CN103441785B - System and method for multi-antenna channel environment simulation based on full-silencing dark room - Google Patents
System and method for multi-antenna channel environment simulation based on full-silencing dark room Download PDFInfo
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- CN103441785B CN103441785B CN201310317370.3A CN201310317370A CN103441785B CN 103441785 B CN103441785 B CN 103441785B CN 201310317370 A CN201310317370 A CN 201310317370A CN 103441785 B CN103441785 B CN 103441785B
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Abstract
The invention provides a system for multi-antenna channel environment simulation based on a full-silencing dark room. The system comprises a base station simulator, a channel simulation grouping unit, a probe antenna distribution unit and a testing unit. The base station simulator is used for sending generated N routes of signals to the channel simulation grouping unit. The channel simulation grouping unit is used for processing the N routes of signals, dividing the formed K multi-path signals into L groups and transmitting the multi-path signals to the probe antenna distribution unit through an output port of the channel simulation grouping unit. The probe antenna distribution unit is used for enabling the inputted L groups of multi-path signals to be connected with probe antennas. The testing unit is used for sending the L groups of multi-path signals to a device to be tested through the probe antennas, and measuring the signals processed by the device to be tested to obtain the radio-frequency performance of the device to be tested. The system can be used for carrying out testing on the radio-frequency performance of the multi-antenna device under a real environment. The invention further provides a method for the multi-antenna channel environment simulation based on the full-silencing dark room.
Description
Technical field
It is more particularly to a kind of based on the multi-antenna channel environmental simulation system that totally disappeared sound darkroom the present invention relates to the communications field
And method.
Background technology
Single antenna OTA is tested as a kind of active test, mainly tests free space and people's head mould in microwave dark room
The total radiant power TRP of the whole machine of terminal and total omnidirectional sensitivity TIS two indices, directly reflect in the case of three kinds of type or so ear
Radiance performance of the whole machine of terminal in three dimensions all directions, is that quantitative analysis and optimization human body are penetrated to the whole machine of terminal
Influence of frequency performance etc. provides foundation, by the attention and accreditation of terminal manufacturer.
With the arrival in 4G epoch, multi-antenna technology is widely applied in all kinds of wireless communications products, due to multiple antennas
Technology is largely dependent upon the multipath channel of complexity, and past single antenna OTA method of testings can not meet many days
The demand of line radio frequency testing, and for MIMO OTA tests, a unified standard is not yet reached in the world.
Based on this, the present invention provides a kind of based on the multi-antenna channel environmental simulation system and method that totally disappeared sound darkroom.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of based on the multi-antenna channel environmental simulation system that totally disappeared sound darkroom
System and method so that the test of the multi-antenna radio-frequency performance under true environment can be carried out.
To realize object above, the present invention is achieved by the following technical programs：
The present invention provides a kind of based on the multi-antenna channel environmental simulation system that totally disappeared sound darkroom, includes：
Base station simulator：For producing N roads signal, and N roads signal is sent to channel simulator grouped element；
The channel simulator grouped element：For processing N roads signal, K bar multipath signals are formed, and by institute
State K bar multipath signals and be divided into after L groups being exported by its output port and give probe antenna allocation unit；
The probe antenna allocation unit：For according to totally disappeared actually used probe antenna configuration information in sound darkroom,
The L groups multipath signal being input into is attached with probe antenna；
Test cell, for the L groups multipath signal to be sent into Devices to test by the probe antenna, and utilizes institute
State base station simulator to measure the signal after Devices to test treatment, obtain the radio-frequency performance of the Devices to test.
Wherein, the channel simulator grouped element is further included：
Channel multi-path emulates subelement：For by N roads signal after multipath channel is processed as K bar multipath signals,
Send it to multipath signal packet subelement；
Passage Configuration Control Unit：Configuration information for totally disappeared sound darkroom according to, determines multipath signal rule of classification；
The multipath signal is grouped subelement：For according to the multipath signal rule of classification, the K bars that will be received to be more
After footpath signal is divided into L groups, exported to the probe antenna allocation unit through output port.
