WO2010078790A1

WO2010078790A1 - Transmission power adjusting method, apparatus and system

Info

Publication number: WO2010078790A1
Application number: PCT/CN2009/075459
Authority: WO
Inventors: 熊建秋; 钟华正
Original assignee: 华为技术有限公司
Priority date: 2008-12-29
Filing date: 2009-12-10
Publication date: 2010-07-15
Also published as: CN101442796A; CN101442796B

Abstract

A transmission power adjusting method, apparatus and system are provided in the embodiments of the present invention, which could solve the problem that the transmission power is set incorrectly. The technical scheme provided by the embodiments of the present invention comprises: receiving the receiving power RSCP of the pilot channel and the quality of signal which are reported from two or more mobile stations; adjusting the transmission power according to the received RSCP and the quality of signal. The technical scheme provided by the embodiments of the present invention could be applied in the wireless communication network such as CDMA or WCDMA and so on.

Description

Method, device and system for adjusting transmission power The present application claims priority to Chinese patent application filed on Dec. 29, 2008, the Chinese Patent Office, Application No. 200810189484.3, entitled "Transmission Power Adjustment Method, Apparatus and System" The entire contents of which are incorporated herein by reference.

Technical field

The present invention relates to the field of communications, and in particular, to a method, device, and system for adjusting transmit power.

Background technique

In a cellular communication system, a CDMA (Code Division Multiple Access) system, etc., the coverage of a cell is generally related to the transmission power of a base station. When the transmission power is set too small, the coverage of the cell is small, and the mobile station can The area in which communication is performed is limited, which may cause the downlink quality of the mobile station to decrease. When the transmission power is set too large, it may cause interference to neighboring cell base stations or mobile stations, and increase the consumption of additional power, resulting in wasted system resources.

The prior art generally sets a fixed transmit power by means of link budget or coverage prediction simulation, thereby controlling the coverage area of the base station signal. In the process of implementing the present invention, the inventors have found that the prior art has at least the following problems: The actual complex wireless propagation path and the interference of other cells make the fixed transmission power set by the link budget or the coverage prediction simulation method not accurate.

Summary of the invention

Embodiments of the present invention provide a method, apparatus, and system for adjusting transmit power, which are capable of accurately configuring transmit power.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:

A method for adjusting transmit power, comprising: receiving a received power RSCP and a signal quality of a pilot channel reported by two or more mobile stations; and adjusting a transmit power according to the received RSCP and signal quality.

A transmission power adjustment device includes: a receiving unit, configured to receive a received power RSCP and a signal quality of a pilot channel reported by two or more mobile stations;

And a transmit power adjustment unit, configured to adjust transmit power according to RSCP and signal quality received by the receiving unit.

A transmission power adjustment system includes the above-mentioned transmission power adjustment device.

The method, device and system for adjusting the transmit power provided by the embodiment of the present invention adjust the transmit power according to the RSCP and the signal quality of the pilot channel reported by the mobile station, thereby accurately configuring the transmit power, and solving the prior art transmit power configuration. The exact problem. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set forth in the description of the claims Other drawings may also be obtained from these drawings without the use of creative labor.

FIG. 1 is a flowchart of a method for adjusting transmit power according to an embodiment of the present invention;

2 is a flowchart 1 of a method for adjusting transmit power according to another embodiment of the present invention; FIG. 3 is a flowchart 2 of a method for adjusting transmit power according to another embodiment of the present invention; FIG. FIG. 5 is a schematic structural diagram 1 of a transmitting power adjusting apparatus according to an embodiment of the present invention; FIG. 6 is a schematic structural diagram 2 of a transmitting power adjusting apparatus according to an embodiment of the present invention; 5 or FIG. 6 is a schematic structural diagram 1 of a transmission power adjusting unit 502 in a transmitting power adjusting apparatus according to an embodiment of the present invention;

FIG. 8 is a second schematic structural diagram of the transmit power adjustment unit 502 in the transmit power adjusting apparatus according to the embodiment of the present invention shown in FIG. 5 or FIG. 6;

FIG. 9 is a third schematic structural diagram of a transmit power adjustment unit 502 in a transmit power adjustment apparatus according to an embodiment of the present invention shown in FIG. 5 or FIG. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In order to solve the problem that the transmission power setting is inaccurate, the embodiment of the invention provides a method, a device and a system for adjusting the transmission power.

