CN1753329A - Method of timing and timing calibration of base station radio frequency remoter and its use - Google Patents
Method of timing and timing calibration of base station radio frequency remoter and its use Download PDFInfo
- Publication number
- CN1753329A CN1753329A CN 200510021957 CN200510021957A CN1753329A CN 1753329 A CN1753329 A CN 1753329A CN 200510021957 CN200510021957 CN 200510021957 CN 200510021957 A CN200510021957 A CN 200510021957A CN 1753329 A CN1753329 A CN 1753329A
- Authority
- CN
- China
- Prior art keywords
- base station
- radio frequency
- timing
- digital signal
- far
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
This invention relates to a method for a base station RF zoom-out timing and timing calibration and its usage, in the communication system between a wireless base station divided by the analog IF part and connected by the set wire and wireless two-way transmission measures and the front device of the far-end analog T-R processors near the T-R antenna, interface units are set between the base band digital signal process part of the base station and the antenna interface of the RF T-R processor front, the base station sends a test signal to the RF T-R processor front at the working state and receives the feedback signals to get the total time delay value on the entire T-R loop by comparing the T and R signals to be taken as the lead of timing and timing calibration between the base station and the front device of the RF T-R processor together with the front and the transformation time delay to realize total network synchronization and accurate position of UE.
Description
Technical field
What the present invention relates to is time delay calibrating method behind a kind of base station radio frequency remoter that solves radio communication base station/transceiver system, and the purposes of this method.
Background technology
Along with the development that comprises 3G (Third Generation) Moblie systems such as WCDMA and TD-SCDMA, be subjected to the restriction of its 2GHz working frequency range radio wave propagation characteristic, must increase the quantity of base station greatly, and require it to realize three-dimensional the covering, therefore its wireless base station device can't be continued to use the radio-frequency (RF) transceiver by discrete component and the very little chip design of integrated level, and is connected traditional methods for designing such as sending and receiving antenna and radio-frequency (RF) transceiver with the low-loss radio frequency cable.Along with the increase of transceiver quantity, property difference between discrete component and the difficulty when using not only thick but also long radio frequency cable will cause people's wage adjustment to survey are with inefficient, and its result will cause the problem on productibility, cost and the project installation.And, the radio frequency cable that connects between antenna and the indoor radio-frequency (RF) transceiver is bigger with the loss ratio of super band at 2GHz, the loss of radio frequency cable can't stand, especially concerning the mobile communication system of using smart antenna, because antenna amount increases greatly, the problem of aspects such as its feeder loss, cable cost and installation all will be difficult to overcome.
For this reason, the 3G (Third Generation) Moblie wireless base station design of a kind of " the tower smart antenna array that is used for wireless communication system " by name is disclosed in the Chinese patent of ZL 01201473.7, to receive, the low noise amplifier of receive path and the high power amplifier in the transmission channel place outdoor unit in the sender, and be positioned at receipts, be connected with the antenna short distance near sending out antenna, radio frequency is received, the part of sender except that low noise amplifier and high power amplifier is installed in the indoor unit, with long radio frequency cable the low noise amplifier in the outdoor unit is connected with radio frequency receiver in the indoor unit, with the high power amplifier in the outdoor unit being connected with radio frequency sender in the indoor unit than the radio frequency cable of length.In indoor unit, the radio frequency that receives is converted to intermediate-freuqncy signal, be digital signal and after the digital intermediate frequency processing of circuit through mould/number conversion again, deliver to digital baseband processing unit (DSP); After Digital IF Processing processing of circuit and D/A switch are analog intermediate frequency signal, send the radio frequency analog transmitter by the digital signal to be launched of DSP output, be converted to radiofrequency signal again and send the outdoor unit emission.This scheme increases and sacrifices the problem of transmitting power by connecting indoor unit and outdoor unit with radio frequency cable with the receiver noise factor of avoiding cable loss to cause.
Because this scheme does not fundamentally solve the radio frequency cable loss and reaches radio frequency cable cost problem of higher more greatly, make the base station equipment design cost high.And antenna and outdoor unit thereof do not allow too far yet apart from indoor unit, usually within 60 meters, is difficult to finish the three-dimensional that 3-G (Generation Three mobile communication system) must realize and covers.For example in the building, because radio frequency cable is thicker, the engineering that outdoor unit is connected on the indoor unit can be very difficult.
What in addition, have use at present in 3G FDD system (as WCDMA) is a kind of base station equipment scheme of using Optical Fiber Transmission.Though this scheme can solve the difficulty in above-mentioned radio frequency cable transmission range and the flexible wiring, but owing to increased by a cover optical transmission circuit, cause cost to increase, special system at many antennas, for example use in the system of smart antenna, this cost increase can be quite tangible.
