CN102781087A - Method and device for adjusting transmission power and access device - Google Patents
Method and device for adjusting transmission power and access device Download PDFInfo
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- CN102781087A CN102781087A CN2012102701295A CN201210270129A CN102781087A CN 102781087 A CN102781087 A CN 102781087A CN 2012102701295 A CN2012102701295 A CN 2012102701295A CN 201210270129 A CN201210270129 A CN 201210270129A CN 102781087 A CN102781087 A CN 102781087A
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Abstract
The invention provides a method and a device for adjusting transmission power and an access device. The method includes: selecting transmission power corresponding to a power level in a power level range corresponding to a terminal as current transmission power, and calculating packet loss rate corresponding to transmission speed under the current transmission power; calculating evaluation value of the current transmission power according to the packet loss rate corresponding to the transmission speed; and adjusting the current transmission power according to the evaluation value of the current transmission power. The invention further provides the device for adjusting the transmission power and the access device. Optimum transmission power for a terminal can be selected, large same-frequency/adjacent-frequency interference caused by overlarge transmission power is avoided, or a phenomenon that the terminal can not receive normally due to the fact that the transmission power is too small is avoided.
Description
Technical field
The present invention relates to the communication technology, relate in particular to a kind of transmission power adjustment method, device and access device.
Background technology
Along with the development of broadband wireless access, WLAN (Wireless Local Area Network; Hereinafter to be referred as: the breadth and depth of WLAN) using has been brought up to unprecedented degree.Wherein the WLAN based on IEEE802.11b is operated in the 2.4GHz frequency range, and the frequency range of this frequency range is 2.4GHz ~ 2.4835GHz, has 13 channels, yet wherein non-interfering channel has only 1,6,11 these three channels.WLAN must expose the channel resource conflict under intensive deployed environment such as university's network like this, causes the problem of wlan network throughput decline with frequency/neighbour's frequency serious interference.Farthest reduce access point (Access Point among the WLAN; Hereinafter to be referred as: AP) radio-frequency emission power is the method that a kind of effective reduction is disturbed with frequency/neighbour frequently.If yet the AP radio-frequency emission power is too low, possibly cause work station (Station again; Hereinafter to be referred as: the signal that STA) receives too a little less than, cause AP to retransmit packet loss and increase, make the wlan network throughput descend.
Usually only based on the signal strength signal intensity adjustment AP radio-frequency emission power of STA, promptly the signal strength signal intensity of STA is big more in the prior art, and the AP radio-frequency emission power of selection is more little, and the signal strength signal intensity of STA is more little, and the AP radio-frequency emission power of selection is big more; This method can reach the purpose that reduces the AP radio-frequency emission power, disturbs frequently thereby reduce with frequency/neighbour.
Yet; When the STA close together but uses less transmitting power when AP sends message; Adopt method of the prior art can select too high AP radio-frequency emission power, more but use big transmitting power when AP sends message, adopt said method can select low AP radio-frequency emission power when the STA distance; Frequently disturb thereby produce bigger same frequency/neighbour, or cause STA normally to receive.
Summary of the invention
The present invention provides a kind of transmission power adjustment method, device and access device; Can select transmitting power preferable concerning the terminal; Avoid occurring to cause producing bigger same frequency/neighbour and disturb the situation that perhaps causes the terminal normally to receive frequently because of transmitting power is too small because of transmitting power is excessive.
First aspect of the present invention provides a kind of transmission power adjustment method, comprising:
From the corresponding power grade scope in terminal, select the corresponding transmitting power of a power grade as current transmit power, add up the corresponding packet loss of each transmission rate under the said current transmit power;
Calculate the assessed value of said current transmit power according to the corresponding packet loss of said each transmission rate;
Assessed value according to said current transmit power is adjusted said current transmit power.
Another aspect of the present invention provides a kind of transmitting power adjusting device, comprising:
Statistical module is used for the power grade scope corresponding from the terminal and selects the corresponding transmitting power of a power grade as current transmit power, adds up the corresponding packet loss of each transmission rate under the said current transmit power;
Evaluation module is used for calculating according to the corresponding packet loss of said each transmission rate the assessed value of said current transmit power;
Adjusting module is used for according to the assessed value of said current transmit power said current transmit power being adjusted.
Another aspect of the present invention provides a kind of access device, comprises above-mentioned transmitting power adjusting device.
