CN101442796B - Method, apparatus and system for adjusting emission power - Google Patents

Abstract

The embodiment of the present invention discloses a transmission power adjustment method, device and system, which relate to the communication field and are invented to solve the problem of inaccurate transmission power setting. The technical solution provided by the embodiment of the present invention is: receiving the received power RSCP and signal quality of the pilot channel reported by more than two mobile stations; and adjusting the transmit power according to the received RSCP and signal quality. The technical solutions provided by the embodiments of the present invention can be applied in wireless communication networks such as CDMA or WCDMA.

Description

Method, device and system for adjusting transmission power

technical field

The present invention relates to the communication field, in particular to a transmission power adjustment method, device and system. the

Background technique

In a cellular communication system (such as a CDMA system), the coverage of a cell is generally related to the transmission power of the base station. When the transmission power is set too small, the coverage of the cell is small, and the area where the mobile station can communicate is limited, which may cause mobile The downlink quality of the station is degraded; when the transmission power is set too high, it will cause interference to adjacent cell base stations or mobile stations, increase the consumption of extra power, and cause waste of system resources. the

In the prior art, a fixed transmit power is generally set through a link budget or coverage prediction simulation method, thereby controlling the coverage area of a base station signal. In the process of realizing the present invention, the inventors found that the prior art has at least the following problems: the actual wireless propagation path is complex and the interference of other cells makes the fixed transmission power set by the method of link budget or coverage prediction simulation inaccurate . the

Contents of the invention

Embodiments of the present invention provide a transmission power adjustment method, device and system, which can accurately configure the transmission power. the

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

A method for adjusting transmission power, comprising: receiving received power RSCP and signal quality of pilot channels reported by more than two mobile stations; combining the received RSCP and signal quality with the preset received power threshold and The signal quality threshold is compared, and the transmit power is adjusted according to the comparison result. the

A device for adjusting transmission power, comprising:

The receiving unit is used to receive the received power RSCP and signal quality of the pilot channel reported by more than two mobile stations;

The transmit power adjustment unit is used to compare the RSCP and signal quality received by the receiving unit with the preset received power threshold and signal quality threshold of the pilot channel, and adjust the transmit power according to the comparison result. the

A transmission power adjustment system includes the transmission power adjustment device. the

The transmission power adjustment method, device and system provided by the embodiments of the present invention adjust the transmission power according to the RSCP and signal quality of the pilot channel reported by the mobile station, and accurately configure the transmission power, which solves the inaccurate configuration of the transmission power in the prior art The problem. the

Description of drawings

Fig. 1 is the flow chart of the method for adjusting the transmission power provided by the embodiment of the present invention;

Fig. 2 is the first flow chart of the method for adjusting the transmission power provided by another embodiment of the present invention;

Fig. 3 is the second flow chart of the method for adjusting the transmission power provided by another embodiment of the present invention;

Fig. 4 is the third flow chart of the method for adjusting the transmission power provided by another embodiment of the present invention;

FIG. 5 is a structural schematic diagram of a transmission power adjustment device provided by an embodiment of the present invention;

Fig. 6 is the second structural diagram of the device for adjusting the transmission power provided by the embodiment of the present invention;

FIG. 7 is a schematic structural diagram of the transmission power adjustment unit 502 in the transmission power adjustment device provided by the embodiment of the present invention shown in FIG. 5 or FIG. 6;

FIG. 8 is a second structural diagram of the transmission power adjustment unit 502 in the transmission power adjustment device provided by the embodiment of the present invention shown in FIG. 5 or FIG. 6;

FIG. 9 is a third structural schematic diagram of the transmission power adjustment unit 502 in the transmission power adjustment device provided by the embodiment of the present invention shown in FIG. 5 or FIG. 6 . the

Detailed ways

In order to solve the problem of inaccurate transmission power setting, embodiments of the present invention provide a transmission power adjustment method, device, and system. the

As shown in Figure 1, the method for adjusting the transmission power provided by the embodiment of the present invention includes:

Step 101, receiving received power (RSCP) and signal quality of the pilot channel reported by more than two mobile stations;

In this step, the received information may be periodically reported by the mobile station;

Step 102, adjust transmit power according to the received RSCP and signal quality. the

The transmission power adjustment method provided by the embodiment of the present invention can adjust the transmission power according to the RSCP and signal quality reported by more than two mobile stations, so that the transmission power can be set more accurately. the

The method for adjusting transmission power provided by the embodiments of the present invention can be applied in wireless communication networks, such as GSM (Global System for Mobile communications, Global System for Mobile Communications) system, CDMA (Code Division Multiple Access, Code Division Multiple Access) system, WCDMA (Wideband Code Division Multiple Access, wideband code division multiple access) system and LTE (long time evolution, long-term evolution) system, etc., realize the adjustment of the transmission power of the base station. the

In a wireless communication network, such as CDMA or WCDMA and other cellular communication systems, the mobile station can perform operations such as cell selection, cell reselection, or handover to other cells by measuring and evaluating the signal reception quality of the pilot channel, so as to ensure that Initiate services in cells that have reached a certain communication quality. If the set pilot channel power is too small, the area where the mobile station can communicate may be limited accordingly. Setting too large pilot power may cause interference to adjacent cells (including adjacent base stations and mobile stations) in addition to consumption of useless power. the