And every suit outdoor unit in the above-mentioned technology must use and a pair ofly be connected with indoor unit as bi-directional transmission medium such as radio frequency cable or optical fiber.This a pair of transmission medium can be understood as a radio frequency cable and adds many control lines concerning TDD system (as TD-SCDMA); Concerning the FDD system, then up-downgoing must be used optical fiber or cable respectively, if use an Optical Fiber Transmission, then need take two optical wavelengths.All can only adopt Y-connection between a plurality of outdoor units and an indoor unit in above-mentioned two kinds of schemes, promptly many cover sending and receiving antennas and outdoor unit thereof must be directly connected to indoor unit by cable or optical fiber separately, the project installation inconvenience.
Because the radio wave propagation characteristic of 3G (Third Generation) Moblie 2GHz working frequency range, the covering radius of each macro cell base station in its communication network (a cover antenna) can only have the 1-3 kilometer, in the zone that the area that high buildings and large mansions stand in great numbers in the city, trees are blocked, the building etc., this covering radius is also much smaller.And in this overlay area, may also can there be the shadow region that much can't communicate by letter.Because the overlay area of each wireless base station is too little, therefore in a city, realize intact covering, just must set up a large amount of base stations, wherein the selection of site and construction cost all are very difficult problems.
Use present base station equipment design, all must there be self complete base station equipment configuration each sub-district, comprise whole parts of handling the analog radio frequency transmitting-receiving from digital baseband signal, cause the base station cost too high, and, a lot of base station equipments can't be used Iub interface connecting system easily, make the cost of the wireless base station device that every sub-district bears too high.
In second generation mobile communication (GSM and the IS-95CDMA) system, solve the coverage hole problem by using the repeater.But in 3-G (Generation Three mobile communication system),, must cause service quality to descend and introduce the repeater, so 3-G (Generation Three mobile communication system) can not be used the repeater in principle simply owing to must guarantee system service quality (QoS).And, in the time can't setting up radio frequency cable or optical fiber between indoor unit and the outdoor unit, (for example in the city, need to cross over the street), can't realize that radio frequency zooms out, promptly can't realize the wireless connections between radio frequency or the intermediate-freuqncy signal.
For solving the little and coverage hole of coverage radius of cell effectively again relatively easily, solve the problem that a large amount of indoor coverings provide the problem of wireless data service and reduce the wireless base station cost, the applicant was that the baseband digital signal processing section indoor equipment that has proposed a kind of analog radio frequency transceiver front-end equipment with far-end and wireless base station in 200510001653.2 partly separates at analog intermediate frequency at application number once, and the intermediate frequency transmission method and the corresponding IF interface that are connected with the wireless base station through various wired with wireless transmitted in both directions means.A pair of transmission medium be can use to many far end radio frequency analog transceiver letter machine unit, and star and/or (what wherein have more practical engineering application value is the chain connected mode of serial successively) connected in series realized.Comprise analog radio frequency Transmit-Receive Unit and IF interface in the radio-frequency front-end equipment of far-end, comprise IF interface and baseband digital signal processing unit in the indoor unit, be connected by the intermediate frequency transmission medium between the IF interface of the IF interface of indoor unit and far end radio frequency headend equipment.Its IF interface can close a plurality of professional intermediate-freuqncy signals, a plurality of real-time control and non real-time Monitoring and Controlling signal and reference clock Lu Chengyi Wideband Intermediate Frequency signal and send on the described intermediate frequency transmission medium and transmit; Also can will be shunted to a plurality of professional intermediate-freuqncy signals, a plurality of real-time control and a plurality of non real-time Monitoring and Controlling signal and reference clock simultaneously from a Wideband Intermediate Frequency signal on the intermediate frequency transmission medium.At the indoor unit of base station equipment and this intermediate frequency transmission medium between the far end radio frequency headend equipment, can be immediate frequency cable or the optical fiber that adopts the wired connection mode wherein, also can be the microwave relay unit that adopts the wireless connections mode.Because what transmit on the intermediate frequency transmission medium is the intermediate-freuqncy signal that comprises analog intermediate frequency transmission technology and digital intermediate frequency transmission technology, helps reducing the base station equipment cost and realize being connected between a plurality of far end radio frequency headend equipments and an indoor unit.