As shown in FIG. 1 , a method for adjusting transmit power according to an embodiment of the present invention includes: Step 101: Receive received signal (Received Signal Code Power, SCP) and signal quality of a pilot channel reported by two or more mobile stations;

In this step, the received information (RSCP and signal quality) may be reported by the mobile station periodically; Step 102, adjusting the transmit power according to the received RSCP and signal quality.

The method for adjusting the transmit power provided by the embodiment of the present invention can adjust the transmit power according to the RSCP and signal quality reported by two or more mobile stations, so that the transmit power setting is more accurate.

The method for adjusting the transmit power provided by the embodiment of the present invention can be applied to a wireless communication network, such as a GSM (Global System for Mobile communications) system, a CDMA (Code Division Multiple Access) system, A WCDMA (Wideband Code Division Multiple Access) system and an LTE (Long Time Evolution) system, etc., implement adjustment of base station transmit power.

In a wireless communication network, such as a cellular communication system such as CDMA or WCDMA, the mobile station can perform cell selection, cell reselection, or handover to other cells through measurement and evaluation of the signal reception quality of the pilot channel, thereby ensuring that Initiating a service in a cell that achieves a certain communication quality. If the set pilot channel power is too small, the area in which the mobile station can communicate may be correspondingly limited. Setting too large pilot power, in addition to causing consumption of unnecessary power, may also cause interference to neighboring areas (including adjacent base stations and mobile stations). 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 above pilot channel power, if the other channel power settings are too small, the downlink quality of the mobile station may also decrease; if other channel power settings are too large, power resources are wasted, and the neighboring area is also caused. interference.

It can be understood that, as a whole, the maximum transmit power of the base station is set too small, which may also affect the downlink quality of the mobile station, and it is difficult to meet the communication quality requirements of the user; the maximum transmit power of the base station is too large, and the power is wasted. At the same time of resources, it will also cause confusion to neighboring areas.

Therefore, the technical solution provided by the embodiment of the present invention can adjust not only the pilot channel power but also the transmit power including other channel power and the maximum transmit power of the base station.

In order to enable a person skilled in the art to understand the technical solutions provided by the embodiments of the present invention, the present invention will be described in detail below by way of specific embodiments.

As shown in FIG. 2, a method for adjusting transmit power according to another embodiment of the present invention includes: Step 201: A base station randomly selects two or more online mobile stations.

Step 202: The base station sends a measurement control command to the selected two or more online mobile stations, indicating that the two or more online mobile stations periodically report the RSCP and signal quality of the pilot channel.

The signal quality may include a Signal to Noise Ratio (SR), a Signal to Interfere Ratio interfered (SIR), or a Signal to Mask Ratio (SMR). In this embodiment, The signal quality can be specifically SNR, using E _c /N. Said.

In this embodiment, the base station may send a measurement control command to two or more online mobile stations, instructing the mobile station to periodically report RSCP and E _c /N _{0 of the} pilot channel according to the measurement control command; of course, the base station may also periodically The measurement control command is sent to two or more online mobile stations, and the mobile station is instructed to periodically report the RSCP and E _c /N _{0 of the} pilot channel.

The period in which the mobile station reports RSCP and E _c No can be set according to time, for example: the period can be set to 10 minutes; or the number of times can be set, for example: the period can be set to 10 times; It can also be set by other forms during use, and it is not used here for each case - repeat. Step 203, the base station receives two or more online mobile stations to periodically report pilot channel RSCP and E _c / N _0.

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

Step 2041: When the transmit power adjustment period arrives, the set of RSCP components and E _c /N obtained from step 203 respectively. In the set of components, the target RSCP and the target E _c /N ₀ satisfying the preset cumulative probability are obtained;

In this embodiment, the adjustment period of the transmit power may be set according to time, or may be set by the number of times. For example, the adjustment period of the transmit power may be a period in 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 tolerance requirement of the system. In this embodiment, the cumulative probability can be set to 95% (that is, 5% of the value can be tolerated), then the transmit power adjustment period timer expires. Or, when the number of times of the transmission power reaches the number of statistical thresholds, step 2041 can obtain the target RSCP and E _c N ₀ by the following steps:

First, the RSCP values in the set of RSCP are sorted from large to small, and the E _C N _Q values in the set of E _c /N ₀ are sorted from large to d;

Then, from the already arranged RSCP set and E _c N respectively. The 95%th data is obtained as the target RSCP and the target E _c N _{0 in the set} , for example: When 200 RSCPs are included in the arranged RSCP set, the 95% (190th) RSCP is selected from the RSCP set as the target RSCP; Target E _c /N ₀ can also be treated the same.

