CN101895924A - Method, device and system for controlling power of home Node B - Google Patents

Abstract

The embodiment of the invention discloses a method, a device and a system for controlling the power of a home Node B. The method for controlling the power of the home base station comprises the following steps of: determining that user equipment (UE) enters a micro-cell under the coverage of signals of the home Node B (HNB); determining that the UE does not have an authority to access to the HNB; acquiring a measurement report of the UE, wherein the measurement report comprises macro-cell signal quality information of the position of the UE; and determining that the signals of the micro-cell generate same frequency interferences to the signals of the macro-cell according to the macro-cell signal quality information, and reducing the transmitting power of the HNB. By applying the technical scheme of the embodiment of the invention, when the unauthorized UE enters a coverage area of the micro-cell of the HNB, the transmitting power of the HNB is adjusted according to the signal quality of the macro-cell in which the UE is positioned so as to reduce the interferences caused by the HNB to the macro-cell and reduce drop-call phenomena of the unauthorized UE in the coverage area of the micro-cell of the HNB.

Description

A home base station power control method, device and system

technical field

The present invention relates to the field of communication technology, in particular to a method, device and system for power control of a home base station.

Background technique

With the rapid increase in the number of mobile communication users and the continuous improvement of user needs, mobile communication system equipment also presents a diversified development trend. As a miniaturized base station, HNB (Home NodeB) is aimed at application scenarios such as homes, schools, and enterprises. The network system based on HNB or HeNB can effectively improve indoor coverage, increase indoor access rate, reduce delay, and meet various user application requirements. At the same time, it can also reduce the load of macro base stations, so that the capacity of macro base stations is mainly used for outdoor or sports. medium users.

HNB application scenarios include capacity expansion scenarios and supplementary coverage scenarios: the capacity expansion scenario adopts superimposed networking, that is, a layer of HNB micro cell coverage is superimposed on the macro cell network coverage. In the supplementary coverage scenario, the HNB micro cell covers the blind area covered by the macro cell network. No matter in any of the above application scenarios, there will be a phenomenon that the macro cell network coverage overlaps with the HNB micro cell coverage. Since the operator may adopt a variety of frequency schemes, it is unavoidable that the HNB and the macro base station use the same frequency point, resulting in co-frequency interference between the HNB and the macro base station. The specific impact is as follows: when there is no access to the HNB When an authorized UE (hereinafter referred to as unauthorized UE) moves to the coverage area of the HNB micro cell, due to the strong HNB signal, it will generate strong interference to the UE, and in severe cases, it will cause call drop, thus causing the coverage within the macro base station to be "dead". district".

Contents of the invention

In order to solve the above technical problems, embodiments of the present invention provide a home base station power control method, device and system to solve the same-frequency interference problem between HNB and macro base station, the technical solution is as follows:

An embodiment of the present invention provides a home base station power control method, which is applied to a communication network including a macro cell and a micro cell, and the method includes:

Determining that a user equipment UE enters the micro cell covered by the signal of the home base station HNB;

determining that the UE does not have the right to access the HNB;

Obtaining a measurement report of the UE, where the measurement report includes the signal quality information of the macro cell where the UE is located;

It is determined according to the signal quality information of the macro cell that the signal of the micro cell has co-channel interference with the signal of the macro cell, and the transmission power of the HNB is reduced.

The embodiment of the present invention also provides a home base station power control device, which is applied to a communication network including a macro cell and a micro cell, and the device includes:

a UE detection unit, configured to determine that a user equipment UE enters a micro cell covered by a home base station HNB signal;

a UE authentication unit, configured to determine that the UE does not have the right to access the HNB;

a measurement report obtaining unit, configured to obtain a measurement report of the UE, where the measurement report includes signal quality information of a macro cell where the UE is located;

A power adjustment unit, configured to determine, according to the macro cell signal quality information, that the signal of the micro cell has co-channel interference with the signal of the macro cell, and reduce the transmission power of the HNB.

An embodiment of the present invention also provides a home base station system, including a home base station and the aforementioned device for controlling power of the home base station.

According to the technical solution provided by the embodiment of the present invention, when the unprivileged UE enters the coverage area of the HNB micro cell, the transmission power of the HNB is adjusted according to the signal quality of the macro cell where the UE is located, thereby reducing the interference of the HNB to the macro cell and reducing the The call drop phenomenon of the unlicensed UE in the coverage area of the HNB micro cell.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to these drawings.

