CN103686820A - Wireless communication network topology simulator device - Google Patents
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- CN103686820A CN103686820A CN201310695505.XA CN201310695505A CN103686820A CN 103686820 A CN103686820 A CN 103686820A CN 201310695505 A CN201310695505 A CN 201310695505A CN 103686820 A CN103686820 A CN 103686820A
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Abstract
The invention discloses a wireless communication network topology simulator device which comprises a topology generating module, a signal processing module and multiple simulation channels. The topology generating module generates wireless network topology information meeting the setting requirements at random according to received isolated node parameters, received network node number parameters and received network structure setting parameters, and sends the wireless network topology information to the signal processing module; the multiple simulation channels enable intermediate frequency simulation signals sent by external to-be-detected wireless communication devices to be converted into base band digital signals respectively, and send the base band digital signals to the signal processing module; the signal processing module conducts time delay, attenuation and combining on the base band digital signals input from the simulation channels, and then sends the processed base band digital signals back to the corresponding simulation channels; the simulation channels enable the received base band digital signals to be converted into the intermediate frequency simulation signals to be output to external to-be-detected wireless communication. According to the wireless communication network topology simulator device, spatial distribution network topology structures can be simulated, the connected detected devices conduct signal transmission through the simulator device, and the wireless networking capacity of the detected devices is accordingly detected.
Description
Technical field
The present invention relates to a kind of wireless communication network topology simulator apparatus, be specially adapted to the check to the debugging of Wireless Telecom Equipment networking function and networking capability index.
Background technology
For the wireless networking ability to Wireless Telecom Equipment accurately and effectively, test, need to produce one with the similar network topology of actual application environment, and wireless communication network topology simulator is the effective tool that generates wireless communication network topology true to nature.Therefore, research wireless communication network topology simulator has very important significance.But the present situation of current domestic complicated wireless communication network topology simulator is to there is no relevant former.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of wireless communication network topology simulator apparatus, the network topology structure that virtual space distributes, and the tested equipment of access carries out signal transmission by simulator, thereby tests the wireless networking ability of tested equipment.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A wireless communication network topology simulator apparatus, comprises topological generation module, signal processing module and multi-channel analog passage; Isolated node parameter, number of network node parameter and network configuration setup parameter that topology generation module arranges according to the user who receives, random generation meets the wireless network topology information that customer parameter is set requirement, and this wireless network topology information is sent to signal processing module; After being converted to baseband digital signal, the analog intermediate frequency signal that multi-channel analog passage sends outside each Wireless Telecom Equipment to be measured respectively sends to signal processing module; The wireless network topology information that signal processing module sends according to topological generation module, carries out time delay, decline and synthetic processing to the baseband digital signal from each analog channel input, and the baseband digital signal of finishing dealing with is sent it back to corresponding analog channel; Analog channel is converted to analog intermediate frequency signal by the baseband digital signal receiving and exports in outside radio communication to be measured.
Wherein, described analog channel is comprised of digital interface, D/A modular converter, the first low pass filter, the first frequency mixer, the first local oscillator, the second low pass filter, a SMA adapter, the 2nd SMA adapter, amplifier, the second frequency mixer, the 3rd low pass filter, A/D modular converter and the second local oscillator; Digital interface receives the baseband digital signal after time delay, decline and synthetic processing from signal processing module output, and exports this baseband digital signal to D/A modular converter; D/A modular converter is converted to this baseband digital signal to export the first low pass filter to after base-band analog signal and carry out low-pass filtering; The first low pass filter exports the base-band analog signal after low-pass filtering to first frequency mixer, and the first local oscillator provides local oscillation signal for the first frequency mixer; The first frequency mixer up-converts to the base-band analog signal after low-pass filtering to export the second low pass filter to after analog intermediate frequency signal and carry out low-pass filtering; The second low pass filter exports the analog intermediate frequency signal after low-pass filtering to a SMA adapter, by a SMA adapter, received analog intermediate frequency signal export Wireless Telecom Equipment to be measured to; The 2nd SMA adapter accesses the analog intermediate frequency signal of Wireless Telecom Equipment to be measured output, and to the amplifier of exporting and carry out low noise amplification; Amplifier exports the analog intermediate frequency signal after low noise amplification to second frequency mixer; The second local oscillator provides local oscillation signal for the second frequency mixer, and the second frequency mixer is down-converted to the analog intermediate frequency signal after amplifying base-band analog signal and exports the 3rd low pass filter to and carries out low-pass filtering; The 3rd low pass filter exports the base-band analog signal after low-pass filtering to A/D modular converter; A/D modular converter is converted to base-band analog signal baseband digital signal and exports digital interface to; Digital interface sends to the baseband digital signal of receiving in signal processing module.