It carries out frame mode that chain connects to a plurality of far end radio frequency headend equipment subsystems can be as shown in Figure 1.The function of all baseband portion of base station has been realized in wireless base station 100 among the figure, and its geographical position can be represented with longitude and latitude and height above sea level.With this position as a reference, be expressed as reference origin (0,0,0) among the figure.Be connected with many (n) far end radio frequency transceiver realizing by interface circuit 110 and zoom out.Only marked a far end radio frequency transceiver 120 wherein among the figure, its geographical position relatively and reference origin be (x, y, z).This far end radio frequency transceiver is that the transmission line 130 of L is connected with indoor base station 100 by length, and this transmission line can be immediate frequency cable, optical fiber, also can be wireless mode, as microwave.In addition, also have m user terminal 150 to 15m in the sub-district that far end radio frequency transceiver 120 is supported, wherein, terminal 150 and the 15m air line distance of far end radio frequency transceiver therewith are respectively d0 and dm.This relative geographical position (x, y is z) known or can measure.
In 3-G (Generation Three mobile communication system), the requirement of a user location is arranged all.Wherein locating more accurately, is the particular location (to ground system, only considering the position at horizontal plane) for the user terminal that obtains to activate.The technology of the acquisition customer location that tradition is used can be as shown in Figure 2.2A among the figure is in the system of a plurality of sub-districts is arranged, obtain the method for terminal location by the distance between measuring terminals and a plurality of base station, this distance has been passed through Digital Signal Processing and has been obtained in the base station, use two or 3 base stations, can determine the particular location of user terminal on the intersection point in equidistant garden, its error is the certainty of measurement of distance.This method can both be used in FDD system or TDD system.2B among the figure is the method that with single base station the user is positioned in having used the TD-SCDMA system of smart antenna, the base station can obtain user's position by the measured value that smart antenna obtains residing azimuth of user terminal (DOA) and distance, and its precision depends on the resolution of range measurement accuracy and angle.
In present wireless communication system, only need know to the conversion time delay (this conversion time delay can by conventional method be measured) of signal in base station and radio-frequency (RF) transceiver can picked up signal from the base station (baseband digital signal processing section) to the propagation of antenna with change time delay.This time delay is very little usually, does not influence the timing and the range measurement of system, so generally all ignore.In TDD (TD-SCDMA) system, be by asking relevant method, obtain the delay inequality that base station and terminal receive, again according to the method for system synchronization, reception and emission with the time delay pair radio-frequency (RF) transceiver that is connected with this antenna that this mode obtained are regularly calibrated, to obtain the synchronous of whole network.When carrying out the user terminal location, the time delay that equally also adopts this mode to measure acquisition is calibrated the user terminal location that the traditional user terminal localization method of aforementioned usefulness obtains, to obtain user terminal location accurately.
Because in the communication system of in engineering, having used at present, that can realize between the indoor unit of its base station equipment and far end radio frequency headend equipment zooms out apart from very short, generally only tens meters, can be left in the basket so the problems such as range measurement error that time delay causes in its geographical relatively alternate position spike and the radio wave propagation process are also not obvious, also not draw attention as yet.
Along with the increase of zooming out distance between base station equipment indoor unit and far end radio frequency headend equipment, the problems such as influence of this range measurement error that causes because of time delay in geographical relatively alternate position spike and the radio wave propagation process can not be left in the basket with regard to highlighting again.For example, job requirement the whole network of TDD system (as TD-SCDMA) is synchronous, i.e. the launch time of each sub-district in net, for example the time of transmitting downstream guide time slot is identical.When the radio frequency among Fig. 1 zooms out distance long (for example L is that hundreds of rice is to several kilometers), because the propagation delay time of electric wave on transmission line adds the conversion time delay (this conversion time delay can be measured by conventional method) in the far end radio frequency transceiver and will reach number or tens of microseconds, the whole network is synchronously with destroyed, interference will be compared seriously in the system, so that cisco unity malfunction.On the other hand, system is to carry out in base station (as 100 among Fig. 1) to the measurement of user and base station distance, promptly is to finish by the emission lead of measuring the user.That is to say, the time delay (promptly apart from) that measured this moment except that electric wave the time delay (needed numerical value) that the propagation distance (d among Fig. 1) in space is caused, having comprised that also the propagation delay time of electric wave on transmission line adds the conversion time delay in the far end radio frequency transceiver, will be wrong result.In the system that has used smart antenna,, then will cause complete unacceptable mistake as carrying out the user location with the estimation of user location again.
For FDD system (as WCDMA),, must measure the relative distance of user and base station for realizing the user location.Because system is to carry out in base station (as 100 among Fig. 1) to the range measurement between user and base station, therefore zoom out the increase of distance along with radio frequency, can because of occur with above-mentioned TDD system in same situation obtain wrong range data.
