WO2010078713A1

WO2010078713A1 - Home base station and transmit power setting method thereof

Info

Publication number: WO2010078713A1
Application number: PCT/CN2009/001560
Authority: WO
Inventors: 李男
Original assignee: 中国移动通信集团公司
Priority date: 2009-01-08
Filing date: 2009-12-25
Publication date: 2010-07-15
Also published as: CN101778463A; CN101778463B

Abstract

A home base station and a transmit power setting method thereof are provided, they are used for depressing the interference on macro user equipments and other home user equipments due to the home base station. The transmit power setting method comprises: the home base station receives the measurement results reported by home user equipments about the received power of the pilot/reference signal of the non-service base stations (S201); and the home base station sets the transmit power by reference to the received measurement results (S202). By applying the present invention, the interference on the macro user equipments and other home user equipments due to the home base station can be effectively depressed without changing protocol.

Description

Home base station and transmission power setting method thereof

The present invention relates to the field of mobile communications, and in particular, to a home base station and its transmit power setting technique. Background technique

Home NodeB (HNB), also known as Femto Cell/Femto NodeB, Pico Cell/Pico NodeB, etc., is a very low transmit power communication base station for indoor scenes, users It can be purchased at will and installed by itself, usually placed on an indoor table or on the ground to provide wireless access for home users. In general, the transmit power of the home base station is a relatively constant power value that is adjusted only when its placement position changes or if the deployment of nearby macro base stations changes significantly. The home base station extends the indoor coverage of the mobile signal at a lower cost, satisfies the user's demand for high-speed data services in an indoor scenario, and can comprehensively provide various traditional fixed network services (such as broadband Internet services and fixed voice services). .

Due to the arbitrariness and uncertainty of the deployment of the home base station, interference between the home base station and the macro base station (for example, Base Station, NodeB ^ eNodeB, collectively referred to as Macro NodeB) and between the home base stations are unavoidable. To facilitate the distinction between user equipment access to the home base station is called home terminals (Home User Equipment, Home UE) , access to the macro base station is called a user equipment between the macro terminal (Macro User Equipment, Macro UE) 0 of the base station Schematic diagram of interference, as shown in Figure 1, there are mainly the following types of interference between the home base station and the macro base station and between the home base stations: Home base station HNB1 interference macro terminal Macro UE, home terminal Home UE interference macro base station Macro NodeB, macro base station The Macro NodeB interferes with the home terminal Home UE, the macro terminal Macro UE interferes with the home base station HNB1, the home base station HNB 1 and the home terminal (referred to as other home terminals) that interferes with accessing other home base stations, and the home terminal Home UE interferes with the non-serving home base station HNB2. It can be seen that how to reduce the interference of the home base station to the macro terminal and other home terminals has become one of the problems to be solved in the prior art. Summary of the invention

The present invention provides a home base station and a method for setting a transmission power thereof for reducing interference generated by a home base station to a macro terminal and other home terminals.

The method for setting a transmit power of a home base station provided by the present invention includes:

The home base station receives the measurement result of the pilot/reference signal received power of the non-serving base station reported by the home terminal;

The home base station sets the transmission power with reference to the received measurement result.

The home base station provided by the present invention includes:

a receiving unit, configured to receive a measurement result of the pilot/reference signal received power of the non-serving base station reported by the home terminal;

And a power setting unit, configured to set a transmit power by referring to the received measurement result.

The home base station and the method for setting the transmit power thereof provided by the present invention, the transmit power of the home base station no longer adopts a relatively constant power value, but effectively utilizes the measurement and reporting of the pilot/reference signal received power of the non-serving base station by the home terminal, and the family The base station uses the measurement result reported by the home terminal as a reference for setting the transmit power of the base station. The invention does not need to modify the protocol, and is highly implementable. The home base station sets the transmit power of the base station by referring to the non-serving base station pilot/reference signal received power reported by the home terminal, thereby effectively reducing the home base station to the macro terminal and other home terminals. The generated interference can ensure that the transmission power of the home base station is improved under the premise of controlling the interference generated by the home base station to other base stations, which is beneficial to improving the user experience of the home terminal. DRAWINGS

1 is a schematic diagram of interference between base stations in the prior art;

2 is a flowchart of a method for setting a transmit power of a home base station according to an embodiment of the present invention;