Of course, it can be understood that the above sorting can also be in the order of small to large, and the fault tolerance requirements can be set according to system requirements;

Step 2042: Compare the target RSCP and the target E _C /N _Q with a preset received power threshold (RSCP_threshold) and a signal quality threshold (E _c N ₀ _threshold ) of the pilot channel, and adjust the transmit power according to the comparison result. Among them, RSCP - threshold and E _c N. _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 transmit power is used as the pilot channel power as an example. Step 2042: Adjusting the transmit power according to the comparison result may include:

When the value compared with RSCP_threshold is greater than RSCP-threshold, the value compared with E _C N ₀ — threshold is greater than E _C NQ—threshold, the transmit power is lowered;

When the value compared with RSCP threshold is greater than RSCP-threshold, the value compared with E _C N ₀ — threshold is less than E _C N . ― threshold, increase the transmit power;

When the value compared with RSCP_threshold is less than RSCP-threshold, the value compared with E _C N ₀ — threshold is greater than E _C NQ—threshold, the original transmit power is kept unchanged;

When the value compared with RSCP_threshold is less than RSCP_threshold, the value compared with E _C N ₀ — threshold is less than E _C NQ—threshold, the transmit power is raised;

In this embodiment, the value compared with RSCP-threshold is the target RSCP, and the value compared with E _C N _Q -threshold is the target E _c N ₀ .

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

In actual use, the transmit power may also be the maximum transmit power, or the power of other channels (e.g., synchronization channel, paging channel, or traffic channel, etc.), or a combination of maximum transmit power, pilot channel power, and other channel power. In a wireless communication system (e.g., a CDMA or WCDMA system, etc.), the maximum transmit power or other channel power can be obtained by the power offset between the pilot channel power and the pre-set pilot channel power.

The method for adjusting the transmit power provided by the embodiment can obtain the adjustment information of the pilot channel power according to the RSCP and the E _C /N _Q periodically reported by the two or more mobile stations, and implement 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 two or more mobile stations, the adjusted pilot channel power can satisfy the downlink of multiple mobile stations. On the basis of link communication requirements, reduce the useless power Consumption, reducing interference to neighboring base stations or mobile stations;

In the wireless communication network, the maximum transmit power of the base station or other channels may be set to a certain power offset between the pilot channel and the pilot channel to form a consistent downlink coverage radius. Therefore, the technical solution provided in this embodiment may also be obtained according to the obtained The adjustment information of the pilot channel power, and the preset maximum transmit power or the power offset between the other channel power and the pilot channel, adjusting the maximum transmit power or other channel power, so that the adjusted maximum radiated power or other The channel power is more accurate, and the same can reduce the consumption of unnecessary power and reduce the interference to adjacent base stations or mobile stations on the basis of satisfying the downlink communication requirements of multiple mobile stations;

The technical solution provided by the embodiment of the present invention may also jointly adjust the transmit power of the base station, the maximum transmit power, and other channel powers, so that the adjusted transmit power can also satisfy the downlink of the mobile station. Communication requires, and reduces interference to neighboring base stations or mobile stations.

As shown in FIG. 3, another embodiment of the present invention further provides a method for adjusting transmit power, wherein steps 301 to 303 are similar to steps 201 to 203 shown in FIG. 2, and the other steps are different in:

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

Step 3041: When each mobile station reporting period arrives, the base station acquires the average received power of the pilot channel of each mobile station according to the received RSCP and E _C /N _Q by the following formulas (1) and (2), respectively. RSCP_avg and average signal quality E _C N _Q — avg;

RSCP

RSCP _ avg ( 1 )

i

Where j is the jth mobile station, i is the number of times the base station receives the RSCP reported by the jth mobile station when the reporting period arrives, and is the RSCP sum reported by the jth mobile station before the base station receives the previous time; 3⁄4 _^ |, = ^- ^ ( 2 ) where j is the jth mobile station, and i is the number of times the base station receives the E _C /NQ reported by the jth mobile station when the reporting period arrives, β ΙΝ. Receiving E _C /N ₀ and reported by the jth mobile station for the first time of the base station;

