WO2011012067A1

WO2011012067A1 - Interference processing method and home base station

Info

Publication number: WO2011012067A1
Application number: PCT/CN2010/075489
Authority: WO
Inventors: 李吉平; 夏林峰; 李铮铮
Original assignee: 华为技术有限公司
Priority date: 2009-07-27
Filing date: 2010-07-27
Publication date: 2011-02-03
Also published as: CN101969645B; CN101969645A

Abstract

An interference processing method and a home base station. The method includes that a home base station which needs to process interference gets sub-band utilization information sent by a home base station nearby the former home base station. The sub-band utilization information is used to indicate the operating sub-band employed by home base stations. According to the obtained sub-band utilization information, the home base station chooses the sub-band which gets least interference and/or gets no interference to be the operating sub-band of the home base station. The method and the home base station solve the problem of interference between home base stations.

Description

Interference processing method and home base station This application claims the priority of the Chinese application filed on July 27, 2009, the application number is 200910089902. 6 , the invention name is "the interference processing method and the home base station", the entire contents of which are incorporated by reference. Combined in this application. Technical field

The present invention relates to the field of communications, and in particular, to a method for processing interference and a home base station.

Background technique

In order to meet the increasingly diverse needs of users, limited network devices such as Home eNB and Acces s Point have emerged in mobile communication technologies. The dense deployment of home base stations can cause interference between home base stations.

In the prior art, in order to reduce the interference between the macro base stations, a partial frequency reuse (FFR) and a soft frequency reuse (SFFR) technology are usually adopted. .

The part frequency reuse method includes dividing the frequency that can be used by the system into multiple sub-bands, and performing network coverage planning according to the designed rules to perform network deployment and configuring corresponding working sub-bands. Assume that the frequency that the system can use is divided into four sub-bands, each of which uses one of the sub-bands, and that each cell and surrounding cells use different sub-bands, thus avoiding interference between adjacent cells. . In order to improve the frequency reuse efficiency, the SFFR technology is also introduced in the prior art, that is, the cell is divided into a cell center and a cell edge, and each cell center can use the frequency resource of the entire system, but there is a certain power limitation, and the cell center needs to Lower power transmission data; different cell edges use different sub-bands to avoid interference between different cells.

In this prior art, operators need to plan the network and frequency in advance for unified deployment. Since the home base station is privately owned, its deployment and startup are flexible and arbitrary. The operator cannot plan and deploy the working sub-bands of the home base station in advance, so that the FFR and SFFR technologies in the prior art cannot be applied to the home base station to solve the interference problem of the home base station.

Summary of the invention

The embodiments of the present invention provide a method for processing interference and a home base station, which can solve the interference problem between the home base stations.

An embodiment of the present invention provides a method for processing a interference, including:

The home base station that needs to perform the interference processing acquires the subband usage information sent by the home base station adjacent to the home base station, where the subband usage information is used to indicate the working subband used by the home base station;

The home base station selects a subband with the least interference and/or is not disturbed as the working subband of the home base station according to the acquired subband usage information.

The embodiment of the invention further provides a method for processing a disturbance, comprising:

The home base station transmits the subband usage information to the home base station adjacent to the home base station through a specific physical channel, to notify the neighboring home base station of the selected working subband, wherein the specific physical channel is used for Subband usage information carried between the home base stations.

The embodiment of the invention further provides a home base station, including:

An obtaining module, configured to acquire subband usage information sent by an adjacent home base station, where the subband usage information is used to indicate a working subband used by the home base station;

And a selection module, configured to select, according to the subband usage information acquired by the obtaining module, a subband with minimal interference and/or no interference as a working subband.

a second sending module, configured to send the sub-band usage information to the neighboring home base station by using a specific physical channel, and notify the neighboring home base station of the selected working sub-band, where the specific physical channel is used to be carried in the home base station Subband usage information between transmissions. In the embodiment of the present invention, the home base station acquires the subband usage information sent by the neighboring home base station, so that each of the home base stations can learn the subband usage information of other home base stations adjacent to the home base station, and then each of the home base stations according to the neighboring home base The sub-band usage information of the base station selects the sub-band that is least interfered with and/or undisturbed as its own working sub-band. The interference processing method enables dynamic coordination of frequency resources of the entire system between cells, and solves the problem of interference between the home base stations. DRAWINGS