In addition, other channels (such as synchronization channels, paging channels, or traffic channels, etc.) can form a consistent downlink coverage radius by setting a certain power offset with the pilot channel. Similar to the power of the above-mentioned pilot channel, if the power of other channels is set too small, the downlink quality of the mobile station may also decrease; if the power of other channels is set too high, power resources will be wasted, and it will also cause damage to neighboring cells. interference. the

It is understandable that, on the whole, if the maximum transmission power setting of the base station is too small, it may also affect the downlink quality of the mobile station, and it is difficult to meet the user's communication quality requirements; the maximum transmission power setting of the base station is too large, wasting power At the same time, it will cause interference to neighboring cells. the

Therefore, the technical solutions provided by the embodiments of the present invention can not only adjust the power of the pilot channel, but also individually or jointly adjust the transmit power including other channel power and the maximum transmit power of the base station. the

In order to enable those skilled in the art to more clearly understand the technical solutions provided by the embodiments of the present invention, the present invention will be described in detail below through specific embodiments. the

As shown in Figure 2, the method for adjusting the transmission power provided by another embodiment of the present invention includes:

Step 201, the base station randomly selects more than two online mobile stations. the

Step 202, the base station sends a measurement control command to the two or more online mobile stations, instructing the two or more online mobile stations to periodically report the RSCP and signal quality of the frequency channel. Wherein, the signal quality may include a signal-to-noise ratio (Signal to Noise Ratio, SNR), a signal-to-interference ratio (Signal to InterfereRatio interfere, SIR) or a signal-to-mask ratio (Signal to Mask Ratio, SMR), etc., in this embodiment , the signal quality is specifically a signal-to-noise ratio, represented by E _C /N ₀ .

In this embodiment, the base station may send a measurement control command to more than two online mobile stations, instructing the mobile station to periodically report the RSCP and E _C /N ₀ of the frequency channel according to the measurement control command; The base station may also periodically send measurement control commands to more than two online mobile stations, instructing the mobile stations to periodically report the RSCP and E _C /N ₀ of the frequency channel.

Among them, the period for the mobile station to report RSCP and E _C /N ₀ can be set according to time, such as: the period can be set to 10 minutes; it can also be set according to the number of times, such as: the period can be set to 10 times; It can be set in other forms, and details of each case will not be described here.

Step 203, the base station receives the RSCP and E _C /N ₀ of the pilot channel periodically reported by the two or more online mobile stations.

Step 204, the base station adjusts the transmission power according to the RSCP and E _C /N ₀ received in the step 203. In this embodiment, the following steps may be included:

Step 2041, when the transmit power adjustment period arrives, obtain the target RSCP and the target E C /N ₀ that meet the preset cumulative probability from the set of RSCP obtained in step 203 and the set of _EC /N0 respectively;

In this embodiment, the adjustment period of the transmission power can be set according to time, or can be set according to the number of times, and the adjustment period of the transmission power can be the period during which one or more mobile stations report RSCP and E _C /N ₀ ;

The value of the cumulative probability can be set according to the actual fault-tolerant requirements of the system. In this embodiment, the cumulative probability can be set to 95% (that is, errors in 5% of the numerical values can be tolerated), then when the transmission power adjustment cycle timing When the device times out, or the number of transmission power times reaches the statistical threshold number, the step 2041 can specifically obtain the target RSCP and E _C /N ₀ through the following steps:

First, sort the RSCP values in the set composed of the RSCP from large to small, and sort the E _C /N ₀ values in the set composed of the E _C /N ₀ from large to small;

Then, obtain the 95th% data from the arranged RSCP set and the E _C /N ₀ set respectively as the target RSCP and the target E _C /N ₀ , for example: when the arranged RSCP set contains When there are 200 RSCPs, select the 95th% (190th) RSCP as the target RSCP from the RSCP set;

Of course, it is understandable that the above sorting can also be in ascending order, and the fault tolerance requirements can be set according to the needs of the system;

Step 2042, compare the target RSCP and target E _C /N ₀ with the preset received power threshold (RSCP_threshold) and signal quality threshold ( _EC N ₀ _threshold) of the pilot channel respectively, and adjust the transmit power according to the comparison result .

Wherein, the RSCP_threshold and _{ECNO_threshold} can be set in advance according to the wireless scenario (including coverage size and interference situation, etc.) applied by _the base station.

In this embodiment, the transmission power is used as an example to illustrate the pilot channel power, and the step 2042 to adjust the transmission power according to the comparison result can be:

When the value compared with the RSCP_threshold is greater than the RSCP_threshold, and the value compared with the E _C N ₀ _threshold is greater than the E _C N ₀ _threshold, lower the transmit power;

When the value compared with the RSCP_threshold is greater than the RSCP_threshold, and the value compared with the E _C N ₀ _threshold is less than the E _C N ₀ _threshold, increase the transmit power;

When the value compared with the RSCP_threshold is less than the RSCP_threshold, and the value compared with the E _C N ₀ _threshold is greater than the E _C N ₀ _threshold, keep the original transmit power unchanged;

When the value compared with the RSCP_threshold is less than the RSCP_threshold, and the value compared with the E _C N ₀ _threshold is less than the E _C N ₀ _threshold, increase the transmission power;

In this embodiment, the value compared with the RSCP_threshold is the target RSCP, and the value compared with the E _C N ₀ _threshold is the target E _C /N ₀ .