Summary of the invention
Be about to problem commercial on a large scale and that faced at 3-G (Generation Three mobile communication system) (as WCDMA and TD-SCDMA etc.), on above-mentioned basis of realizing " radio frequency zooms out " technology with the intermediate frequency transmission means, the present invention will propose a kind of timing between base station and the far end radio frequency headend equipment subsystem and method of timing alignment of solving.On this basis, it is synchronous to obtain whole network; And/or realize user terminal location is calibrated and obtained user terminal location accurately, thereby make the radio frequency remote technology more perfect.
As above-mentioned, the timing of base station radio frequency remoter of the present invention and the method for timing alignment be with before this realize " radio frequency zooms out " technology based on the intermediate frequency transmission means, soon the radio-frequency (RF) transceiver in the wireless base station is separated with the baseband digital signal processing section of wireless base station, the far end radio frequency transceiver is zoomed out near antenna, by simulation and/or digital intermediate frequency transmission technology, wiredly be connected with the wireless base station with wireless transmission means with various.Immediate frequency cable, microwave relay unit that said connection transmission medium can be a transmitted in both directions, and optical fiber etc.The timing of base station radio frequency remoter of the present invention and the method for timing alignment, be in the communication system of this kind form, between the antennal interface of the baseband digital signal processing section of base station and far-end analog radio frequency transceiver front-end equipment, be respectively arranged with the interface unit of corresponding matching, when making it in running order, a test signal is sent to far-end analog radio frequency transceiver front-end equipment in baseband digital signal processing section by the base station, and reception is through the inverse signal of far-end analog radio frequency transceiver front-end equipment emission, obtain transmission overall delay value on whole transmitting-receiving loop by comparison to the signal that transmitted and received, with the conversion time delay of analog radio frequency transceiver front-end equipment and wireless base station device jointly as base station and the timing of analog radio frequency transceiver front-end equipment room and the lead of timing alignment.
What the baseband digital signal processing section of above-mentioned said base station transmitted and received is the identical short pulse signal of frequency, also can be the short pulse signal of different frequency.For example, for the TDD system, reception and emission can be used the short pulse signal of same frequency, thereby need not to dispose as special adjunct circuit structures such as coupling circuits again, only need the suitable launching electrical level of control to get final product.Open receiver when the transmitted pulse signal simultaneously the baseband digital signal processing section of base station, just can receive the time delay calibrating signal of returning from antenna port reflects, reception baseband digital signal treatment circuit through the base station just can detect this received signal with respect to the time delay between transmitting, and finishes this time delay and measures.For the FDD system, then because receive and the frequency of emission inequality, and receive and different antennas is used in emission usually, thereby just need configuration or use a corresponding coupling circuit, the coupling that will a transmit part is come out, and through after the frequency conversion transmission carrier frequency is changed into the reception carrier frequency.The time also open this coupling circuit carrying out the time delay calibration, carry out the time delay calibration with the method identical then with above-mentioned TDD system.
Above-mentioned time delay calibrating method of the present invention can be used to realize the synchronous of TDD system whole-network.Adopt aforesaid way of the present invention to the base station baseband digital signal processor with and the far-end analog radio frequency transceiver front-end equipment that is connected of dual-mode antenna between reception and after emission carries out timing alignment, no matter far-end analog radio frequency transceiver front-end equipment zoom out distance have much, all can realize easily whole network synchronously.For example, the timing alignment lead can be determined by the time delay calibration measurement of whole transmitting-receiving loop transmission overall delay value 1/2, with the conversion time delay sum of relevant device in the base station and far-end analogue device switch jointly as the lead of system's timing alignment, and make the base station when the emission data, carry previous lead than the synchronous needed time of signal space, make the base station receive data simultaneously then than Timing Advance of the needed time delay of spatial synchronization, the sequential that is the far end radio frequency transceiver has different sequential with the base station baseband Digital Signal Processing, though then when using the radio frequency remote technology with which kind of transmission technology and zoom out distance, can both realize strictly guaranteeing that the whole network is synchronous.
The above-mentioned time delay calibrating method of the present invention equally also can be used for realizing user terminal location is calibrated, to obtain user terminal location location accurately.For example, after having realized that the whole network is synchronously, the user terminal location that the TD-SCDMA system obtains with conventional method just is interpreted as the position of far end radio frequency transceiver relatively therewith, suitable geographical position conversion, and meter can obtain the accurate location of user terminal.
Below, foregoing of the present invention is described in further detail again by embodiment by the accompanying drawing illustrated embodiment.