FIG. 1 is a flowchart of a power control method for a home base station according to an embodiment of the present invention;

FIG. 2 is a signaling flowchart of a home base station power control method according to an embodiment of the present invention;

FIG. 3 is a flow chart of a method for adjusting the transmit power of a home base station according to a measurement report according to an embodiment of the present invention;

FIG. 4 is a flow chart of another method for adjusting the transmit power of a home base station according to a measurement report according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a home base station power control device according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a power adjustment unit according to an embodiment of the present invention;

FIG. 7 is another schematic structural diagram of a power adjustment unit according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a third structure of a power adjustment unit according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a home base station power control system according to an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

Fig. 1 is a kind of HNB power control method flowchart of the embodiment of the present invention, comprises the following steps:

S101. Determine that a user equipment UE has entered a micro cell covered by a signal of a home base station HNB;

S102. Determine that the UE does not have the right to access the HNB;

S103. Obtain a measurement report of the UE, where the measurement report includes macro cell signal quality information where the UE is located;

S104. Determine, according to the macro cell signal quality information, that the signal of the micro cell has co-channel interference with the signal of the macro cell, and reduce the transmit power of the HNB.

The subject of execution of each step of the above method may be the HNB itself, or a functional entity independent of the HNB. Applying the above solution, when the unlicensed UE enters the coverage area of the HNB micro cell, the transmit power of the HNB is adjusted according to the signal quality of the macro cell where the UE is located, thereby reducing the co-channel interference of the HNB to the macro cell and reducing the unlicensed UE’s Call drop phenomenon in the coverage area of HNB microcell.

In the following, the HNB power control method in the embodiment of the present invention will be described by taking the power control performed by the HNB itself as an example, combined with a specific signaling flow.

Fig. 2 shows the signaling flowchart of the HNB power control method according to the embodiment of the present invention, including the following steps:

S201, the UE sends a LAU/RAU message to the HNB.

Assuming that the UE initially resides in the macro cell, when the UE moves to the micro cell covered by the HNB transmission signal, it will first establish an RRC (Radio Resource Control, radio resource control) connection with the HNB. After the RRC connection is established, the UE will send the HNB Initiates the location update process.

In this embodiment, the UE sends a LAU (Location Area Update, location update) and/or RAU (Routing Area Update, routing area update) message to the HNB. After receiving the LAU and/or RAU message, the HNB can determine that there is a UE entering its own signal coverage area.

In this embodiment, the HNB determines whether a UE enters its own coverage area by monitoring the LAU and/or RAU messages. It can be understood that the HNB may also use other methods (for example, monitoring the RRC establishment request message sent by the UE) to determine that there is a UE entering the coverage area of the HNB micro cell, which is not limited in this embodiment of the present invention.

S202, the HNB judges the access right of the UE.

The embodiment of the present invention is proposed for the co-channel interference situation existing in the small cell covered by the transmission signal of the HNB by the unauthorized UE. In this step, the HNB checks whether the UE entering the coverage area has the authorization to access the HNB. If the method is passed, the following steps are further performed to reduce the interference of the HNB to the macro cell through power control.

If the UE has the right to access the HNB, the UE is allowed to normally camp on the micro cell where the UE is located, and there is no need to continue to perform subsequent steps.

S203, the HNB sends a measurement control message to the UE.

After the HNB determines that the UE newly entering the coverage area is an unprivileged UE, it initiates a subsequent power control process: first, it sends a measurement control (measurement control) message to the UE, instructing the UE to measure signal quality information.

S204, the UE reports the measurement report message to the HNB.

The UE measures the signal quality of the macro cell or the HNB, and sends the measurement result to the HNB in a measurement report (measurement report) message.

S205, the HNB adjusts the transmission power according to the measurement report of the UE.

The HNB collects the measurement reports of the UE, analyzes the measurement reports, and adjusts the transmission power of the HNB according to the analysis results to reduce the interference of the HNB to the macro cell.

The measurement report sent by the UE may include signal quality information of the macro cell, such as the received signal code power RSCP_macro of the macro cell, the chip energy to interference power density ratio Ec/Io_macro of the macro cell, and the like. The HNB can analyze the signal quality information of the macro cell to determine whether there is co-channel interference, and adjust the transmission power of the HNB accordingly to reduce the interference of the HNB to the macro cell.

In addition, the measurement report sent by the UE may further include signal quality information of the HNB, such as the received signal code power RSCP_micro of the HNB. The HNB adjusts the transmission power according to the relationship between the signal quality between the macro cell and the micro cell, which can reduce the interference of the HNB transmission signal to the macro cell signal and ensure the coverage effect of the HNB.

