CN205647531U - Radio signal measurement system - Google Patents

Abstract

The utility model relates to a radio signal measurement system, include: be located first enclosure space the wireless equipment of awaiting measuring and radiating antenna group, be located accompanying survey equipment and testing the master controller, be located the signal propagation analogue means between first enclosure space and the second enclosure space of second enclosure space. First enclosure space, second enclosure space all possess free space's condition. Signal propagation analogue means for simulation radio signal propagation model, and carry out behind the channel simulation manipulation conveying to accompanying survey equipment with the data of sending by the wireless equipment of awaiting measuring that wireless receiving was organized to the radiating antenna, or the signal propagation analogue means data that will accompany survey equipment to transmit are carried on behind the channel simulation manipulation through radiating antenna group wireless transmission to the wireless equipment of awaiting measuring. Can the artificial antenna await measuring equipment transmission or received signal's different mode of propagation such as reflection, diffraction, direct projection of this radio signal measurement system have replaced actual test and have verified and can improve signal measurement system testing performance and efficiency of software testing in the place.

Description

Wireless signal measures system

Technical field

This utility model relates to wireless communication technology field, particularly relates to a kind of wireless signal and measures system.

Background technology

Along with the standard of IEEE802.11 series constantly advances, advance and the practicality of its technology are continuously available Perfect, all kinds of radio communication products need to possess good transmitting and receptivity, can ensure communication quality, More excellent voice-and-data business could be provided for users.Study through for many years, about SISO The test of the space radiation performance indications in (single input single output, single-input single-output) system Method and apparatus is the most ripe, especially gsm system.

When nowadays carrying out the 4G such as 3G or even follow-up LTE (Long Term Evolution, Long Term Evolution) In generation, SISO system can not meet the most far away demand.In new high-speed high-quality amount wireless communication system, generally MIMO (Multiple Input Multiple Output, multiple-input and multiple-output) system will be used.But Owing to the test performance of conventional wireless Signal Measurement System is relatively low, the new techniques such as MIMO cannot be supported The side that the performance test of the radio communication product in requirement, especially mimo system is the most perfect Case.

Utility model content

Based on this, it is necessary to for the problem that conventional wireless Signal Measurement System performance is relatively low, it is provided that Yi Zhongwu Line Signal Measurement System.

A kind of wireless signal measures system, including: it is positioned at wireless Devices to test and the radiation in the first closing space Antenna sets, be positioned at the second closing space accompany measurement equipment and test master, be positioned at described first close space And second the signal closed between space propagate analog；Described first closes space, the second closing space It is provided with the condition of free space；Described active antenna group, signal are propagated analog, are accompanied measurement equipment successively Connected by radio-frequency cable；Described measurement equipment is accompanied also to be connected with test master；

Described signal propagates analog, for analog wireless signals propagation model, and by described active antenna The data sent by wireless Devices to test of group wireless receiving are sent to accompany survey to set after carrying out channel simulation process Standby, or described signal propagates after the described data accompanying measurement equipment to transmit carry out channel simulation process by analog It is wirelessly transmitted to wireless Devices to test by active antenna group.

Wherein in an embodiment, described signal is propagated analog and is included that interconnective mode is imitated True device and attenuator；Described mode emulator, when analog radio ripple channel exists barrier Transmission of wireless signals model；Described attenuator, for simulating the signal propagation losses of free space.

Wherein in an embodiment, described mode emulator includes that demultiplexer, the first signal are raw Grow up to be a useful person, secondary signal maker, circuit delay device and signal synthesizer；

Described demultiplexer, for the input signal of described mode emulator is separated into two paths of signals, And be respectively sent in the first signal generator and secondary signal maker；Described first signal generator, Binary signal maker, exports two-way phase place respectively according to respective input signal and signal that amplitude all differs； Described circuit delay device, for carrying out delay process to the signal of described secondary signal maker output；Described Signal synthesizer, for merging into a road by the signal of described first signal generator, the output of circuit delay device Signal, and it is sent to described attenuator.

Wherein in an embodiment, described first signal generator includes the first sample of signal being sequentially connected with Unit, switch and first phase delay cell；One of them input of described first sample of signal unit is The input of described first signal generator, the outfan of described first sample of signal unit is described first letter The outfan of number maker.

