CN101512941B - Method and device for radiated performance of a wireless device - Google Patents

Method and device for radiated performance of a wireless device Download PDF

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CN101512941B
CN101512941B CN2007800329017A CN200780032901A CN101512941B CN 101512941 B CN101512941 B CN 101512941B CN 2007800329017 A CN2007800329017 A CN 2007800329017A CN 200780032901 A CN200780032901 A CN 200780032901A CN 101512941 B CN101512941 B CN 101512941B
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wireless device
test
antenna
signal
daily record
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CN101512941A (en
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G·A·布赖特
D·M·菲恩纳蒂
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Qualcomm Inc
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Qualcomm Inc
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Abstract

Systems, methods, apparatus, processors and computer-readable media include a radiated testing module that executes a predetermined radiated performance test on a wireless device. The test dictates various performance-related parameters to measure and log at each of a plurality of predetermined positions. Further, the wireless device receives synchronization information operable to enable synchronization between the logged measurements and each of the positions. The synchronized log allows the wireless device, or another apparatus, to determine a radiated performance characteristic based on a predetermined analysis protocol. Further, the described embodiments allow for the determination of several radiated performance characteristics in a single test, using a single, unaltered wireless device.

Description

The method and apparatus that is used for the radiance of definite wireless device
Require priority based on 35U.S.C § 119
The application requires to enjoy the provisional application No.60/843 that the name of submitting on September 8th, 2006 is called " RADIATEDPERFORMANCE OF A WIRELESS DEVICE ", 035 priority, it transfers the application's assignee and incorporates clearly by reference this paper into.
Technical field
Described embodiment relates to Wireless Telecom Equipment, relates more specifically to for system, method, device, processor and the computer-readable medium determined with the radiance of the antenna system of wireless device association.
Background technology
Wireless device utilizes radio wave that long haul communication is provided, and there is no the physical constraint of wired system.Wireless device sends and receives information via radio wave, wherein can be on predetermined frequency band carry information.The antenna and the interlock circuit that are connected to transmitter and receiver allow these radio wave signals of wireless device sending and receiving.The design of wireless device (comprising antenna and the various assemblies relevant to sending and receiving) affects the ability of wireless device sending and receiving radio wave signal, therefore limits and affected the radiance of equipment.So, need to determine and adjust the radiance of wireless device, in order to optimize the ability that wireless device transmits radio wave signal.
Yet the method for existing definite wireless device radiance has a lot of defectives.Some tests that are used for definite radiance relate to be revised the destructiveness of wireless device.For example, in an example, the signal path interrupted between antenna and receiver also is routed to external radio frequency (" RF ") connector again.Thereby then by connecting at this connector place with work, the external testing instrument of the substitute of the receiver on wireless device is carried out the radiation signal power measurement.The existence of external RF connector and associated external cable can make the actual emanations performance distortion of wireless device.In addition, due to required auxiliary instrumentation and the additional manpower of modifying, make these destructive modifications increase the cost of test process.In addition, owing to making the wireless device of revising to be used for other test, make destructive the modification further increase cost.
In addition, in wireless communication system, can be via many propagation paths arrival receivers from the RF modulation signal of transmitter.The characteristic of propagation path is the temporal evolution due to the many factors such as decline and multipath usually.
In addition, structure and the surrounding terrain (comprising wall and hillside) such as building all can work to the scattering and the reflection that transmit.The scattering that transmits and reflection cause a plurality of signal paths from transmitted from transmitter to receiver.Effect to a plurality of signal paths changes along with the movement of receiver.
Other signal source also works to the deterioration of desired signal.Other signal source can be have be intended to desired signal same frequency on other transmitter of operating, and the transmitter that generates false signal in the frequency band of desired signal.Another signal worsens the source and may generate in the inside of receiver self.Signal amplifier and signal processing section in receiver may reduce with respect to thermal noise level the grade of desired signal.Signal amplifier in receiver and processor also can generted noises, perhaps make the distorted signals that receives, thereby further reduce its quality.
In order diversity to be provided and to improve performance for harmful path effects, can use a plurality of transmitting antennas and reception antenna.If it is incoherent (namely that the propagation path between transmitting antenna and reception antenna is linearity, transmission on one paths can not form the linear combination of the transmission on other path), usually be so at least to a certain extent, the possibility of correct receive data transmission increases along with the increase of number of antennas.Therefore, along with the increase of transmitting antenna and reception antenna number, diversity also increases, and performance is improved usually.
In addition, wireless device can be due to a plurality of former thereby use a plurality of antennas.For example, wireless device often need to operate and serve a plurality of operator schemes on a plurality of being with.Another reason is to realize advanced transceiver architecture, and it uses a plurality of antennas for improvement of the performance of the partial mode in these patterns of this area.When operating simultaneously, thereby these patterns can the phase mutual interference lower overall performance.Therefore, importantly, be designed for the accurate device of radiance that estimation can be caught the wireless device of self-interference effect.Current method needs some steps to estimate the equipment/Antenna Design that makes up, and there is indefinite property in the testing precision of relatively current " wired " test.Therefore, also need develop reliable design and method of testing.
Therefore, need new and improved system, device, computer-readable medium, processor and method for determining the wireless device radiance.
Summary of the invention
Described embodiment allows to determine one or more radiance characteristics with single immovable wireless device in single test, such as equivalent isotropically radiated power (" EIRP "), receiver sensitivity, total radiant power (" TRP "), total omnidirectional sensitivity (" TIS "), and envelope correlation, these characteristics are relevant to the receiver diversity performance.
In a further embodiment, a kind of method of radiance characteristic of definite wireless device comprises: each in a plurality of relevant moment determines that constantly wherein a plurality of relevant moment are relevant to the zero hour by the measured characteristics of signals of the only forward link signal of wireless device reception; And each in a plurality of relevant moment is engraved in when relevant in daily record on wireless device and records measured characteristics of signals.In related embodiment, configure at least one processor to carry out aforesaid operations.In another related embodiment, computer program is present in computer-readable medium, and vectoring computer equipment is carried out aforesaid operations when carrying out this computer program.
In another embodiment, a kind of device of the radiance characteristic for determining wireless device comprises for the module of carrying out following operation: constantly determine the measured characteristics of signals of the only forward link signal that received by wireless device in each of a plurality of relevant moment, wherein a plurality of relevant moment are relevant to the zero hour; And each in a plurality of relevant moment is engraved in when relevant in daily record on wireless device and records measured characteristics of signals.
In another embodiment, a kind of controller of the radiance characteristic for determining wireless device comprises the radio-signal system that can be used for carrying out following operation: constantly determine the measured characteristics of signals of the only forward link signal that received by wireless device in each of a plurality of relevant moment, wherein a plurality of relevant moment are relevant to the zero hour; And each in a plurality of relevant moment is engraved in when relevant in daily record on wireless device and records measured characteristics of signals.
Description of drawings
Fig. 1 is the schematic diagram for an embodiment of the system that determines the wireless device radiance;
Fig. 2 is the schematic diagram of an embodiment of the wireless device that uses in the system of Fig. 1;
Fig. 3 is the schematic diagram that is operable in an embodiment of the user interface/view on the wireless device of Fig. 1;
Fig. 4 is the schematic diagram of an embodiment of the controller system that uses in the system of Fig. 1;
Fig. 5 is the schematic diagram by an embodiment of the parts of the predetermined radiance test of the wireless device of Fig. 1 and/or controller system use;
Fig. 6 is the schematic diagram of an embodiment of the control test log related with the controller system of Fig. 4;
Fig. 7 is the flow chart of an embodiment of the method for the wireless device radiance that be used for to determine Fig. 1 that moves on wireless device;
Fig. 8 is the flow chart at an embodiment of the method for the wireless device radiance that is used for definite Fig. 1 of the upper operation of device (for example controller system);
Fig. 9 compares with the antenna ρ value of measuring in the field of many dissimilar phones, according to the chart of the antenna ρ value of measuring from complicated antenna pattern of described embodiment; And
Figure 10 is a form, and it comprises that the expression of calculating according to described embodiment has many varying environments of introducing electromagnetic field of different behaviors or the ρ value of channel model.
Embodiment
With reference to Fig. 1, in one embodiment, the system 10 that is used for the radiance of definite wireless device 12 comprises controller system 14, and it is used for generating control signal 16 so that radio wave signal 18 is sent to wireless device 12.Wireless device 12 is positioned at test cabinet 20, with 22 places, position that tested by the predetermined radiance of controller system 14 operations in the 24 a plurality of possible positions that are associated.Control signal 16 comprises location component 26, and it stipulates the physical coordinates of selected location 22, thereby the motion of navigation system 28 is indicated the position of installing to wireless device 12.In addition, control signal 16 comprises corresponding signaling component 30, and it stipulates radio wave signal 18, thus the transmission that indication is undertaken by radio wave signal system 32.In one embodiment, for example, the base station in radio-signal system 32 analog cellular telephone networks, so radio wave signal 18 can be thought forward channel signal.In one embodiment, only with the base station of forward direction link mode operation, only there is forward link in this expression and does not have reverse link (that is, wireless device 12 is not configured to or is not used in any signal is sent it back the base station) in the base station simulation.In addition, radio wave signal 18 can comprise reality or reference signal characteristics 34 (such as signal power) and predetermined synchrodata 36 (such as be used for will 22 places obtain in the selected location measurement result be synchronized to the information of ad-hoc location and/or time), as here further describing.For example, reference signal characteristics 34 is known features or given value, and it can be used as the radix value for subsequent calculations (for example gain is calculated).Similarly, predetermined synchrodata 36 allows the measurement result of wireless device 12 relevant with the physical coordinates of the position 22 of wireless device 12 when obtaining measurement.
In one embodiment, in order to determine the TIS as the radiance 42 of wireless device 12, the first step is to determine the receiver gain directional diagram of wireless device 12.A kind of possible method can comprise the measurement result of the received signal strength indicator (" RSSI ") of the special angle position that obtains wireless device 12.For each rssi measurement result, the log recording of wireless device 12 includes timestamp and the rssi measurement result of wireless device 12.When navigation system 28 rotatable coordinate axis, controller system 14 position and time concern daily record in record elevation location and the relation of the time on controller system 14 of wireless device 12.Yet, due to the clock of wireless device 12 and the clock asynchronous (for example, due to timing differential) of controller system 14, the position that concerns daily record and controller system 14 of the RSSI of wireless device 12 and time and time concern that daily record is asynchronous.In one embodiment, in order to solve this stationary problem, predetermined synchrodata 36 is included in wireless device 12 and begins to rotate the output pulses that generates and sends wireless device 12 before.For example, controller system 14 generates the output pulses with predetermined amplitude, and wherein controller system 14 can obtain the machine time (take ms as unit) at the trailing edge of output pulses, as starting point fiducial time of the journal file on controller system 14.Subsequently with this fiducial time starting point determine starting point in position and time relationship daily record.In one embodiment, can determine time in daily record based on the time on controller system 14 and the difference between starting point.Trailing edge by search pulse in daily record and the timestamp that uses this some place are as the time starting point, and data are afterwards processed and will be produced identical result to the daily record of wireless device 12.In one embodiment, output pulses will be as the starting point of recording start, and this output pulses is arranged in log packet.