Step 3042, when the transmission power adjustment period arrives, respectively, from the set consisting of RSCP- avg and E _C NQ- avg set consisting of, obtaining cumulative probability set in advance to meet the goals and objectives RSCP- avg E _c N ₀ _avg;

For the specific implementation method, refer to step 2041 shown in FIG. 2, and details are not described herein. Step 3043, the target RSCP_avg and the target E _C N _Q — avg are respectively set with the preset RSCP—threshold and E _C N _Q - The threshold is compared, and the transmit power is adjusted according to the comparison result. For the specific implementation steps, refer to step 2042 shown in FIG. 2. In this embodiment, the value compared with the RSCP-threshold is the target RSCP_avg, and E _C N . _Q — The value of the comparison is compared to the target E _c /N ₀ _avg.

The method for adjusting the transmit power provided in this embodiment can obtain the adjustment information of the pilot channel power according to the RSCP and the E _C N _Q periodically reported by the two or more mobile stations, and implement the power of the pilot channel according to the adjustment information. Adjusting, so that the adjusted pilot channel power is more accurate. Since the pilot channel power is adjusted according to information reported by two or more mobile stations, the adjusted pilot channel power can be met under multiple mobile stations. On the basis of the requirements of the line link communication, the consumption of the useless power is reduced, and the interference to the adjacent base station or the mobile station is reduced;

In the wireless communication network, the maximum transmit power of the base station or other channels may be set to a certain power offset between the pilot channel and the pilot channel to form a consistent downlink coverage radius. Therefore, the technical solution provided in this embodiment may also be obtained according to the obtained The adjustment information of the pilot channel power, and the preset maximum transmit power or the power offset between the other channel power and the pilot channel, adjusting the maximum transmit power or other channel power, so that the adjusted maximum radiated power or other The channel power is more accurate, and it can also reduce the uselessness on the basis of satisfying the downlink communication requirements of multiple mobile stations. Power consumption, reducing interference to neighboring base stations or mobile stations;

The technical solution provided by the embodiment of the present invention can also jointly adjust the transmit power of the base station, the maximum transmit power, and other channel powers, so that the adjusted transmit power can also meet the downlink of the mobile station. Link communication requires and reduces interference to neighboring base stations or mobile stations.

As shown in FIG. 4, another embodiment of the present invention further provides a method for adjusting transmit power, wherein the steps 401 to 403 are similar to the steps 201 to 203 shown in FIG. 2, and the other steps are:

Step 404: The base station according to the RSCP and E _c /N received in step 403. , adjust the transmit power. In this embodiment, the following steps may be included:

Step 4041, when the mobile station each time the reporting period arrives, the base station has received RSCP and E _c / N. The average received power RSCP_avg and the average signal quality E _c N _Q _avg of the pilot channel of each mobile station are obtained. For the specific implementation, refer to step 3041 shown in FIG. 3, and details are not described herein.

Step 4042: Obtain current downlink load information of the base station, and each time the mobile station reporting period arrives, obtain the base station average downlink load station base station-load_avg according to the obtained base station downlink load information by using formula (3);

Base station -

Base station _ load _ avg =" ; ( 3 ) i

1 is the number of times the base station downlink load information is acquired when the reporting period arrives, and the base station _fo is the downlink load information of the base station acquired by the base station one time before;

Step 4043, according to the base stations - load_avg, RSCP - avg, and E _c N. _avg, obtaining the average signal quality of the pilot channel under the target load of the base station E _C N _Q — target, EcNO target(dB)=RSCP avg− RSSI—target, where RSSI_target is the total received power of the base station target load, RSSI—target = 10 * log (Io 丽(mW)+Ior- target (mW)); In this embodiment, step 4043 may specifically include:

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

RSSI(dBm) =RSCP_avg-EcNO_avg

Or RSSI(mW)=RSCP— avg/EcN0_avg ( 4 ) Obtain the total downlink interference power of the cell according to formula (5) lor:

Ior(dBm)=RSCP_avg-Ortho_correct+ 10 *log (base station _load_avg/CPICH Power Ratio) (5) where CPICH Power Ratio is the pilot channel power ratio and Ortho_correct is the pilot loss adjustment parameter;

According to the RSSI obtained by the formula (4), the lor 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 of the cell under the target load according to formula (7) Ior_target:

Ior_target(dBm)=Ior+ 10 * log (base station target load/base station_load_avg) (7) Iouw obtained according to formula (6), Ior_target obtained by equation (7), and the following formula (8), obtain base station target load Total received power RSSI_target:

RS SI_target= 10 * log(Io 丽(mW)+Ior_ target (mW)) (8) Obtain the average signal of the pilot channel under the target load of the base station according to the RSSI_target obtained by the formula (8) and the following formula (9) Quality EcN0_targe:

EcN0_target(dB)=RSCP_avg - RS SI_target (9) Step 4044, when the transmit power adjustment period arrives, from the set consisting of RSCP_avg obtained in step 4041 and the set of E _C NQ-target obtained in step 4043 Obtain a target RSCP_avg and a target E _c N that satisfy a preset cumulative probability. For the specific implementation steps, refer to step 2041 shown in Figure 2, and details are not described herein.

Step 4045, comparing the target RSCP_avg and the target E _c N _Q _target with a preset RSCP-threshold and E _C N _Q -threshold, and adjusting the transmit power according to the comparison result, For the implementation steps of the body, refer to step 2042 shown in FIG. 2. In this embodiment, the value compared with the RSCP threshold is the target RSCP_avg, and the value compared with the E _C N _Q -threshold is the target. E _c N ₀ _targeto

The method for adjusting the transmit power provided by this embodiment can obtain the RSCP_avg of each mobile station and the E _C N _Q — target of the base station target load according to RSCP and E _c N ₀ periodically reported by two or more mobile stations. According to the RSCP - avg and E _c N. The _target obtains the adjustment information of the pilot channel power, and adjusts the pilot channel power according to the adjustment information, so that the adjusted pilot channel power can adapt to the change of the base station application environment, and the pilot channel power setting is more accurate, because The pilot channel power is adjusted according to information reported by two or more mobile stations, so the adjusted pilot channel power can reduce the useless power on the basis of satisfying the downlink communication requirements of multiple mobile stations. Consumption, reducing interference to neighboring base stations or mobile stations; in a wireless communication network, the maximum transmit power of the base station or other channels can be set to a certain power offset by setting a certain power offset with the pilot channel, so that a uniform downlink coverage radius is formed, so The technical solution provided in this embodiment may further be based on the obtained adjustment information of the pilot channel power, and the preset maximum transmit power or power offset between the other channel power and the pilot channel, and the maximum transmit power or other channel. The power is adjusted so that the adjusted maximum radiated power or other letter The channel power can also adapt to changes in the base station application environment, and can also reduce the consumption of unnecessary power and reduce the interference to adjacent base stations or mobile stations on the basis of satisfying the downlink communication requirements of multiple mobile stations; The technical solution provided by the embodiment of the present invention can also jointly adjust the base station transmit power, such as the pilot channel power, the maximum transmit power, and other channel powers, so that the adjusted transmit power can also satisfy the downlink of the mobile station. Road communication requires, and reduces the interference to adjacent base stations or mobile stations.

In the above embodiment, the method for adjusting the transmit power provided by the embodiment of the present invention may further include the step of smoothing or filtering the obtained average data, where the average data may be the RSCP_avg obtained in step 3041 shown in FIG. And E _c N. _avg, steps may be as shown in FIG. 44041 and 4042 acquired RSCP- avg, E _c N ₀ _avg and base - load_avg. Through this step, the obtained average data can be made more accurate, thereby further ensuring the accuracy of the transmission power adjustment. As shown in FIG. 5, an embodiment of the present invention further provides a transmission power adjustment apparatus, including: a receiving unit 501, configured to receive a received power RSCP and a signal quality of a pilot channel reported by two or more mobile stations;

The transmit power adjustment unit 502 is configured to adjust the transmit power according to the RSCP and the signal quality received by the receiving unit 501.

The transmit power may include pilot channel power and/or maximum transmit power.

Further, as shown in FIG. 6, the apparatus for adjusting the transmit power may further include:

The selecting unit 503 is configured to randomly select two or more 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 selecting unit 503, and instruct the two or more online mobile stations to report the RSCP and the signal quality of the pilot channel.

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

The first obtaining sub-unit 5021 is configured to: when the transmit power adjustment period arrives, obtain a target RSCP and a target signal quality that meet a preset cumulative probability from a set of RSCP components and a set of signal quality components respectively acquired by the receiving unit 501;

The first adjusting sub-unit 5022 is configured to compare the target RSCP and the target signal quality acquired by the first acquiring sub-unit 5021 with the received power threshold and the signal quality threshold of the preset pilot channel, respectively, and adjust the transmitting power according to the comparison result.

