CN104735689A - Mobile communication network air interface monitoring system - Google Patents
Mobile communication network air interface monitoring system Download PDFInfo
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- CN104735689A CN104735689A CN201510165580.4A CN201510165580A CN104735689A CN 104735689 A CN104735689 A CN 104735689A CN 201510165580 A CN201510165580 A CN 201510165580A CN 104735689 A CN104735689 A CN 104735689A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface
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Abstract
The invention discloses a mobile communication network air interface monitoring system. A signal collector receives an air interface signal, configures information according to channels of a community to be monitored and selects the method of narrow-band sampling or wide-band sampling to conduct preliminary quantization to the air interface signal; a signal processing unit receives data obtained after the preliminary quantization, selects different digital signal processing functions to demodulate the data obtained after the preliminary quantization according to the difference among network types of the community to be monitored and outputs component channel data of a single physical channel or multiple physical channels; after receiving the component channel data, a signaling analysis unit selects a processing module in the program according to the network structure of the community to be monitored, conducts processing to the data and outputs a signaling report transmitted in a logical channel; a system control unit conducts control and monitoring to the whole system in a local or a remote way. According to the system, through the combination between a software radio platform and a general-purpose computer, analysis can be conducted to signaling in upstream communication and downstream communication of a mobile communication network air interface.
Description
Technical field
The invention belongs to mobile communication network technology field, be specifically related to a kind of mobile communications network air interface monitoring system based on software and radio technique.
Background technology
Mobile communications network is the basis that mobile operator carries out runing, efficiency of operation and finally depend on the area coverage of network, the capacity of network system and service quality to the income that network operator brings, and the topmost part affecting network coverage area, power system capacity and service quality is exactly radio network interface.The air interface of mobile communication network is of paramount importance interface in mobile communication network.In the operation of mobile communication network, air interface is as the wave point communicated between mobile terminal with base station, easily be subject to the impact of various factors, exist and multiplely bring out instable factor, and the agreement of mobile communication system compare wired network interface with signaling message more complicated.When monitoring mobile communication system, key being become to the Real-Time Monitoring of air interface, could implement to analyze more accurately to network failure like this.Meanwhile, to important composition in the analysis of air interface also Mobile networks planning, the network optimization and network evaluation.Because wireless network air environment is complicated and changeable, one of focus that Mobile Network Operator is paid close attention to realizes dynamic monitoring to mobile communications network air interface exactly.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of mobile communications network air interface monitoring system, and it is by the combination of Software Radio platform and all-purpose computer, to realize analyzing the signaling of mobile communications network air interface uplink and downlink communication.
For solving the problem, the present invention is achieved by the following technical solutions:
A kind of mobile communications network air interface monitoring system, comprising:
Signal picker, receives air interface signals, and according to cell channel configuration information to be monitored, selects arrowband sampling or wideband sampling mode to carry out initial quantization to air interface signals;
Signal processing unit, after receiving the data after initial quantization, according to the difference of subzone network type to be monitored, select different signal processing function to carry out demodulation to the data after initial quantization, and export the sub-channel data of wall scroll or many physical channels;
Signaling resolution unit, after receiving sub-channel data, selects processing module in program according to subzone network structure to be monitored, after sub-channel data process, and the signaling form transmitted in output logic channel;
System control unit, to control whole system in Local or Remote mode and monitors.
Above-mentioned signal picker is preferably made up of motherboard and daughter board, and wherein motherboard receives air interface signals, and daughter board carries out initial quantization to air interface signals.
The mode of operation of above-mentioned signal processing unit has: the sub-channel data signal after demodulation being downconverted to a physical channel; Or after Choose filtering is adopted to the signal after demodulation, obtain the sub-channel data of a physical channel; Or after channelizing filtering is adopted to the signal after demodulation, obtain the sub-channel data of many physical channels.
