CN102387522B - The modification method of Remote Radio Unit Power control model and device, checkout equipment - Google Patents
The modification method of Remote Radio Unit Power control model and device, checkout equipment Download PDFInfo
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- CN102387522B CN102387522B CN201010273914.7A CN201010273914A CN102387522B CN 102387522 B CN102387522 B CN 102387522B CN 201010273914 A CN201010273914 A CN 201010273914A CN 102387522 B CN102387522 B CN 102387522B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
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Abstract
The invention discloses a kind of modification method and device, checkout equipment of Remote Radio Unit Power control model.Wherein, the method comprises: the power of the radiofrequency signal of being launched by the RRU adopting the measurement of suction-type power detection mode to obtain and the base band power obtained according to the current received orthogonal data in the same way of RRU, obtain the power gain value of transmission channel; Use the transmission channel gain of power gain value modified R RU Power control model; According to revised transmission channel gain, the sense channel gain of modified R RU Power control model and receive path gain.By the present invention, the gain characteristic of the reaction channel that RRU Power control model can be made correct, the stability of the RRU power of guarantee.
Description
Technical field
The present invention relates to the communications field, in particular to modification method and device, the checkout equipment of a kind of Remote Radio Unit (RadioRemoteUnit, referred to as RRU) Power control model.
Background technology
The coverage of the base station (NodeB) at its place of power decision of Remote Radio Unit and signal quality, in order to ensure that the signal quality of NodeB needs the power of radio frequency extension unit effectively to control.At present, mostly power control scheme is that employing arranges power coupling circuit near antenna opening, is indirectly reacted the change of antenna opening power, then adopt the method for close-loop power control to reach the effect of antenna opening power stability by coupled signal.Sense channel multiplex technique based on receive path can realize controlling the power of transmission channel by the mode of time division multiplexing receive path.
The prerequisite realizing close-loop power control is the gain characteristic by the correct reflection radio-frequency channel of channel gain model, then by regulating adjustable gain, ensures the stable of radio-frequency channel, and then ensures the stable of antenna opening power.Channel gain model is the vector of the gain of each device on radio-frequency channel, in order to finally ensure the gain of radio-frequency channel, needs to calibrate whole piece radio-frequency channel.At present, channel gain model is when Remote Radio Unit is produced, need the gain adopting multi-pointers meter (such as, spectrum detector etc.) to detect transmission channel and sense channel to obtain the gain characteristic of transmission channel and sense channel, whole piece radio-frequency channel is calibrated.Use in reality and carry out power control by middle according to this channel gain model.
But, in actual applications, the gain characteristic of transmission channel and sense channel can change in time, thus causes the calibration results when producing correctly can not react current channel gain characteristic, and then causes the badly result such as the abnormal and false-alarm of the power of Remote Radio Unit.Further, cannot repair because transmission channel and sense channel fault are difficult to distinguish.
Summary of the invention
Main purpose of the present invention is the modification method and device, the checkout gear that provide a kind of RRU Power control model, can change in time at least to solve the above-mentioned gain characteristic due to transmission channel and sense channel and causes the problems such as the abnormal and false-alarm of the power of RRU.
According to an aspect of the present invention, provide a kind of modification method of RRU Power control model, comprise: the power of the radiofrequency signal of being launched by the RRU adopting the measurement of suction-type power detection mode to obtain and the base band power obtained according to the current received orthogonal data in the same way of RRU, obtain the power gain value of transmission channel; Use the transmission channel gain of power gain value modified R RU Power control model; According to revised transmission channel gain, the sense channel gain of modified R RU Power control model and receive path gain.
According to a further aspect in the invention, provide a kind of checkout equipment, comprising: power meter module, the power of the radiofrequency signal that the RRU obtained for adopting the measurement of suction-type power detection mode launches; Communication module, is connected with described RRU by interface, for receiving the current received I/Q data from baseband pool unit of described RRU that described RRU transmits; Control module, for calculating base band power from described I/Q data, and according to the power that described base band power and the measurement of described power meter module obtain, obtains the power gain value of transmission channel.
According to a further aspect of the invention, provide another kind of checkout equipment, comprising: power meter module, the power of the radiofrequency signal that the RRU obtained for adopting the measurement of suction-type power detection mode launches; Judge module, for judging whether the power that described power meter module measures reaches predetermined power, if so, then triggers communication module; Described communication module, is connected with described RRU by interface, for sending notice to described RRU, notifies that the power that described power meter module measures has reached described predetermined power.