Wherein in an embodiment, described secondary signal maker includes the secondary signal sampling being sequentially connected with Unit, attenuation units, second phase delay cell；One of them input of described secondary signal sampling unit End is the input of described secondary signal maker, and the outfan of described secondary signal sampling unit is described the The outfan of binary signal maker.

Wherein in an embodiment, described first closes space is provided by microwave dark room.

Wherein in an embodiment, absorbing material, and described absorbing material bag are set in described microwave dark room Include absorption flat plate, inhale ripple splitter, inhale popin cone in one or more.

Wherein in an embodiment, in described microwave dark room, it is provided with rotation platform, and described rotation platform is used In placing described wireless Devices to test.

Wherein in an embodiment, described second closes space is provided by shielded box, and in described shielded box It is provided with absorption flat plate.

Wherein in an embodiment, described in accompany measurement equipment include radio frequency switch and some be in different operating Reception/the launch terminal of frequency range；Each described reception/launch terminal by described radio frequency switch be switched on or switched off with Described signal propagates the connection of analog.

Above-mentioned wireless signal is measured system and is had the beneficial effect that in this wireless signal measurement system, wireless Devices to test and active antenna group are respectively positioned on the first closing space, accompany measurement equipment and test master to be respectively positioned on Two close space, and the first closing space and second is closed space and is provided with the condition of free space simultaneously, thus For wireless Devices to test and accompany measurement equipment provide a pure electromagnetic environment.

Meanwhile, between wireless Devices to test and the communication link accompanying measurement equipment, there is also signal propagate simulation dress Put, and this signal is propagated analog and is used for analog wireless signals propagation model, and by wireless for active antenna group The data sent by wireless Devices to test received are sent to accompany measurement equipment, or letter after carrying out channel simulation process Number propagation analog the data accompanying measurement equipment to transmit are carried out after channel simulation process by active antenna group without Line sends to wireless Devices to test.

Therefore this wireless signal measure system for wireless Devices to test and accompany measurement equipment provide without external interference with On the basis of transonic test environment, additionally it is possible to simulate wireless Devices to test launch or receive signal reflection, The communication mode that diffraction, direct projection etc. are different, instead of the test checking place of reality such that it is able to improve letter Number measure the test performance of system and testing efficiency.

Accompanying drawing explanation

Fig. 1 measures the composition structural representation of system for the wireless signal that an embodiment provides.

Fig. 2 be embodiment illustrated in fig. 1 wireless signal measurement system in signal propagate analog composition knot Structure schematic diagram.

Fig. 3 be embodiment illustrated in fig. 1 wireless signal measurement system in accompany the composition structural representation of measurement equipment.

Detailed description of the invention

For the ease of understanding this utility model, below with reference to relevant drawings, this utility model is carried out more comprehensively Description.Accompanying drawing gives preferred embodiment of the present utility model.But, this utility model can be to be permitted The most different forms realizes, however it is not limited to embodiment described herein.On the contrary, provide these to implement The purpose of example is to make the understanding to disclosure of the present utility model more thorough comprehensively.

Unless otherwise defined, all of technology used herein and scientific terminology and the skill belonging to utility model The implication that the technical staff in art field is generally understood that is identical.Used in the description in utility model herein Term be intended merely to describe specific embodiment purpose, it is not intended that limit this utility model.Institute herein The term "and/or" used includes the arbitrary and all of combination of one or more relevant Listed Items.

As it is shown in figure 1, in one embodiment, wireless signal is measured system and is built upon IEEE802.11 standard Under the measurement system of a set of analog subscriber real network environment, this system adds signal in test link Propagating analog 3000, the radio propagation channel of emulation reality is to obtain the biography close with actual environment Broadcast model, thus experience closer to actual user network.Next measure specifically introducing this wireless signal System realize principle.

Wireless signal is measured system and is included wireless Devices to test 1000, active antenna group 2000, signal propagating mode Intend device 3000, accompany measurement equipment 4000 and test master 5000.