In such scheme, signaling resolution unit specifically comprises following function:
According to communication protocol physical layer logic channel mapping relations on the physical channel, the sub-channel data block received is stored, recombinates and decode, obtains signaling in broadcast channel;
According to message related specifications in signaling in communication protocol, the system information of community to be monitored is obtained from broadcast channel, again to the parsing of message in the system information of community to be monitored, obtain the structure that community to be monitored logic channel maps on the physical channel, recombinate to Common Control Channel is descending and decodes, obtaining signaling in Common Control Channel;
Message in Common Control Channel is resolved, filter out distribution instruction storing immediately, resolve according to distribution instruction immediately, obtain the assignment information of this communication Dedicated Control Channel, carry out recombinating according to Dedicated Control Channel assignment information sub-channel data block and decode, obtaining signaling in Dedicated Control Channel;
Export this community air interface signaling form.
In such scheme, system control unit specifically comprise following function:
Automatically activated signal collector, signal processing unit and signaling resolution unit are searched for environment small area, place signal, and analyze the cell information of each community and the dominant frequency point of each community and preserve;
The dominant frequency point exporting community and this community searched selects community to be monitored to screen for user;
After user selects community, when system will scan base station, this cell information preserved, as system configuration parameter, restarts signal picker, signal processing unit and signaling resolution unit and monitors this community.
In such scheme, system control unit also comprises following function further: during startup, first detects hardware, if non-connection error has appearred in system, system control unit is by output error message.
By the combination of Software Radio platform and all-purpose computer, mobile communications network air interface signaling is analyzed, adopt software and radio technique, only need to modify the fine setting of i.e. feasible system and upgrading to program.Have more the definition of software, system also can compatible different mobile communications network or next generation network.Can system lifetim be added like this, reduce system maintenance cost and system upgrade difficulty simultaneously.Software and radio technique uses and effectively reduces the dependence of system to hardware and the cost of device fabrication.
Compared with prior art, the present invention has following features:
1, common software radio hardware level platform is adopted, when monitoring Target cell, the signals collecting of motherboard daughter board structure by changing daughter board to realize the adaptation to different structure wireless communication networks, or adopts the larger daughter board of receiving belt wide region to realize the adaptive various structures wireless communication networks of set of system.
2, general software radio software platform is adopted, by different software algorithms, can realize that multi signal collector is in parallel to carry out the sampling of multichannel arrowband or mono signal collector and signal processing unit with signal processing unit and carry out multichannel wideband sampling, system configuration is flexible.
3, according to the related specifications of channel assignment request in mobile communication network protocol and foundation, signaling resolution unit adopts software mode to carry out decoding and output report to signaling in logic channel, can better the different mobile communications network of adaptation.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the mobile communications network air interface monitoring system based on software and radio technique.
Embodiment
Based on a mobile communications network air interface monitoring system for software and radio technique, as shown in Figure 1, it is primarily of at least one signal picker, signal processing unit, signaling resolution unit and system control unit composition.Signal picker and signal processing module are all contained in general software radio platform.Signaling resolution unit and system control unit can be this locality, general headquarters or the server by high in the clouds.Signal picker output is connected with the input of signal processing unit, and the output of signal processing unit is connected with the input of signaling resolution unit, system control unit connection signal processing unit and signaling resolution unit.
When mobile device device and base station, access point or other mobile devices carry out wireless telecommunications, signal picker receives air interface signals, and system, according to cell channel configuration information to be monitored, selects arrowband sampling or wideband sampling mode by software-selectable.Signal processing unit is according to signal picker and cell structure configure generic software radio software platform to be monitored, select different signal processing function, demodulation is carried out to sampled signal, and exports the subchannel of wall scroll or many physical channels and channel information to signaling resolution unit.Signal processing unit is connected by computer network with signaling resolution unit.Signaling resolution unit can be selected processing module in program according to subzone network structure to be monitored after receiving the data of signal processing unit transmission, after sub-channel data process, and the signaling form transmitted in output logic channel.System control unit to control whole system in Local or Remote mode and monitors, when system starts, this unit can carry out software and hardware detection to system, and by Man Machine Interface feedback information, after System self-test, this unit can scan signal picker place wireless environment, feeds back cell information by Man Machine Interface, monitors by the air interface of this unit starting system to certain community.
