CN102111798A - Method and device for generating TD-SCDMA analog test signal - Google Patents
Method and device for generating TD-SCDMA analog test signal Download PDFInfo
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- CN102111798A CN102111798A CN2009102390843A CN200910239084A CN102111798A CN 102111798 A CN102111798 A CN 102111798A CN 2009102390843 A CN2009102390843 A CN 2009102390843A CN 200910239084 A CN200910239084 A CN 200910239084A CN 102111798 A CN102111798 A CN 102111798A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B17/00—Monitoring; Testing
- H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
- H04B17/0085—Monitoring; Testing using service channels; using auxiliary channels using test signal generators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
The invention discloses a method for generating a time division-synchronous code division multiple access (TD-SCDMA) analog test signal. The method comprising the following steps of: generating a digital baseband test signal which comprises information bits changing along with time in the interchange process of a base station and a terminal device; and converting the digital baseband testing signal into an analog baseband test signal, and sending the analog baseband test signal. The invention also discloses a device for generating the TD-SCDMA analog test signal. According to the method, the terminal device is tested by using the information bits changing along with time in the generated test signal, so that the test can be expanded to the interchange process to enlarge the coverage of the test.
Description
Technical field
The present invention relates to a kind of wireless communication process system, method, be specifically related to the generation method and apparatus of a kind of TD-SCDMA (Time Division Synchronous Code Division Multiple Access: TD SDMA inserts) analog test signal.
Background technology
Typical TD-SCDMA radio communication system terminal equipment is all followed following step in the laboratory tests stage: generate the radiofrequency signal that meets the TD-SCDMA agreement by certain means; Terminal equipment receives and respective feedback according to agreement flow process correlation frequency signal; Demodulation result and interactive mode proofing chip processing capacity and receptivity according to terminal equipment.Wherein, according to protocol requirement, generating the base band test data of typical services scene, and this signal is converted into the radiofrequency signal of protocol compliant standard by headend equipment, is the key link of laboratory tests.
The TD-SCDMA signal source instrument that the general use test of existing test macro equipment vendors provide produces the analog test signal that meets the TD-SCDMA agreement.One the scheme of normal use be the TD-SCDMA signal work chamber component (Signal Studio) that Agilent (Agilent) company provides.This type of instrument comprises business scenario configuration and signal generator unit that one group of built-in parameter is solidified.By selecting business configuration, signal generator can call built-in base band data, produces satisfactory radiofrequency signal by radio frequency component again.Though this scheme maturity is higher, but the function point to the TD-SCDMA agreement covers extremely limited, the state-of-the-art signal source instrument of having issued at present also can only be supported the traditional business of 3GPP agreement R5 version regulation, to upgrading the HSDPA (High Speed Downlink Packet Access: high speed downlink packet inserts) that release protocol proposes, (Multimedia Broadcast Multicast Service: multimedia broadcasting and multicast) business can't provide good support for HSUPA (High Speed Uplink Packet Access: high speed uplink packet inserts) and MBMS.In addition, the business scenario parameter that existing signal source instrument can produce is fixed, and can't produce the time dependent configuration that occurs in TD-SCDMA base station and the terminal equipment reciprocal process, for example variation of the transformat in the reconfiguration course etc.These functional defects can't satisfy the testing requirement of TD-SCDMA terminal equipment of new generation.
Summary of the invention
The main technical problem to be solved in the present invention is that a kind of generation method and apparatus that can effectively simulate the TD-SCDMA analog test signal of reciprocal process is provided.
For solving the problems of the technologies described above, the invention provides a kind of generation method of TD-SCDMA analog test signal, comprising:
Generate the digital baseband test signal, comprise the time dependent information bit in base station and the terminal equipment reciprocal process in the described digital baseband test signal;
The digital baseband test signal is converted to Analog Baseband test signal and transmission.
Time dependent information bit in wherein said base station and the terminal equipment reciprocal process comprises transmission block information, transformat combination indication, through-put power control and synchronizing signal.