The value for adjusting the transmission power can be set, which can be set according to actual adjustment needs, and will not be described here. the

In actual use, the transmit power may also be the maximum transmit power, or the power of other channels (such as synchronization channels, paging channels, or traffic channels, etc.), or the maximum transmit power, pilot channel power, and other channel powers. combination. In a wireless communication system (such as a CDMA or WCDMA system, etc.), the maximum transmit power or other channel power can be obtained through the power of the pilot channel and a preset power offset from the power of the pilot channel. the

The transmission power adjustment method provided in this embodiment can obtain the adjustment information of the pilot channel power according to the RSCP and E _C /N ₀ periodically reported by more than two mobile stations, and realize the adjustment of the pilot channel power according to the adjustment information. The adjustment makes the adjusted pilot channel power more accurate. Since the pilot channel power is adjusted according to the information reported by more than two mobile stations, the adjusted pilot channel power can meet the requirements of multiple mobile stations. On the basis of downlink communication requirements, reduce the consumption of useless power and reduce the interference to adjacent base stations or mobile stations; in wireless communication networks, the maximum transmission power of the base station or other channels can pass between the pilot channel and the Set a certain power offset to form a consistent downlink coverage radius. Therefore, the technical solution provided in this embodiment can also be based on the obtained adjustment information of the pilot channel power, as well as the preset maximum transmission power or other channel power and pilot frequency. The power offset between channels adjusts the maximum transmit power or other channel power to make the adjusted maximum transmit power or other channel power more accurate, and it can also meet the downlink communication requirements of multiple mobile stations. On the one hand, the consumption of useless power is reduced, and the interference on adjacent base stations or mobile stations is reduced; of course, the technical solutions provided by the embodiments of the present invention can also improve the above-mentioned pilot channel power, maximum transmit power, and other channel power, etc. The transmit power of the base stations is jointly adjusted so that the adjusted transmit power can also meet the downlink communication requirements of the mobile station and reduce interference to adjacent base stations or mobile stations.

As shown in Figure 3, another embodiment of the present invention also provides a method for adjusting transmission power, wherein the steps 301 to 303 are similar to the steps 201 to 203 shown in Figure 2, the difference is that:

Step 304, the base station adjusts the transmission power according to the RSCP and E _C /N ₀ received in the step 303. In this embodiment, the following steps may be included:

Step 3041, when the reporting period of each mobile station arrives, the base station obtains the average received power of the pilot channel of each mobile station according to the received RSCP and E _C /N ₀ through the following formulas (1) and (2) respectively RSCP_avg and average signal quality E _C N ₀ _avg;

$\mathrm{<span\; class="notranslate">\; RSCP</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; avg</span>}{<span\; class="notranslate">\; |</span>}_{\mathrm{<span\; class="notranslate">\; j</span>}}<span\; class="notranslate">\; =</span>\frac{\underset{\mathrm{<span\; class="notranslate">\; i</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}\mathrm{<span\; class="notranslate">\; RSCP</span>}}{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>$

为基站前i次接收到第j个移动台上报的RSCP和； Wherein, j represents the jth mobile station, and i is the number of times that the base station receives the RSCP reported by the jth mobile station when the reporting period arrives,

is the RSCP sum reported by the j-th mobile station received by the base station for the previous i time;

${\mathrm{<span\; class="notranslate">\; E.</span>}}_{\mathrm{<span\; class="notranslate">\; c</span>}}{\mathrm{<span\; class="notranslate">\; N</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; avg</span>}{<span\; class="notranslate">\; |</span>}_{\mathrm{<span\; class="notranslate">\; j</span>}}<span\; class="notranslate">\; =</span>\frac{\underset{\mathrm{<span\; class="notranslate">\; i</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}{\mathrm{<span\; class="notranslate">\; E.</span>}}_{\mathrm{<span\; class="notranslate">\; c</span>}}<span\; class="notranslate">\; /</span>{\mathrm{<span\; class="notranslate">\; N</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}}{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; )</span>$

为基站前i次接收到第j个移动台上报的E_C/N₀和； Among them, j represents the jth mobile station, i is the number of times that the base station receives the E _C /N ₀ reported by the jth mobile station when the reporting period arrives,

is the sum of E _C /N ₀ reported by the jth mobile station received by the base station for the previous i time;

Step 3042, when the transmission power adjustment period arrives, obtain the target RSCP_avg and the target E _C N ₀ _avg that meet the preset cumulative probability from the set composed of the RSCP_avg and the set composed of the E _C N ₀ _avg respectively;

The specific implementation method can refer to the description of step 2041 as shown in Figure 2, and will not be repeated here;

Step 3043, compare the target RSCP_avg and target E _C N ₀ _avg with the preset RSCP_threshold and E _C N ₀ _threshold respectively, and adjust the transmission power according to the comparison result. For specific implementation steps, please refer to step 2042 shown in FIG. 2 Said, in this embodiment, the value compared with the RSCP_threshold is the target RSCP_avg, and the value compared with the E _C N ₀ _threshold is the target E _C /N ₀ _avg.