1 is a flow chart of Embodiment 1 of a method for processing a disturbance according to the present invention;

2 is a flowchart of Embodiment 2 of the method for processing interference according to the present invention;

3 is a schematic diagram of a relationship between a home base station according to various embodiments of the present invention; FIG. 4 is a flowchart of Embodiment 3 of the method for processing interference according to the present invention;

FIG. 5 is a schematic structural diagram of Embodiment 1 of a home base station according to the present invention;

6 is a schematic structural diagram of Embodiment 2 of a home base station according to the present invention;

FIG. 7 is a schematic structural diagram of Embodiment 3 of a home base station according to the present invention. detailed description

FIG. 1 is a flowchart of Embodiment 1 of a method for processing a disturbance according to the present invention, including:

Step 101: The home base station that needs to perform the interference processing acquires the subband usage information sent by the home base station adjacent to the home base station, where the subband usage information is used to indicate the working subband used by the home base station;

Step 102: The home base station selects, as the working sub-band of the home base station, the sub-band that is least interfered with and/or is not interfered according to the acquired sub-band usage information.

According to the method provided by the first embodiment of the present invention, the home base station acquires the subband usage information sent by the neighboring home base station, so that the home base station can learn the subband usage information of other home base stations adjacent to the home base station, and then each home base station according to the neighboring home base The sub-band usage information of the base station selects the sub-band with the least interference and/or undisturbed interference as its own operating frequency. The method of the interference processing does not require the operator to plan and deploy the working sub-bands of the home base station in advance, and the home base stations in each cell can flexibly select the working sub-bands to solve the interference problem between the home base stations. The embodiment shown in FIG. 1 of the present invention may further include: the home base station transmitting the subband usage information to the neighboring home base station through a specific physical channel, and notifying the neighboring home base station of the selected working subband.

In this way, each home base station can send its own sub-band usage information to the adjacent home base station in addition to the sub-band usage information of the neighboring home base station.

A specific physical channel is used to carry subband usage information transmitted between home base stations. The specific physical channel may be, for example, a newly defined physical channel dedicated to transmitting subband usage information between the home base stations, or a physical channel transmitting other information between the home base stations, that is, the specific physical channel is Used to transmit other information is also used to transfer sub-band usage information. And time-frequency resources are reserved for the specific physical channel. The size of the time-frequency resource is equal to the number of sub-bands divided by the system bandwidth multiplied by the number of sub-carriers used for mapping each sub-band, and the sub-carriers mapped by each sub-band are called A resource element (Resource Element) establishes a mapping relationship between a subband and a resource unit of a specific physical channel. The number of subbands of the system bandwidth division, the time-frequency resources of the specific physical channel used for communication between the home base stations, and the mapping manner and mapping relationship between the resource elements of the sub-band and the specific physical channel may be notified to each by the core network. The home base station may also be configured in each of the home base stations in advance, so that the home base station can acquire the mapping relationship between the sub-band and the resource unit of the specific physical channel in advance. The setting of the mapping relationship between the subband and the resource unit of the specific physical channel can be, for example, as follows:

Assume that the number of subbands divided by the system bandwidth is 8, and the number of subcarriers used for mapping each subband is 3, so that the size of the time-frequency resource of the system is 8x3=24 subcarriers, and 6 subcarriers can be allocated in the frequency domain. The time domain is assigned 4 symbols, or it can be other allocation methods. Each of the three subcarriers can be divided into one group, so that eight sets of subcarriers are obtained, and each set of subcarriers corresponds to one subband.

FIG. 2 is a flowchart of Embodiment 2 of the method for processing interference according to the present invention, including:

Step 201: When the home base station starts or discovers that the interference is relatively serious, the signal power of the at least one resource unit of the specific physical channel is obtained, for example, by monitoring the physical channel. Obtaining subband usage information of the neighboring home base station according to a mapping relationship between the pre-acquired subband and the resource unit of the specific physical channel, where the subband usage information is included on a specific physical channel The signal power sent by the resource unit.

Specifically, the home base station may obtain a mapping relationship between the sub-band and the resource unit of the specific physical channel in advance. When the home base station acquires the signal power of the certain resource unit, it may be determined that the sub-band corresponding to the resource unit has been Occupied, equivalent to the sub-band usage information of the neighboring home base station obtained by the home base station.

After the home base station has selected a certain subband as its working subband, the home base station may send the subband usage information to the neighboring home base station at a fixed power on the resource unit corresponding to the subband, and notify the phase. The sub-band used by the neighboring home base station itself. The power used by each home base station to transmit subband usage information is the same. The home base stations that are not adjacent to each other can use the same working sub-band. FIG. 3 is a schematic diagram showing the relationship between a home base station according to various embodiments of the present invention. The home base station A has six adjacent home base stations, which are B, C, D, E, F, and G, respectively. Wherein, B and E are not adjacent, and B and E can use the same working subband a. Since both B and E send signals on the resource unit corresponding to the working subband a, the resource corresponding to the working subband a The power of the signal on the unit is the superposition of the power of the signals transmitted by B and E on the resource unit. If a working subband is used by multiple home base stations, the power of the signal on the corresponding resource unit of the working subband is large. If a working subband is not used by the home base station, the power of the signal on the corresponding resource unit of the working subband is the same as the low noise level. If a working subband is used by a small number of home base stations, the power of the signal on the corresponding resource unit of the working subband is small.

Step 202: The home base station uses a subband corresponding to a resource unit having the same signal power and the same number of noise levels as a preferred subband, and the home base station selects one subband from the preferred subband as a working subband. For example, one subband may be randomly selected as a work. Subband, a subband may also be selected as a specific subband according to a specific algorithm or rule; if there is no signal unit and the same noise unit of the noise floor level, the subband corresponding to the resource unit of the physical channel with the smallest signal power is selected as the subband. Working sub-band of the home base station. When the power of a signal on a resource unit is of the same order of magnitude as the noise floor, the subband corresponding to the resource unit may be considered to be not used by any home base station. The power of the signal on the resource unit is small, indicating that the sub-band corresponding to the resource unit is occupied by a smaller number of home base stations, and the interference received on the sub-band It will also be smaller.

Step 203: The home base station sends a signal to the adjacent home base station with a fixed power on the resource unit of the physical channel corresponding to the working sub-band of the working area, and the home base station notifies the neighboring home base station of the selected working sub-band. .

In step 201, if the home base station acquires the signal power of a resource unit on a specific physical channel, and the signal power is the same as the ground noise level, the sub-band corresponding to the resource unit can be directly used as a working sub-band without acquiring the remaining resources. The signal on the unit is visible. For the embodiment shown in Figure 2, the home base station needs to acquire the signal power of at least one resource unit.

The home base station may also select multiple sub-bands as its own working sub-bands, and the home base station needs to transmit signals to the adjacent home base stations with fixed power on the resource units corresponding to the respective sub-bands through specific physical channels. Since the sub-band has a mapping relationship with the resource unit of the specific physical channel, when the home base station sends a signal to the neighboring base station through the resource unit of the specific physical channel, the neighboring base station can learn that the sub-band corresponding to the resource unit of the physical channel is The home base station is used.

For step 202, if the home base station needs to select multiple working sub-bands, but the number of preferred sub-bands is not enough, then it is necessary to simultaneously select the preferred sub-band and the sub-band with the least interference as the working sub-band.

When transmitting the subband usage information, the home base station may diverge the time domain and the frequency domain of the resource unit of the physical channel, that is, the time domain and the frequency domain of the resource unit are discontinuous, to obtain time diversity gain and frequency diversity gain, The neighboring home base station can improve the accuracy of signal detection.

The home base station may also transmit the subband usage information to the neighboring home base station on the pre-specific physical channel by means of code division. Each home base station can transmit its own subband usage information to an adjacent home base station by using a different orthogonal code. The subband usage information may be bit data indicating a working subband used by the home base station. The subband usage information may take the form of a bit map, that is, a specific sub-bit is represented by a specific bit. For example, the system is divided into 8 sub-bands, and the sub-band usage information of a certain home base station is 00110000, indicating that the home base station uses sub-band 3 and sub-band 4 as working sub-bands. The subband usage information 00110000 can be sent to the adjacent by using an orthogonal code. Home base station. The subband usage information may also be in other forms, such as a letter or a string. The orthogonal codes used by the home base stations cannot conflict. That is, one home base station and the neighboring base stations of the home base station cannot use the same orthogonal code, but the orthogonal codes can be multiplexed, and the two home base stations that are far away can Use the same orthogonal code.

FIG. 4 is a flowchart of Embodiment 3 of a method for processing a disturbance according to the present invention, including:

Step 301: When the home base station starts or discovers that the interference is relatively severe, the home base station traverses all orthogonal codes, that is, the home base station separately uses each set orthogonal code and the signal on the specific physical channel to obtain the subband. Use information. Each of the set orthogonal codes can be pre-configured in the home base station, and the home base station can use each orthogonal code and the signal on the specific physical channel respectively, and if the signal on the specific physical channel generates a phase, the positive The cross code has been used by the neighboring home base station, and the home base station can acquire the subband use information. For example, if the subband use information decoded by the orthogonal code and the signal phase is 00110000, the home base station can know that the subband 3 and the subband 4 have been used. If the home base station uses a certain orthogonal code and a signal on a specific physical channel to generate a thousand peaks, the orthogonal code is not used by the adjacent home base station, and the orthogonal frequency is not used on the specific physical channel. The subband usage information sent by the code.

Step 302: The home base station selects a subband that is not used by the neighboring home base station as a working subband; or if there is no subband that is not used by the neighboring home base station, the home base station performs a signal that generates a peak with the smallest peak of the peak. Decoding, and the subbands used in the decoded subband usage information are used as working subbands. By decoding the signal on the physical channel with the smallest peak of the phase, the decoded subband uses the subbands used in the information to minimize the interference.

Step 303: The home base station uses the specific physical channel to generate the orthogonal code of the peak of the phase peak with or without the peak of the phase as the own scrambling code, and uses the scrambling code to send the subband use information to the adjacent home base station. .

In the embodiment shown in FIG. 4, the sub-band usage information is sent to the adjacent home base station by the orthogonal code, so that the neighboring home base station can select the interference-free and/or less interference according to the sub-band usage information. The sub-band acts as a working sub-band, and the operator does not need to plan the working sub-band of the home base station in advance. And deployment, the home base station in each cell can flexibly select the working sub-band, and solve the interference problem between the home base stations.

FIG. 5 is a schematic structural diagram of Embodiment 1 of a home base station according to the present invention, including: an acquisition module 11 and a selection module 12 connected to each other, where the acquisition module 11 is configured to acquire sub-band usage information sent by an adjacent home base station, The usage information is used to indicate the information of the working sub-band used by the home base station; the selection module 12 is configured to select the sub-band with the least interference and/or undisturbed as the working sub-subject according to the sub-band usage information acquired by the obtaining module 11 band.

In the embodiment shown in FIG. 5, the acquiring module in the home base station acquires the subband usage information of the neighboring home base station, so that the selecting module can select the interference free and/or the least interference according to the subband usage information. The sub-band acts as its own working sub-band. The operator does not need to plan and deploy the working sub-band of the home base station in advance. The home base station in each cell can flexibly select the working sub-band to solve the interference problem between the home base stations.

The embodiment shown in FIG. 5 may further include a first sending module 13 connected to the selecting module 12 for transmitting subband usage information to an adjacent home base station through a specific physical channel to select The working sub-band selected by module 12 is notified to the adjacent home base station.

FIG. 6 is a schematic structural diagram of Embodiment 2 of a home base station according to the present invention. In the figure, the obtaining module 11 includes a first obtaining unit 11a, and the selecting module 12 includes a first selecting unit 12a, a first acquiring unit 11a and a first selecting unit 12a. connection. The first acquiring unit 11a is configured to acquire signal power on at least one resource unit of a specific physical channel, and a mapping relationship between a resource unit and a sub-band of a specific physical channel, and acquire sub-band usage information of the adjacent home base station. The first selecting unit 12a is configured to use the signal power on the at least one resource unit of the specific physical channel acquired by the first acquiring unit 11a, and when there is a resource unit with the same signal power and low noise level, the signal power and the bottom are The subband corresponding to the resource unit with the same noise level is used as the preferred subband, and one subband is selected as the working subband from the preferred subband. When there is no resource unit with the same signal power and the same level of noise, the resource with the smallest signal power is selected. The sub-band corresponding to the unit acts as a working sub-band. When the power of a signal on a resource unit is of the same order of magnitude as the noise floor, the subband corresponding to the resource unit may be considered not to be any Used by the home base station. The power of the signal on the resource unit is small, indicating that the sub-band corresponding to the resource unit is occupied by a smaller number of home base stations, and the interference received on the sub-band is also smaller.

Specifically, the home base station may acquire a mapping relationship between the sub-band and the resource unit of the specific physical channel in advance. When the first acquiring unit 11a acquires the signal power of the certain resource unit, the sub-corresponding to the resource unit may be determined. The band is already occupied, which is equivalent to the first acquisition unit 11a acquiring the subband usage information of the neighboring home base station.

When the first selection unit 12a selects one sub-band from the preferred sub-band as the working sub-band, it may be randomly selected, or one sub-band may be selected as the working sub-band according to a specific algorithm or rule.

The first sending module 13 may include a first sending unit 13a, configured to send a signal to the resource unit corresponding to the working sub-band selected by the first selecting unit 12a by using a specific physical channel. Adjacent to the home base station.

FIG. 7 is a schematic structural diagram of Embodiment 3 of a home base station according to the present invention. In the figure, the obtaining module 11 includes a second acquiring unit 1 ib, and the selecting module 12 includes a second selecting unit 12b, a second acquiring unit 1 ib and a second selection. Unit 12b is connected. The second obtaining unit l ib is configured to obtain the bit data for indicating the working sub-band used by the home base station by using the set orthogonal code and the signal on the specific physical channel. Specifically, each of the set orthogonal codes may be pre-configured in the home base station, and the second acquiring unit 1 ib may use each orthogonal code and the signal on the specific physical channel respectively, if the signals on the specific physical channel generate phases. Thousand peaks indicate that the orthogonal code has been used by the neighboring home base station, and the second obtaining unit 1 ib can acquire bit data for indicating the working subband used by the home base station. The second selecting unit 12b is configured to select, according to the bit data of the working subband used by the second acquiring unit 1ib to indicate the working subband used by the home base station, a subband that is not used by the neighboring home base station as a working subband; When there is a sub-band that is not used by the adjacent home base station, the sub-band used in the sub-band use information decoded by the signal which produces the smallest peak of the phase peak is selected as the working sub-band.

The first sending module 13 may include a second sending unit 13b, configured to use, by using a specific physical channel, an orthogonal code that generates a peak of the peak of the phase or has no peak of the phase as its own scrambling code, and uses the scrambling code to The subband use information is sent to the adjacent home base station, and the second selection unit 12b is selected. The selected working sub-band is notified to the adjacent home base station.

In the home base station provided by the embodiment of the present invention, the acquisition module acquires the subband usage information of the neighboring home base station, so that the selection module can select the subband that is not interfered and/or least interfered according to the subband usage information. The working sub-band of the user does not require the operator to plan and deploy the working sub-band of the home base station in advance. The home base station in each cell can flexibly select the working sub-band to solve the interference problem between the home base stations.

The embodiment of the present invention further provides a method for processing a interference. The home base station sends the sub-band usage information to the home base station adjacent to the home base station by using a specific physical channel, to notify the neighboring home base station of the selected working node. Band, where a specific physical channel is used for subband usage information transmitted between the bearer home base stations.

Specifically, the home base station sends a signal to the home base station adjacent to the home base station with a fixed power on a resource unit corresponding to its working subband through a specific physical channel; or the home base station adopts a specific physical channel, adopts a positive The cross-code will be used to indicate that the bit data of the working sub-band used by the home base station is transmitted to the home base station adjacent to the home base station.

In this embodiment, the home base station transmits its own sub-band usage information to the neighboring home base station, so that the neighboring home base station can select the sub-band with the least interference and/or no interference as its own working frequency. Solved the problem of interference between home base stations.

The embodiment of the present invention further provides a home base station, which may include a second sending module, where the second sending module includes a third sending unit, and the third sending unit is configured to use a resource unit corresponding to its working sub-band through a specific physical channel. Sending a signal to the neighboring home base station at a fixed power to notify the neighboring home base station of the selected working sub-band; or the second sending module may include a fourth sending unit, where the fourth sending unit is configured to For a specific physical channel, the subband usage information is transmitted to the adjacent home base station using an orthogonal code to notify the adjacent home base station of the selected working subband.

In this embodiment, the home base station sends its own subband usage information to the neighboring home base station through the second sending module, so that the neighboring home base station can select the least interfered and/or undisturbed. As a working frequency of the subband, the subband solves the interference problem between the home base stations.

It should be noted that the above embodiments are only intended to illustrate the technical solutions of the present invention and are not to be construed as limiting the embodiments of the present invention. The technical solutions of the present invention may be modified or equivalently substituted, and the modified technical solutions may not deviate from the spirit and scope of the technical solutions of the present invention. Those skilled in the art can understand that the above embodiments are only a preferred embodiment of the present invention, and the present invention is not limited thereto, and other similar modifications and changes are within the scope of the patent.

The term "receiving" in the above embodiments of the present invention may be understood as actively acquiring information from other modules or receiving information sent by other modules. The above modules may be combined into one module, or may be further split into multiple sub-modules. The instructions are related to hardware completion, and the program can be stored in a computer readable storage medium.

The serial numbers of the above-described embodiments of the invention are merely for the purpose of description and do not represent the advantages and disadvantages of the embodiments.

The solution described in the claims is also the scope of protection of the embodiments of the present invention.

The above description is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A method for processing a disturbance, characterized in that it comprises:

The home base station that needs to perform the interference processing acquires the sub-band usage information sent by the first home base station, where the first home base station is adjacent to the home base station, where the sub-band usage information is used to indicate the first home a working sub-band used by the base station;

The home base station selects the subband with the least interference and/or is not disturbed as the working subband of the home base station according to the acquired subband usage information.

2. The method of claim 1 wherein

The sub-band usage information includes signal power transmitted by a resource unit on a specific physical channel, where the specific physical channel is used to carry the sub-band usage information;

The home base station that needs to perform the interference processing acquires the subband usage information sent by the first home base station, and includes:

The home base station that needs to perform the interference processing acquires the signal power on the at least one resource unit of the specific physical channel, and determines the corresponding to the resource unit according to the mapping relationship between the resource unit and the sub-band of the specific physical channel. A subband has been occupied to determine subband usage information of the neighboring home base station;

The home base station selects a subband with the least interference and/or is not disturbed as the working subband of the home base station according to the acquired subband usage information, including:

If the signal power and the noise floor are on the same level, the home base station selects a sub-band corresponding to the resource unit with the same signal power and the same number of noise levels as the preferred sub-band, and selects from the preferred sub-band. a subband as a working subband of the home base station;

If there is no resource unit of the same signal power and the same number of noise floor, the sub-band corresponding to the resource unit with the smallest signal power is selected as the working sub-band of the home base station.

3. The method of claim 1 wherein:

The subband usage information includes: a ratio indicating a working subband used by the first home base station Special data

The home base station that needs to perform the interference processing uses a set orthogonal code with a signal on a specific physical channel, and performs decoding to determine the sub-band usage information, where the specific physical channel is used to carry the sub-band. With usage information;

If there is a subband that is not used by the first home base station, the home base station selects the subband that is not used by the first home base station as a working part of the home station according to the bit data. Belt

If there is no subband that is not used by the adjacent home base station, the home base station decodes a signal that produces the smallest peak of the coherent peak, and uses the subband indicated by the decoded subband use information as the family. The working subband of the base station.

The method according to any one of claims 1 to 3, further comprising: the home base station transmitting subband usage information to the first home base station by using a specific physical channel, and notifying the The working subband selected by the home base station by the first home base station, where the specific physical channel is used to carry the subband usage information.

The method according to claim 4, wherein the sending, by the home base station, the sub-band usage information to the first home base station by using a specific physical channel, includes:

The home base station sends a signal to the first home base station at a fixed power on a resource unit corresponding to a working sub-band of the home base station by using the specific physical channel.

The method according to claim 4, wherein the sending, by the home base station, the sub-band usage information to the first home base station by using a specific physical channel includes:

The home base station adopts, by using the specific physical channel, an orthogonal code with a peak of a peak of a peak generated by a signal of the specific physical channel or having no coherent peak, as a scrambling code of the home base station, The subband usage information is sent to the first home base station using the scrambling code.

7. A method for processing a disturbance, characterized in that it comprises:

The second home base station transmits the subband usage information to the home base station adjacent to the second home base station by using a specific physical channel, where the subband usage information includes a working subband selected by the second home base station, so that The home base station selects, as the working sub-band of the home base station, a sub-band that is least interfered with and/or is not interfered according to the acquired sub-band usage information, where the specific physical channel is used for the bearer The statement uses information.

The method according to claim 7, wherein the second home base station sends the subband usage information to the home base station adjacent to the second home base station by using a specific physical channel, including: The second home base station sends a signal to the home base station adjacent to the second home base station with a fixed power on the resource unit corresponding to the working sub-band of the second home base station by using the specific physical channel; or

Transmitting, by the second home base station, bit data for indicating a working subband of the second home base station to a home base station adjacent to the second home base station by using the orthogonal code; or ,

The second home base station adopts, by using the specific physical channel, an orthogonal code with a peak of a peak of a peak generated by a signal of the specific physical channel or having no peak of the phase as a scrambling code of the second home base station. And using the scrambling code to send the subband usage information to the home base station adjacent to the second home base station.

9. A home base station, comprising:

An obtaining module, configured to acquire subband usage information sent by the first home base station, where the first home base station is adjacent to the home base station, and the subband usage information is used to indicate the work used by the first home base station Subband;

And a selection module, configured to select, according to the subband usage information acquired by the acquiring module, a subband with minimal interference and/or no interference as a working subband.

The home base station according to claim 9, wherein the acquiring module includes An acquisition unit,

The first acquiring unit is configured to acquire signal power on at least one resource unit of a specific physical channel, and determine, according to a mapping relationship between a resource unit and a subband of the specific physical channel, by determining, corresponding to the resource unit a subband has been occupied to determine subband usage information of the first home base station;

The selection module includes a first selection unit,

The first selecting unit is configured to: according to the signal power on the at least one resource unit of the specific physical channel acquired by the first acquiring unit, when the signal power and the low noise level on the resource unit are the same, The sub-band corresponding to the resource unit having the same signal power and the same number of noise levels as the preferred sub-band, and one sub-band is selected as the working sub-band from the preferred sub-band; when there is no resource unit with the same signal power and the same number of noise levels When the subband corresponding to the resource unit with the smallest signal power is selected as the working subband.

The home base station according to claim 9, wherein the acquiring module includes a second acquiring unit, and the second acquiring unit is configured to use the set orthogonal code to be related to a signal on a specific physical channel. And performing decoding to determine bit data for indicating a working sub-band used by the home base station; the selecting module includes a second selecting unit, where the second selecting unit is configured to acquire according to the second acquiring unit Bit data for indicating a working subband used by the home base station, selecting a subband not used by the first home base station as a working subband; when there is no subband not used by the first home base station Decoding the signal that produces the smallest peak of the phase peak, and using the subband indicated by the decoded subband using information as the working subband.

The home base station according to any one of claims 9-11, further comprising a first sending module, configured to send subband usage information to the first home by using the specific physical channel And the base station is configured to notify the neighboring home base station of the working sub-band selected by the selecting module, where the specific physical channel is used to carry the sub-band usage information.

The home base station according to claim 12, wherein the first sending module includes a first sending unit, and the first sending unit is configured to pass the specific physical channel, in the first Selecting, on the resource unit corresponding to the working sub-band selected by the unit, transmitting a signal to the adjacent home base station at a fixed power.

The home base station according to claim 12, wherein the first sending module includes a second sending unit, and the second sending unit is configured to adopt the specific physical channel by using the specific physical channel. The signal generated by the peak of the peak is the smallest or the orthogonal code of the peak is not generated as the scrambling code of the home base station, and the subband use information is sent to the first home base station by using the scrambling code. The working sub-band selected by the second selection unit is notified to the adjacent home base station.

15. A home base station, comprising:

a second sending module, configured to send subband usage information to a home base station adjacent to the home base station by using a specific physical channel, where the subband usage information includes a work selected by a home base station that sends the subband usage information a subband, such that the home base station selects a subband with minimal interference and/or interference as a working subband of the home base station according to the acquired subband usage information, where the specific physical channel is used. The sub-band usage information is carried.

The home base station according to claim 15, wherein the second sending module includes a third sending unit, where the third sending unit is configured to use the specific physical channel, and the home base station And transmitting, by the fixed power, the signal to the home base station adjacent to the home base station; or the second sending module includes a fourth sending unit, where the fourth sending unit is configured to: Transmitting, by the orthogonal code, bit data indicating a working subband of the home base station to the home base station adjacent to the home base station by using the orthogonal code.