In this wireless signal measurement system, wireless Devices to test 1000 and active antenna group 2000 can phases Wirelessly transmitting data mutually, and be respectively positioned in the first closing space.Sky is comprised in the most wireless Devices to test 1000 Line, and active antenna group 2000 is positioned at the radiated far field of wireless Devices to test 1000 antenna, and active antenna Group 2000 is then equivalent to accompany the antenna of measurement equipment 4000 one end.

Measurement equipment 4000 and test master 5000 is accompanied to be respectively positioned in the second closing space.First close simultaneously Space, second close space and be provided with the condition of free space, i.e. in the two space Electromgnetically-transparent, Reflection is few, thus for wireless Devices to test 1000 and accompany measurement equipment 4000 to provide a pure electromagnetism ring Border, thus improve testing efficiency.

Additionally, active antenna group 2000, signal are propagated analog 3000, are accompanied measurement equipment 4000 to lead to successively Cross radio-frequency cable to connect.Measurement equipment 4000 is accompanied also to be connected with test master 5000.

Signal propagates analog 3000, for analog wireless signals propagation model, and by active antenna group 2000 The data sent by wireless Devices to test 1000 of wireless receiving are sent to accompany survey to set after carrying out channel simulation process For 4000, or signal is propagated analog 3000 and the data accompanying measurement equipment 4000 to transmit is carried out channel simulation It is wirelessly transmitted to wireless Devices to test 1000 by active antenna group 2000 after process.Above-mentioned channel simulation processes Such as carry out the operation such as propagation path loss, phase delay.

The most in the present embodiment, wireless Devices to test 1000 and accompany the signal between measurement equipment 4000 Transmission path includes two parts altogether: Part I be in the first closing space wireless Devices to test 1000 with accompany survey Space propagation between the antenna (and active antenna group 2000) of equipment 4000 one end；Part II is signal Propagate analog 3000.Wherein, wireless Devices to test 1000 and active antenna group in first closes space 2000 are equivalent to carry out glitch-free transmission of wireless signals, and follow-up signal of being so more convenient for propagates analog 3000 channel simulations carrying out reality.

The most above-mentioned wireless signal measures the operation principle of system: if wireless Devices to test 1000 launches signal, Then by the aerial radiation in wireless Devices to test 1000 to space, (i.e. first closes the sky in space to this signal Between).This signal i.e. can be accompanied the antenna of measurement equipment 4000 one end (i.e. active antenna group 2000) receive and lead to Cross radio-frequency cable be sent to signal propagate analog 3000 process, with analog wireless channel transmit to this The situations such as propagation path loss that signal causes, phase delay.Signal is propagated analog 3000 and will be processed After signal be sent to accompany measurement equipment 4000 by radio-frequency cable, thus establish communication link, complete communication Half period.In like manner, after accompanying measurement equipment 4000 also can launch signal and carry out above-mentioned identical process, Received by wireless Devices to test 1000 eventually, thus complete the another half period of communication.

Therefore, the wireless signal that the present embodiment provides measures system for wireless Devices to test 1000 and accompany survey to set On the basis of standby 4000 provide without external interference and transonic test environment, additionally it is possible to simulate wireless to be measured set Standby 1000 launch or receive the different communication modes such as the reflection of signal, diffraction, direct projection, instead of reality Test checking place such that it is able to improve test performance and the testing efficiency of Signal Measurement System further.

Concrete, in above-mentioned wireless signal measurement system, as in figure 2 it is shown, signal propagates analog 3000 Including interconnective mode emulator 3100 and attenuator 3200.Wherein, mode emulator 3100, the transmission of wireless signals model when analog radio ripple channel exists barrier, thus build nothing The propagation path loss of line signal, phase delay etc..Attenuator 3200, for simulating the signal of free space Propagation loss.

In the present embodiment, attenuator 3200 is programmable attenuator, it is possible to reduce being wirelessly transferred chain according to demand The signal amplitude on road, thus reach to simulate the purpose of the signal propagation losses of free space.Meanwhile, transmission mould Type emulator 3100 and the concrete circuit connecting relation of attenuator 3200 be: mode emulator 3100 Input be signal propagate analog 3000 input, the outfan of mode emulator 3100 with The input of attenuator 3200 connects, and the outfan of attenuator 3200 is signal and propagates analog 3000 Outfan.