The transmission power adjustment method provided in this embodiment can obtain the adjustment information of the pilot channel power according to the RSCP and E _C /N ₀ periodically reported by more than two mobile stations, and realize the adjustment of the pilot channel power according to the adjustment information. The adjustment makes the adjusted pilot channel power more accurate. Since the pilot channel power is adjusted according to the information reported by more than two mobile stations, the adjusted pilot channel power can meet the requirements of multiple mobile stations. On the basis of downlink communication requirements, reduce the consumption of useless power and reduce the interference to adjacent base stations or mobile stations; in wireless communication networks, the maximum transmission power of the base station or other channels can pass between the pilot channel and the Set a certain power offset to form a consistent downlink coverage radius. Therefore, the technical solution provided in this embodiment can also be based on the obtained adjustment information of the pilot channel power, as well as the preset maximum transmission power or other channel power and pilot frequency. The power offset between channels adjusts the maximum transmit power or other channel power to make the adjusted maximum transmit power or other channel power more accurate, and it can also meet the downlink communication requirements of multiple mobile stations. On the one hand, the consumption of useless power is reduced, and the interference on adjacent base stations or mobile stations is reduced; of course, the technical solutions provided by the embodiments of the present invention can also improve the above-mentioned pilot channel power, maximum transmit power, and other channel power, etc. The transmit power of the base stations is jointly adjusted so that the adjusted transmit power can also meet the downlink communication requirements of the mobile station and reduce interference to adjacent base stations or mobile stations.

As shown in Figure 4, another embodiment of the present invention also provides a method for adjusting transmission power, wherein the steps 401 to 403 are similar to the steps 201 to 203 shown in Figure 2, the difference is that:

Step 404, the base station adjusts the transmission power according to the RSCP and E _C /N ₀ received in the step 403. In this embodiment, the following steps may be included:

Step 4041, when the reporting period of each mobile station arrives, the base station obtains the average received power RSCP_avg and average signal quality E _C N ₀ _avg of the pilot channel of each mobile station according to the received RSCP and E _C /N ₀ , The specific implementation method can refer to the description of step 3041 shown in FIG. 3 , and will not be repeated here;

Step 4042, obtain the current downlink load information of the base station, and when the reporting period of the mobile station arrives each time, according to the acquired downlink load information of the base station, obtain the average downlink load base station_load_avg of the base station through formula (3);

为基站前i次获取的基站下行负载信息和； Among them, i is the number of times to obtain the downlink load information of the base station when the reporting period arrives,

is the sum of downlink load information of the base station obtained by the base station for the previous i time;

Step 4043, according to the base station_load_avg, RSCP_avg and E _C N ₀ _avg, obtain the average signal quality E _C N ₀ _target of the pilot channel under the target load of the base station, EcN0_target(dB)=RSCP_avg-RSSI_target, wherein, the RSSI_target is the total received power under the target load of the base station, RSSI_target=10*log(Iouw(mW)+Ior_target(mW));

In this embodiment, the step 4043 may specifically include:

Obtain the total received power RSSI by formula (4):

  RSSI(dBm)＝RSCP_avg-EcN0_avg 

Or RSSI(mW)＝RSCP_avg/EcN0_avg (4)

Obtain the total downlink interference power Ior of the cell according to formula (5):

Ior(dBm)＝RSCP_avg-Ortho_correct+10*log(base station_load_avg/CPICH PowerRatio)

Among them, CPICH Power Ratio is the power ratio of the pilot channel, and Ortho_correct is the adjustment parameter of the pilot loss;

According to the RSSI obtained by the formula (4), the Ior obtained by the formula (5) and the following formula (6), the unwanted signal interference power Iouw is obtained:

Iouw(mW)＝RSSI(mW)-Ior(mW) (6)

Obtain the total downlink interference power Ior_target of the cell under the target load of the base station according to formula (7):

Ior_target(dBm)＝Ior+10*log(base station target load/base station_load_avg) (7)

According to the Iouw obtained by the formula (6), the Ior_target obtained by the formula (7) and the following formula (8), the total received power RSSI_target under the target load of the base station is obtained:

RSSI_target＝10*log(Iouw(mW)+Ior_target(mW)) (8)

According to the RSSI_target obtained by formula (8) and the following formula (9), the average signal quality EcN0_target of the pilot channel under the target load of the base station is obtained:

EcN0_target(dB)＝RSCP_avg-RSSI_target (9)

Step 4044, when the transmit power adjustment period arrives, from the set composed of RSCP_avg obtained in step 4041 and the set composed of E _C N ₀ _target obtained in step 4043, obtain the target RSCP_avg and target E that meet the preset cumulative probability _C N ₀ _target, the specific implementation steps can refer to the description of step 2041 shown in Figure 2, and will not be repeated here;

Step 4045, compare the target RSCP_avg and the target E _C N ₀ _target with the preset RSCP_threshold and E _C N ₀ _threshold, and adjust the transmission power according to the comparison result. For specific implementation steps, please refer to step 2042 shown in FIG. 2 As mentioned above, in this embodiment, the value compared with the RSCP_threshold is the target RSCP_avg, and the value compared with the E _C N ₀ _threshold is the target E _C N ₀ _target.