According to a further aspect of the invention, provide a kind of correcting device of RRU Power control model, comprise: computing module, the power of the radiofrequency signal of launching for the RRU by adopting the measurement of suction-type power detection mode to obtain and the base band power obtained according to the current received orthogonal data in the same way of RRU, obtain the power gain value of transmission channel; First correcting module, for using the transmission channel gain of described power gain value modified R RU Power control model; Second modified module, for according to revised described transmission channel gain, revises sense channel gain and the receive path gain of described RRU Power control model.
Pass through the present invention, power and the base band power calculated by I/Q data of the radiofrequency signal that the RRU obtained by Measurement accuracy is launched, the power gain value of transmission channel can be obtained, thus can revise the transmission channel gain of RRU Power control model, and then can revise sense channel and receive path, thus make the gain characteristic of the reaction channel that RRU Power control model can be correct, the stability of the RRU power of guarantee.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the checkout equipment according to the embodiment of the present invention one;
Fig. 2 is the structural representation of the checkout equipment according to the embodiment of the present invention two;
Fig. 3 is the structural representation of the correcting device of RRU Power control model according to the embodiment of the present invention three;
Fig. 4 is the flow chart of the modification method of RRU Power control model according to the embodiment of the present invention four;
Fig. 5 is the correction flow chart of the RRU Power control model according to the embodiment of the present invention five;
Fig. 6 is according to the mutual schematic diagram in the embodiment of the present invention five between checkout equipment, RRU and BBU;
Fig. 7 is the correction flow chart of the RRU Power control model according to the embodiment of the present invention six.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Embodiment one
Fig. 1 is the structural representation according to embodiment of the present invention checkout equipment, and as shown in Figure 1, this checkout equipment comprises: power meter module 10, communication module 12 and control module 14.
Wherein, power meter module 10, the power of the radiofrequency signal that the RRU obtained for adopting the measurement of suction-type power detection mode launches, namely calculates RRU antenna opening power; The groundwork of power meter module 10 is that foundation/corrections that the radiofrequency signal exported RRU is measured as follow-up RRU power control gain model accurately provides reference accurately, and the size of the power signal collected is notified control module 14 by internal interface accurately.
Such as, power meter module 10 can adopt digital-to-analogue conversion (Analog-DigitalConversion, referred to as ADC) mode of sampling measures the power of the radiofrequency signal that RRU exports, or, also microwave detector can be set in power meter module 10, be measured the power of the radiofrequency signal that RRU exports by microwave detector.If adopt the mode of ADC sampling to measure, because TD-SCDMA requires strict clock synchronous, therefore, need in power meter module 10 that configurable clock generator synchronization module is (such as, GPS module) realize the clock synchronous of checkout equipment and tested RRU, thus the performance number of antenna opening can be calculated accurately.
Communication module 12, is connected with RRU by interface, the I/Q data of the current received baseband pool unit of this RRU for receiving RRU transmission.
Such as, communication module 12 can adopt but be not limited to network interface or serial ports and RRU communication, and concrete interface mode can be determined according to the external interface pattern of connected RRU unit.In the present embodiment, checkout equipment can provide abundant external interface to meet the RRU communication with variety classes producer.
The major function of communication module 12 has been the communication work between control module 14 and RRU.Wherein, the main contents of communication transfer comprise control information and data message, wherein data message comprises the orthogonal in the same way (In-phase/Quadrature of the baseband pool unit (BBU) that current RRU receives, referred to as I/Q) data (also can be called base band data, these data send to checkout equipment by RRU side).Because RRU is when transmitting, RRU baseband signal is by field programmable gate array (FieldProgrammableGateArray, referred to as FPGA) deliver in pre-distortion module, pre-distortion module completes Digital Up Convert (DigitalUp-Conversion, referred to as DUC), peak clipping (Crest-FactorReduction, referred to as CFR) and the function of digital pre-distortion (DPD), and give digital to analog converter (DAC) by the I/Q data after up-conversion, digital to analog converter (DAC) carries out digital-to-analogue conversion and sends analog if signal, this signal is sent to antenna opening through power amplifier again.Therefore, after checkout equipment obtains by communication module 12 the I/Q data that RRU receives, anti-solution the power of RRU emitting radio frequency signal can be obtained.Wherein, communication module 12 can notify RRU by control signal, makes RRU that the I/Q data got from BBU side is transmitted to checkout equipment.Control signal mainly comprises the control information (mailing to RRU side by this equipment) to variable gain on passage.