Wherein, the probe antenna allocation unit is further included：
Darkroom Configuration Control Unit：For store it is described totally disappeared the actually used probe antenna configuration information in sound darkroom, and instead
Feed the passage Configuration Control Unit；
Multipath distribution control subelement：Allocation rule for determining probe antenna；
Probe antenna connects subelement：According to the allocation rule of the probe antenna, for the L groups multipath that will be input into
Signal is attached with probe antenna.
Preferably, the multipath signal rule of classification is：
The AOA values of every multipath signal are defined as：Closest to the angle simulation of the AOA actual values of the multipath signal
The integral multiple of step-length；Multipath signal with identical AOA values is divided into one group；
Wherein, the angle simulation step-length and the product of the probe antenna number of configuration are 360 °.
Preferably, the allocation rule of the probe antenna is：
The angle information of each the output port multipath packet according to the channel simulator grouped element, every group of multipath is believed
The probe antenna of number corresponding analog angle is attached；
Wherein, the angle of probe antenna simulation is the probe antenna with the line of the Devices to test in probe antenna
Relative to the angle of reference line in the plane of composition, the reference line is one in the circumference that the probe antenna is constituted straight
Footpath.
The present invention also provides a kind of based on the multi-antenna channel environmental simulation method that totally disappeared sound darkroom, comprises the following steps：
S1, according to channel model, N roads signal is processed, form K bar multipath signals, and by the K bars multipath signal
Exported after being divided into L groups；
S2, according to totally disappeared actually used probe antenna configuration information in sound darkroom, the L groups multipath signal that will be input into
It is attached with probe antenna；
S3, the L groups multipath signal is sent to Devices to test by the probe antenna, and to the Devices to test at
Signal after reason is measured, and obtains the radio-frequency performance of the Devices to test.
Wherein, the step S1 is further included：
S11, according to channel model, N roads signal is processed by multipath channel, form K bar multipath signals；
The configuration information in sound darkroom is totally disappeared described in S12, basis, multipath signal rule of classification is determined；
S13, according to the multipath signal rule of classification, exported after the K bars multipath signal for receiving is divided into L groups.
Wherein, the step S2 is further included：
S21, the actually used probe antenna configuration information in sound darkroom that totally disappeared is stored；
S22, the allocation rule for determining probe antenna；
S23, the allocation rule according to the probe antenna, the L groups multipath signal for exporting is carried out with probe antenna
Connection.
Preferably, the multipath signal rule of classification is：
The AOA values of every multipath signal are defined as：Closest to the angle simulation of the AOA actual values of the multipath signal
The integral multiple of step-length；Multipath signal with identical AOA values is divided into one group；
Wherein, the angle simulation step-length and the product of the probe antenna number of configuration are 360 °.
Preferably, the allocation rule of the probe antenna is：
The angle information of each the output port multipath packet according to the channel simulator grouped element, every group of multipath is believed
The probe antenna of number corresponding analog angle is attached；
Wherein, the angle of probe antenna simulation is the probe antenna with the line of the Devices to test in probe antenna
Relative to the angle of reference line in the plane of composition, the reference line is one in the circumference that the probe antenna is constituted straight
Footpath.
The present invention is a kind of based on the multi-antenna channel environmental simulation system and method that totally disappeared sound darkroom by providing, and is being based on
Totally disappeared on the basis of sound darkroom, packet transaction is carried out by multipath signal, such that it is able to multipling channel emulation grouped element
Output port, reduces because device port number not enough adds the cost of number of devices；Multipath signal after to packet enters
The probe antenna resource allocation of Mobile state, has reappeared real wireless multi-path communication environments, exists such that it is able to obtain Devices to test
Radio-frequency performance under multiple antennas scene.
Brief description of the drawings
Fig. 1 is the system structure diagram of one embodiment of the invention；
Fig. 2 is the flow chart of one embodiment of the invention；
Fig. 3 is another flow chart of one embodiment of the invention；
Fig. 4 is one embodiment of the invention middle probe aerial position and numbering schematic diagram.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the invention is described in further detail.Hereinafter implement
Example is not limited to the scope of the present invention for illustrating the present invention.