Below the unit of system is described in detail further:
Described signal picker comprises motherboard and daughter board, the connection of daughter board and antenna, receive radio signals, by the configuration of software, the radio signal received is downconverted to configured frequency by daughter board, motherboard carries out Digital Signal Processing by the data processing centre on plate to signal after quantizing the signal after daughter board process, and the quantized data after process is sent to signal processing unit by data-interface.
Described signal processing unit receives the data after the quantification of preliminary figure signal transacting, according to the difference of subzone network type to be monitored, by the setting of software program, signal processing function different in general software radio platform is selected to carry out Digital Signal Processing to the signal after quantification.Signal processing unit can be divided into two kinds of mode of operations: the first obtains intermediate-freuqncy signal after general software radio platform motherboard carries out signal transacting in signal picker, and broadband is by the baseband signal downconverting to a physical channel after signal processing unit processes; The second obtains broadband signal after general software radio platform motherboard carries out signal transacting in signal picker, and broadband signal adopts selective filter or channel filter group structure to obtain the baseband signal of one or more physical channel by signal processing unit.
Described signaling resolution unit, according to the program of different mobile communications network configuration data processing centers, can carry out adaptation according to the change of monitoring subzone network by software adjustment.This signaling resolution unit is handled as follows:
First, according to communication protocol physical layer logic channel mapping relations on the physical channel, the sub-channel data block received is stored, recombinates and decode, obtains signaling in broadcast channel;
Then, according to message related specifications in signaling in communication protocol, detected cell system information can be obtained from broadcast channel, according to the parsing to message in cell system information, the structure that community logic channel maps on the physical channel can be obtained, recombinate to Common Control Channel is descending and decodes, obtaining signaling in Common Control Channel;
Secondly, message in Common Control Channel is resolved, filter out distribution instruction storing immediately, resolve according to distribution instruction immediately, the assignment information of this communication Dedicated Control Channel can be obtained, carry out recombinating according to Dedicated Control Channel assignment information sub-channel data block and decode, obtaining signaling in Dedicated Control Channel;
Finally, this community air interface signaling form is exported.
Described system control unit whole system run in as dispatching control center.This system control unit works as follows:
First, first detect hardware during start up system, if non-connection error has appearred in system, system control unit is by output error message;
Then, system control unit automatically activated signal collector, signal processing unit, signaling resolution unit is searched for environment small area, system place signal, and analyzes the cell information of each community and the dominant frequency point of each community and preserve;
Secondly, the dominant frequency point of the community that output system searches and this community is selected to treat community to be monitored to screen for user;
Finally, after user selects community, when system will scan base station, this cell information preserved, as system configuration parameter, restarts signal picker, signal processing unit, and signaling resolution unit is monitored this community.
Although the present invention is described by specific embodiment, specific embodiments and the drawings are not used for limiting the present invention.Those skilled in the art in the scope of spirit of the present invention, can make various distortion and improvement, but all should fall within technology contents protection range disclosed in this invention.
Claims (6)
1. mobile communications network air interface monitoring system, is characterized in that, comprising:
Signal picker, receives air interface signals, and according to cell channel configuration information to be monitored, selects arrowband sampling or wideband sampling mode to carry out initial quantization to air interface signals;
Signal processing unit, after receiving the data after initial quantization, according to the difference of subzone network type to be monitored, select different signal processing function to carry out demodulation to the data after initial quantization, and export the sub-channel data of wall scroll or many physical channels;
Signaling resolution unit, after receiving sub-channel data, selects processing module in program according to subzone network structure to be monitored, after sub-channel data process, and the signaling form transmitted in output logic channel;
System control unit, to control whole system in Local or Remote mode and monitors.
2. mobile communications network air interface monitoring system according to claim 1, it is characterized in that, described signal picker is made up of motherboard and daughter board, and wherein motherboard receives air interface signals, and daughter board carries out initial quantization to air interface signals.
3. mobile communications network air interface monitoring system according to claim 1 and 2, it is characterized in that, the mode of operation of signal processing unit has:
Signal after demodulation is downconverted to the sub-channel data of a physical channel;
Or after Choose filtering is adopted to the signal after demodulation, obtain the sub-channel data of a physical channel;
Or after channelizing filtering is adopted to the signal after demodulation, obtain the sub-channel data of many physical channels.
4. mobile communications network air interface monitoring system according to claim 1, it is characterized in that, signaling resolution unit specifically comprises following function:
According to communication protocol physical layer logic channel mapping relations on the physical channel, the sub-channel data block received is stored, recombinates and decode, obtains signaling in broadcast channel;
According to message related specifications in signaling in communication protocol, the system information of community to be monitored is obtained from broadcast channel, again to the parsing of message in the system information of community to be monitored, obtain the structure that community to be monitored logic channel maps on the physical channel, recombinate to Common Control Channel is descending and decodes, obtaining signaling in Common Control Channel;
Message in Common Control Channel is resolved, filter out distribution instruction storing immediately, resolve according to distribution instruction immediately, obtain the assignment information of this communication Dedicated Control Channel, carry out recombinating according to Dedicated Control Channel assignment information sub-channel data block and decode, obtaining signaling in Dedicated Control Channel;
Export this community air interface signaling form.
5. mobile communications network air interface monitoring system according to claim 1, is characterized in that, system control unit specifically comprise following function:
Automatically activated signal collector, signal processing unit and signaling resolution unit are searched for environment small area, place signal, and analyze the cell information of each community and the dominant frequency point of each community and preserve;
The dominant frequency point exporting community and this community searched selects community to be monitored to screen for user;
After user selects community, when system will scan base station, this cell information preserved, as system configuration parameter, restarts signal picker, signal processing unit and signaling resolution unit and monitors this community.
6. mobile communications network air interface monitoring system according to claim 5, it is characterized in that, system control unit also comprises following function further:
During startup, first detect hardware, if non-connection error has appearred in system, system control unit is by output error message.
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| CN201510165580.4A CN104735689A (en) | 2015-04-09 | 2015-04-09 | Mobile communication network air interface monitoring system |
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Cited By (3)
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| CN105744552A (en) * | 2016-03-31 | 2016-07-06 | 武汉虹信技术服务有限责任公司 | Wireless network air interface message processing apparatus and method |
| CN108430066A (en) * | 2018-01-29 | 2018-08-21 | 北京全路通信信号研究设计院集团有限公司 | Air interface data acquisition method, device and equipment based on wireless terminal module matrix |
| CN112566169A (en) * | 2020-11-20 | 2021-03-26 | 中电科仪器仪表(安徽)有限公司 | Method for monitoring air interface signal of mobile communication |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105744552A (en) * | 2016-03-31 | 2016-07-06 | 武汉虹信技术服务有限责任公司 | Wireless network air interface message processing apparatus and method |
| CN105744552B (en) * | 2016-03-31 | 2019-02-26 | 武汉虹信技术服务有限责任公司 | A kind of wireless network idle message processing unit and method |
| CN108430066A (en) * | 2018-01-29 | 2018-08-21 | 北京全路通信信号研究设计院集团有限公司 | Air interface data acquisition method, device and equipment based on wireless terminal module matrix |
| CN108430066B (en) * | 2018-01-29 | 2021-02-02 | 北京全路通信信号研究设计院集团有限公司 | Air interface data acquisition method, device and equipment based on wireless terminal module matrix |
| CN112566169A (en) * | 2020-11-20 | 2021-03-26 | 中电科仪器仪表(安徽)有限公司 | Method for monitoring air interface signal of mobile communication |
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