Control module 14, for calculating base band power from I/Q data, and according to the power that base band power and the measurement of power meter module obtain, obtain the power gain value of transmission channel, this power gain value is sent to RRU by communication module 12, and RRU uses the transmission channel gain of this power gain value modified R RU Power control model.
In embodiments of the present invention, the transmitting-receiving that control module 14 mainly completes control signal controls, using the antenna opening power that calculates from the power meter module 10 output power as transmission channel, the base band power I/Q data got from communication module 12 calculated, as the input power of transmission channel, draws the power gain value of down going channel (i.e. transmission channel) by above-mentioned two power calculation.
This power gain value, after obtaining the power gain value of transmission channel, can be sent to RRU by control module 14, is revised the RRU Power control model preserved BBU side, also can directly be transferred to BBU side by RRU, revises the RRU Power control model that BBU side is preserved.In the process setting up community, enable new RRU Power control model, thus reach the repair to original power gain problem.
According to the above-mentioned checkout equipment that the embodiment of the present invention provides, the power of the radiofrequency signal that can be exported by Measurement accuracy RRU and RRU use power when exporting radiofrequency signal, the power gain of transmission channel is revised, thus can realize locating fast the power problem of RRU.
Embodiment two
Fig. 2 is the structural representation of the checkout equipment according to the embodiment of the present invention two, be with the difference of embodiment one, in embodiments of the present invention, checkout equipment does not calculate base band power during RRU output radiofrequency signal, but when the power measured reaches predetermined power value, notice RRU, is calculated the power gain of transmission channel by RRU.As shown in Figure 2, this checkout equipment mainly comprises: power meter module 20, judge module 22 and communication module 24.Wherein, similar to embodiment one, the power of the radiofrequency signal that power meter module 20 is launched for the RRU adopting the measurement of suction-type power detection mode and obtain; Whether judge module 22 reaches predetermined power for the power judging described power meter module and measure, and if so, then triggers communication module 24; Communication module 24 is connected with RRU by interface, and for sending notice to RRU, the power that notice power meter module 20 measures reaches predetermined power.In embodiments of the present invention, communication module 24 is similar to embodiment one, can through but not limited to network interface or serial ports and RRU communication.
In embodiments of the present invention, RRU can adjust the gain of downlink passage with minimum step value, until receive the above-mentioned notice of communication module 24 transmission.
Wherein, above-mentioned predetermined power can be the nominal power of checkout equipment, and, its nominal power can be sent to RRU by communication module 24 by checkout equipment, RRU, when the performance number knowing that power meter module 20 is measured reaches this nominal power, can calculate the power gain of transmission channel, such as according to the current base band power transmitting employing, the base band data that RRU can be issued by buffer memory BBU, this base band data according to buffer memory converts out corresponding base band power.Thus the transmission channel gain of the RRU Power control model that BBU side is preserved can be revised.And the power gain that RRU calculates sense channel and receive path can be triggered further.
Embodiment three
Fig. 3 is the structural representation of the correcting device of RRU Power control model according to the embodiment of the present invention, and as shown in Figure 3, this device mainly comprises: computing module 30, first correcting module 32 and the second modified module 34.Wherein, computing module 30, the power of the radiofrequency signal of launching for the RRU by adopting the measurement of suction-type power detection mode to obtain and the base band power obtained according to current received orthogonal in the same way (I/Q) data of RRU, obtain the power gain value of transmission channel; First correcting module 32, for using the transmission channel gain of this power gain value modified R RU Power control model; Second modified module 34, for according to revised transmission channel gain, the sense channel gain of modified R RU Power control model and receive path gain.
Wherein, the computing module 30 of the embodiment of the present invention can adopt the checkout equipment of above-described embodiment one to realize, or, computing module 30 also can adopt the checkout equipment of above-described embodiment two to combine realization with RRU, namely the antenna opening power of RRU is measured by the checkout equipment described in embodiment, when this power arrives predetermined power value, checkout equipment notice RRU, RRU is after receiving notice, according to this predetermined power value and the current base band power value used that transmits of RRU, the power gain value of transmission channel can be obtained.