Wherein generating the described digital baseband test signal of the time dependent information bit in base station and the terminal equipment reciprocal process that comprises comprises: be the cycle to dispose described information bit with the subframe, in the beginning of each subframe, adjust the configuration that changes other physical layer parameter that causes by described information bit automatically.
Wherein said digital baseband test signal comprises that also high speed downlink packet inserts base band data and/or high speed uplink packet inserts base band data.
The data that also comprise Adaptive Modulation and Coding, the automatic repeat requests of mixing and 16 quadrature amplitude modulation of anolog base station in the wherein said digital baseband test signal.
Wherein said digital baseband test signal also comprises the multimedia broadcasting and multicast base band data.
Wherein said digital baseband test signal also comprises at least two interfered cells of simulation and/or at least two test signals of disturbing business.
For solving the problems of the technologies described above, the present invention also provides a kind of generating apparatus of TD-SCDMA analog test signal, comprises digital baseband data generation module and transmitter module,
Described digital baseband data generation module is used to generate the digital baseband test signal, comprises the time dependent information bit in base station and the terminal equipment reciprocal process in the described digital baseband test signal;
Described transmitter module is used for the digital baseband test signal being converted to the Analog Baseband test signal and sending.
Time dependent information bit in wherein said base station and the terminal equipment reciprocal process comprises transmission block information, transformat combination indication, through-put power control and synchronizing signal.
It is the cycle to dispose described information bit that described digital baseband data generation module also is used for the subframe, in the beginning of each subframe, adjusts the configuration that is changed other physical layer parameter that causes by described information bit automatically.
Wherein said digital baseband test signal comprises that also high speed downlink packet inserts base band data and/or high speed uplink packet inserts base band data and/or multimedia broadcasting and multicast base band data.
Wherein said digital baseband test signal also comprises at least two interfered cells of simulation and/or at least two test signals of disturbing business.
The invention has the beneficial effects as follows:
(1) the present invention comes terminal equipment is tested by comprise time dependent information bit in the test signal that generates, and makes test can expand to reciprocal process, has improved the coverage rate of test.
(2) the present invention comprises HSDPA, HSUPA and MBMS in test signal, makes test can cover 3GPP R8 version, has further enlarged test specification.
(3) the present invention is also professional by interfered cell and interference, with the working condition of test terminal equipment under nonideality.
(4) the present invention separately realizes digital baseband test signal and emission, makes radiating portion to be realized by simple hardware, has reduced cost.
Description of drawings
Fig. 1 is the structural representation of a kind of execution mode of apparatus of the present invention;
Fig. 2 is the structural representation of a kind of execution mode transmitter module of apparatus of the present invention;
Fig. 3 is the structural representation of the another kind of execution mode of apparatus of the present invention;
Fig. 4 is the flow chart of a kind of execution mode of the inventive method;
Fig. 5 is that the DBB signal of a kind of execution mode of the inventive method forms block diagram;
Fig. 6 is a kind of execution mode TD-SCDMA of the inventive method physical channel format chart;
Fig. 7 is the flow chart of the another kind of execution mode of the inventive method.
Embodiment
In conjunction with the accompanying drawings the present invention is described in further detail below by embodiment.
The generating apparatus of TD-SCDMA analog test signal of the present invention, its a kind of embodiment, as shown in Figure 1, comprise DBB (Digital Base-Band: digital baseband) signal generation module and transmitter module, this DBB signal generation module is used to generate the DBB test signal, comprising the time dependent information bit in base station and the terminal equipment reciprocal process; Transmitter module then is used for the digital baseband test signal being converted to the Analog Baseband test signal and sending.