Description of drawings
Fig. 1 is to use the schematic diagram of annexation between the wireless base station of radio frequency remote technology and far end radio frequency transceiver.
Fig. 2 is to the localization method schematic diagram of user terminal in present wireless communication system.
Fig. 3 is the timing during base station radio frequency remoter and the schematic diagram of timing calibration method among the present invention
Fig. 4 is timing of the present invention and timing calibration method are realized synchronization timing in the TDD system a schematic diagram.
Embodiment
Annexation between the wireless base station of illustrated in figures 1 and 2 is respectively foregoing use radio frequency remote technology and far end radio frequency transceiver, and in wireless communication system at present to the localization method of user terminal.
Shown in Figure 3 is the timing of base station radio frequency remoter of the present invention and the method signal of timing alignment.The wireless base station main equipment 300 that contains the baseband digital signal processing section among the figure partly separates at analog intermediate frequency with near the far-end analog radio frequency transceiver front-end equipment 380 that is positioned at the dual-mode antenna.Base station body equipment 300 has interface circuit 310, provides with being connected of far end radio frequency transceiver 380, transmitting baseband digital signal processing circuit 320 and receives baseband digital signal treatment circuit 330.Include corresponding interface circuits 368 in the radio-frequency (RF) transceiver 380 of far-end, radio frequency sending set 362, radio-frequency transmitter 365 and be connected to the duplexer 363 of antenna port 370.Then connect between far end radio frequency transceiver 380 and the indoor base station 300 by a pair of reversible link 343 and 345, its transmission line can be immediate frequency cable, optical fiber, also can be wireless mode, as microwave, the transmission direction of signal is shown in arrow among the figure: a circuit transmits base station transmit signals to the far end radio frequency transceiver; Then that the far end radio frequency transceiver is the received signal of another circuit transmits to the base station.
Be in base station body equipment 300 being had include in the radio-frequency (RF) transceiver 380 of interface circuit 310 and far-end corresponding interface circuits 368 to be unlocked and receive and emission simultaneously during operating state, a baseband digital signal processing section short pulse signal of emission or one section known short code signal by the base station, open radio frequency sending set and radio-frequency transmitter simultaneously, receiving the short pulse signal that the baseband digital signal processing section receives above-mentioned emission, the transmission overall delay of picked up signal on whole transmitting-receiving loop by comparison process, and can think that the time delay of reception and emission equates, all be half of above-mentioned overall delay, use for the calibration of the time delay behind the base station radio frequency remoter.
For the TDD system, above-mentioned duplexer 363 can be a radio-frequency (RF) switch, also can be a circulator.Owing to receive identical with the frequency of emission, so coupling circuit that need not be special and only need control suitable launching electrical level, when emission, receiver is opened, receiver just can receive transmitting of time delay calibration, reception baseband digital signal treatment circuit 330 in the base station just can detect this received signal with respect to the time delay between transmitting, and finishes this time delay and measures.For the FDD system, then because the frequency of reception and emission is inequality, and do not use duplexer usually, use different antennas but receive with emission.Like this, just must use a coupling circuit, the coupling that will a transmit part is come out, and through frequency conversion, transmission carrier frequency is changed into the reception carrier frequency.The time open this coupling circuit carrying out the time delay calibration, use then with the same way as of above-mentioned TDD system and carry out the time delay calibration.
Shown in Figure 4 is in above-mentioned TDD (TD-SCDMA) system, measures the reception and the emission of the time delay calibration value pair far end radio frequency transceiver that is connected with antenna of acquisition with the present invention and regularly calibrates, to obtain the timing relationship principle of whole network synchronous working.Tf among the figure is the TDD cycle, and during Txa was base station, Td was a Timing Advance, and the radio frequency that is obtained by aforementioned time delay calibrating method test zooms out the back signal in delivering path and time delay that conversion produced exactly; Among the figure, 401 expression base stations are to the sequential of far end radio frequency transceiver transmitting-receiving conversion, 402 expression the whole networks are realized the synchronous sequential of TDD transmitting-receiving in the space, 403 sequential for base station baseband emission Digital Signal Processing, and 404 sequential for the processing of base station baseband receiving digital signals.By traditional method, above sequential should be essentially identical, zooms out distance when big at radio frequency, and system can't realize synchronously.The present invention then is the Timing Advance Td that obtains according to the time delay calibration measurement, and sends control timing 401 according to this lead by the base station, and it must be than the synchronous needed time (sequential 402) is carried previous Timing Advance Tad fully.Realize synchronous (sequential 402) of TDD transmitting-receiving conversion in the space to guarantee the whole network.In addition, base station data (403) are carried previous lead Td than the needed time of spatial synchronization, and the base station receives data (404) than time T d of the needed time delay of spatial synchronization.Like this, the sequential of the sequential of far end radio frequency transceiver and base station baseband Digital Signal Processing is different, thereby no matter when using the radio frequency remote technology with which kind of transmission technology and the distance that zooms out, all strictly guaranteed the synchronous of the whole network.