Wherein, the power gain value correction BBU side of the first correcting module 32 transmission channel that computing module 30 can be made the to obtain transmission channel gain of RRU Power control model of preserving.And the second correcting module 34 can be revised sense channel gain and receive path gain according to the method described in following embodiment.
By in the embodiment of the present invention, when RRU uses, quick position can be carried out to the power problem of RRU, thus ensure the stability of RRU power.
Embodiment four
Fig. 4 is the flow chart of the modification method of RRU Power control model according to the embodiment of the present invention four, and as shown in Figure 4, the method mainly comprises the following steps:
Step S402, the power of the radiofrequency signal of being launched by the RRU adopting the measurement of suction-type power detection mode to obtain and the base band power obtained according to the current received I/Q data of RRU, obtain the power gain value of transmission channel;
Such as, the checkout equipment provided by the embodiment of the present invention two adopts suction-type power detection mode to measure the power of the radiofrequency signal that RRU launches, when the performance number measured reaches predetermined power (such as, the nominal power of checkout equipment) time, checkout equipment sends notice to described RRU, after RRU receives notice, the I/Q data of RRU are handed down to according to BBU, calculate base band power, then, RRU is using the output power of above-mentioned predetermined power as transmission channel, using the input power of this base band power as transmission channel, calculate the power gain value of transmission channel.
Or, the checkout equipment provided by the embodiment of the present invention one adopts suction-type power detection mode to measure the power of the radiofrequency signal that RRU exports, and receive the I/Q data of RRU transmission, wherein, these I/Q data are the I/Q data that RRU is currently received, then checkout equipment calculates base band power according to these I/O data, finally, the power that measurement obtains by checkout equipment is as the output power of transmission channel, using the input power of base band power as transmission channel, calculate the power gain value of transmission channel.
Wherein, external interface (such as, network interface or serial ports) can be passed through between RRU and checkout equipment and carry out communication.
Wherein, checkout equipment can measure the power of the radiofrequency signal that RRU launches by microwave detector; Or, the mode that also ADC can be adopted to sample measures the power of the radiofrequency signal that RRU launches, when adopting which to measure, in order to ensure the accuracy measured, before the power measuring the radiofrequency signal that RRU launches, it is synchronous with RRU that checkout equipment can also adjust its clock.
Step S404, uses the transmission channel gain of the power gain value modified R RU Power control model of transmission channel;
Step S406, according to revised transmission channel gain, the sense channel gain of modified R RU Power control model and receive path gain.
Such as, RRU loopback is emitted through and sense channel, detects the power of the radiofrequency signal that this sense channel receives, and obtains sense channel power; Then RRU is according to the I/Q data of current reception and transmission channel gain, obtains the input power of sense channel; Then RRU is using the output power of above-mentioned sense channel power as sense channel and receive path, obtains the power gain value of sense channel and receive path according to above-mentioned input power and output power; Finally, RRU uses sense channel gain and the receive path gain of the power gain value modified R RU Power control model of sense channel and receive path.
By the method that the embodiment of the present invention provides, can locate fast the power problem of RRU, ensure that the stability of the power of RRU.
Embodiment five
In embodiments of the present invention, during with line RRU, cause RRU Power control model to lose efficacy because channel gain changes, the checkout equipment using above-described embodiment two to provide is modified to example to RRU Power control model and is described.