In a kind of execution mode, this DBB signal generation module available software mode realizes, it is fully expanded software and is implemented in proportion in the whole signal generating system, utilizes the various functions of the flexible disposal ability simulating transmitting machine physical layer of software, produces the DBB signal that meets the TD-SCDMA agreement.Transmitter module can adopt hardware to realize, it is compared with traditional transmitter, and the separation because of the DBB signal generates can be converted into analog signal to baseband signal by the universal front end radio frequency hardware of simplifying, and is used for the test of TD-SCDMA terminal equipment.
In a kind of execution mode, the DBB signal that meets the TD-SCDMA agreement that DBB signal generation module generates, can be counted as the TD-SCDMA transmitter physical layer process system of a software virtual, possess the generation function of base station down signal and terminal equipment upward signal.It can realize that (3rd-Generation Partnership Project: third generation partner program) base band data of whole traditional businesses of stipulating in the agreement R8 version, HSDPA, HSUPA and MBMS business produces function to 3GPP.For (Coded Composite Transpot Channel: conventional voice-and-data business coded composite transport channel), this module be responsible for finishing transmission channel forward error correction coding, transmission channel combination, rate-matched, scrambling, interweave and a series of processing procedures of physical channel mapping based on CCTrCH.Can anolog base station and terminal equipment reciprocal process in various time dependent information bit, the transformat combination indication), SS (Synchronization Signal: synchronizing signal) and TPC (Transmission Power Control, through-put power is controlled) this information bit comprises transmission block information, TFCI (Transmit Format Combined Indicator:.For HSDPA and the HSUPA business upgraded, this module is except that can carrying out conventional transmission channel and physical channel processing capacity, Adaptive Modulation and Coding), HARQ (Hybrid Auto Repeat Request: mix automatic repeat requests) and 16QAM (16 Quadrature Amplitude Modulation:16 quadrature amplitude modulation) high order modulation process the AMC of anolog base station that can also be perfect (Adaptive Modulation and Coding:, produce and control channel, data channel and the indicating channel data of reciprocal process correspondence.Except generating desirable DBB signal, this module can also be simulated a plurality of (two or more) interfered cell, and a plurality of (two or more) disturb professional, and in the wireless transmission environment various typical non-ideal communication channels to the influence of signal.
In a kind of execution mode, transmitter module comprise ABB (Analog Base-Band: Analog Baseband)/RF (Radio Frequency: radio frequency) unit, connect the temporary location (being known as the data source plate again) and the FPGA control unit of DBB signal generation module and ABB/RF unit, as shown in Figure 2.The FPGA control unit is responsible for the initialization setting to the ABB/RF unit, comprises the initial frequency deviation of specifying ABB and frequency and the transmitting power of RF.The data source plate loads base band data from DBB signal generation module with set form, and after carrying out data and send preparing, circulation sends the IQ data of the four multiplying powers sampling of anchor-frame to ABB under the control of FPGA control unit.This module can receive the DBB test signal from DBB signal generation module, handles to be converted into the ABB test signal, and emission radio frequency analog test signal on the carrier frequency of appointment and transmitting power accurately.This TD-SCDMA analog test signal can pass through the antenna transmission space, also can directly be connected with tested equipment by cable.
The another kind of execution mode of apparatus of the present invention, as shown in Figure 3, DBB signal generation module comprises a plurality of desirable DBB signal generation units, its generated ideal DBB signal is transferred to many sub-districts merge cells, after relative time delay and relative power decay, be transferred to the channel simulation unit with simulating multi-path decline and time delay, and then be transferred to transmitter module and handle the back emission.
In the above-described embodiment, all physical layer process before traditional test signal transmitter filter output are finished by this software module of DBB signal generation module, and hardware only need be realized the emission of RF signal; Support all routines, HSDPA, HSUPA and the MBMS business of 3GPP R8 protocol definition, can generate the analog test signal of professional control channel, data channel and indicating channel; Reciprocal process between anolog base station and the terminal equipment produces time dependent transmission block and control bit information dynamically; Support the independent parameter configuration under many sub-districts, the concurrent situation of multi-service; Various typical radio channels are generated by DBB signal generation module the influence of ideal signal, do not need extra hardware device.