Such as Fig. 1 so, the present invention provides a kind of based on the multi-antenna channel environmental simulation system that totally disappeared sound darkroom, works as channel
When the output port number of emulator is mismatched with the antenna number that totally disappeared sound darkroom, include：
Base station simulator 1：For producing N roads signal, and N roads signal is sent to channel simulator grouped element 2；
The channel simulator grouped element 2：For processing N roads signal, K bar multipath signals are formed, and will
The K bars multipath signal is exported to probe antenna allocation unit 3 after being divided into L groups by output port；The channel simulator packet
Unit 2 is further included：
Channel multi-path emulates subelement 21：For N roads signal to be processed as into K bar multipath signals by multipath channel
Afterwards, multipath signal packet subelement 23 is sent it to；
Passage Configuration Control Unit 22：Configuration information for totally disappeared sound darkroom according to, determines multipath signal packet rule
Then, and further control multipath signal is grouped subelement 23；
The multipath signal is grouped subelement 23：For according to the multipath signal rule of classification, the K bars that will be received
After multipath signal is divided into L groups, exported to the probe antenna allocation unit 3 through output port.
Preferably, the multipath signal rule of classification is：
The AOA values of every multipath signal are defined as：Closest to the angle simulation of the AOA actual values of the multipath signal
The integral multiple of step-length；Multipath signal with identical AOA values is divided into one group；
Wherein, the angle simulation step-length and the product of the probe antenna number of configuration are 360 °.
The probe antenna allocation unit 3：For according to totally disappeared actually used probe antenna configuration information in sound darkroom,
The L groups multipath signal being input into is attached with probe antenna；The probe antenna allocation unit 3 is further included：
Darkroom Configuration Control Unit 31：For store it is described totally disappeared the actually used probe antenna configuration information in sound darkroom, and
Feed back to the passage Configuration Control Unit 22；
Multipath distribution control subelement 32：Allocation rule for determining probe antenna；
Probe antenna connects subelement 33：According to the allocation rule of the probe antenna, the L groups for that will be input into are more
Footpath signal is attached by its AOA value with probe antenna, completes the L groups multipath signal dividing to respective angles probe antenna
Match somebody with somebody.
Preferably, the allocation rule of the probe antenna is：
The angle information of each the output port multipath packet according to the channel simulator grouped element, every group of multipath is believed
The probe antenna of number corresponding analog angle is attached；
Wherein, the angle of probe antenna simulation is the probe antenna with the line of the Devices to test in probe antenna
Relative to the angle of reference line in the plane of composition, the reference line is one in the circumference that the probe antenna is constituted straight
Footpath.
Test cell 4, for the L groups multipath signal to be sent into Devices to test by the probe antenna, and utilizes
Signal after the Devices to test treatment of the base station simulator 1 pair is measured, and obtains the radio-frequency performance of the Devices to test.
As shown in Fig. 2 the present invention also provides a kind of based on the multi-antenna channel environmental simulation method that totally disappeared sound darkroom, including
Following steps：
S1, according to channel model, N roads signal is processed, form K bar multipath signals, and by the K bars multipath signal
Exported after being divided into L groups；The step S1 is further included：
S11, according to channel model, N roads signal is processed by multipath channel, form K bar multipath signals；
The configuration information in sound darkroom is totally disappeared described in S12, basis, multipath signal rule of classification is determined；
S13, according to the multipath signal rule of classification, exported after the K bars multipath signal for receiving is divided into L groups.Its
In, the multipath signal rule of classification is：
The AOA values of every multipath signal are defined as：Closest to the angle simulation of the AOA actual values of the multipath signal
The integral multiple of step-length；Multipath signal with identical AOA values is divided into one group；
Wherein, the angle simulation step-length and the product of the probe antenna number of configuration are 360 °；Even described probe antenna
When number is 24, then its corresponding described angle simulation step-length is 15 °.
