taken turns
The third packet loss of each alternative antenna combination is calculated separately during asking, the alternative antenna group is combined into the antenna sets
Close the target antenna combination that screening module is screened；
Packet loss fluctuates judging unit, each described alternative for judge that the alternative antenna poll units are calculated
Whether the third packet loss of antenna combination is less than preset threshold value relative to the variable quantity of corresponding second packet loss；
Communication antenna determination unit, if for the packet loss fluctuation judging unit judging result be it is yes, by third
The smallest alternative antenna combination of packet loss is determined as the antenna combination for communication；
Trigger unit, if for the packet loss fluctuation judging unit judging result be it is no, predeterminable event triggering
After trigger the second antennae polling module.
Further, the antenna selection apparatus can also include:
Antenna combination rejects module, in the process using each target antenna combination of the antenna emission rate poll
In, the target antenna combination that second packet loss is more than preset packet loss threshold value is picked from each target antenna combination
It removes；
Number of combinations detection module, it is pre- whether the antenna combination quantity for detecting each target antenna combination is less than
If number of combinations；
Testing result processing module, if the testing result for the number of combinations detection module be it is yes, triggering described in
Emission rate obtains module.
Further, the second antennae polling module can specifically include:
Antennae polling unit carries out n times poll for combining using the antenna emission rate to each target antenna, and
The second packet loss of each target antenna combination is calculated separately in polling procedure each time, N is greater than or equal to 2；
The antenna combination screening module specifically includes:
Antenna combination sequencing unit is used for after poll each time, according to each second packet loss being calculated
Rate is ranked up each target antenna combination, obtains the sequence knot for working as time poll of each target antenna combination
Fruit；
Sort assignment unit, for according to it is described when the ranking results of time poll be respectively corresponding target antenna combine into
Row assignment obtains the ranking value for working as time poll of each target antenna combination；
Ranking value summing elements, each next round for each target antenna combination that after n times poll, adds up respectively
The ranking value of inquiry obtains the cumulative ranking value of each target antenna combination；
Antenna screening unit is obtained for being screened according to the cumulative ranking value to each target antenna combination
To the target antenna combination for meeting default screening conditions.
A kind of radio reception device is also disclosed in the embodiment of the present invention, which, which includes that Fig. 3 is corresponding, implements
Any one antenna selection apparatus described in example.Under a concrete application scene, the radio reception device can be road
By device, AP or other wireless telecom equipments.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention
Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (12)
1. a kind of antenna selecting method characterized by comprising
The initial transmissions rate for being used for antennae polling is obtained, and determines that the initial transmissions rate is training emission rate；
Using each target antenna combination of training emission rate poll, and each target day is calculated separately in polling procedure
First packet loss of line combination；
Judge whether each first packet loss being calculated meets preset packet loss condition；
If each first packet loss is unsatisfactory for preset packet loss condition, increases the training according to preset increments and emit
Rate, and return to the step of executing the target antenna combination each using training emission rate poll；
If each first packet loss meets preset packet loss condition, it is determined that the trained emission rate is antenna transmitting
Rate；
Using each target antenna combination of the antenna emission rate poll, and each mesh is calculated separately in polling procedure
Mark the second packet loss of antenna combination；
Each target antenna combination is screened according to each second packet loss being calculated, obtains meeting pre-
If the target antenna of screening conditions combines；
The target antenna combination for meeting default screening conditions is determined as the antenna combination for being used to communicate.
2. antenna selecting method according to claim 1, which is characterized in that by the target for meeting default screening conditions
Antenna combination is determined as specifically including for the antenna combination of communication:
Using the antenna emission rate poll each alternative antenna combination, and calculate separately in polling procedure each described standby
The third packet loss of antenna combination is selected, the alternative antenna group is combined into the target antenna combination for meeting default screening conditions；
Judge the third packet loss of each alternative antenna combination is relative to the variable quantity of corresponding second packet loss
It is no to be less than preset threshold value, if so, the smallest alternative antenna combination of third packet loss is determined as the day for being used to communicate
Line combination.
3. antenna selecting method according to claim 2, which is characterized in that if the third of each alternative antenna combination
Packet loss is not less than preset threshold value relative to the variable quantity of corresponding second packet loss, then returns after predeterminable event triggering
Described in receipt row the step of target antenna combination each using the antenna emission rate poll.
4. antenna selecting method according to claim 1, which is characterized in that the antenna selecting method further include:
It is more than pre- by second packet loss during target antenna combination each using the antenna emission rate poll
If the target antenna combination of packet loss threshold value rejected from each target antenna combination.
5. antenna selecting method according to claim 4, which is characterized in that be more than preset by second packet loss
The target antenna combination of packet loss threshold value in each target antenna combination after rejecting, further includes:
Whether the antenna combination quantity for detecting each target antenna combination is less than default number of combinations, holds if so, returning
Row obtains the initial transmissions rate for being used for antennae polling, and determines the step of initial transmissions rate is training emission rate.