Wherein, described topological generation module is comprised of network topology generation module, isolated node determination module, network parameter computing module, data generation module and serial ports sending module; Described network topology generation module generates a wireless network topology structure at random according to the number of network node parameter of outside input and network configuration setup parameter, and exports isolated node determination module to; Isolated node determination module is according to the isolated node parameter of outside input, wireless network topology structure to the input of network topology generation module judges, court verdict is returned to network topology generation module, and the final wireless network topology structure generating of network topology generation module is sent to network parameter computing module; Network parameter computing module, according to the wireless network topology structure of input, calculates corresponding wireless network topology parameter and is sent to data generation module; Data generation module is organized wireless network topology parameter and encapsulate, and generates control command packet and is sent to serial ports sending module; Serial ports sending module by the control command Packet Generation receiving to signal processing module.
Wherein, described signal processing module is comprised of serial data receiving element, parameter processing unit, link decision unit, time delay control unit, decline control unit and signal synthesis unit; Described serial data receiving element receives from the wireless network topology information of topological generation module output, and carries out data transaction, exports parameter processing unit to after single bit data being converted to the wireless network topology information of 8bit; Parameter processing unit is converted to link connected state parameter, chain-circuit time delay parameter and link attenuation parameter the wireless network topology information of 8bit, and correspondence exports respectively link decision unit, time delay control unit and decline control unit to one by one; Link decision unit receives the multichannel baseband digital signal of multi-channel analog passage input, and according to the link connected state parameter of parameter processing unit input, the connected state of link between multi-channel analog passage is judged, the signal transmission of generation in connected state link, and export the link transmission signal of generation to time delay control unit; Time delay control unit, according to the chain-circuit time delay parameter of parameter processing unit input, carries out exporting decline control unit to after time delay processing to the link transmission signal of link decision unit input; Decline control unit is according to the link attenuation parameter of parameter processing unit input, and the link transmission signal after time delay processing that time delay control unit is inputted exports signal synthesis unit to after declining and processing; Signal synthesis unit, to the link transmission signal after time delay and attenuation processing, carries out signal for each analog channel and synthesizes, and generates multichannel baseband digital signal, and exports corresponding analog channel to.
The beneficial effect that adopts technique scheme to produce is:
The network topology structure that the present invention can virtual space distributes, the tested equipment of access carries out signal transmission by simulator, thereby tests the wireless networking ability of tested equipment.The present invention has the features such as simple, the integrated degree of circuit structure is high, stable and reliable for performance, easy to operate simply, real-time performance is good, with low cost, is applicable to the test to Wireless Telecom Equipment networking capability.
(1) friendly interface of the present invention, directly perceived, can arrange parameters such as network size, network configurations, and serial ports transmit operation is provided, and the real network topology producing is carried out to echo by the mode of drawing, and to user, provides radio network information intuitively.
(2) the network link parameter that utilization of the present invention calculates, carries out time delay and decline processing to signal transmission, improves the validity of simulator to transmission response emulation.
(3) building block of the present invention adopts extensive field programmable device to make, and therefore can by different parameters is set, realize neatly the generation of waveform frequency spectrum, and structure is simplified greatly, and cost significantly reduces.
(4) the integrated degree of the present invention is high, so volume is little, lightweight, stable and reliable for performance, and portable good, easy to maintenance, equipment maneuverability and portable ability obviously improve.