Wireless device 12 receives and processing signals 18, thereby generates the measuring-signal characteristic 38 corresponding with reference signal characteristics 34.In other words, measuring-signal characteristic 38 is reception values of reference signal characteristics 34, and is measured by the receiver associated components that is positioned on wireless device 12.In addition, wireless device 12 is from signal 18 receiving isochronous datas 36, thereby is associated with the ability of the corresponding selected position 22 that this measurement occurs for system 10 provides the most separately measuring-signal characteristic 38.In addition, wireless device 12 comprises radiance test module 40, the analysis that it monitors the measurement result of received signal and guides this signal data.In addition, carry out radiance test module 40, recording measuring-signal characteristic 38 and synchrodata 36, thereby form the record of test condition and the test result of each selected position 22.Then, system 10 sequence remaining a plurality of precalculated positions, until as given predetermined radiance test 24 determined, receive signal in all positions.
In case recorded all detecting informations, can determine radiance characteristic 42 at controller system 14 places.In this case, the daily record of measuring-signal characteristic 38 can be sent to the test manager module 44 that is positioned at controller system 14 from wireless device 12, wherein this daily record comprises synchrodata 36.Another daily record of test manager module 44 maintenance position information and corresponding temporal information, wherein test manager module 44 with this daily record to relevant from the daily record of wireless device 12, to generate record or the daily record of the positional information of synchronizeing with the measuring-signal characteristic 38 of each position of being indicated by predetermined radiance test 24.In this case, test manager module 44 is initiated the analysis of this synchronization log, to determine radiance characteristic 42.
In one embodiment, after generating daily record, can via with the cable that appends to wireless device 12 with the Log Shipping of measuring-signal characteristic 38 to controller system 14.In another embodiment, wireless device 12 can comprise for Log Sender being returned the transmitter of controller system 14.Wireless device 12 be forward link only arranged equipment (namely, wireless device 12 does not comprise can send it back signal the transmitter of radio-signal system 32 in reverse link) system in, wireless device 12 can comprise the transceiver for communication system, and wherein this communication system is different from the communication system of measuring.For example, wireless device 12 can comprise bluetooth
Figure G2007800329017D00061
Transceiver, it can be used for sending daily record.Can use the transceiver of other type.Use the transceiver of this replacement, can be in real time to wireless device 12 transmissions with from wireless device 12 receive datas.For example, can in measuring-signal characteristic 38, they be sent to controller system 14 from wireless device 12.The use of transceiver can interference signal characteristic 38 measurement.In addition, can be between wireless device 12 and controller system 14 transmitting control data.For example, can come instruction wireless device 12 beginning logs via the order that sends with the transceiver of replacing by controller system 14.
In another embodiment, can analyze with radiance test module 40 the measuring-signal characteristic 38 of all records, and determine the time started with synchrodata 36, in order to generate the radiance characteristic 42 of wireless device 12.In one embodiment, for example, radiance characteristic 42 can comprise that radiosusceptibility measures, and it is at the power gain at wireless device 12 antenna places and/or the function of voltage gain, and can measure it for single or multiple antennas.Embodiment for the wireless device 12 with a plurality of antennas, radiance characteristic 38 can comprise complex voltage (complexvoltage) receiving gain, it is used for predicting the correlation between a plurality of receive chain/antennas, thereby the indication of the diversity gain that is provided by given antenna setting is provided.
In another embodiment, for example, in the situation that synchrodata 36 comprises temporal information, 14 places can determine radiance characteristic 42 at controller system.In this case, the daily record of measuring-signal characteristic 38 and corresponding synchrodata 36 can be sent to the test manager module 44 that is positioned at controller system 14 from wireless device 12.Test manager module 44 is safeguarded another daily record of corresponding temporal information and positional information, wherein test manager module 44 with this daily record to relevant from the daily record of wireless device 12, to generate record or the daily record of the positional information of synchronizeing with the measuring-signal characteristic 38 of each position of being indicated by predetermined radiance test 24.In this case, the analysis that test manager module 44 is initiated this synchronization log is to determine radiance characteristic 42.
In other embodiments, for example, predetermined radiance test 24 can comprise following test, and it comprises the radio wave signal that comes from wireless device 46 that sends to radio-signal system 32.This test is the performance test of the emission chain/antenna of wireless device 12.In the embodiment of the base station of radio-signal system 32 analog cellular telephone networks, the radio wave signal 46 that comes from wireless device can be regarded as reverse channel signals.Signal 46 comprises reference signal characteristics 48, and it can be with acting on the following radix (baseline) that calculates, and radio-signal system 32 receives and processing signals 46, thereby generates the corresponding measuring-signal characteristic 50 that receives as system 32.In this embodiment, the test manager module 44 in implementation controller system 14 is so that the relevant position information that records measuring-signal characteristic 50 and find in the component 26 of location.Subsequently, system 10 sequence remaining a plurality of precalculated positions are until receive signal 46 in given predetermined radiance test 24 determined all positions.In case recorded all detecting informations, test manager module 44 analyze institute to some extent record measuring-signal characteristic 50 and come the relevant position information (it also can think synchronizing information 36) of self-align component 26, and the radiance characteristic 42 of generation wireless device 12.In this case, for example, radiance characteristic 42 can comprise the measurement of the transmission performance of wireless device 12, such as the transmitting power gain.In addition, if with each test related a plurality of precalculated positions in exist overlappingly, wireless device 12 can be arranged to receive simultaneously signal 18 and transmitted signal 46, thus the shortening testing time.
Therefore, system 10 comprises valuably directly record the receiver data on wireless device 12, thereby avoids the aerial lug of the true receiver coherent radiation performance distortion that makes equipment and the demand of cable.In addition, system 10 provides measuring-signal characteristic 38 and the positional information corresponding with each selected location 22 or the wireless synchronization of physical coordinates valuably, thereby avoids the aerial lug that is connected to external sync and subsequent processing device and the demand of cable.Carry out when in addition, the daily record that provides of the wireless device 12 of system 10 and synchronizing capacity allow a plurality of radiances test.Therefore, system 10 is provided for effective setting of the radiance of definite wireless device 12.
In a specific embodiment, for example, system described herein, apparatus and method help the radiation test of mobile phone.In this embodiment, can derive some radiance characteristics 42 by the measurement data that gathers in single test.Particularly, the radiance characteristic 42 that can determine is: total radiant power (" TRP ") characteristic, total omnidirectional sensitivity (" TIS ") characteristic, peak value equivalent isotropically radiated power (" EIRP ") characteristic, peak value receiver sensitivity characteristic, peak gain characteristic, average gain characteristic and the directional diagram correlation of supporting the phone of diversity.Usually, described embodiment carries out with three channel frequencys eat dishes without rice or wine (OTA), multiple connection receipts and emission maximum EIRP pattern measurement, and does not need to be connected to the test cable of equipment under test.By the predetermined radiation test of wireless execution, can make the exterior antenna test cable of radiation pattern distortion by elimination, described embodiment has improved measuring accuracy.In addition, because only need a phone for all tests, so described embodiment does not need special-purpose test fixture; On the contrary, prior art need to be used for the independent telephone permanent plant of test antenna gain/directional diagram and for the second radio telephone of peak E IRP and receiving sensitivity radiation test.In addition, this specific embodiment provides the accelerated test method of more specifically describing as following, and it is more faster than current TRP and TIS method of testing.For example, based on the experimental result of using native system, than in the duration of 3-5 hour of being about of the existing TIS test at a frequency place only, for low, in and high frequency, the total duration of TRP and TIS test is about 1.75 hours.
In this specific embodiment, for example, carry out in the far field anechoic chamber of calibration and measure.Test application is loaded into equipment under test (for example, wireless device 12), and other special-purpose control and the poster processing soft are loaded in the master computer (for example, controller system 14) of controlling this indoor equipment.Subdistrict position simulator or telephone booth are connected to indoor horn antenna, call out thereby can carry out OTA to the test telephone of installing on the rotating basis of the remote port of chamber.
For receiving mode test, the order equipment under test is recorded to user-defined packet in memory on equipment under test.When by the electromagnetic plane wave from the emission of telephone booth equipment, equipment under test being described, defined packet, such as " finger-like channel estimating " daily record grouping, comprise by the multiple pilot signal of the antenna reception of equipment under test (for example, homophase with quadrature mutually).In one embodiment, can send order to equipment under test by eating dishes without rice or wine from telephone booth and come the trigger recording daily record.By this log event is synchronizeed with the motion of pedestal and equipment under test, take measurement of an angle at each by the visual field that covers a certain scope and obtain multiple homophase and quadrature Phase Receiver directional diagram data.In addition, utilize the indoor loudspeaker that are orientated vertical and horizontal polarization directions to test, thereby obtain vertical and horizontal receiving pattern (pattern).In addition, for the equipment of supporting diversity, obtain the multiple receiving pattern of secondary antenna by recording in a similar fashion identical grouped data.
For the sending mode test, measure the radiant power of launching at given direction of measurement equipment under test with power meter, telephony transmitter is in maximum power simultaneously.Such as via the OTA signal from telephone booth equipment, order equipment under test to carry out radiation with its maximum transmission power.The power of launching takes measurement of an angle at each and is gathered by indoor loudspeaker, and is measured by power meter.In addition, determine indoor path loss, and represented by reference signal, thereby can determine the EIRP of phone.Rotate to each test angle that covers certain scope along with equipment under test, store in real time measured data.In addition, test for the indoor loudspeaker on vertical and horizontal polarization directions, thereby obtain vertical and horizontal polarization EIRP directional diagram.
Can carry out all measurement one transmission EIRP and main antenna and secondary connection of antenna recovery (complex field) in each order that takes measurement of an angle measures.Therefore, can gather all receptions and send data by moving single test.
The below discusses other details relevant to this specific embodiment.
With reference to Fig. 2, wireless device 12 can comprise the computerized wireless device of any type, such as cell phone, personal digital assistant, two-way text pager and portable computer.Wireless device can be long-range auxiliary device, does not perhaps have terminal temperature difference and only transmits the miscellaneous equipment of data by wireless network.The example of long-range auxiliary device comprises distance sensor, diagnostic tool, data link etc.Therefore, the function of here carrying out on described wireless device 12 can be carried out on the wireless device of arbitrary form or computer module, including, but not limited to, radio modem, PSMCIA card, wireless access terminal, radio individual computer, radio telephone or its combination in any or sub-portfolio.
In addition, the wireless device 12 output mechanism 54 that has for the input mechanism 52 that generates input to wireless device and be used for generating the information that the user by wireless device uses.For example, input mechanism 52 can comprise following mechanism, such as, button or keyboard, mouse, touch-screen display, sound identification module etc.Can comprise for arranging, change parameter and operation radiation test or transmit the menu option of the information of record outside equipment to the input of wireless device.In addition, for example, output mechanism 54 can comprise display, audio tweeter, tactile feedback mechanism etc.The output information that generates can comprise for carrying out test and transmitting test result, check the above-mentioned menu of test result etc.
In addition, wireless device 12 has computer platform 56, and it can send data by wireless network, and can receive and executive software application program and show the data that send from another computer equipment that is connected to wireless network.Computer platform 56 comprises data storage device 58, it can comprise volatibility and nonvolatile memory, such as read-only memory (" ROM ") and/or random asccess memory (" RAM "), Erasable Programmable Read Only Memory EPROM (" EPROM "), Electrically Erasable Read Only Memory (" EEPROM "), flash memory cards or to the general any memory of computer platform.In addition, data storage device 58 can comprise one or more secondarys or tertiary storage equipment, such as magnetic medium, light medium, tape, perhaps floppy disk or hard disk.
In addition, computer platform 56 also comprises processing engine 60, and it can be application-specific integrated circuit (ASIC) (" ASIC ") or other chipset, processor, logical circuit or other data processing equipment.Processing engine 60 or other processor (such as ASIC) can be carried out API (" API ") layer 62, and it carries out interface with any intrinsic program (such as radiance test module 40) in the data storage device 58 of wireless device 12 and is connected.API 62 is runtime environments of carrying out on wireless device separately.A kind of this runtime environment is the BREW by the Qualcomm company exploitation in Santiago of California
Figure G2007800329017D00101
(BREW ) software.Can adopt other (for example) to be used for controlling the runtime environment of the execution of application program on wireless computer device.
Processing engine 60 comprises that specific implementation is the various processing subsystems 64 of hardware, firmware, software and combination thereof, and it supports the function of wireless device 12 and the operability of the wireless device on wireless network.For example, processing subsystem 64 allows to initiate and keeps and the communicating by letter and exchanges data of other network equipment.In one embodiment, such as in cell phone, communication process engine 60 can comprise following processing subsystem 64 one or a combination set of: such as sound, nonvolatile memory, file system, transmission, reception, searcher, layer 1, layer 2, layer 3, master control, remote process, handheld device, power management, diagnosis, digital signal processor, speech coder, message transmission, call manager, bluetooth
Figure G2007800329017D00103
System, bluetooth LPOS, location positioning, engine of positioning, user interface, sleep, data, services, fail safe, authentication, universal subscriber identity module/Subscriber Identity Module (" USIM/SIM "), voice service, figure, USB (" USB "), such as the multimedia of moving picture expert group (" MPEG "), GPRS (" GPRS ") etc.For the disclosed embodiments, the processing subsystem 64 of processing engine 60 can comprise with the application program of carrying out on computer platform 56 and carries out mutual any subsystem component.For example, processing subsystem 64 can comprise any subsystem component that represents that radiance test module 40 is read and write from API 62 receive datas.In addition, can obtain to gather also all or part receiver related data and/or the transmitter related data of record subsequently by radiance test module 40 from these subsystems 64.
Computer platform 56 can also comprise that specific implementation is the communication module 66 of hardware, firmware, software and combination thereof, and it supports between each assembly of wireless device 12 and the communication between wireless device 12 and wireless network.In one embodiment, for example, communication module 66 comprise for by antenna system 72 wireless transmissions such as the transmitter module 68 of the information of radio wave signal 48, and be used for by the receiver module 70 of antenna system 72 wireless receivings such as the information of radio wave signal 18.As mentioned above, antenna system 72 can comprise individual antenna, and such as unipole antenna, dipole antenna, helical antenna, flat plane antenna etc., or its combination in any is to form a plurality of antennas.For example, this multiaerial system can comprise multiple-input and multiple-output (" MIMO ") communication system, and it uses a plurality of (N T) transmitting antenna and a plurality of (N R) reception antenna is used for transfer of data.Alternatively, for example, this multiaerial system can comprise the single output of many inputs (" MISO ") communication system, and it adopts a plurality of (N T) transmitting antenna and single receive antenna be used for transfer of data.In any case, the receiver module 70 that combines antenna system 72 can be thought the receive chain of wireless device 12.Similarly, transmitter module 68 and antenna system 72 can be thought the emission chain of wireless device.Except communication module 66, can there be other communication module in computer platform 56.For example, can comprise communication module 67, to use such as bluetooth
Figure G2007800329017D00111
Or the wireless communication protocol of IEEE 802.11 provides other communication capacity of wireless device 12.These communication capacities can be only to send, receive only or not only send but also receive.
In addition, as mentioned above, computer platform 13 also comprises radiance test module 40, with the activity relevant to radiation test on management wireless device 12.Radiance test module 40 can comprise any hardware, software, firmware and/or other executable instruction set, can be used for managing the relevant collection such as any information of receiver data and/or transmitter data of radiance characteristic 42 to wireless device 12.Can start at any time radiance test module 40, in order to record, store and make measuring-signal characteristic 38, synchrodata 36, any data relevant to transmitter and/or receiver, and/or any information relevant to predetermined radiance test 24 can obtain.
In one embodiment, for example, radiance test module 40 comprises actuating logic 74, and it provides the information relevant to the radiance test, the ability of storing and access being provided or forwarding.In addition, in certain embodiments, actuating logic 74 can start the ability of wireless device 12, in order to generate radiance characteristic 42 based on the parameter of given performance test 24.
In addition, radiance test module 40 comprises testing of equipment configuration 76, daily record parameter 78 and/or test variable 80 that its regulation is corresponding with the predetermined radiance test 24 that is moved by controller system 14.For example, the type of daily record parameter 78 provisioning informations is in order to gather and be recorded as receiver data 82 and/or the transmitter data 84 of testing for given radiance.In one embodiment, for example, daily record parameter 78 regulation is from the obtainable measured or reference receiver data 82 of one or more processing subsystems 64 and/or measured or reference transmitter data 84.In wireless telephonic situation, for example, daily record parameter 78 can comprise from the daily record data grouping of processing engine 60 and/or processing subsystem 64 acquisitions.The example of the information that comprises in the grouping of this daily record data including, but not limited to: from the power of given receive chain/antenna reception, from the power of given emission chain/antenna transmission, the in-phase pilot voltage related with given receive chain and quadrature phase pilot tone voltage, finger-like lock-out state, received signal relative delay (for example, time difference between the first and second events of reception same signal is such as when receiving reflected signal) etc.Particularly, in an embodiment of cdma system, this daily record data grouping comprises " search TNG finger-like state " grouping, " RF " subgroup, " finger-like information " subgroup and " filtering frequency pilot sign " subgroup.In another embodiment of cdma system, the example log packet is " WCDMA finger-like information-finger-like of TA/pilot channel parameter " grouping or " diversity antenna radiation regimes " grouping.In the situation that forward link device is only arranged, the example log packet is " MFLO RSSI value dynamic parameter " grouping.In addition, or replacedly, daily record parameter 78 can be stipulated that receive or for addressable other information relevant to radiance of wireless device 12 by wireless device 12.For example, in one embodiment, daily record parameter 78 can comprise the information relevant to test configurations and/or the information in the packet of the signal that is received by wireless device 12, such as reference signal characteristics 34 and/or from the synchrodata 36 of signal 18.Yet, should be appreciated that, can stipulate many other daily record parameters 78 based on the attribute of given radiance test.
In addition, for example, test variable 80 regulation and collection receiver data 82 and/or transmitter data 84 and/or the value relevant to institute's image data execution analysis.In one embodiment, for example, the type of test variable 80 comprises sampling rate, every sampled data grouping number, be used for enabling or the code of Disable Logs record etc.Yet, should be appreciated that based on the attribute of given radiance test and can stipulate many other test variable 80.
In addition, actuating logic 74 can be carried out in order to impel the user of wireless device 12 to select given testing of equipment configuration 74 and/or from relevant daily record parameter 78 and/or the test variable 80 of a plurality of available test configurations, daily record parameter and/or test variable.For example, with reference to Fig. 2 and Fig. 3, radiance test module 40 can comprise user interface or view 75, such as can be via output mechanism 54 a plurality of navigation menus of presenting to the user.View 75 can comprise header information 77 and footer information 79, such as menu, program and/or the version in order to identify appointment.In addition, view 75 can provide executable command 81, so that the various functions that support is associated with given test.For example, order 81 can comprise as issuing orders: beginning is used to indicate module and begins to carry out log recording based on configuration; Stop, being used to indicate module and stopping log recording; Wipe all daily records, be used for wiping any daily record of storing at memory; End, be used to indicate module and end log recording, yet, if can comprising for the memory that is using, this module reaches the logic that predetermined threshold is ended log recording automatically; Continue, be used for restarting log recording after abort commands; Discharge, in order to discharge the internal storage buffering, for example, be used for debugging operations; Write memory is used for recorded data is written to second memory from first memory; The simulation shutdown is used for making the equipment simulating normal shutdown in order to remove the function that will call and carry out, and this helps debugging very much; Request of loading is used for request any data of storing and/or daily record is loaded into another computer equipment, such as controller system 14; And sound/vibration, be used for arranging the trigger of sound and/or vibration alarm feedback, for example, be used for receiving order from another equipment, and/or when initiating data call, and/or in request or complete and use when loading and use when being used at debugging operations.In addition, view 75 can comprise variable field 83, such as the numerical value that is used for input test variable 80.Therefore, the user can configure and move by the view 75 on wireless device 12 predetermined radiance test.
Replacedly, can testing of equipment configuration 76 be sent to wireless device 12 via wired or wireless connection, perhaps can comprise testing of equipment configuration 76 at computer platform 56 during fabrication.
In addition, radiance test module 40 comprises for the testing of equipment daily record 86 based on the testing of equipment configuration 76 storages information relevant to radiance.Testing of equipment daily record 86 is included in the record of storage in data storage device 58, and it can comprise test condition and/or the test result relevant to one or more radiance tests of using wireless device 12 to carry out.As mentioned above, for example, testing of equipment daily record 86 can comprise wireless device (" WD ") receiver data 82 and/or WD transmitter data 84.In one embodiment, receiver data 82 comprise one or more measured characteristics of signals 38, and it is to gather from processing subsystem 64 after the signal 18 at each 22 place, selected location is processed.In addition, testing of equipment daily record 86 can comprise the out of Memory corresponding with the data that generated at given radiance test period by wireless device.For example, testing of equipment daily record 86 can be included in the information that comprises in received signal, such as, from predetermined synchrodata 36 and/or the reference signal characteristics 34 of signal 18.In one embodiment, reference signal data 34 can be that regulation is by the data of the reset condition of the signal 18 of wireless device 12 receptions, such as performance number, range value, phase value, frequency values, signal type/agreement etc.In one embodiment, predetermined synchrodata 36 can be the temporal information corresponding with the time of wireless device in selected location 22, or is used for the positional information of the coordinate of regulation selected location 22.In addition, testing of equipment daily record 86 can comprise all or arbitrary portion of the testing of equipment relevant to institute's collection receiver data 82 and/or transmitter data 84 configuration 76, in order to provide, the convenient of test condition that is associated with given institute's image data set is quoted.
In addition, in certain embodiments, radiance test module 40 can comprise device analysis device module 88, is used for definite for given predetermined radiance test 24, the radiance characteristic 42 that is associated with wireless device 12.Device analysis device module 88 can comprise any hardware, software, firmware and/or other executable instruction set, is used for analyzing any information that gathers in testing of equipment daily record 86, and generates radiance characteristic 42.In one embodiment, for example, device analysis device module 88 can comprise analyzes agreement 90, and it can comprise and process and/or analyze information in daily record 86 with the relevant function of the method that generates radiance characteristic 42, algorithm etc.For example, analyze the realization that agreement 90 can comprise performance test, integrated protocol, simulation model, forecast model, statistical analysis etc., such as being used for utilizing the information that records to determine required measuring, such as the partial solution of test result or the final solution of test, namely the radiance characteristic 42.Therefore, radiance characteristic 42 can be a kind of measuring, such as but be not limited to: the gain inequality between power and/or voltage gain, sensitivity measure result, multiple directional diagram correlation, Fading correlation, two receive chain/antennas etc.In addition, radiance test module 40 can be stored in the radiance characteristic 42 that generates in testing of equipment daily record 86, perhaps be stored in some other records with one or more part relations of daily record 86, transmit, check and/or analyze on wireless device 12 and/or another computerized equipment such as controller system 14 being used for.In addition, analyze agreement 90 and can be included in testing of equipment configuration 76, and to determine the radiance test result the term of execution visited by device analysis device module 88.
Any function of the parts of the wireless device 12 shown in Fig. 1 can utilize another equipment to realize.In addition, some parts can be positioned on independent equipment.For example, in the situation that wireless device 12 is that the adapter of wireless communication ability is provided for the computing equipment such as laptop computer, part or all of testing of equipment daily record 86 can be stored in laptop computer.Similarly, the some or all of parts of computing platform 56 can be positioned at laptop computer from it.
With reference to Fig. 1 and Fig. 4-6, controller system 14 can comprise at least one in hardware, software, firmware, work station, server, personal computer, microcomputer, mainframe computer or any special use or the universal computing device of any type.In addition, controller system 14 can be positioned on wireless device 12 fully.In addition, controller system 14 can comprise that co-operation is to carry out a plurality of separate servers or the computer equipment of institute's representation function here.Controller system 14 (or a plurality of module) can send to wireless device 12 through wireless network with ageng or application program (such as self-radiation performance test module 40), so that wireless device 12 returns to the information from its intrinsic application program and subsystem.For example, wireless device 12 can be sent in the form of testing of equipment daily record 86 result that predetermined radiance is tested actuating equipment test configurations 76 during 24, wherein controller system 14 can be subsequently with this result and scheduled time information or location information synchronizing, to generate radiance characteristic 42.
In addition, controller system 14 has for the input mechanism 92 of generation system input and for the output mechanism 94 of generation by the information of user's use of controller system.For example, input mechanism 92 can comprise following mechanism: such as, button or keyboard, mouse, touch-screen display, sound identification module etc.The input of controller system 14 can comprise for the menu option that arranges, changes parameter and operation radiation test or will synchronize with the information on being recorded in controller system from the log information of wireless device.In addition, for example, output mechanism 94 can comprise display, audio tweeter, tactile feedback mechanism etc.The output information that generates can comprise for carrying out test and synchronous and/or calculate test result, check the above-mentioned menu of test result etc.
In addition, controller system 14 has computer platform 96, and it can transmit and receive data, and can receive with the executive software application program and carry out the data demonstration.Computer platform 96 comprises memory mechanism 98, it can comprise volatibility and nonvolatile memory, such as read-only memory (" ROM ") and/or random access storage device (" RAM "), Erasable Programmable Read Only Memory EPROM (" EPROM "), Electrically Erasable Read Only Memory (" EEPROM "), flash memory cards or to the general any memory of computer platform.In addition, memory mechanism 98 can comprise one or more secondarys or tertiary storage equipment, such as magnetic medium, light medium, tape, perhaps floppy disk or hard disk.
In addition, computer platform 96 also comprises CPU 100, and it can be one or its combination in application-specific integrated circuit (ASIC) (" ASIC ") or other chipset, logical circuit, FPGA (Field Programmable Gate Array) machine or any other data processing equipment.More specifically describe as following, CPU 100 explain and executive software in the instruction and data that comprises, all or part of such as radiation test manager module 44.
In addition, computer platform 96 comprises that also specific implementation is the communication module 102 of hardware, firmware, software and combination thereof, between the various parts of its support controller system 14 and the communication between controller system 14 and the miscellaneous equipment such as navigation system 28, radio-signal system 32 and wireless device 12.For example, communication module 102 comprises input port and output port, such as being respectively used to receiving equipment test log 86 and transmitting control signal 16.
As mentioned above, computer platform 96 also comprises radiation test manager module 44, be used for to carry out and Management Controller system 14 on all radiance test activities.Radiation test manager module 44 can specific implementation be hardware, firmware, software and combination thereof.In one embodiment, radiation test manager module 44 comprises management logic 104, and it provides the ability of the predetermined radiance test 24 of operation.In addition, in certain embodiments, management logic 104 can provide and start the analysis that gathers daily record to generate the ability of radiance characteristic 24.
In one embodiment, radiation test manager module 44 comprises storehouse 106, and it has can be by a plurality of predetermined radiance test 108 of controller system 14 operations.For example, a plurality of predetermined radiance tests 108 can comprise different test protocols, it can change according to standards body, wireless carrier, radio equipment manufacturer, wireless device processes device, antenna system, wireless device model, and also can be designed for definite different radiance characteristic.In any situation, management logic 104 can be for the user provides interface, so that selective radiation performance test 24 from a plurality of predetermined radiance tests 108.Replacedly, radiance can be tested 24 and be loaded into separately in computer platform 96, and be carried out by radiation test manager module 44.
With reference to Fig. 5, in one embodiment, predetermined radiance test 24 comprises the set of a plurality of positions 110, respectively signal 18 and 46 is sent to wireless device 12 in these positions or sends from wireless device 12.A plurality of positions 110 are corresponding to specific test protocol.For example, as needed in some radiation tests, a plurality of positions 110 can comprise the point on sphere.Yet, should be appreciated that a plurality of positions 110 can comprise the relevant point in shape to the line of any type or any type.As previously mentioned, one or more reference signal characteristicses 34 and 48 can be associated with each signal 18 and 46 respectively.These reference signal characteristicses 34 and 48 can be including, but not limited to signal power, signal amplitude, signal phase, signal frequency, signal type/agreement and any other controlled signal parameter that can arrange for the radiance of determining wireless device 12.
In addition, in certain embodiments, each signal 18 and 46 can also comprise packet, it can be defined as predetermined (" the OTA ") data 112 of eating dishes without rice or wine.For example, as mentioned above, predetermined OTA data 112 can comprise the predetermined synchrodata 36 of stipulated time information 114 and/or positional information 116.Temporal information 114 comprises the data of time that are in a position (such as selected location 22) of a plurality of positions 110 for regulation wireless device 12.In one embodiment, for example, temporal information 114 can be obtained from time module 118, wherein time module 118 can be the local module related with CPU 100 or can be controller system 14 for synchrodata addressable far module.Positional information 116 comprises the data of the space coordinates of regulation selected location 22.As previously mentioned, utilize predetermined synchrodata 36 with measured value, such as (by the wireless device 12 received) characteristics of signals 38 measured in each selected location 22 or measured (being received by radio-signal system 32) characteristics of signals 50, be associated with all positions in a plurality of positions 110, in order to generate one group of measurement data that is used for analysis.
In addition, predetermined OTA data 112 can comprise additional OTA data 120, and it can comprise the packet of predesignating, and these packets comprise the message in given wireless protocols.These message can comprise a plurality of subgroups of also having stipulated other data.For example, in the code division multiple access agreement, additional OTA data 120 can comprise beep-page message, acknowledgment message, registration message, system parameters message and any other Overhead Message.In addition, additional OTA data 120 can also comprise subgroup information, such as the latitude and longitude coordinate of service option, system banner (" SID ") code, network identity (" NID ") code, base station, system configuration/parameter information, test configurations/parameter information etc.In addition, additional OTA data 120 can comprise the code for the function of controlling wireless device 12, such as code and any miscellaneous equipment of the time that is used for opening and closing log recording, indicating positions variation, indication transmitted signal are controlled parameter.For example, can open and close with different SID code values the record of daily record parameter 78.In addition, in one embodiment, predetermined synchrodata 36 can be embedded in by in the unused portion of adding OTA data 120 specified standard Overhead Messages.
In addition, predetermined radiance test 24 can also comprise as top specifically described testing of equipment configuration 76.Testing of equipment configuration 76 can comprise the relevant information of computerized equipment, and wherein this computerized equipment has suitable test module to carry out all or part of predetermined radiance test 24.For example, testing of equipment configuration 76 can allow the predetermined radiance test 24 of one or two execution in wireless device 12 and controller system 14.In addition, testing of equipment configuration 76 can comprise the summary info that illustrates test parameter.In one embodiment, for example, testing of equipment can be configured 76 parts as additional OTA data 120 and send to wireless device 12.
In addition, radiance test 24 can comprise for carrying out test or being encapsulated in the daily record parameter 78 of testing of equipment configuration 76 and the set of test variable 80.In addition, based on given test parameter, radiance test 24 can comprise for the predetermined control command set 16 of carrying out test.
In addition, as top specifically described, predetermined radiance test 24 can also comprise extraly analyzes agreement 90, for the treatment of and/or the information in daily record 86 analyzed to generate radiance characteristic 42.For example, in the embodiment of wireless device 12 execution analyses, can send to wireless device 12 with analyzing the part of agreement 90 as additional OTA data 120.Replacedly, controller system 14 can utilize in this locality and analyze agreement 90.
Return with reference to Fig. 4, radiation test manager module 44 is carried out predetermined radiances test 24, to generate control signal 16 based on the various parameters relevant to test 24 in each position.As previously mentioned, control signal 16 comprises location component 26, is used for coming mobile wireless device 12 through each position of a plurality of positions 110 via navigation system 28.In addition, as previously mentioned, control signal comprises signaling component 30, is used for coming control signal 18 transmission of 12 from radio-signal system 32 to wireless device based on reference signal characteristics 34.
In an embodiment, such as when wireless device 12 is sent to controller system 14 with testing of equipment daily record 86, perhaps when test 24 comprised measurement result from the signal transmission 46 of wireless device 12, controller system 14 was determined the radiance characteristic 42 of wireless devices 12.In either case, with reference to Fig. 6, radiation test manager module 44 also comprises controls test log 122, is used for keeping the record of test condition and/or test result.In one embodiment, for example, control test log 122 and comprise be used to the testing of equipment configuration 76 of recording test parameter, as mentioned above, it can comprise all or arbitrary portion of the data relevant to predetermined radiation test 24.
In addition, control the predetermined value that test log 122 can comprise test parameter, the measured value of this predetermined value and test parameter can be compared subsequently, in order to determine the radiance of wireless device 12.For example, control test log 122 and can comprise the record of controlling receiver data 126, it comprises and the relevant information of the signal that is received from wireless device 12 by radio-signal system 32 (such as, signal 46).For example, control receiver data 126 and can comprise measuring-signal characteristic 50, predetermined synchrodata 36, reference signal characteristics 48 and/or any out of Memory relevant to the signal 46 that receives from wireless device 12.Similarly, control test log 122 and can comprise the record that controls transmitter data 128, it comprises and the relevant information of the signal that is sent to wireless device 12 by radio-signal system 32 (such as, signal 18).For example, controlling transmitter data 128 can comprise: reference signal characteristics 34, it has been stipulated about the information of the signal 18 that sends to wireless device 12, synchrodata 36, measured characteristics of signals 38 and/or any out of Memory relevant to the signal 18 that sends to wireless device 12.
In addition, in the above-described embodiments, radiation test manager module 44 can comprise performance analyser module 130, for the data execution analysis agreement 90 as above that comprises controlling test log 122 and/or testing of equipment daily record 86, in order to determine radiance characteristic 42.May with wireless device 12 on the similar or identical performance analyser module 130 of analyzer module 88 can comprise any hardware, software, firmware and/or other executable instruction set, be used for analyzing any information that gathers controlling test log 122 and/or testing of equipment daily record 86.
In addition, performance analyser module 130 can also comprise synchronous logic 132 extraly, but its place of execution is used for gathering control test log 122 and/or testing of equipment daily record 86, and record is made up, in order to signal, measurement result and position are carried out synchronously, thereby generate synchrodata daily record 134.Particularly, the synchrodata 36 between synchronous logic 132 matching unit test logs 86 and control test log 122 is in order to correspondingly mate the relative reference signal characteristics of measuring-signal characteristic.For example, in one embodiment, this coupling combined result of record is synchrodata daily record 134.In this case, 130 pairs of synchrodata daily records of performance analyser module, 134 execution analysis agreements 90 are in order to generate radiance characteristic 42.
Return with reference to Fig. 1, navigation system 28 can be wireless device 12 to be moved to any mechanism of selected location 22.In one embodiment, for example, navigation system 28 comprises positioner 136, the location component 26 of its reception control signal 16, and guiding localizer assembly 138 moves appended wireless device 12.For example, localizer assembly 138 can comprise a plurality of supporting constructions, such as support and pedestal, they can rotate and/or Linear-moving independently of one another, so that localizer assembly 138 can move to wireless device 12 any given plane and/or spherical position, perhaps along axis rotating and radio equipment 12 process assigned addresses.In one embodiment, for example, localizer assembly 138 can be with wireless device 12 along the longitudinal axis arbitrarily angled θ of rotation and arbitrarily angled along the transverse axis rotation
Figure G2007800329017D00191
Motion by each tangent plane (taper shape or great circle arc) is continuous, and during the DUT rotation, measurement result (for example, rssi measurement result) is carried out continuous sampling.Therefore, there be not wireless device 12 " stop and carrying out " in the precalculated position.Replace, localizer assembly 138 moves through each tangent plane with constant speed with wireless device 12.Although be not to carry out the measurement of wireless device 12 in the fixed position, can determine by the interpolation to sampled data in the RSSI value at particular measurement coordinate place.In one embodiment, the speed of localizer assembly 138 rotating and radio equipment 12 depends on required number of samples and obtains the required time span of each sampling.
In addition, can with the Height Adjustment of wireless device 12 to any elevation angle e of the longitudinal axis.Localizer assembly 138 can comprise rotation and/or linear electric machine, such as servomotor, in order to receive order and accurate location of wireless devices 12 from positioner 136.In addition, localizer assembly 138 can comprise the mechanism of installation 140, is used for wireless device 12 is detachably fixed to localizer assembly 138.For example, the mechanism of installing 140 can be corresponding hook-and-loop fastener system, belt, glue, the size flute profile shell that can hold wireless device etc.
In another embodiment, for example, the location component 26 of positioner 136 reception control signals 16 of navigation system 28, its sign selected location 22 also guides localizer assembly 138 that appended wireless device 12 is moved to selected location 22.In other was implemented, the position of selecting for selected location 22 was the fixed position, and measures with fixing coordinate.
Still with reference to Fig. 1, radio-signal system 32 can be to send and/or to receive from wireless device 12 to wireless device 12 any mechanism of radio wave signal.In one embodiment, for example, radio-signal system 32 comprises CS module 142, is used for generating and receive signal based on the signaling component 30 of control command 16.For example, comprise in cellular embodiment at wireless device 12, CS module 142 can be base station emulator, the function of base station transceiver in its analog wireless networks, the model that provides such as the Agilent company in Palo Alto city, California are 8960 radio communication tester.CS module 142 can comprise the sending and receiving parts, and it makes radio-signal system 32 come transmitted signal 18 and to receive signal 48 by antenna 144.In one embodiment, antenna 144 comprises direct box horn, and it can comprise locator 146, to adjust and the horizontal h of signal correction and/or vertically v polarization.In addition, although this may be optional, if localizer assembly 138 can be adjusted the vertical height of wireless device 12, locator 146 can be adjusted the vertical height of antenna 144.
In addition, as mentioned above, CS module 142 can comprise receiving-member, is used for measuring the predefined parameter of received signal 46.Replacedly, radio-signal system 32 can comprise for the accessory receiver parts 148 of measuring the parameter of paying close attention to, such as power meter.Under any circumstance, radio-signal system 32 is measured received signals 46, and with this information reporting to controller system 14.For example, radio-signal system 32 will be controlled receiver data 126 (such as measuring-signal characteristic 50) and report to controller system 14, controller system 14 with this information recording/in controlling test log 122 (Fig. 4 and 6).
Still with reference to Fig. 1, test cabinet 20 provides the environment of wireless device 12 with external wireless electric wave and noise isolation.In addition, test cabinet 20 provides the environment that reduces the interference that comes the self-reflection radio wave signal, so this test cabinet 20 can comprise anechoic chamber.For example, test cabinet 20 comprises a plurality of walls 150, and it is around wireless device 12.The inboard of wall 150 comprises electric wave absorbing materials 152, such as having for the foamed material that absorbs and disperse a plurality of taper bossy bodies of radio wave and noise.In addition, any parts in test cabinet 20 such as positioning component 138, can also comprise on one or more surfaces that ripple absorbing material 152 is to reduce radio-wave reflection.Therefore, it is isolated with the radio frequency (" RF ") of external environment condition that test cabinet 20 provides, and allow in the situation that not have to disturb (such as for or from the interference of commercial wireless network) same frequency channel execution radiation test to being used by the local wireless carrier wave.
With reference to Fig. 7, in one embodiment, a kind of method that is used for the radiance characteristic of definite this wireless device on wireless device that operates in comprises reception and loads radiance test module (square frame 160).For example, wireless device 12 can receive and load radiance test module 40 via wired or wireless connection.
In addition, the method can also comprise the test configurations (square frame 162) that reception is relevant to predetermined radiance test.For example, wireless device 12 can receiving equipment test configurations 76, and it is identified at the parameter 78 that radiance test period of carrying out appointment will record and the variable 80 that will utilize.
In addition, the method can also comprise the radiance test (square frame 164) of carrying out appointment based on the test configurations that receives.The execution of the radiance test of appointment can comprise a plurality of operations, such as receiving radio wave signal (square frame 166), sending radio wave signal (square frame 168) and/or record measured and/or reference signal characteristics and synchrodata (square frame 170) based on the test configurations by each position in a plurality of positions of predetermined radiance test regulation that receives.For example, when the receiving ability of testing radio equipment 12, radiance test module 40 records receiver data 82 based on testing of equipment configuration 76, such as measuring-signal characteristic 38.Similarly, radiance test module 40 can come transmitted signal 46 and record its relevant reference signal characteristics 48 based on the parameter of specifying radiance test 24.For the equipment that forward link is only arranged, because wireless device 12 does not comprise transmitter, thus the emissivities of impossible testing radio equipment 12, so square frame 168 is optional.
In the embodiment of remote analysis is provided (square frame 172), the method comprises the transmission log recording, so that they can be analyzed by another equipment (square frame 180).For example, radiance test module 40 can be sent to testing of equipment daily record 86 controller system 14 to be used for further analysis.As described here, the daily record point that the daily record on wireless device 12 and controller system 14 can send lock-out pulse by the controller system 14 of determining to occur in two daily records carries out synchronously.
In comprising the embodiment of local analytics (square frame 172), the method also comprises receiving and loading to specifying radiance tests relevant analysis agreement (square frame 174), wherein specifies the radiance test to comprise receiver sensitivity.For example, radiance test module 40 can receiving and analyzing agreement 90, with the log information that is applied to be recorded in testing of equipment daily record 86.In addition, this embodiment comprises measurement and/or reference signal characteristics and the synchrodata (square frame 176) that analysis is recorded, and based on analyzing protocol generation radiance characteristic (square frame 178).For example, radiance test module 40 execution analysis agreements 90 are with the predefined parameter of analytical equipment test log 86 interior records.This analysis causes and generates radiance characteristic 42.
With reference to Fig. 8, in another embodiment, a kind of operating in for the method on the device of the radiance characteristic of determining wireless device comprises that receiving and load radiance uses (square frame 182).For example, controller system 14 can receive and load the radiation test manager module 44 with one or more radiance tests.
In addition, the method comprises that carrying out predetermined radiance tests (square frame 184).For example, radiation test manager module 44 can be carried out predetermined radiance test 24.The execution of predetermined radiance test can comprise a plurality of operations, such as based on presumptive test, control signal being sent to other system unit (square frame 186).For example, each position in a plurality of positions 110 relevant to specified performance test 24, radiation test manager module 44 can generate the control signal 16 with location component 26, changes the position of wireless device 12 with the movement by navigation system 28.In comprising the embodiment that sends signal to wireless device 12, the operation that transmits control signal can also comprise to radio-signal system 32 transmission signaling component 3s 0, with the generation of enabling signal 18.In addition, for example, the operation of carrying out predetermined radiance test can also comprise recording scheduled reference signal and/or measuring-signal characteristic and synchrodata (square frame 188).For example, radiation test manager module 44 can be in controlling test log 122 record controls receiver data 126 and/or control transmitter data 128.
In comprising the embodiment of local analytics (square frame 190), the method also comprises the record (square frame 192) that receives measurement characteristics and synchrodata from wireless device.For example, radiation test manager module 44 is from wireless device 12 receiving equipment test logs 86.If comprise that the daily record that receives of measuring-signal characteristic synchronizes with locating information by (square frame 194), the method also comprises based on pre-setting analysis agreement and analyzes the daily record (square frame 196) that receives and generate radiance characteristic (square frame 198).For example, performance analyser module 130 can be come analytical equipment test log 86 with analyzing agreement 90, to determine radiance characteristic 42.In one embodiment, wireless device 12 can be determined the PER of equipment self and gather this data.The PER data are stored in testing of equipment daily record 86.A kind of example FLO grouping is " MFLO MLC PLP STATS POST PARAMS " daily record grouping, and it records the number of good physical layer grouping (PLP) and the number that PLP wipes.Replacedly, if the daily record that receives is not synchronous (square frame 194), the method comprises that institute is received log information synchronizes with local log information, to generate synchrodata daily record (square frame 200).For example, performance analyser module 130 can be carried out synchronous logic 132, in order to by mating the synchronizing information that comprises in each daily record, testing of equipment daily record 86 is made up with controlling test log 122, synchronizing information wherein is such as the output pulses that occurs in two daily records and send for the starting point of synchronism detection.In this case, in case generate synchrodata daily record 134, the method can continue to analyze synchronizing information (square frame 196) and generate radiance characteristic 42 (square frames 198) via pre-setting analysis agreement.
Replacedly, in comprising the embodiment of remote analysis (square frame 190), such as the analysis to wireless device 12, the method can comprise to another equipment transmission analysis agreement (square frame 202) relevant to being scheduled to radiation test.For example, if not yet comprise a part as testing of equipment configuration 76, radiation test manager module 44 can send to wireless device 12 with analyzing agreement 90, such as by signal 18.Alternatively, this embodiment of method can also comprise from another equipment receiver radiation performance characteristics (square frame 204).For example, if wireless device 12 comprises analyzer module 88, radiation test manager module 44 can be from these wireless device 12 receiver radiation performance characteristicses 42.Can make in all sorts of ways, comprise the transmitter that uses the wireless device 12 related with receiver, independent transmitter (for example, bluetooth Or 802.11) or cable, transmit this information.
Particularly, in foregoing limiting examples, can utilize described embodiment to carry out cell phone radiating antenna/receiver test, such as: (1) total omnidirectional sensitivity (TIS) test; (2) total radiant power (TRP) test; And (3) antenna pattern correlation (ρ) test.
All these three kinds of radiation tests need vertically and the spherical test of antenna gain of horizontal polarization.Although usually indirectly complete via receiver sensitivity, the measurement of antenna reception gain pattern is that the TIS test is intrinsic.The measurement of antenna transmission gain is depended in the TRP test.The complex voltage that antenna pattern dependence test or antenna ρ test need to be measured two or more antennas simultaneously receives (" RX ") gain, comprises amplitude and phase place.The physical process of measuring spherical gain is identical for all tests in fact: when phone carries out physics when rotation around spherical, and normally on a series of orthodrome tangent planes (elevation angle tangent plane), the loss between measurand transmitter and receiver.Difference between each test is characteristic and the position of transmitter and receiver.
In the situation that TIS test and antenna pattern dependence test, the transmitter cell site simulator of CS module 142 (normally such as) is connected to distance (range) directional antenna (such as horn antenna 144), and receiver is connected to tested antenna.In this case, receiver is receiver module 70, and tested antenna is the antenna system 72 of wireless device 12.For the TRP test, wireless device 12 is as transmitter, and receiver is the RF power meter 148 that is connected to apart from antenna 144.
In these tests, the receiver module 70 of wireless device 12 carries out necessity of the test (RX gain, antenna ρ) based on RX and measures.By using the receiver module 70 of wireless device 12, described embodiment provides many advantages, such as: save time, because needn't revise wireless device 12 for test; And potentially, more accurate result is because in the prior art to the modification of wireless device 12 and use in the prior art external equipment and cable can change the gain pattern of antenna.
In addition, radiance test module 40 provides via the API 62 with processing subsystem 64 interfaces and visits receiver data 82, estimates such as RX_AGC (power that receives) and from the pilot tone I/Q of rake finger-like antenna (finger).In addition, radiance test module 40 is recorded to receiver data 82 in the interior testing of equipment daily record 74 of data storage device 58.The method provides following advantage, namely can be in the situation that there is no connection cable testing radio equipment 12.At this moment, wireless device 12 is testing equipment and data log record device.More succinct test setting is provided like this, and its estimation is in the wireless device 12 under more representational state (there is no cable), and can save time.
In addition, the above-mentioned setting allows the test data that is necessary is recorded on a single place-wireless device 12.For example, utilize system 10, can be at each power measurement constantly to register control 136 inquiring position information.This positional information or some data (such as time) corresponding with this positional information can be sent to wireless device 12 during test (there is no cable), make it possible to being necessary test data is recorded on wireless device 12.This make wireless device 12 can with receiver parameters record position information synchronously, make it possible to gather at work power and position relationship record.Replacedly, controller system 14 can record position information and time corresponding with this positional information or some other variablees that can be synchronous with wireless device 12.Simultaneously, wireless device 12 records measured data parameters and time (or other synchrodata).In this alternative, wireless device 12 can be with Log Sender to controller system 14, and it can be synchronizeed positional information via time or other synchrodata with measured data parameters.For example, the pulse that sends when synchrodata 36 can be included in process and begins is used for providing predetermined starting point in the daily record of wireless device 12.In another embodiment, can via following mode with positional information or at least synchrodata 36 send to wireless device 12: open on active traffic channel, one or more in forward link overhead channel message do not use field in coded data socket (data socket), such as the SID in system parameters message, network identity (" NID ") or base station latitude and longitude; And can pass through such as bluetooth
Figure G2007800329017D00251
Or 802.11 frequency channels the transmission of data.
Influencing each other of antenna and electronic telephone unit considered in TIS test, comprises the disturbing effect of not expecting noise that comes from by the electronic telephone unit radiation that can be coupled to Anneta module.Particularly, for the TIS test, middle FLO receiver sensitivity is measured the service channel power that need to find the received signal quality to begin to reduce; Particularly, packet error rate (PER) becomes 0.5% point.Similarly, the cdma receiver sensitivity measure need to find the service channel power that the received signal quality begins to reduce; Particularly, frame error rate (FER) becomes 0.5% point.Yet, should be noted that according to given scenario and can specify certain other PER or FER threshold value.In addition, should be noted that and to utilize other threshold parameter.For example, utilize global system for mobile communications (" GSM ") technology, threshold parameter can be bit error rate (BER) (" BER ").For the situation of CDMA, the TIS test process of cellular communication and the Internet alliance (" CTIA ") regulation points out, at θ (elevation angle) and
Figure G2007800329017D00252
The carrying out radiosusceptibility every 30 ° and measure of (azimuth) axle.Equally, can utilize other precalculated position according to scene.Be not included in θ=0 ° and 180 ° of points of locating, prior art need to be carried out 60 independently sensitivity measures to each polarization, subsequently surface integral is carried out in these measurements, measures thereby produce TIS.This is the test very consuming time of carry out, because all need progressively iterative process in the sign of the sensitive point of each position, this is in the past by manually carrying out.
Yet described embodiment accelerates to carry out the speed of TIS test.Radiosusceptibility around sphere only changes because of the variation of antenna RX gain.Other factor of all in link is all constant.Therefore, if it is known to follow the RX gain mode of antenna, only need to carry out sensitivity measure at single datum mark (being preferably the maximum antenna gain point).Therefore, at sphere what its point of taking up an official post
Figure G2007800329017D00253
Radiosusceptibility Sens can be expressed as:
Sens(θ，φ)＝Sens(θ o，φ o)+[G RX(θ，φ)-G RX(θ o，φ o)] (1)
Wherein, Sens (θ, φ) is the radiosusceptibility of locating in spherical coordinate (θ, φ), represents G with dBm RX(θ, φ) is the RX antenna gain of locating in spherical coordinate (θ, φ), represent with dB, and (θ o, φ o) be the coordinate that reference sensitivity is measured, namely be preferably the sensitivity in the maximum gain position.
In the prior art, the method is unpractical, because as previously mentioned, will carry out the destructiveness change to equipment in the prior art and measure G RX(θ, φ).Yet described embodiment determines G with allowing non-destructive RX(θ, φ) measures because carry out received power by the receiver module 70 of wireless device 12.Therefore, in a specific embodiment, can utilize following accelerated method for each polarization (vertical and level):
(1) carry out radiance test module 40, to measure and to be recorded in the G of predetermined a plurality of positions RX(θ, φ), such as (θ, φ) increases progressively with 30 °, wherein (θ, φ) defined spherical shape (do not comprise θ=0 ° and 180 °) in this case;
(2) recognizing site (θ o, φ o), at this position G RXMaximum;
(3) at position (θ o, φ o) locate to carry out the test of single radiosusceptibility, namely monitoring that PER is (perhaps for being FER for the equipment of CDMA; Perhaps for being BER for the equipment of GSM) time oblique deascension to the transmitting power of wireless device until reach predetermined threshold PER, to determine Sens (θ o, φ o);
(4) formula 1 above the whole precalculated position collection of contrast as above-mentioned spherical position is used is to determine the Sens (θ, φ) in each precalculated position; And
(5) in shape calculating Sens (θ, φ) is carried out integration in the precalculated position, in order to determine that the TIS of wireless device measures.
In other words, TIS needs " radiosusceptibility directional diagram " EIS v(θ, φ) and EIS h(θ, φ), wherein EIS V or h(equivalent omnidirectional sensibility) is the radiation receiver sensitivity of locating at given take measurement of an angle (θ, φ) for given PER (perhaps BER or FER) threshold value.Yet, in test cabinet, because when equipment under test rotates to antenna directivity invalid (for example, received signal level is lower than the phone noise level), call out meeting call drop usually, be more difficult so directly measure these numerical value.For fear of this problem, then the higher received power level place's measurement receiving pattern being enough to avoid call drop carries out convergent-divergent by measured peak sensitivity value, to derive EIS v(θ, φ) and EIS h(θ, φ) directional diagram.For example, in one embodiment, path loss in calibration chamber, making has known power level on equipment under test, wherein this power level exceeds than the back noise of phone and is about or greater than 30dB (for example, be about in the call test position-70dBm is better numerical value for call type code).Yet, should be noted that according to the nominative testing scene and can utilize other dBm numerical value.Come to derive antenna gain directional diagram (G according to top measured directional diagram data by normalizing to RSSI value (being measured power) v(θ, φ), G h(θ, φ))), wherein the RSSI value be to receiver directly " injections " (usually via the RF test port on phone) reference power level (be in this case-70dBm) time by telephone report.This is that the antenna gain in the specified measurement angle is the incident power at 0dBi and the phone place value that phone will be reported during for-70dBm.Represent receiving antenna gain with the deviation of this value.
Then, with incidence angle and for the indoor loudspeaker polarization (vertically v or horizontal h) that draws peak antenna gain (θ, φ), measure peak of radiation receiver sensitivity Peak EIS (θ in anechoic chamber pk, φ pk).By obtaining the EIS directional diagram with peak E IS value normalization antenna gain directional diagram:
EIS V or h(θ, φ)=PeakEIS (θ pk, φ pk)-G V or h(θ, φ)
In case known EIS v(θ, φ) and EIS h(θ, φ) directional diagram obtains TIS by the space average of carrying out directional diagram on the sphere of test angle and measures:
Figure G2007800329017D00271
This technology allows fully on wireless device 12, carry out these calculating fully in control system 14 places or its certain combination.For example, when wireless device 12 receive such as the synchrodata 36 of positional information or such as the synchrodata 36 of temporal information 114 and from the synchrodata 36 of controller system 14 and positional information concern daily record the time, wireless device 12 can be determined independently.Wireless device 12 can be determined G RX(θ o, φ o) and send (θ to controller system 14 o, φ o), with the sensitivity test part that is used for redirecting navigation system 28 and starts agreement.Then, wireless device 12 can calculate required Sens (θ, φ), and carries out integration to determine that TIS measures, and wherein TIS measures and can store and/or send to controller system 14.
Replacedly, can interrupt the data acquisition at wireless device 12 places after step 1 and 2, be used for subsequent treatment to determine G to allow that testing of equipment daily record 86 is unloaded to (for example) from wireless device 12 RX(θ, φ) and G RX(θ o, φ o) controller system 14 in.For example, daily record 86 comprises the record of measured data and synchrodata relation.At this moment, controller system 14 can transmit control signal 16 in order to wireless device is positioned at the position (θ that tests for radiosusceptibility o, φ o) locate.Similarly, wireless device 12 can be in after maximum gain position recording sensitivity measurement result set or at definite Sens (θ o, φ o) afterwards, unloading equipment test log 86.Then, controller system 14 can and/or carry out integration across sphere at all location application formula 1, thereby determines that TIS measures.
In addition, because RX_AGC is active, so can utilize wireless device 12 execution in step 1 under idle pulley.Advantageously, this technology has been eliminated for keep the demand of service call at test period.However, should be noted that for step 3 wireless device 12 and can be in calling, because may be only for business data frame regulation FER.
In one embodiment, manually carry out above-mentioned sensitivity test---manually adjust emission power of forward link on the cell site simulator to reach the target P ER on wireless device 12.As mentioned above, described embodiment provides the automatic sensitivity test.For example, controller system 14 is set up with wireless device 12 and is called out, and oblique deascension forward link power progressively, preserves simultaneously the record of power and time relationship in controlling test log 122.Simultaneously, radiance test module 40 records PER and time relationship in testing of equipment daily record 86.Radiation test manager module 44 receiving equipment test logs 86 are also carried out the measurement result that synchronous logic 132 is associated with the institute in synchronous and each daily record 122 and 86 writing time, thereby generate the synchronization log 134 that comprises that PER and power relation record.Based on the record of this PER and power relation, performance analyser module 130 can be determined the point of 0.5%PER.
In another is replaced, if by forward link, forward emitting power is sent to wireless device 12, the data that are necessary can be recorded in wireless device 12 places.In this case, radiance test module 40 execution analysis device modules 80 are to determine the point of 0.5%PER.Therefore, daily record is incorporated into has advantageously eliminated on wireless device 12 for respectively from the demand of the offline synchronization of the daily record 122 of controller system 14 and wireless device 12 and 86.
For TRP, the TRP test is the performance test of the emission chain of wireless device 12.For this test, can configure 76 via testing of equipment and configure wireless device 12 in order to launch with full power.For example, in CDMA equipment, this often sends " complete arrange (all-up) " power control bit by indicating cell website simulator and realizes when keeping service call.Measure the power that receives from wireless device 12 by attaching to the power meter 148 of directed (loudspeaker) antenna 144 of antenna distance.The TRP test process of CTIA regulation indicates, for each polarization, at θ (elevation angle) and
Figure G2007800329017D00281
Carry out power measurement every 15 ° in (azimuth) axle.Be not included in θ=0 ° and 180 ° of points of locating, this technology all needs 264 independent data points for each polarization, subsequently these points is carried out integration on sphere, measures thereby produce TRP.Have in the position of measuring due to needs overlapping, so described embodiment allow to carry out simultaneously the TRP test with the TIS test, thereby save time significantly.
Replacedly, the other method for the wireless device 12 that configures the full power operation is by this wireless device being placed in factory test mode (FTM), the digital transmission gain to be set manually.In this configuration, can determine side by side to carry out the TRP test with top idle pulley RX gain for the TIS test description, thereby save the time potentially.
In other words, can determine that TRP measures by following formula:
Figure G2007800329017D00282
Wherein, EIRP v(θ, φ) is the equivalent isotropically radiated power of vertical polarization, and EIRP h(θ, φ) is the equivalent isotropically radiated power of horizontal polarization, and it can be according to transmitting gain pattern G V or h(θ, φ) determines:
G V or h(θ, φ)=EIRP V or h(θ, φ)/MaxPAOut
Wherein, MaxPAOut is the maximum power in each test frequency place's power amplifier output, that is, and and the maximum power of transmitter module 68 outputs.
It follows peak of radiation power P eakEIRP is the maximum of EIRP directional diagram:
PeakEIRP＝Max[Max(EIRP v(θ，φ))，Max(EIRP h(θ，φ))]
May need PeakEIRP to be used for the routine authentication of wireless device, that is, SAR, classification grade authenticate, radiation-emitting.
In addition, another emission mode radiance characteristic is antenna efficiency, η:
With to derive the similar mode of TRP according to the antenna gain directional diagram and derive antenna efficiency.
Directional diagram envelope correlation ρ eEstimate the electromotive force of the diversity gain of double antenna, double-receiver phone in mobile environment.The ρ test is determined Fading correlation based on measuring complex gain.Can use the measured multiple Rx directional diagram (for example, E θ 1 as described below, E φ 1, E θ 2 and E φ 2) of main antenna and secondary electric wire to estimate the envelope correlation that upper in-field model is caused by antenna.
Along with the appearance as the receiver diversity of the available feature in contemporary mobile radio station modulation /demodulation (" MSM ") ASIC, produced being used for the prediction multiaerial system in the demand of field practice condition radiation test how.MIMO equipment also can be benefited from this test.The key design parameter that is used for double antenna equipment is the correlation between antenna.The antenna that produces the height correlation signal in the double reception chain is used for receive diversity to Min. ground.Described embodiment utilizes envelope correlation, also referred to as Fading correlation, as the prediction of diversity gain in dual-antenna system.
Envelope correlation is predicted in complex voltage gain pattern that can be right according to antenna and the incident RF field of supposing.Identical with other receiving gain measurement, usually measure multiple antenna gain directional diagram with wired test.In the situation that commercial wireless device, this need to revise to install aerial lug to the destructiveness of equipment.Yet described embodiment does not carry out destructiveness to be revised, but utilizes the parts of the receiver module 70 of wireless device 12.For example, in cellular situation, CDMA rake receiver function needs the precise phase of pilot channel to estimate.By by the cell site simulator (such as, simulator 142) provide the pilot channel of activation and make radiance test module 40 along with phone records from the estimating as the power that can find and from inphase/orthogonal phase (I/Q) pilot tone as finding that the rake receiver receives of each receive chain/antenna reception along spherical rotary the RX_AGC packet the packet of RX_Pilot finger-like, can intactly generate the complex gain directional diagram on wireless device 12.This does not need that handheld device is carried out destructiveness and revises.
As above-mentioned receiver gain directional diagram, if in data acquisition period such as by forward link, the position/angles information wireless being transferred to wireless device 12, can integrate all daily records on this equipment.
If wireless device 12 is not accurately realized receiver diversity in idle pulley, can utilize the wireless device 12 that is in service call to determine the multiple directional diagram of many antennas.
Particularly, described embodiment comprises for measured complex radiation directional diagram being estimated the envelope Fading correlation ρ of mobile environment according to the antenna on the wireless device 12 in test cabinet 20 eApparatus and method.
Owing to having multiple antenna field directional diagram E mK electromagnetic plane wave (ray) F of (θ, φ) k m(θ, φ), the complex voltage V that occurs on m the antenna element that (θ, φ) locates can provide by following formula:
V m k = ∫ 0 2 π ∫ 0 π E m ( θ , φ ) · F m k ( θ , φ ) · sin θ · dθ · dφ
= ∫ 0 2 π ∫ 0 π ( E θ , m ( θ , φ ) · F θ , m k ( θ , φ ) + E φ , m ( θ , φ ) · F φ , m k ( θ , φ ) ) · sin θ · dθ · dφ
Therefore, at total variance E[|V of antenna field directional diagram again at this antenna element place m k| 2] be:
E [ | V m k | 2 ] = P V · ∫ 0 2 π ∫ 0 π | E θ , m ( θ , φ ) | 2 · P θ ( θ , φ ) · sin θ · dθ · dφ
+ P H · ∫ 0 2 π ∫ 0 π | E φ , m ( θ , φ ) | 2 · P φ ( θ , φ ) · sin θ · dθ · dφ
Wherein, P θAnd P φIn-field angle power density functions on expression θ (vertical polarization) and φ (horizontal polarization) direction, P VAnd P HBe constant, its expression is such as the average incident power on the wireless device 12 that polarizes along θ (vertically) and φ (level) respectively in typical RF environment that can find along the random drive route.
For antenna 1 and 2, from the cross covariance between the signal of two antenna receptions
Figure G2007800329017D00305
For:
E [ V 1 k · V 2 k * ] = E [ V θ , 1 k · V θ , 2 k * ] + E [ V φ , 1 k · V φ , 2 k * ]
= P H · ∫ 0 2 π ∫ 0 π ( XPR · E θ , 1 ( θ , φ ) · E θ , 2 * ( θ , φ ) · P θ ( θ , φ )
+ E φ , 1 ( θ , φ ) · E φ , 2 * ( θ , φ ) · P φ ( θ , φ ) ) · sin θ · dθ · dφ
Wherein, XPR=P V/ P H, and wherein * represents complex conjugate.
According to this two signal variance and cross covariance, the envelope correlation property coefficient is provided by following formula:
ρ e ≅ | ρ | 2 = | E [ V 1 k · V 2 k * ] | 2 E [ V 1 k · V 1 k * ] · E [ V 2 k · V 2 k * ]
Use the measured multiple antenna pattern E θ 1 of the wireless device 12 with antenna system 72 in can formula in front, E φ 1, E θ 2, E φ 2 calculates ρ as follows e, wherein antenna system 72 has cover the double antenna of 4 π surface of spheres with walk-off angle on the visual field:
R 12 = Σ j = 1 Nφ Σ i = 1 Nθ ( XPR · Eθ 1 i , j · Eθ 2 * i , j · Pθ i + Eφ 1 i , j · Eφ 2 * i , j · Pφi ) · sin θ i · Δθ · Δφ
σ 1 = Σ j = 1 Nφ Σ i = 1 Nθ ( XPR · Eθ 1 i , j · Eθ 1 * i , j · Pθ i + Eφ 1 i , j · Eφ 1 * i , j · P φ i ) · sin θ i · Δθ · Δφ
σ 2 = Σ j = 1 Nφ Σ i = 1 Nθ ( XPR · Eθ 2 i , j · Eθ 2 * i , j · Pθ i + Eφ 2 i , j · Eφ 2 * i , j · Pφi ) · sin θ i · Δθ · Δφ
Wherein, R is relevant to cross covariance between antenna 1 and 2; I, j are the index relevant to the angle position of survey sampling; N θ represents the quantity at θ angle; And N φ represents the quantity at φ angle.
Therefore, envelope correlation ρ eFor:
ρ e = | R 12 | 2 σ 1 · σ 2
In these calculate, value and the P of XPR (polarizability of in-field) θAnd P φThe form of function depends on RF environment (for example, city, suburb, rural area, highway etc.).
For example, the below has provided the P for the channel model that has Gauss's expansion having identical expansion on the azimuth on the elevation angle θAnd P φExpression formula:
Pθi = P v i = A V · exp - [ ( θi - m V ) 2 2 · σ V 2 ] Pφi = P h i = A h · exp - [ ( θi - m h ) 2 2 · σ h 2 ]
Wherein, Av and Ah are normaliztion constants, make P when carrying out integration on sphere θAnd P φ=1; m v, m hθ, the φ polarization external field average angle of arrival separately, representative value in one embodiment is m v=5 degree and m h=10 degree; And σ θ, σ φθ, the angle expansion separately of φ polarization external field, representative value in one embodiment is σ θ=15 degree and σ φ=30 degree.
Yet, should be noted that other expression formula is possible.
The some telephony modes with double antenna have been made.Measure multiple directional diagram and calculate Fading correlation according to the directional diagram of each test case.The ρ value scope that draws is 0.05 to 0.98.In addition, measure in typical indoor environment by the correlation between the signal of each antenna reception with identical pattern phone.Carry out these tests in the zone that is covered by local PCS service provider.
Particularly, with reference to Fig. 7, can find out according to measured " directional diagram " correlation results that measures in test cabinet 20, compare favourable with the result of measuring acquisition according to primary field.For example, figure 700 comprises corresponding to the transverse axis 702 of measured directional diagram ρ value with corresponding to the longitudinal axis 704 of following every field ρ value: phone 706 has and is connected to splitter and (indoor) measured under non line of sight (" NLOS ") condition single dipole antenna; Phone 708 has under near sighting distance (" LOS ") condition (indoor) measured two electrode couple antennas that are spaced apart 0.05 λ on the roof; Phone 710 has the two electrode couple sub antennas that are spaced apart 0.05 λ measured under the NLOS condition; Flip phone 712 has an exterior antenna and an inside antenna measured under the NLOS condition; Flip phone 714 has an exterior antenna and an inside antenna measured under the NLOS condition; Phone 716 has a pair of short and thick (stubby) exterior antenna measured under the NLOS condition; And phone 718, have a short and thick exterior antenna and an inside antenna of measuring under the NLOS condition.Therefore, figure 700 expression almost is positioned at over each other according to the ρ value of directional diagram and field data calculating for ρ value in a big way.
Due to the correlation between measured directional diagram ρ value and a ρ value, these results confirm and can carry out experiment test according to described embodiment, in order in the situation that do not support the diversity performance of the wireless device of dual-antenna diversity by the field test estimation that enlarges.
In addition, with reference to Fig. 8, the example of the ρ value 802 that the measured radiation mode that form 800 comprises the usage example phone is calculated different channels model 804.In this case, channel model 804 comprises indoor environment, city Microcell, city macrocell and the highway macrocell with outside transceiver base station.In addition, each channel model 804 comprises different variables sets 806.In this case, for example, variable 806 comprises polarized wave m, angle spread σ and polarizability XPR.It should be noted that, the statistic that channel model is used is the measurement of carrying out from people such as Kalliola, here by " Angular Power Distribution and Mean Effective Gain of Mobile Antennas InDifferent Propagation Environments; " incorporated in reference into IEEE Transactions on VehicularTechnology, Vol.51, No.5, in September, 2002.Based on these results of calculating, it is a kind of for estimating that with the complex radiation directional diagram Fading correlation between the mobile environment double antenna is with the robust method of the diversity performance of wireless device that characterize to support diversity that described apparatus and method provide.
Therefore, in described embodiment, can determine one or more predetermined radiance characteristics to wireless device at single test period, wherein this wireless device does not have cable, and this wireless device records its oneself measured data and synchrodata in inherent storage.For example, the radiance characteristic can comprise TIS value, TRP value and envelope correlation ρ eSubsequently, can with the radiance characteristic value that calculates based on measurement as described herein with such as can be compared by some predetermined thresholds of network carriers, manufacturing or standard group setting so as to determine that the radiance of wireless device is acceptable, approval and/or authentication.
Although the foregoing disclosure content shows exemplary embodiment, should be noted that in the situation that do not depart from as the scope of embodiment as described in the claims defined and can carry out variations and modifications.In addition, although the assembly of described embodiment is described with singulative or required, unless be explicitly described as odd number, otherwise plural number is also expected.

Claims (13)

1. method that is used for determining the radiance characteristic of described wireless device at the wireless device place comprises:
Each in a plurality of relevant moment determines that constantly wherein said a plurality of relevant moment are relevant to the zero hour by the measured characteristics of signals of the only forward link signal of described wireless device reception;
Receive synchronizing signal, wherein said synchronizing signal is the pulse signal that is generated by controller system, described controller system obtains the machine time as starting point fiducial time of the daily record on described controller system at the trailing edge of described pulse signal, and described fiducial time, starting point was used to determine the starting point in described daily record on described controller system;
Time stamp setting in the time of searching the trailing edge of described pulse signal in the described daily record of described wireless device in the daily record of described wireless device based on described synchronizing signal is the described zero hour; And
In the relevant described daily record that constantly measured characteristics of signals is recorded on described wireless device of each in described a plurality of relevant moment.
2. method according to claim 1, wherein measured characteristics of signals is power gain.
3. method according to claim 1, also comprise based on measured characteristics of signals and determine the antenna gain directional diagram.
4. method according to claim 3, wherein said antenna gain directional diagram is the antenna power gain directional diagram.
5. method according to claim 3, wherein said antenna gain directional diagram is antenna complex voltage gain pattern.
6. method according to claim 3 also comprises and determines the position of peak gain in described antenna gain directional diagram.
7. method according to claim 6 also comprises the sensitivity of determining the peak value receiver with the position of described peak gain in described antenna gain directional diagram.
8. method according to claim 7, also comprise the lowest power level of determining in the position of peak gain described in described antenna gain directional diagram, wherein can receive the prearranged signals quality indicator with described lowest power level.
9. device that is used for determining the radiance characteristic of described wireless device at the wireless device place comprises:
Be used for constantly determining in each of a plurality of relevant moment the module of the measured characteristics of signals of the only forward link signal that received by described wireless device, wherein said a plurality of relevant moment are relevant to the zero hour;
Be used for receiving the module of synchronizing signal, wherein said synchronizing signal is the pulse signal that is generated by controller system, described controller system obtains the machine time as starting point fiducial time of the daily record on described controller system at the trailing edge of described pulse signal, and described fiducial time, starting point was used to determine the starting point in described daily record on described controller system;
Time stamp setting when being used for searching in the daily record of described wireless device will the described daily record at described wireless device based on described synchronizing signal the trailing edge of described pulse signal is the module of the described zero hour; And
Be used for the module in each relevant described daily record that constantly measured characteristics of signals is recorded on described wireless device in described a plurality of relevant moment.
10. device according to claim 9, wherein measured characteristics of signals is power gain.
11. device according to claim 9 also comprises for determine the module of antenna gain directional diagram based on measured characteristics of signals.
12. device according to claim 11, wherein said antenna gain directional diagram are the antenna gain directional diagrams of selecting from the group that is comprised of antenna power gain directional diagram and antenna complex voltage gain pattern.
13. device according to claim 11 also comprises for determine the module of the sensitivity of peak value receiver in the position of described antenna gain directional diagram with peak gain.
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