The transmission power adjustment method provided in this embodiment can obtain the RSCP_avg of each mobile station and the E _C N ₀ _target under the target load of the base station according to the RSCP and E _C /N ₀ periodically reported by more than two mobile stations. The RSCP_avg and E _C N ₀ _target obtain the adjustment information of the pilot channel power, and realize the adjustment of the pilot channel power according to the adjustment information, so that the adjusted pilot channel power can adapt to the change of the application environment of the base station, and guide The frequency channel power setting is more accurate. Since the pilot channel power is adjusted according to the information reported by more than two mobile stations, the adjusted pilot channel power can meet the downlink communication requirements of multiple mobile stations. On the basis of reducing the consumption of useless power and reducing the interference to adjacent base stations or mobile stations; Form a consistent downlink coverage radius, so the technical solution provided by this embodiment can also be based on the obtained adjustment information of the pilot channel power, as well as the preset maximum transmit power or the power offset between other channel power and the pilot channel , to adjust the maximum transmit power or other channel power, so that the adjusted maximum transmit power or other channel power can also adapt to changes in the application environment of the base station, and can also meet the downlink communication requirements of multiple mobile stations. On the one hand, the consumption of useless power is reduced, and the interference on adjacent base stations or mobile stations is reduced; of course, the technical solutions provided by the embodiments of the present invention can also improve the above-mentioned pilot channel power, maximum transmit power, and other channel power, etc. The transmit power of the base stations is jointly adjusted so that the adjusted transmit power can also meet the downlink communication requirements of the mobile station and reduce interference to adjacent base stations or mobile stations.

In the above-mentioned embodiments, the method for adjusting the transmission power provided by the embodiment of the present invention may further include the step of smoothing or filtering the obtained average data, wherein the average data may be as shown in FIG. 3 The RSCP_avg and E _C N ₀ _avg obtained in step 3041 may also be the RSCP_avg, E _C N ₀ _avg and base station_load_avg obtained in steps 4041 and 4042 shown in FIG. 4 . This step can make the obtained average data more accurate, thereby further ensuring the accuracy of the transmission power adjustment.

As shown in Figure 5, the embodiment of the present invention also provides a transmission power adjustment device, including:

The receiving unit 501 is used to receive the received power RSCP and signal quality of the pilot channel reported by more than two mobile stations;

The transmission power adjustment unit 502 is configured to adjust the transmission power according to the RSCP and signal quality received by the receiving unit 501 . Wherein, the transmit power may include pilot channel power and/or maximum transmit power. the

Further, as shown in Figure 6, the device for adjusting the transmit power may also include:

Selecting unit 503, for randomly selecting more than two online mobile stations;

The sending unit 504 is configured to send a measurement control command to the two or more online mobile stations selected by the selection unit 503, indicating the RSCP and signal quality of the reported frequency channels of the two or more online mobile stations. the

Further, as shown in FIG. 7, the transmit power adjustment unit 502 may include:

The first acquisition subunit 5021 is configured to acquire the target RSCP and the target signal satisfying the preset accumulation probability from the set of RSCP and the set of signal quality acquired by the receiving unit 501 respectively when the transmission power adjustment period arrives. quality;

The first adjustment subunit 5022 is configured to compare the target RSCP and target signal quality acquired by the first acquisition subunit 5021 with the preset received power threshold and signal quality threshold of the pilot channel, and adjust the transmission according to the comparison result. power. the

Further, as shown in FIG. 8, the transmit power adjustment unit 502 may include:

The second acquisition subunit 5023 is used to acquire the average received power RSCP_avg and the average signal of the pilot channel of each mobile station according to the RSCP and signal quality received by the receiving unit 501 when the reporting period of each mobile station arrives quality;

The third acquisition subunit 5024 is configured to acquire the target that satisfies the preset cumulative probability from the set composed of RSCP_avg and the set composed of the average signal quality obtained by the second acquisition subunit 5023 when the transmission power adjustment period arrives RSCP_avg and target average signal quality;

The second adjustment subunit 5025 is used to compare the target RSCP_avg and target average signal quality acquired by the third acquisition subunit 5024 with the preset received power threshold and signal quality threshold of the pilot channel respectively, and adjust according to the comparison result transmit power. the

Further, as shown in FIG. 9, the transmit power adjustment unit 502 may include:

The fourth acquisition subunit 5026 is used to acquire the average received power RSCP_avg and the average signal of the pilot channel of each mobile station according to the RSCP and signal quality received by the receiving unit 501 when the reporting period of each mobile station arrives. quality;

The fifth obtaining subunit 5027 is used to obtain the current downlink load information of the base station. When the mobile station reports the period every time, according to the obtained base station downlink load information, obtain the base station average downlink load base station_load_avg;