Technique effect of the present invention is: from the corresponding power grade scope in terminal, select the corresponding transmitting power of a power grade as current transmit power; Add up the corresponding packet loss of each transmission rate under the said current transmit power; Calculate the assessed value of said current transmit power according to the corresponding packet loss of said each transmission rate; According to the assessed value of the corresponding packet loss calculating current transmit power of each transmission rate, current transmit power is adjusted according to the assessed value of current transmit power.Present embodiment can be selected transmitting power preferable concerning the terminal, avoids occurring to cause producing bigger same frequency/neighbour because of transmitting power is excessive and disturbs the situation that perhaps causes the terminal normally to receive because of transmitting power is too small frequently.
Description of drawings
Fig. 1 is the flow chart of transmission power adjustment method embodiment one of the present invention;
Fig. 2 is the flow chart of transmission power adjustment method embodiment two of the present invention;
Fig. 3 is the structural representation of transmitting power adjusting device embodiment one of the present invention;
Fig. 4 is the structural representation of transmitting power adjusting device embodiment two of the present invention.
Embodiment
Fig. 1 is the flow chart of transmission power adjustment method embodiment one of the present invention, and as shown in Figure 1, present embodiment provides a kind of transmission power adjustment method, can specifically comprise the steps:
In the present embodiment, before the transmitting power of AP is adjusted, can obtain the corresponding power grade scope in this terminal in advance, this power grade scope is that AP sends the corresponding power grade scope of the employed radio-frequency emission power of message to this terminal.Terminal in the present embodiment can be specially STA.After getting access to the corresponding power grade scope in terminal; Can from this power grade scope, select a transmitting power; Use this transmitting power to send message to the terminal, initial situation can select down center transmitting power in this power grade scope as current transmit power.Select the different transmission rates under the current transmit power based on the rate algorithms of AP then, the packet loss that statistics produces when adopting each transmission rate to send message respectively.
The corresponding packet loss of each transmission rate under the current transmit power that obtains based on statistics calculates the assessed value of current transmit power, promptly obtains goodput through transmission rate and packet loss, and with goodput current transmit power is assessed.
After calculating the assessed value of current transmit power, current transmit power is adjusted according to this assessed value.If the assessed value of current transmit power is higher, show that then the goodput that adopts current transmit power to send message is bigger; If the assessed value of current transmit power is lower, show that then the goodput that adopts current transmit power to send message is less.Present embodiment specifically is in the power grade scope that above-mentioned steps 101 gets access to, to adjust to the adjustment of current transmit power; On the basis of the corresponding power grade of current transmit power, adjust power grade up or down; Then that adjusted power grade is corresponding transmitting power is as new current transmit power, thereby gets access to transmitting power preferable for this terminal.
Present embodiment provides a kind of transmission power adjustment method; From the corresponding power grade scope in terminal, select the corresponding transmitting power of a power grade as current transmit power; Add up the corresponding packet loss of each transmission rate under the said current transmit power; Calculate the assessed value of said current transmit power according to the corresponding packet loss of said each transmission rate; According to the assessed value of the corresponding packet loss calculating current transmit power of each transmission rate, current transmit power is adjusted according to the assessed value of current transmit power.Present embodiment can be selected transmitting power preferable concerning the terminal, avoids occurring to cause producing bigger same frequency/neighbour because of transmitting power is excessive and disturbs the situation that perhaps causes the terminal normally to receive because of transmitting power is too small frequently.
Fig. 2 is the flow chart of transmission power adjustment method embodiment two of the present invention, and as shown in Figure 2, present embodiment provides a kind of transmission power adjustment method, can specifically comprise the steps:
In the present embodiment, when AP received the message of STA, all through obtain the signal strength signal intensity of this STA in real time from the message of STA, i.e. the message of STA transmission can identify the signal strength signal intensity of this STA.
Step 202 is judged this STA for new related STA, if then execution in step 204, otherwise execution in step 203.
When AP receives the message of STA, can judge earlier that whether this STA is new related STA, judges promptly whether AP receives the message of this STA first; Carry out the relevant information of not preserving this STA among the AP before related at AP and STA; If then execution in step 204, otherwise execution in step 203.
When STA is not the STA of new association; The signal strength signal intensity of the current STA that message identified that receives of AP judgement surpasses preset strength difference threshold value with the absolute value of the difference of the signal strength signal intensity of last this STA that message identified that receives; Whether the signal strength signal intensity that is twice transmission of AP detection STA message changes, and should change whether surpass the strength difference threshold value, if; Then execution in step 204, otherwise execution in step 206.