So, propagating analog 3000 for above-mentioned signal, after receiving input signal, signal first passes through Mode emulator 3100 carries out associated propagation path loss decline, phase delay etc. and processes, and transmits afterwards Data feeding attenuator 3200 after model emulation device 3100 will process again processes.Therefore, this enforcement Signal in example propagates analog 3000 can be complete by mode emulator 3100 and attenuator 3200 The mode of orientation analog radio ripple channel so that test more accurate.

It is understood that the concrete structure that signal propagates analog 3000 is not limited to above-mentioned a kind of situation, As long as can analog wireless signals propagation model.

Concrete, as in figure 2 it is shown, in above-mentioned signal propagates analog 3000, mode emulator 3100 include demultiplexer the 3110, first signal generator 3120, secondary signal maker 3130, line Road chronotron 3140 and signal synthesizer 3150.

Wherein, the input of demultiplexer 3110 is the input of mode emulator 3100, signal The outfan of separator 3110 respectively with the first signal generator 3120, secondary signal maker 3130 defeated Enter end to connect.The outfan of the first signal generator 3120 is connected with the input of signal synthesizer 3150. The outfan of secondary signal maker 3130 connects the another of signal synthesizer 3150 by circuit delay device 3140 One input.The outfan of signal synthesizer 3150 is the outfan of mode emulator 3100.

Demultiplexer 3110, for by input signal (the i.e. signal propagating mode of mode emulator 3100 Intend the input signal of device 3000) it is separated into two paths of signals, and it is respectively sent to the first signal generator 3120 With in secondary signal maker 3130.Wherein, the input signal of mode emulator 3100 is for accompanying survey to set Standby 4000 signals transmitted or active antenna group 2000 transmit by wireless Devices to test 1000 wireless transmission Signal.Power divider such as selected by demultiplexer 3110.

First signal generator 3120, secondary signal maker 3130, (i.e. believe according to respective input signal The two paths of signals of number separator 3110 output) signal that output two-way phase place and amplitude all differ, i.e. generate The multipath signal that two-way is different.It is to say, the first signal generator 3120, secondary signal maker 3130 Main signal is carried out amplitude and the different processing procedure such as power reduction, Phase delay, thus export two-way The signal that phase place and amplitude all differ.

Above-mentioned first signal generator 3120 specifically include be sequentially connected with the first sample of signal unit 3121, open Pass 3122 and first phase delay cell 3123.Wherein, one of them of the first sample of signal unit 3121 Input is the input of the first signal generator 3120, and the outfan of the first sample of signal unit 3121 is The outfan of the first signal generator 3120.

Specifically, the first sample of signal unit 3121 such as selects directional coupler.Switch 3122 and the One phase delay cell 3123 is controlled by test master 5000.Switch 3122 is speed-sensitive switch, Its speed carrying out open and close switching should meet the transmission requirement of analog radio ripple channel.

So in above-mentioned first signal generator 3120, when receiving the one of demultiplexer 3110 transmission After the input signal of road, this input signal is under the switching control of switch 3122 and through first phase delay cell After 3123 carry out Phase delay process, export to signal synthesizer eventually through the first sample of signal unit 3121 3150。

Above-mentioned secondary signal maker 3130 specifically include be sequentially connected with secondary signal sampling unit 3131, decline Subtract unit 3132, second phase delay cell 3133.Wherein, secondary signal sampling unit 3131 is wherein One input is the input of secondary signal maker 3130, the output of secondary signal sampling unit 3131 End is the outfan of secondary signal maker 3130.

Specifically, secondary signal sampling unit 3131 such as selects directional coupler.Attenuation units 3132 Such as select programmable attenuator.Attenuation units 3132 and second phase delay cell 3133 are by test master control Device 5000 is controlled.

So in above-mentioned secondary signal maker 3130, when receiving the another of demultiplexer 3110 transmission After one tunnel input signal, this input signal carries out the processing procedure different from the first signal generator 3120, tool Body is that this input signal both carried out power and amplitude fading by attenuation units 3132, prolongs through second phase again Unit 3133 carries out Phase delay late, exports to circuit delay eventually through secondary signal sampling unit 3131 Device 3140.

Circuit delay device 3140, for carrying out delay process to the signal of secondary signal maker 3130 output.