The sixth acquisition subunit 5028 is configured to acquire the pilot channel under the base station target load according to the base station_load_avg acquired by the fifth acquisition subunit 5027, and the RSCP_avg and average signal quality acquired by the fourth acquisition subunit 5026 The average signal quality of ;

The seventh obtaining subunit 5029 is configured to, when the transmit power adjustment period arrives, obtain the set composed of RSCP_avg obtained from the fourth obtaining subunit 5026 and the pilot frequency under the target load of the base station obtained by the sixth obtaining subunit 5028 In the set composed of the average signal quality of the channel, the average signal quality of the pilot channel under the target RSCP_avg satisfying the preset cumulative probability and the target base station target load is obtained;

The third adjustment subunit 50210 is used to compare the target RSCP_avg acquired by the seventh acquisition subunit 5029 and the average signal quality of the pilot channel under the target load of the target base station with the preset received power threshold and signal quality of the pilot channel respectively. The quality threshold is compared, and the transmission power is adjusted according to the comparison result. the

The device for adjusting the transmission power provided in this embodiment can obtain the adjustment information of the pilot channel power according to the RSCP and signal quality periodically reported by more than two mobile stations, and realize the adjustment of the pilot channel power according to the adjustment information, The adjusted pilot channel power can adapt to changes in the application environment of the base station, and the pilot channel power setting is more accurate. Since the pilot channel power is adjusted according to the information reported by more than two mobile stations, the adjusted The power of the pilot channel can reduce the consumption of useless power and reduce the interference to adjacent base stations or mobile stations on the basis of meeting the downlink communication requirements of multiple mobile stations; in a wireless communication network, the maximum transmit power of a base station Or other channels can form a consistent downlink coverage radius by setting a certain power offset with the pilot channel. Therefore, the technical solution provided in this embodiment can also be based on the obtained pilot channel power adjustment information and preset The maximum transmit power or other channel power and the power offset between the pilot channel, adjust the maximum transmit power or other channel power, so that the adjusted maximum transmit power or other channel power can also adapt to changes in the application environment of the base station, And it can also reduce the consumption of useless power and reduce the interference to adjacent base stations or mobile stations on the basis of meeting the downlink communication requirements of multiple mobile stations; of course, the technical solutions provided by the embodiments of the present invention can also Jointly adjust the transmit power of the base station such as the above-mentioned pilot channel power, maximum transmit power, and other channel power, so that the adjusted transmit power can also meet the downlink communication requirements of the mobile station, and reduce the impact on adjacent base stations or interference from mobile stations. the

The embodiment of the present invention also provides a transmission power adjustment system, including the transmission power adjustment device as shown in Fig. 5 to Fig. 8 . the

The transmission power adjustment system provided in this embodiment can obtain the adjustment information of the pilot channel power according to the RSCP and signal quality periodically reported by more than two mobile stations, and realize the adjustment of the pilot channel power according to the adjustment information, The adjusted pilot channel power can adapt to changes in the application environment of the base station, and the pilot channel power setting is more accurate. Since the pilot channel power is adjusted according to the information reported by more than two mobile stations, the adjusted The power of the pilot channel can reduce the consumption of useless power and reduce the interference to adjacent base stations or mobile stations on the basis of meeting the downlink communication requirements of multiple mobile stations; in a wireless communication network, the maximum transmit power of a base station Or other channels can form a consistent downlink coverage radius by setting a certain power offset with the pilot channel. Therefore, the technical solution provided in this embodiment can also be based on the obtained pilot channel power adjustment information and preset The maximum transmit power or other channel power and the power offset between the pilot channel, adjust the maximum transmit power or other channel power, so that the adjusted maximum transmit power or other channel power can also adapt to changes in the application environment of the base station, And it can also reduce the consumption of useless power and reduce the interference to adjacent base stations or mobile stations on the basis of meeting the downlink communication requirements of multiple mobile stations; of course, the technical solutions provided by the embodiments of the present invention can also Jointly adjust the transmit power of the base station such as the above-mentioned pilot channel power, maximum transmit power, and other channel power, so that the adjusted transmit power can also meet the downlink communication requirements of the mobile station, and reduce the impact on adjacent base stations or interference from mobile stations. the

Those of ordinary skill in the art can understand that all or part of the steps in the method of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, etc. disc or disc, etc. the

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present invention, and all Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims. the

Claims (20)