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

a second obtaining sub-unit 5023, configured to acquire an average received power RSCP_avg and an average signal quality of a pilot channel of each mobile station according to the RSCP and the signal quality that the receiving unit 501 has received each time the mobile station reporting period arrives;

The third obtaining subunit 5024 is configured to: when the transmit power adjustment period arrives, obtain a target that satisfies the preset cumulative probability by using a set of RSCP_avg and a set of average signal quality components acquired by the second obtaining subunit 5023. RSCP_avg and target average signal quality;

a second adjusting sub-unit 5025, configured to separately acquire the target RSCP_avg and the target average signal quality acquired by the third acquiring sub-unit 5024 and the received power threshold and signal quality of the preset pilot channel The thresholds are compared, and the transmission power is adjusted according to the comparison result.

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

The fourth obtaining sub-unit 5026 is configured to obtain an average received power RSCP_avg and an average signal quality of the pilot channel of each mobile station according to the RSCP and the signal quality that the receiving unit 501 has received each time the mobile station reporting period arrives;

The fifth obtaining sub-unit 5027 is configured to obtain the current downlink load information of the base station, and obtain the base station average downlink load base station-load_avg according to the acquired downlink load information of the base station each time the mobile station reporting period arrives;

The sixth obtaining subunit 5028 is configured to obtain, according to the base station load avg acquired by the fifth obtaining subunit 5027, and the RSCP_avg and the average signal quality acquired by the fourth acquiring subunit 5026, obtain an average of pilot channels under the target load of the base station. Signal quality;

a seventh obtaining subunit 5029, configured to: when the transmit power adjustment period arrives, the set of RSCP_avg acquired from the fourth obtaining subunit 5026 and the pilot channel of the base station target load acquired by the sixth obtaining subunit 5028 Obtaining, in a set of average signal quality components, a target RSCP_avg that satisfies a preset cumulative probability and an average signal quality of a pilot channel under a target load of the target base station; a third adjustment subunit 50210, configured to acquire the seventh acquisition subunit 5029 The target RSCP-avg and the average signal quality of the pilot channel under the target base station target load are respectively compared with the preset received power threshold and the signal quality threshold of the pilot channel, and the transmission power is adjusted according to the comparison result.

It should be noted that, in actual use, the multiple units divided by the transmitting power adjusting apparatus provided in the embodiment of the present invention as shown in FIG. 5 to FIG. 9 may also have one and the plurality of units. Modules or functional unit implementations with similar functions are not described here.

The apparatus for adjusting the transmit power provided by the embodiment can obtain the adjustment information of the pilot channel power according to the RSCP and the signal quality periodically reported by the two or more mobile stations, and adjust the power of the pilot channel according to the adjustment information. The adjusted pilot channel power can be adapted to the change of the base station application environment, and the pilot channel power setting is more accurate, since the pilot channel power is root According to the information reported by two or more mobile stations, the adjusted pilot channel power can reduce the consumption of unnecessary power and reduce the neighboring base stations on the basis of satisfying the downlink communication requirements of multiple mobile stations. Or the interference of the mobile station; in the wireless communication network, the maximum transmit power of the base station or other channels may be set to a certain power offset between the pilot channel and the pilot channel to form a consistent downlink coverage radius. Therefore, the technology provided in this embodiment The solution may also adjust the maximum transmit power or other channel power according to the obtained adjustment information of the pilot channel power, and the preset maximum transmit power or the power offset between the other channel power and the pilot channel, so that the adjusted The maximum radiated power or other channel power can also adapt to changes in the base station application environment, and can also reduce the consumption of useless power and reduce the use of adjacent base stations or on the basis of satisfying the downlink communication requirements of multiple mobile stations. The interference of the mobile station; of course, the technical solution provided by the embodiment of the present invention The base station transmit power, such as the pilot channel power, the maximum transmit power, and other channel powers, may be jointly adjusted, so that the adjusted transmit power can also meet the downlink communication requirements of the mobile station, and the adjacent base stations are reduced. Or interference from the mobile station.

The embodiment of the present invention further provides a transmission power adjustment system, which includes the adjustment device of the transmission power as shown in FIG. 5 to FIG. It will be appreciated that mobile stations or other network devices may also be included.