When the absolute value of the signal strength signal intensity of the current STA that message identified that receives and the difference of the signal strength signal intensity of last this STA that message identified that receives surpasses preset strength difference threshold value; When perhaps this STA is the STA of new association, obtain the corresponding power grade scope of this STA again.Present embodiment is earlier according to the signal strength signal intensity of STA and the total number of grades of the power grade of division in advance; Generate the corresponding power grade of center transmitting power in the corresponding power grade scope of STA; Specifically can the transmitting power of AP be divided in advance the individual grade of N (being 1-N), the respectively corresponding transmitting power of each grade.The corresponding power grade of center transmitting power in the power grade scope of STA correspondence, can specifically adopt following formula (1) to calculate:
Wherein, N
cBe the corresponding power grade of center transmitting power in the corresponding power grade scope of STA, can be according to the power grade of dividing before according to N
cGet access to corresponding center transmitting power, N be the total number of grades of the power grade of division in advance, and RSSI is the signal strength signal intensity of STA, and its value is 0-100.
The corresponding power grade of center transmitting power in obtaining the corresponding power grade scope of STA; The power grade corresponding according to this center transmitting power generates the corresponding power grade scope of this STA with preset grade point, and the pairing transmitting power of each power grade is that AP sends the transmitting power that message can adopt to this STA in this power grade scope.Particularly, can adopt following formula (2) and (3) to obtain the lower limit and the higher limit of the corresponding power grade scope of this STA respectively:
P
min＝MAX(0,N
c-M) (2)
P
max＝MIN(N,N
c+M) (3)
Wherein, M is preset grade point, and M is less than N
cPositive integer, be [P thereby can obtain the corresponding power grade scope of STA
Min, P
Max].
According to above-mentioned steps; When this STA is not new related STA; And when the absolute value of the difference of the signal strength signal intensity of the signal strength signal intensity of the current STA that message identified that receives and last this STA that message identified that receives surpasses preset strength difference threshold value; The variation that shows before and after the STA signal strength signal intensity of sending message for twice is less, and STA is current possibly not to be moved, and because transmitting power and distance dependent; Then need not to obtain again the corresponding power grade scope of this STA this moment, the power grade scope of obtaining before still adopting; When this STA is new related STA; When the absolute value of the difference of the signal strength signal intensity of the signal strength signal intensity of the perhaps current STA that message identified that receives and last this STA that message identified that receives surpasses preset strength difference threshold value; The variation that shows before and after the STA signal strength signal intensity of sending message for twice is bigger; STA is current possibly to be moved, and because transmitting power and distance dependent then need obtain the corresponding power grade scope of this STA this moment again.After getting access to the corresponding power grade scope of STA, AP can select transmitting power to send message to STA from this power grade scope, can select N earlier under the initial condition
cCorresponding center transmitting power is a current transmit power.Promptly adopt the center transmitting power to send message to STA, and the corresponding packet loss of each transmission rate under the statistics current transmit power.In the present embodiment, can adopt existing rate algorithms to select the transmission rate under the current transmit power, adopt each transmission rate to send message then respectively, obtain the corresponding packet loss of each transmission rate to STA.
Behind the packet loss that gets access to each transmission rate correspondence under the current transmit power,, calculate the corresponding handling capacity of each transmission rate respectively based on each transmission rate and the corresponding packet loss of each transmission rate.Because transmission rate can reflect maximum throughput theoretically, more greatly then goodput is more little for packet loss, and therefore, present embodiment can specifically adopt following formula (4) to calculate the corresponding throughput of each transmission rate:
E
i＝R
i×(1-per
i) （4）
Wherein, i=0,1,2 ... (k-1), k is the number of all transmission rates under this STA and the AP current transmit power of consulting, R
iBe i transmission rate, per
iBe transmission rate R
iCorresponding packet loss, E
iBe transmission rate R
iCorresponding throughput.
After calculating the corresponding throughput of each transmission rate; Generate the assessed value of current transmit power according to each throughput; Specifically that each transmission rate under the current transmit power is corresponding throughput sum promptly can adopt following formula (5) to calculate the assessed value of current transmit power as the assessed value of this current transmitting power:
After getting access to the assessed value of current power, judge whether the absolute value of difference of assessed value of assessed value and a last transmitting power of current transmit power surpasses preset assessment difference threshold, if then execution in step 210, otherwise execution in step 213.Present embodiment is to guarantee reduce transmitting power, and the assessed value of transmitting power can be used for weighing the size of throughput under the impregnable prerequisite of throughput as far as possible; Therefore present embodiment compares the size of the assessed value of former and later two transmitting powers, if assessed value increases, then can reduce transmitting power, if assessed value reduces, then can increase transmitting power.And the purpose that the assessment difference threshold is set here to be assessed value for fear of former and later two transmitting powers differ hour does not stop to adjust transmitting power, cause the bigger problem of transmitting power fluctuation.If this current transmitting power is an Initial Trans, then the assessed value of a last transmitting power here can be set at a preset value, and relatively whether the absolute value of the assessed value of current transmit power and the difference of preset value surpasses and assess difference threshold.If current transmit power is not an Initial Trans, then going up a transmitting power is the transmitting power before the current transmit power adjustment.
