CN103986532B - A kind of relative value electromagnetic interference evaluation method of multi-mode multi-standby terminal - Google Patents

Abstract

A relative value electromagnetic interference evaluation method for multi-mode multi-standby terminal, is characterized in, test terminal, at the equivalent omnidirectional sensibility EIS of optimum sensitivity point, without to its TIS of each channel test, does not rely on the maximum limit value of total omnidirectional sensitivity; Multimode terminal is adopted to full frequency band frequency sweep EIS test, reflect its receiving sensitivity on each channel, carry out full frequency band assessment; Relative value is passed judgment on: in conjunction with measured terminal three dimensions antenna radiation pattern, by choosing angle and the polarization of optimum receiving sensitivity point, fully reflect the susceptibility of measured terminal electromagnetic interference, indirectly reflected user's signal stabilization degree in cell switch process; Method of the present invention is applied during without total receiving sensitivity limit value in terminal. Only need the equivalent omnidirectional sensibility (EIS) of test terminal at optimum sensitivity point, save time, there is versatility, do not rely on the maximum limit value of total omnidirectional sensitivity, there is applicability and operability widely.

Description

A kind of relative value electromagnetic interference evaluation method of multi-mode multi-standby terminal

Technical field

The invention belongs to wireless communication technology field, particularly at the environment of multiple communication network modes coexistUnder, the relative value electromagnetic interference evaluation method of multi-mode multi-standby terminal.

Background technology

2G, 3G and 4G network will coexist in the future for a long period of time, meanwhile, along with heterogeneous networkDevelop rapidly, conventional cellular network and other wireless technology are as WLAN (WirelessLocalAreaNetwork, WLAN) between fusion become a kind of development trend, can provide better use body for userTest. Therefore, following multiple network pattern is by long-term co-existence.

Under the environment of multiple network modes coexist, each operator and manufacturer terminal have carried out multi-mode multi-standby terminalResearch. Compared with singly treating terminal with tradition, multi-mode multi-standby terminal disposes the wireless module of multiple different mode,Can support multiple wireless-access mode to receive and dispatch simultaneously, the network service of various modes is provided. Multi-mode and multi-standbyWhen the concurrent work of multiple modules of terminal, up the transmitting of any one module may be passed through antenna feed-inThe receiving element of other module, forms and disturbs other module, affects the down-link reception performance of other module. ForGuarantee that multi-mode multi-standby terminal is controlled at the electromagnetic interference between each module in allowed band, the concurrent work of multimode groupTime still keep good receiving sensitivity, need to be to multi-mode multi-standby terminal the electromagnetic interference under the concurrent state of multimodeDegree and receiving sensitivity are tested.

(Over-the-Air, the OTA) test of eating dishes without rice or wine has reflected radiation and the receptivity of terminal in space,It is the important means that detects wireless terminal spacial radio frequency performance. The OTA method of testing that tradition is singly treated terminalFor maturation, employing total omnidirectional sensitivity (TotalIsotropicSensitivity, TIS) measurement terminalSpace receiving sensitivity, the descending receiving ability of reflection terminal. For multi-mode multi-standby terminal, how to test manyElectromagnetic interference degree under the concurrent state of mould and receiving sensitivity are the current problems facing.

Traditional OTATIS tests for singly treating Terminal Design, can not directly apply to multi-mode multi-standby terminalReceiving sensitivity test. Tradition is singly treated terminal, and in each frequency range, the TIS index difference on each channel is notGreatly, can be only while therefore testing TIS the minimum, middle of tested frequency range or Senior Three channel be measured,Its result can reflect the TIS performance of terminal in whole frequency range to a certain extent. But to multi-mode and multi-standby eventuallyWhen in end, a certain module is tested, except tested module, other module can produce tested module dry in the time of workDisturb, and between this module, disturb often not full frequency band interference, and just to tested module working frequency range insideDivide channel to exert an influence. In addition, tested module the most serious disturbed channel is not likely its working frequency rangeMinimum, middle or high channel. Therefore when multi-mode multi-standby terminal is in the concurrent duty of multimode lower time, at quiltIt is inadequate in frequency measurement section, only selecting that several representative channel test, and must carry out full frequency band sweep checkTest its receptivity on each channel in whole band limits.

Singly treat that terminal generally characterizes its terminal receptivity with TIS, but need while carrying out full frequency band sweep check rightIn tested frequency range, multiple channels are tested, if each channel is tested respectively to its TIS, and testing time costToo large.

The evaluation method that the application proposes only needs test terminal sensitive in the equivalent omnidirectional of optimum sensitivity pointDegree (EIS), without to its TIS of each channel test, saves time.