3A is a schematic diagram of an implementation principle in Embodiment 1 of the present invention;

3B is a schematic diagram of a distance between a home base station and a macro base station according to an embodiment of the present invention;

4 is a flowchart of a method for setting a transmit power of a home base station according to Embodiment 1 of the present invention; 5 is a flowchart of a method for setting a transmit power of a home base station according to Embodiment 2 of the present invention; FIG. 6 is a block diagram of a transmit power setting device set in a home base station according to an embodiment of the present invention; FIG. 7 is a power setting unit according to an embodiment of the present invention; a possible structural block diagram;

8 is a block diagram of a possible structure of a first determining subunit in an embodiment of the present invention;

FIG. 9 is a block diagram of another possible structure of a power setting unit according to an embodiment of the present invention. Detailed ways

An embodiment of the present invention provides a method for setting a transmit power of a home base station. As shown in FIG. 2, the method includes the following steps:

The S20K home base station receives the measurement result of the received power of the non-serving base station pilot/reference signal reported by the home terminal under the jurisdiction;

S202. The home base station sets the transmit power by referring to the received measurement result.

In the embodiment of the present invention, the transmit power of the home base station no longer adopts a relatively constant power value, but effectively measures and reports the pilot/reference signal received power of the non-serving base station by the home terminal under the control of the home base station, according to the measurement result. The transmit power is set, thereby reducing the interference generated by the home base station on the macro terminal and other home terminals. The home base station described in the embodiments of the present invention includes, but is not limited to, an HNB, a Femto CelK Femto NodeB Pico Cell, and a Pico NodeB.

The technical solutions provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Embodiment 1

The technical solution adopted in this embodiment includes: the home base station determines the distance between the home base station and the non-serving base station according to the measurement result of the non-serving base station pilot/reference signal received power reported by the home terminal, and refers to the home base station and the non-serving The distance between the base stations sets the transmit power.

First, the basic implementation principle of this embodiment will be described. For the distance between the home base station and the macro base station, as shown in FIG. 3A, the macro base station is used as a center, and different distance domain values set between the home base station and the macro base station can obtain a plurality of concentric circles, thereby dividing the One area, the second area, the third area, and so on. The receiving signal to noise ratio calculation method of the macro terminal is as shown in the formula [1]: SIR

+ IJ [1] where S/R _£ is the received signal-to-noise ratio of the macro terminal, and the layer is the transmit power of the macro base station.

PL is the path loss from the macro base station to the macro terminal, P _tx is the transmit power of the home base station, the path loss of the home base station to the macro terminal, the noise power of the macro terminal, / the interference of other base stations to the macro terminal power.

When the distance between the home base station and the macro base station is small (for example, the home base station is placed in the first area), since the distance between the macro base station and the home base station to the macro terminal is relatively close, the PL _{B MUE} is

^ _S „. _{W£ is} relatively close. In this case, since the transmission power of the macro base station is much larger than the transmission power of the home base station, the interference generated by the home base station to the macro terminal causes the reception signal to noise ratio of the macro terminal to decrease less. The home base station can set a relatively large transmission power; when the distance between the home base station and the macro base station is large (for example, the home base station is placed in the third area), the macro is farther from the macro base station but closer to the home base station For the terminal, the difference between PL and PL is relatively large (PL PL ), that is, the difference between the path loss of the home base station to the macro terminal and the path loss of the macro base station to the macro terminal is far greater than between the macro base station and the home base station. The difference between the transmit power, the interference generated by the home base station to the macro terminal causes the macro signal to reduce the received signal-to-noise ratio of the macro terminal, and the home base station should set a relatively small transmit power. Similarly, when the distance between the home base stations When it is small, the home base station can set a relatively large transmit power; when the distance between the home base station and the macro base station is large, the home base station should be set relatively small. Transmission power.