Figure 3 is a flow chart of a method for adjusting HNB transmit power according to a measurement report provided by an embodiment of the present invention, including the following steps:

S301, judging whether the UE is in a coverage blind area of the macro cell base station, if so, performing S302, otherwise ending the power adjustment procedure.

When the received signal code power RSCP_macro of the macro cell of the UE is small, it indicates that the UE is located in a weak coverage area of the macro cell, which may also be called a coverage hole. When the UE is in the coverage blind area of the macro cell base station, even if there is no interference from the HNB, normal calls cannot be guaranteed. In this case, the function of the HNB is to supplement the blind area covered by the base station of the macro cell, and there is no need to adjust the transmission power of the HNB to ensure the coverage effect of the HNB.

In practical applications, the adjustment threshold RSCP_th can be set to -90dBm, that is, to judge:

RSCP_macro＞-90dBm

Whether it is true, if yes, then further perform subsequent steps, otherwise end the power adjustment process.

S302. Determine whether the Ec/Io of the macro cell is smaller than a preset adjustment threshold. If yes, execute S303, otherwise end the power adjustment procedure.

In this embodiment, the interference situation is evaluated according to the chip energy-to-interference power density ratio Ec/Io_macro of the macro cell. When Ec/Io_macro is less than a certain threshold value, it is considered that there is strong co-channel interference, which may affect the normal call of the unlicensed UE in the macro cell, so further steps need to be performed to adjust the transmit power of the HNB.

In practical applications, the adjustment threshold Ec/Io_th can be set to -18dB, that is, to judge:

Ec/Io_macro＜-18dB

Whether it is true, if yes, then further perform subsequent steps, otherwise end the power adjustment process.

S303. Reduce the transmit power of the HNB.

When it is determined that the unlicensed UE is not in the coverage blind area of the macro cell base station and there is strong co-channel interference, in order to ensure the signal quality of the macro cell, the transmission power of the HNB can be appropriately reduced to reduce the impact of the signal transmitted by the HNB on the macro cell signal. interference. It can be understood that, in order to give priority to ensuring the signal quality of the macro cell, the transmit power of the HNB may also be all turned off.

In this embodiment, by analyzing the signal quality information of the macro cell, the HNB adjusts the transmit power of the HNB accordingly when it is determined that the UE is not in the coverage blind area of the base station of the macro cell and there is strong co-channel interference, thereby reducing the Interference from HNB to macro cell.

It can be understood that, in practical applications, the execution order of the above-mentioned judging steps S301 and S302 may also be exchanged, or executed in parallel. Moreover, S301 may not be executed, that is, regardless of whether the UE is in the coverage blind area of the macro cell base station, directly determine whether there is co-channel interference according to Ec/Io_macro, and then determine whether to adjust the transmit power of the HNB accordingly, which does not affect the present invention Realization of technical solutions.

FIG. 4 is a flow chart of another method for adjusting HNB transmission power according to a measurement report provided by an embodiment of the present invention, including the following steps:

S401, judging whether the UE is in the coverage blind area of the macro cell base station, if yes, execute S302, otherwise end the power adjustment procedure.

S402, judging whether the Ec/Io of the macro cell is smaller than a preset adjustment threshold, if yes, execute S403, otherwise end the power adjustment procedure.

Wherein, the specific implementation of S401-S402 may be similar to that of S301-S302, and the description will not be repeated in this embodiment.

S403. Determine whether the path loss from the HNB to the UE is smaller than the boundary path loss threshold of the HNB.

In order to ensure the coverage of HNB, it is stipulated in related agreements that the path loss PL (Path Loss) from HNB to UE must be less than the boundary path loss threshold PL_th, where the typical value of PL_th is 47dB. If PL<PL_th, it means that the current The signal at the edge is stronger, and the transmit power can be appropriately reduced.

where PL is defined as follows:

PL=P_pilot-RSCP_micro

In the embodiment of the present invention, the measurement report is reported by the UE that has just entered the coverage area of the small cell of the HNB, so it can be considered that the UE is currently at the coverage edge of the HNB. The HNB first calculates the PL value from the HNB to the UE based on the RSCP_micro in the UE measurement report and its own current transmit power P_pilot, and compares the value with PL_th, and if PL<PL_th, proceed to further steps, otherwise end the power adjustment process .

S404, reduce the transmit power of the HNB.