Accompanying drawing explanation
Fig. 1 is electric functional-block diagram of the present invention;
Fig. 2 is the electrical schematic diagram of analog channel of the present invention;
Fig. 3 is the electrical schematic diagram of topological generation module of the present invention;
Fig. 4 is the electrical schematic diagram of signal processing module of the present invention;
In figure: 1, topology generation module, 2, signal processing module, 3, analog channel, 11, digital interface, 12, D/A modular converter, 13, the first low pass filter, 14, the first frequency mixer, 15, the second low pass filter, 16, the one SMA adapter, 17, the 2nd SMA adapter, 18, amplifier, 19, the second frequency mixer, 20, the 3rd low pass filter, 21, A/D modular converter, 22, the first local oscillator, 23, the second local oscillator, 24, network topology generation module, 25, isolated node determination module, 26, network parameter computing module, 27, data generation module, 28, serial ports sending module, 29, serial data receiving element, 30, parameter processing unit, 31, link decision unit, 32, time delay control unit, 33, decline control unit, 34, signal synthesis unit.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
As shown in Figure 1, the present invention is a kind of wireless communication network topology simulator apparatus, comprises topological generation module 1, signal processing module 2 and multi-channel analog passage 3; Isolated node parameter, number of network node parameter and network configuration setup parameter that topology generation module 1 arranges according to the user who receives, random generation meets the wireless network topology information that customer parameter is set requirement, and this wireless network topology information is sent to signal processing module 2; After being converted to baseband digital signal, the analog intermediate frequency signal that multi-channel analog passage 3 sends outside each Wireless Telecom Equipment to be measured respectively sends to signal processing module 2; The wireless network topology information that signal processing module 2 sends according to topological generation module 1, baseband digital signal from each analog channel 3 inputs is carried out to time delay, decline and synthetic processing, and the baseband digital signal of finishing dealing with is sent it back to corresponding analog channel 3; Analog channel 3 is converted to analog intermediate frequency signal by the baseband digital signal receiving and exports in outside radio communication to be measured.
As shown in Figure 2, analog channel 3 of the present invention is comprised of digital interface 11, D/A modular converter 12, the first low pass filter 13, the first frequency mixer 14, the first local oscillator 22, the second low pass filter 15, a SMA adapter 16, the 2nd SMA adapter 17, amplifier 18, the second frequency mixer 19, the 3rd low pass filter 20, A/D modular converter 21 and the second local oscillator 23; Digital interface 11 receives the baseband digital signal after time delay, decline and synthetic processing from signal processing module 2 outputs, and exports this baseband digital signal to D/A modular converter 12; D/A modular converter 12 is converted to this baseband digital signal to export the first low pass filter 13 to after base-band analog signal and carry out low-pass filtering; The first low pass filter 13 exports the base-band analog signal after low-pass filtering to first frequency mixer 14, the first local oscillators 22 and provides local oscillation signal for the first frequency mixer 14; The first frequency mixer 14 up-converts to the base-band analog signal after low-pass filtering to export the second low pass filter 15 to after analog intermediate frequency signal and carry out low-pass filtering; The second low pass filter 15 exports the analog intermediate frequency signal after low-pass filtering to a SMA adapter 16, by a SMA adapter 16, received analog intermediate frequency signal export Wireless Telecom Equipment to be measured to; The analog intermediate frequency signal of the 2nd SMA adapter 17 access Wireless Telecom Equipment output to be measured, and to the amplifier 18 of exporting and carry out low noise amplification; Amplifier 18 exports the analog intermediate frequency signal after low noise amplification to second frequency mixer 19; The second local oscillator 23 provides local oscillation signal for the second frequency mixer 19, and the second frequency mixer 19 is down-converted to the analog intermediate frequency signal after amplifying base-band analog signal and exports the 3rd low pass filter 20 to and carries out low-pass filtering; The 3rd low pass filter 20 exports the base-band analog signal after low-pass filtering to A/D modular converter 21; A/D modular converter 21 is converted to base-band analog signal baseband digital signal and exports digital interface 11 to; Digital interface 11 sends to the baseband digital signal of receiving in signal processing module 2.
As shown in Figure 3, topological generation module 1 of the present invention is comprised of network topology generation module 24, isolated node determination module 25, network parameter computing module 26, data generation module 27 and serial ports sending module 28; Network topology generation module 24 generates a wireless network topology structure at random according to the number of network node parameter of outside input and network configuration setup parameter, and exports isolated node determination module 25 to; Isolated node determination module 25 is according to the isolated node parameter of outside input, wireless network topology structure to 24 inputs of network topology generation module judges, court verdict is returned to network topology generation module 24, and the final wireless network topology structure generating of network topology generation module 24 is sent to network parameter computing module 26; Network parameter computing module 26, according to the wireless network topology structure of input, calculates corresponding wireless network topology parameter and is sent to data generation module 27; Data generation module 27 is organized wireless network topology parameter and encapsulate, and generates control command packet and is sent to serial ports sending module 28; Serial ports sending module 28 by the control command Packet Generation receiving to signal processing module 2.