Fig. 5 is the correction flow chart of the RRU Power control model according to the embodiment of the present invention, Fig. 6 is the mutual schematic diagram in the embodiment of the present invention between checkout equipment, RRU and BBU, as illustrated in Figures 5 and 6, in embodiments of the present invention, RRU Power control model revised mainly comprise the following steps:
Step S501, the radio frequency interface of the suction-type power meter of checkout equipment is connected to the antenna opening place of Remote Radio Unit by matched load, and use netting twine to be connected with Remote Radio Unit by checkout equipment, checkout equipment can identify the network interface IP address of Remote Radio Unit automatically, sets up socket communication;
Step S502, checkout equipment sends message to Remote Radio Unit, obtains the type of Remote Radio Unit;
Step S503, checkout equipment notice Remote Radio Unit enters gain calibration operating conditions, and informs the nominal power of Remote Radio Unit checkout equipment;
Step S504, Remote Radio Unit notice baseband pool unit (BasebandUnit, referred to as BBU) its state changes;
Step S505, baseband pool unit, after learning that Remote Radio Unit enters gain calibration state, issues base band data corresponding to calibration power to Remote Radio Unit;
Step S506, Remote Radio Unit is with the gain of the minimum step value of transmission channel gain adjustment downlink passage;
Step S507, Remote Radio Unit judges until the power meter module of checkout equipment detects whether its antenna opening power reaches the nominal power of gain-boosted op amp equipment, if so, then performs step S508, otherwise, return and perform step S506;
When checkout equipment finds to inform after the antenna opening power of Remote Radio Unit reaches the nominal power of setting themselves the nominal power sent to before its antenna opening power of Remote Radio Unit reaches;
Step S508, the software module of Remote Radio Unit can calculate the fixed gain of downlink passage and the fixed gain of sense channel again;
Step S509, Remote Radio Unit loopback transmission channel and sense channel, the signal produced by transmission channel, to the accounting that the gain of receive path is carried out again;
Step S510, the device number of revised downlink passage, sense channel and receive path gain binding Remote Radio Unit by IR protocol transparency message, is passed to baseband pool unit by Remote Radio Unit.
The Remote Radio Unit completing this gain-boosted op amp process will receive the channel gain of the process correction that baseband pool unit issues when reconfiguring community, and Remote Radio Unit is by the Power control model new according to command enable.Thus the Remote Radio Unit power abnormal problem that can effectively solve because time reason causes.
Embodiment six
In embodiments of the present invention, during with line RRU, cause RRU Power control model to lose efficacy because channel gain changes, the checkout equipment using above-described embodiment one to provide is modified to example to RRU Power control model and is described.
Fig. 7 is the correction flow chart of the RRU Power control model according to the embodiment of the present invention, as shown in Figure 7, mainly comprises the following steps:
Step S701, the radio frequency interface of the suction-type power meter of checkout equipment is connected to the antenna opening place of Remote Radio Unit by matched load, and use netting twine to be connected with Remote Radio Unit by checkout equipment, checkout equipment can identify the network interface IP address of Remote Radio Unit automatically, sets up socket communication;
Step S702, checkout equipment sends message to Remote Radio Unit, obtains the type of Remote Radio Unit;
Step S703, checkout equipment notice Remote Radio Unit enters gain calibration operating conditions, and informs the nominal power of Remote Radio Unit checkout equipment;
Step S704, Remote Radio Unit notice baseband pool unit (BasebandUnit, referred to as BBU) its state changes;
Step S705, baseband pool unit, after learning that Remote Radio Unit enters gain calibration state, issues base band data corresponding to calibration power to Remote Radio Unit;
Step S706, the power meter module of checkout equipment measures the antenna opening power of Remote Radio Unit;
Step S707, checkout equipment obtains the I/Q data that RRU is currently received, and calculates base band power from the I/Q data obtained;
Step S708, checkout equipment, according to measuring the antenna opening power obtained and the base band power calculated, calculates the power gain value of downlink passage;
Step S709, the power gain value of downlink passage is transferred to RRU by communication module by checkout equipment;
Step S710, Remote Radio Unit based on the power gain value of this downlink passage, Remote Radio Unit loopback transmission channel and sense channel, the signal produced by transmission channel, to the accounting that the gain of receive path is carried out again;
Step S711, the device number of revised downlink passage, sense channel and receive path gain binding Remote Radio Unit by IR protocol transparency message, is passed to baseband pool unit by Remote Radio Unit.
The Remote Radio Unit completing this gain-boosted op amp process will receive the channel gain of the process correction that baseband pool unit issues when reconfiguring community, and Remote Radio Unit is by the Power control model new according to command enable.Thus the Remote Radio Unit power abnormal problem that can effectively solve because time reason causes.
It should be noted that, although above-described embodiment is described with the example that is modified to of RRU Power control model, but be not limited to this, in actual applications, the technical scheme that the embodiment of the present invention also can be used to provide when producing, thus multi-pointers meter can be replaced in process of production to complete the work of passage calibration, save the service time of multi-pointers meter, for enterprise produces cost-saving.