Singly treat that the clear and definite maximum limit value that there is no that the total omnidirectional sensitivity under scene has specifies, now requires multimodeThe method of testing of multi-standby terminal electromagnetic interference has versatility, does not rely on the maximum limit of total omnidirectional sensitivityValue.

Summary of the invention

Based on the shortcoming and defect of traditional OTATIS test macro and method of testing, the application proposes a kind of multimodeThe relative value electromagnetic interference evaluation method of multi-standby terminal, this method should during without total receiving sensitivity limit value in terminalWith.

The object of the present invention is achieved like this: a kind of relative value electromagnetic interference judge side of multi-mode multi-standby terminalMethod, comprises electromagnetic interference test system, it by measure antenna, two group communication antennas, two base station simulators andTurret systems composition, its signal transitive relation is: dry to the electromagnetism of module B in test measured terminal module AWhile disturbing, the base station simulator output downstream signal that module B is corresponding, by measuring aerial radiation to measured terminal,Up the transmitting of measured terminal module B is connected to module B base station simulator by a group communication antenna,Thereby set up test communications loop between terminal module B and its base station simulator; In addition, measured terminalBetween module A and its base station simulator, set up its communications loop by another group communication antenna; Coordinate turntable systemAfter system, measuring terminals module B is in three dimensions receiving sensitivity at any angle, and final integration obtains itTotal omnidirectional receiving sensitivity; By switch module A base station simulator, measure respectively module B in single-engine operationUnder state and with the concurrent duty of module A bimodulus under receiving sensitivity;

Relative value electromagnetic interference is passed judgment on: test terminal is in the equivalent omnidirectional sensibility EIS of optimum sensitivity point, nothingNeed, to its TIS of each channel test, not rely on the maximum limit value of total omnidirectional sensitivity; Multimode terminal is adoptedWith full frequency band frequency sweep EIS test, reflect its receiving sensitivity on each channel, carry out full frequency band assessment;Relative value is passed judgment on: in conjunction with measured terminal three dimensions antenna radiation pattern, by choosing optimum receiving sensitivity pointAngle and polarization, fully reflect and the susceptibility of measured terminal electromagnetic interference indirectly reflected that user cuts in communityChange signal stabilization degree in process; Concrete steps are as follows:

1). close interference module A, test tested module B under single-engine run, low in tested frequency range, in,The TIS of high channel;

2). according to step 1 test result, determine the best spirit of tested module B between basic, normal, high channel regionSensitivity is put corresponding dimensional orientation, is measured the polarization of antenna;

3). open interference module A, make it with maximum power transmission, make terminal works at the concurrent state of multimode;

4). will between the channel region of current module B test frequency range, be divided between low channel region, between middle channel region and highThree parts between channel region, each interval is respectively with the space bit of the optimum sensitivity point on high, medium and low three channelsPut and measure the polarization of antenna as polarizing with reference to position and reference.

The present invention has following remarkable technological progress: the evaluation method that the application proposes, only needs test terminal to existThe equivalent omnidirectional sensibility (EIS) of optimum sensitivity point, without to its TIS of each channel test, saves time.Singly treat that the clear and definite maximum limit value that there is no that the total omnidirectional sensitivity under scene has specifies, it is many that the application proposesMould multi-standby terminal relative value electromagnetic interference evaluation method has versatility, does not rely on the maximum of total omnidirectional sensitivityValue limit value, has applicability and operability widely.

Adopt full frequency band sweep check. Tradition singly treats only to select in terminal OTATIS test tested frequency rangeLow, a middle and Senior Three channel is measured, and we adopt full frequency band frequency sweep EIS to test to multimode terminalReflect its receiving sensitivity on each channel. Full frequency band assessment.

Relative value method of testing is in conjunction with measured terminal three dimensions antenna radiation pattern, sensitive by choosing optimum receptionSpend angle and the polarization of point, can fully reflect the susceptibility of measured terminal electromagnetic interference, indirectly reflected userSignal stabilization degree in cell switch process, has multiplicity with respect to actual operation market survey measurement high, becomesThe feature that this is low.

Brief description of the drawings

The test macro block diagram that Fig. 1 uses for evaluation method of the present invention

Detailed description of the invention

Multimode terminal Electromagnetic Interference Test can be tested by traditional OTA darkroom, and test macro is as Fig. 1Shown in, wherein mainly comprise and measure antenna, two group communication antennas, two base station simulators and turret systems etc.In test measured terminal module A during to the electromagnetic interference of module B, the base station simulator output that module B is correspondingDownstream signal, by measuring aerial radiation to measured terminal, it is logical that measured terminal module B up transmitsCross a group communication antenna and be connected to module B base station simulator, thereby at terminal module B and its base station simulatorBetween set up test communications loop, as shown in solid-line signals in Fig. 1. In addition, measured terminal module A withBetween its base station simulator, set up its communications loop by another group communication antenna, as dotted line signal institute in Fig. 1Show. Coordinate after turret systems, test macro can connect at three dimensions by measuring terminals module B at any angleReceive sensitivity, and final integration obtains Qi Zong omnidirectional receiving sensitivity. By switch module A base station simulator,Can measure respectively module B under single-engine operation state and with the concurrent duty of module A bimodulus under connectReceive sensitivity. Concrete steps are as follows.

1). close interference module A, test tested module B under single-engine run, low in tested frequency range, in,The TIS of high channel.

2). according to step 1 test result, determine the best spirit of tested module B between basic, normal, high channel regionSensitivity is put corresponding dimensional orientation, is measured the polarization of antenna.

3). open interference module A, make it with maximum power transmission, make terminal works at the concurrent state of multimode.

4). will between the channel region of current module B test frequency range, be divided between low channel region, between middle channel region and highThree parts between channel region, each interval is respectively with the space bit of the optimum sensitivity point on high, medium and low three channelsPut and measure the polarization of antenna as polarizing with reference to position and reference.

The key technology main points of relative value electromagnetic interference evaluation method of the present invention are as follows:

1). relative value evaluation method. The method test terminal that the application proposes is in the equivalence of optimum sensitivity pointOmnidirectional sensibility (EIS), without to its TIS of each channel test, saves time. Singly treat total complete under sceneWhat have to sensitivity there is no clear and definite maximum limit value regulation, and the multi-mode multi-standby terminal electromagnetism that the application proposes is dryDisturb method of testing and there is versatility, do not rely on the maximum limit value of total omnidirectional sensitivity, have widely and be suitable forProperty and operability.

2). adopt full frequency band sweep check. Tradition singly treats only to select in terminal OTATIS test tested frequency rangeMinimum, a middle and Senior Three channel is measured, and we adopt full frequency band frequency sweep EIS to multimode terminalTest reflects its receiving sensitivity on each channel. Full frequency band assessment.

3). relative value method of testing is in conjunction with measured terminal three dimensions antenna radiation pattern, by choosing optimum receptionThe angle of sensitive point and polarization, can fully reflect and indirectly reflect the susceptibility of measured terminal electromagnetic interferenceUser is signal stabilization degree in cell switch process, surveys to measure to have multiplicity with respect to actual operation marketHeight, the feature that cost is low.

Claims (1)

1. a relative value electromagnetic interference evaluation method for multi-mode multi-standby terminal, comprises electromagnetic interference test system,It forms by measuring antenna, two group communication antennas, two base station simulators and turret systems, and its signal transmission is closedBe: in test measured terminal module A during to the electromagnetic interference of module B, the base station simulation that module B is correspondingDevice output downstream signal, by measuring aerial radiation to measured terminal, the up transmitting of measured terminal module BSignal is connected to module B base station simulator by a group communication antenna, thereby in terminal module B and its base stationBetween simulator, set up test communications loop; In addition, between measured terminal module A and its base station simulatorSet up its communications loop by another group communication antenna; Coordinate after turret systems, measuring terminals module B is threeDimension space is receiving sensitivity at any angle, and final integration obtains Qi Zong omnidirectional receiving sensitivity; Pass through switchModule A base station simulator, measures respectively module B under single-engine operation state and concurrent with module A bimodulusReceiving sensitivity under duty; It is characterized in that:

Relative value electromagnetic interference is passed judgment on: test terminal is in the equivalent omnidirectional sensibility EIS of optimum sensitivity point, nothingNeed, to its TIS of each channel test, not rely on the maximum limit value of total omnidirectional sensitivity; Multimode terminal is adoptedWith full frequency band frequency sweep EIS test, reflect its receiving sensitivity on each channel, carry out full frequency band assessment;Relative value is passed judgment on: in conjunction with measured terminal three dimensions antenna radiation pattern, by choosing optimum receiving sensitivity pointAngle and polarization, fully reflect and the susceptibility of measured terminal electromagnetic interference indirectly reflected that user cuts in communityChange signal stabilization degree in process; Concrete steps are as follows:

1). close interference module A, test tested module B under single-engine run, low in tested frequency range, in,The TIS of high channel;

2). according to step 1 test result, determine the best spirit of tested module B between basic, normal, high channel regionSensitivity is put corresponding dimensional orientation, is measured the polarization of antenna;

3). open interference module A, make it with maximum power transmission, make terminal works at the concurrent state of multimode;

4). will between the channel region of current module B test frequency range, be divided between low channel region, between middle channel region and highThree parts between channel region, each interval is respectively with the space bit of the optimum sensitivity point on high, medium and low three channelsPut and measure the polarization of antenna as polarizing with reference to position and reference.