Utilize the time delay calibration value of the acquisition of said method, also can calibrate, thereby can obtain the position of user terminal accurately the user terminal location that the traditional user terminal localization method of aforementioned employing obtains.For the TDD system, owing to calibrate for obtaining the synchronous time delay of carrying out of the whole network by above-mentioned, so what obtain when range measurement is that user terminal is apart from the distance between the far end radio frequency transceiver (antenna), so only need be with known the geographical position ((x among Fig. 1 of this far end radio frequency transceiver (antenna), y, z)) be initial point, directly use traditional method to position.And for the FDD system, when user terminal is located, then need after carrying out said latency measurement between the baseband digital signal processing section of wireless base station and user terminal, in each sub-district (far end radio frequency transceiver and antenna), also need also to carry out in the same way latency measurement, the user terminal distance that is obtained by this measurement deducts above-mentioned baseband digital signal processing section and the corresponding distance of this corresponding far-end analog radio frequency transceiver front-end equipment room latency measurement value, thereby can obtain the accurate distance of user terminal apart from this far end radio frequency transceiver (antenna).After carrying out this calibration, just can obtain the accurate position of user terminal with respect to these several adjacent distal end radio-frequency (RF) transceiver (antenna).
The method that is appreciated that the timing of above-mentioned base station radio frequency remoter of the present invention and timing alignment thus has been effectively and when having solved the use radio frequency satisfactorily and having zoomed out, the latency measurement problem that causes in zooming out transmission and change-over circuit.And can further thoroughly solve the whole network stationary problem when using the radio frequency remote technology as the TDD system, make and zoom out distance and no longer be restricted, and solved and obtain the problem of user terminal location accurately in the radio frequency remote technology.
Can clearer understanding be arranged to the present invention by the above embodiments, but these embodiment should be interpreted as it is restriction subject area of the present invention.Not breaking away from and changing under the above-mentioned technological thought situation of the present invention,, obviously can also make the replacement or the change of various ways, and all should comprise within the scope of the present invention according to the ordinary skill knowledge and/or the customary means of this area.
Claims (8)
1. the method for the timing of base station radio frequency remoter and timing alignment, it is characterized in that partly separately and the wireless base station that connects of the wired and/or wireless two-way transmission means through being provided with therebetween and be arranged near the communication system of the far-end analog radio frequency transceiver front-end equipment the dual-mode antenna by analog intermediate frequency, between the antennal interface of the baseband digital signal processing section of base station and far-end analog radio frequency transceiver front-end equipment, be respectively arranged with the interface unit of corresponding matching, when making it in running order, a test signal is sent to far-end analog radio frequency transceiver front-end equipment in baseband digital signal processing section by the base station, and reception is through the inverse signal of far-end analog radio frequency transceiver front-end equipment emission, obtain transmission overall delay value on whole transmitting-receiving loop by comparison to the signal that transmitted and received, with the conversion time delay of analog radio frequency transceiver front-end equipment and wireless base station device jointly as base station and the timing of analog radio frequency transceiver front-end equipment room and the lead of timing alignment.
2. the method for the timing of base station radio frequency remoter as claimed in claim 1 and timing alignment, the lead (Tad) that it is characterized in that said timing alignment are by the time delay calibration measurement (Td) of said whole transmitting-receiving loop transmission overall delay value 1/2 and conversion time delay (Tb) sum of analogue device switch.
3. the method for the timing of base station radio frequency remoter as claimed in claim 1 and timing alignment is characterized in that said test signal is a short pulse signal, or one section known short code signal.
4. the method for the timing of base station radio frequency remoter as claimed in claim 3 and timing alignment is characterized in that the short pulse signal that the baseband digital signal processing section of said base station transmits and receives is the identical short pulse signal of frequency.
5. the method for the timing of base station radio frequency remoter as claimed in claim 3 and timing alignment, it is characterized in that the short pulse signal that the baseband digital signal processing section of said base station transmits and receives is the short pulse signal of different frequency, in the baseband digital signal processing section of base station, be provided with and be used for coupling circuit that the pulse signal that receives with emission is compared.
6. realize the synchronous purposes of whole network with the timing of the base station radio frequency remoter of claim 1 and the method for timing alignment.