The adjustment system of the transmit power provided by the embodiment can obtain the adjustment information of the pilot channel power according to the RSCP and the signal quality periodically reported by the two or more mobile stations, and adjust the power of the pilot channel according to the adjustment information, The adjusted pilot channel power can be adapted to the change of the base station application environment, and the pilot channel power setting is more accurate. Since the pilot channel power is adjusted according to information reported by two or more mobile stations, the adjusted The pilot channel power can reduce the consumption of useless power and reduce the interference to neighboring base stations or mobile stations on the basis of satisfying the downlink communication requirements of multiple mobile stations; in the wireless communication network, the maximum transmit power of the base station Or the other channel may be configured with a certain power offset between the channel and the pilot channel to form a consistent downlink coverage radius. Therefore, the technical solution provided in this embodiment may further be adjusted according to the obtained pilot channel power and preset. Maximum transmit power or other channel power and work between pilot channels Rate offset, adjust the maximum transmit power or other channel power, so that the adjusted maximum The radiated power or other channel power can also adapt to changes in the base station application environment, and can also reduce the consumption of useless power and reduce the neighboring base station or mobile station on the basis of satisfying the downlink communication requirements of multiple mobile stations. The interference provided by the embodiment of the present invention can also jointly adjust the transmit power of the base station, the maximum transmit power, and other channel powers, so that the adjusted transmit power can also satisfy the mobile The downlink communication of the station requires and reduces interference to neighboring base stations or mobile stations.

A person skilled in the art can understand that all or part of the steps of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium, such as ROM/RAM, magnetic. Disc or CD.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Claim

A method for adjusting transmit power, characterized in that it comprises:

Receiving received power RSCP and signal quality of pilot channels reported by two or more mobile stations; adjusting transmit power according to the received RSCP and signal quality.

2. The method according to claim 1, wherein the adjusting the transmit power according to the received RSCP and signal quality comprises:

When the transmit power adjustment period arrives, obtain a target RSCP and a target signal quality that satisfy a preset cumulative probability from the set of the RSCP and the set of the signal quality components respectively; and the target RSCP and the target signal quality And comparing with the received power threshold and the signal quality threshold of the preset pilot channel respectively, and adjusting the transmission power according to the comparison result.

3. The method according to claim 1, wherein the adjusting the transmit power according to the received RSCP and signal quality comprises:

Obtaining an average received power RSCP_avg and an average signal quality of a pilot channel of each mobile station according to the received RSCP and signal quality;

When the transmit power adjustment period arrives, the target RSCP_avg and the target average signal quality satisfying the preset cumulative probability are respectively obtained from the set of the RSCP_avg and the set of the average signal quality respectively;

The target RSCP_avg and the target average signal quality are respectively compared with a preset received power threshold and a signal quality threshold of the pilot channel, and the transmit power is adjusted according to the comparison result.

The method according to claim 1, wherein the adjusting the transmit power according to the received RSCP and signal quality comprises:

Obtaining the current downlink load information of the base station, and acquiring the base station average downlink load base station - load_avg according to the obtained downlink load information of the base station;

Obtaining a base station target load according to the base station _load_avg, SCP_avg, and average signal quality Average signal quality of the pilot channel;

When the transmit power adjustment period arrives, obtain a target RSCP_avg and a target that satisfy a preset cumulative probability from a set consisting of the set of RSCP_avg and 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 the target load of the base station; performing average signal quality of the target RSCP_avg and the pilot channel under the target base station target load, respectively, with a preset received power threshold and signal quality threshold of the pilot channel Compare, adjust the transmit power based on the comparison result.

The method according to claim 4, wherein when the signal quality is E _c /N ₀ and the average signal quality is an average signal to noise ratio E _C N _Q — avg, Base station _load_avg, RSCP-avg and average signal quality, obtaining the average signal quality of the pilot channel under the target load of the base station includes:

Average signal quality of the pilot channel under the target load of the base station EcNO_target(dB)=RSCP_avg- RS SI_ target;

The RSSI_target is the total received power of the base station target load, RSSI_target = 10 * log (Iouw(mW)+Ior_target (mW)), the louw is useless signal interference power, louw (mW) =RSSI(mW)- Ior(mW), the lor-target is the total downlink interference power of the cell under the target load of the base station, and Ior target (dBm) = Ior+10*log (base station target load/base station_load_avg).