The generation method of TD-SCDMA analog test signal of the present invention, its a kind of execution mode as shown in Figure 4, comprising:
Step 402: generate the DBB test signal, comprise the time dependent information bit in base station and the terminal equipment reciprocal process in this DBB test signal;
Step 404: the DBB test signal is converted to ABB test signal and transmission.
The overall thought that the present invention sends out method is the hierarchical relationship difference configures physical layer parameter of elder generation according to " sub-district-business ", again according to the triggering signal product process of time sequencing by subframe.
A kind of execution mode of the inventive method, the generation block diagram of baseband signal as shown in Figure 5.
A kind of execution mode of the inventive method, professional principle of classification and collocation method are as follows: the feature according in the 3GPP agreement time sequencing and the business of TD-SCDMA service definition being used physical channel is divided into four big classes to the test signal of existing TD-SCDMA agreement support: traditional business, MBMS, HSDPA and HSUPA business.This four big class business can further be divided into 11 group: CCTrCH (Coded Composite Transpot Channel: coded composite transport channel) again, PICH (Paging Indicator Channel: Page Indication Channel), FPACH (Fast PhysicalAccess Channel: quick Acquisition Indicator Channel), MICH (MBMS Indicator Channel: the multi-medium multi-packet broadcasting indicating channel), HSDSCH (High Speed Physical Downlink SharedChannel: high-speed physical downlink shared channel (HS-PDSCH)), HSSCCH (Shared Control Channel forHSDSCH:HSDSCH shared control channel), HSSICH (Shared Information Channelfor HSDSCH:HSDSCH shares information channel), EPUCH (EDCH Physical UplinkChannel: strengthen special-purpose physical uplink channel), ERUCCH (EDCH Random Access UplinkControl Channel:EDCH inserts ascending control channel at random), EAGCH (EDCH AbsoluteGrant Channel, the EDCH absolute grant channel), EHICH (EDCH Hybrid ARQAcknowledgement Indicator Channel, EDCH mix re-transmission feedback indicating channel).
Most of traditional business DBB signal, be meant before the 3GPP R6 agreement, with the various voice-and-data business of CCTrCH as the transmission channel combining form, they are mapped on the special-purpose and general physical channel (comprising DPCH, PCCPCH, SCCPCH, PUSCH and PDSCH).The physical layer parameter of this class business comprises each component TrCH (Transport Channel: transmission channel) parameter, TF (Transport Format: parameter and PhCH (Physical Channel: parameter physical channel) transformat).Wherein the parameter of each TrCH (original transmitted block message, transmission block size, transmission block quantity, CRC check bit length, channel coding method, parameters of rate matching) can not change in its TTI (Transmission Time Interval: Transmission Time Interval is generally 10ms, 20ms, 40ms or 80ms).The actual physical channel (time slot, code channel, spreading factor) that uses then may change with the variation of TF parameter.Characteristics according to this part traditional business, TTI (being the maximum TTI among each component TrCH of CCTrCH) with a CCTrCH is a base unit definition configuration parameter, and the physical channel when comprising each component TrCH parameter, TF set and the combination of corresponding maximum transmitted piece distributes.On the other hand, on the physical channel of CCTrCH mapping, may carry some extraneous informations, TFCI (the Transmit Format CombinedIndicator: the transformat combination indication), be used for the TPC (Transmission PowerControl: through-put power is controlled) of power control and be used for synchronous SS (Synchronization Signal: synchronizing signal) that comprises the actual TF of use of indication.These information can change in time, and present embodiment can be to be configured in the cycle with subframe (5ms), in the beginning of each subframe, can adjust the configuration that is changed other physical layer parameter that causes by these time-varying parameters automatically.
Also have some not to be based on the type of service of CCTrCH in addition, comprise PICH and FPACH, because they are auxiliary to necessity of the conventional traditional business of definition before the 3GPP R6 agreement, also be divided in the traditional business, in a kind of execution mode, can be unit with the subframe, collocating traffic parameter.