Whether step 210, the assessed value of judging current transmit power greater than the assessed value of a last transmitting power, if then execution in step 211, otherwise execution in step 212.
When the absolute value of the difference of the assessed value of the assessed value of current transmit power and a last transmitting power surpasses preset assessment difference threshold; The transmitting power of twice transmission message differs bigger before and after showing; Can adjust transmitting power; Then continue to judge the size of assessed value of assessed value and a last transmitting power of current transmit power, whether the assessed value of promptly judging current transmit power greater than the assessed value of a last transmitting power, if; Then execution in step 211, otherwise execution in step 212.
Step 211 is adjusted into the corresponding transmitting power of next grade of current transmit power corresponding grades in the power grade scope with current transmit power, and adopts adjusted transmitting power to send message to STA, and returns execution in step 201.
If the assessed value of current transmit power is greater than the assessed value of a last transmitting power; Then showing before the corresponding throughput of current transmit power relatively increases; Can current transmit power be adjusted into the corresponding transmitting power of next grade of current transmit power corresponding grades in the power grade scope; Promptly in the power grade scope, haircut and penetrate power, and adopt adjusted transmitting power to send message to STA to downward modulation.If current transmit power has been the corresponding power of lower limit of power grade in the power grade scope, it is constant then can to keep current transmit power, and returns execution in step 201.
Step 212 is adjusted into the corresponding transmitting power of a last grade of current transmit power corresponding grades in the power grade scope with current transmit power, and adopts adjusted transmitting power to send message to STA, and returns execution in step 201.
If the assessed value of current transmit power is less than the assessed value of a last transmitting power; Then showed before the corresponding throughput of current transmit power relatively and reduced; Can current transmit power be adjusted into the corresponding transmitting power of a last grade of current transmit power corresponding grades in the power grade scope; Promptly in the power grade scope, haircut and penetrate power, and adopt adjusted transmitting power to send message, and return execution in step 201 to STA to rise.If current transmit power has been the corresponding power of higher limit of power grade in the power grade scope, it is constant then can to keep current transmit power.
Step 213, it is constant to keep current transmit power, and adopts current transmit power to send message to STA, and returns execution in step 201.
If the absolute value of the difference of the assessed value of the assessed value of current transmit power and a last transmitting power does not surpass preset assessment difference threshold; The transmitting power of twice transmission message differs less before and after then showing; Can transmitting power not adjusted, too big with the fluctuation of avoiding transmitting power, it is constant therefore to keep current transmit power; And adopt current transmit power to send message, and return execution in step 201 to STA.
Present embodiment provides a kind of transmission power adjustment method; From the corresponding power grade scope in terminal, select the corresponding transmitting power of a power grade as current transmit power; Add up the corresponding packet loss of each transmission rate under the said current transmit power; Calculate the assessed value of said current transmit power according to the corresponding packet loss of said each transmission rate; According to the assessed value of the corresponding packet loss calculating current transmit power of each transmission rate, current transmit power is adjusted according to the assessed value of current transmit power.Present embodiment can be selected transmitting power preferable concerning the terminal, avoids occurring to cause producing bigger same frequency/neighbour because of transmitting power is excessive and disturbs the situation that perhaps causes the terminal normally to receive because of transmitting power is too small frequently; And present embodiment selects less transmitting power as the corresponding center transmitting power of STA as much as possible; Thereby select the less power grade scope of grade; Realize reducing transmitting power as much as possible, but simultaneously through each transmitting power being assessed to guarantee that corresponding throughput can not reduce; Therefore present embodiment can reduce with frequency/neighbour and disturb frequently guaranteeing farthest to reduce the transmitting power of AP under the impregnable prerequisite of AP performance effectively, has improved the whole net of WLAN throughput.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each method embodiment can be accomplished through the relevant hardware of program command.Aforesaid program can be stored in the computer read/write memory medium.This program the step that comprises above-mentioned each method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Fig. 3 is the structural representation of transmitting power adjusting device embodiment one of the present invention, and as shown in Figure 3, present embodiment provides a kind of transmitting power adjusting device, can specifically carry out each step among the said method embodiment one, repeats no more here.The transmitting power adjusting device that present embodiment provides can specifically comprise statistical module 301, evaluation module 302 and adjusting module 303.Wherein, statistical module 301 is used for the power grade scope corresponding from the terminal and selects the corresponding transmitting power of a power grade as current transmit power, adds up the corresponding packet loss of each transmission rate under the said current transmit power.Evaluation module 302 is used for calculating according to the corresponding packet loss of said each transmission rate the assessed value of said current transmit power.Adjusting module 303 is used for according to the assessed value of said current transmit power said current transmit power being adjusted.