S2, according to totally disappeared actually used probe antenna configuration information in sound darkroom, the L groups multipath signal that will be input into
It is attached with probe antenna；The step S2 is further included：
S21, the actually used probe antenna configuration information in sound darkroom that totally disappeared is stored；
S22, the allocation rule for determining probe antenna；
S23, the allocation rule according to the probe antenna, the L groups multipath signal that will be exported is by its AOA value and spy
Pin antenna is attached, and completes the L groups multipath signal to the distribution of respective angles probe antenna；Wherein, the probe antenna
Allocation rule be：
The angle information of each the output port multipath packet according to the channel simulator grouped element, every group of multipath is believed
The probe antenna of number corresponding analog angle is attached；
Wherein, the angle of probe antenna simulation is the probe antenna with the line of the Devices to test in probe antenna
Relative to the angle of reference line in the plane of composition, the reference line is one in the circumference that the probe antenna is constituted straight
Footpath.
S3, the L groups multipath signal is sent to Devices to test by the probe antenna, and to the Devices to test at
Signal after reason is measured, and obtains the radio-frequency performance of the Devices to test.
With reference to Fig. 3, the method flow to the present embodiment is further elaborated：
Step 101：According to channel model, N roads signal is processed by multipath channel, form K bar multipath signals；
Wherein, every multipath signal is synthesized by 20 preferred sub- footpath signals and obtained, with this analog signal from antenna for base station
Hold the space-multipath fading profiles before Devices to test antenna.
Step 102：According to the configuration information that totally disappeared sound darkroom, multipath signal rule of classification is determined；
The general configuration that totally disappeared sound darkroom is as follows：Multiprobe number of antennas is generally 24,32,64, and level is equal
Even to be distributed in around Devices to test, probe antenna number is represented and totally disappeared the sound darkroom angle simulation precision to be reached.Pass through
The multipaths such as the signal of different capacity, time delay, angle of arrival, PAS in simulating multi-path environment are sent in different time, locus
Information.
The AOA values of every multipath signal are defined as：Closest to the angle simulation of the AOA actual values of the multipath signal
The integral multiple of step-length；Multipath signal with identical AOA values is divided into one group；
Wherein, the angle simulation step-length and the product of the probe antenna number of configuration are 360 °.
By taking 24 probe antenna configurations as an example：Angle simulation step-length S=（360°/24）=15 °, angle simulation precision A=
（360°/24）/2=7.5°；Step-length S is simulated according to angle and determines that group technology is：The AOA values of every multipath signal are defined as
Closest to every 15 ° of multipath signal AOA actual values of integral multiple（0 °, ± 15 °, ± 30 ° ... ... ± 180 °）, then will tool
The multipath signal for having identical AOA values is classified as one group, and the AOA of all multipath signals is 15 ° of integral multiple in every group；In addition, root
According to the line of probe antenna and the Devices to test in the plane that probe antenna is constituted relative to the angle of reference line（AOA values）
To every antenna number pn, n ∈ [- 11 ,+12], reference line is taken as the line of p0 and p12, sees Fig. 4.
Step 103：According to the multipath signal rule of classification, the K bars multipath signal for receiving is divided into L groups, and will
The L groups multipath signal is exported through the output port of the channel simulator grouped element, multipath on described each output port of record
The AOA values of signal；
By SCM, ITU-R M.2135, WINNER II definition channel model as a example by, wherein the number comprising main footpath is general
It is 10-20, and the output port number of channel simulator grouped element is generally less than 10, so needing multipath signal with certain rule
Then it is grouped, the output port of grouped element is emulated such that it is able to multipling channel, it is ensured that channel simulator packet is single not increasing
On the premise of first number, multi-path information can be delivered on probe antenna；
Wherein, the L is equal to the channel simulator grouped element output port number for actually enabling；By the K bars multipath
Signal is grouped, and solves multipath number and the unmatched problem of channel simulator grouped element output port number, has both remained many
The angle information of footpath signal, solves the problems, such as that the channel simulator grouped element output port number is limited again.