From above description, can find out, in embodiments of the present invention, set up or modified R RU Power control model to the overall the way of restraint of the gain of antenna opening by the I/Q data source got from RRU side, for the transmission of RRU, reception and sense channel, be all as stable channel gain by the adjustable gain in the fixed gain of whole piece passage and passage.Thus transmittings can be completed when producing, detecting and the calibration work of receive path, in the saving unit interval, the service time of multi-pointers meter, enhances productivity.The power problem of radio frequency extension unit can locate fast in external field environment, and provide possibility for the quick reparation of RRU Power control model.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a modification method for radio frequency remote unit RRU Power control model, is characterized in that, comprising:
The power of the radiofrequency signal of being launched by the RRU adopting the measurement of suction-type power detection mode to obtain and the base band power obtained according to the current received orthogonal in the same way I/Q data of RRU, obtain the power gain value of transmission channel;
Use the transmission channel gain of described power gain value modified R RU Power control model;
According to revised described transmission channel gain, revise sense channel gain and the receive path gain of described RRU Power control model;
Wherein, according to revised described transmission channel gain, sense channel gain and the receive path gain of revising described RRU Power control model comprise: transmission channel and described sense channel described in described RRU loopback, detect the power of the radiofrequency signal that described sense channel receives, obtain sense channel power; Described RRU, according to the I/Q data of current reception and described transmission channel gain, obtains the input power of described sense channel; Described RRU, using the output power of described sense channel power as described sense channel and described receive path, obtains the power gain value of described sense channel and described receive path according to the input power of described sense channel and the output power of described sense channel and described receive path; The sense channel gain of RRU Power control model described in the power gain value correction that described RRU uses described sense channel and described receive path and receive path gain.
2. method according to claim 1, it is characterized in that, the power of the radiofrequency signal exported by the RRU adopting the measurement of suction-type power detection mode to obtain and the base band power obtained according to the current received I/Q data of RRU, the power gain value obtaining transmission channel comprises:
Checkout equipment adopts suction-type power detection mode to measure the power of the radiofrequency signal that RRU launches, and when the performance number measured reaches predetermined power, described checkout equipment sends notice to described RRU;
Described RRU receives described notice, and the described I/Q data being handed down to described RRU by baseband pool unit BBU calculate described base band power;
Described RRU, using the output power of described predetermined power as described transmission channel, using the input power of described base band power as described transmission channel, calculates the power gain value of described transmission channel.
3. method according to claim 2, is characterized in that, the power that described checkout equipment adopts suction-type power detection mode to measure the radiofrequency signal that RRU exports comprises:
Described RRU receives the base band data corresponding with described predetermined power, adjusts the gain of described transmission channel, until receive the described notice of described checkout equipment with minimum step value;
Described checkout equipment judges whether the performance number measured reaches described predetermined power, if so, sends described notice to described RRU.
4. method according to claim 1, it is characterized in that, the power of the radiofrequency signal exported by the RRU adopting the measurement of suction-type power detection mode to obtain and the base band power obtained according to the current received orthogonal in the same way I/Q data of RRU, the power gain value obtaining transmission channel comprises:
Checkout equipment adopts suction-type power detection mode to measure the power of the radiofrequency signal that RRU exports;
Described checkout equipment receives the I/Q data that described RRU transmits, and wherein, described I/Q data are the I/Q data that described RRU is currently received;
Described checkout equipment calculates described base band power according to described I/Q data;
The power that measurement obtains by described checkout equipment, as the output power of described transmission channel, using the input power of described base band power as described transmission channel, calculates the power gain value of described transmission channel.
5. the method according to any one of claim 2 to 4, is characterized in that, described checkout equipment measures the power of the radiofrequency signal that described RRU launches by microwave detector.
6. the method according to any one of claim 2 to 4, is characterized in that, described checkout equipment adopts the mode of analog-to-digital conversion ADC sampling to measure the power of the radiofrequency signal that described RRU launches; Before the power measuring the radiofrequency signal that described RRU launches, described method also comprises: it is synchronous with described RRU that described checkout equipment adjusts its clock.
7. the method according to any one of claim 2 to 4, is characterized in that, described RRU carries out communication by external interface and described checkout equipment, and wherein, described external interface comprises: network interface or serial ports.
8. a checkout equipment, is characterized in that, comprising:
Power meter module, the power of the radiofrequency signal that the RRU obtained for adopting the measurement of suction-type power detection mode launches;
Judge module, for judging whether the power that described power meter module measures reaches predetermined power, if so, then triggers communication module;
Described communication module, is connected with described RRU by interface, for sending notice to described RRU, notifies that the power that described power meter module measures has reached described predetermined power;
Wherein, described notice is provided for the I/Q data that described RRU is handed down to described RRU by baseband pool unit BBU and calculates base band power, using the output power of described predetermined power as transmission channel, using the input power of described base band power as described transmission channel, calculate the power gain value of described transmission channel.
9. a correcting device for RRU Power control model, is characterized in that, comprising:
Computing module, the power of the radiofrequency signal of launching for the RRU by adopting the measurement of suction-type power detection mode to obtain and the base band power obtained according to the current received orthogonal in the same way I/Q data of RRU, obtain the power gain value of transmission channel;
First correcting module, for using the transmission channel gain of described power gain value modified R RU Power control model;
Second modified module, for according to revised described transmission channel gain, revises sense channel gain and the receive path gain of described RRU Power control model;
Wherein, described second modified module is also for revising sense channel gain and the receive path gain of described RRU Power control model by following steps: transmission channel described in loopback and described sense channel, detect the power of the radiofrequency signal that described sense channel receives, obtain sense channel power; According to I/Q data and the described transmission channel gain of current reception, obtain the input power of described sense channel; Using the output power of described sense channel power as described sense channel and described receive path, obtain the power gain value of described sense channel and described receive path according to the input power of described sense channel and the output power of described sense channel and described receive path; The sense channel gain of RRU Power control model described in the power gain value correction using described sense channel and described receive path and receive path gain.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010273914.7A CN102387522B (en) | 2010-08-31 | 2010-08-31 | The modification method of Remote Radio Unit Power control model and device, checkout equipment |
| PCT/CN2011/074441 WO2012028001A1 (en) | 2010-08-31 | 2011-05-20 | Modification method, device and detection equipment for power control model of radio remote unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010273914.7A CN102387522B (en) | 2010-08-31 | 2010-08-31 | The modification method of Remote Radio Unit Power control model and device, checkout equipment |
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| Publication Number | Publication Date |
|---|---|
| CN102387522A CN102387522A (en) | 2012-03-21 |
| CN102387522B true CN102387522B (en) | 2015-11-25 |
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| CN1627656A (en) * | 2003-12-08 | 2005-06-15 | 华为技术有限公司 | Equipment and method for stabilizing output power in base station |
| CN201160312Y (en) * | 2007-11-23 | 2008-12-03 | 深圳国人通信有限公司 | RRU testing system of base band dragged away subsystem and BBU simulating apparatus |
| CN101562478A (en) * | 2009-05-25 | 2009-10-21 | 芯通科技（成都）有限公司 | Method for adaptively adjusting CFR threshold and radio frequency zooming system |
| JP2010148020A (en) * | 2008-12-22 | 2010-07-01 | Fujitsu Ltd | Wireless transmitter, and carrier leak control method |
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| CN101183900B (en) * | 2007-11-23 | 2011-08-31 | 深圳国人通信有限公司 | Baseband extension radio frequency subsystem RRU testing method, system and analog BBU device |
| CN101777947B (en) * | 2010-01-19 | 2014-01-01 | 中兴通讯股份有限公司 | IQ channel distribution method and device on baseband unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1627656A (en) * | 2003-12-08 | 2005-06-15 | 华为技术有限公司 | Equipment and method for stabilizing output power in base station |
| CN201160312Y (en) * | 2007-11-23 | 2008-12-03 | 深圳国人通信有限公司 | RRU testing system of base band dragged away subsystem and BBU simulating apparatus |
| JP2010148020A (en) * | 2008-12-22 | 2010-07-01 | Fujitsu Ltd | Wireless transmitter, and carrier leak control method |
| CN101562478A (en) * | 2009-05-25 | 2009-10-21 | 芯通科技（成都）有限公司 | Method for adaptively adjusting CFR threshold and radio frequency zooming system |
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| WO2012028001A1 (en) | 2012-03-08 |
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