7. realize user terminal location is calibrated with the timing of the base station radio frequency remoter of claim 1 and the method for timing alignment, to obtain the purposes of user terminal location accurately.
8. acquisition as claimed in claim 7 is the purposes of user terminal location accurately, it is characterized in that carrying out the latency measurement of same form between the baseband digital signal processing section of wireless base station and user terminal, and deduct above-mentioned baseband digital signal processing section and the corresponding distance of this corresponding far-end analog radio frequency transceiver front-end equipment room latency measurement value, the accurate orientation distance between acquisition user terminal and this far-end analog radio frequency transceiver front-end equipment or antenna by the user terminal distance that this measurement obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510021957 CN1753329A (en) | 2005-10-28 | 2005-10-28 | Method of timing and timing calibration of base station radio frequency remoter and its use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510021957 CN1753329A (en) | 2005-10-28 | 2005-10-28 | Method of timing and timing calibration of base station radio frequency remoter and its use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1753329A true CN1753329A (en) | 2006-03-29 |
Family
ID=36680033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510021957 Pending CN1753329A (en) | 2005-10-28 | 2005-10-28 | Method of timing and timing calibration of base station radio frequency remoter and its use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1753329A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101080031B (en) * | 2006-05-26 | 2011-02-02 | 大唐移动通信设备有限公司 | Intelligent antenna calibration system based on base band remote push technology and its method |
| CN101183898B (en) * | 2007-12-27 | 2011-05-25 | 中兴通讯股份有限公司 | System, method and device for implementing synchronization of micromicro honeycomb base station |
| CN102118191A (en) * | 2010-01-06 | 2011-07-06 | 华为技术有限公司 | Method, equipment and system for transmitting common public radio interface data |
| CN101330701B (en) * | 2007-06-19 | 2011-09-21 | 中兴通讯股份有限公司 | Method and system for off-lining debugging and measuring GSM radio frequency far-pulling system |
| CN101473686B (en) * | 2006-05-05 | 2012-01-04 | T-移动国际股份两合公司 | Method for reducing the delay time by a paging procedure in network-initiated data transmission in GPRS-mobile communication networks |
| CN101383647B (en) * | 2007-09-06 | 2012-01-11 | 电信科学技术研究院 | Method and device for calibrating operation antenna |
| CN101137137B (en) * | 2007-10-16 | 2012-11-14 | 成都芯通科技股份有限公司 | TD-SCDMA base station microwave extension integrated receiver/transmitter |
| CN101304344B (en) * | 2008-06-02 | 2013-03-27 | 工业和信息化部通信计量中心 | Apparatus and method for calibrating time delay of network performance tester |
| CN101540626B (en) * | 2008-03-20 | 2013-06-05 | 中兴通讯股份有限公司 | Transreceiver and zero intermediate frequency emission calibrating method |
| CN101546868B (en) * | 2008-03-27 | 2013-07-10 | 成都芯通科技股份有限公司 | Novel intelligent antenna and method for realizing same |
| CN102045837B (en) * | 2009-10-20 | 2013-11-06 | 华为技术有限公司 | Mobile node positioning method and device |
| CN107087302A (en) * | 2017-05-16 | 2017-08-22 | 北京望远传媒有限公司 | A kind of method of locating terminal and device |
| CN109765597A (en) * | 2019-03-01 | 2019-05-17 | 广州达安临床检验中心有限公司 | Medicine cold chain localization method, device, equipment and storage medium |
| CN110212974A (en) * | 2013-02-22 | 2019-09-06 | Adc电信股份有限公司 | From the primary standard of the base station network interface of distributing antenna system |
| CN114915980A (en) * | 2021-02-10 | 2022-08-16 | 中国移动通信集团广东有限公司 | 5G indoor multi-channel base station signal coverage method based on wireless frequency conversion |
-
2005
- 2005-10-28 CN CN 200510021957 patent/CN1753329A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101473686B (en) * | 2006-05-05 | 2012-01-04 | T-移动国际股份两合公司 | Method for reducing the delay time by a paging procedure in network-initiated data transmission in GPRS-mobile communication networks |
| CN101080031B (en) * | 2006-05-26 | 2011-02-02 | 大唐移动通信设备有限公司 | Intelligent antenna calibration system based on base band remote push technology and its method |
| CN101330701B (en) * | 2007-06-19 | 2011-09-21 | 中兴通讯股份有限公司 | Method and system for off-lining debugging and measuring GSM radio frequency far-pulling system |