Fig. 4 is the structural representation of transmitting power adjusting device embodiment two of the present invention, and as shown in Figure 4, present embodiment provides a kind of transmitting power adjusting device, can specifically carry out each step among the said method embodiment two, repeats no more here.The transmitting power adjusting device that present embodiment provides also comprises signal strength signal intensity acquisition module 401 and rate range acquisition module 402 on above-mentioned basis shown in Figure 3.Wherein, signal strength signal intensity acquisition module 401 is used for according to obtaining the signal strength signal intensity at said terminal in real time from the message at said terminal.Rate range acquisition module 402 is used for when said terminal is new associated terminals; Perhaps; When said terminal is not new associated terminals; And when the absolute value of the signal strength signal intensity at the current said terminal that message identified that receives and the difference of the signal strength signal intensity at the last said terminal that message identified that receives surpasses the strength difference threshold value,, obtain the corresponding power grade scope in said terminal according to the total number of grades of the signal strength signal intensity at said terminal and the power grade divided in advance.
Particularly, the rate range acquisition module 402 in the present embodiment can specifically comprise first generation unit 412 and second generation unit 422.Wherein, First generation unit 412 is used for when said terminal is new associated terminals; Perhaps; When said terminal is not new associated terminals; And when the absolute value of the signal strength signal intensity at the current said terminal that message identified that receives and the difference of the signal strength signal intensity at the last said terminal that message identified that receives surpasses the strength difference threshold value,, generate the power grade of the center transmitting power correspondence in the corresponding power grade scope in said terminal according to the total number of grades of the signal strength signal intensity at said terminal with the power grade of dividing in advance.Second generation unit 422 is used for generating the corresponding power grade scope in said terminal according to the corresponding power grade of said center transmitting power with preset grade point.
Particularly; First generation unit 412 in the present embodiment can specifically be used for according to the signal strength signal intensity at said terminal and the total number of grades of the power grade of dividing in advance, adopts aforementioned calculation formula (1) to generate the corresponding power grade of center transmitting power in the corresponding power grade scope in said terminal.
Particularly, second generation unit 422 in the present embodiment can specifically be used for the power grade and preset grade point corresponding according to said center transmitting power, adopts above-mentioned formula (2) to generate the lower limit of the corresponding power grade scope in said terminal; The power grade and preset grade point corresponding according to said center transmitting power adopt above-mentioned formula (3) to generate the higher limit of the corresponding power grade scope in said terminal.
Particularly, the evaluation module in the present embodiment 302 can specifically comprise computing unit 312 and the 3rd generation unit 322.Wherein, computing unit 312 is used for calculating the corresponding throughput of said each transmission rate respectively according to said each transmission rate and the corresponding packet loss of said each transmission rate.The 3rd generation unit 322 is used for generating according to the corresponding throughput of said each transmission rate the assessed value of said current transmit power.
Particularly, the adjusting module in the present embodiment 303 can specifically comprise judging unit 313, first adjustment unit 323 and second adjustment unit 333.Wherein, Judging unit 313 is used for when the absolute value of the difference of the assessed value of the assessed value of said current transmit power and a last transmitting power surpasses preset assessment difference threshold, and whether the assessed value of judging said current transmit power is greater than the assessed value of a said last transmitting power.First adjustment unit 323 is used for if the assessed value of current transmit power greater than the assessed value of a said last transmitting power, then is adjusted into current transmit power the corresponding transmitting power of next grade of current transmit power corresponding grades described in the said power grade scope.Second adjustment unit 333 is used for if the assessed value of current transmit power less than the assessed value of a said last transmitting power, then is adjusted into current transmit power the transmitting power of the last grade correspondence of current transmit power corresponding grades described in the said power grade scope.Wherein, when said current transmit power is Initial Trans, the assessed value of a said last transmitting power is set at preset assessed value; When said current transmit power was not Initial Trans, a said last transmitting power was the transmitting power before said current transmit power adjustment.