Signal synthesizer 3150, for exporting the first signal generator 3120, circuit delay device 3140 Signal merges into a road signal, and is sent to attenuator 3200.Signal synthesizer 3150 such as selects power to divide Orchestration.

So, for above-mentioned mode emulator 3100, its concrete operation principle is: signal divides From device 3110, input signal being separated into two paths of signals, this two paths of signals is respectively by the first signal generator 3120, after secondary signal maker 3130 processes, two-way phase place and the most different signal of amplitude are formed.With Time, signal circuit delay the to be passed through device 3140 that secondary signal maker 3130 is formed after processing prolongs Time process.The signal that finally, signal synthesizer 3,150 first signal generator 3120 finally drawn, The signal that circuit delay device 3140 is formed after processing is overlapped, thus completes radio wave channel and there is obstacle Transmission of wireless signals modeling process during thing.

It is understood that the concrete structure of mode emulator 3100 is not limited to above-mentioned a kind of situation, only Can analog radio ripple channel transmission of wireless signals model when there is barrier.

Concrete, as it is shown in figure 1, above-mentioned first closing space is provided by microwave dark room 6000.Microwave dark room 6000 is a standard-sized rectangle microwave darkroom.

Meanwhile, in order to meet the propagation demand of the advanced technologies such as MIMO signal, microwave dark room 6000 is provided with There is the absorbing material of different absorbability.In the present embodiment, absorbing material include absorption flat plate 6100, Suction ripple splitter 6200, suction popin bore one or more in 6300.It addition, above-mentioned different types of suction Wave material is according to the difference of suction intensity of wave, in six planes being distributed in microwave dark room 6000 of rule, thus The reflection and the absorption that make electromagnetic wave are in poised state, and not only met MIMO signal has effect spread but also full This wireless signal of foot measures the reliability of system and test data are repeatable.

Concrete, it is additionally provided with rotation platform 7000 in above-mentioned microwave dark room 6000, and rotation platform 7000 is used In placing wireless Devices to test 1000.Rotation platform 7000 is made up of the dielectric material of low dielectric simultaneously, to keep away Exempt from wireless Devices to test 1000 is interfered.Certainly, wireless Devices to test 1000 is not limited to be positioned over rotation Turn this kind of form of platform 7000, it is also possible to other modes are positioned in microwave dark room 6000, as long as can With active antenna group 2000 proper communication.

Concrete, as it is shown in figure 1, the second closing space is provided by shielded box 8000, and shielded box 8000 Inside it is provided with absorption flat plate 6100.This shielded box 8000 has identical function with microwave dark room 6000.

It is understood that first close space, second close space and be not limited to above-mentioned a kind of set-up mode, As long as the condition of free space can be possessed, such as first closes space, the second closing space the most instead Cross cause shielded box 8000, microwave dark room 6000 provides.

Concrete, as it is shown on figure 3, accompany measurement equipment 4000 include radio frequency switch 4200 and some be in not Reception/launch terminal 4100 with working frequency range.Each reception/launch terminal 4100 is by radio frequency switch 4200 It is switched on or switched off and the connection of signal propagation analog 3000.Therefore, each reception/launch terminal 4100 energy Enough carry out free switching as desired by radio frequency switch 4200, thus meet different testing requirements.

Wherein, reception/launch terminal 4100 not only can launch signal but also can receive signal, and receive/launch The quantity of terminal 4100 should be identical with the quantity of antenna in active antenna group 2000.Reception/launch terminal simultaneously 4100 are installed on test master 5000.Radio frequency switch 4200 is controlled by test master 5000.

It addition, in the present embodiment, it is additionally provided with subtest controller in the first closing space, is used for providing The operation of test program, test content and test data operation etc..Certainly, in other embodiments, auxiliary The function that test controller realizes also can directly be realized by test master 5000.

In sum, in the wireless signal measurement system that this enforcement provides, wireless Devices to test 1000 is (such as Wireless aps) and accompany measurement equipment 4000 (the most wireless STA) to lay respectively at by microwave dark room 6000 and shielding In first closing space of case 8000 offer, the second closing space, and carry out by the way of antenna couples Communication.Wherein, microwave dark room 6000 and shielded box 8000 provide without external interference and transonic test Environment.On this basis, it is provided with signal between microwave dark room 6000 and shielded box 8000 and propagates simulation dress Putting 3000, input corresponding mould shape parameter by software, calculating simulation obtains the propagation road of spacing wireless signal Footpath and mode, thus reach consistent with actual checkout area and test effect.Therefore, this wireless signal measures system Not only facilitate properties of product detection, also improve testing efficiency.

Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the most right The all possible combination of each technical characteristic in above-described embodiment is all described, but, if these skills There is not contradiction in the combination of art feature, is all considered to be the scope that this specification is recorded.

Embodiment described above only have expressed several embodiments of the present utility model, its describe more concrete and In detail, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that, it is right For those of ordinary skill in the art, without departing from the concept of the premise utility, it is also possible to do Going out some deformation and improvement, these broadly fall into protection domain of the present utility model.Therefore, this utility model is special The protection domain of profit should be as the criterion with claims.

Claims (10)

1. a wireless signal measures system, it is characterized in that, including: first close the wireless Devices to test in space and active antenna group, close accompanying measurement equipment and test master, closing, described first, the signal closing between space in space and second and propagate analog of space second；Described first closing space, the second closing space are provided with the condition of free space；Described active antenna group, signal are propagated analog, are accompanied measurement equipment to pass sequentially through radio-frequency cable connection；Described measurement equipment is accompanied also to be connected with test master；

Described signal propagates analog, for analog wireless signals propagation model, and be sent to accompany measurement equipment after the data sent by wireless Devices to test of described active antenna group wireless receiving are carried out channel simulation process, or described signal is propagated after the described data accompanying measurement equipment to transmit are carried out channel simulation process by analog and is wirelessly transmitted to wireless Devices to test by active antenna group.

Wireless signal the most according to claim 1 measures system, it is characterised in that described signal is propagated analog and included interconnective mode emulator and attenuator；Described mode emulator, the transmission of wireless signals model when analog radio ripple channel exists barrier；Described attenuator, for simulating the signal propagation losses of free space.

Wireless signal the most according to claim 2 measures system, it is characterised in that described mode emulator includes demultiplexer, the first signal generator, secondary signal maker, circuit delay device and signal synthesizer；

Described demultiplexer, for the input signal of described mode emulator is separated into two paths of signals, and is respectively sent in the first signal generator and secondary signal maker；Described first signal generator, secondary signal maker, export two-way phase place respectively according to respective input signal and signal that amplitude all differs；Described circuit delay device, for carrying out delay process to the signal of described secondary signal maker output；Described signal synthesizer, for the signal of described first signal generator, the output of circuit delay device is merged into a road signal, and is sent to described attenuator.

Wireless signal the most according to claim 3 measures system, it is characterised in that described first signal generator includes the first sample of signal unit, switch and the first phase delay cell being sequentially connected with；The input that one of them input is described first signal generator of described first sample of signal unit, the outfan that outfan is described first signal generator of described first sample of signal unit.

Wireless signal the most according to claim 3 measures system, it is characterised in that secondary signal sampling unit that described secondary signal maker includes being sequentially connected with, attenuation units, second phase delay cell；One of them input of described secondary signal sampling unit is the input of described secondary signal maker, and the outfan of described secondary signal sampling unit is the outfan of described secondary signal maker.

Wireless signal the most according to claim 1 measures system, it is characterised in that described first closes space is provided by microwave dark room.

Wireless signal the most according to claim 6 measures system, it is characterised in that arrange absorbing material in described microwave dark room, and described absorbing material includes one or more in absorption flat plate, suction ripple splitter, suction popin cone.

Wireless signal the most according to claim 6 measures system, it is characterised in that be provided with rotation platform in described microwave dark room, and described rotation platform is used for placing described wireless Devices to test.

9. measure system according to the wireless signal described in any claim in claim 1 to 8, it is characterised in that described second closes space is provided by shielded box, and is provided with absorption flat plate in described shielded box.

10. according to described in any claim in claim 1 to 8 wireless signal measure system, it is characterised in that described in accompany measurement equipment to include radio frequency switch and some reception/launch terminals being in different operating frequency range；Each described reception/launch terminal is switched on or switched off and the connection of described signal propagation analog by described radio frequency switch.