CN101106432A - A testing method and system for receiving sensitivity parameter of mobile terminal - Google Patents
A testing method and system for receiving sensitivity parameter of mobile terminal Download PDFInfo
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- CN101106432A CN101106432A CNA200710138751XA CN200710138751A CN101106432A CN 101106432 A CN101106432 A CN 101106432A CN A200710138751X A CNA200710138751X A CN A200710138751XA CN 200710138751 A CN200710138751 A CN 200710138751A CN 101106432 A CN101106432 A CN 101106432A
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Abstract
The invention discloses a method and a system for testing the receiving sensitivity of mobile terminals. The method includes the steps that a geometric testing model of the component to be tested which is composed of the mobile terminal and the human head electromagnetic model is constructed, and the component to be tested is put on the three-dimensional test rotating table; the component to be tested and the simulator are put into the testing environment screened from external wireless; the mobile terminal and the simulator are kept in a normal working state to wirelessly transmit and receive; the parameter of receiving sensitivity are tested and processed to obtained. The method and the system for testing the receiving sensitivity of mobile terminals in the invention has the advantages of low environmental requirement, easy testing, and easy operation and so on.
Description
Technical Field
The invention relates to the field of communication, in particular to a method and a system for testing the receiving sensitivity of a mobile terminal.
Background
The OTA (Over The Air) characteristic of The mobile terminal can objectively reflect The radio link performance of The terminal. At present, an OTA parameter test model of a mobile terminal reflects parameter characteristics based on an APS (Audio Physical scene), that is, characteristics of the terminal attached to a human head for voice communication in such a scene. With the rapid development of cellular mobile network, wireless local area network and broadcast network communication technologies, mobile terminals need to provide wireless video services. For the OTA technology, the service is performed in a Video Physical Scene (VPS), and when a user views the Video service, the mobile terminal needs to be located right in front of the line of sight of the user and keep a proper distance from the head of the user. The video Service includes, but is not limited to, multimedia Broadcast Multicast Service MBMS (Multimedia Broadcast Multicast Service), mobile television Service, and the like.
Under two scenes of VPS and APS, the electromagnetic effect of a human body on the mobile terminal is different, so that the OTA TRS (Total Received Sensitivity) test model and the test limit value are different. At present, researches on OTA characteristic test methods of mobile terminals under APS are basically mature, but the researches under VPS are blank at home and abroad at present.
Based on the above background, the present invention provides a method and a system for testing OTA TRS parameters of a mobile video terminal in a VPS.
Disclosure of Invention
The invention aims to provide a method and a system for testing receiving sensitivity parameters of a mobile terminal.
In order to solve the above problems, the present invention provides a method for testing the receiving sensitivity of a mobile terminal, comprising the following steps:
(1) Establishing a geometric test model of the component to be tested, which is formed by a mobile terminal and a human head electromagnetic model, and placing the component to be tested on a three-dimensional test turntable;
(2) Placing the component to be tested and the simulator in a test environment shielded from outside radio;
(3) Keeping the mobile terminal and the simulator in normal wireless transmitting and receiving working states;
(4) And testing and processing to obtain the receiving sensitivity parameters.
Further, the test method can also have the following characteristics: the establishment of the geometric test model in the step (1) can be further divided into the following steps:
(1.1) placing a bottom plane geometric center reference point A of the mobile terminal in a plane LRM determined by three points, namely a left ear midpoint L point, a right ear R point and an upper lip midpoint or a nose tip M point of a human head electromagnetic model;
(1.2) making LRM form an isosceles plane triangle, i.e. ML = MR;
(1.3) keeping the plane of the display screen of the mobile terminal vertical to the LRM plane;
and (1.4) placing the component to be tested on a three-dimensional testing rotary table.
Further, the test method can also have the following characteristics: and the step (2) comprises the step of placing the component to be tested and the simulator in an anechoic chamber shielded from outside radio.
Further, the test method can also have the following characteristics: the distance between the M point and the A point is preferably 320mm or 400mm.
Further, the test method can also have the following characteristics: the step (4) can be further divided into the following steps:
(4.1) carrying out space angle discretization on the measured spherical surface of the far field region;
(4.2) collecting receiving sensitivity data corresponding to the discretization space angle to form a data matrix;
and (4.3) carrying out weighting processing on the data matrix to obtain a derivative value of the total receiving sensitivity parameter.
Further, the test method can also have the following characteristics: the component to be tested and the simulator need to meet remote area test conditions, namely the space distance between the antenna of the component to be tested and the antenna of the simulator is larger than the minimum test distance of the antenna determined by the electromagnetic scattering size parameter and the working frequency parameter of the component to be tested, wherein the electromagnetic scattering size parameter is formed by the component to be tested or the component to be tested plus nearby electromagnetic scattering bodies influencing the performance of the component to be tested.
Further, the test method can also have the following characteristics: the simulator is a base station simulator or a network simulator.
The invention also provides a system for testing the receiving sensitivity of the mobile terminal, which comprises a component to be tested, a three-dimensional testing turntable and a total tester, wherein the component to be tested is formed by the mobile terminal and a human head electromagnetic model, the component to be tested is positioned on the three-dimensional testing turntable, the simulator of the component to be tested and the total tester are positioned in a shielding environment shielded by external radio, and the total tester is connected with a host, wherein the host is connected with the total tester
A geometric test model is established between the mobile terminal of the component to be tested and the human head electromagnetic model,
the simulator is used for simulating signals at the base station side, so that the mobile terminal and the simulator keep normal wireless transmitting and receiving working states;
the main body of the general measuring instrument is used for sampling and testing the receiving sensitivity parameter data of the component to be tested;
and the host is used for obtaining the total receiving sensitivity parameter of the component to be tested according to the data.
Further, the test system can also have the following characteristics: the assembly to be tested is established with the following geometric test model:
a bottom plane geometric center reference point A of the mobile terminal is positioned in a plane LRM determined by three points, namely a left ear midpoint L point, a right ear R point and an upper lip midpoint or a nose tip M point of the human head electromagnetic model; LRM constitutes an isosceles plane triangle, i.e. ML = MR; the plane of the display screen of the mobile terminal is vertical to the LRM plane.
Further, the test system can also have the following characteristics: the shielding environment is an anechoic chamber.
Further, the test system can also have the following characteristics: the component to be tested and the simulator also meet remote area test conditions, namely the space distance between the antenna of the component to be tested and the antenna of the simulator is larger than the minimum test distance of the antenna determined by the electromagnetic scattering size parameter and the working frequency parameter of the component to be tested, wherein the electromagnetic scattering size parameter is formed by the component to be tested or the component to be tested and nearby electromagnetic scattering bodies influencing the performance of the component to be tested.
The method and the system for testing the receiving sensitivity of the mobile terminal have the advantages of low environmental requirement, easy test, simplicity, convenience, practicability and the like.
Drawings
FIG. 1 is a front view of an OTA TRS device under test under VPS;
fig. 2 is a schematic diagram of the structure of a mobile video terminal UE.
FIG. 3 is a side view of an OTA TRS under VPS component under test;
FIG. 4 is a schematic diagram representing MAT test coordinate definitions;
fig. 5 is a schematic diagram of a mobile video terminal wireless communication link.
Detailed Description
The following describes in detail a system and method for testing OTA TRS in a video physical scene VPS according to a preferred embodiment of the present invention with reference to the accompanying drawings. A mobile terminal under VPS is hereinafter defined as a mobile video terminal to be distinguished from a conventional mobile terminal.
The test system in this embodiment includes a to-be-tested component composed of a mobile video terminal UE and a human head electromagnetic model, a three-dimensional test turntable, and a total tester, as shown in fig. 5, the to-be-tested component is located on the three-dimensional test turntable. The component to be tested and the simulator of the general measuring instrument are positioned in a shielding area shielded from outside radio, and in the embodiment, the component to be tested and the network simulator thereof are placed in an anechoic chamber. The measuring assembly is connected to a main unit (not shown), wherein
A geometric test model is established between the mobile terminal of the component to be tested and the human head electromagnetic model,
the simulator is used for simulating signals at the base station side, so that the mobile terminal and the simulator are kept in normal wireless transmitting and receiving working states;
the main body of the general measuring instrument is used for sampling and testing the receiving sensitivity parameter data of the component to be tested;
and the host is used for obtaining the total receiving sensitivity parameter of the component to be tested according to the data.
The simulator may be a base station simulator or a network simulator.
The test method of the embodiment comprises the following specific steps:
(1) Establishing a geometric test model of the component to be tested, which is formed by a mobile terminal and a human head electromagnetic model, and placing the component to be tested on a three-dimensional test turntable;
as shown in fig. 1 and 3, it further includes the steps of:
(1.1) a geometric center reference point A of the bottom plane of the wireless video terminal is arranged in a plane LRM determined by three points of an L point (a middle point of a left ear), an R point (a middle point of a right ear) and an M point (a middle point of an upper lip) of a human head electromagnetic model,
(1.2) LRM constitutes an isosceles plane triangle, i.e. ML = MR.
(1.3) keeping the plane of the display screen of the wireless video terminal perpendicular to the LRM plane, and making MA = Dx =32cm.
And (1.4) placing the component to be tested on an OTA three-dimensional testing turntable.
In addition, as shown in fig. 5, according to the testing method provided by the present invention, the device under test and the simulator should also satisfy the remote testing condition, that is, the spatial distance r between the antenna of the device under test and the antenna of the simulator is greater than the minimum antenna testing distance determined by the electromagnetic scattering size parameter and the operating frequency parameter of the device under test, which are jointly constituted by the device under test or the device under test plus nearby electromagnetic scattering bodies (including human body, etc.) that affect the performance of the device under test, as described in the following document [1].
[1]TSG-RAN Working Group 4(Radio)meeting#39 Shanghai，China， May 8th-13th，2006 R4-060597。
(2) And placing the component to be tested and the network simulator thereof in an electric wave darkroom shielded from outside radio.
(3) And establishing a normal wireless transmitting and receiving link between the component to be tested and the network simulator.
(4) Referring to fig. 3 and 4, the TRS parameter of the dut is measured, which may be further divided into the following steps:
(4.1) discretizing a spatial angle on a measured spherical surface of a Remote Terminal Unit (RTUT) far field region of a component to be measured;
(4.2) collecting receiving sensitivity data S corresponding to the sampling point of the discretization space angle v Form a data matrix [ S ] v (m，n)] M×N ；
And (4.3) carrying out weighting processing according to the data matrix, and calculating according to the following formula to obtain a receiving sensitivity value RS OTA:
in the formula, M =1,2, \ 8230M, N =1,2, \ 8230N, N, M is more than or equal to 1, N is more than or equal to 1, wherein M isTaking the number of sampling points of the equatorial plane and N is the number of sampling points of the taken vertical plane, such as M =180 and N =36. S. the v Is a point in space (theta) m ，φ n ) The reception sensitivity value of (1).
Fig. 4 is a schematic diagram illustrating MAT (Multiple Access Terminal) test coordinate definition, where the XOY plane is the reference plane in fig. 3, and the Z-axis is an upward dotted line passing through the reference point a and perpendicular to the reference plane in fig. 3.
It can be seen from the above embodiments that the method and system for testing the receiving sensitivity parameters of the mobile terminal of the present invention have the advantages of low environmental requirements, easy testing, simplicity, convenience, and the like.
Of course, the present invention may have other embodiments, for example, when a geometric test model of the device to be tested is established, the M point is not limited to the middle point of the upper lip, but may be the tip of the nose or other positions of the face, and the Dx value may have different values in different embodiments, such as 300mm,400mm, or other values. Depending on the size of the anechoic chamber, the total measuring instrument can be located wholly or partially inside the anechoic chamber. The general measuring instrument can also be provided with a display screen, and the receiving sensitivity value of the measured sampling point can be sent to the host computer and displayed on the display screen. Various modifications and changes may be made by those skilled in the art without departing from the spirit and scope of the invention, and it is intended that all such modifications and changes fall within the scope of the appended claims.
Claims (11)
1. A method for testing the receiving sensitivity of a mobile terminal comprises the following steps:
(1) Establishing a geometric test model of the component to be tested, which is formed by a mobile terminal and a human head electromagnetic model, and placing the component to be tested on a three-dimensional test turntable;
(2) Placing the component to be tested and the simulator in a test environment shielded from outside radio;
(3) Keeping the mobile terminal and the simulator in normal wireless transmitting and receiving working states;
(4) And testing and processing to obtain the receiving sensitivity parameters.
2. The test method according to claim 1,
the establishment of the geometric test model in the step (1) can be further divided into the following steps:
(1.1) placing a bottom plane geometric center reference point A of the mobile terminal in a plane LRM determined by three points, namely a left ear midpoint L point, a right ear R point and an upper lip midpoint or a nose tip M point of a human head electromagnetic model;
(1.2) making LRM form an isosceles plane triangle, i.e. ML = MR;
(1.3) keeping the plane of the display screen of the mobile terminal vertical to the LRM plane;
and (1.4) placing the component to be tested on a three-dimensional testing rotary table.
3. The test method of claim 1,
and the step (2) comprises the step of placing the component to be tested and the simulator in an electric wave darkroom which is shielded from the outside by radio.
4. The test method of claim 2,
the distance between the M point and the A point is preferably 320mm or 400mm.
5. The test method according to claim 1, wherein step (4) is further divided into the following steps:
(4.1) carrying out space angle discretization on the measured spherical surface in the far-field region;
(4.2) collecting receiving sensitivity data corresponding to the discretization space angle to form a data matrix;
and (4.3) carrying out weighting processing on the data matrix to obtain a derivative value of the total receiving sensitivity parameter.
6. The test method according to one of claims 1 to 5,
the component to be tested and the simulator need to meet remote area test conditions, namely the space distance between the antenna of the component to be tested and the antenna of the simulator needs to be larger than the minimum test distance of the antenna determined by the electromagnetic scattering size parameter and the working frequency parameter of the component to be tested, wherein the electromagnetic scattering size parameter is formed by the component to be tested or the component to be tested plus nearby electromagnetic scattering bodies influencing the performance of the component to be tested.
7. The test method according to one of claims 1 to 5,
the simulator is a base station simulator or a network simulator.
8. The utility model provides a mobile terminal sensitivity of reception's test system, its characterized in that includes the subassembly that awaits measuring that constitutes by mobile terminal and people's head electromagnetic model, three-dimensional test revolving stage to and always surveys the appearance, the subassembly that awaits measuring is located three-dimensional test revolving stage, the simulator of subassembly and always surveying the appearance that awaits measuring is located the shielded environment with external radio shielding, always survey the appearance and link to each other with the host computer, wherein
A geometric test model is established between the mobile terminal of the component to be tested and the human head electromagnetic model,
the simulator is used for simulating signals at the base station side, so that the mobile terminal and the simulator keep normal wireless transmitting and receiving working states;
the main body of the general measuring instrument is used for sampling and testing the receiving sensitivity parameter data of the component to be measured;
and the host is used for obtaining the total receiving sensitivity parameter of the component to be tested according to the data.
9. The test system of claim 8,
the assembly to be tested is established with the following geometric test model:
a bottom plane geometric center reference point A of the mobile terminal is positioned in a plane LRM determined by three points, namely a left ear midpoint L point, a right ear R point and an upper lip midpoint or a nose tip M point of the human head electromagnetic model; LRM constitutes an isosceles plane triangle, i.e. ML = MR; the plane of the display screen of the mobile terminal is vertical to the LRM plane.
10. The test system according to claim 8 or 9,
the shielding environment is an anechoic chamber.
11. The test system of claim 10,
the component to be tested and the simulator also meet remote area test conditions, namely the space distance between the antenna of the component to be tested and the antenna of the simulator is larger than the minimum test distance of the antenna determined by the electromagnetic scattering size parameter and the working frequency parameter of the component to be tested, wherein the electromagnetic scattering size parameter is formed by the component to be tested or the component to be tested and nearby electromagnetic scattering bodies influencing the performance of the component to be tested.
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Cited By (7)
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| WO2009137980A1 (en) * | 2008-05-15 | 2009-11-19 | 中兴通讯股份有限公司 | System and method for the wireless terminal receiving sensitivity performance test based on data mode |
| CN102075271A (en) * | 2011-01-11 | 2011-05-25 | 工业和信息化部通信计量中心 | Subjective testing system for evaluating aerial receptivity of mobile phone television terminal |
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| CN102237934A (en) * | 2010-04-26 | 2011-11-09 | 中国移动通信集团公司 | Test method of terminal data transmission performance, system and apparatus thereof |
| WO2011160479A1 (en) * | 2010-06-24 | 2011-12-29 | 惠州Tcl移动通信有限公司 | Method, apparatus and detection device for testing sensitivity of gsm communication terminal |
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| KR100531619B1 (en) * | 2003-04-10 | 2005-11-28 | 주식회사 케이티프리텔 | Apparatus and method of receiving sensitivity measuring for communication system with receiving only path |
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| CN102237934A (en) * | 2010-04-26 | 2011-11-09 | 中国移动通信集团公司 | Test method of terminal data transmission performance, system and apparatus thereof |
| WO2011160479A1 (en) * | 2010-06-24 | 2011-12-29 | 惠州Tcl移动通信有限公司 | Method, apparatus and detection device for testing sensitivity of gsm communication terminal |
| US9414324B2 (en) | 2010-06-24 | 2016-08-09 | Huizhou Tcl Mobile Communication Co., Ltd. | Sensitivity testing method and device and inspection apparatus for a GSM communication terminal |
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| CN102075271B (en) * | 2011-01-11 | 2013-06-26 | 工业和信息化部通信计量中心 | Subjective testing system for evaluating aerial receptivity of mobile phone television terminal |
| CN102176688B (en) * | 2011-01-11 | 2014-05-21 | 工业和信息化部通信计量中心 | Objective test system for evaluating receiving performance of mobile TV terminal in air |
| CN102075271A (en) * | 2011-01-11 | 2011-05-25 | 工业和信息化部通信计量中心 | Subjective testing system for evaluating aerial receptivity of mobile phone television terminal |
| CN103257282A (en) * | 2013-05-02 | 2013-08-21 | 惠州Tcl移动通信有限公司 | Terminal antenna total radiated power (TRP) fast testing method |
| CN103257282B (en) * | 2013-05-02 | 2016-01-13 | 惠州Tcl移动通信有限公司 | A kind of terminal antenna TRP method for rapidly testing |
| CN109067477A (en) * | 2018-06-27 | 2018-12-21 | 深圳市共进电子股份有限公司 | Wireless receiving sensitivity test method, system and computer equipment |
| CN109067477B (en) * | 2018-06-27 | 2021-05-28 | 深圳市共进电子股份有限公司 | Wireless receiving sensitivity test method, system and computer equipment |
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