Step 104：The actually used probe antenna configuration information in sound darkroom that totally disappeared is stored；
Step 105：Determine the allocation rule of probe antenna；The allocation rule of the probe antenna is：
The angle information of each the output port multipath packet according to the channel simulator grouped element, every group of multipath is believed
The probe antenna of number corresponding analog angle is attached；
Wherein, the angle of probe antenna simulation is the probe antenna with the line of the Devices to test in probe antenna
Relative to the angle of reference line in the plane of composition, the reference line is one in the circumference that the probe antenna is constituted straight
Footpath.
Step 106：According to the allocation rule of the probe antenna, the L groups multipath signal that will be exported is according to its AOA value
It is attached with probe antenna；Complete the L groups multipath signal to the distribution of respective angles probe antenna；
Step 107：The L groups multipath signal is sent to Devices to test by the probe antenna, and to described to be measured
Signal after equipment treatment is measured, and obtains the radio-frequency performance of the Devices to test.
The present invention it is a kind of based on the multi-antenna channel environmental simulation system and method that totally disappeared sound darkroom by providing, exist with
Lower beneficial effect：
1）On the basis of based on totally disappeared sound darkroom, packet transaction is carried out by multipath signal, such that it is able to be multiplexed letter
Road emulates the output port of grouped element, and the channel simulator packet is solved while the angle information for remaining multipath signal
The limited problem of unit output port number, reduces because device port number not enough adds the cost of number of devices；
2）Multipath signal after to packet carries out dynamic probe antenna resource allocation, has reappeared real unlimited many
Footpath communication environments, such that it is able to obtain radio-frequency performance of the Devices to test under multiple antennas scene.
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, about the common of technical field
Technical staff, without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore all
Equivalent technical scheme falls within scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (4)
1. it is a kind of based on the multi-antenna channel environmental simulation system that totally disappeared sound darkroom, it is characterised in that to include：
Base station simulator：For producing N roads signal, and N roads signal is sent to channel simulator grouped element；
The channel simulator grouped element：For processing N roads signal, K bar multipath signals are formed, and by the K
Bar multipath signal is divided into after L groups being exported by its output port gives probe antenna allocation unit；
The probe antenna allocation unit：For according to totally disappeared actually used probe antenna configuration information in sound darkroom, will be defeated
The L groups multipath signal for entering is attached with probe antenna；
Test cell, for the L groups multipath signal to be sent into Devices to test by the probe antenna, and utilizes the base
Simulator of standing is measured to the signal after Devices to test treatment, obtains the radio-frequency performance of the Devices to test；
The channel simulator grouped element is further included：
Channel multi-path emulates subelement：For by N roads signal after multipath channel is processed as K bar multipath signals, by it
Send to multipath signal and be grouped subelement；
Passage Configuration Control Unit：Configuration information for totally disappeared sound darkroom according to, determines multipath signal rule of classification；
The multipath signal is grouped subelement：For according to the multipath signal rule of classification, the K bars multipath letter that will be received
After number being divided into L groups, exported to the probe antenna allocation unit through output port；
Wherein, the probe antenna allocation unit is further included：
Darkroom Configuration Control Unit：For store it is described totally disappeared the actually used probe antenna configuration information in sound darkroom, and feed back to
The passage Configuration Control Unit；
Multipath distribution control subelement：Allocation rule for determining probe antenna；
Probe antenna connects subelement：According to the allocation rule of the probe antenna, for the L groups multipath signal that will be input into
It is attached with probe antenna；
Wherein, the multipath signal rule of classification is：
The AOA values of every multipath signal are defined as：Angle closest to the AOA actual values of the multipath signal simulates the whole of step-length
Several times；Multipath signal with identical AOA values is divided into one group；
Wherein, the angle simulation step-length and the product of the probe antenna number of configuration are 360 °.
2. the system as claimed in claim 1, it is characterised in that the allocation rule of the probe antenna is：
According to the channel simulator grouped element each output port multipath packet angle information, by every group of multipath signal with
The probe antenna of its correspondence analog angle is attached；
Wherein, the angle of the probe antenna simulation is that the probe antenna is constituted with the line of the Devices to test in probe antenna
Plane in relative to reference line angle, the reference line is a diameter in the circumference that the probe antenna is constituted.
3. it is a kind of based on the multi-antenna channel environmental simulation method that totally disappeared sound darkroom, it is characterised in that to comprise the following steps：
S1, according to channel model, N roads signal is processed, form K bar multipath signals, and the K bars multipath signal is divided into
Exported after L groups；
S2, according to totally disappeared actually used probe antenna configuration information in sound darkroom, the L groups multipath signal that will be input into and spy
Pin antenna is attached；
S3, the L groups multipath signal is sent to Devices to test by the probe antenna, and to Devices to test treatment after
Signal measure, obtain the radio-frequency performance of the Devices to test；
The step S1 is further included：
S11, according to channel model, N roads signal is processed by multipath channel, form K bar multipath signals；
The configuration information in sound darkroom is totally disappeared described in S12, basis, multipath signal rule of classification is determined；
S13, according to the multipath signal rule of classification, exported after the K bars multipath signal for receiving is divided into L groups；
Wherein, the step S2 is further included：
S21, the actually used probe antenna configuration information in sound darkroom that totally disappeared is stored；
S22, the allocation rule for determining probe antenna；
S23, the allocation rule according to the probe antenna, the L groups multipath signal for exporting is attached with probe antenna；
Wherein, the multipath signal rule of classification is：
The AOA values of every multipath signal are defined as：Angle closest to the AOA actual values of the multipath signal simulates the whole of step-length
Several times；Multipath signal with identical AOA values is divided into one group；
Wherein, the angle simulation step-length and the product of the probe antenna number of configuration are 360 °.
4. method as claimed in claim 3, it is characterised in that the allocation rule of the probe antenna is：
According to the channel simulator grouped element each output port multipath packet angle information, by every group of multipath signal with
The probe antenna of its correspondence analog angle is attached；
Wherein, the angle of the probe antenna simulation is that the probe antenna is constituted with the line of the Devices to test in probe antenna
Plane in relative to reference line angle, the reference line is a diameter in the circumference that the probe antenna is constituted.
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| CN104168072B (en) * | 2014-08-01 | 2017-06-30 | 广州三星通信技术研究有限公司 | Signal supervisory instrument, detection mobile terminal receive the method and system of emitting performance |
| CN104902504B (en) * | 2015-06-08 | 2018-12-18 | 北京邮电大学 | A kind of test macro and test method of the handling capacity of multiple antennas mobile terminal |
| CN104917577B (en) * | 2015-06-11 | 2018-01-16 | 陈奕铭 | The darkroom Multi probe test system of MIMO wireless terminal performances |
| CN105743553A (en) * | 2016-01-26 | 2016-07-06 | 北京邮电大学 | Uplink performance test system and method for multi-antenna mobile terminal |
| CN106209284B (en) * | 2016-07-07 | 2018-10-16 | 北京邮电大学 | A kind of creation method and device of MIMO OTA channels |
| CN106230531B (en) * | 2016-07-25 | 2018-10-16 | 北京邮电大学 | A kind of MIMO OTA channel modeling methods and device |
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| CN100338968C (en) * | 2004-06-17 | 2007-09-19 | 中兴通讯股份有限公司 | Quick dynamic channel distribution method for time-division CDMA communication system |
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| CN101667873A (en) * | 2008-09-03 | 2010-03-10 | 中兴通讯股份有限公司 | Method and system for testing radio-frequency performance of receiver in multi-antenna channel environment |
| CN102130725A (en) * | 2010-01-20 | 2011-07-20 | 中兴通讯股份有限公司 | Test method and system for over-the-air (OTA) performance of multi-aerial system |
| CN102148648A (en) * | 2010-02-05 | 2011-08-10 | 中兴通讯股份有限公司 | Space radio-frequency performance test method and system in multi-antenna system |
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