MBMS, HSDPA and HSUPA are the TD-SCDMA technology standards that grows up after 3GPP R6 agreement.
The MBMS business comprises MSC MTCH and indicating channel MICH again.Wherein MTCH also is based on CCTrCH, and its collocation method is identical with conventional traditional business above-mentioned; MICH configuration then with traditional business in the collocation method of PICH similar, the number of chips of specifying its each indication to use in every subframe.
HSDPA comprises that the base station sends MSC HSDSCH, the control channel HSSCCH of high-speed down data and the terminal equipment feedback channel HSSICH to the base station.In a kind of execution mode, three's collocation method is strictly observed the reciprocal process of TD-SCDMA agreement regulation: HSDSCH and use physical channel and the transmission channel configuration that provides by related with it HSSCCH; The content configuration of HSSCCH is then according to the multidate information that obtains from the HSSICH feedback, in conjunction with the specification requirement generation of AMC and HARQ.
In a kind of execution mode, similar to HSUPA collocation method and HSDPA, also be that the control channel UCCH that dynamically reciprocal process: EPUCH disposes corresponding MSC EDCH and follows according to the physical resource that can be used for the high speed uplink transmission of the mandate of EAGCH is simulated in strictness; And EHICH feeds back to terminal equipment to the situation that the base station receives; ERUCCH then only disposes once in initial access procedure.
In a kind of execution mode, the TD-SCDMA physical channel adopts four-layer structure, as shown in Figure 6, comprises System Frame Number, radio frames, subframe and time slot/code channel, and wherein the subframe of 5ms duration is the least unit of all kinds of business configuration.Present embodiment is exactly to pursue the signal product process of subframe triggering different kinds of business in chronological order, the independent baseband signal of each business in its TTI that generate of elder generation, and foundation concerns each service signal of extraction toward each other again, accumulates a complete sub-frame data.
In a kind of execution mode, as shown in Figure 7, the generation flow process of test signal comprises:
Step 702: flow process begins, and the business of all existence is carried out the initial configuration of physical layer parameter according to aforesaid method;
Step 704: and, calculate each professional triggered time and unit persistence length (being its TTI) according to configuration parameter, form a service allocation list;
Step 706: main thread is from zero moment, every service allocation list situation of the time of a subframe (5ms) scanning afterwards;
Step 708: judge whether to have triggered new business, be then to change step 710, otherwise change step 706;
Step 710: judge whether subframe finishes, be to change step 722, otherwise change step 712;
Step 712: if having one or more new business to be triggered at first in certain subframe, then the branch thread of respective amount is activated, and each divides the generative process of the corresponding professional DBB signal of thread;
Step 714: each is professional through corresponding transmission channel processing procedure (comprise that typical original transmitted block message loads, additional CRC, chnnel coding, code block are cut apart, rate-matched, interweave and scrambling etc.), generates the code channel data after the physical channel mapping in the professional TTI;
Step 716: on the time point that each subframe finishes, all professional threads that divide are gathered, and corresponding data on each business time-slot of current subframe are extracted out, distribute through spread spectrum, scrambling and midamble sign indicating number.Data on the special time slot (descending pilot frequency DwPTS or ascending pilot frequency UpPTS) also during this time are added into the appropriate location of subframe;
Step 718: become complete sub-frame data with the special time slot data splicing by each business time-slot;
Step 720:, form final output DBB test signal through up-sampling and transmitter filtering; Change step 710, main thread continues operation forward, scans the business configuration of next subframe, and so circulation is till the data that generate satisfy required number of sub frames;
Step 722: finish.
In fact the process that generates base band data has simulated the method for the processing of common hardware, emphasizes configuration, triggering and the renewal of event table.After each branch thread that generates sub-frame data finishes, all can do necessary renewal to the corresponding business configuration.For the business based on CCTrCH, the transformat of each component TrCH may change in time, by the value variation embodiment of transformat combination indication (TFCI).Upgrade the TFCI value by TTI border, can simulate this behavior at each TrCH.Equally, for time dependent power control TPC order and SS order synchronously, also can realize by on each subframe starting point, calling different configurations.For HSDPA and HSUPA business, because there are cross-correlation in its MSC, control channel and feedback channel, so the configuration of each channel is dynamically to produce.Above-mentioned execution mode also can be simulated this dynamic interaction behavior, such as the configuration of setting feedback channel according to the demodulation result of MSC, according to feedback channel interlock configuration control channel, determine the configuration of MSC next time according to the control channel content at last again.
The process that has the receiver demodulation in the reciprocal process can realize with existing software or hardware technology.
In a kind of execution mode, simulate the situation that has a plurality of interfered cells and a plurality of interference business in the actual mobile communication environment, can set up the main thread of a data generation for Serving cell and each interfered cell respectively, produce the desirable DBB data of each sub-district respectively, at last by setting the difference power and the symbol time delay of the relative Serving cell of interfered cell, each cell data data is handled and weighted superposition, formed final signal.And have the business of disturbing for Serving cell, can be used as regular traffic to them earlier carries out the transmission channel processing, realizes disturbing the generation of code channel signal by adjusting its relative power that takies code channel then.
In a kind of execution mode, can also comprise of the influence of imperfect wireless transmission channel in the base band data of its generation to signal.After each cell data generative process, can select whether to allow data by wireless channel with by what kind of channel.Dan Jing, the multipath of it the is built-in 3GPP typical wireless channel that it is stipulated in the agreement that are delayed and power attenuation correction parameter model, comprise simple Gaussian channel, CASE1, CASE2, CASE3, PA3, PB3, VA30, VA120 etc., cover the various typical radio test environments of TD-SCDMA.Desirable DBB data can be simulated the received signal through the real wireless transmission environment after distorting through the channel model parameter.
Base band data (passing through or do not pass through channel) is converted into the radiofrequency signal of specifying specified transmission power on the frequency, is used for concrete test.The realization of this part can be adopted existing commercial signal source instrument.These instruments have good radio-frequency performance, and can add simple process such as noise to signal, but price is very expensive mostly, and function is limited.In the present embodiment because non-ideal factors such as noise, interference can realize by software module the influence of test signal, so to the hardware transmitter section require relatively low.
Above content be in conjunction with concrete execution mode to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (12)
1. the generation method of a TD-SCDMA analog test signal is characterized in that, comprising:
Generate the digital baseband test signal, comprise the time dependent information bit in base station and the terminal equipment reciprocal process in the described digital baseband test signal;
The digital baseband test signal is converted to Analog Baseband test signal and transmission.
2. the method for claim 1 is characterized in that, the time dependent information bit in wherein said base station and the terminal equipment reciprocal process comprises transmission block information, transformat combination indication, through-put power control and synchronizing signal.
3. method as claimed in claim 2, it is characterized in that, wherein generating the described digital baseband test signal of the time dependent information bit in base station and the terminal equipment reciprocal process that comprises comprises: be the cycle to dispose described information bit with the subframe, in the beginning of each subframe, adjust the configuration that changes other physical layer parameter that causes by described information bit automatically.
4. the method for claim 1 is characterized in that, wherein said digital baseband test signal comprises that also high speed downlink packet inserts base band data and/or high speed uplink packet inserts base band data.
5. method as claimed in claim 4 is characterized in that, also comprises the data of Adaptive Modulation and Coding, the automatic repeat requests of mixing and 16 quadrature amplitude modulation of anolog base station in the wherein said digital baseband test signal.
6. the method for claim 1 is characterized in that, wherein said digital baseband test signal also comprises the multimedia broadcasting and multicast base band data.