In this embodiment, since the coverage effect of the HNB is to be ensured while reducing the interference, it is necessary to limit the reduction range of the transmission power. In practical applications, the value of PL-PL_th can be approximately used as the maximum allowable transmission power reduction range.

In practical applications, it may not be necessary to reduce the transmit power to the maximum level to ensure normal communication of unprivileged UEs within the coverage area of the HNB microcell. On the other hand, UEs entering the coverage area of the HNB microcell may not immediately conduct business. Based on the above situation, in another embodiment of the present invention, the method of gradually reducing the HNB transmission power can also be adopted, that is to say, when it is determined that the HNB transmission power needs to be reduced, it is not adjusted in place at one time, but according to less than (PL -PL_th) to gradually reduce the transmit power of the HNB. Among them, the method of reducing the HNB transmission power can be adjusted by equal steps, such as reducing 2dB each time, or by incremental adjustment, such as reducing 2dB for the first time, reducing 3dB for the second time, and reducing 4dB for the third time.. ...This embodiment does not need to limit the specific adjustment method. After each adjustment, wait for the next time a UE enters the coverage area of the HNB micro cell, and then re-initiate the judgment process to determine whether it needs to be adjusted again. Applying this scheme, while reducing the interference of HNB to the macro cell, it can minimize the reduction of the transmission power of the HNB, and the maximum allowable transmission power reduction range is specified according to the boundary path loss threshold value PL_th of the HNB, ensuring Coverage effect of HNB.

Compared with the previous embodiment, this embodiment further considers the signal quality information of the HNB micro cell when determining whether to adjust the transmit power, and can reduce the interference of the HNB transmit signal to the macro cell signal while ensuring the HNB's overlay effect. It can be understood that, in practical applications, the execution order of the above-mentioned judgment steps S401, S402, and S403 can also be exchanged, or executed in parallel, and it is also possible to ignore whether the UE is in the coverage blind area of the macro cell base station, that is, not to execute S401, These do not affect the realization of the technical solution of the present invention.

It can be understood that the power control scheme provided by the above-mentioned embodiments of the present invention can be executed automatically, that is, it can detect in real time whether a UE enters the coverage area of the HNB micro cell and execute the follow-up procedure; it can also be executed periodically or manually triggered , for periodic execution or manual trigger execution, a detection duration T0 can be preset, and within the duration of T0, it is detected whether there is a UE entering the coverage area of the HNB micro cell and subsequent procedures are executed. For the solution of power adjustment according to the PL value, no matter which of the above methods is adopted, when the transmit power of the HNB has been adjusted to the minimum value, the power adjustment can be stopped.

In addition, if the HNB is powered off, the transmit power of the HNB can be restored to the initial value after it is turned on again.

Corresponding to the above method embodiment, the embodiment of the present invention also provides a home base station power control device, as shown in FIG. 5 : including:

The UE detection unit 510 is configured to determine that a user equipment UE enters the micro cell covered by the home base station HNB signal;

UE authentication unit 520, configured to determine that the UE does not have the right to access the HNB;

A measurement report obtaining unit 530, configured to obtain a measurement report of the UE, where the measurement report includes signal quality information of a macro cell where the UE is located;

The power adjustment unit 540 is configured to determine, according to the macro cell signal quality information, that the signal of the micro cell has co-channel interference with the signal of the macro cell, and reduce the transmit power of the HNB.

Applying the above-mentioned control device, when the unprivileged UE enters the coverage area of the HNB micro cell, the transmission power of the HNB is adjusted according to the signal quality of the macro cell where the UE is located, thereby reducing the interference of the HNB transmitted signal to the signal of the macro cell and reducing the unprivileged UE. The call drop phenomenon of the UE in the coverage area of the HNB micro cell.

Wherein, the UE detection unit may determine that a UE enters the micro cell covered by the HNB signal according to the received location update LAU message and/or routing area update RAU message.

The measurement report obtaining unit 530 may include:

a control message sending subunit, configured to send a measurement control message to the UE;

The measurement report receiving subunit is configured to receive the measurement report sent by the UE according to the measurement control message, where the measurement report includes the signal quality information of the macro cell where the UE is located.

The macro cell signal quality information obtained by the measurement report obtaining unit 530 may include:

The received signal code power RSCP_macro of the macro cell and the chip energy to interference power density ratio Ec/Io_macro of the macro cell.

Referring to FIG. 6, it is a schematic structural diagram of the power adjustment unit 540, which may include:

The first judging subunit 541 is used to judge whether Ec/Io_macro is less than a preset adjustment threshold;

The power adjustment subunit 544 is configured to reduce the transmission power of the HNB when the determination result of the first determination subunit 541 is yes.