Present embodiment provides a kind of transmitting power adjusting device; From the corresponding power grade scope in terminal, select the corresponding transmitting power of a power grade as current transmit power; Add up the corresponding packet loss of each transmission rate under the said current transmit power; Calculate the assessed value of said current transmit power according to the corresponding packet loss of said each transmission rate; According to the assessed value of the corresponding packet loss calculating current transmit power of each transmission rate, current transmit power is adjusted according to the assessed value of current transmit power.Present embodiment can be selected transmitting power preferable concerning the terminal, avoids occurring to cause producing bigger same frequency/neighbour because of transmitting power is excessive and disturbs the situation that perhaps causes the terminal normally to receive because of transmitting power is too small frequently; And present embodiment selects less transmitting power as the corresponding center transmitting power of STA as much as possible; Thereby select the less power grade scope of grade; Realize reducing transmitting power as much as possible, but simultaneously through each transmitting power being assessed to guarantee that corresponding throughput can not reduce; Therefore present embodiment can reduce with frequency/neighbour and disturb frequently guaranteeing farthest to reduce the transmitting power of AP under the impregnable prerequisite of AP performance effectively, has improved the whole net of WLAN throughput.
Present embodiment also provides a kind of access device, can specifically comprise above-mentioned Fig. 3 or transmitting power adjusting device shown in Figure 4.
What should explain at last is: above each embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although the present invention has been carried out detailed explanation with reference to aforementioned each embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, perhaps to wherein part or all technical characteristic are equal to replacement; And these are revised or replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (13)
1. a transmission power adjustment method is characterized in that, comprising:
From the corresponding power grade scope in terminal, select the corresponding transmitting power of a power grade as current transmit power, add up the corresponding packet loss of each transmission rate under the said current transmit power;
Calculate the assessed value of said current transmit power according to the corresponding packet loss of said each transmission rate;
Assessed value according to said current transmit power is adjusted said current transmit power.
2. method according to claim 1 is characterized in that, also comprises:
According to the signal strength signal intensity of obtaining said terminal from the message at said terminal in real time;
When said terminal is new associated terminals; Perhaps; When said terminal is not new associated terminals; And when the absolute value of the signal strength signal intensity at the current said terminal that message identified that receives and the difference of the signal strength signal intensity at the last said terminal that message identified that receives surpasses the strength difference threshold value,, obtain the corresponding power grade scope in said terminal according to the total number of grades of the signal strength signal intensity at said terminal and the power grade divided in advance.
3. method according to claim 2 is characterized in that, and is said according to the signal strength signal intensity at said terminal and the total number of grades of the power grade of dividing in advance, obtains the corresponding power grade scope in said terminal and comprises:
According to the signal strength signal intensity at said terminal with the total number of grades of the power grade of dividing in advance, generate the corresponding power grade of center transmitting power in the corresponding power grade scope in said terminal;
The power grade corresponding according to said center transmitting power generates the corresponding power grade scope in said terminal with preset grade point.
4. method according to claim 3; It is characterized in that; Said according to the signal strength signal intensity at said terminal with the total number of grades of the power grade of dividing in advance, the corresponding power grade of center transmitting power that generates in the corresponding power grade scope in said terminal comprises:
According to the signal strength signal intensity at said terminal with the total number of grades of the power grade of dividing in advance, adopt following computing formula to generate the corresponding power grade of center transmitting power in the corresponding power grade scope in said terminal:
Wherein, N
cBe the corresponding power grade of center transmitting power in the corresponding power grade scope of STA, N be the total number of grades of the power grade of division in advance, and RSSI is the signal strength signal intensity of STA.
5. method according to claim 3 is characterized in that, said power grade according to said center transmitting power correspondence generates the corresponding power grade scope in said terminal with preset grade point and comprises:
The power grade and preset grade point corresponding according to said center transmitting power, adopt following formula to generate the lower limit of the corresponding power grade scope in said terminal:
P
min＝MAX(0,N
c-M)；
The power grade and preset grade point corresponding according to said center transmitting power, adopt following formula to generate the higher limit of the corresponding power grade scope in said terminal:
P
max＝MIN(N,N
c+M)；
Wherein, M is preset grade point, and M is less than N
cPositive integer, N
cBe the corresponding power grade of center transmitting power in the corresponding power grade scope of STA.
6. according to each described method among the claim 1-5, it is characterized in that the assessed value that said packet loss according to said each transmission rate correspondence calculates said current transmit power comprises:
Based on said each transmission rate and the corresponding packet loss of said each transmission rate, calculate the corresponding handling capacity of said each transmission rate respectively;
Generate the assessed value of said current transmit power according to the corresponding throughput of said each transmission rate.