1. A method for adjusting transmit power, comprising: Receive the received power RSCP and signal quality of the pilot channel reported by more than two mobile stations; When the transmit power adjustment period arrives, acquire a target RSCP and a target signal quality satisfying a preset cumulative probability from the set formed by the RSCP and the set formed by the signal quality respectively; The target RSCP and target signal quality are compared with the preset received power threshold and signal quality threshold of the pilot channel respectively, and the transmit power is adjusted according to the comparison result. 2. The method according to claim 1, wherein said adjusting the transmitting power according to the comparison result comprises: When the value compared with the received power threshold is greater than the received power threshold and the value compared with the signal quality threshold is greater than the signal quality threshold, lower the transmission power; and/or, When the value compared with the received power threshold is greater than the received power threshold and the value compared with the signal quality threshold is smaller than the signal quality threshold, increase the transmit power; and/or, When the value compared with the received power threshold is smaller than the received power threshold and the value compared with the signal quality threshold is greater than the signal quality threshold, keep the original transmit power unchanged; and/or, When the value compared with the received power threshold is smaller than the received power threshold and the value compared with the signal quality threshold is smaller than the signal quality threshold, increase the transmission power; Wherein, the value compared with the received power threshold is a target RSCP, and the value compared with the signal quality threshold is a target signal quality. 3. The method according to claim 1 or 2, wherein the transmit power includes pilot channel power and/or maximum transmit power. 4. The method according to claim 1 or 2, further comprising: Randomly select more than two online mobile stations; Sending a measurement control command to the two or more online mobile stations, instructing the two or more online mobile stations to periodically report the RSCP and signal quality of the frequency channel. 5. A method for adjusting transmit power, comprising: Receive the received power RSCP and signal quality of the pilot channel reported by more than two mobile stations; When the reporting period of each mobile station arrives, according to the received RSCP and signal quality, obtain the average received power RSCP_avg and the average signal quality of the pilot channel of each mobile station; When the transmit power adjustment period arrives, acquire a target RSCP_avg and a target average signal quality satisfying a preset cumulative probability from the set formed by the RSCP_avg and the set formed by the average signal quality respectively; The target RSCP_avg and the target average signal quality are compared with the preset received power threshold and signal quality threshold of the pilot channel respectively, and the transmit power is adjusted according to the comparison result. 6. The method according to claim 5, wherein the adjusting the transmission power according to the comparison result comprises: When the value compared with the received power threshold is greater than the received power threshold and the value compared with the signal quality threshold is greater than the signal quality threshold, lower the transmission power; and/or, When the value compared with the received power threshold is greater than the received power threshold and the value compared with the signal quality threshold is smaller than the signal quality threshold, increase the transmit power; and/or, When the value compared with the received power threshold is smaller than the received power threshold and the value compared with the signal quality threshold is greater than the signal quality threshold, keep the original transmit power unchanged; and/or, When the value compared with the received power threshold is smaller than the received power threshold and the value compared with the signal quality threshold is smaller than the signal quality threshold, increase the transmission power; Wherein, the value compared with the received power threshold is a target RSCP_avg, and the value compared with the signal quality threshold is a target average signal quality. 7. The method according to claim 5 or 6, wherein the transmit power includes pilot channel power and/or maximum transmit power. 8. The method according to claim 5 or 6, further comprising: Randomly select more than two online mobile stations; Sending a measurement control command to the two or more online mobile stations, instructing the two or more online mobile stations to periodically report the RSCP and signal quality of the frequency channel. 9. A method for adjusting transmit power, comprising: Receive the received power RSCP and signal quality of the pilot channel reported by more than two mobile stations; When the reporting period of each mobile station arrives, according to the received RSCP and signal quality, obtain the average received power RSCP_avg and the average signal quality of the pilot channel of each mobile station; Obtain the current downlink load information of the base station, and obtain the average downlink load base station_load_avg of the base station according to the obtained base station downlink load information when the reporting period of the mobile station arrives each time; According to the base station_load_avg, RSCP_avg and average signal quality, obtain the average signal quality of the pilot channel under the target load of the base station; When the transmit power adjustment period arrives, obtain the target RSCP_avg and the target base station target satisfying the preset cumulative probability from the set composed of the RSCP_avg and the set composed of the average signal quality of the pilot channel under the target load of the base station, respectively. Average signal quality of the pilot channel under load; The target RSCP_avg and the average signal quality of the pilot channel under the target load of the target base station are compared with the preset received power threshold and signal quality threshold of the pilot channel respectively, and the transmit power is adjusted according to the comparison result. 10. The method according to claim 9, wherein when the signal quality is E _C /N ₀ and the average signal quality is the average signal-to-noise ratio E _C N ₀ _avg, the base station _load_avg, RSCP_avg and average signal quality, to obtain the average signal quality of the pilot channel under the target load of the base station includes: The average signal quality EcN0_target(dB)=RSCP_avg-RSSI_target of the pilot channel under the base station target load; Wherein, the RSSI_target is the total received power under the base station target load, RSSI_target=10*log(Iouw(mW)+Ior_target(mW)), and the Iouw is the unwanted signal interference power, Iouw(mW)=RSSI(mW)- Ior(mW), the Ior_target is the total downlink interference power of the cell under the base station target load, Ior_target(dBm)=Ior+10*log(base station target load/base station_load_avg). 