7. as the arbitrary described method of claim 1 to 6, it is characterized in that wherein said digital baseband test signal also comprises at least two interfered cells of simulation and/or at least two test signals of disturbing business.
8. the generating apparatus of a TD-SCDMA analog test signal is characterized in that, comprises digital baseband data generation module and transmitter module,
Described digital baseband data generation module is used to generate the digital baseband test signal, comprises the time dependent information bit in base station and the terminal equipment reciprocal process in the described digital baseband test signal;
Described transmitter module is used for the digital baseband test signal being converted to the Analog Baseband test signal and sending.
9. device as claimed in claim 8 is characterized in that, the time dependent information bit in wherein said base station and the terminal equipment reciprocal process comprises transmission block information, transformat combination indication, through-put power control and synchronizing signal.
10. the device of stating as claim 9, it is characterized in that, it is the cycle to dispose described information bit that described digital baseband data generation module also is used for the subframe, in the beginning of each subframe, adjusts the configuration that is changed other physical layer parameter that causes by described information bit automatically.
11. device as claimed in claim 8 is characterized in that, wherein said digital baseband test signal comprises that also high speed downlink packet inserts base band data and/or high speed uplink packet inserts base band data and/or multimedia broadcasting and multicast base band data.
12., it is characterized in that wherein said digital baseband test signal also comprises at least two interfered cells of simulation and/or at least two test signals of disturbing business as the arbitrary described device of claim 8 to 11.
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| CN2009102390843A CN102111798A (en) | 2009-12-29 | 2009-12-29 | Method and device for generating TD-SCDMA analog test signal |
| PCT/CN2010/072508 WO2010148789A1 (en) | 2009-12-29 | 2010-05-07 | Method and apparatus for generating td-scdma simulating test signals |
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2009
- 2009-12-29 CN CN2009102390843A patent/CN102111798A/en active Pending
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2010
- 2010-05-07 WO PCT/CN2010/072508 patent/WO2010148789A1/en active Application Filing
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| CN102914736A (en) * | 2011-08-01 | 2013-02-06 | 西门子公司 | Apparatus, method and computer program product for testing processing electronics |
| CN103765807A (en) * | 2011-08-23 | 2014-04-30 | Lg电子株式会社 | Method of operating an HARQ buffer for a dynamic sub-frame change and an apparatus for same |
| US9319196B2 (en) | 2011-08-23 | 2016-04-19 | Lg Electronics Inc. | Method of operating an HARQ buffer for a dynamic sub-frame change and an apparatus for same |
| CN103765807B (en) * | 2011-08-23 | 2016-11-16 | Lg电子株式会社 | The method of the harq buffer device that operation changes for dynamic subframe and equipment thereof |
| CN104283623A (en) * | 2014-10-01 | 2015-01-14 | 工业和信息化部电信研究院 | MIMO-OTA testing method supporting multi-cell interference |
| WO2017031931A1 (en) * | 2015-08-27 | 2017-03-02 | 华为技术有限公司 | Device, board card and method for signal output |
| US10149181B2 (en) | 2015-08-27 | 2018-12-04 | Huawei Technologies Co., Ltd. | Signal output apparatus, board, and signal output method |
| CN106533497A (en) * | 2015-09-14 | 2017-03-22 | 展讯通信（上海）有限公司 | Dual-cell HSDPA (High Speed Downlink Packet Access) digital IQ signal generating method and apparatus |
| CN106533497B (en) * | 2015-09-14 | 2019-01-04 | 展讯通信（上海）有限公司 | The generation method and device of double small area HSDPA digital I/Q signal |
| CN109085543A (en) * | 2018-08-24 | 2018-12-25 | 瑞达微（北京）科技有限责任公司 | LFM waveforms generator |
| CN114793139A (en) * | 2021-01-07 | 2022-07-26 | 安立股份有限公司 | Measuring device and measuring method |
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| Publication number | Publication date |
|---|---|
| WO2010148789A1 (en) | 2010-12-29 |
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