7. method according to claim 6 is characterized in that, said assessed value according to said current transmit power comprises said current transmit power adjustment:
When the absolute value of the difference of the assessed value of the assessed value of said current transmit power and a last transmitting power surpassed preset assessment difference threshold, whether the assessed value of judging said current transmit power was greater than the assessed value of a said last transmitting power;
If the assessed value of current transmit power greater than the assessed value of a said last transmitting power, then is adjusted into current transmit power the corresponding transmitting power of next grade of current transmit power corresponding grades described in the said power grade scope;
If the assessed value of current transmit power less than the assessed value of a said last transmitting power, then is adjusted into current transmit power the corresponding transmitting power of a last grade of current transmit power corresponding grades described in the said power grade scope;
Wherein, when said current transmit power is Initial Trans, the assessed value of a said last transmitting power is set at preset assessed value; When said current transmit power was not Initial Trans, a said last transmitting power was the transmitting power before said current transmit power adjustment.
8. a transmitting power adjusting device is characterized in that, comprising:
Statistical module is used for the power grade scope corresponding from the terminal and selects the corresponding transmitting power of a power grade as current transmit power, adds up the corresponding packet loss of each transmission rate under the said current transmit power;
Evaluation module is used for calculating according to the corresponding packet loss of said each transmission rate the assessed value of said current transmit power;
Adjusting module is used for according to the assessed value of said current transmit power said current transmit power being adjusted.
9. device according to claim 8 is characterized in that, also comprises:
The signal strength signal intensity acquisition module is used for according to obtaining the signal strength signal intensity at said terminal in real time from the message at said terminal;
The rate range acquisition module; Be used for when said terminal is new associated terminals; Perhaps, when said terminal is not new associated terminals, and the absolute value of the signal strength signal intensity at the current said terminal that message identified that receives and the difference of the signal strength signal intensity at the last said terminal that message identified that receives is when surpassing the strength difference threshold value; According to the signal strength signal intensity at said terminal and the total number of grades of the power grade of dividing in advance, obtain the corresponding power grade scope in said terminal.
10. device according to claim 9 is characterized in that, said rate range acquisition module comprises:
First generation unit; Be used for when said terminal is new associated terminals; Perhaps; When said terminal is not new associated terminals; And when the absolute value of the signal strength signal intensity at the current said terminal that message identified that receives and the difference of the signal strength signal intensity at the last said terminal that message identified that receives surpasses the strength difference threshold value,, generate the power grade of the center transmitting power correspondence in the corresponding power grade scope in said terminal according to the total number of grades of the signal strength signal intensity at said terminal with the power grade of dividing in advance;
Second generation unit is used for generating the corresponding power grade scope in said terminal according to the corresponding power grade of said center transmitting power with preset grade point.
11. each described device is characterized in that according to Claim 8-10, said evaluation module comprises:
Computing unit is used for calculating the corresponding throughput of said each transmission rate respectively according to said each transmission rate and the corresponding packet loss of said each transmission rate;
The 3rd generation unit is used for generating according to the corresponding throughput of said each transmission rate the assessed value of said current transmit power.
12. device according to claim 11 is characterized in that, said adjusting module comprises:
Judging unit; Be used for when the absolute value of the difference of the assessed value of the assessed value of said current transmit power and a last transmitting power surpasses preset assessment difference threshold, whether the assessed value of judging said current transmit power is greater than the assessed value of a said last transmitting power;
First adjustment unit; Be used for if the assessed value of current transmit power greater than the assessed value of a said last transmitting power, then is adjusted into current transmit power the corresponding transmitting power of next grade of current transmit power corresponding grades described in the said power grade scope;
Second adjustment unit; Be used for if the assessed value of current transmit power less than the assessed value of a said last transmitting power, then is adjusted into current transmit power the transmitting power of the last grade correspondence of current transmit power corresponding grades described in the said power grade scope;
Wherein, when said current transmit power is Initial Trans, the assessed value of a said last transmitting power is set at preset assessed value; When said current transmit power was not Initial Trans, a said last transmitting power was the transmitting power before said current transmit power adjustment.