In the above process, the macro base station is used as the center, and the different distance thresholds set between the home base station and the macro base station are used to obtain a plurality of concentric circles. As shown in FIG. 3A, the coverage of the macro base station includes the first area, The second area and the third area, wherein the third area is an edge area within the coverage of the macro base station. When the distance between the home base station and the macro base station is far, and the home base station is outside the coverage of the macro base station, as shown in FIG. 3B The fourth area is an area outside the coverage of the macro base station. At this time, since the distance between the home base station and the macro base station is very far, the reference signal receiving power of the macro base station is very low. At this time, the home base station can be considered to be located in an island environment. At this time, when the transmission power of the home base station is large, the base station is not The station caused interference. Therefore, in the embodiment of the present invention, when the transmit power of the home base station is set, according to the measurement result of the pilot/reference signal received power of the non-serving base station reported by the home terminal, the maximum pilot/reference of the non-serving base station reported by the home terminal When the signal receiving power is less than the preset threshold, the path loss of the home base station to the macro terminal is greater than the path loss of the macro base station to the macro terminal, and the transmit power of the home base station is smaller than the transmit power of the macro base station, and the home base station can be set larger. The transmit power, for example, the transmit power of the home base station is set to the maximum transmit power, wherein the preset gate P艮 value in the embodiment of the present invention may be determined according to the cell edge reference signal/pilot received power planned by the macro base station network, for example, The Wide-band Code Division Multiple Access (WCDMA) system can define a preset threshold as the dominant frequency received power is lower than -105dBm.

Since the coverage of the home base station is relatively small, the distance between the home base station and the macro base station or other home base station can be approximately determined by the distance between the home terminal and the non-serving base station under the jurisdiction of the home base station. As shown in FIG. 4, the method for setting a transmit power of a home base station provided in Embodiment 1 includes the following steps:

S401. The home base station receives a measurement result of the pilot/reference signal received power of the non-serving base station reported by the home terminal.

In the prior art standard, the home terminal performs measurement and reporting of the non-serving base station pilot/reference signal received power for cell handover or inter-cell reselection; wherein, the home base station is generally controlled by multiple household terminals, and each The non-serving base station measured by the home terminal is also generally multiple, including a macro base station, or other home base station, or a macro base station and other home base stations; the measurement result includes the pilot terminals of the home base station to the non-serving base station pilots. / Reference signal received power measurement.

S402. The home base station determines, according to the received measurement result, a distance between the home base station and the non-serving base station, and specifically includes the following steps:

a. Extracting, from the measurement results, all measured values of the pilot/reference signal received power for each non-serving base station;

b. Combining all the measured values of the pilot/reference signal received power of each non-serving base station to obtain a combined effective value; c. determining, according to the combined effective value of the pilot/reference signal received power of each non-serving base station and the reference transmit power of the non-serving base station, the path loss of the home base station to each non-serving base station; d, according to the home base station to each The path loss of the non-serving base station determines the distance between the home base station and each of the non-serving base stations.

S403. The home base station sets the transmit power by referring to the determined distance between the home base station and the non-serving base station.

The home base station refers to the determined distance between the home base station and the non-serving base station, and can set the transmission power in consideration of factors such as the coverage requirement of the home base station.

Preferably, in S402, the home base station measures the received power of the pilot/reference signal for each non-serving base station for each home terminal, and smoothes the measured value in order to reduce the influence of the small-scale fading on the instantaneous measured value. Processing, the smoothing method adopted for each measurement value of the pilot/reference signal received power of each non-serving base station is as shown in the formula [2]:

PCCPCH^ {η) = α · PCCPCH^ ("-1) + (1 - or) . PCCPCH^ (") [2] where,

a smoothed rms value obtained by smoothing the current sub-measurement of the pilot/reference signal received power of any non-serving base station by any home terminal; PCCPCH^n - l) receiving power for the pilot/reference signal The smoothed rms value obtained after the previous measurement is smoothed; CCPO3⁄4 _CT (the current sub-measurement of the received power of the pilot/reference signal; "is the set weighting factor and 0 ≤ cr ≤ l.

All measurement values of the pilot/reference signal received power of each non-serving base station by the home base station may be combined by maximum ratio combining, equal gain combining or selective combining, and the combined processing method adopted is as shown in formula [3]. :

The PCCPCH^ is a combined effective value obtained by combining all the measured values of the pilot/reference signal received power of any non-serving base station; N is a reported value of the pilot/reference signal received power of the non-serving base station. Number of home terminals; for the i-th home terminal, PCCPCH^i") The measured value of the pilot/reference signal received power of the non-serving base station reported by the i-th home terminal; ", is the weighting factor of the i-th home terminal. If the alpha of the i-th home terminal is equal to the signal-to-noise ratio of the i-th home terminal pilot/reference signal, the maximum ratio combining mode is adopted, and if all the home terminals are 1, the equal gain combining mode is adopted, α, Other values can also be taken. It should be noted that, before the home base station performs the combining process, if the measured value of the pilot/reference signal received power of each non-serving base station for each home terminal is smoothed according to the formula [2], a smoothed effective value is obtained. Then, CCPCH^^) in the formula [3] is a smoothed effective value obtained by smoothing the measured value of the pilot/reference signal received power of the non-serving base station reported by the i-th home terminal.

The home base station can calculate the path loss of the home base station to each non-serving base station according to the combined effective value of the pilot/reference signal received power of each non-serving base station and the reference transmit power of the non-serving base station, according to the path loss and utilizing the propagation. The model determines the distance between the two. Since the number of non-serving base stations is generally plural, the distance between the home base station and the non-serving base station generally includes a plurality of distances between the home base station and each non-serving base station.

The propagation model may select a free space propagation model, or other propagation models such as a hata model, a cost231 model, a vehicle model, and the like. The path loss is generally a power function of distance. In the free space propagation model, the path loss is proportional to the power of the distance. In urban cells, the path loss is approximately proportional to the distance of 2.7 ~ 3.5 power; The linear path loss of the line of sight is approximately proportional to the distance of 1.6 ~ 1.8 power; the path loss of the ordinary building block on the wave propagation path is approximately proportional to the distance of 3 - 5 power; there are tall buildings on the wave propagation path The path loss of the block is approximately proportional to the 4 to 6 power of the distance. The propagation model may be selected by a ray tracing method, and an appropriate propagation model may be selected according to the actual deployment scenario of the home base station.

In S403, if the number of the non-serving base stations includes multiple, the minimum distance is used as a reference for setting the transmission power, that is, referring to the home base station and each non-determination for the plurality of distances between the determined home base station and each non-serving base station. The minimum distance between the serving base stations sets the transmit power. The specific setting method is as shown in formula [4]:

P _tx = I _mm + Pathloss + ACIR - AP [4] Wherein, the transmission power of the home base station; / the maximum allowable interference power of the non-serving base station corresponding to the minimum distance; the path loss determined according to the minimum distance, specifically, the path can be determined according to the minimum distance and using the propagation model selected in S302 Loss; C/R is the adjacent channel interference power ratio between the non-serving base station corresponding to the minimum distance of the home base station, determined by the adjacent channel leakage power ratio (ACLR) and the adjacent channel selectivity parameter (ACS). If the frequencies are the same, then ^: /R takes the value 0; Δ is the set interference power adjustment value, ΔΡ can be set to 0

Preferably, the home base station simultaneously refers to a channel quality indicator (CQI) reported by the home terminal when setting the transmit power, wherein the CQI includes a recommended modulation mode (RMF) and a recommended transport block size (RTBS). In general, the transmit power of the home base station can be appropriately reduced when the CQI is better, and the transmit power of the home base station can be appropriately increased when the CQI is poor.

In this embodiment, the home base station effectively utilizes the measurement and uplink of the pilot/reference signal received power of the non-serving base station by the home terminal, and the distance between the home terminal and the non-serving base station can be determined because the coverage of the home base station is relatively small. Approximating the distance between the home base station and the non-serving base station, determining the distance between the home base station and the non-serving base station according to the measurement result reported by the home terminal, and setting the transmission power by referring to the distance between the home base station and the non-serving base station, thereby The interference generated by the home base station on the macro terminal and other home terminals is effectively reduced.

Embodiment 2

The technical solution used in this embodiment includes: the home base station determines the path loss of the home base station to the non-serving base station according to the measurement result of the non-serving base station pilot/reference signal received power reported by the home terminal, and refers to the home base station to the non-serving The path loss of the base station sets the transmit power.

Since the coverage of the home base station is relatively small, the path loss of the home base station to the macro base station or other home base station can be approximately determined by the path loss of the home terminal to the non-serving base station under the jurisdiction of the home base station. As shown in FIG. 5, the method for setting a transmit power of a home base station provided in Embodiment 2 includes the following steps:

S501. The home base station receives a measurement result of the pilot/reference signal received power of the non-serving base station reported by the home terminal. 5502. The home base station determines, according to the received measurement result, a path loss of the home base station to the non-serving base station, where the method includes the following steps:

b. Combining all the measured values of the pilot/reference signal received power of each non-serving base station to obtain a combined effective value;

c. Determine the path loss of the home base station to each non-serving base station according to the combined effective value of the pilot/reference signal received power of each non-serving base station and the reference transmit power of the non-serving base station.

S503. The home base station sets a transmit power according to the determined path loss of the home base station to the non-serving base station.

The home base station refers to the determined path loss of the home base station to the non-serving base station, and can set the transmission power in consideration of factors such as the coverage requirement of the home base station.

Preferably, in S502, the home base station measures the received power of the pilot/reference signal for each non-serving base station for each home terminal, and smoothes the measured value in order to reduce the influence of the small-scale fading on the instantaneous measured value. Processing, the smoothing method adopted for each measurement value of the pilot/reference signal received power of each non-serving base station is also shown in the formula [2], and will not be described again.

All measurement values of the pilot/reference signal received power of each non-serving base station by the home base station may be combined by maximum ratio combining, equal gain combining or selective combining, and the combined processing method is also as shown in formula [3]. Show, no longer repeat.

The home base station can calculate the path loss of the home base station to each non-serving base station according to the combined effective value of the pilot/reference signal received power of each non-serving base station and the reference transmit power of the non-serving base station, since the non-serving base station is generally Multiple, so the path loss from the home base station to the non-serving base station generally includes multiple path losses from the home base station to each non-serving base station.

In S503, if the non-serving base station includes multiple, the multiple path loss for the determined home base station to each non-serving base station is generally used as a reference for setting the transmitting power with the minimum path loss, and the preset path loss is queried. The corresponding relationship of the transmit powers, and the transmit power of the home base station is set according to the query result. Correspondence between path loss and transmit power can be used as a correspondence list The way it is given can also be given in the form of a functional relationship.

In this embodiment, the home base station effectively utilizes the measurement and reporting of the pilot/reference signal received power of the non-serving base station by the home terminal. Since the coverage of the home base station side is relatively small, the path loss of the home terminal to the non-serving base station can be approximated. The path loss of the home base station to the non-serving base station determines the path loss of the home base station to the non-serving base station according to the measurement result reported by the home terminal, and sets the transmission power by referring to the path loss of the home base station to the non-serving base station, thereby effectively reducing the home base station. Interference with macro terminals and other home terminals.

Based on the same technical concept, an embodiment of the present invention provides a transmitting power setting device that is disposed in a home base station. As shown in FIG. 6, the transmitting power setting device includes:

The receiving unit 601 is configured to receive a measurement result of the pilot/reference signal received power of the non-serving base station reported by the home terminal;

The measurement result includes a measured value of the pilot/reference signal received power of the non-serving base station by each of the home terminals under the jurisdiction of the home base station;

The power setting unit 602 is configured to set the transmit power with reference to the received measurement result.

As shown in FIG. 7, one possible structure of the power setting unit 602 includes:

a first determining subunit 701, configured to determine a distance between the home base station and the non-serving base station according to the received measurement result;

The first setting subunit 702 is configured to set a transmission power by referring to a distance between the home base station and the non-serving base station.

A possible structure of the first determining subunit 701, as shown in FIG. 8, includes:

The extracting module 801 is configured to separately extract, from the measurement results, all the measured values of the pilot/reference signal received power of each non-serving base station;

a merging processing module 802, configured to perform a combining process on all measured values of pilot/reference signal received power of each non-serving base station to obtain a combined effective value;

The path loss determining module 803 is configured to determine a path loss of the home base station to each non-serving base station according to the combined effective value of the pilot/reference signal received power of each non-serving base station and the reference transmit power of the non-serving base station; The distance determining module 804 is configured to determine a distance between the home base station and each of the non-serving base stations according to a path loss of the home base station to each of the non-serving base stations.

If the non-serving base station includes a plurality, the first setting sub-unit 702 sets the transmission power with reference to the minimum distance between the home base station and each non-serving base station.

As shown in FIG. 9, another possible structure of the power setting unit 602 includes:

a second determining subunit 901, configured to determine a path loss of the home base station to the non-serving base station according to the received measurement result;

The second setting subunit 902 is configured to set the transmit power by referring to the path loss of the home base station to the non-serving base station.

If the non-serving base station includes a plurality, the second setting sub-unit 902 sets the transmission power with reference to the minimum path loss of the home base station to each non-serving base station.

Preferably, the power setting unit 602 in the transmit power setting device is further configured to simultaneously refer to the CQI reported by the home terminal when setting the transmit power.

The home base station and the method for setting the transmit power provided by the embodiment of the present invention, the transmit power of the home base station no longer adopts a relatively constant power value, but effectively utilizes the measurement and reporting of the pilot/reference signal received power of the non-serving base station by the home terminal. The home base station sets the transmit power by referring to the measurement result reported by the home terminal;

The home base station and the method for setting the transmit power provided by the embodiments of the present invention do not need to modify the protocol, and are highly implementable. When setting the transmit power, the non-serving base station pilot/reference signal received power reported by the home terminal is considered, thereby effectively The interference generated by the home base station on the macro terminal and other home terminals is reduced. When the transmit power is set, the CQI reported by the home terminal can also be referred to at the same time, thereby improving the accuracy of the set transmit power.

The home base station and the method for setting the transmit power provided by the embodiments of the present invention can ensure that the transmit power of the home base station is improved under the premise of controlling the interference generated by the home base station to other base stations, which is beneficial to improving the user experience of the home terminal.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention are claimed in the present invention The invention is also intended to cover such modifications and variations within the scope of the invention.

Claims

Rights request

A method for setting a transmit power of a home base station, comprising:

2. The method according to claim 1, wherein the non-serving base station comprises a macro base station and/or another home base station, and the measurement result comprises each home terminal to the non-serving base station under the jurisdiction of the home base station Pilot/reference signal received power measurement.

The method according to claim 2, wherein the setting, by the home base station, the transmit power by using the received measurement result, specifically includes:

Determining a distance between the home base station and the non-serving base station according to the received measurement result; and setting a transmission power by referring to a distance between the home base station and the non-serving base station.

The method according to claim 3, wherein the determining the distance between the home base station and the non-serving base station according to the received measurement result includes:

Extracting, from the measurement results, all measured values of pilot/reference signal received power for each non-serving base station;

Combining all measured values of the pilot/reference signal received power of each non-serving base station to obtain a combined effective value;

Determining a path loss of the home base station to each non-serving base station according to the combined effective value of the pilot/reference signal received power of each non-serving base station and the reference transmit power of the non-serving base station; according to the home base station to each non-serving base station Path loss, determining the distance between the home base station and each non-serving base station.

The method according to claim 4, wherein the non-serving base station comprises a plurality of, and the transmitting power is set by a minimum distance between the reference home base station and each non-serving base station.

6. The method according to claim 5, wherein setting the transmission power by the minimum distance between the reference home base station and each non-serving base station is implemented by the following formula: P _u = I _m3X + Pathloss + ACIR - ΔΡ

Wherein, is the transmit power of the home base station; / _raax is the maximum allowable interference power of the non-serving base station corresponding to the minimum distance; is the path loss determined according to the minimum distance; ACIR is the non-home base station corresponding to the minimum distance The adjacent channel interference power ratio between the serving base stations; is the set interference power adjustment value.

The method according to claim 2, wherein the setting the received power by the received measurement result comprises:

Determining a path loss of the home base station to the non-serving base station according to the received measurement result; and setting a transmission power by referring to a path loss of the home base station to the non-serving base station.

The method according to claim 7, wherein the determining, according to the received measurement result, the path loss of the home base station to the non-serving base station, specifically includes:

The path loss of the home base station to each of the non-serving base stations is determined according to the combined effective value of the pilot/reference signal received power of each non-serving base station and the reference transmit power of the non-serving base station.

9. The method according to claim 8, wherein the non-serving base station comprises a plurality of, and the minimum path loss setting transmission power of the reference home base station to each non-serving base station.

The method according to claim 9, wherein the setting the transmit power by the minimum path loss of the reference home base station to each non-serving base station comprises:

According to the minimum path loss of the home base station to each non-serving base station, the corresponding relationship between the path loss and the transmit power is queried, and the transmit power of the home base station is set according to the query result.