11. The method according to claim 9 or 10, wherein the adjusting the transmitting power according to the comparison result comprises: When the value compared with the received power threshold is greater than the received power threshold and the value compared with the signal quality threshold is greater than the signal quality threshold, lower the transmission power; and/or, When the value compared with the received power threshold is greater than the received power threshold and the value compared with the signal quality threshold is smaller than the signal quality threshold, increase the transmit power; and/or, When the value compared with the received power threshold is smaller than the received power threshold and the value compared with the signal quality threshold is greater than the signal quality threshold, keep the original transmit power unchanged; and/or, When the value compared with the received power threshold is smaller than the received power threshold and the value compared with the signal quality threshold is smaller than the signal quality threshold, increase the transmit power; Wherein, the value compared with the received power threshold is the target RSCP_avg, and the value compared with the signal quality threshold is the average signal quality of the pilot channel under the target load of the base station. 12. The method according to claim 9 or 10, wherein the transmit power includes pilot channel power and/or maximum transmit power. 13. The method according to claim 9 or 10, further comprising: Randomly select more than two online mobile stations; Sending a measurement control command to the two or more online mobile stations, instructing the two or more online mobile stations to periodically report the RSCP and signal quality of the frequency channel. 14. A transmission power adjustment device, characterized in that it comprises: The receiving unit is used to receive the received power RSCP and signal quality of the pilot channel reported by more than two mobile stations; A transmission power adjustment unit, configured to adjust the transmission power according to the RSCP and signal quality received by the receiving unit; Wherein, the transmit power adjustment unit includes: The first acquisition subunit is configured to acquire the target RSCP and the target signal quality satisfying the preset cumulative probability from the set of RSCP and the set of signal quality acquired by the receiving unit respectively when the transmission power adjustment period arrives; The first adjustment subunit is configured to compare the target RSCP and target signal quality acquired by the first acquisition subunit with the preset received power threshold and signal quality threshold of the pilot channel respectively, and adjust the transmit power according to the comparison result. 15. The device of claim 14, further comprising: A selection unit is used to randomly select more than two online mobile stations; A sending unit, configured to send a measurement control command to the two or more online mobile stations selected by the selection unit, indicating the RSCP and signal quality of the reported frequency channel of the two or more online mobile stations. 16. A device for adjusting transmission power, comprising: The receiving unit is used to receive the received power RSCP and signal quality of the pilot channel reported by more than two mobile stations; A transmission power adjustment unit, configured to adjust the transmission power according to the RSCP and signal quality received by the receiving unit; Wherein, the transmit power adjustment unit includes: The second acquisition subunit is used to obtain the average received power RSCP_avg and the average signal quality of the pilot channel of each mobile station according to the RSCP and signal quality received by the receiving unit when the reporting period of each mobile station arrives; The third acquisition subunit is used to acquire the target RSCP_avg that satisfies the preset cumulative probability from the set of RSCP_avg acquired by the second acquisition subunit and the set of average signal quality respectively when the transmission power adjustment period arrives. and target average signal quality; The second adjustment subunit is also used to compare the target RSCP_avg and the target average signal quality acquired by the third acquisition unit with the preset received power threshold and signal quality threshold of the pilot channel respectively, and adjust the transmission according to the comparison result power. 17. The apparatus of claim 16, further comprising: A selection unit is used to randomly select more than two online mobile stations; A sending unit, configured to send a measurement control command to the two or more online mobile stations selected by the selection unit, indicating the RSCP and signal quality of the reported frequency channel of the two or more online mobile stations. 18. A transmission power adjustment device, characterized in that it comprises: The receiving unit is used to receive the received power RSCP and signal quality of the pilot channel reported by more than two mobile stations; A transmission power adjustment unit, configured to adjust the transmission power according to the RSCP and signal quality received by the receiving unit; Wherein, the transmit power adjustment unit includes: The fourth acquisition subunit is used to obtain the average received power RSCP_avg and average signal quality of the pilot channel of each mobile station according to the RSCP and signal quality received by the receiving unit when the reporting period of each mobile station arrives; The fifth obtaining subunit is used to obtain the current downlink load information of the base station, and obtain the average downlink load base station_load_avg of the base station according to the obtained downlink load information of the base station when the reporting period of the mobile station arrives each time; The sixth acquisition subunit is used to acquire the average signal of the pilot channel under the target load of the base station according to the base station_load_avg acquired by the fifth acquisition subunit, and the RSCP_avg and average signal quality acquired by the fourth acquisition subunit quality; The seventh acquisition subunit is also used to separately obtain the set composed of RSCP_avg obtained from the fourth acquisition subunit and the pilot channel under the target load of the base station acquired by the sixth acquisition subunit when the transmission power adjustment period arrives In the set consisting of the average signal quality of , the average signal quality of the pilot channel under the target RSCP_avg satisfying the preset cumulative probability and the target base station target load is obtained; The third adjustment subunit is also used to compare the target RSCP_avg acquired by the seventh acquisition subunit and the average signal quality of the pilot channel under the target load of the target base station with the preset received power threshold and signal quality of the pilot channel respectively. The quality threshold is compared, and the transmission power is adjusted according to the comparison result. 19. The apparatus of claim 18, further comprising: A selection unit is used to randomly select more than two online mobile stations; A sending unit, configured to send a measurement control command to the two or more online mobile stations selected by the selection unit, indicating the RSCP and signal quality of the reported frequency channel of the two or more online mobile stations. 20. A transmission power adjustment system, characterized by comprising the transmission power adjustment device according to any one of claims 14-19.

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