The measurement report obtained by the measurement report obtaining unit 530 may also include the received signal code power RSCP_macro of the macro cell. FIG. 7 is another schematic structural diagram of the power adjustment unit 540. On the basis of that shown in FIG. 6, it further includes:

The second judging subunit 542 is configured to judge whether the UE is in a coverage blind area of a macro cell base station according to RSCP_macro before the first judging subunit 541 makes a judgment; if not, trigger the first judging subunit 541 It is further judged whether Ec/Io_macro is smaller than a preset adjustment threshold.

Applying the power adjustment unit shown in Figure 7, by analyzing the signal quality information of the macro cell, when it is determined that the UE is in the coverage blind area of the base station of the macro cell and there is co-channel interference, the transmit power of the HNB is adjusted accordingly, so that Reduce the interference of HNB to the macro cell.

The measurement report obtained by the measurement report obtaining unit 530 may also include signal quality information of the micro cell where the UE is located, and the information may be the received signal code power RSCP_micro of the HNB. FIG. 8 is another schematic structural diagram of the power adjustment unit 540. On the basis of that shown in FIG. 7, it further includes:

The third judging subunit 543 is configured to calculate the HNB-to-the the path loss PL of the UE; determine whether the PL is smaller than the boundary path loss threshold PL_th of the HNB; if yes, trigger the power adjustment subunit 544 to reduce the transmit power of the HNB.

Wherein, the maximum reduction range of the transmission power of the HNB by the power adjustment subunit 544 may be PL-PL_th. The power adjustment subunit 544 may gradually reduce the transmit power of the HNB with a step size smaller than (PL-PL_th).

The power adjustment unit shown in Figure 8 is used to adjust the transmission power according to the relationship between the signal quality of the macro cell and the micro cell, which can reduce the interference of the HNB to the macro cell and ensure the coverage effect of the HNB.

The home base station power control device provided by the embodiment of the present invention may be an HNB, may also be built in the HNB, or may be a functional entity independent of the HNB. For the situation that the home base station power control device is independent of the HNB, the embodiment of the present invention also provides a home base station power control system, as shown in FIG. 9 , the system includes a home base station 910 and a home base station power control device 920 . Wherein, the home base station power control device may be the same as the aforementioned home base station power control device, which will not be repeated here.

As for the device or system embodiment, since it basically corresponds to the method embodiment, for related parts, please refer to the part of the description of the method embodiment. The device or system embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, It can be located in one place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without creative effort.

In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways without exceeding the spirit and scope of the present application. The present embodiment is only an exemplary example and should not be taken as a limitation, and the specific content given should not limit the purpose of the present application. For example, the division of the units or subunits is only a division of logical functions. In actual implementation, there may be other division methods, such as combining multiple units or multiple subunits. Also, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not implemented.

In addition, the described systems, devices and methods and schematic diagrams of different embodiments may be combined or integrated with other systems, modules, techniques or methods within the scope of the present application. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The foregoing is only a specific embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the principle of the present invention. It should be regarded as the protection scope of the present invention.

Claims (15)

1. a Home eNodeB Poewr control method is applied to comprise in the communication network of macrocell and Microcell, and it is characterized in that, described method comprises:

Define user equipment (UE) and enter the Microcell that Home eNodeB HNB signal is covered;

Determine that described UE does not have the authority that inserts described HNB;

Obtain the measurement report of described UE, in the described measurement report, comprise the macrocell signal quality information of described UE present position;

There is co-channel interference in the signal of determining described Microcell according to described macrocell signal quality information for the signal of described macrocell, reduces the transmitting power of described HNB.

2. method according to claim 1 is characterized in that, the described user equipment (UE) that defines enters the Microcell that the HNB signal is covered, and comprising:

Upgrade LAU message and/or routing area updating RAU message according to the position that receives, define UE and enter the Microcell that the HNB signal is covered.

3. method according to claim 1 is characterized in that, the measurement report that described acquisition UE sends comprises:

Send the measurement control messages to described UE;

Receive the measurement report that described UE sends according to described measurement control messages.

4. method according to claim 1 is characterized in that,

The signal quality information of described macrocell comprises: the chip energy of macrocell compares Ec/Io_macro with interference power density;

There is co-channel interference in the signal that described signal quality information according to macrocell is determined described Microcell for the signal of described macrocell, comprising: judge that whether Ec/Io_macro is less than default adjustment threshold value; If then there is co-channel interference in the signal of definite described Microcell for the signal of described macrocell.

5. method according to claim 4 is characterized in that,

The signal quality information of described macrocell also comprises: the received signal code power RSCP_macro of macrocell;

Before judging that Ec/Io_macro is whether less than default adjustment threshold value, also comprise:, judge whether described UE is in the macro cell base station coverage hole according to RSCP_macro; If not, judge further that then whether Ec/Io_macro is less than default adjustment threshold value.

6. according to claim 4 or 5 described methods, it is characterized in that,

The Microcell signal quality information that also comprises described UE present position in the described measurement report, the Microcell signal quality information of described UE present position comprises: the received signal code power RSCP_micro of HNB;

Before judging after whether Ec/Io_macro is less than default adjustment threshold value, reducing the transmitting power of HNB, also comprise:

Calculate the path loss PL of described HNB according to described RSCP_micro to described UE;

Judge that described PL is whether less than the border path loss threshold value PL_th of HNB; If then reduce the transmitting power of described HNB.

7. method according to claim 6 is characterized in that,

The maximum reduction amplitude of the transmitting power of described HNB is PL-PL_th;

The transmitting power of described reduction HNB specifically comprises: with the step value less than (PL-PL_th), progressively reduce the transmitting power of HNB.

8. a Home eNodeB output control device is applied to comprise in the communication network of macrocell and Microcell, and it is characterized in that, described device comprises:

The UE detecting unit is used to define user equipment (UE) and enters the Microcell that Home eNodeB HNB signal is covered;

The UE authenticating unit is used for determining that described UE does not have the authority that inserts described HNB;

Measurement report obtains the unit, is used to obtain the measurement report of described UE, in the described measurement report, comprises the macrocell signal quality information of described UE present position;

Power adjustment unit, there is co-channel interference in the signal that is used for determining described Microcell according to described macrocell signal quality information for the signal of macrocell, reduces the transmitting power of described HNB.

9. device according to claim 8 is characterized in that,

Described UE detecting unit upgrades LAU message and/or routing area updating RAU message according to the position that receives, and defines UE and enters the Microcell that the HNB signal is covered.

10. device according to claim 9 is characterized in that, described measurement report obtains the unit, comprising:

Control messages sends subelement, is used for sending the measurement control messages to described UE;

Measurement report receives subelement, is used to receive described UE according to the measurement report that described measurement control messages sends, and in the described measurement report, comprises the macrocell signal quality information of described UE present position.

11. device according to claim 8 is characterized in that,

The macrocell signal quality information that described measurement report obtains the unit acquisition comprises:

The received signal code power RSCP_macro of macrocell and the chip energy of macrocell compare Ec/Io_macro with interference power density;

Described power adjustment unit comprises:

First judgment sub-unit is used to judge that whether Ec/Io_macro is less than default adjustment threshold value;

Power is adjusted subelement, is used in the judged result of described first judgment sub-unit reducing the transmitting power of described HNB when being.

12. device according to claim 11 is characterized in that,

The signal quality information of described macrocell also comprises: the received signal code power RSCP_macro of macrocell;

Described device also comprises second judgment sub-unit, is used for before described first judgment sub-unit is judged, according to RSCP_macro, judges whether described UE is in the macro cell base station coverage hole; If not, then trigger described first judgment sub-unit and judge that further whether Ec/Io_macro is less than default adjustment threshold value.

13. according to claim 11 or 12 described devices, it is characterized in that,

The Microcell signal quality information that also comprises described UE present position in the described measurement report, the Microcell signal quality information of described UE present position comprises: the received signal code power RSCP_micro of HNB;

Described device also comprises the 3rd judgment sub-unit, be used for judged result in described first judgment sub-unit and be after being, described power adjusts before the transmitting power that subelement reduces HNB, calculates the path loss PL of described HNB to described UE according to described RSCP_micro; Judge that described PL is whether less than the border path loss threshold value PL_th of HNB; If then trigger described power and adjust the transmitting power that subelement reduces described HNB.

14. device according to claim 13, it is characterized in that, described power adjustment subelement is PL-PL_th to the maximum reduction amplitude of the transmitting power of HNB, and described power is adjusted subelement with the step value less than (PL-PL_th), progressively reduces the transmitting power of HNB.

15. a family base station system is characterized in that, comprises Home eNodeB and as each described Home eNodeB output control device of claim 7 to 14.

Images