| CN101383647B (en) * | 2007-09-06 | 2012-01-11 | 电信科学技术研究院 | Method and device for calibrating operation antenna |
| CN101137137B (en) * | 2007-10-16 | 2012-11-14 | 成都芯通科技股份有限公司 | TD-SCDMA base station microwave extension integrated receiver/transmitter |
| CN101183898B (en) * | 2007-12-27 | 2011-05-25 | 中兴通讯股份有限公司 | System, method and device for implementing synchronization of micromicro honeycomb base station |
| CN101540626B (en) * | 2008-03-20 | 2013-06-05 | 中兴通讯股份有限公司 | Transreceiver and zero intermediate frequency emission calibrating method |
| CN101546868B (en) * | 2008-03-27 | 2013-07-10 | 成都芯通科技股份有限公司 | Novel intelligent antenna and method for realizing same |
| CN101304344B (en) * | 2008-06-02 | 2013-03-27 | 工业和信息化部通信计量中心 | Apparatus and method for calibrating time delay of network performance tester |
| CN102045837B (en) * | 2009-10-20 | 2013-11-06 | 华为技术有限公司 | Mobile node positioning method and device |
| CN102118191A (en) * | 2010-01-06 | 2011-07-06 | 华为技术有限公司 | Method, equipment and system for transmitting common public radio interface data |
| CN102118191B (en) * | 2010-01-06 | 2014-01-08 | 华为技术有限公司 | Method, equipment and system for transmitting common public radio interface data |
| CN110212974A (en) * | 2013-02-22 | 2019-09-06 | Adc电信股份有限公司 | From the primary standard of the base station network interface of distributing antenna system |
| US11329701B2 (en) | 2013-02-22 | 2022-05-10 | Commscope Technologies Llc | Master reference for base station network interface sourced from distributed antenna system |
| CN110212974B (en) * | 2013-02-22 | 2022-10-04 | Adc电信股份有限公司 | Master reference for a base station network interface from a distributed antenna system |
| CN107087302A (en) * | 2017-05-16 | 2017-08-22 | 北京望远传媒有限公司 | A kind of method of locating terminal and device |
| CN109765597A (en) * | 2019-03-01 | 2019-05-17 | 广州达安临床检验中心有限公司 | Medicine cold chain localization method, device, equipment and storage medium |
| CN114915980A (en) * | 2021-02-10 | 2022-08-16 | 中国移动通信集团广东有限公司 | 5G indoor multi-channel base station signal coverage method based on wireless frequency conversion |
| CN114915980B (en) * | 2021-02-10 | 2023-08-01 | 中国移动通信集团广东有限公司 | 5G indoor multipath base station signal coverage method based on wireless frequency conversion |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1753329A (en) | Method of timing and timing calibration of base station radio frequency remoter and its use | |
| CN1100463C (en) | Antenna and feeder cable tester | |
| KR100655767B1 (en) | Method for calibrating smart antenna array in real time | |
| CN102325339B (en) | Standing wave detection method and device and radio remote unit | |
| CN1913402B (en) | Intelligent method for detecting antenna fault | |
| CN101916919B (en) | Method of calibrating an active antenna and active antenna | |
| CN102280719B (en) | Launch phase real-time calibrating device and method based on four unit directional antennas | |
| TW200516889A (en) | Antenna steering for an access point based upon probe signals | |
| CN107959515B (en) | Method and device for measuring noise power of multiple antennas | |
| CN105467371A (en) | Amplitude phase calibrating device for semi-closed loop coupled phased array channels | |
| CN102014415A (en) | Method for detecting base station feed system on line, base station system and antenna suite | |
| KR101763326B1 (en) | Apparatus and Method for Measuring Multiple Link Wireless Channel | |
| CN103188022A (en) | Antenna correlation testing method and system | |
| CN102571175B (en) | Active antenna and signal processing method thereof | |
| EP2173005B1 (en) | Improved probe calibration for an active antenna | |
| CN102221816A (en) | Satellite time serving all-in-one machine and time serving method thereof | |
| CN201654495U (en) | Satellite time transfer integrative machine | |
| CN108513692A (en) | A kind of rf control system and control method | |
| CN114424505B (en) | Line sequence detection method and detection system | |
| CN101546868B (en) | Novel intelligent antenna and method for realizing same | |
| CN110646778A (en) | Time difference of flight acquisition system and method | |
| CN112235028B (en) | CSI automatic accurate calibration system for commercial WiFi signals | |
| CN108574496A (en) | Track communication base station antenna system | |
| CN102595447B (en) | Method and device for wireless measuring sensitivity of base station | |
| CN216718667U (en) | High-precision PDOA positioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |