WO2012000249A1

WO2012000249A1 - Method and system for realizing co-channel interference monitoring and disposal

Info

Publication number: WO2012000249A1
Application number: PCT/CN2010/077719
Authority: WO
Inventors: 王忠磊
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-06-30
Filing date: 2010-10-13
Publication date: 2012-01-05
Also published as: CN102316490B; CN102316490A

Abstract

A method and system for realizing co-channel interference monitoring and disposal are provided. The method includes: obtaining the wireless configuration information of a service base station and a target base station; according to the obtained wireless configuration information, calculating whether the co-channel interference exists and the degree of the co-channel interference; according to the wireless configuration status of the service base station and the target base station, providing the optimum scheme for reducing the co-channel interference, thereby controlling and changing the frequency band of the service base station, and reducing the degree of the co-channel interference in Worldwide Interoperability for Microwave Access(WiMAX) network effectively.

Description

TECHNICAL FIELD The present invention relates to the same-frequency interference monitoring and processing technology in a WiMAX wireless communication system, and particularly relates to a similar frequency monitoring between adjacent cells. Processing methods and systems. Background technique

WiMAX (Worldwide Interoperability for Microwave Access, also known as 802.16 wireless metropolitan area network) system, like all other communication systems, also has an inherent problem, that is, the frequency band resource problem. In many commercial environments, WiMAX operators usually only have access to limited frequency band resources. Therefore, in some hotspot areas, neighboring cells use the same frequency point. When a large number of stations are opened and a number of device vendors are co-networking, the entire network configuration cannot be accurately known, or human error is more likely to occur, resulting in the same frequency interference between adjacent cells in the network, thus affecting The network coverage quality and user experience feel in these areas. SUMMARY OF THE INVENTION The main technical problem to be solved by the present invention is to provide a method and system for implementing the same-frequency interference monitoring and processing between adjacent cells in a WiMAX system, which can effectively reduce the same-frequency interference in the WiMAX network. To solve the above technical problem, the present invention provides a method for implementing the same-frequency interference monitoring and processing, including: acquiring wireless configuration information of a service base station and a target base station; and monitoring whether the serving base station and the target base station are based on the acquired wireless configuration information. There are the same frequency interference, and the same frequency interference degree; According to the monitored same frequency interference information, the wireless configuration of the serving base station is optimized. In an embodiment, the method further includes: extending an RRM (Radio Resource Management) response message, adding, in the RRM response message body, the radio configuration information of the subordinate base station to form an extended RRM response message; And the wireless configuration information of the target base station includes: The serving base station and the target base station send an RRM request message, and obtain the wireless configuration information of the serving base station and the target base station from the extended response message according to the extended RRM response message fed back by the serving base station and the target base station. Whether the monitoring service base station and the target base station have the same frequency interference, and the same frequency interference degree include: whether the physical subchannel mapped in the serving base station and the target base station is repeatedly determined according to the same logical subchannel, whether there is the same frequency Disturbance; and determine the degree of co-frequency interference according to the repetition ratio. The determining of the physical subchannel repetition includes: performing the same-frequency interference monitoring of the downlink subframe and the same-frequency interference monitoring of the uplink subframe according to the mapping relationship between the physical subchannel and the logical subchannel in the uplink and downlink subframes. The monitoring of the same-frequency information, the wireless configuration optimization of the service base station includes: determining, according to the adjustment space of the wireless base configuration parameter of the serving base station, a service that can reduce the degree of repetition of the physical sub-channel in the uplink-downlink subframe The base station wireless configuration parameters are used to optimize the wireless configuration of the serving base station using the serving base station wireless configuration parameters. A system for realizing automatic frequency monitoring and processing of the same frequency, including: a wireless configuration information acquiring unit, configured to acquire wireless configuration information of the service base station and the target base station; and the same frequency monitoring unit, configured to be acquired according to The wireless configuration information is used to monitor whether the serving base station and the target base station have the same frequency interference and the same frequency interference degree; and the optimization unit is configured to perform wireless configuration optimization on the serving base station according to the monitored same frequency interference information. In an embodiment, the system further includes an RRM response message extension unit, configured to add, in the RRM response message body, the wireless configuration information of the associated base station to form an extended RRM response message; and the wireless configuration information acquiring unit acquires the information mode. The method includes: sending, by using the RRM request message to the serving base station and the target base station, acquiring the wireless configuration information of the base station according to the extended RRM response message fed back by the serving base station and the target base station, and acquiring the wireless information of the monthly base station and the target base station from the extended response message. Configure the message. The manner of performing the same frequency monitoring by the same frequency monitoring unit includes: determining whether there is a same frequency interference in the physical subchannel mapped in the serving base station and the target base station according to the same logical subchannel; The repetition ratio determines the degree of co-frequency interference. The determining, by the same-frequency interference monitoring unit, the physical sub-channel repetition includes: performing the same-frequency interference monitoring of the downlink subframe and the same as the uplink subframe according to the mapping relationship between the physical sub-channel and the logical sub-channel in the uplink-downlink subframe Frequency thousand 4 especially monitoring. The optimization unit performs wireless configuration optimization on the serving base station according to the monitored intra-frequency interference information in the following manner: According to the adjustment space of the wireless configuration parameter of the monthly service base station, it is determined that the physical medium in the uplink and downlink subframes can be lowered. The serving base station radio configuration parameters of the subchannel repetition degree are used to optimize the wireless configuration of the serving base station using the serving base station parameters. A system for implementing automatic monitoring and processing of the same frequency interference includes: a serving base station, a target base station, an access gateway, and a background configuration unit; wherein the serving base station is configured to send the RRM request to be forwarded to the office through the access gateway a target base station, the target base station is configured to feed back an extended RRM response message to the service base station by using the access gateway; the service base station is further configured to acquire the target base station from the RRM response information. Wireless configuration information, monitoring whether there is a same frequency, and the same frequency, and transmitting the monitoring result to the background configuration unit; the background configuration unit is configured to wirelessly configure the serving base station according to the received monitoring result. optimization. In a type of embodiment, the serving base station includes an intra-frequency interference monitoring and processing unit, and the same-frequency interference monitoring and processing unit is configured to monitor whether there is a frequency interference, and a frequency interference degree. And send the monitoring results to the background configuration unit. The invention has the following beneficial effects:: by acquiring the wireless configuration information of the serving base station and the target base station, monitoring whether the serving base station and the target base station have the same frequency interference, and the same frequency interference degree, and determining the wireless base of the serving base station that reduces the same frequency interference. The configuration optimization scheme optimizes the wireless configuration of the serving base station, effectively reducing the frequency interference of the same frequency in the WiMAX network, and improving the network coverage quality. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing the working principle of an embodiment of a WiMAX wireless communication system according to the present invention; FIG. 2 is a model diagram showing a consistent zone size division between adjacent cells in the embodiment of the present invention; FIG. 3 is a neighboring cell in the embodiment of the present invention; FIG. 4 is a flow chart of an embodiment of a method for monitoring and processing the same frequency interference in the WiMAX wireless communication system according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be further described in detail by way of specific embodiments with reference to the accompanying drawings. As shown in FIG. 1 , a WiMAX system of the present invention implements automatic monitoring of intra-frequency interference between adjacent cells. A preferred embodiment of the method of measurement and processing is a schematic diagram of the operation of a WiMAX wireless communication system. The RRM message processing unit 112 of the monthly base station 110 sends a radio configuration request message to the access gateway (AGW) 100, and the access gateway directly forwards the message to the RRM message processing unit 122 of the target base station 120, where the target base station 120 The RRM message processing unit 122 acquires the wireless configuration information of the target base station 120 from the configuration processing unit 121 of the target base station 120, and then returns the information to the access gateway 100 through the RRM response message, where the RRM response message is an extended RRM response message, ie Adding the relevant parameters of the same-frequency interference detection to the RRM response message body of the existing protocol constitutes an extended RRM response message; the access gateway 100 forwards the message back to the serving base station 110 to complete the 4 error reporting procedure of the RRM message. After receiving the RRM response message forwarded by the access gateway 100, the RRM message processing unit 112 of the monthly service base station 110 extracts the parameter set required by the intra-frequency interference monitoring and processing unit 113 after processing the message. After receiving the wireless configuration information of the target base station 120 provided by the RRM message processing unit 112, the intra-frequency interference monitoring and processing unit 113 of the serving base station uses the same-frequency interference monitoring mechanism (see below) provided by the present invention to determine and Output the same-frequency interference level of neighboring cells, and optimize the configuration scheme for optimally reducing the same-frequency interference. The scheme is sent to the background configuration unit (EMS) 200. The background configuration unit 200 optimizes the configuration of the service base station 110 according to the optimization scheme of the same frequency on the monitoring and processing unit 113. As shown in FIG. 4 and in conjunction with FIG. 1, a specific embodiment of a method for realizing automatic frequency-interference monitoring and processing between adjacent cells in a WiMAX system, the same-frequency interference monitoring and processing process of a neighboring cell in a serving base station The flow of the specific embodiment is as follows: S401: The monthly service base station 110 starts, and sends a wireless configuration request message to the access gateway 100 through the RRM message processing unit 112.

5402. The access gateway forwards the message to the RRM message processing unit 122 of the target base station 120.

5403, 404, the RRM message processing unit 122 of the target base station 120 receives the RRM radio configuration request message, and obtains the wireless configuration information of the target base station 120 by the configuration processing unit 121 of the target base station.

S405, the target base station 120 feeds back the RRM response message to the access gateway 100, where the RRM response message is an extended RRM response message, that is, the radio configuration information of the associated base station is added to the RRM response message body.

5406, the access gateway 100 forwards the message to the RRM message processing unit 112 of the serving base station, and the RRM message processing unit 112 of the monthly base station 110 receives the RRM response message. Thereafter, the wireless configuration information of the target base station 120 is extracted and sent to the intra-frequency interference monitoring and processing unit 113 of the serving base station.

5408. The intra-frequency interference monitoring and processing unit 113 of the serving base station 110 calculates the same-frequency interference degree between the serving base station 110 and the target base station 120 according to the same-frequency interference monitoring mechanism proposed by the present invention, and optimizes the wireless configuration. Send to the background configuration unit 200.

5409. The background configuration unit 200 notifies the configuration processing unit 111 of the monthly base station 110 according to the wireless configuration optimization scheme of the service base station 110, and completes wireless configuration optimization for the service base station 110.

5410, 411, 412, the configuration processing unit 111 of the monthly service base station 110 notifies the RRM message processing unit 112 of the monthly service base station to complete the monitoring and processing optimization after the configuration change is completed, and the serving base station RRM message processing unit The access gateway 100 then transmits an RRM acknowledgement message to the target base station 120 by forwarding of the access gateway 100. In summary, the present invention enables the WiMAX system to automatically monitor and process the same-frequency interference in the case of using the same-frequency networking, thereby greatly improving the coverage quality of the system and reducing the network interference of the same-frequency interference. Impact. A major innovation of the present invention is the extension of the RRM response message, in the standard

In the NWG version 1.3.1, the RRM response message carries some wireless configuration information, but the information cannot implement complete intra-frequency interference detection. Therefore, the present invention proposes to increase all parameters of the same-frequency interference detection in the RRM response message. The implementation of the same frequency interference monitoring and processing mechanism of the present invention is described in detail below. When refined to ZONE (region) as the basic unit, the principle of the mechanism is to determine whether the ZONE corresponding to the two base stations has the same frequency interference and the same frequency interference when the same frequency point is used by the neighboring base stations. To the extent, and through the co-frequency interference monitoring processing unit of the serving base station, the wireless configuration optimization scheme for optimally reducing the same frequency is calculated. In the judgment of ZONE, it is mainly determined whether there is a repetition of the physical subchannel mapped by the same logical subchannel corresponding to the location ZONE of the neighboring base station, and if there is a repetition, there must be a frequency of the same frequency, and the two are judged according to the repetition ratio. The degree of co-frequency interference of neighboring cells in this group of corresponding ZONEs. For a simple example, when the base station transmits data, it is coded according to a logical subchannel. If both base stations A and B transmit data on logical subchannel 1, then A maps the logical subchannel to the physical subchannel. And 映射 map logical subchannels to physical subchannels/? On, then the base station Α and Β actually transmit data will not cause interference. In this way, all logic will be The subchannels and their mapped physical subchannels are counted in a repeating ratio, and the degree of co-frequency interference of the base stations A and B can be determined. According to the definition of IEEE 802.16e (standard for mobile broadband wireless access), each downlink or uplink subframe can contain multiple ZONEs, the size and location of each ZONE, and the logical subchannels and physical subchannels used. It is determined by the base station configuration. The parameters involved are:

The NWG1.3.1 original message format contains parameters (see the R6 Radio_Config_Update_Rpt parameter table of the IEEE 802.16e protocol): Frequency: Frequency (in DCD Setting); UL allocated subchannels bitmap: Upstream subframe indicates the used subchannel (UCD Setting;); UL Permbase: Permbase of the uplink subframe mandatory zone, used to calculate the physical subchannel (in UCD Setting) of the subchannel mapping. The parameters of the extended RRM response message proposed by the present invention are as follows:

In the table:

Preamble Index: Determines the segment ID used (the fan ID;); Used Subchannel bitmap (the bitmap using the subchannel;): Determines the downstream mandatory zone to use The logical subchannel group used, and the optional zone do not specify a logical subchannel group when all subchannels are used;

DL Zone Qty: Downstream selectable zone number; DL Zone Index: Downstream selectable zone index; Indicator to use all DL subchannels: Indicates whether the current downlink optional zone uses all subchannels;

DL zone permutation base: Permbase (replacement base) indicating the current downlink optional zone, used to calculate the physical subchannel of the logical subchannel mapping;

DL zone size: the size of the current downlink optional zone; UL Zone Qty: the number of upstream optional zones;

UL Zone Index: index of the upstream optional zone;

Indicator to use all UL subchannels: Indicates whether the current uplink optional zone uses all subchannels;

UL zone permutation base: Permbase used by the current upstream optional zone to calculate the physical subchannel of the logical subchannel mapping;

UL zone size: the size of the current upstream optional zone;

The mapping relationship between the physical subchannel and the subchannel in the WiMAX OFDMA PUSC is defined in the 803.16e protocol. The mapping between the physical subchannel and the logical subchannel in the uplink subframe and the downlink subroutine are respectively provided in the protocol. The mapping relationship between physical subchannels and logical subchannels in a frame. The same-frequency interference monitoring and processing algorithm flow is: First, it is determined whether the serving base station and the neighboring cell use the same frequency point. If not, the direct return does not have the same frequency, especially if: The access gateway forwards the RRM wireless configuration request. The message is sent to the RRM message processing unit of the target base station, and after receiving the RRM radio configuration request message, the RRM message processing unit of the target base station acquires the wireless configuration information of the target base station from the configuration processing unit of the target base station. To determine the downlink same-frequency interference, the specific process is as follows: First, determine whether the downlink mandatory zone and the optional zone that does not use all the subchannels have the same frequency. In the WiMAX system, the downlink mandatory zone does not use all the subchannels. The optional zone has a logical subchannel and a physical subchannel mapped according to a fixed sequence (RenumberingSeqeunce). Therefore, it is only necessary to determine whether the logical subchannel of the corresponding location zone is repeated. And judging the sub-channels used by the above two types of zones, according to the 802.16e protocol, the parameters are judged by the parameters Preamble Index and Used Subchannel bitmap, Indicator to use all DL subchannels. The judgment process is specifically as follows: As specified in the protocol, the Preamble Index can be used to determine the segment used by the base station; the 802.16e also specifies that the Segment 0 must include the SubChannel Group 0, and the Segment 1 must include the Subchannel Group 2 , Segment 2 must contain SubChannel Group 4, which means that if the Segment is the same, there must be the same frequency

4, in particular, the output 4 report regulations Segment conflict, and an optimized configuration scheme for the Preamble Index, so that the two types of zones above the two base stations belong to different segments. If the neighboring base stations belong to different segments, the subchannel group used by the two types of zones is described by the Used Subchannel bitmap field. If it is determined that the subchannel groups used by the two base stations are duplicated, it is judged that there is the same frequency interference, and the output report regulations are The subchannel group conflicts, and an optimized configuration scheme for the Used Subchannel bitmap is given, so that the subchannel groups used on the two types of zones above the two base stations are not repeated. Secondly, it is judged that the downlink of all the subchannels of the downlink uses the same frequency of the same frequency. In the WiMAX system, the downlink uses all the optional channels of the subchannel, and the logical subchannel and the physical subchannel are in the order of ¹ J (RenumberingSeqeunce ) Mapping with Permbase's offset, as described in 802.16e, with the parameters DL Zone Index, DL Zone Size, DL zone permutation base and Indicator to use all DL subchannels, you can calculate the optional for each subchannel. Zone The physical subchannel mapping of each logical subchannel mapping, and then traversing all available DL zone permutation base values, and selecting the smallest of the physical subchannel repetition ratios after the same subchannel mapping is used as the recommended optimization scheme. Here, it is necessary to point out a special case. For the normal case, the division of the zone size between adjacent cells is consistent, that is, as shown in FIG. 2, the corresponding zone boundaries of the base station 1 and the base station 2 are aligned. However, the 802.16e protocol allows for flexible configuration of the zone, that is, the situation shown in FIG. 3 can exist. Therefore, in this case, the overlap between the zone and the zone is as shown in FIG. 3 for the BS (base station) 2 zone A and the BS. l zoneA and zone B, you need to calculate the two zones together, first use BS2 zone A and BS 1 zone A to traverse the DL zone permutation base according to the method described above. Optimization of the queue, the queue according to the DL zone permutation base order of best to worst, in the same manner to obtain BS2 zone A and BS 1 zone B of the DL zone permutation base team bad ¹ J, taking both the position corresponding to the first queue The same value is used as the optimal DL zone permutation base value. Then, it is necessary to judge the uplink co-channel interference, and the method is the same as the downlink subframe, except that the sub-channel allocation and the used field in the uplink and downlink subframes in the protocol are slightly different. In a WiMAX system, a mapping manner is defined between a logical subchannel of an uplink subframe and a physical subchannel. In the protocol, when the Pt sequence is fixed, the mapping relationship is determined by UL_Permbase. The specific process is as follows: First, it is determined whether the uplink mandatory zone has the same frequency interference, the PermBase value of the uplink mandatory zone is determined by the UL Permbase in the UCD Setting, and the uplink subchannel used by the uplink mandatory zone is through the UL allocated subchannels bitmap. Determining, by substituting into the foregoing formula 2, it can be judged whether the physical subchannels of the same logical subchannel mapping of the uplink mandatory zone of two neighboring base stations are duplicated, and there is a repetition ratio, according to which the degree of the same frequency interference is determined, and The UL PermBase and UL allocated subchannels bitmaps give a configuration scheme that minimizes the proportion of physical subchannels that are mapped by the same logical subchannel of the neighboring base stations. Second, the judgment of the upstream optional zone is similar to the downlink optional zone. The UL allocated subchannels bitmap, Indicator to use all UL subchannels, UL zone permutation base, UL Zone Index and UL zone size can complete the same-frequency interference monitoring and processing of the uplink optional zone, and details are not described herein. When the same-frequency interference monitoring and processing procedure is completed, and the RMC message processing unit 122 of the target base station 120 is removed according to the "access gateway 100 forwarding wireless configuration request" in the above process, the RRM message processing unit 122 performs configuration processing to the target base station again. Unit 121 forwards the "output report summary to the backend hive. The core idea of the present invention is to carry the monitoring and processing function of the same frequency interference by carrying the Radio_Config_Update_Rpt response message to the neighboring cell base station by using the Radio_Config_Update_Rpt response message involved in the above method. The same-frequency thousand-four processing unit of the monthly base station optimizes the scheme to the background configuration unit, and the background configuration unit completes the wireless configuration optimization of the monthly base station. The Radio_Config_Update_Rpt message structure of the R6 port is defined in NWG 1.3.1-4.9.3.2.1. The structure includes only the DCD (downlink channel descriptor) and the UCD (uplink channel descriptor) of the neighboring cell. The parameters related to the same-frequency interference monitoring are only the frequency of the neighboring cell. And the uplink subframe forces the zone to use Logical subchannel and Permbase, so the standard RRM response message structure cannot accurately detect the same frequency interference level of neighboring cells; the present invention proposes a new Radio Config Update Rpt response message format, which includes the present invention. All parameters required by the same frequency detection mechanism. The above is a further detailed description of the present invention in connection with the specific embodiments, and the specific implementation of the invention is not limited to the description. It will be apparent to those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the invention.

Claims

Claim

1. A method for implementing the same frequency interference monitoring and processing, comprising:

Obtaining wireless configuration information of the service base station and the target base station;

And monitoring, according to the obtained wireless configuration information, whether the serving base station and the target base station have the same frequency interference and the same frequency interference degree;

Performing wireless configuration optimization on the serving base station according to the monitored intra-frequency interference information.

The method according to claim 1, further comprising: extending a radio resource management RRM response message, adding, in the RRM response message body, the radio configuration information of the subordinate base station to form an extended RRM response message; acquiring the serving base station And the wireless configuration information of the target base station includes: transmitting the RRM request message to the serving base station and the target base station, and reporting the extended RRM response message according to the monthly service base station and the target base station, from the extended response Obtaining, in the message, wireless configuration information of the serving base station and the target base station.

The method according to claim 1 or 2, wherein monitoring whether the serving base station and the target base station have the same frequency interference, and the frequency interference level include: according to the same logical subchannel in the serving base station and the Determining whether there is a same frequency interference in the physical subchannel mapped in the target base station; and determining the same frequency interference degree according to the repetition ratio.

The method according to claim 3, wherein the determining of the physical subchannel repetition comprises: performing the same frequency of the downlink subframe according to the mapping relationship between the physical subchannel and the logical subchannel in the uplink and downlink subframes Interference monitoring and co-frequency interference monitoring of uplink subframes.

The method according to claim 4, wherein the performing wireless configuration optimization on the serving base station according to the monitored intra-frequency interference information comprises: determining, according to an adjustment space of a wireless configuration parameter of the serving base station, The serving base station wireless configuration parameter of the physical subchannel repetition degree in the uplink and downlink subframes may be reduced, and the serving base station wireless configuration optimization is performed by using the serving base station wireless configuration parameter.

6. A system for implementing the same frequency interference monitoring and processing, including:

a wireless configuration information acquiring unit, configured to acquire wireless configuration information of the serving base station and the target base station; The same frequency interference monitoring unit is configured to monitor, according to the obtained wireless configuration information, whether the serving base station and the target base station have the same frequency interference and the same frequency interference degree; the optimization unit is set to be monitored according to The same frequency interference information is used to perform wireless configuration optimization on the serving base station.

The system according to claim 6, further comprising a radio resource management RRM response message extension unit, configured to add, in the RRM response message body, the radio configuration information of the subordinate base station to form an extended RRM response message; The method for obtaining the wireless configuration information by the information acquiring unit is: sending an RRM request message to the service base station and the target base station, and reporting, by the service base station and the target base station, the extended RRM response message, The wireless configuration information of the base station is obtained in the extended response message.

The system according to claim 6 or 7, wherein the intra-frequency interference monitoring unit performs intra-frequency monitoring by: mapping physical sub-objects in the serving base station and the target base station according to the same logical sub-channel Whether there is repeated judgment on the channel whether there is co-frequency interference; and determining the degree of co-frequency interference according to the repetition ratio.

The system according to claim 8, wherein the intra-frequency interference monitoring unit performs the determination of physical sub-channel repetition in the following manner: according to the physical sub-channel and the logical sub-channel in the uplink-downlink subframe The mapping relationship performs the same-frequency interference monitoring of the downlink subframe and the same-frequency interference monitoring of the uplink subframe.

10. The system according to claim 9, wherein the optimization unit performs wireless configuration optimization on the serving base station according to the monitored intra-frequency interference information in the following manner: according to the adjustment space of the wireless configuration parameter of the serving base station, Determining a serving base station radio configuration parameter that can reduce the degree of repetition of the physical subchannel in the uplink and downlink subframes, and performing radio configuration optimization on the serving base station by using the serving base station parameter.

11. A system for implementing the same frequency monitoring and processing, the system comprising: a monthly base station, a target base station, an access gateway, and a background configuration unit;

The RRM request that the service base station is configured to send is forwarded to the target base station by using the access gateway, and the target base station is configured to feed back, by using the access gateway, the extended RRM response message to the monthly service base station;

The serving base station is further configured to: obtain the wireless configuration information of the target base station from the RRM response information, monitor whether there is a frequency interference, and a frequency interference degree, and Send the monitoring result to the background configuration unit;

The background configuration unit is configured to perform wireless configuration optimization on the serving base station according to the received monitoring result.

12. The system according to claim 11, wherein the serving base station includes an intra-frequency interference monitoring and processing unit, and the same frequency monitoring and processing unit is configured to monitor whether there is a frequency interference. And the frequency of the same frequency, and send the monitoring results to the background configuration unit.