6. antenna selecting method according to claim 1, which is characterized in that each using the antenna emission rate poll
Target antenna combination, and calculate separately the second packet loss that each target antenna combines in polling procedure and specifically include:
Each target antenna is combined using the antenna emission rate and carries out n times poll, and is divided in polling procedure each time
The second packet loss of each target antenna combination is not calculated, and N is greater than or equal to 2；
Each second packet loss that the basis is calculated screens each target antenna combination, is expired
The target antenna combination of the default screening conditions of foot specifically includes:
After poll each time, according to each second packet loss being calculated to each target antenna combine into
Row sequence obtains the ranking results for working as time poll of each target antenna combination；
It is respectively that corresponding target antenna combination carries out assignment according to the ranking results for working as time poll, obtains each mesh
Mark the ranking value for working as time poll of antenna combination；
After n times poll, the ranking value of each secondary poll for each target antenna combination that adds up respectively is obtained described each
The cumulative ranking value of target antenna combination；
Each target antenna combination is screened according to the cumulative ranking value, obtains the mesh for meeting default screening conditions
Mark antenna combination.
7. antenna selecting method according to any one of claim 1 to 6, which is characterized in that described using training transmitting
The each target antenna of rate poll combines, and the first packet loss of each target antenna combination is calculated separately in polling procedure
Rate specifically:
Using each target antenna combination of training emission rate poll, and counted respectively in polling procedure using the first calculation window
Calculate the first packet loss of each target antenna combination；
It is described to be combined using each target antenna of the antenna emission rate poll, and each institute is calculated separately in polling procedure
State the second packet loss of target antenna combination specifically:
Using each target antenna combination of the antenna emission rate poll, and using the second calculation window point in polling procedure
The second packet loss of each target antenna combination is not calculated；
Second calculation window is longer than first calculation window.
8. a kind of antenna selection apparatus characterized by comprising
Emission rate obtains module, for obtaining the initial transmissions rate for being used for antennae polling, and determines the initial transmissions speed
Rate is training emission rate；
First antenna poller module, for being combined using the trained each target antenna of emission rate poll, and in poll mistake
The first packet loss of each target antenna combination is calculated separately in journey；
Packet loss judgment module, for judging that each first packet loss that the first antenna poller module is calculated is
It is no to meet preset packet loss condition；
Emission rate increase module, if the judging result for the packet loss judgment module be it is no, increase according to preset increments
The big trained emission rate, and trigger the first antenna poller module；
Antenna emission rate determining module, if the judging result for the packet loss judgment module is yes, it is determined that the instruction
Practicing emission rate is antenna emission rate；
Second antennae polling module, for being combined using each target antenna of the antenna emission rate poll, and in poll mistake
The second packet loss of each target antenna combination is calculated separately in journey；
Antenna combination screening module, each second packet loss for being calculated according to the second antennae polling module
Each target antenna combination is screened, the target antenna combination for meeting default screening conditions is obtained；
Antenna combination determining module, the target antenna combination for screening the antenna combination screening module are determined as using
In the antenna combination of communication.
9. antenna selection apparatus according to claim 8, which is characterized in that the antenna combination determining module is specifically wrapped
It includes:
Alternative antenna poll units, for being combined using each alternative antenna of the antenna emission rate poll, and in poll mistake
The third packet loss of each alternative antenna combination is calculated separately in journey, the alternative antenna group is combined into the antenna combination sieve
The target antenna combination that modeling block screens；
Packet loss fluctuates judging unit, each alternative antenna being calculated for judging the alternative antenna poll units
Whether combined third packet loss is less than preset threshold value relative to the variable quantity of corresponding second packet loss；
Communication antenna determination unit, if for the packet loss fluctuation judging unit judging result be it is yes, by third packet loss
The smallest alternative antenna combination of rate is determined as the antenna combination for communication；
Trigger unit, if for the packet loss fluctuation judging unit judging result be it is no, predeterminable event trigger after touch
Send out the second antennae polling module described.
10. antenna selection apparatus according to claim 8, which is characterized in that the antenna selection apparatus further include:
Antenna combination rejects module, is used for during target antenna combination each using the antenna emission rate poll,
The target antenna combination that second packet loss is more than preset packet loss threshold value is rejected from each target antenna combination；
Number of combinations detection module, for detecting the antenna combination quantity of each target antenna combination after rejecting operation
Whether default number of combinations is less than；
Testing result processing module, if the testing result for the number of combinations detection module be it is yes, trigger the transmitting
Rate obtains module.
11. antenna selection apparatus according to claim 8, which is characterized in that the second antennae polling module is specifically wrapped
It includes:
Antennae polling unit carries out n times poll for combining using the antenna emission rate to each target antenna, and every
The second packet loss of each target antenna combination is calculated separately in polling procedure, N is greater than or equal to 2；
The antenna combination screening module specifically includes:
Antenna combination sequencing unit is used for after poll each time, according to each second packet loss pair being calculated
Each target antenna combination is ranked up, and obtains the ranking results for working as time poll of each target antenna combination；
Sort assignment unit, for being respectively that corresponding target antenna combination is assigned according to the ranking results for working as time poll
Value obtains the ranking value for working as time poll of each target antenna combination；
Ranking value summing elements are used for after n times poll, and add up each secondary poll of each target antenna combination respectively
Ranking value obtains the cumulative ranking value of each target antenna combination；
Antenna screening unit is expired for being screened according to the cumulative ranking value to each target antenna combination
The target antenna combination of the default screening conditions of foot.
12. a kind of radio reception device, which is characterized in that including the day line options as described in any one of claim 8 to 11
Device.
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| CN101895325A (en) * | 2010-07-30 | 2010-11-24 | 杭州华三通信技术有限公司 | Method and device for transmitting data |
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