As shown in Figure 4, signal processing module 2 of the present invention is comprised of serial data receiving element 29, parameter processing unit 30, link decision unit 31, time delay control unit 32, decline control unit 33 and signal synthesis unit 34; Described serial data receiving element 29 receives from the wireless network topology information of topological generation module 1 output, and carries out data transaction, exports parameter processing unit 30 to after single bit data being converted to the wireless network topology information of 8bit; Parameter processing unit 30 is converted to link connected state parameter, chain-circuit time delay parameter and link attenuation parameter the wireless network topology information of 8bit, and correspondence exports respectively link decision unit 31, time delay control unit 32 and decline control unit 33 to one by one; Link decision unit 31 receives the multichannel baseband digital signal of multi-channel analog passage 3 inputs, and according to the link connected state parameter of parameter processing unit 30 inputs, the connected state of link between multi-channel analog passage 3 is judged, the signal transmission of generation in connected state link, and export the link transmission signal of generation to time delay control unit 32; Time delay control unit 32, according to the chain-circuit time delay parameter of parameter processing unit 30 inputs, carries out exporting decline control unit 33 to after time delay processing to the link transmission signal of link decision unit 31 inputs; Decline control unit 33 is according to the link attenuation parameter of parameter processing unit 30 inputs, and the link transmission signal after time delay processing that time delay control unit 32 is inputted exports signal synthesis unit 34 to after declining and processing; 34 pairs of the signal synthesis units link transmission signal after time delay and attenuation processing, carries out signal for each analog channel 3 synthetic, generates multichannel baseband digital signal, and exports corresponding analog channel 3 to.
Serial data receiving element 29 in Fig. 4, parameter processing unit 30, link decision unit 31, time delay control unit 32, decline control unit 33 and signal synthesis unit 34 all adopt same U.S. altera corp to produce Stratix II Series FPGA module making.
The concise and to the point operation principle of the present invention is as follows:
The present invention generates for realizing the simulation of wireless communication network topology, employing facilitates friendly man-machine interface so that user arranges the various parameters of wireless network, network size, network shape etc. can arbitrarily be controlled, convenient, flexible, these parameters process by software the actual wireless network information that produces, through hardware handles, be converted to channel control signals, realize the transmission of wireless signal and control.Topology generation module 1 for user man-machine interface is provided in case input cordless communication network parameters, then software produces corresponding network topological information voluntarily at random, by serial ports, delivers to hardware; The effect of analog channel 3 is input, the output channels that realize analog signal, and the signal of realizing between Devices to test and signal processing module 2 is mutual; The control parameter that signal processing module 2 sends according to topological generation module 1, carries out time delay, decline, the processing such as synthetic to the digital signal of each analog channel input, and the signal of finishing dealing with is sent to the digital input port of corresponding analog channel.
Claims (4)
1. a wireless communication network topology simulator apparatus, is characterized in that: comprise topological generation module (1), signal processing module (2) and multi-channel analog passage (3);
Isolated node parameter, number of network node parameter and network configuration setup parameter that topology generation module (1) arranges according to the user who receives, random generation meets the wireless network topology information that customer parameter is set requirement, and this wireless network topology information is sent to signal processing module (2); After being converted to baseband digital signal, the analog intermediate frequency signal that multi-channel analog passage (3) sends outside each Wireless Telecom Equipment to be measured respectively sends to signal processing module (2); The wireless network topology information that signal processing module (2) sends according to topological generation module (1), baseband digital signal from each analog channel (3) input is carried out to time delay, decline and synthetic processing, and the baseband digital signal of finishing dealing with is sent it back to corresponding analog channel (3); Analog channel (3) is converted to analog intermediate frequency signal by the baseband digital signal receiving and exports in outside Wireless Telecom Equipment to be measured.