13. an access device is characterized in that, comprises each described transmitting power adjusting device among the claim 8-12.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506444A (en) * | 2014-12-02 | 2015-04-08 | 上海斐讯数据通信技术有限公司 | Power display method for router and router |
| CN104661295A (en) * | 2015-01-24 | 2015-05-27 | 杭州敦崇科技股份有限公司 | Packet-by-packet power control method based on rate set |
| WO2015192302A1 (en) * | 2014-06-16 | 2015-12-23 | 华为技术有限公司 | Access point, station, access controller and noise emission method |
| CN105451323A (en) * | 2015-12-01 | 2016-03-30 | 中国联合网络通信集团有限公司 | Home gateway transmission efficiency adjustment method and device |
| CN105873201A (en) * | 2016-06-12 | 2016-08-17 | 浙江大学 | Power regulating method based on RSSI (received signal strength indicator) |
| CN106792462A (en) * | 2016-12-22 | 2017-05-31 | 深圳Tcl数字技术有限公司 | Bluetooth audio frequency transmits method of adjustment and device |
| CN109041189A (en) * | 2018-07-20 | 2018-12-18 | 深圳芯之联科技有限公司 | A kind of transmission power control method and device of wireless telecom equipment |
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| CN109769291A (en) * | 2017-11-09 | 2019-05-17 | ***通信有限公司研究院 | A kind of method and terminal of terminal power control |
| CN109804677A (en) * | 2016-09-29 | 2019-05-24 | 株式会社Ntt都科摩 | User apparatus and base station |
| CN105188113B (en) * | 2015-06-08 | 2019-10-29 | 联想(北京)有限公司 | A kind of information processing method and radio reception device |
| CN110875756A (en) * | 2018-08-29 | 2020-03-10 | 杭州海康威视数字技术股份有限公司 | Method and equipment for automatically adjusting transmitting power in frequency hopping communication |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050185583A1 (en) * | 2004-02-19 | 2005-08-25 | Hosein Patrick A. | QoS management for multiple service instances |
| CN101106399A (en) * | 2007-08-16 | 2008-01-16 | 上海交通大学 | Self-adapted distributed power control method |
| CN101977097A (en) * | 2010-11-18 | 2011-02-16 | 天津大学 | Method for combined adjustment of adaptive rate and power of remote WiFi link |
| CN102076073A (en) * | 2009-11-23 | 2011-05-25 | 中兴通讯股份有限公司 | Method, device and system for controlling outer loop power |
-
2012
- 2012-07-31 CN CN201210270129.5A patent/CN102781087B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050185583A1 (en) * | 2004-02-19 | 2005-08-25 | Hosein Patrick A. | QoS management for multiple service instances |
| CN101106399A (en) * | 2007-08-16 | 2008-01-16 | 上海交通大学 | Self-adapted distributed power control method |
| CN102076073A (en) * | 2009-11-23 | 2011-05-25 | 中兴通讯股份有限公司 | Method, device and system for controlling outer loop power |
| CN101977097A (en) * | 2010-11-18 | 2011-02-16 | 天津大学 | Method for combined adjustment of adaptive rate and power of remote WiFi link |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015192302A1 (en) * | 2014-06-16 | 2015-12-23 | 华为技术有限公司 | Access point, station, access controller and noise emission method |
| CN104506444A (en) * | 2014-12-02 | 2015-04-08 | 上海斐讯数据通信技术有限公司 | Power display method for router and router |
| CN104661295A (en) * | 2015-01-24 | 2015-05-27 | 杭州敦崇科技股份有限公司 | Packet-by-packet power control method based on rate set |
| CN104661295B (en) * | 2015-01-24 | 2018-01-16 | 杭州敦崇科技股份有限公司 | Packet-by-packet Poewr control method based on rate set |
| CN105188113B (en) * | 2015-06-08 | 2019-10-29 | 联想(北京)有限公司 | A kind of information processing method and radio reception device |
| CN105451323A (en) * | 2015-12-01 | 2016-03-30 | 中国联合网络通信集团有限公司 | Home gateway transmission efficiency adjustment method and device |
| CN105451323B (en) * | 2015-12-01 | 2018-10-09 | 中国联合网络通信集团有限公司 | Home gateway transmission power adjustment method and device |
| CN105873201B (en) * | 2016-06-12 | 2019-04-12 | 浙江大学 | A kind of power regulating method based on RSSI |
| CN105873201A (en) * | 2016-06-12 | 2016-08-17 | 浙江大学 | Power regulating method based on RSSI (received signal strength indicator) |
| CN109804677A (en) * | 2016-09-29 | 2019-05-24 | 株式会社Ntt都科摩 | User apparatus and base station |
| CN109804677B (en) * | 2016-09-29 | 2022-01-18 | 株式会社Ntt都科摩 | User device and base station |
| CN106792462A (en) * | 2016-12-22 | 2017-05-31 | 深圳Tcl数字技术有限公司 | Bluetooth audio frequency transmits method of adjustment and device |
| CN109769291A (en) * | 2017-11-09 | 2019-05-17 | ***通信有限公司研究院 | A kind of method and terminal of terminal power control |
| CN109041189A (en) * | 2018-07-20 | 2018-12-18 | 深圳芯之联科技有限公司 | A kind of transmission power control method and device of wireless telecom equipment |
| CN109041189B (en) * | 2018-07-20 | 2021-07-30 | 深圳全志在线有限公司 | Transmission power control method and device of wireless communication equipment |
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