The method according to any one of claims 2 to 5, wherein the adjusting the transmission power according to the comparison result comprises:

And 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, the transmit power is lowered; and/or,

Transmitting the transmit power 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 less than the signal quality threshold; and/or,

And when the value compared with the received power threshold is less than the received power threshold, and the value compared with the signal quality threshold is greater than the signal quality threshold, the original transmit power is kept unchanged; and/or, when a value compared to the received power threshold is less than the received power threshold, and the signal quality When the value of the threshold comparison is less than the signal quality threshold, the transmit power is raised;

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; or

The value compared with the received power threshold is the target RSCP_avg, and the value compared with the signal quality threshold is the target average signal quality; or

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.

The method according to any one of claims 1 to 5, characterized in that the transmission power comprises pilot channel power and / or maximum transmission power.

The method according to any one of claims 1 to 5, further comprising: randomly selecting two or more online mobile stations;

And transmitting, to the two or more online mobile stations, a measurement control command, instructing the two or more online mobile stations to periodically report RSCP and signal quality of the pilot channel.

9. A device for adjusting transmit power, characterized by comprising:

a receiving unit, configured to receive a received power RSCP and a signal quality of a pilot channel reported by two or more mobile stations;

And a transmit power adjustment unit, configured to adjust the transmit power according to the RSCP and the signal quality received by the receiving unit.

10. The device according to claim 9, further comprising:

a unit for randomly selecting two or more online mobile stations;

And a sending unit, configured to send, to the two or more online mobile stations selected by the selecting unit, a measurement control command, to indicate that the two or more online mobile stations report the RSCP and the signal quality of the pilot channel.

The device according to claim 9 or 10, wherein the transmit power adjustment unit comprises:

a first acquiring subunit, configured to: when the transmit power adjustment period arrives, obtain a set of RSCP components and a set of signal quality components respectively obtained from the receiving unit, and obtain a pre-set cumulative sum Rate of target RSCP and target signal quality;

And a first adjusting subunit, configured to compare the target RSCP and the target signal quality acquired by the first acquiring subunit with a received power threshold and a signal quality threshold of the preset pilot channel, respectively, and adjust the transmit power according to the comparison result.

a second acquiring subunit, configured to acquire an average received power RSCP avg and an average signal quality of a pilot channel of each mobile station according to RSCP and signal quality that the receiving unit has received each time the mobile station reporting period arrives ;

a third acquiring subunit, configured to: when the transmit power adjustment period arrives, acquire a target RSCP that satisfies a preset cumulative probability from a set of RSCP_avg and a set of average signal quality components respectively acquired by the second acquiring subunit – avg and target average signal quality;

The second adjustment subunit is further configured to compare the target RSCP_avg and the target average signal quality acquired by the third acquiring unit with a preset power channel threshold and a signal quality threshold of the preset pilot channel, and adjust the transmission according to the comparison result. power.

13. The apparatus according to claim 9 or 10, wherein the transmit power adjustment unit comprises:

And a fourth acquiring subunit, configured to acquire an average received power RSCP avg and an average signal quality of a pilot channel of each mobile station according to the RSCP and the signal quality that the receiving unit has received each time the mobile station reporting period arrives ;

The fifth obtaining sub-unit is configured 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 acquired downlink load information of the base station each time the mobile station reporting period arrives;

a sixth obtaining subunit, configured to acquire, according to the base station_load_avg acquired by the fifth acquiring subunit, and the RSCP_avg and the average signal quality acquired by the fourth acquiring subunit, to acquire a pilot under a target load of the base station Average signal quality of the channel; The seventh obtaining subunit is further configured to: when the transmit power adjustment period arrives, the set of RSCP_avg respectively obtained from the fourth acquiring subunit and the guide of the base station target load acquired by the sixth obtaining subunit Obtaining, in a set of average signal quality components of the frequency channel, a target RSCP_avg that satisfies a preset cumulative probability and an average signal quality of a pilot channel under a target load of the target base station;

The third adjustment subunit is further configured to: use the target RSCP_avg acquired by the seventh acquiring subunit and the average signal quality of the pilot channel under the target base station target load, respectively, and a preset receiving power threshold of the pilot channel Compare with the signal quality threshold and adjust the transmit power based on the comparison result.

An adjustment system for transmitting power, characterized by comprising the transmission power adjusting device according to any one of claims 9 to 13.