2. a kind of wireless communication network topology simulator apparatus according to claim 1, is characterized in that: described analog channel (3) is comprised of digital interface (11), D/A modular converter (12), the first low pass filter (13), the first frequency mixer (14), the first local oscillator (22), the second low pass filter (15), a SMA adapter (16), the 2nd SMA adapter (17), amplifier (18), the second frequency mixer (19), the 3rd low pass filter (20), A/D modular converter (21) and the second local oscillator (23);
Digital interface (11) receives the baseband digital signal after time delay, decline and synthetic processing from signal processing module (2) output, and exports this baseband digital signal to D/A modular converter (12); D/A modular converter (12) is converted to this baseband digital signal to export the first low pass filter (13) to after base-band analog signal and carry out low-pass filtering; The first low pass filter (13) exports the base-band analog signal after low-pass filtering to the first frequency mixer (14), and the first local oscillator (22) is that the first frequency mixer (14) provides local oscillation signal; The first frequency mixer (14) up-converts to the base-band analog signal after low-pass filtering to export the second low pass filter (15) to after analog intermediate frequency signal and carry out low-pass filtering; The second low pass filter (15) exports the analog intermediate frequency signal after low-pass filtering to a SMA adapter (16), by a SMA adapter (16), received analog intermediate frequency signal export Wireless Telecom Equipment to be measured to;
The 2nd SMA adapter (17) accesses the analog intermediate frequency signal of Wireless Telecom Equipment to be measured output, and to the amplifier (18) of exporting and carry out low noise amplification; Amplifier (18) exports the analog intermediate frequency signal after low noise amplification to the second frequency mixer (19); The second local oscillator (23) is that the second frequency mixer (19) provides local oscillation signal, and the second frequency mixer (19) is down-converted to the analog intermediate frequency signal after amplifying base-band analog signal and exports the 3rd low pass filter (20) to and carries out low-pass filtering; The 3rd low pass filter (20) exports the base-band analog signal after low-pass filtering to A/D modular converter (21); A/D modular converter (21) is converted to baseband digital signal base-band analog signal and exports digital interface (11) to; Digital interface (11) sends to the baseband digital signal of receiving in signal processing module (2).
3. a kind of wireless communication network topology simulator apparatus according to claim 1, is characterized in that: described topological generation module (1) is comprised of network topology generation module (24), isolated node determination module (25), network parameter computing module (26), data generation module (27) and serial ports sending module (28);
Described network topology generation module (24) generates a wireless network topology structure at random according to the number of network node parameter of outside input and network configuration setup parameter, and exports isolated node determination module (25) to; Isolated node determination module (25) is according to the isolated node parameter of outside input, wireless network topology structure to network topology generation module (24) input judges, court verdict is returned to network topology generation module (24), and the final wireless network topology structure generating of network topology generation module (24) is sent to network parameter computing module (26); Network parameter computing module (26), according to the wireless network topology structure of input, calculates corresponding wireless network topology parameter and is sent to data generation module (27); Data generation module (27) is organized wireless network topology parameter and encapsulate, and generates control command packet and is sent to serial ports sending module (28); Serial ports sending module (28) by the control command Packet Generation receiving to signal processing module (2).
4. a kind of wireless communication network topology simulator apparatus according to claim 1, is further characterized in that: described signal processing module (2) is comprised of serial data receiving element (29), parameter processing unit (30), link decision unit (31), time delay control unit (32), decline control unit (33) and signal synthesis unit (34);
Described serial data receiving element (29) receives from the wireless network topology information of topological generation module (1) output, and carries out data transaction, exports parameter processing unit (30) to after single bit data being converted to the wireless network topology information of 8bit; Parameter processing unit (30) is converted to link connected state parameter, chain-circuit time delay parameter and link attenuation parameter the wireless network topology information of 8bit, and correspondence exports respectively link decision unit (31), time delay control unit (32) and decline control unit (33) to one by one; Link decision unit (31) receives the multichannel baseband digital signal of multi-channel analog passage (3) input, and according to the link connected state parameter of parameter processing unit (30) input, the connected state of link between multi-channel analog passage (3) is judged, the signal transmission of generation in connected state link, and export the link transmission signal of generation to time delay control unit (32); Time delay control unit (32), according to the chain-circuit time delay parameter of parameter processing unit (30) input, carries out exporting decline control unit (33) to after time delay processing to the link transmission signal of link decision unit (31) input; Decline control unit (33) is according to the link attenuation parameter of parameter processing unit (30) input, and the link transmission signal after time delay processing that time delay control unit (32) is inputted exports signal synthesis unit (34) to after declining and processing; Signal synthesis unit (34), to the link transmission signal after time delay and attenuation processing, carries out signal for each analog channel (3) and synthesizes, and generates multichannel baseband digital signal, and exports corresponding analog channel (3) to.
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| CN102006131B (en) * | 2010-12-02 | 2013-08-07 | 中国电子科技集团公司第五十四研究所 | Environmental simulator device based on cognitive radio |
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