The method according to claim 4 or 8, wherein the combining and processing all the measured values of the pilot/reference signal received power of each non-serving base station to obtain the combined effective value is implemented by the following formula: PCCPCH =∑«, · PCCPCH^ (ή

i=\

The PCCPCH^ is a combined effective value obtained by combining all the measured values of the pilot/reference signal received power of any non-serving base station; N is a reported value of the pilot/reference signal received power of the non-serving base station. Number of home terminals; for the i-th home terminal, PCCPCH;

The measured value of the pilot/reference signal received power of the non-serving base station reported by the i-th home terminal, "the weighting factor of the i-th home terminal.

12. The method according to claim 11, wherein the α, is the signal to noise ratio of the pilot/reference signal of the i-th home terminal, or all of the home terminals are 1.

The method according to claim 4 or 8, wherein before performing the merging process, the method further comprises:

Each measurement of the pilot/reference signal received power of each non-serving base station is smoothed.

14. The method according to claim 13, wherein the smoothing of each measurement value of the pilot/reference signal received power of each non-serving base station is implemented by the following formula:

PCCPCH^ (") = a · PCCPCH^c^n -l) + (1- α) · PCCPCH^ (") where PCCPCH^n) is the pilot/reference signal of any non-serving base station for any home terminal a smoothed effective value obtained by smoothing the current measured value of the received power; PCCPCH^n -l) is a smoothed effective value obtained by smoothing the previous measured value of the received power of the pilot/reference signal;

The current secondary measurement value of the received power for the pilot/reference signal; "is a set weighting factor and 0 ≤ α ≤ 1.

15. The method of claim 1, further comprising:

When setting the transmit power, the home base station simultaneously refers to the channel quality indicator CQI reported by the home terminal.

16. The method of claim 1, further comprising:

The home base station receives power according to the non-serving base station pilot/reference signal reported by the home terminal As a result of the measurement, when the maximum pilot/reference signal received power of the non-serving base station reported by the home terminal is lower than a preset threshold, the home base station sets the transmit power to the maximum transmit power.

17. A home base station, comprising:

The home base station according to claim 17, wherein the measurement node includes a measurement value of a pilot/reference signal received power of a non-serving base station by each home terminal under the jurisdiction of the home base station, and The power setting unit includes:

a first determining subunit, configured to determine a distance between the home base station and the non-serving base station by using the received measurement result;

And a first setting subunit, configured to set a transmit power by referring to a distance between the home base station and the non-serving base station.

The home base station according to claim 18, wherein the first determining subunit comprises:

An extracting module, configured to extract, from the measurement results, all measured values of pilot/reference signal received power for each non-serving base station;

a combining processing module, configured to combine all the measured values of the pilot/reference signal received power of each non-serving base station to obtain a combined effective value;

a path loss determining module, configured to determine a path loss of the home base station to each non-serving base station according to a combined effective value of the pilot/reference signal received power of each non-serving base station and a reference transmit power of the non-serving base station;

The distance determining module is configured to determine a distance between the home base station and each of the non-serving base stations according to a path loss of the home base station to each of the non-serving base stations.

20. The home base station according to claim 19, wherein the non-serving base station comprises a plurality, and the first setting subunit sets a transmission power with a minimum distance between the home base station and each non-serving base station.

The home base station according to claim 17, wherein the measurement result includes a measurement value of a pilot/reference signal received power of a non-serving base station by each home terminal under the jurisdiction of the home base station, and the power The setup unit includes:

a second determining subunit, configured to determine a path loss of the home base station to the non-serving base station according to the received measurement result;

And a second setting subunit, configured to set a transmit power by referring to a path loss of the home base station to the non-serving base station.

The home base station according to claim 21, wherein the non-serving base station comprises a plurality, and the second setting sub-unit refers to a minimum path loss setting transmission power of the home base station to each non-serving base station.

The home base station according to claim 17, wherein the power setting unit is further configured to simultaneously refer to a channel quality indicator CQI reported by the home terminal when setting the transmit power.

The home base station according to claim 17, wherein the power setting unit is further configured to: determine that a maximum pilot/reference signal received power of the non-serving base station reported by the home terminal is lower than a preset At the threshold, the transmit power is set to the maximum transmit power.